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Sample records for photography dental

  1. Teaching Photography in Dental Schools.

    ERIC Educational Resources Information Center

    Chuman, Ted A.; Hummel, Susan K.

    1992-01-01

    Two surveys investigated the extent of photography instruction in dental schools. The first survey of 53 schools revealed that 36% had formal dental photography programs. Of 21 photography instructors surveyed in the second study, 67% had no formal training, many knew little about texts or resources, and techniques and knowledge varied. (MSE)

  2. Technological updates in dental photography.

    PubMed

    Shagam, Josh; Kleiman, Alan

    2011-07-01

    Digital photography is a constantly evolving medium that can be used in dentistry for a number of applications including documentation and patient education. In the past 5 years, it has become standard professional practice for photographers to shoot in raw format, organize and edit in Adobe Photoshop Lightroom, and archive files using portable hard drives and off-site storage. Concurrently, cameras have increased resolution, improved antidust technology, and added versatile flash accessories for macro imaging. Adopting professional photographic practices and taking advantage of technological developments in a dental practice can be an invaluable tool in education and documentation. PMID:21726696

  3. Digital dental photography. Part 5: lighting.

    PubMed

    Ahmad, I

    2009-07-11

    Effective lighting is the key to success in all photography but particularly in dental photography. This part of the series on digital dental photography examines the colour/space/time triad which is achieved by the presence and manipulation of light, be it daylight, flashlight or other forms of illumination. In addition, the effect of reflectors is described as well as their effects on colour temperature. PMID:19590549

  4. Digital Dental Photography: A Contemporary Revolution

    PubMed Central

    Bumb, Dipika

    2013-01-01

    ABSTRACT Introduction: Photographs are symbolic of memories and with the advent of digital photography it has become much easier to collect them in a second in a more comprehensive and qualitative manner. Technological advancements in the field of digital photography have revolutionized the concept of photography as a powerful medium of expression and communication. It also offers a spectrum of perception, interpretation and execution. Photography and dentistry go hand in hand for revelation of the hidden and overlooked defects in teeth and other parts of the cavity. This article emphasizes on the significance of digital photography in dentistry and guidelines for capturing orofacial structures and radiographs in a more accurate and informative manner. Conclusion: Dental world constitutes of microstructures that have to be recorded in a detailed manner in order to perform patient education, documentation of records and treatment, illustration of lectures, publication and web connectivity of complicated cases. How to cite this article: Desai V, Bumb D. Digital Dental Photography: A Contemporary Revolution. Int J Clin Pediatr Dent 2013;6(3):193-196. PMID:25206221

  5. Digital dental photography. Part 10: printing, publishing and presentations.

    PubMed

    Ahmad, I

    2009-09-26

    The final part of this series on digital dental photography details how to use images to their maximum potential. The purpose and uses of dental photography have previously been covered in Part 2, and the ensuing discussion concentrates on the technical aspects of printing, publishing and audio-visual presentations. PMID:19779515

  6. Digital dental photography. Part 2: Purposes and uses.

    PubMed

    Ahmad, I

    2009-05-01

    Although the primary purpose of using digital photography in dentistry is for recording various aspects of clinical information in the oral cavity, other benefits also accrue. Detailed here are the uses of digital images for dento-legal documentation, education, communication with patients, dental team members and colleagues and for portfolios, and marketing. These uses enhance the status of a dental practice and improve delivery of care to patients. PMID:19424242

  7. Considerations for use of dental photography and electronic media in dental education and clinical practice.

    PubMed

    Stieber, Jane C; Nelson, Travis; Huebner, Colleen E

    2015-04-01

    Photography and electronic media are indispensable tools for dental education and clinical practice. Although previous research has focused on privacy issues and general strategies to protect patient privacy when sharing clinical photographs for educational purposes, there are no published recommendations for developing a functional, privacy-compliant institutional framework for the capture, storage, transfer, and use of clinical photographs and other electronic media. The aims of this study were to research patient rights relating to electronic media and propose a framework for the use of patient media in education and clinical care. After a review of the relevant literature and consultation with the University of Washington's director of privacy and compliance and assistant attorney general, the researchers developed a privacy-compliant framework to ensure appropriate capture, storage, transfer, and use of clinical photography and electronic media. A four-part framework was created to guide the use of patient media that reflects considerations of patient autonomy and privacy, informed consent, capture and storage of media, and its transfer, use, and display. The best practices proposed for capture, storage, transfer, and use of clinical photographs and electronic media adhere to the health care code of ethics (based on patient autonomy, nonmaleficence, beneficence, justice, and veracity), which is most effectively upheld by a practical framework designed to protect patients and limit institutional liability. Educators have the opportunity and duty to convey these principles to students who will become the next generation of dentists, researchers, and educators. PMID:25838015

  8. Digital dental photography. Part 4: choosing a camera.

    PubMed

    Ahmad, I

    2009-06-13

    With so many cameras and systems on the market, making a choice of the right one for your practice needs is a daunting task. As described in Part 1 of this series, a digital single reflex (DSLR) camera is an ideal choice for dental use in enabling the taking of portraits, close-up or macro images of the dentition and study casts. However, for the sake of completion, some other cameras systems that are used in dentistry are also discussed. PMID:19521372

  9. Dynamics of water-mediated hard dental tissue ablation with Ho:YAG laser visualized by high speed photography

    NASA Astrophysics Data System (ADS)

    Zhan, Zhenlin; Chen, Chuanguo; Li, Xuwei; Zhang, Xianzeng; Xie, Shusen

    2015-03-01

    The goal of this study was to evaluate the dynamic process of water-mediated hard dental tissue ablation induced by Ho:YAG laser with high-speed camera. Human molars in vitro of yellow race were cut into tooth sections and irradiated with pulsed Ho:YAG laser with a wavelength of 2.08μm. The pulse repetition rate was 3 Hz and laser energy ranged from 300 to 2000 mJ. The frame rate of high-speed camera used in the experiment was 50525 fps. Based on the observation by high-speed camera, the dynamic process of the oscillating cavitation bubble and water-mediated ablation induced by Ho:YAG laser was efficiently recorded and graphically described. The pulsation period, the maximum length and width of vapor channel increased with laser energy. The results showed that the external water played multiple roles in laser ablation of hard dental tissue, not only acting as a channel to transmit laser energy, but also helping to improve the regularity of the ablation shape.

  10. Electronic Photography

    NASA Technical Reports Server (NTRS)

    Payne, Meredith Lindsay

    1995-01-01

    The main objective was to assist in the production of electronic images in the Electronic Photography Lab (EPL). The EPL is a new facility serving the electronic photographic needs of the Langley community. The purpose of the Electronic Photography lab is to provide Langley with access to digital imaging technology. Although the EPL has been in operation for less than one year, almost 1,000 images have been produced. The decision to establish the lab was made after careful determination of the centers needs for electronic photography. The LaRC community requires electronic photography for the production of electronic printing, Web sites, desktop publications, and its increased enhancement capabilities. In addition to general use, other considerations went into the planning of the EPL. For example, electronic photography is much less of a burden on the environment compared to conventional photography. Also, the possibilities of an on-line database and retrieval system could make locating past work more efficient. Finally, information in an electronic image is quantified, making measurements and calculations easier for the researcher.

  11. Photography applications

    USGS Publications Warehouse

    Cochran, Susan A.

    2013-01-01

    Photographic imaging is the oldest form of remote sensing used in coral reef studies. This chapter briefly explores the history of photography from the 1850s to the present, and delves into its application for coral reef research. The investigation focuses on both photographs collected from low-altitude fixed-wing and rotary aircraft, and those collected from space by astronauts. Different types of classification and analysis techniques are discussed, and several case studies are presented as examples of the broad use of photographs as a tool in coral reef research.

  12. Sociology through Photography

    ERIC Educational Resources Information Center

    Hyde, Katherine

    2015-01-01

    This chapter describes how photography can inspire and cultivate sociological mindfulness. One set of assignments uses self-portraiture to highlight the complexity of visual representations of social identity. Another uses photography to guide sociological inquiry. Both sets of assignments draw on the Literacy Through Photography methodology,…

  13. The future of photography

    NASA Astrophysics Data System (ADS)

    Motta, Ricardo J.

    2010-01-01

    We are just a few years away from celebrating the 200th anniversary of photography. The first permanent photographic record was made by Niepce in 1826, the view from his window at Le Gras. After many development cycles, including some periods of stagnation, photography is now experience an amazing period of growth. Change since the mid 90's going into the next several years will completely modify photography and its industry. We propose that the digital photography revolution can be divided into two phases. The first, from about 1994 to 2009, was primarily the transformation of film-based equipment into their digital counterparts. Now, in the second phase, photography is starting to change into something completely different, with forces like social networks, cell phone cameras and computational photography changing the business, the methods and the use of photographs.

  14. Scholastic Photography Awards.

    ERIC Educational Resources Information Center

    Art Education, 1981

    1981-01-01

    Presents 13 winning photographs by secondary students participating in the annual Scholastic Photography Awards competition conducted by Scholastic Magazines, Inc., and sponsored by the Eastman Kodak Company. Top winners receive scholarships. (SJL)

  15. State Skill Standards: Photography

    ERIC Educational Resources Information Center

    Howell, Frederick; Reed, Loretta; Jensen, Capra; Robison, Gary; Taylor, Susan; Pavesich, Christine

    2007-01-01

    The Department of Education has undertaken an ambitious effort to develop statewide skill standards for all content areas in career and technical education. The standards in this document are for photography programs and are designed to clearly state what the student should know and be able to do upon completion of an advanced high-school program.…

  16. Photography as Therapy.

    ERIC Educational Resources Information Center

    Routh, Robert D.

    Image making, like writing and speaking, is a carrier of ideas. This paper presents photography as therapy, a useful concept for advocates of humanistic education. The paper shows that Western civilization, due to its preoccupation with science, technology, and commerce, enhances and promotes left-hemispheric brain functions (verbal, analytical,…

  17. Dreams Memories & Photography

    ERIC Educational Resources Information Center

    Young, Bernard

    2012-01-01

    Photography students spend a considerable amount of time working on technical issues in shooting, composing, editing, and processing prints. Another aspect of their learning should include the conception and communication of their ideas. A student's memories and dreams can serve as motivation to create images in visual art. Some artists claim that…

  18. Photography in Pink Classrooms

    ERIC Educational Resources Information Center

    Ashburn, Liz

    2007-01-01

    The teaching of photography provides many opportunities to attack the assumption of universal heterosexuality, which is central to our society, in order to provide space for other sexualities such as gay, lesbian, bisexual and transgender. This article is based on many years of lecturing in art schools and focuses on the classroom teaching of…

  19. Exploring Racism through Photography

    ERIC Educational Resources Information Center

    Fey, Cass; Shin, Ryan; Cinquemani, Shana; Marino, Catherine

    2010-01-01

    Photography is a powerful medium with which to explore social issues and concerns through the intersection of artistic form and concept. Through the discussions of images and suggested activities, students will understand various ways photographers have documented and addressed racism and discrimination. This Instructional Resource presents a…

  20. The use of full spectrum digital photography for evidence collection and preservation in cases involving forensic odontology.

    PubMed

    Wright, Franklin D; Golden, Gregory S

    2010-09-10

    Photography often represents the best method to collect and preserve evidence in forensic cases. This is especially true in forensic odontology with cases involving dental identification, human abuse and, perhaps most significantly, bitemark cases. Basic visible light photography is adequate in most dental identification cases; however, full spectrum digital photography is best utilized to collect all available evidence in cases of human abuse and bitemarks. This paper will discuss the types of photographic evidence that should be collected with various forensic odontological cases and the specific techniques utilized in full spectrum forensic digital photography. The use of full spectrum photography captures the forensic injuries using special techniques recording the injuries in each of the four resultant events that occur when light strikes skin. PMID:20447784

  1. Dental Amalgam

    MedlinePlus

    ... Products and Medical Procedures Dental Devices Dental Amalgam Dental Amalgam Share Tweet Linkedin Pin it More sharing options Linkedin Pin it Email Print Dental amalgam is a dental filling material which is ...

  2. Basic digital photography in dermatology.

    PubMed

    Kaliyadan, Feroze; Manoj, Jayasree; Venkitakrishnan, S; Dharmaratnam, A D

    2008-01-01

    Digital photography has virtually replaced conventional film photography as far as clinical imaging is concerned. Though most dermatologists are familiar with digital cameras, there is room for improvement in the quality of clinical images. We aim to give an overview of the basics of digital photography in relation to dermatology, which would be useful to a dermatologist in his or her future clinical practice. PMID:19052435

  3. The photography of fluorescein

    SciTech Connect

    Welch, J.D.

    1982-06-01

    The last few years have seen a number of new flaps described and a renewed interest in the use of fluorescein, but there have been few photographs of the fluorescein effect, because special light sources were required with the filters that were employed. The realization that fluorescein can be excited by electromagnetic radiation in the visible range allows a simplified technique in which an ordinary electronic flash unit may serve as the only light source. The photography of fluorescein is not difficult to perform, and since minimal additional equipment is required, all workers who use fluorescein should begin to document their work more accurately and dramatically.

  4. Photography with a Microscope

    NASA Astrophysics Data System (ADS)

    Rost, Fred; Oldfield, Ron

    2000-03-01

    This beautifully illustrated book describes the methods used to record images viewed through a microscope. The text describes the principles and practices of photomicrography, and is written for all who take photomicrographs, beginners and/or experienced practitioners. The authors describe techniques that may be applied to many disciplines for teaching, research, archives, or pleasure. The book includes chapters on standard photography, modern digital techniques, methods for improving contrast, and a short chapter on drawing. In addition to its value as a work of reference, the authors' clear, didactic style makes this book suitable as a textbook for courses in photomicrography and/or elementary light microscopy.

  5. Broadband ringdown spectral photography.

    PubMed

    Scherer, J J; Paul, J B; Jiao, H; O'Keefe, A

    2001-12-20

    A new technique that enables frequency-resolved cavity ringdown absorption spectra to be obtained over a large optical bandwidth by a single laser shot is described. The technique, ringdown spectral photography (RSP), simultaneously employs two key principles to record the time and frequency response of an optical cavity along orthogonal axes of a CCD array detector. Previously, the principles employed in RSP were demonstrated with narrow-band laser light that was scanned in frequency [Chem. Phys. Lett. 292, 143 (1998)]. Here, the RSP method is demonstrated using single pulses of broadband visible laser light. The ability to obtain broad as well as rotationally resolved spectra over a large bandwidth with high sensitivity is demonstrated. PMID:18364983

  6. Health hazards of photography.

    PubMed

    Rosenthal, J; Forst, L

    2001-01-01

    Photographers are exposed to chemical, physical, and psychological hazards during the course of their work. Photojournalists are at physical risk from motor vehicle crashes and work in war zones. Ergonomic risk comes from handling heavy equipment as well as work in awkward postures in dangerous positions. Darkroom exposure to chemical agents may lead to respiratory, allergic, and nervous system disease. Psychological problems come from chaotic work organization. Digital photography may reduce the prevalence of chemical exposure, although it may increase the risk of musculoskeletal illness. Simple hygiene measures may prevent illness in photographers. An increasing number of printed resources is available to professional and amateur photographers; this information may help them protect their health while they enjoy their art. PMID:11567918

  7. Depth-based computational photography

    NASA Astrophysics Data System (ADS)

    Liu, Ziwei; Xu, Tingfa; Liu, Jingdan; Li, Xiangmin; Zhao, Peng

    2015-05-01

    A depth-based computational photography model is proposed for all-in-focus image capture. A decomposition function, a defocus matrix, and a depth matrix are introduced to construct the photography model. The original image acquired from a camera can be decomposed into several sub-images on the basis of depth information. The defocus matrix can be deduced from the depth matrix according to the sensor defocus geometry for a thin lens model. And the depth matrix is reconstructed using the axial binocular stereo vision algorithm. This photography model adopts an energy functional minimization method to acquire the sharpest image pieces separately. The implementation of the photography method is described in detail. Experimental results for an actual scene demonstrate that our model is effective.

  8. Dental Sealants

    MedlinePlus

    ... Data & Statistics > Find Data by Topic > Dental Sealants Dental Sealants Main Content Dental sealants are thin plastic coatings that protect the chewing surfaces of children’s back teeth from tooth decay. Overall, the prevalence of sealants ...

  9. Using Digital Photography to Enhance Student Creativity

    ERIC Educational Resources Information Center

    Siegle, Del

    2012-01-01

    The purpose of this article is to help students develop their digital photography skills and see the world through new eyes. An emphasis is placed on using digital photography to communicate ideas and feelings. (Contains 6 figures and 2 tables.)

  10. Professionalism and Awards in Television News Photography.

    ERIC Educational Resources Information Center

    Smith, Conrad; Hubbard, Tom

    1987-01-01

    Tests the hypothesis that photojournalists with high professionalism scores are more likely to win news photography awards. Suggests that television news photography awards recognize skills gained through experience rather than specific professional values. (MM)

  11. Dental Procedures.

    PubMed

    Ramponi, Denise R

    2016-01-01

    Dental problems are a common complaint in emergency departments in the United States. There are a wide variety of dental issues addressed in emergency department visits such as dental caries, loose teeth, dental trauma, gingival infections, and dry socket syndrome. Review of the most common dental blocks and dental procedures will allow the practitioner the opportunity to make the patient more comfortable and reduce the amount of analgesia the patient will need upon discharge. Familiarity with the dental equipment, tooth, and mouth anatomy will help prepare the practitioner for to perform these dental procedures. PMID:27482994

  12. Aerial Photography Summary Record System

    USGS Publications Warehouse

    U.S. Geological Survey

    1998-01-01

    The Aerial Photography Summary Record System (APSRS) describes aerial photography projects that meet specified criteria over a given geographic area of the United States and its territories. Aerial photographs are an important tool in cartography and a number of other professions. Land use planners, real estate developers, lawyers, environmental specialists, and many other professionals rely on detailed and timely aerial photographs. Until 1975, there was no systematic approach to locate an aerial photograph, or series of photographs, quickly and easily. In that year, the U.S. Geological Survey (USGS) inaugurated the APSRS, which has become a standard reference for users of aerial photographs.

  13. Data users note: Apollo 17 lunar photography

    NASA Technical Reports Server (NTRS)

    Cameron, W. S.; Doyle, F. J.; Levenson, L.; Michlovitz, K.

    1974-01-01

    The availability of Apollo 17 pictorial data is announced as an aid to the selection of the photographs for study. Brief descriptions are presented of the Apollo 17 flight, and the photographic equipment used during the flight. The following descriptions are also included: service module photography, command module photography, and lunar surface photography.

  14. Multispectral photography for earth resources

    NASA Technical Reports Server (NTRS)

    Wenderoth, S.; Yost, E.; Kalia, R.; Anderson, R.

    1972-01-01

    A guide for producing accurate multispectral results for earth resource applications is presented along with theoretical and analytical concepts of color and multispectral photography. Topics discussed include: capabilities and limitations of color and color infrared films; image color measurements; methods of relating ground phenomena to film density and color measurement; sensitometry; considerations in the selection of multispectral cameras and components; and mission planning.

  15. Keynote Address: Photography From Space

    NASA Astrophysics Data System (ADS)

    Underwood, Richard W.

    1984-11-01

    Since the beginning of history, mankind has dreamed of soaring above his planet and recording his impressions. Others dreamed of a journey to the Moon, to the other planets, and indeed to the stars. NASA cameras have changed the dreams to stark reality. Space photography is not only striking in beauty, but also permits us to unlock many of the secrets of our universe.

  16. Surprising Beauty in Technical Photography

    ERIC Educational Resources Information Center

    Davidhazy, Andrew

    2009-01-01

    The Imaging and Photographic Technology area, in which the author teaches, is an applications- and technology-oriented photography program designed to prepare students for work in technical, corporate, industrial, and scientific environments. One day, the author received an e-mail message from an editor who had found his Web site and thought he…

  17. Teaching Field Biology with Photography

    ERIC Educational Resources Information Center

    Jenkins, Ronald L.; Howell, W. Mike; Davenport, L. J.; Wood, Linda F.

    2003-01-01

    Photography makes an easy and excellent tool for teaching field biology courses, allowing students to study nature without harming it. This photographic technique is used in capturing images of vertebrates, invertebrates, and plants during class field trips, then making these images available for students to identify and study from a departmental…

  18. Teaching Photography without a Darkroom.

    ERIC Educational Resources Information Center

    McDole, Thomas L.

    Alternative curriculum strategies can be used to conduct an effective photography program without the expense usually associated with a darkroom. Three methods can be used to eliminate the need for a darkroom facility: outside vendors, an emulsion that can be user-processed without access to a darkroom (slide or transparency film), and emulsions…

  19. Astronomical Photography for the Classroom.

    ERIC Educational Resources Information Center

    Hulme, Kenneth S.

    1981-01-01

    Describes class projects involving astronomical photography. Includes a description of how to make an astrocamera or convert a pocket camera into one suitable for astrophotography, film choices, and phenomena to photograph, such as star trails, meteors, the sun, and the moon. (DS)

  20. Photography-based image generator

    NASA Astrophysics Data System (ADS)

    Dalton, Nicholas M.; Deering, Charles S.

    1989-09-01

    A two-channel Photography Based Image Generator system was developed to drive the Helmet Mounted Laser Projector at the Naval Training System Center at Orlando, Florida. This projector is a two-channel system that displays a wide field-of-view color image with a high-resolution inset to efficiently match the pilot's visual capability. The image generator is a derivative of the LTV-developed visual system installed in the A-7E Weapon System Trainer at NAS Cecil Field. The Photography Based Image Generator is based on patented LTV technology for high resolution, multi-channel, real world visual simulation. Special provisions were developed for driving the NTSC-developed and patented Helmet Mounted Laser Projector. These include a special 1023-line raster format, an electronic image blending technique, spherical lens mapping for dome projection, a special computer interface for head/eye tracking and flight parameters, special software, and a number of data bases. Good gaze angle tracking is critical to the use of the NTSC projector in a flight simulation environment. The Photography Based Image Generator provides superior dynamic response by performing a relatively simple perspective transformation on stored, high-detail photography instead of generating this detail by "brute force" computer image generation methods. With this approach, high detail can be displayed and updated at the television field rate (60 Hz).

  1. Guidebook to School Publications Photography.

    ERIC Educational Resources Information Center

    Glowacki, Joseph W.

    This guidebook for school publications photographers discusses both the self-image of the publications photographer and various aspects of photography, including components of the camera, shutter speed and action pictures, light meters, handling cameras, lenses, developing film, pushing film beyond the emulsion-speed rating recommended by the…

  2. The Chemistry of Color Photography

    ERIC Educational Resources Information Center

    Guida, Wayne C.; Raber, Douglas J.

    1975-01-01

    Presents several topics in color photography which can serve as an introduction of scientific concepts into the classroom, such as: photochemistry (energy transport), organic chemistry (dye formation), physics (nature of light), psychology (color perception), and engineering (isolation of different chemical processes within layers of the film).…

  3. Medical photography: principles for orthopedics

    PubMed Central

    2014-01-01

    Background Medical photography is used clinically for patient evaluation, treatment decisions, and scientific documentation. Although standards for medical photography exist in many branches of medicine, we have not encountered such criteria in publications in the area of orthopedics. Purpose This study aims to (1) assess the quality of medical images used in an orthopedic publication and (2) to propose standards for medical photography in this area. Methods Clinical photographs were reviewed from all issues of a journal published between the years 2008 and 2012. A quality of clinical images was developed based on the criteria published for the specialties of dermatology and cosmetic surgery. All images were reviewed on the appropriateness of background, patient preparation, and technique. Results In this study, only 44.9% of clinical images in an orthopedic publication adhered to the proposed conventions. Conclusions Standards have not been established for medical photography in orthopedics as in other specialty areas. Our results suggest that photographic clinical information in orthopedic publications may be limited by inadequate presentation. We propose that formal conventions for clinical images should be established. PMID:24708703

  4. Digital Photography for Elementary Students

    ERIC Educational Resources Information Center

    Neckers, Matt

    2009-01-01

    Most elementary students approach photography in an open-minded, experimental way. As a result, their images are often more playful than those taken by adults. Students discover more through their own explorations than they would learn through overly structured lessons. In this article, the author describes how he introduces his elementary…

  5. Commercial Photography: Scope and Sequence.

    ERIC Educational Resources Information Center

    Nashville - Davidson County Metropolitan Public Schools, TN.

    This scope and sequence guide, developed for a commercial photography vocational education program, represents an initial step in the development of a systemwide articulated curriculum sequence for all vocational programs within the Metropolitan Nashville Public School System. It was developed as a result of needs expressed by teachers, parents,…

  6. Modernizing medical photography, part 1.

    PubMed

    Crompton, Paul

    2004-12-01

    Government, media and public focus on waiting times in the National Health Service in the United Kingdom has forced the organization to look closely at the process by which a patient progresses through an increasingly complex and ever changing system. In an effort to streamline the patient journey or care pathway, modernizers have turned to business and manufacturing for solutions. Whilst medical photographers need to recognize their role in this context, they are also facing major technological modernization through the development of digital photography. Part 1 of this paper looks at the origins of some of the techniques presently being used to modernize the patient journey. Part 2 shows how these tools of modernization can be utilized to harness the advantages of digital technology to provide a modern and appropriate medical photography service in a large, disparate teaching hospital. PMID:15805027

  7. Speckle photography in biomechanical testing

    NASA Astrophysics Data System (ADS)

    Kasprzak, Henryk T.; Podbielska, Halina

    1994-02-01

    The application of speckle photography in biomechanical testing of bones and surgical fixing devices is presented. Double-exposure speckle photography is used for measuring the in-plane deformation of broken lower leg bones supported with different fixing devices under axial loading. An osteosynthesis plate, an external fixator, and an intramedullar nail mounted on the tibia shaft are tested. The results for different loading conditions are analyzed and compared with those obtained by holographic interferometry. Further, the human hyoid bone is investigated by this method. The load is applied to the anterior surface of the body of the bone. All tested specimen show an asymmetric displacement, the greatest in a plane vertical to the load. An evaluation of fracture behavior can be done from the displacement pattern.

  8. Imagers for digital still photography

    NASA Astrophysics Data System (ADS)

    Bosiers, Jan; Dillen, Bart; Draijer, Cees; Manoury, Erik-Jan; Meessen, Louis; Peters, Inge

    2006-04-01

    This paper gives an overview of the requirements for, and current state-of-the-art of, CCD and CMOS imagers for use in digital still photography. Four market segments will be reviewed: mobile imaging, consumer "point-and-shoot cameras", consumer digital SLR cameras and high-end professional camera systems. The paper will also present some challenges and innovations with respect to packaging, testing, and system integration.

  9. Audit Log for Forensic Photography

    NASA Astrophysics Data System (ADS)

    Neville, Timothy; Sorell, Matthew

    We propose an architecture for an audit log system for forensic photography, which ensures that the chain of evidence of a photograph taken by a photographer at a crime scene is maintained from the point of image capture to its end application at trial. The requirements for such a system are specified and the results of experiments are presented which demonstrate the feasibility of the proposed approach.

  10. Digital photography in orthopaedic surgery.

    PubMed

    Elbeshbeshy, B; Trepman, E

    2001-01-01

    Digital photography has become a practical alternative to film photography for documentation, communication, and education about orthopaedic problems and treatment. Digital cameras may be used to document preoperative and postoperative condition, intraoperative findings, and imaging studies. Digital photographs are captured on the charged coupler device (CCD) of the camera, and processed as digital data. Images may be immediately viewed on the liquid crystal display (LCD) screen of the camera and reshot if necessary. Photographic image files may be stored in the camera in a floppy diskette, CompactFlash card, or SmartMedia card, and transferred to a computer. The images may be manipulated using photo-editing software programs, stored on media such as Zip disks or CD-R discs, printed, and incorporated into digital presentations. The digital photographs may be transmitted to others using electronic mail (e-mail) and Internet web sites. Transparency film slides may be converted to digital format and used in digital presentations. Despite the initial expense to obtain the required hardware, major cost savings in film and processing charges may be realized over time compared with film photography. PMID:11206828

  11. Flash photography-induced maculopathy

    PubMed Central

    Veugelen, Tim; Coutteel, Carine; Leys, Anita

    2011-01-01

    Objective: To report a flash photography-induced maculopathy. Methods: A professional photographer blinded himself accidentally and he consulted 3 days after the event with a scotoma in his dominant left eye. A unilateral acute light-induced maculopathy with hemorrhage was observed. The lesion was studied with colour photography, fluorescein and indocyanin angiography, autofluorescence imaging and repeated optical coherence tomography (OCT) imaging. Results: At age 43, this professional photographer was blinded by the flash light of his camera and subsequently realized he had a scotoma in his dominant eye. Three days after the event visual acuity (VA) was 20/70 and an acute light-induced maculopathy was noted. Another three days later, VA was 20/50 and the lesions were less prominent. After one month, the photographer still had problems making sharp pictures, VA was 20/25 and a macular scar was observed. During further follow-up, he regained full vision and experienced no professional problems. Conclusions: This case illustrates that the light of flash photography can accidentally hit an eye and induce a light-induced maculopathy.

  12. Ocular Fundus Photography as an Educational Tool.

    PubMed

    Mackay, Devin D; Garza, Philip S

    2015-10-01

    The proficiency of nonophthalmologists with direct ophthalmoscopy is poor, which has prompted a search for alternative technologies to examine the ocular fundus. Although ocular fundus photography has existed for decades, its use has been traditionally restricted to ophthalmology clinical care settings and textbooks. Recent research has shown a role for nonmydriatic fundus photography in nonophthalmic settings, encouraging more widespread adoption of fundus photography technology. Recent studies have also affirmed the role of fundus photography as an adjunct or alternative to direct ophthalmoscopy in undergraduate medical education. In this review, the authors examine the use of ocular fundus photography as an educational tool and suggest future applications for this important technology. Novel applications of fundus photography as an educational tool have the potential to resurrect the dying art of funduscopy. PMID:26444395

  13. Dental Hygienists

    MedlinePlus

    ... anatomy, patient management, and periodontics, which is the study of gum disease. High school students interested in becoming dental hygienists should take courses in biology, chemistry, and math. Most dental hygiene programs also require applicants to have completed at ...

  14. Dental sealants

    MedlinePlus

    ... this page: //medlineplus.gov/ency/patientinstructions/000779.htm Dental sealants To use the sharing features on this ... case a sealant needs to be replaced. How Dental Sealants Are Applied Your dentist applies sealants on ...

  15. The Dynamic Interplay between Photochemistry and Photography

    ERIC Educational Resources Information Center

    Forman, Samuel A.

    1975-01-01

    Examines the early photochemical and photographic research of French, German and English natural philosophers. Describes how these investigators developed photography and the laws which govern photochemical reactions. (MLH)

  16. Photography as an Agent of Transformation: Education, Community and Documentary Photography in Post-War Britain

    ERIC Educational Resources Information Center

    Macnab, Natasha

    2015-01-01

    Radical political activism in the 1970s and 1980s had a huge impact on documentary photography in Britain. Community organisations and photography collectives emerged and endeavoured to democratise the arts for those who would not otherwise have come into contact with them. Community photography used the technology to break down the barriers…

  17. Dental OCT

    NASA Astrophysics Data System (ADS)

    Colston, Bill W.; Sathyam, Ujwal S.; Dasilva, Luiz B.; Everett, Matthew J.; Stroeve, Pieter; Otis, L. L.

    1998-09-01

    We present here the first in vivo optical coherence tomography (OCT) images of human dental tissue. A novel dental optical coherence tomography system has been developed. This system incorporates the interferometer sample arm and transverse scanning optics into a handpiece that can be used intraorally to image human dental tissues. The average imaging depth of this system varied from 3 mm in hard tissues to 1.5 mm in soft tissues. We discuss the application of this imaging system for dentistry and illustrate the potential of our dental OCT system for diagnosis of periodontal disease, detection of caries, and evaluation of dental restorations.

  18. 36 CFR 5.5 - Commercial photography.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 1 2013-07-01 2013-07-01 false Commercial photography. 5.5 Section 5.5 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR COMMERCIAL AND PRIVATE OPERATIONS § 5.5 Commercial photography. (a) Motion pictures, television. Before...

  19. 36 CFR 5.5 - Commercial photography.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 1 2012-07-01 2012-07-01 false Commercial photography. 5.5 Section 5.5 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR COMMERCIAL AND PRIVATE OPERATIONS § 5.5 Commercial photography. (a) Motion pictures, television. Before...

  20. 36 CFR 5.5 - Commercial photography.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 1 2011-07-01 2011-07-01 false Commercial photography. 5.5 Section 5.5 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR COMMERCIAL AND PRIVATE OPERATIONS § 5.5 Commercial photography. (a) Motion pictures, television. Before...

  1. Data user's note: Apollo 15 lunar photography

    NASA Technical Reports Server (NTRS)

    Cameron, W. S.; Niksch, M. A. (Editor)

    1972-01-01

    Brief descriptions are given of the Apollo 15 mission objectives, photographic equipment, and photographic coverage and quality. The lunar photographic tasks were: (1) ultraviolet photography of the earth and moon; (2) photography of the gegenschein from lunar orbit; (3) service module orbital photographic tasks; and (4) command module photographic tasks.

  2. A Classroom Simulation of Aerial Photography.

    ERIC Educational Resources Information Center

    Baker, Simon

    1981-01-01

    Explains how a simulation of aerial photography can help students in a college level beginning course on interpretation of aerial photography understand the interrelationships of the airplane, the camera, and the earth's surface. Procedures, objectives, equipment, and scale are discussed. (DB)

  3. BOREAS Level-0 ER-2 Aerial Photography

    NASA Technical Reports Server (NTRS)

    Newcomer, Jeffrey A.; Dominquez, Roseanne; Hall, Forrest G. (Editor)

    2000-01-01

    For BOReal Ecosystem-Atmosphere Study (BOREAS), the ER-2 and other aerial photography was collected to provide finely detailed and spatially extensive documentation of the condition of the primary study sites. The ER-2 aerial photography consists of color-IR transparencies collected during flights in 1994 and 1996 over the study areas.

  4. Using Photography to Tell a Story

    ERIC Educational Resources Information Center

    Thompson, Susan; Williams, Kayenta

    2008-01-01

    Photography can be an exciting way to integrate art and creativity into social studies. Photography allows students to use creative self-expression in revealing the symbolism in historic places, people, or scenes with a richness that words alone often cannot accomplish. In this article, the authors provide several ideas for creating photo essays.…

  5. 36 CFR 1005.5 - Commercial photography.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Commercial photography. 1005.5 Section 1005.5 Parks, Forests, and Public Property PRESIDIO TRUST COMMERCIAL AND PRIVATE OPERATIONS § 1005.5 Commercial photography. (a) Motion pictures, television. Before any motion picture may be filmed or any television production or...

  6. Accommodation response for integral photography still images

    NASA Astrophysics Data System (ADS)

    Yano, Sumio; Park, Min-Chul

    2015-05-01

    In this paper the accommodation responses for integral photography still images were measured. The experimental results showed that the accommodation responses for integral photography images showed a linear change with images showing the depth position of integral photography, even if the integral photography images were located out of the depth of the field. Furthermore, the discrimination of depth perception, which relates to a blur effect in integral photography images, was subjectively evaluated for the examination of its influence on the accommodation response. As a result, the range of the discrimination of depth perception was narrow in comparison to the range of the rectilinear accommodation response. However, these results were consistent according to the propensity of statistical significance for the discrimination of depth perception in the out range of subjectively effective discriminations.

  7. Photography

    ERIC Educational Resources Information Center

    Cooke, Robert W.

    1976-01-01

    Another source for non-representational subject matter and new images is the world of light designs (photograms) which may be created directly on paper or film. Their creation was described, materials for their production suggested, and their impact on the world of art noted. (Author/RK)

  8. Affordable, Accessible, Immediate: Capture Stunning Images with Digital Infrared Photography

    ERIC Educational Resources Information Center

    Snyder, Mark

    2011-01-01

    Technology educators who teach digital photography should consider incorporating an infrared (IR) photography component into their program. This is an area where digital photography offers significant benefits. Either type of IR imaging is very interesting to explore, but traditional film-based IR photography is difficult and expensive. In…

  9. Evaluation of multiband photography for rock discrimination

    NASA Technical Reports Server (NTRS)

    Raines, G. L.

    1974-01-01

    An evaluation is presented of the multiband photography concept that tonal differences between rock formations on aerial photography can be improved through the selection of the appropriate bands. The concept involves: (1) acquiring band reference data for the rocks being considered; (2) selecting the best combination of bands to discriminate the rocks using these reference data; (3) acquiring aerial photography using these selected bands; and (4) extracting the desired geologic information in an optimum manner. The test site geology and rock reflectance are discussed in detail. The evaluation found that the differences in contrast ratios are not statistically significant, and the spectral information in different bands is not advantageous.

  10. [Digital photography as a scientific tool].

    PubMed

    Sainthillier, J-M; Mac-Mary, S; Humbert, Ph

    2009-10-01

    The remarkable development of digital photography has been possible thanks to joint advances in computer science and photography processing and retouching software. The scientific use of photography is now possible as long as its intrinsic limits are comprehended, particularly in the very specific time-limited structure of clinical trials. We list the two main limits inherent to this method: geometrical calibration and colorimetric calibration. These limitations are illustrated by numerous images used in our practice in Besançon during the last decade. PMID:19931685

  11. Astronomical photography. Part A: Gum nebula, galactic cluster, and zodiacal light photography

    NASA Technical Reports Server (NTRS)

    Mercer, R. D.; Dunkelman, L.; Mattingly, T. K.

    1972-01-01

    It is reported that the Apollo 16 command module astronomical photography was performed with the specific objective of capitalizing on the uniqueness of the double umbra as a vantage point to collect astronomical data that are obtainable only near our Moon. For this reason, these data will be compared directly to analogous photography performed from Earth orbit during Project Mercury and the Gemini Program as well as to the Apollo-duplicated photography taken from sites on the Earth surface. Comparison with Earth-based photography should yield direct information on the Earth airglow layer and on atmospheric scattering and extinction.

  12. Dental radiology.

    PubMed

    Woodward, Tony M

    2009-02-01

    Dental radiology is the core diagnostic modality of veterinary dentistry. Dental radiographs assist in detecting hidden painful pathology, estimating the severity of dental conditions, assessing treatment options, providing intraoperative guidance, and also serve to monitor success of prior treatments. Unfortunately, most professional veterinary training programs provide little or no training in veterinary dentistry in general or dental radiology in particular. Although a technical learning curve does exist, the techniques required for producing diagnostic films are not difficult to master. Regular use of dental x-rays will increase the amount of pathology detected, leading to healthier patients and happier clients who notice a difference in how their pet feels. This article covers equipment and materials needed to produce diagnostic intraoral dental films. A simplified guide for positioning will be presented, including a positioning "cheat sheet" to be placed next to the dental x-ray machine in the operatory. Additionally, digital dental radiograph systems will be described and trends for their future discussed. PMID:19410234

  13. Dental Hygienist.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. Center on Education and Training for Employment.

    This document, which is designed for use in developing a tech prep competency profile for the occupation of dental hygienist, lists technical competencies and competency builders for 13 units pertinent to the health technologies cluster in general and 9 units specific to the occupation of dental hygienist. The following skill areas are covered in…

  14. 36 CFR 5.5 - Commercial photography.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... COMMERCIAL AND PRIVATE OPERATIONS § 5.5 Commercial photography. (a) Motion pictures, television. Before any motion picture may be filmed or any television production or sound track may be made, which involves...

  15. Patient perception of wound photography.

    PubMed

    Wang, Sheila C; Anderson, John Ae; Jones, Duncan Vb; Evans, Robyn

    2016-06-01

    The objectives of this study were to provide an assessment of photographic documentation of the wound from the patients' perspective and to evaluate whether this could improve patients' understanding of and involvement in their wound care. Our results revealed that most patients visiting the wound care clinic have difficult-to-see wounds (86%). Only 20% of patients monitor their wounds and instead rely on clinic or nurse visits to track the healing progress. There was a significant association between patients' ability to see their wound and their subsequent memory of the wound's appearance. This was especially true for patients who had recently begun visiting the wound care clinic. This relationship was not present in patients who had visited the clinic for 3  or more years. Patients reported that the inability to see their wounds resulted in feeling a loss of autonomy. The majority of patients reported that photographing their wounds would help them to track the wound progress (81%) and would afford them more involvement in their own care (58%). This study provides a current representation of wound photography from the patients' perspective and reveals that it can motivate patients to become more involved in the management of their wounds - particularly for patients with difficult-to-see wounds. PMID:24872018

  16. Dental OCT

    NASA Astrophysics Data System (ADS)

    Wilder-Smith, Petra; Otis, Linda; Zhang, Jun; Chen, Zhongping

    This chapter describes the applications of OCT for imaging in vivo dental and oral tissue. The oral cavity is a diverse environment that includes oral mucosa, gingival tissues, teeth and their supporting structures. Because OCT can image both hard and soft tissues of the oral cavity at high resolution, it offers the unique capacity to identity dental disease before destructive changes have progressed. OCT images depict clinically important anatomical features such as the location of soft tissue attachments, morphological changes in gingival tissue, tooth decay, enamel thickness and decay, as well as the structural integrity of dental restorations. OCT imaging allows for earlier intervention than is possible with current diagnostic modalities.

  17. Access to Photography: Making Photography Accessible to Persons with Exceptional Educational Needs.

    ERIC Educational Resources Information Center

    Peterson, Charles R., Ed.

    This guide to making photography accessible to persons with exceptional educational needs contains several papers, a list of 27 organizational and bibliographic resources, a list of sources of adaptive equipment, and drawings of sample equipment modifications. Nine papers make up the text of the guide. In "An Adventure into Photography," Charles…

  18. Evolution of photography in maxillofacial surgery: from analog to 3D photography – an overview

    PubMed Central

    Schaaf, Heidrun; Malik, Christoph Yves; Howaldt, Hans-Peter; Streckbein, Philipp

    2009-01-01

    In maxillofacial surgery, digital photographic documentation plays a crucial role in clinical routine. This paper gives an overview of the evolution from analog to digital in photography and highlights the integration of digital photography into daily medical routine. The digital workflow is described and we show that image quality is improved by systematic use of photographic equipment and post-processing of digital photographs. One of the advantages of digital photography is the possibility of immediate reappraisal of the photographs for alignment, brightness, positioning, and other photographic settings, which aids in avoiding errors and allows the instant repetition of photographs if necessary. Options for avoiding common mistakes in clinical photography are also described and recommendations made for post-processing of pictures, data storage, and data management systems. The new field of 3D digital photography is described in the context of cranial measurements. PMID:23674904

  19. Dental Fluorosis

    MedlinePlus

    ... when children regularly consume fluoride during the teeth-forming years, age 8 and younger. Most dental fluorosis ... over a long period when the teeth are forming under the gums. Only children aged 8 years ...

  20. Dental Implants

    MedlinePlus Videos and Cool Tools

    ... facts so you can make an informed decision as to whether dental implants are right for your ... the jaw bone. It’s obviously not the same as the original connection , but functions just the same. ...

  1. Dental Caries (Tooth Decay)

    MedlinePlus

    ... Find Data by Topic > Dental Caries (Tooth Decay) Dental Caries (Tooth Decay) Main Content Dental caries (tooth decay) remains the most prevalent chronic ... important source of information on oral health and dental care in the United States since the early ...

  2. Flexible depth of field photography.

    PubMed

    Kuthirummal, Sujit; Nagahara, Hajime; Zhou, Changyin; Nayar, Shree K

    2011-01-01

    The range of scene depths that appear focused in an image is known as the depth of field (DOF). Conventional cameras are limited by a fundamental trade-off between depth of field and signal-to-noise ratio (SNR). For a dark scene, the aperture of the lens must be opened up to maintain SNR, which causes the DOF to reduce. Also, today's cameras have DOFs that correspond to a single slab that is perpendicular to the optical axis. In this paper, we present an imaging system that enables one to control the DOF in new and powerful ways. Our approach is to vary the position and/or orientation of the image detector during the integration time of a single photograph. Even when the detector motion is very small (tens of microns), a large range of scene depths (several meters) is captured, both in and out of focus. Our prototype camera uses a micro-actuator to translate the detector along the optical axis during image integration. Using this device, we demonstrate four applications of flexible DOF. First, we describe extended DOF where a large depth range is captured with a very wide aperture (low noise) but with nearly depth-independent defocus blur. Deconvolving a captured image with a single blur kernel gives an image with extended DOF and high SNR. Next, we show the capture of images with discontinuous DOFs. For instance, near and far objects can be imaged with sharpness, while objects in between are severely blurred. Third, we show that our camera can capture images with tilted DOFs (Scheimpflug imaging) without tilting the image detector. Finally, we demonstrate how our camera can be used to realize nonplanar DOFs. We believe flexible DOF imaging can open a new creative dimension in photography and lead to new capabilities in scientific imaging, vision, and graphics. PMID:21088319

  3. Aerial color infrared photography applications to citriculture

    NASA Technical Reports Server (NTRS)

    Blazquez, C. H.; Horn, F. W., Jr.

    1980-01-01

    Results of a one-year experimental study on the use of aerial color infrared photography in citrus grove management are presented. It is found that the spring season, when trees are in flush (have young leaves), is the best season to photograph visible differences between healthy and diseased trees. It is also shown that the best photography can be obtained with a 12-in. focal length lens. The photographic scale that allowed good photo interpretation with simple inexpensive equipment was 1 in. = 330 ft. The use of a window-overlay transparency method allowed rapid photo interpretation and data recording in computer-compatible forms. Aerial color infrared photography carried out during the spring season revealed a more accurate status of tree condition than visual inspection.

  4. Ground photography for improvved image interpretation training

    NASA Technical Reports Server (NTRS)

    Lougeay, R.

    1981-01-01

    Systematic sets of ground based color and color infrared photography were presented to students in remote sensing classes to enhance their ability to interpret satellite images. Features readily apparent on computer enhanced LANDSAT images were presented simultaneously with ground based photography in the format of slide triplicates. It was hypothesized that this instructional approach would improve the students' abilities to recognize, understand and interpret ground phenomena present on remotely sensed imagery. Tests conducted in undergraduate remote sensing classes substantially upheld this hypothesis. Student image interpretive abilities were tested before and after being exposed to the ground level photography. In general, image interpretive skills of the class improved by 25%. Also, the performance of students having different academic majors varied greatly for differing types of image subjects.

  5. Earth observations and photography experiment MA-136

    NASA Technical Reports Server (NTRS)

    El-Baz, F.; Mitchell, D. A.

    1976-01-01

    The primary objectives of the earth observations and photography experiment of the Apollo Soyuz Test Project were to photograph various terrestrial structures and to use the capabilities of man as a trained observer in visually studying earth features and phenomena. Man's special capabilities include the sensitivity of the eye to subtle color variations and the speed with which the eye/brain system can interpret what is seen and select targets for photography. Real time astronaut observations constitute a useful complement to orbital photographs and greatly aid in their interpretation. Targets for mapping and hand held photography were selected on the basis of their value to specialists in the earth sciences including geology, oceanography, desert study, hydrology, meteorology, and environmental science.

  6. A System For Automated Medical Photography

    NASA Astrophysics Data System (ADS)

    Tivattanasuk, Eva S.; Kaczoroski, Anthony J.; Rhodes, Michael L.

    1988-06-01

    A system is described that electronically controls the medical photography for a computed tomography (CT) scanner system. Multiple CT exams can be photographed with each image automatically adjusted to a specific gamma table presentation and positioned to any film location within a given film format. Our approach uses a library that can store 24 CT exam photography protocols. Library entries can be added, deleted, or edited. Mixed film formats, multiple image types, and automated annotation capabilities allow all CT exams to be filmed at our clinic cost-effectively and unattended. Using this automated approach to CT exam photography, one full-time equivalent CT technologist has been saved from the operational cost of our center. We outline the film protocol database, illustrate protocol options and by example, show the flexibility of this approach. Features of this system illustrate essential components of any such approach.

  7. Ethereal presences in holography and photography

    NASA Astrophysics Data System (ADS)

    Richardson, M.; Byrne, Kay

    2007-02-01

    This paper examines the concept of the 'Presence of Absence' in post-mortem photography and holography, drawing upon both historical and lesser-known images as reference. To create a photographic negative one needs the presence of light to expose the light sensitive surface, be it glass, a polished plate or plastic. A hologram may also be created when a coherent light source, for example from a Laser, travels through a light sensitive material and falls upon the subject to be recorded. A holograph however, retains the optical qualities of both phase and amplitude, the memory of light. Both mediums recall, as it were, 'now absent moments', and confronts us with what is 'not there' as much as 'what is'. This paper examines the exploration of absence and presence in post-mortem photography and holography and it's a richly visceral visual language. A photonic syntax can interpret death as an elegant yet horrific aesthetic, the photograph may be beautify screened and yet obscene in its content. In essence one can be a voyeur, experiencing a mere visual whisper of the true nature of the subject. Our Victorian forefathers explored postmortem photography as an object of mourning, and at the close of the nineteenth century when Jack the Ripper had the inhabitants of White Chapel in a grip of fear, photography made its mark as a documentation of violent crime. Today, within contemporary photography, death is now presented within the confines of the 'Art Gallery', as a sensual, and at times, sensationalised art form. In exploring post-mortem imagery, both in holography and conventional photography, absence presents an aspect of death as startling in its unanimated form and detailed in its finite examination of mortality.

  8. Pitfalls in colour photography of choroidal tumours

    PubMed Central

    Schalenbourg, A; Zografos, L

    2013-01-01

    Colour imaging of fundus tumours has been transformed by the development of digital and confocal scanning laser photography. These advances provide numerous benefits, such as panoramic images, increased contrast, non-contact wide-angle imaging, non-mydriatic photography, and simultaneous angiography. False tumour colour representation can, however, cause serious diagnostic errors. Large choroidal tumours can be totally invisible on angiography. Pseudogrowth can occur because of artefacts caused by different methods of fundus illumination, movement of reference blood vessels, and flattening of Bruch's membrane and sclera when tumour regression occurs. Awareness of these pitfalls should prevent the clinician from misdiagnosing tumours and wrongfully concluding that a tumour has grown. PMID:23238442

  9. A Photography Primer for Middle School Students and Teachers.

    ERIC Educational Resources Information Center

    Price, Charles L.

    Project PHOTO provides a format for middle school students to learn about photography with three different types of techniques: sun prints, can cameras, and pinhole cameras. Additional topics and activities include film developing, contact prints and enlarging, history of photography, photographic composition, types of cameras, a photography word…

  10. Key Concepts for Digital Photography. For Tech Leaders

    ERIC Educational Resources Information Center

    Chamberlin, Barbara

    2004-01-01

    Digital photography is an appealing technology to use in the classroom because it is rooted in skills many teachers already have--taking and viewing photos. Some aspects of digital photography are different from traditional photography. Understanding these differences makes all aspects of acquiring, analyzing, creating, and communicating with…

  11. Guidelines for Standard Photography in Gross and Clinical Anatomy

    ERIC Educational Resources Information Center

    Barut, Cagatay; Ertilav, Hakan

    2011-01-01

    Photography has a widespread usage in medicine and anatomy. In this review, authors focused on the usage of photography in gross and clinical anatomy. Photography in gross and clinical anatomy is not only essential for accurate documentation of morphological findings but also important in sharing knowledge and experience. Photographs of cadavers…

  12. Monitoring Wear On Dental Restoration Surfaces Using Microscope Photogrammetry

    NASA Astrophysics Data System (ADS)

    Mitchell, Harvey L.; Chadwick, R. G.; McCabe, John F.

    1989-04-01

    35mm photography of denture teeth and resin replicas through a convergent-axes microscope was used in an assessment of wear in dental restoration materials. The difficulty was to isolate and evaluate the significant photogrammetric parameters, but thereafter, the required depths could be calculated to accuracies of 0.01 mm r.m.s. using stereocomparator observations and quite simple formulae. The technique is applicable to biomedical laboratories which have access to an appropriate microscope if photogrammetric observations can be undertaken.

  13. Dental Calculus Arrest of Dental Caries

    PubMed Central

    Keyes, Paul H.; Rams, Thomas E.

    2016-01-01

    Background An inverse relationship between dental calculus mineralization and dental caries demineralization on teeth has been noted in some studies. Dental calculus may even form superficial layers over existing dental caries and arrest their progression, but this phenomenon has been only rarely documented and infrequently considered in the field of Cariology. To further assess the occurrence of dental calculus arrest of dental caries, this study evaluated a large number of extracted human teeth for the presence and location of dental caries, dental calculus, and dental plaque biofilms. Materials and methods A total of 1,200 teeth were preserved in 10% buffered formal saline, and viewed while moist by a single experienced examiner using a research stereomicroscope at 15-25× magnification. Representative teeth were sectioned and photographed, and their dental plaque biofilms subjected to gram-stain examination with light microscopy at 100× magnification. Results Dental calculus was observed on 1,140 (95%) of the extracted human teeth, and no dental carious lesions were found underlying dental calculus-covered surfaces on 1,139 of these teeth. However, dental calculus arrest of dental caries was found on one (0.54%) of 187 evaluated teeth that presented with unrestored proximal enamel caries. On the distal surface of a maxillary premolar tooth, dental calculus mineralization filled the outer surface cavitation of an incipient dental caries lesion. The dental calculus-covered carious lesion extended only slightly into enamel, and exhibited a brown pigmentation characteristic of inactive or arrested dental caries. In contrast, the tooth's mesial surface, without a superficial layer of dental calculus, had a large carious lesion going through enamel and deep into dentin. Conclusions These observations further document the potential protective effects of dental calculus mineralization against dental caries.

  14. Use of Digital Technology and Support Software Programs in the Private Dental Offices in Nevada

    ERIC Educational Resources Information Center

    Fattore-Bruno, LaDeane

    2009-01-01

    The purpose of this survey research was to determine the diffusion of digital radiography, the electronic oral health record (EOHR), digital intraoral photography, and diagnosis and clinical decision-making support software into the dental offices of Nevada. A cross-sectional survey design was utilized with a random sample of 600 Nevada dentists.…

  15. Dental Caries

    PubMed Central

    Burgess, Ralph C.

    1988-01-01

    Dental caries is one of the most prevalent diseases afflicting mankind. It reached a peak in the 1950s but has been declining drastically in recent years in children and young adults. This article describes the three contributing factors in dental caries: microbial plaque, tooth susceptibility, and diet, and discusses practical preventive measures which help to reduce caries incidence. Some of these, such as vaccines and antimicrobial varnishes, are still in the research stages, while others, such as sucrose substitutes, low-calorie sweeteners, and limitation of frequency of sugar snacks are well established and can be promoted by family physicians. PMID:21253193

  16. Photography of Coral Reefs from ISS

    NASA Technical Reports Server (NTRS)

    Robinson, Julie A.

    2009-01-01

    This viewgraph presentation reviews the uses of photography from the International Space Station (ISS) in studying Earth's coral reefs. The photographs include reefs in various oceans . The photographs have uses for science in assisting NASA mapping initiatives, distribution worldwide through ReefBase, and by biologist in the field.

  17. Developing Geographers through Photography: Enlarging Concepts

    ERIC Educational Resources Information Center

    Sanders, Rickie

    2007-01-01

    This paper explores how photographs can be used to teach urban social geography to second- and third-year university students. In it the author describes her work acquainting students with the skill of "directed observation". She argues that teaching geography through photography is not merely asking students to take pictures but rather, the…

  18. 50 CFR 216.42 - Photography. [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 50 Wildlife and Fisheries 10 2012-10-01 2012-10-01 false Photography. 216.42 Section 216.42 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE...

  19. 32 CFR 705.10 - Still photography.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... on taking photos by the general public, given in § 705.5 apply also to media representatives. (b) Basic policy and procedures for still photos are set forth in the Manual of Naval Photography, OPNAVINST... material has been photographed. In such cases, all unclassified photos will be returned promptly to...

  20. 32 CFR 705.10 - Still photography.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... on taking photos by the general public, given in § 705.5 apply also to media representatives. (b) Basic policy and procedures for still photos are set forth in the Manual of Naval Photography, OPNAVINST... material has been photographed. In such cases, all unclassified photos will be returned promptly to...

  1. 32 CFR 705.10 - Still photography.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... on taking photos by the general public, given in § 705.5 apply also to media representatives. (b) Basic policy and procedures for still photos are set forth in the Manual of Naval Photography, OPNAVINST... material has been photographed. In such cases, all unclassified photos will be returned promptly to...

  2. 32 CFR 705.10 - Still photography.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Naval Photography, par. 0445, subparagraphs 3 and 4. (B) One print, a copy of the letter of transmittal... photographer's superior in recovering film or photographs presumed to be of classified nature. (3) If media... forwarded to the Chief of Information. (d) Release of photographs: (1) Most unclassified photographs...

  3. Multispectral Photography: the obscure becomes the obvious

    ERIC Educational Resources Information Center

    Polgrean, John

    1974-01-01

    Commonly used in map making, real estate zoning, and highway route location, aerial photography planes equipped with multispectral cameras may, among many environmental applications, now be used to locate mineral deposits, define marshland boundaries, study water pollution, and detect diseases in crops and forests. (KM)

  4. Commercial Photography. Occupational Competency Analysis Profile.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. Vocational Instructional Materials Lab.

    This Occupational Competency Analysis Profile (OCAP) for commercial photography is an employer-verified competency list that evolved from a modified DACUM (Developing a Curriculum) job analysis process involving business, industry, labor, and community agency representatives throughout Ohio. The competency list consists of 12 units: (1) business…

  5. A TOOL FOR PLANNING AERIAL PHOTOGRAPHY

    EPA Science Inventory

    abstract The U.S. EPAs Pacific Coastal Ecology Branch has developed a tool in the form of an Excel. spreadsheet that facilitates planning aerial photography missions. The spreadsheet accepts various input parameters such as desired photo-scale and boundary coordinates of the stud...

  6. Digital Photography and Its Impact on Instruction.

    ERIC Educational Resources Information Center

    Lantz, Chris

    Today the chemical processing of film is being replaced by a virtual digital darkroom. Digital image storage makes new levels of consistency possible because its nature is less volatile and more mutable than traditional photography. The potential of digital imaging is great, but issues of disk storage, computer speed, camera sensor resolution,…

  7. 36 CFR 1005.5 - Commercial photography.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... OPERATIONS § 1005.5 Commercial photography. (a) Motion pictures, television. Before any motion picture may be.... (i) No fees will be charged for the making of motion pictures, television productions or sound tracks... in paragraph (a)(4) of this section. (3) Approval of application. Permission to make a motion...

  8. Time sequence photography of Roosters Comb

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The importance of understanding natural landscape changes is key in properly determining rangeland ecology. Time sequence photography allows a landscape snapshot to be documented and enables the ability to compare natural changes overtime. Photographs of Roosters Comb were taken from the same vantag...

  9. Photography/Digital Imaging: Parallel & Paradoxical Histories.

    ERIC Educational Resources Information Center

    Witte, Mary Stieglitz

    With the introduction of photography and photomechanical printing processes in the 19th century, the first age of machine pictures and reproductions emerged. The 20th century introduced computer image processing systems, creating a digital imaging revolution. Rather than concentrating on the adversarial aspects of the computer's influence on…

  10. The Use of Photography in Family Psychotherapy.

    ERIC Educational Resources Information Center

    Entin, Alan D.

    Photographs and family albums are helpful in marriage and family psychotherapy to aid in the understanding of family processes, relationship patterns, goals, expectations, values, traditions, and ideals. Based on the assumption that a photograph is a form of communication, photography can be used to: (1) examine typical family picture-taking…

  11. 50 CFR 216.42 - Photography. [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 10 2013-10-01 2013-10-01 false Photography. 216.42 Section 216.42 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE...

  12. 50 CFR 216.42 - Photography. [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 50 Wildlife and Fisheries 10 2014-10-01 2014-10-01 false Photography. 216.42 Section 216.42 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE...

  13. Smartphone photography in oral and maxillofacial surgery.

    PubMed

    Jamil, F

    2016-01-01

    An increasing number of staff in oral and maxillofacial surgery (OMFS) departments take clinical photographs with their personal phones. We report the results of a survey on the use of smartphone photography in OMFS departments in the United Kingdom, and highlight the guidelines that govern their use and the associated ethical and medicolegal implications. PMID:26499388

  14. 50 CFR 216.42 - Photography. [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Photography. 216.42 Section 216.42 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE...

  15. 50 CFR 216.42 - Photography. [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 50 Wildlife and Fisheries 9 2011-10-01 2011-10-01 false Photography. 216.42 Section 216.42 Wildlife and Fisheries NATIONAL MARINE FISHERIES SERVICE, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE MARINE MAMMALS REGULATIONS GOVERNING THE TAKING AND IMPORTING OF MARINE...

  16. Measuring food intake with digital photography

    Technology Transfer Automated Retrieval System (TEKTRAN)

    The Digital Photography of Foods Method accurately estimates the food intake of adults and children in cafeterias. With this method, images of food selection and leftovers are quickly captured in the cafeteria. These images are later compared with images of 'standard' portions of food using computer...

  17. Dental Assistant.

    ERIC Educational Resources Information Center

    Michigan State Univ., East Lansing. Coll. of Agriculture and Natural Resources Education Inst.

    This curriculum guide, developed for use in dental assistant education programs in Michigan, describes a task-based curriculum that can help a teacher to develop a classroom management system where students learn by doing. It is based on task analysis and reflects the skills, knowledge, and attitudes that employers expect entry-level dental…

  18. Dental crowns

    MedlinePlus

    ... cover a tooth Replace a misshapen tooth or dental implant Correct a misaligned tooth Talk to your dentist ... the tooth pulled and replaced with a tooth implant. Your crown could chip or crack: If you grind your teeth or clench your jaw, you may need to ...

  19. Dental Training Films.

    ERIC Educational Resources Information Center

    Veterans Administration Medical Center, Washington, DC.

    This dental training films catalog is organized into two sections. Section I is a category listing of the films by number and title, indexed according to generalized headings; categories are as follow: anatomy, articulator systems, complete dentures, dental assisting, dental laboratory technology, dental materials, dental office emergencies,…

  20. Dental education and dental practice.

    PubMed Central

    Moore, J R

    1984-01-01

    This paper relates recent modes of dental practice to changes that the public and government are likely to ask the health care professions to make in the future. As usual they are asking for the best of all worlds. First, that we maintain the clinical model to the highest standards of personal dental care based and tested against the best research at our disposal, whilst we ensure there is no reduction in the high technical standards for which british dentists have a reputation. Second, that the profession is required to consider ways of providing care on the medicosocial model for the whole community at an economic level the country will afford. The broad changes in dental education have been reviewed, from the technical apprenticeship to the establishment of strong university departments in teaching hospitals. The importance of a sound biomedical foundation and of research both to education and the credibility of dental practice as a primary health care profession is stressed if the profession is to retain its position as a sister to medicine and not slide down to that of a technical ancillary. PMID:6374141

  1. Dental x-rays

    MedlinePlus

    ... or impacted teeth The presence and extent of dental caries (cavities) Bone damage (such as from periodontitis ) Abscessed ... Dental x-rays can reveal dental cavities (tooth decay) before they ... take yearly bitewings for the early development of cavities.

  2. Study of high speed photography measuring instrument

    NASA Astrophysics Data System (ADS)

    Zhang, Zhijun; Sun, Jiyu; Wu, Keyong

    2007-01-01

    High speed photograph measuring instrument is mainly used to measure and track the exterior ballistics, which can measure the flying position of the missile in the initial phase and trajectory. A new high speed photograph measuring instrument is presented in this paper. High speed photography measuring system records the parameters of object real-time, and then acquires the flying position and trajectory data of the missile in the initial phase. The detection distance of high speed photography is more than 4.5km, and the least detection distance is 450m, under the condition of well-balanced angular velocity and angular acceleration, program pilot track error less than 5'. This instrument also can measure and record the flying trail and trajectory parameters of plane's aero naval missile.

  3. Catalogs of Space Shuttle earth observations photography

    NASA Technical Reports Server (NTRS)

    Lulla, Kamlesh; Helfert, Michael

    1990-01-01

    A review is presented of postflight cataloging and indexing activities of mission data obtained from Space Shuttle earth observations photography. Each Space Shuttle mission acquires 1300-4400 photographs of the earth that are reviewed and interpreted by a team of photointerpreters and cataloging specialists. Every photograph's manual and electronic set of plots is compared for accuracy of its locational coordinates. This cataloging activity is a critical and principal part of postflight activity and ensures that the database is accurate, updated and consequently made meaningful for further utilization in the applications and research communities. A final product in the form of a Catalog of Space Shuttle Earth Observations Handheld Photography is published for users of this database.

  4. Dental Holography

    NASA Astrophysics Data System (ADS)

    Dirtoft, Ingegerd

    1983-12-01

    Ten years have passed since the first articles appeared in this new field. The qualities of the laser light together with the need of contactless 3-D measurements for different dental purposes seemed to be extremely promising, but still just a few scientists have used the method and mostly for laboratory studies. For some reason there has been a preponderance for orthodontic measurements. This seems to be a bit peculiar from holographic view compared with measurements for engineering purposes, which usually are made on metals. So naturally holography can become a clinical tool for measurements in the field of fixed bridges, removable partial dentures and implants. One of the problems is that the need for holography in dental research must be fulfilled in collaboration with physicists. Only a two-way communication during an entire experiment can balance both technical and odontological demands and thus give practical and clinical important results. The need for an easy way of handling the evaluation to get all required information is another problem and of course the holographic equipment must be converted to a box easy to handle for everyone. At last the position of dental holography today is going to be carefully examined together with an attempt to look into the hopefully exciting and not to utopic future for this research field.

  5. Monitoring tropical environments with Space Shuttle photography

    NASA Technical Reports Server (NTRS)

    Helfert, Michael R.; Lulla, Kamlesh P.

    1989-01-01

    Orbital photography from the Space Shuttle missions (1981-88) and earlier manned spaceflight programs (1962-1975) allows remote sensing time series to be constructed for observations of environmental change in selected portions of the global tropics. Particular topics and regions include deforestation, soil erosion, supersedimentation in streams, lacustrine, and estuarine environments, and desertification in the greater Amazon, tropical Africa and Madagascar, South and Southeast Asia, and the Indo-Pacific archipelagoes.

  6. BOREAS Level-0 C-130 Aerial Photography

    NASA Technical Reports Server (NTRS)

    Newcomer, Jeffrey A.; Dominguez, Roseanne; Hall, Forrest G. (Editor)

    2000-01-01

    For BOReal Ecosystem-Atmosphere Study (BOREAS), C-130 and other aerial photography was collected to provide finely detailed and spatially extensive documentation of the condition of the primary study sites. The NASA C-130 Earth Resources aircraft can accommodate two mapping cameras during flight, each of which can be fitted with 6- or 12-inch focal-length lenses and black-and-white, natural-color, or color-IR film, depending upon requirements. Both cameras were often in operation simultaneously, although sometimes only the lower resolution camera was deployed. When both cameras were in operation, the higher resolution camera was often used in a more limited fashion. The acquired photography covers the period of April to September 1994. The aerial photography was delivered as rolls of large format (9 x 9 inch) color transparency prints, with imagery from multiple missions (hundreds of prints) often contained within a single roll. A total of 1533 frames were collected from the C-130 platform for BOREAS in 1994. Note that the level-0 C-130 transparencies are not contained on the BOREAS CD-ROM set. An inventory file is supplied on the CD-ROM to inform users of all the data that were collected. Some photographic prints were made from the transparencies. In addition, BORIS staff digitized a subset of the tranparencies and stored the images in JPEG format. The CD-ROM set contains a small subset of the collected aerial photography that were the digitally scanned and stored as JPEG files for most tower and auxiliary sites in the NSA and SSA. See Section 15 for information about how to acquire additional imagery.

  7. Electron speckle photography: some recent advances

    NASA Astrophysics Data System (ADS)

    Chiang, Fu-pen

    2006-09-01

    When the speckle pattern is displaced, the displacement vector can be obtained by performing a correlation comparison between the two patterns, either optically or numerically. The so-called speckle photography technique has become an important metrological, strain analysis and fluid mechanics tool. The resolution of speckle technique depends on the size of the speckles employed. For an optical recording system, it is essentially limited to the wavelength of the light used and is about 0.5μm within the visible spectrum. In 1982 Chiang introduced the electron speckle photography concept whereby sub-micron and nanometer speckles were created via a process of physical vapor deposition and recording was made by an electron microscope, either a SEM or a TEM. As a result the resolution of speckle photography was increased by several orders of magnitude. With the advancement of digital speckle techniques the method is now fully automated. This paper discusses the current state art of this technique, and its application to the determination of differential thermal strains in electronic packaging, shear band formation in the lamellar interfaces of TiAl and prediction of the crack growth, the size effect of MEMS material SU-8, the micro-mechanical properties of artificial tissues, and the mechanical properties of metal oxide nanofibers. Also discussed in the paper are potential applications of this technique to nanotechnology and bio mechanics.

  8. Mars Cameras Make Panoramic Photography a Snap

    NASA Technical Reports Server (NTRS)

    2008-01-01

    If you wish to explore a Martian landscape without leaving your armchair, a few simple clicks around the NASA Web site will lead you to panoramic photographs taken from the Mars Exploration Rovers, Spirit and Opportunity. Many of the technologies that enable this spectacular Mars photography have also inspired advancements in photography here on Earth, including the panoramic camera (Pancam) and its housing assembly, designed by the Jet Propulsion Laboratory and Cornell University for the Mars missions. Mounted atop each rover, the Pancam mast assembly (PMA) can tilt a full 180 degrees and swivel 360 degrees, allowing for a complete, highly detailed view of the Martian landscape. The rover Pancams take small, 1 megapixel (1 million pixel) digital photographs, which are stitched together into large panoramas that sometimes measure 4 by 24 megapixels. The Pancam software performs some image correction and stitching after the photographs are transmitted back to Earth. Different lens filters and a spectrometer also assist scientists in their analyses of infrared radiation from the objects in the photographs. These photographs from Mars spurred developers to begin thinking in terms of larger and higher quality images: super-sized digital pictures, or gigapixels, which are images composed of 1 billion or more pixels. Gigapixel images are more than 200 times the size captured by today s standard 4 megapixel digital camera. Although originally created for the Mars missions, the detail provided by these large photographs allows for many purposes, not all of which are limited to extraterrestrial photography.

  9. Dental Fear among Medical and Dental Undergraduates

    PubMed Central

    Hakim, H.; Razak, I. A.

    2014-01-01

    Objective. To assess the prevalence and level of dental fear among health related undergraduates and to identify factors causing such fear using Kleinknecht's Dental Fear Survey (DFS) questionnaire. Methods. Kleinknecht's DFS questionnaire was used to assess dental fear and anxiety among the entire enrollment of the medical and dental undergraduates' of the University of Malaya. Results. Overall response rate was 82.2%. Dental students reported higher prevalence of dental fear (96.0% versus 90.4%). However, most of the fear encountered among dental students was in the low fear category as compared to their medical counterpart (69.2 versus 51.2%). Significantly more medical students cancelled dental appointment due to fear compared to dental students (P = 0.004). “Heart beats faster” and “muscle being tensed” were the top two physiological responses experienced by the respondents. “Drill” and “anesthetic needle” were the most fear provoking objects among respondents of both faculties. Conclusion. Dental fear and anxiety are a common problem encountered among medical and dental undergraduates who represent future health care professionals. Also, high level of dental fear and anxiety leads to the avoidance of the dental services. PMID:25386615

  10. Clinical Photography for Periorbital and Facial Aesthetic Practice

    PubMed Central

    Nair, Akshay Gopinathan; Santhanam, Aparna

    2016-01-01

    External cutaneous photography involves photographic documentation, which helps in treatment planning, documentation of facial features, teaching, publishing and pre- and post-procedural comparisons. The key is not simply documenting, but documenting it the right way and ensuring that photography is standardised and reproducible. In this review, basic photography techniques, standardised and reproducible angles such as frontal, oblique and lateral views and specific photographic angles for conditions such as facial rejuvenation are discussed. Use of photography accessories and a few tips on how to click good photographs in the examination room and how to achieve consistency in standardised photography are also presented. External photography in ophthalmic and facial plastic surgery like any other speciality too has standardised guidelines. Even small variations cause a drastic change in the photos and it's clinical and research value. Unless stringent criteria are met, the photographs lose their relevance and impact. PMID:27398013

  11. A survey of earth resources on Apollo 9 photography

    NASA Technical Reports Server (NTRS)

    Colwell, R. N.

    1969-01-01

    The types of photography obtained on the Apollo 9 mission and on concurrent flights made by supporting aircraft are described. The need for earth resource surveys and the value of aircraft and spacecraft as the platforms from which to make such surveys are considered along with the rational for using multiband photography and the means by which such photography can be enhanced. Aerial and space photographs are presented and analyzed. The feasibility of conducting earth resource surveys by means of space photography is discussed and results are summarized.

  12. Infant dental care (image)

    MedlinePlus

    ... child to bed with a bottle of milk, juice, or sugar water. As the child grows, establishing proper dental hygiene will promote healthy teeth and gums which are essential to overall good health. Poor dental development, dental disease, and dental trauma ...

  13. Dental education in Colombia

    PubMed Central

    Jaramillo, Jorge A.; Pulido, Jairo H. Ternera; Núñez, Jaime A. Castro; Bird, William F.; Komabayashi, Takashi

    2014-01-01

    This article describes Colombia's development of formal dentistry, its dental school system, curriculum, and dental licensure, and current issues in oral health care. In 1969, there were only 4 dental schools in Colombia; at this writing there are 21. Five dental schools are public and the other 16 are private. Nearly all classes are conducted in Spanish. Undergraduate pre-dental coursework is not a prerequisite for dental school in Colombia. To obtain licensure, Colombian dental students must complete 5 years of study in dental school, earn a diploma, and work for the government for 1 year. There are approximately 41,400 dentists in Colombia, and the number is increasing quickly. However, the unemployment rate among dentists is very high, even though graduation from dental school is extremely difficult. Although the 1,100:1 ratio of citizens to dentists is considered satisfactory, access to dental care is limited due to the high rate of poverty. PMID:20339245

  14. Atypical Forensic Dental Identifications.

    PubMed

    Cardoza, Anthony R; Wood, James D

    2015-06-01

    Forensic dental identification specialists are typically the last conventional option for postmortem identification. Forensic dental identification is most often accomplished by comparing radiographs of the decedent's teeth with the dental radiographs obtained from the dentist of the suspected victim. Unfortunately, antemortem dental radiographs are not always available. When presented with this challenge, the authors of this article have been successful in completing identifications using means other than dental radiographic comparison. PMID:26126345

  15. Dental stem cell patents.

    PubMed

    Morsczeck, Christian; Frerich, Bernhard; Driemel, Oliver

    2009-01-01

    A complex human tissue harbors stem cells that are responsible for its maintenance or repair. These stem cells have been isolated also from dental tissues such as the periodontal ligament, dental papilla or dental follicle and they may offer novel applications in dentistry. This following review summarizes patents about dental stem cells for dental tissue engineering and considers their value for regenerative dentistry. PMID:19149737

  16. Standards and practices for bite mark photography.

    PubMed

    Golden, G S

    2011-12-01

    In most crimes where bite marks are discovered, photographic accuracy is crucial to the investigative process since in many instances the bite mark(s) may be the only evidence linking a particular suspect to the crime. Therefore, the rationale for employing superior photographic principles is mandatory for the investigation team. This paper will discuss current standards, best practice, and armamentaria for digital photography of bite mark injuries on skin. Full spectrum protocols will be described including Alternate Light Imaging, Reflective Ultra-violet, and Infrared techniques for photo-documentation of images of bite marks and other bruise patterns that have been inflicted on human skin. PMID:22717911

  17. Snap It up! Using Digital Photography in Early Childhood

    ERIC Educational Resources Information Center

    Good, Linda

    2005-01-01

    The digital camera has many uses in an early learning environment. However, there are some prerequisites to implementing the use of digital photography. In this article, the author offers some categories of usage as well as some concrete ideas for implementation of digital photography. She discusses how photos can be used (1) to give children…

  18. The Roles of Photography for Developing Literacy across the Disciplines

    ERIC Educational Resources Information Center

    Cappello, Marva; Lafferty, Karen E.

    2015-01-01

    Teachers can capitalize on the overwhelmingly visual nature of contemporary society for learning and teaching through integrating photography in their classroom instruction. In offering an alternative pathway for acquiring and expressing knowledge, photography has the potential to strengthen instruction across disciplines by drawing on multiple…

  19. Using Digital Photography to Supplement Learning of Biotechnology

    ERIC Educational Resources Information Center

    Norflus, Fran

    2012-01-01

    The author used digital photography to supplement learning of biotechnology by students with a variety of learning styles and educational backgrounds. Because one approach would not be sufficient to reach all the students, digital photography was used to explain the techniques and results to the class instead of having to teach each student…

  20. Instant Photography and Learning: The Polaroid Education Project.

    ERIC Educational Resources Information Center

    Nash, Paul

    1982-01-01

    Describes the effects of elementary curriculum materials using instant photography developed for the Polaroid Education Project. The materials most effectively reached students who do not respond to verbal materials. Students and teachers shared authority in interpreting student photographs. Photography activities increased parent interest and…

  1. Earth observations and photography experiment: Summary of significant results

    NASA Technical Reports Server (NTRS)

    El-Baz, F.

    1978-01-01

    Observation and photographic data from the Apollo Soyuz Test Project are analyzed. The discussion is structured according to the fields of investigation including: geology, desert studies, oceanography, hydrology, and meteorology. The data were obtained by: (1) visual observations of selected Earth features, (2) hand-held camera photography to document observations, and (3) stereo mapping photography of areas of significant scientific interest.

  2. Picture This: Using Photography to Conceptualize Social Justice

    ERIC Educational Resources Information Center

    DeJean, William

    2008-01-01

    In this article, the author describes how he used photography to conceptualize social justice to a group of undergraduate students. As part of their final assessment, the students were required to take photographs that represented their understanding of social justice. The author believed that photography provided a rich way to understand student…

  3. Talking about Practice: Photography Students, Photographic Culture and Professional Identities.

    ERIC Educational Resources Information Center

    Newbury, Darren

    1997-01-01

    Observes that photographic education has inspired little research despite the sociocultural importance of photography. Looks at how professional-photography students talk about their art. Argues that photographic education has its own professionalized discourse. Considers alternative approaches developed outside the mainstream of photographic…

  4. Dental hyponatraemia.

    PubMed

    Simpson, R M

    2011-08-01

    A 14-year-old girl developed dental pain and was treated for acute infected pulpitis of her right upper lateral incisor with drilling and filling. The pain continued and was helped by analgesia, sucking ice cubes and drinking cold water. Forty-eight hours later, she became confused and disoriented. She started to vomit and complained of headache. Investigations revealed hyponatraemia with normal serum potassium levels and initially normal urinary sodium excretion. Over the next 24 hours, she passed 5.45 L of urine and her serum sodium rose from 125 to 143 mmol/L. Self-induced water intoxication has been described during drinking games and initiation ceremonies, but this would appear to an unusual cause. Conservative management proved successful in allowing this girl to recover without sequelae. PMID:21873727

  5. Geologic applications of Space Shuttle photography

    NASA Technical Reports Server (NTRS)

    Wood, Charles A.

    1989-01-01

    Space Shuttle astronauts have used handheld cameras to take about 30,000 photographs of the earth as seen from orbit. These pictures provide valuable, true-color depictions of many geologically significant areas. While the photographs have areal coverages and resolutions similar to the more familiar Landsat MSS and TM images, they differ from the latter in having a wide variety of solar illumination angles and look angles. Astronaut photographs can be used as very small scale aerial photographs for geologic mapping and planning logistical support for field work. Astronaut photography offers unique opportunities, because of the intelligence and training of the on-orbit observer, for documenting dynamic geologic activity such as volcanic eruptions, dust storms, etc. Astronauts have photographed more than 3 dozen volcanic eruption plumes, some of which were not reported otherwise. The stereographic capability of astronaut photography also permits three-dimensional interpretation of geologic landforms which is commonly useful in analysis of structural geology. Astronauts have also photographed about 20 known impact craters as part of project to discover presently unknown examples in Africa, South America, and Australia.

  6. Survey of developing electronic photography standards

    NASA Astrophysics Data System (ADS)

    Holm, Jack M.

    1996-01-01

    The ISO TC42/WG18 and ANSI/NAPM IT10 Technical Committees are developing the following standards related to electronic still photography: ISO 12231 -- Glossary of technical terms; ISO 12232 -- Determination of ISO speed; ISO 12233 -- Resolution measurements; ISO 12234 -- Removable memory; and ISO 14524 -- OECF measurement methods. ISO 12231 is at the DIS stage, ISO 12234 and 14524 are at the CD stage, and ISO 12232 and 12233 will most likely reach the CD stage within a year. Since most of these documents are approaching final form, it is useful to examine them in some detail. Presented here are summaries of the contents of these standards accompanied by comments on their application and state of development. These standards are viewed from a broad digital photography perspective, and placed in context with other work in this area. Significant research has been accomplished in these committees, and is discussed in relation to fundamental imaging issues. Also discussed are future projects and areas where standardization is needed but little has been accomplished. In addition to providing a forum for the development of standards, technical committees are an important avenue for interaction between companies, user groups, and the government. Such avenues can have a great impact on emerging technologies.

  7. [Dental records and responsibility].

    PubMed

    Brands, W G

    2006-03-01

    Dental records are more than a small part of the bookkeeping. In most dental practises, keeping records is the task of a dental assistant. In civil court, the dentist is in most countries liable for the mistakes of his employees. In disciplinary court however there may be doubt whether the dentist is responsible for the mistakes of his assistant. Contrary to their American colleagues, Dutch dental assistants and dental hygienists cannot be summoned before a disciplinary court. As these para-medics perform more and more dental treatment, independently or after delegation, they should be assigned there own disciplinary responsibility. PMID:16566401

  8. Dental Auxiliary Occupations. Interim Report.

    ERIC Educational Resources Information Center

    Kingston, Richard D.

    As part of a dental auxiliaries project, a Dental Auxiliary National Technical Advisory Committee was established, and its major undertaking was to assist in the development of a functional inventory for each of the three dental auxiliary occupations (dental assisting, dental hygiene, and dental laboratory technology). The analysis consisted of…

  9. Near-terminator and earthshine photography. [special lunar photography obtained during Apollo 17 flight

    NASA Technical Reports Server (NTRS)

    Head, J. W.; Lloyd, D.

    1973-01-01

    Photographic results obtained during the Apollo 17 flight for the near terminator and earthshine conditions are discussed. Lunar surface photographs taken in the vicinity of the sunshine terminator provide important information that is not obtained on photographs taken at higher sun evaluation angles. Earthshine photography also provides data on low relief, crater morphology, and small scale structures. Examples of photographs of the lunar surface taken under both conditions are provided.

  10. Dental x-rays

    MedlinePlus

    X-ray - teeth; Radiograph - dental; Bitewings; Periapical film; Panoramic film ... dentist's office. There are many types of dental x-rays. Some are: Bitewing Periapical Palatal (also called occlusal) ...

  11. Dental education in Mexico.

    PubMed

    Masuoka, David; Komabayashi, Takashi; Reyes-Vela, Enrique

    2014-06-01

    The aim of this article is to provide information about dental education in Mexico, including its history, the dental school system, curriculum and dental licensure. In 1977, there were only 59 Mexican dental schools; however, there were 83 schools registered in the last official national count in 2007. Forty-one dental schools are public, and the other 42 are private. Every year the number of private dental schools increases. Admission to dental schools in Mexico requires a high school diploma. All classes are conducted in Spanish. To obtain licensure in Mexico, dental students must complete a 3 to 5-year program plus a year of community service. No formal nationwide standard clinical/didactic curriculum exists in Mexico. There are approximately 153,000 dentists in Mexico, a number that increases each year. The dentist-patient ratio is approximately 1:700. However, the high percentage of inactive licensed dentists in Mexico points to a serious problem. PMID:24984634

  12. Dental education in Malaysia.

    PubMed

    Komabayashi, Takashi; Razak, Abdul Aziz Abdul; Bird, William F

    2007-12-01

    There was only one dental school in Malaysia until 1997 but five new schools have been established since 1998. This review provides information about dental education in Malaysia including; the history of dental education, the current dental school system and curriculum, and dental licensure. There are four public and two private dental schools in Malaysia. High school graduates are required to take the nationwide matriculation entrance examination or the Higher School Certificate (HSC) to apply for a dental degree programme. A five-year dental programme leads to the BDS or the DDS degree. National or state examinations are not required to practise dentistry. Currently, there are approximately 2,500 dentists, with a ratio of 1 dentist for every 10,000 people. PMID:18265775

  13. American Dental Education Association

    MedlinePlus

    ... work hard to help your students fulfill their dreams, and play a crucial... Learn more Dental School ... Terms of Use | Website Feedback | Website Help ©2016 American Dental Education Association® (ADEA), 655 K Street, NW, ...

  14. Lunar orbital photography of astronomical phenomena.

    NASA Technical Reports Server (NTRS)

    Mercer, R. D.; Dunkelman, L.; Ross, C. L.; Worden, A.

    1972-01-01

    This paper reports further progress on photography of faint astronomical and geophysical phenomena accomplished during the recent Apollo missions. Command module pilots have been able to photograph such astronomical objects as the solar corona, zodiacal light-corona transition region, lunar libration region, and portions of the Milky Way. The methods utilized for calibration of the film by adaptation of the High Altitude Observatory sensitometer are discussed. Kodak 2485 high-speed recording film was used in both 35-mm and 70-mm formats. The cameras used were Nikon f/1.2 55-mm focal length and Hasselblad f/2.8 80-mm focal length. Preflight and postflight calibration exposures were included on both the flight and control films, corresponding to luminances extending from the inner solar corona to as faint as 1/10 of the luminance of the light of the night sky. The photographs obtained from unique vantage points available during lunar orbit are discussed.

  15. [Silhouettes: electron microscopic photography in bioscience].

    PubMed

    Breidbach, Olaf

    2005-06-01

    The paper describes the first attempts of biological electron microphotography. It starts with a description of the early use of electron microscopy in biology, showing that electron microscopy was used as an extension of former light microscopical studies. Thus, the pictures produced by electron microscopy are interpreted as describing the micro-texture of those structures already seen in light microscopy. That was done irrespective from the specific problems of tissue preparation for electron microscopy. The use of photography in electron microscopy is discussed in more detail. It is shown that in electron microscopy, not the preparation itself which is usually destroyed or damaged during observation in the electron microscope. Thus, biological electron microscopy can be described as a real image science. PMID:16060072

  16. Photography and imagery: a clarification of terms

    USGS Publications Warehouse

    Robinove, Charles J.

    1963-01-01

    The increased use of pictorial displays of data in the fields of photogrammetry and photo interpretation has led to some confusion of terms, not so much b photogrammetrists as bu users and interpreters of pictorial data. The terms "remote sensing" and "remote sensing of environment" are being used as general terms to describe "the measurement of some property of an object without having the measuring device physically in contact with the object" (Parker, 1962). Measurements of size and shape by photogrammetric and optical means are common examples of remote sensing and therefore require no elaboration. Other techniques of remote sensing of electromagnetic radiation in and beyond the limits of the visible spectrum require some explanation and differentiation from the techniques used in the visible spectrum. The following definitions of "photography" and "imagery" are proposed to clarify these two terms in hope that this will lead to more precise understanding and explanation of the processes.

  17. Measuring food intake with digital photography

    PubMed Central

    Martin, Corby K.; Nicklas, Theresa; Gunturk, Bahadir; Correa, John B.; Allen, H. Raymond; Champagne, Catherine

    2014-01-01

    The Digital Photography of Foods Method accurately estimates the food intake of adults and children in cafeterias. When using this method, imags of food selection and leftovers are quickly captured in the cafeteria. These images are later compared to images of “standard” portions of food using a computer application. The amount of food selected and discarded is estimated based upon this comparison, and the application automatically calculates energy and nutrient intake. Herein, we describe this method, as well as a related method called the Remote Food Photography Method (RFPM), which relies on Smartphones to estimate food intake in near real-time in free-living conditions. When using the RFPM, participants capture images of food selection and leftovers using a Smartphone and these images are wirelessly transmitted in near real-time to a server for analysis. Because data are transferred and analyzed in near real-time, the RFPM provides a platform for participants to quickly receive feedback about their food intake behavior and to receive dietary recommendations to achieve weight loss and health promotion goals. The reliability and validity of measuring food intake with the RFPM in adults and children will also be reviewed. The body of research reviewed herein demonstrates that digital imaging accurately estimates food intake in many environments and it has many advantages over other methods, including reduced participant burden, elimination of the need for participants to estimate portion size, and incorporation of computer automation to improve the accuracy, efficiency, and the cost-effectiveness of the method. PMID:23848588

  18. Observation of diesel spray by pseudo-high-speed photography

    NASA Astrophysics Data System (ADS)

    Umezu, Seiji; Oka, Mohachiro

    2001-04-01

    Pseudo high speed photography has been developed to observe intermittent, periodic and high speed phenomena like diesel spray. Main device of this photography consists of Automatic Variable Retarder (AVR) which delays gradually timing between diesel injection and strobe spark with the micrometer. This technique enables us to observe diesel spray development just like images taken by a high speed video camera. This paper describes a principle of pseudo high speed photography, experimental results of adaptation to diesel spray and analysis of the diesel atomization mechanism.

  19. Dental Laboratory Technology.

    ERIC Educational Resources Information Center

    Department of the Air Force, Washington, DC.

    The Air Force dental laboratory technology manual is designed as a basic training text as well as a reference source for dental laboratory technicians, a specialty occupation concerned with the design, fabrication, and repair of dental prostheses. Numerous instructive diagrams and photographs are included throughout the manual. The comprehensive…

  20. Perspectives from Dental Research.

    ERIC Educational Resources Information Center

    Baum, Bruce J.

    1996-01-01

    This paper responds to the Institute of Medicine's 1995 report concerning the present status and future needs of dental education in the United States. It examines whether real reform is occurring at the National Institute of Dental Research, within the academic dental community, and within the practicing profession. It concludes that very little…

  1. Dental Manpower Fact Book.

    ERIC Educational Resources Information Center

    Ake, James N.; Johnson, Donald W.

    Statistical data on many aspects of dental and allied dental personnel supply, distribution, characteristics, and education and on certain other aspects of dental services are presented and discussed. The data on dentist supply show the national trend in the supply of active dentists since 1950 and the concurrent changes in dentist-to-population…

  2. DENTAL SCHOOL PLANNING.

    ERIC Educational Resources Information Center

    GALAGAN, DONALD J.

    THIS DISCUSSION PRESENTS A COMPLETE PICTURE OF THE CURRENT STATE OF DENTAL EDUCATION WITH SUGGESTIONS FOR MEETING THE DEMANDS FOR DENTAL STAFF AND FACILITIES. THE AREAS INVESTIGATED ARE (1) OBJECTIVES IN DENTAL EDUCATION--COURSES, TEACHING MODES, INNOVATIONS IN CURRICULUM, COORDINATION OF BASIC AND CLINICAL INSTRUCTION, (2) FACILITY…

  3. Weaker dental enamel explains dental decay.

    PubMed

    Vieira, Alexandre R; Gibson, Carolyn W; Deeley, Kathleen; Xue, Hui; Li, Yong

    2015-01-01

    Dental caries continues to be the most prevalent bacteria-mediated non-contagious disease of humankind. Dental professionals assert the disease can be explained by poor oral hygiene and a diet rich in sugars but this does not account for caries free individuals exposed to the same risk factors. In order to test the hypothesis that amount of amelogenin during enamel development can influence caries susceptibility, we generated multiple strains of mice with varying levels of available amelogenin during dental development. Mechanical tests showed that dental enamel developed with less amelogenin is "weaker" while the dental enamel of animals over-expressing amelogenin appears to be more resistant to acid dissolution. PMID:25885796

  4. Safety in the Chemical Laboratory: Hazards in a Photography Lab.

    ERIC Educational Resources Information Center

    Houk, Cliff; Hart, Charles

    1987-01-01

    Described are case studies illustrating chemical hazards in a photography lab due to compounds containing cyanide. Suggestions for preventing problems including proper procedures, housekeeping, facilities, and ventilation are considered. (RH)

  5. Working with images: applying writing principles to photography

    SciTech Connect

    Silverstein, A.P.

    1982-01-05

    Photography and writing are two media with the power to communicate. Both use a language: photogrphy uses images, writing uses words. Recognizing this similarity can help the writer/editor who knows very little about photography. If you regard a photography assignment in the same light as a writing assignment, you can apply the general principles of writing to photography. For instance, before you begin to create in any medium you need to consider your audience, your purpose, and your format. Next, you need to get to know your equipment, overcome your anxieties, and get started (often the most difficult step of the whole process). As you create and while you edit, remember these simple rules which hold true for words and images: Keep it clear and simple, beware of jargon, and choose the active voice.

  6. Aerial photography summary record system - five years later.

    USGS Publications Warehouse

    Lauterborn, T.J.

    1980-01-01

    Describes the APSRS, an automated information system for conventional aerial photography projects, established after the formation of the National Cartographic Information Center in the US Geological Survey in 1974. -after Author

  7. Evaluating post-Katrina recovery in Mississippi using repeat photography.

    PubMed

    Burton, Christopher; Mitchell, Jerry T; Cutter, Susan L

    2011-07-01

    Hurricane Katrina of August 2005 had extensive consequences for the state of Mississippi in the United States. Widespread infrastructure and property damage, massive social dislocation, and ecological loss remain among the many challenges faced by communities as they work towards 'normalcy'. This study employs repeat photography to understand differential recovery from Hurricane Katrina in Mississippi. Revealing change with conventional landscape photography, a process known as repeat photography, is common in the natural sciences. Simply stated, repeat photography is the practice of re-photographing the same scene as it appears in an earlier photograph. Photographs were taken at 131 sites every six months over a three-year period. Each photograph was assigned a recovery score and a spatially interpolated recovery surface was generated for each time period. The mapped and graphed results show disparities in the progression of recovery: some communities quickly entered the rebuilding process whereas others have lagged far behind. PMID:21272057

  8. 40. PHOTOGRAPHY OF ORIGINAL PLAN (MINNEAPOLIS CITY ENGINEER) PLAN OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    40. PHOTOGRAPHY OF ORIGINAL PLAN (MINNEAPOLIS CITY ENGINEER) PLAN OF SOUTH HALF CENTRE PIER, STEEL ARCH BRIDGE (4 x 5 negative) - Steel Arch Bridge, Hennepin Avenue spanning west channel of Mississippi River, Minneapolis, Hennepin County, MN

  9. Medical photography: current technology, evolving issues and legal perspectives.

    PubMed

    Harting, M T; DeWees, J M; Vela, K M; Khirallah, R T

    2015-04-01

    Medical photographic image capture and data management has undergone a rapid and compelling change in complexity over the last 20 years. This is because of multiple factors, including significant advances in ease of photograph capture, alongside an evolution of mechanisms of data portability/dissemination, combined with governmental focus on health information privacy. Literature to guide medical, legal, governmental and business professionals when dealing with issues related to medical photography is virtually nonexistent. Herein, we will address the breadth of uses of medical photography, device properties/specific devices utilised for image capture, methods of data transfer and dissemination and patient perceptions and attitudes regarding photography in a medical setting. In addition, we will address the legal implications, including legal precedent, copyright and privacy law, informed consent, protected health information and the Health Insurance Portability and Accountability Act (HIPAA), as they pertain to medical photography. PMID:25708063

  10. An evaluation of multiband photography for rock discrimination

    NASA Technical Reports Server (NTRS)

    Raines, G. L.; Lee, K.

    1974-01-01

    The ability of multiband photography to discriminate sedimentary rocks is investigated. Measurements showed that there is a large natural variation in the band reflectance of rock formations and that the differences in the contrast ratios for different Wratten filters is small, making it statistically impossible to select a set of best bands from in situ reflectance measurements. It is concluded that the designed multiband photography concept is not a practical method for improving sedimentary-rock discrimination capabilities.

  11. The poetry of light: Herschel, art and photography.

    NASA Astrophysics Data System (ADS)

    Schaaf, L. J.

    The public disclosure of photography was played out in a drama where personalities and nationalistic rivalries frequently overshadowed true scientific and artistic advances. Unwittingly plunged into centre of this confused drama was Sir John Herschel. His unusually diverse background equipped him to comprehend at once both the immedate practice and the future potential of photography. He supplied cruical elements to its technical foundation and established outlines for its systematic growth.

  12. Description and Documentation of the Dental School Dental Delivery System.

    ERIC Educational Resources Information Center

    Chase, Rosen and Wallace, Inc., Alexandria, VA.

    A study was undertaken to describe and document the dental school dental delivery system using an integrated systems approach. In late 1976 and early 1977, a team of systems analysts and dental consultants visited three dental schools to observe the delivery of dental services and patient flow and to interview administrative staff and faculty.…

  13. Reconstruction of crimes by infrared photography.

    PubMed

    Sterzik, V; Bohnert, M

    2016-09-01

    Whenever blunt or sharp forces are used in a crime, analysis of bloodstain pattern distribution may provide important information for the reconstruction of happenings. Thereby, attention should be paid to both the crime scene and the clothes of everyone involved in the crime. On dark textiles, though, it is difficult or even impossible for the human eye to detect bloodstains because of the low contrast to the background. However, in the near infrared wavelength range, contrast is considerably higher. Many textiles reflect light beyond a wavelength of 830 nm and thus appear light-colored, whereas blood absorbs the light and appears dark. In our studies, a D7000 NIKON reflex camera modified for infrared photography produced high-resolution photographs visualizing even very small spatter stains on dark textiles. The equipment can be used at any crime scene or lab and provides immediately available and interpretable images. Thus, important findings can be obtained at an early stage of police investigations, as two examples (homicide and attempted homicide) illustrate. PMID:26932868

  14. Employment of Dental Hygienists as Dental Educators.

    ERIC Educational Resources Information Center

    Fong, Cynthia; Odrich, Johanna

    1987-01-01

    A study of the use of dental hygienists to teach periodontics, preventive dentistry, community dentistry, and public health courses looked at employment patterns and practices and the qualifications of the teachers. (MSE)

  15. Meeting Dental Health Needs Through Dental Education

    ERIC Educational Resources Information Center

    Morris, Alvin L.

    1972-01-01

    Dental health needs of the country cannot be met through education of more dentists. Rather, we must educate auxiliaries to perform many of the intraoral procedures now regarded the sole responsibility of dentists. (SB)

  16. Electronic photography at NASA Langley Research Center

    NASA Astrophysics Data System (ADS)

    Holm, Jack M.

    1994-12-01

    The field of photography began a metamorphosis several years ago which promises to fundamentally change how images are captured, transmitted, and output. At this time the metamorphosis is still in the early stages, but already new processes, hardware, and software are allowing many individuals and organizations to explore the entry of imaging into the information revolution. Exploration at this time is prerequisite to leading expertise in the future, and a number of branches at LaRC have ventured into electronic and digital imaging. Their progress until recently has been limited by two factors: the lack of an integrated approach and the lack of an electronic photographic capability. The purpose of the research conducted was to address these two items. In some respects, the lack of electronic photographs has prevented application of an integrated imaging approach. Since everything could not be electronic, the tendency was to work with hard copy. Over the summer, the Photographics Section has set up an Electronic Photography Laboratory. This laboratory now has the capability to scan film images, process the images, and output the images in a variety of forms. Future plans also include electronic capture capability. The current forms of image processing available include sharpening, noise reduction, dust removal, tone correction, color balancing, image editing, cropping, electronic separations, and halftoning. Output choices include customer specified electronic file formats which can be output on magnetic or optical disks or over the network, 4400 line photographic quality prints and transparencies to 8.5 by 11 inches, and 8000 line film negatives and transparencies to 4 by 5 inches. The problem of integrated imaging involves a number of branches at LaRC including Visual Imaging, Research Printing and Publishing, Data Visualization and Animation, Advanced Computing, and various research groups. These units must work together to develop common approaches to image

  17. Electronic photography at NASA Langley Research Center

    NASA Technical Reports Server (NTRS)

    Holm, Jack M.

    1994-01-01

    The field of photography began a metamorphosis several years ago which promises to fundamentally change how images are captured, transmitted, and output. At this time the metamorphosis is still in the early stages, but already new processes, hardware, and software are allowing many individuals and organizations to explore the entry of imaging into the information revolution. Exploration at this time is prerequisite to leading expertise in the future, and a number of branches at LaRC have ventured into electronic and digital imaging. Their progress until recently has been limited by two factors: the lack of an integrated approach and the lack of an electronic photographic capability. The purpose of the research conducted was to address these two items. In some respects, the lack of electronic photographs has prevented application of an integrated imaging approach. Since everything could not be electronic, the tendency was to work with hard copy. Over the summer, the Photographics Section has set up an Electronic Photography Laboratory. This laboratory now has the capability to scan film images, process the images, and output the images in a variety of forms. Future plans also include electronic capture capability. The current forms of image processing available include sharpening, noise reduction, dust removal, tone correction, color balancing, image editing, cropping, electronic separations, and halftoning. Output choices include customer specified electronic file formats which can be output on magnetic or optical disks or over the network, 4400 line photographic quality prints and transparencies to 8.5 by 11 inches, and 8000 line film negatives and transparencies to 4 by 5 inches. The problem of integrated imaging involves a number of branches at LaRC including Visual Imaging, Research Printing and Publishing, Data Visualization and Animation, Advanced Computing, and various research groups. These units must work together to develop common approaches to image

  18. Dental Implant Systems

    PubMed Central

    Oshida, Yoshiki; Tuna, Elif B.; Aktören, Oya; Gençay, Koray

    2010-01-01

    Among various dental materials and their successful applications, a dental implant is a good example of the integrated system of science and technology involved in multiple disciplines including surface chemistry and physics, biomechanics, from macro-scale to nano-scale manufacturing technologies and surface engineering. As many other dental materials and devices, there are crucial requirements taken upon on dental implants systems, since surface of dental implants is directly in contact with vital hard/soft tissue and is subjected to chemical as well as mechanical bio-environments. Such requirements should, at least, include biological compatibility, mechanical compatibility, and morphological compatibility to surrounding vital tissues. In this review, based on carefully selected about 500 published articles, these requirements plus MRI compatibility are firstly reviewed, followed by surface texturing methods in details. Normally dental implants are placed to lost tooth/teeth location(s) in adult patients whose skeleton and bony growth have already completed. However, there are some controversial issues for placing dental implants in growing patients. This point has been, in most of dental articles, overlooked. This review, therefore, throws a deliberate sight on this point. Concluding this review, we are proposing a novel implant system that integrates materials science and up-dated surface technology to improve dental implant systems exhibiting bio- and mechano-functionalities. PMID:20480036

  19. [True color accuracy in digital forensic photography].

    PubMed

    Ramsthaler, Frank; Birngruber, Christoph G; Kröll, Ann-Katrin; Kettner, Mattias; Verhoff, Marcel A

    2016-01-01

    Forensic photographs not only need to be unaltered and authentic and capture context-relevant images, along with certain minimum requirements for image sharpness and information density, but color accuracy also plays an important role, for instance, in the assessment of injuries or taphonomic stages, or in the identification and evaluation of traces from photos. The perception of color not only varies subjectively from person to person, but as a discrete property of an image, color in digital photos is also to a considerable extent influenced by technical factors such as lighting, acquisition settings, camera, and output medium (print, monitor). For these reasons, consistent color accuracy has so far been limited in digital photography. Because images usually contain a wealth of color information, especially for complex or composite colors or shades of color, and the wavelength-dependent sensitivity to factors such as light and shadow may vary between cameras, the usefulness of issuing general recommendations for camera capture settings is limited. Our results indicate that true image colors can best and most realistically be captured with the SpyderCheckr technical calibration tool for digital cameras tested in this study. Apart from aspects such as the simplicity and quickness of the calibration procedure, a further advantage of the tool is that the results are independent of the camera used and can also be used for the color management of output devices such as monitors and printers. The SpyderCheckr color-code patches allow true colors to be captured more realistically than with a manual white balance tool or an automatic flash. We therefore recommend that the use of a color management tool should be considered for the acquisition of all images that demand high true color accuracy (in particular in the setting of injury documentation). PMID:27386623

  20. Nightscape Photography Reclaims the Natural Sky

    NASA Astrophysics Data System (ADS)

    Tafreshi, Babak

    2015-08-01

    Nightscape photos and timelapse videos, where the Earth & sky are framed together with an astronomical purpose, support the dark skies activities by improving public awareness. TWAN or The World at Night program (www.twanight.org) presents the world's best collection of such landscape astrophotos and aims to introduce the night sky as a part of nature, an essential element of our living environment besides being the astronomers lab. The nightscape images also present views of our civilizations landmarks, both natural and historic sites, against the night-time backdrop of stars, planets, and celestial events. In this context TWAN is a bridge between art, science and culture.TWAN images contribute to programs such as the Dark Sky Parks by the International Dark Sky Association or Starlight reserves by assisting local efforts in better illustrating their dark skies and by producing stunning images that not only educate the local people on their night sky heritage also communicate with the governments that are responsible to support the dark sky area.Since 2009 TWAN organizes the world's largest annual photo contest on nightscape imaging, in collaboration with the Dark Skies Awareness, National Optical Astronomy Observatory, and Astronomers Without Borders. The International Earth & Sky Photo Contest promotes the photography that documents the beauty of natural skies against the problem of light pollution. In 2014 the entries received from about 50 countries and the contest result news was widely published in the most popular sources internationally.*Babak A. Tafreshi is a photographer and science communicator. He is the creator of The World At Night program, and a contributing photographer to the National Geographic, Sky&Telescope magazine, and the European Southern Observatory. http://twanight.org/tafreshi

  1. Bereavement Photography for Children: Program Development and Healthcare Professionals’ Response

    PubMed Central

    Michelson, Kelly Nicole; Blehart, Kathleen; Hochberg, Todd; James, Kristin; Frader, Joel

    2013-01-01

    Reports of in-hospital bereavement photography focus largely on stillborns and neonates. Empiric data regarding the implementation of bereavement photography in pediatrics beyond the neonatal period and the impact of such programs on healthcare professionals (HCPs) is lacking. We describe the implementation of a pediatric intensive care unit (PICU) bereavement photography program and use questionnaire data from HCPs to describe HCPs’ reflections on the program and to identify program barriers. From July, 2007 through April, 2010 families of 59 (36%) of the 164 patients who died in the PICU participated in our bereavement photography program. Forty questionnaires from 29 HCPs caring for 39 participating patients/families indicated that families seemed grateful for the service (n=34, 85%) and that the program helped HCPs feel better about their role (n=30, 70%). Many HCPs disagreed that the program consumed too much of his/her time (n=34, 85%) and that the photographer made his/her job difficult (n=37, 92.5%). Qualitative analysis of responses to open ended questions revealed four categories: the program’s general value; positive aspects of the program; negative aspects of the program; and suggestions for improvements. Implementing bereavement photography in the PICU is feasible though some barriers exist. HCPs may benefit from such programs. PMID:24520925

  2. The Art and Science of Photography in Hand Surgery

    PubMed Central

    Wang, Keming; Kowalski, Evan J.; Chung, Kevin C.

    2013-01-01

    High-quality medical photography plays an important role in teaching and demonstrating the functional capacity of the hands, as well as in medicolegal documentation. Obtaining standardized, high-quality photographs is now an essential component of many surgery practices. The importance of standardized photography in facial and cosmetic surgery has been well documented in previous studies, but no studies have thoroughly addressed the details of photography for hand surgery. In this paper, we will provide a set of guidelines and basic camera concepts for different scenarios to help hand surgeons obtain appropriate and informative high quality photographs. A camera used for medical photography should come equipped with a large sensor size and an optical zoom lens with a focal length ranging anywhere from 14-75mm. In a clinic or office setting, we recommend six standardized views of the hand and four views for the wrist, and additional views should be taken for tendon ruptures, nerve injuries, or other deformities of the hand. For intra-operative pictures, the camera operator should understand the procedure and pertinent anatomy in order to properly obtain high-quality photographs. When digital radiographs are not available, and radiographic film must be photographed, it is recommended to reduce the exposure and change the color mode to black and white to obtain the best possible pictures. The goal of medical photography is to present the subject in an accurate and precise fashion. PMID:23755927

  3. Education About Dental Hygienists' Roles in Public Dental Prevention Programs: Dental and Dental Hygiene Students' and Faculty Members' and Dental Hygienists' Perspectives.

    PubMed

    Pervez, Anushey; Kinney, Janet S; Gwozdek, Anne; Farrell, Christine M; Inglehart, Marita R

    2016-09-01

    In 2005, Public Act No. 161 (PA 161) was passed in Michigan, allowing dental hygienists to practice in approved public dental prevention programs to provide services for underserved populations while utilizing a collaborative agreement with a supervising dentist. The aims of this study were to assess how well dental and dental hygiene students and faculty members and practicing dental hygienists have been educated about PA 161, what attitudes and knowledge about the act they have, and how interested they are in additional education about it. University of Michigan dental and dental hygiene students and faculty members, students in other Michigan dental hygiene programs, and dental hygienists in the state were surveyed. Respondents (response rate) were 160 dental students (50%), 63 dental hygiene students (82%), 30 dental faculty members (26%), and 12 dental hygiene faculty members (52%) at the University of Michigan; 143 dental hygiene students in other programs (20%); and 95 members of the Michigan Dental Hygienists' Association (10%). The results showed that the dental students were less educated about PA 161 than the dental hygiene students, and the dental faculty members were less informed than the dental hygiene faculty members and dental hygienists. Responding dental hygiene faculty members and dental hygienists had more positive attitudes about PA 161 than did the students and dental faculty members. Most of the dental hygiene faculty members and dental hygienists knew a person providing services in a PA 161 program. Most dental hygiene students, faculty members, and dental hygienists wanted more education about PA 161. Overall, the better educated about the program the respondents were, the more positive their attitudes, and the more interested they were in learning more. PMID:27587574

  4. 78 FR 40544 - Culturally Significant Objects Imported for Exhibition Determinations: “New Photography 2013...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-05

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF STATE Culturally Significant Objects Imported for Exhibition Determinations: ``New Photography 2013: Adam Broomberg..., 2003), I hereby determine that the objects to be included in the exhibition ``New Photography...

  5. Digital data from shuttle photography: The effects of platform variables

    NASA Technical Reports Server (NTRS)

    Davis, Bruce E.

    1987-01-01

    Two major criticisms of using Shuttle hand held photography as an Earth science sensor are that it is nondigital, nonquantitative and that it has inconsistent platform characteristics, e.g., variable look angles, especially as compared to remote sensing satellites such as LANDSAT and SPOT. However, these criticisms are assumptions and have not been systematically investigated. The spectral effects of off-nadir views of hand held photography from the Shuttle and their role in interpretation of lava flow morphology on the island of Hawaii are studied. Digitization of photography at JSC and use of LIPS image analysis software in obtaining data is discussed. Preliminary interpretative results of one flow are given. Most of the time was spent in developing procedures and overcoming equipment problems. Preliminary data are satisfactory for detailed analysis.

  6. Determining density of maize canopy. 1: Digitized photography

    NASA Technical Reports Server (NTRS)

    Stoner, E. R.; Baumgardner, M. F.; Swain, P. H.

    1972-01-01

    The relationship between different densities of maize (Zea mays L.) canopies and the energy reflected by these canopies was studied. Field plots were laid out, representing four growth stages of maize, on a dark soil and on a very light colored surface soil. Spectral and spatial data were obtained from color and color infrared photography taken from a vertical distance of 10 m above the maize canopies. Estimates of ground cover were related to field measurements of leaf area index. Ground cover was predicted from leaf area index measurements by a second order equation. Color infrared photography proved helpful in determining the density of maize canopy on dark soils. Color photography was useful for determining canopy density on light colored soils. The near infrared dye layer is the most valuable in canopy density determinations.

  7. Evaluation of Dental Shade Guide Variability Using Cross-Polarized Photography.

    PubMed

    Gurrea, Jon; Gurrea, Marta; Bruguera, August; Sampaio, Camila S; Janal, Malvin; Bonfante, Estevam; Coelho, Paulo G; Hirata, Ronaldo

    2016-01-01

    This study evaluated color variability in the A hue between the VITA Classical (VITA Zahnfabrik) shade guide and four other VITA-coded ceramic shade guides using a Canon EOS 60D camera and software (Photoshop CC, Adobe). A total of 125 photographs were taken, 5 per shade tab for each of 5 shades (A1 to A4) from the following shade guides: VITA Classical (control), IPS e.max Ceram (Ivoclar Vivadent), IPS d.SIGN (Ivoclar Vivadent), Initial ZI (GC), and Creation CC (Creation Willi Geller). Photos were processed with Adobe Photoshop CC to allow standardized evaluation of hue, chroma, and value between shade tabs. None of the VITA-coded shade tabs fully matched the VITA Classical shade tab for hue, chroma, or value. The VITA-coded shade guides evaluated herein showed an overall unmatched shade in all tabs when compared with the control, suggesting that shade selection should be made using the guide produced by the manufacturer of the ceramic intended for the final restoration. PMID:27560681

  8. Dental Laboratory Technician.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. Center on Education and Training for Employment.

    This document, which is designed for use in developing a tech prep competency profile for the occupation of dental laboratory technician, lists technical competencies and competency builders for 13 units pertinent to the health technologies cluster in general and 8 units to the occupation of dental laboratory technician. The following skill areas…

  9. Dental Charting. Student's Manual.

    ERIC Educational Resources Information Center

    Weaver, Trudy Karlene; Apfel, Maura

    This manual is part of a series dealing with skills and information needed by students in dental assisting. The individualized student materials are suitable for classroom, laboratory, or cooperative training programs. This student manual contains four units covering the following topics: dental anatomical terminology; tooth numbering systems;…

  10. Dental Assisting Program Guide.

    ERIC Educational Resources Information Center

    Georgia Univ., Athens. Dept. of Vocational Education.

    This program guide contains the standard dental assisting curriculum for technical institutes in Georgia. The curriculum encompasses the minimum competencies required for entry-level dental assistants, and includes job skills in the technical areas of preventive dentistry; four-handed dentistry; chairside assisting with emphasis in diagnostics,…

  11. Stereophotogrammetry and relief photography in the assessment of foot disorders.

    PubMed Central

    Craxford, A D; Rutherford, A; Evans, M S; Park, C

    1981-01-01

    Expanded polyethylene foam (Plastazote) is used in the treatment of rheumatoid, diabetic, and leprotic foot disorders. This paper describes a diagnostic use for this material. Two photographic techniques combine to give vivid and quantitative representations of foot deformities which are easily applicable to clinical use. Relief photography uses illumination to create an illusion of solidity in a 2-dimensional photography. Stereophotogrammetry produces contour plots from stereopairs of photographs of the Plastazote footprint. After use the impressions are trimmed and slipped into the patient's shoes in the same way as any other foam insole. Images PMID:7469529

  12. Review of the SAFARI 2000 RC-10 Aerial Photography

    NASA Technical Reports Server (NTRS)

    Myers, Jeff; Shelton, Gary; Annegarn, Harrold; Peterson, David L. (Technical Monitor)

    2001-01-01

    This presentation will review the aerial photography collected by the NASA ER-2 aircraft during the SAFARI (Southern African Regional Science Initiative) year 2000 campaign. It will include specifications on the camera and film, and will show examples of the imagery. It will also detail the extent of coverage, and the procedures to obtain film products from the South African government. Also included will be some sample applications of aerial photography for various environmental applications, and its use in augmenting other SAFARI data sets.

  13. Inventory of native vegetation and related resources from space photography

    NASA Technical Reports Server (NTRS)

    Poulton, C. E.; Johnson, J. R.; Mouat, D. A.

    1970-01-01

    The application of space and high flight photography to vegetational resources in Arizona is discussed. Ecologically based vegetation-landform and land use maps are prepared. The use of material from the Apollo 9 flight and high flight aerial photography are discussed. Land uses that result in a conversion or strong modification of the natural vegetation are presented. The vegetation-landform units have an ecological basis and are meaningful from a land use point of view because they identify areas with unique potentials or limitations for use or development under various land uses. Examples of these relationships are given.

  14. Dental Fear Among University Employees: Implications for Dental Education.

    ERIC Educational Resources Information Center

    Kaakko, Tarja; Milgrom, Peter; Coldwell, Susan E.; Getz, Tracy; Weinstein, Philip; Ramsay, Douglas S.

    1998-01-01

    A survey of 270 University of Washington permanent employees who were potential candidates for teaching clinics, found dental anxiety prevalent, correlating with poorer perceived dental health, longer intervals between dental appointments, higher frequency of past fear behaviors, more physical symptoms during last dental injection, and more…

  15. The future dental workforce?

    PubMed

    Gallagher, J E; Wilson, N H F

    2009-02-28

    The Editor-in-Chief of the BDJ has previously raised important questions about dental workforce planning and the implications for dental graduates of recent changes and pressures. It is now time to revisit this issue. Much has changed since the last workforce review in England and Wales, and the rate of change is in all probability set to increase. First, at the time of writing this paper the momentous step of including dental care professionals (DCPs) on General Dental Council (GDC) registers in the United Kingdom has recently been completed. Second, the Scope of Practice of all dental professionals has been under consultation by the General Dental Council, and research evidence suggests that greater use should be made of skill-mix in the dental team. Third, within England, Lord Darzi has just published the 'Final Report of the NHS Next Stage Review', which emphasises 'quality care' and 'team-working' as key features of healthcare; this report was accompanied by an important document entitled 'A High Quality Workforce', in which plans for local workforce planning within the NHS are outlined, placing responsibilities at national, local and regional levels. Fourth, policy makers across the UK are wrestling with addressing oral health needs, promoting health and facilitating access to dental care, all of which have implications for the nature and shape of the dental workforce. Fifth, with the impact of globalisation and European policies we are net gainers of dentists as well as having more in training. Sixth, although there have been reviews and policy initiatives by regulatory, professional and other bodies in support of shaping the dental workforce, there has been little serious consideration of skill-mix and funding mechanisms to encourage team-working. Together, these events demand that we enter a fresh debate on the future dental workforce which should extend beyond professional and national boundaries and inform workforce planning. This debate is of great

  16. Exposing Students to Repeat Photography: Increasing Cultural Understanding on a Short-Term Study Abroad

    ERIC Educational Resources Information Center

    Lemmons, Kelly K.; Brannstrom, Christian; Hurd, Danielle

    2014-01-01

    Traditionally, repeat photography has been used to analyze land cover change. This paper describes how repeat photography may be used as a tool to enhance the short-term study abroad experience by facilitating cultural interaction and understanding. We present evidence from two cases and suggest a five-step repeat photography method for educators…

  17. Moving toward Visual Literacy: Photography as a Language of Teacher Inquiry

    ERIC Educational Resources Information Center

    Moran, Mary Jane; Tegano, Deborah W.

    2005-01-01

    This article presents one portrayal of the role of photography as a language of teacher inquiry. To inform teachers' use of photography, the first part of the article presents a brief historical perspective of photography's role in the study of human behavior in the fields of visual anthropology, visual sociology, photojournalism, and media…

  18. 15 CFR 265.42 - Photography for advertising or commercial purposes; advertising and soliciting.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 15 Commerce and Foreign Trade 1 2011-01-01 2011-01-01 false Photography for advertising or... COLLINS, COLORADO Buildings and Grounds § 265.42 Photography for advertising or commercial purposes... approval. Photography for advertising and commercial purposes may be conducted only with the...

  19. 7 CFR 500.23 - Fees for commercial photography and cinematography on grounds.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Fees for commercial photography and cinematography on... National Arboretum Facilities and Grounds § 500.23 Fees for commercial photography and cinematography on... photography or cinematography as specified in § 500.24. Facilities and grounds are available for use...

  20. Filling gaps in cultural heritage documentation by 3D photography

    NASA Astrophysics Data System (ADS)

    Schuhr, W.; Lee, J. D.

    2015-08-01

    This contribution promotes 3D photography as an important tool to obtain objective object information. Keeping mainly in mind World Heritage documentation as well as Heritage protection, it is another intention of this paper, to stimulate the interest in applications of 3D photography for professionals as well as for amateurs. In addition this is also an activity report of the international CIPA task group 3. The main part of this paper starts with "Digging the treasure of existing international 3D photography". This does not only belong to tangible but also to intangible Cultural Heritage. 3D photography clearly supports the recording, the visualization, the preservation and the restoration of architectural and archaeological objects. Therefore the use of 3D photography in C.H. should increase on an international level. The presented samples in 3D represent a voluminous, almost partly "forgotten treasure" of international archives for 3D photography. The next chapter is on "Promoting new 3D photography in Cultural Heritage". Though 3D photographs are a well-established basic photographic and photogrammetric tool, even suited to provide "near real" documentation, they are still a matter of research and improvement. Beside the use of 3D cameras even single lenses cameras are very much suited for photographic 3D documentation purposes in Cultural Heritage. Currently at the Faculty of Civil Engineering of the University of Applied Sciences Magdeburg-Stendal, low altitude aerial photography is exposed from a maximum height of 13m, using a hand hold carbon telescope rod. The use of this "huge selfie stick" is also an (international) recommendation, to expose high resolution 3D photography of monuments under expedition conditions. In addition to the carbon rod recently a captive balloon and a hexacopter UAV- platform is in use, mainly to take better synoptically (extremely low altitude, ground truth) aerial photography. Additional experiments with respect to "easy

  1. Health Instruction Packages: Permanent Teeth, Dental Deposits, and Dental Instruments. Dientes Permanentes, Depositos Dentales y Instrumentos Dentales.

    ERIC Educational Resources Information Center

    Lind, Patricia; Germano, Catherine

    These five learning modules use text interspersed with illustrations and reinforcement exercises to instruct dental aide and dental hygiene students about jaw bones and gums, dental deposits, and dental instruments. The first four modules were prepared by Patricia Lind in both Spanish and English. "The Gum and Bone of Permanent Teeth" ("La Encia y…

  2. Re-Picturing Photography: A Language in the Making

    ERIC Educational Resources Information Center

    Navab, Aphrodite Desiree

    2001-01-01

    For over one hundred and fifty years practitioners, critics, and historians have continuously challenged and added dimensions to the meaning and uses of photography. Yet there has been little challenge to its highly disturbing linguistic conventions. By uncritically accepting and using these conventions, those involved in the culture of…

  3. 41. PHOTOGRAPHY OF BLUE PRINT (MINNEAPOLIS CITY ENGINEER) END AND ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    41. PHOTOGRAPHY OF BLUE PRINT (MINNEAPOLIS CITY ENGINEER) END AND CENTRE CASTING OF CAST STEEL, MASONRY CASTING OF CAST IRON CASTING, FOR MINNEAPOLIS STEEL ARCH (4 x 5 negative) - Steel Arch Bridge, Hennepin Avenue spanning west channel of Mississippi River, Minneapolis, Hennepin County, MN

  4. Participatory Photography: Can It Help Adult Learners Develop Agency?

    ERIC Educational Resources Information Center

    Yang, Kyung-Hwa

    2014-01-01

    This article draws on a participatory photography project conducted with 10 socioeconomically disadvantaged adult learners for six weeks within the framework of production pedagogy. Throughout the project, the participants took photographs about their lives in response to three prompts that I gave: (1) take photographs of people that are important…

  5. Estimation of Laminar Burning Velocities by Direct Digital Photography

    ERIC Educational Resources Information Center

    Uske, J.; Barat, R.

    2004-01-01

    The Bunsen burner flame, which is the most common flame in the laboratory, can be easily studied for its dynamics because of modern, economical digital technology available to student laboratories. Direct digital photography of Bunsen flames is used to obtain laminar burning velocities of selected gaseous hydrocarbon/air flames.

  6. A Practical System of Photography for Genealogists and Historians.

    ERIC Educational Resources Information Center

    Tate, George F.

    The purpose of this report is to describe the KISS (Keep It Sweet and Simple) system of photography for accurately and rapidly copying genealogical and historical records on 35mm film, developing the same and using the resulting negative roll in a regular microfilm reader for immediate viewing. The basic requirement of the system is that it be…

  7. 43. PHOTOGRAPHY OF ORIGINAL PLAN (HENNEPIN COUNTY DEPARTMENT OF TRANSPORTATION) ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    43. PHOTOGRAPHY OF ORIGINAL PLAN (HENNEPIN COUNTY DEPARTMENT OF TRANSPORTATION) 5' I-BEAM-LOK OPEN (TR TYPE) FLOORING PLAN, REFLOORING HENNEPIN AVENUE BRIDGE (4 x 5 negative) - Steel Arch Bridge, Hennepin Avenue spanning west channel of Mississippi River, Minneapolis, Hennepin County, MN

  8. Eye on Health: Giving Students a Voice through Photography

    ERIC Educational Resources Information Center

    Rhoads, Misty; Phillips, Kathy

    2011-01-01

    The purpose of this activity is to provide an opportunity for students to explore and share their view of the six domains of health through the use of photography and personal interpretive analysis. After reviewing the domains of health and receiving in-class instructions, students are given two weeks to collect photos in their environments that…

  9. Photography of photograph (original print located at Engineering Management Building, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    Photography of photograph (original print located at Engineering Management Building, Naval Shipyard, Long Beach). U.S. Naval Air Station San Pedro Photograph, May 7, 1945, Photograph #9374. NET PIER, FACING NORTHEAST - Roosevelt Base, Net Pier, Corner of Richardson Avenue & Idaho Street, Long Beach, Los Angeles County, CA

  10. The Ground They Walk on: Photography and Narrative Inquiry

    ERIC Educational Resources Information Center

    Ketelle, Diane

    2010-01-01

    In this project, the author explores a novel variation on an established social science research method, photo-elicitation. The author photographed eight school principals during a two-year period and asked the principals to respond to the photographs by writing narratives below each. The author uses photography, reflections, and her own memories…

  11. 75 FR 3862 - Photography in Public Exhibit Space

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-25

    ..., 2009, NARA published a proposed rule in the Federal Register (74 FR 38153) for a 60-day public comment... RECORDS ADMINISTRATION 36 CFR Part 1280 RIN 3095-AB60 Photography in Public Exhibit Space AGENCY: National... 2003, NARA completed a two year renovation of the Rotunda and constructed additional exhibit space...

  12. Operation Ivy. Report to the Scientific Director. Documentary photography

    SciTech Connect

    Gaylord, J.L.

    1985-09-01

    The objective of Task Unit 9 was to record on film, both still and motion picture, the activities connected with certain events and programs of Operation Ivy. Task Unit 9 accomplished all the necessary field photography and was still in the process of editing this footage to form a completed motion-picture record at the time this report was written.

  13. Use of archive aerial photography for monitoring black mangrove populations

    Technology Transfer Automated Retrieval System (TEKTRAN)

    A study was conducted on the south Texas Gulf Coast to evaluate archive aerial color-infrared (CIR) photography combined with supervised image analysis techniques to quantify changes in black mangrove [Avicennia germinans (L.) L.] populations over a 26-year period. Archive CIR film from two study si...

  14. Basic Photography; A Primer for Professionals. Second Edition.

    ERIC Educational Resources Information Center

    Langford, Michael J.

    In this textbook, which was written for the professional photography student, both photographic theory and practice are thoroughly explained. The author examines the principles of light and the properties of lenses and gives a detailed evaluation of camera movement, camera shutters, and the camera as a whole. He outlines the manufacture and…

  15. Commercial Photography. Project Report Phase I with Research Findings.

    ERIC Educational Resources Information Center

    Brown, Ted; Sappe', Hoyt

    This report provides results of Phase I of a project that researched the occupational area of commercial photography, established appropriate committees, and conducted task verification. These results are intended to guide development of a program designed to train photographic technicians. Section 1 contains general information: purpose of Phase…

  16. Use of Photography as a Qualitative Evaluation Technique.

    ERIC Educational Resources Information Center

    Fang, Wei Li

    The purpose of this study is to explore the potential uses of photography and its practical implications as a qualitative evaluation technique. Potential uses are proposed: (1) systematic recording of a program activity; (2) highlighting specific events; (3) illustrating a point; (4) leading the evaluator to specific persons, activities, and…

  17. Graphic Communications--Commercial Photography. Ohio's Competency Analysis Profile.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. Vocational Instructional Materials Lab.

    This Ohio Competency Analysis Profile (OCAP), derived from a modified Developing a Curriculum (DACUM) process, is a current comprehensive and verified employer competency program list for graphic communications--commercial photography. Each unit (with or without subunits) contains competencies and competency builders that identify the…

  18. 77 FR 2037 - Marine Mammals; Photography Permit File No. 17032

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-13

    ... for a permit to conduct commercial or educational photography on killer (Orcinus orca) and gray... (50 CFR part 216). The applicant is requesting a five-year permit to film gray and killer whales in... side of Unimak Island, Alaska. The purpose of the project is to document killer whales hunting...

  19. High speed photography and photonics applications: An underutilized technology

    SciTech Connect

    Paisley, D.L.

    1996-10-01

    Snapshot: Paisley describes the development of high-speed photography including the role of streak cameras, fiber optics, and lasers. Progress in this field has created a powerful tool for viewing such ultrafast processes as hypersonic events and ballistics. {copyright} {ital 1996 Optical Society of America.} [1047-6938-96-10-9939-04

  20. 7 CFR 611.21 - Availability of aerial photography.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 7 Agriculture 6 2013-01-01 2013-01-01 false Availability of aerial photography. 611.21 Section 611.21 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SOIL SURVEYS Cartographic...

  1. 7 CFR 611.21 - Availability of aerial photography.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 7 Agriculture 6 2011-01-01 2011-01-01 false Availability of aerial photography. 611.21 Section 611.21 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SOIL SURVEYS Cartographic...

  2. 7 CFR 611.21 - Availability of aerial photography.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 6 2014-01-01 2014-01-01 false Availability of aerial photography. 611.21 Section 611.21 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SOIL SURVEYS Cartographic...

  3. 7 CFR 611.21 - Availability of aerial photography.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Availability of aerial photography. 611.21 Section 611.21 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SOIL SURVEYS Cartographic...

  4. 7 CFR 611.21 - Availability of aerial photography.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 7 Agriculture 6 2012-01-01 2012-01-01 false Availability of aerial photography. 611.21 Section 611.21 Agriculture Regulations of the Department of Agriculture (Continued) NATURAL RESOURCES CONSERVATION SERVICE, DEPARTMENT OF AGRICULTURE CONSERVATION OPERATIONS SOIL SURVEYS Cartographic...

  5. Faces and Photography in 19th-Century Visual Science.

    PubMed

    Wade, Nicholas J

    2016-09-01

    Reading faces for identity, character, and expression is as old as humanity but representing these states is relatively recent. From the 16th century, physiognomists classified character in terms of both facial form and represented the types graphically. Darwin distinguished between physiognomy (which concerned static features reflecting character) and expression (which was dynamic and reflected emotions). Artists represented personality, pleasure, and pain in their paintings and drawings, but the scientific study of faces was revolutionized by photography in the 19th century. Rather than relying on artistic abstractions of fleeting facial expressions, scientists photographed what the eye could not discriminate. Photography was applied first to stereoscopic portraiture (by Wheatstone) then to the study of facial expressions (by Duchenne) and to identity (by Galton and Bertillon). Photography opened new methods for investigating face perception, most markedly with Galton's composites derived from combining aligned photographs of many sitters. In the same decade (1870s), Kühne took the process of photography as a model for the chemical action of light in the retina. These developments and their developers are described and fixed in time, but the ideas they initiated have proved impossible to stop. PMID:27146124

  6. SMILE: Using Photography To Enhance Reading/Writing Instruction.

    ERIC Educational Resources Information Center

    Stratton, Beverly D.; Grindler, Martha C.

    The Apple/Polaroid Language Experience Approach is an extension of the language experience approach which combines photography (a form of communication) and word processing skills. It is considered a holistic approach because it is based on the whole language model of teaching literacy which develops reading skills naturally through the…

  7. Kite Aerial Photography (KAP) as a Tool for Field Teaching

    ERIC Educational Resources Information Center

    Sander, Lasse

    2014-01-01

    Kite aerial photography (KAP) is proposed as a creative tool for geography field teaching and as a medium to approach the complexity of readily available geodata. The method can be integrated as field experiment, surveying technique or group activity. The acquired aerial images can instantaneously be integrated in geographic information systems…

  8. A Spreadsheet-based GIS tool for planning aerial photography

    EPA Science Inventory

    The U.S.EPA's Pacific Coastal Ecology Branch has developed a tool which facilitates planning aerial photography missions. This tool is an Excel spreadsheet which accepts various input parameters such as desired photo-scale and boundary coordinates of the study area and compiles ...

  9. The forensic science use of reflective ultraviolet photography.

    PubMed

    Krauss, T C; Warlen, S C

    1985-01-01

    Reflective ultraviolet photography has many forensic science applications particularly in child abuse, rape, homicide, and bite mark cases. The potential of this relatively simple and inexpensive procedure has not been fully explored. The procedure for its use in bite mark cases is presented. PMID:3981118

  10. Planetary Research Center. [astronomical photography of planetary surfaces and atmospheres

    NASA Technical Reports Server (NTRS)

    Baum, W. A.; Millis, R. L.; Bowell, E. L. G.

    1974-01-01

    Extensive Earth-based photography of Mars, Jupiter, and Venus is presented which monitors the atmospheric and/or surface changes that take place day to day. Color pictures are included of the 1973 dust storm on Mars, showing the daily cycle of the storm's regeneration. Martian topography, and the progress of the storm is examined. Areas most affected by the storm are summarized.

  11. Conservation Photography as Environmental Education: Focus on the Pedagogues

    ERIC Educational Resources Information Center

    Farnsworth, Bruce Evan

    2011-01-01

    This research examines the genre of conservation photography as a legitimate and highly relevant pedagogical enterprise well poised amid the proliferation of digital media and environmental crises. This small-scale qualitative study closely follows the work of four professional photojournalists. This research asserts that the professional…

  12. Photography Education in a Web 2.0 Classroom

    ERIC Educational Resources Information Center

    Myers, Erik

    2009-01-01

    As a novice teacher, the author was confident in his ability to teach digital photography but didn't initially realize the extent to which blogs, wikis, and social networks could reshape and enhance how students learn, and how, by incorporating these tools into his curriculum, he would ultimately find ways to use Web 2.0 tools to truly engage and…

  13. Quantitative photography of intermittency in surface wave turbulence

    SciTech Connect

    Wright, W.; Budakian, R.; Putterman, S.J.

    1997-12-31

    At high amplitudes of excitation surface waves on water distribute their energy according to a Kolmogorov type of turbulent power spectrum. We have used diffusing light photography to measure the power spectrum and to quantify the presence of large structures in the turbulent state.

  14. Digital Astronaut Photography: A Discovery Dataset for Archaeology

    NASA Technical Reports Server (NTRS)

    Stefanov, William L.

    2010-01-01

    Astronaut photography acquired from the International Space Station (ISS) using commercial off-the-shelf cameras offers a freely-accessible source for high to very high resolution (4-20 m/pixel) visible-wavelength digital data of Earth. Since ISS Expedition 1 in 2000, over 373,000 images of the Earth-Moon system (including land surface, ocean, atmospheric, and lunar images) have been added to the Gateway to Astronaut Photography of Earth online database (http://eol.jsc.nasa.gov ). Handheld astronaut photographs vary in look angle, time of acquisition, solar illumination, and spatial resolution. These attributes of digital astronaut photography result from a unique combination of ISS orbital dynamics, mission operations, camera systems, and the individual skills of the astronaut. The variable nature of astronaut photography makes the dataset uniquely useful for archaeological applications in comparison with more traditional nadir-viewing multispectral datasets acquired from unmanned orbital platforms. For example, surface features such as trenches, walls, ruins, urban patterns, and vegetation clearing and regrowth patterns may be accentuated by low sun angles and oblique viewing conditions (Fig. 1). High spatial resolution digital astronaut photographs can also be used with sophisticated land cover classification and spatial analysis approaches like Object Based Image Analysis, increasing the potential for use in archaeological characterization of landscapes and specific sites.

  15. User services available from USDA'S aerial photography field office

    NASA Technical Reports Server (NTRS)

    Dickson, R. A.

    1975-01-01

    APFO furnishes LANDSAT imagery and supporting NASA aircraft imagery to NASA-funded principal investigators who are working within the agriculture discipline. The office holds and reproduces Skylab imagery and a variety of aircraft photography (including infrared) from various government agencies. Available products are listed. Other topics discussed include quality control of photographic materials, analytical aerotriangulation, and photographic processes.

  16. Photography and Writing: Alternative Ways of Learning for ESL Students

    ERIC Educational Resources Information Center

    Friesen, Helen Lepp

    2012-01-01

    To writing, painting, drawing, and photography as artistic media, the author would like to add teaching as a creative endeavor as well. Especially in a classroom where English is not the first language for many students, the writing teacher needs to be creative with assignments and activities that address nontraditional ways of learning. Her…

  17. Drawing on Dynamic Local Knowledge through Student-Generated Photography

    ERIC Educational Resources Information Center

    Coles-Ritchie, Marilee; Monson, Bayley; Moses, Catherine

    2015-01-01

    In this research, the authors explored how teachers using student-generated photography draw on local knowledge. The study draws on the framework of funds of knowledge to highlight the assets marginalized students bring to the classroom and the need for culturally relevant pedagogy to address the needs of a diverse public school population. The…

  18. Encouraging Creativity in Mathematics and Science through Photography

    ERIC Educational Resources Information Center

    Munakata, Mika; Vaidya, Ashwin

    2012-01-01

    Based on the results of a survey of the science and mathematics students at our university, we observed that students do not consider mathematics and science to be creative endeavors, though the traditional artistic disciplines rank high in this regard. To address this problem in perception, the authors used photography as a means to encourage…

  19. Pupil Mortification: Digital Photography and Identity Construction in Classroom Assessment

    ERIC Educational Resources Information Center

    Crossouard, Barbara

    2012-01-01

    Cultural theorists have illuminated how photographic images contribute to autobiographical remembering and identity formation. This has new significance given that digital photography now allows personal images to circulate rapidly amongst peer groups. Taking these insights into classroom contexts, this paper draws on recent case-study data to…

  20. Picture Science: Using Digital Photography to Teach Young Children

    ERIC Educational Resources Information Center

    Neumann-Hinds, Carla

    2007-01-01

    Young children love to investigate the natural world, and they love to take photographs. "Picture Science" goes beyond just documenting class projects. The book shows how to use digital photography to make each step in the scientific process--from posing a question, to gathering data, to showing findings--concrete and fun for children. Keyed…

  1. Cross Cultural Images: The ETSU/NAU Special Photography Project.

    ERIC Educational Resources Information Center

    Montgomery, Donna; Sluss, Dorothy; Lewis, Jamie; Vervelde, Peggy; Prater, Greg; Minner, Sam

    Recreation is a significant part of a full and rich life but is frequently overlooked in relation to handicapped children. A project called Cross-Cultural Images aimed to improve the quality of life for handicapped children by teaching them avocational photography skills. The project involved mildly handicapped children aged 7-11 in Appalachia, on…

  2. Teaching Photography: An Interdisciplinary Theme for Science, Technology, and Art.

    ERIC Educational Resources Information Center

    Stamovlasis, Dimitrios

    This paper addresses contemporary concerns with the disintegration of meaning and fragmentation of knowledge. It appeals to interdisciplinary curricula, where an effort is made to reveal the interactive relationships among different fields of knowledge. The paper proposes Photography as an interdisciplinary theme, which involves Chemistry,…

  3. Advances in dental materials.

    PubMed

    Vaderhobli, Ram M

    2011-07-01

    The use of materials to rehabilitate tooth structures is constantly changing. Over the past decade, newer material processing techniques and technologies have significantly improved the dependability and predictability of dental material for clinicians. The greatest obstacle, however, is in choosing the right combination for continued success. Finding predictable approaches for successful restorative procedures has been the goal of clinical and material scientists. This article provides a broad perspective on the advances made in various classes of dental restorative materials in terms of their functionality with respect to pit and fissure sealants, glass ionomers, and dental composites. PMID:21726695

  4. The Reel Thing. Creative Photography. Art Education: Art Cft 7 6681.01, CM Art 1 6693.01.

    ERIC Educational Resources Information Center

    Farnsworth, William; Beckman, Louise

    This creative photography quinmester curriculum guide was written to enable the student to use photography in a wide range of art forms. The student will gain an understanding of how photography is used in the fields of commercial and fine art. The introduction to photography as a unique art form includes a brief history of creative and…

  5. Dental mesenchymal stem cells.

    PubMed

    Sharpe, Paul T

    2016-07-01

    Mammalian teeth harbour mesenchymal stem cells (MSCs), which contribute to tooth growth and repair. These dental MSCs possess many in vitro features of bone marrow-derived MSCs, including clonogenicity, expression of certain markers, and following stimulation, differentiation into cells that have the characteristics of osteoblasts, chondrocytes and adipocytes. Teeth and their support tissues provide not only an easily accessible source of MSCs but also a tractable model system to study their function and properties in vivo In addition, the accessibility of teeth together with their clinical relevance provides a valuable opportunity to test stem cell-based treatments for dental disorders. This Review outlines some recent discoveries in dental MSC function and behaviour and discusses how these and other advances are paving the way for the development of new biologically based dental therapies. PMID:27381225

  6. Glossary of Dental Terms

    MedlinePlus

    ... geta poker friv Home InfoBites Find an AGD Dentist Your Family's Oral Health About the AGD Dental ... and shape of teeth performed by a general dentist | More Edentulous having lost most or all of ...

  7. American Dental Association

    MedlinePlus

    ... Oral Health Topics ADVERTISEMENT Advocacy Advocacy Advocacy Issues Health Care Reform ADA Positions, Policies and Statements Legal Advocacy and ... Children's Dental Health Month ADA Seal of Acceptance Fluoride in Water Advocating for the Public Prevention Summit ...

  8. Dental care - child

    MedlinePlus

    ... dental exams, and getting necessary treatments such as fluoride, extractions, fillings, or braces and other orthodontics. ... provider if your infant needs to take oral fluoride . THE FIRST TRIP TO THE DENTIST Your child's ...

  9. Complications of dental surgery.

    PubMed

    Lillich, J D

    1998-08-01

    Both retrospective data and clinical experience indicate that complications of dental surgery are occasionally encountered and, to some extent, are inevitable. Many of the reported complications related to dental surgery such as incomplete removal of diseased teeth or removal of the wrong tooth can be avoided with sound preoperative planning and intraoperative technique. Diseased teeth should be properly identified prior to and during surgery. In addition, complete removal of the diseased tooth must be performed. Use of intraoperative radiographic examination to confirm the location of the diseased tooth and to document its removal cannot be overemphasized. Iatrogenic fracture of the maxillary or mandibular alveolar walls or palatine bone can be avoided by proper placement of the dental punch. The chances of developing incisional drainage or secondary sinusitis can be reduced by use of appropriate systemic antibiotics. These factors should guide the surgical approach to dental surgery to reduce the likelihood of developing common complications. PMID:9742671

  10. Infant dental care (image)

    MedlinePlus

    Even though newborns and infants do not have teeth, care of the mouth and gums is important. ... sugar water. As the child grows, establishing proper dental hygiene will promote healthy teeth and gums which ...

  11. Dental care - child

    MedlinePlus

    ... Cantor A, Zakher B, et al. Preventing dental caries in children <5 years: systematic review updating USPSTF ... nih.gov/pubmed/15606059 . Ng MW. Early childhood caries: risk-based disease prevention and management. Dent Clin ...

  12. Dental Care in Pregnancy

    MedlinePlus

    ... for you and your baby and contain less sugar that can damage your teeth. Water or low-fat milk hydrates you and contains little or no sugar. For More Information American Dental Association: Pregnancy http : / / ...

  13. Portable Dental System

    NASA Technical Reports Server (NTRS)

    1980-01-01

    Portable dental system provides dental care in isolated communities. System includes a patient's chair and a dentist's stool, an X-ray machine and a power unit, all of which fold into compact packages. A large yellow "pumpkin" is a collapsible compressed air tank. Portable system has been used successfully in South America in out of the way communities with this back-packable system, and in American nursing homes. This product is no longer manufactured.

  14. Dental (Odontogenic) Pain

    PubMed Central

    Renton, Tara

    2011-01-01

    This article provides a simple overview of acute trigeminal pain for the non dentist. This article does not cover oral mucosal diseases (vesiculobullous disorders) that may cause acute pain. Dental pain is the most common in this group and it can present in several different ways. Of particular interest for is that dental pain can mimic both trigeminal neuralgia and other chronic trigeminal pain disorders. It is crucial to exclude these disorders whilst managing patients with chronic trigeminal pain. PMID:26527224

  15. Saliva and dental erosion

    PubMed Central

    BUZALAF, Marília Afonso Rabelo; HANNAS, Angélicas Reis; KATO, Melissa Thiemi

    2012-01-01

    Dental erosion is a multifactorial condition. The consideration of chemical, biological and behavioral factors is fundamental for its prevention and therapy. Among the biological factors, saliva is one of the most important parameters in the protection against erosive wear. Objective This review discusses the role of salivary factors on the development of dental erosion. Material and Methods A search was undertaken on MEDLINE website for papers from 1969 to 2010. The keywords used in the research were "saliva", "acquired pellicle", "salivary flow", "salivary buffering capacity" and "dental erosion". Inclusion of studies, data extraction and quality assessment were undertaken independently and in duplicate by two members of the review team. Disagreements were solved by discussion and consensus or by a third party. Results Several characteristics and properties of saliva play an important role in dental erosion. Salivary clearance gradually eliminates the acids through swallowing and saliva presents buffering capacity causing neutralization and buffering of dietary acids. Salivary flow allows dilution of the acids. In addition, saliva is supersaturated with respect to tooth mineral, providing calcium, phosphate and fluoride necessary for remineralization after an erosive challenge. Furthermore, many proteins present in saliva and acquired pellicle play an important role in dental erosion. Conclusions Saliva is the most important biological factor affecting the progression of dental erosion. Knowledge of its components and properties involved in this protective role can drive the development of preventive measures targeting to enhance its known beneficial effects. PMID:23138733

  16. 42 CFR Appendix G to Part 75 - Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 1 2014-10-01 2014-10-01 false Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography G Appendix G to Part 75 Public Health PUBLIC HEALTH SERVICE...—Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography The following...

  17. 42 CFR Appendix G to Part 75 - Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 1 2012-10-01 2012-10-01 false Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography G Appendix G to Part 75 Public Health PUBLIC HEALTH SERVICE...—Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography The following...

  18. 42 CFR Appendix G to Part 75 - Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 1 2013-10-01 2013-10-01 false Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography G Appendix G to Part 75 Public Health PUBLIC HEALTH SERVICE...—Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography The following...

  19. 42 CFR Appendix G to Part 75 - Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography G Appendix G to Part 75 Public Health PUBLIC HEALTH SERVICE...—Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography The following...

  20. 42 CFR Appendix G to Part 75 - Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 1 2011-10-01 2011-10-01 false Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography G Appendix G to Part 75 Public Health PUBLIC HEALTH SERVICE...—Standards for Licensing Dental Hygienists and Dental Assistants in Dental Radiography The following...

  1. Dental fitness classification in the Canadian forces.

    PubMed

    Groves, Richard R

    2008-01-01

    The Canadian Forces Dental Services utilizes a dental classification system to identify those military members dentally fit for an overseas deployment where dental resources may be limited. Although the Canadian Forces Dental Services dental classification system is based on NATO standards, it differs slightly from the dental classification systems of other NATO country dental services. Data collected by dental teams on overseas deployments indicate a low rate of emergency dental visits by Canadian Forces members who were screened as dentally fit to deploy. PMID:18277717

  2. Influence of dental materials on dental MRI

    PubMed Central

    Tymofiyeva, O; Vaegler, S; Rottner, K; Boldt, J; Hopfgartner, AJ; Proff, PC; Richter, E-J; Jakob, PM

    2013-01-01

    Objectives: To investigate the potential influence of standard dental materials on dental MRI (dMRI) by estimating the magnetic susceptibility with the help of the MRI-based geometric distortion method and to classify the materials from the standpoint of dMRI. Methods: A series of standard dental materials was studied on a 1.5 T MRI system using spin echo and gradient echo pulse sequences and their magnetic susceptibility was estimated using the geometric method. Measurements on samples of dental materials were supported by in vivo examples obtained in dedicated dMRI procedures. Results: The tested materials showed a range of distortion degrees. The following materials were classified as fully compatible materials that can be present even in the tooth of interest: the resin-based sealer AH Plus® (Dentsply, Maillefer, Germany), glass ionomer cement, gutta-percha, zirconium dioxide and composites from one of the tested manufacturers. Interestingly, composites provided by the other manufacturer caused relatively strong distortions and were therefore classified as compatible I, along with amalgam, gold alloy, gold–ceramic crowns, titanium alloy and NiTi orthodontic wires. Materials, the magnetic susceptibility of which differed from that of water by more than 200 ppm, were classified as non-compatible materials that should not be present in the patient’s mouth for any dMRI applications. They included stainless steel orthodontic appliances and CoCr. Conclusions: A classification of the materials that complies with the standard grouping of materials according to their magnetic susceptibility was proposed and adopted for the purposes of dMRI. The proposed classification can serve as a guideline in future dMRI research. PMID:23610088

  3. 21 CFR 872.3100 - Dental amalgamator.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Dental amalgamator. 872.3100 Section 872.3100 Food... DEVICES DENTAL DEVICES Prosthetic Devices § 872.3100 Dental amalgamator. (a) Identification. A dental... and dental alloy particles, such as silver, tin, zinc, and copper. The mixed dental amalgam...

  4. 21 CFR 872.3100 - Dental amalgamator.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Dental amalgamator. 872.3100 Section 872.3100 Food... DEVICES DENTAL DEVICES Prosthetic Devices § 872.3100 Dental amalgamator. (a) Identification. A dental... and dental alloy particles, such as silver, tin, zinc, and copper. The mixed dental amalgam...

  5. 21 CFR 872.3100 - Dental amalgamator.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Dental amalgamator. 872.3100 Section 872.3100 Food... DEVICES DENTAL DEVICES Prosthetic Devices § 872.3100 Dental amalgamator. (a) Identification. A dental... and dental alloy particles, such as silver, tin, zinc, and copper. The mixed dental amalgam...

  6. 21 CFR 872.3100 - Dental amalgamator.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Dental amalgamator. 872.3100 Section 872.3100 Food... DEVICES DENTAL DEVICES Prosthetic Devices § 872.3100 Dental amalgamator. (a) Identification. A dental... and dental alloy particles, such as silver, tin, zinc, and copper. The mixed dental amalgam...

  7. 21 CFR 872.3100 - Dental amalgamator.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Dental amalgamator. 872.3100 Section 872.3100 Food... DEVICES DENTAL DEVICES Prosthetic Devices § 872.3100 Dental amalgamator. (a) Identification. A dental... and dental alloy particles, such as silver, tin, zinc, and copper. The mixed dental amalgam...

  8. Photography equipment and techniques. A survey of NASA developments

    NASA Technical Reports Server (NTRS)

    Derr, A. J.

    1972-01-01

    The Apollo program has been the most complex exploration ever attempted by man, requiring extensive research, development, and engineering in most of the sciences before the leap through space could begin. Photography has been used at each step of the way to document the efforts and activities, isolate mistakes, reveal new phenomena, and to record much that cannot be seen by the human eye. At the same time, the capabilities of photography were extended because of the need of meeting space requirements. The results of this work have been applied to community planning and ecology, for example, as well as to space and engineering. Special uses of standard equipment, modifications and new designs, as well as film combinations that indicate actual or potential ecological problems are described.

  9. Dental Implantology in U.S. Dental Schools.

    ERIC Educational Resources Information Center

    Bavitz, J. Bruce

    1990-01-01

    The results of a survey of 44 dental schools corroborate the belief that dental implantology is gaining widespread acceptance in U.S. dental schools. Currently, predoctoral students have limited clinical participation. Most programs have taken the position that clinical techniques are best taught within the existing specialties at a graduate…

  10. Bulimia and Anorexia Nervosa in Dental and Dental Hygiene Curricula.

    ERIC Educational Resources Information Center

    Gross, Karen B. W.; And Others

    1990-01-01

    Dentists and dental hygienists are in a unique position to identify an eating disorder patient from observed oral manifestations and to refer the patient for psychological therapy. The inclusion of information on general and oral complications of bulimia and anorexia nervosa in dental and dental hygiene curriculum was examined. (MLW)

  11. Dental practice network of U.S. dental schools.

    PubMed

    Fisher, Monica A; Beeson, Dennis C; Hans, Mark G

    2009-12-01

    As dental schools incorporate training in evidence-based dentistry (EBD) into their curricula, students must learn how to critically evaluate systematic reviews and meta-analyses. It is important that dental education in the United States support the American Dental Association's position statement on EBD, which defines "best evidence" as data obtained from all study designs. Given that much evidence is missing when EBD is derived from Cochrane Systematic Reviews' randomized clinical trials, we propose the creation of a dental practice network of U.S. dental schools. We developed an electronic clinical dentistry research database for EBD using Epi-Info (available at www.cdc.gov/epiinfo/downloads.htm). As a free, public use software, Epi-Info provides the foundation for the development of clinical research databases that can increase the research capacity through multisite studies designed to generate outcomes data on the effectiveness of dental treatment. The creation of a dental practice network of dental schools with their large number of patients would expand the research capacity for EBD practice and advance the EBD science regarding the effectiveness of dental treatment. The next step is to link clinical dental researchers/educators at multiple dental schools through a collaborative clinical research network, so that the findings can be applied to the EBD component of problem-based learning curricula of dental education. PMID:20007494

  12. Aerial Photography: Use in Detecting Simulated Insect Defoliation in Corn

    NASA Technical Reports Server (NTRS)

    Chiang, H. C.; Latham, R.; Meyer, M. P.

    1973-01-01

    Artificial defoliation in corn was used to explore the usefulness of aerial photography in detecting crop insect infestations. Defoliation on the top of plants was easily detected, while that on the base was less so. Aero infrared film with Wratten 89B filter gave the best results, and morning flights at the scale of 1:15840 are recommended. Row direction, plant growth stage, and time elapse since defoliation were not important factors.

  13. A Review Of Oculoplastic Photography: A Guide For Clinician Photographers

    PubMed Central

    Yap, Jun Fai; Wai, Yong Zheng; Ng, Qi Xiong

    2016-01-01

    Clinical photography in the field of oculoplastic surgery has many applications. It is possible for clinicians to obtain standardized clinical photographs without a studio. A clinician photographer has the advantage of knowing exactly what to photograph as well as having immediate access to the images. In order to maintain standardization in the photographs, the photographic settings should remain constant. This article covers essential photographic equipment, camera settings, patient pose, and digital asset management.

  14. Space Shuttle earth observations photography - Data listing process

    NASA Technical Reports Server (NTRS)

    Lulla, Kamlesh

    1992-01-01

    The data listing process of the electronic data base of the Catalogs of Space Shuttle Earth Observations Photography is described. Similar data are recorded for each frame in each role from the mission. At the end of each roll, a computer printout is checked for mistakes, glitches, and typographical errors. After the roll and frames have been corrected, the data listings are ready for transfer to the data base and for development of the catalog.

  15. Clinical photography in dermatology using smartphones: An overview

    PubMed Central

    Ashique, K. T.; Kaliyadan, Feroze; Aurangabadkar, Sanjeev J.

    2015-01-01

    The smartphone is one of the biggest revolutions in the era of information technology. Its built in camera offers several advantages. Dermatologists, who handle a specialty that is inherently visual, are most benefited by this handy technology. Here in this article, we attempt to provide an overview of smartphone photography in clinical dermatology in order to help the dermatologist to get the best out of the available camera for clinical imaging and storage PMID:26009708

  16. Digital computer processing of peach orchard multispectral aerial photography

    NASA Technical Reports Server (NTRS)

    Atkinson, R. J.

    1976-01-01

    Several methods of analysis using digital computers applicable to digitized multispectral aerial photography, are described, with particular application to peach orchard test sites. This effort was stimulated by the recent premature death of peach trees in the Southeastern United States. The techniques discussed are: (1) correction of intensity variations by digital filtering, (2) automatic detection and enumeration of trees in five size categories, (3) determination of unhealthy foliage by infrared reflectances, and (4) four band multispectral classification into healthy and declining categories.

  17. Erosion control and watershed management by Spacelab photography

    NASA Astrophysics Data System (ADS)

    Koelbl, O.; Depury, P.

    1985-04-01

    The interpretability of false color Spacelab photographs for erosion control and water shed management was assessed using photos taken over Nepal and the Mount Everest Massif. The thematic interpretation was done by a geologist working in this region. Scale limitations, image reproduction, and filtering of the photographs are discussed. Results show that much information can be extracted using relatively simple means. Color infrared photography must be used since panchromatic imagery does not show enough detail.

  18. Study of the detail content of Apollo orbital photography

    NASA Technical Reports Server (NTRS)

    Kinzly, R. E.

    1974-01-01

    The development and application of image evaluation methods for assessing the detail content of Apollo orbital photography was demonstrated. Edge analysis using shadow to sunlight edges interior to craters was successfully used to evaluate the fine detail content of Apollo 15, 16, and 17 imagery. A method for evaluating tone quality was developed using a gain factor as a function of object contrast and average exposure level that can be related to object detectability.

  19. Colposcopic photography of genital injury following sexual intercourse in adults.

    PubMed

    Astrup, Birgitte Schmidt; Lauritsen, Jens; Thomsen, Jørgen Lange; Ravn, Pernille

    2013-03-01

    The aim of this study was to evaluate interpretations and the reproducibility of interpretations when looking at colposcopic photographs in a forensic setting, as well as discussing some of the dilemmas and pitfalls of forensic colposcopic photography. A total of 316 colposcopic photographs from 51 women taken on three occasions following consensual sexual intercourse, and 78 colposcopic photographs from 39 rape victims, were evaluated by four different observers. Photographs were taken in the same setting, by the same group of investigators, before and after application of toluidine blue dye. The overall Kappa-value for the four observers' judgment of lesion vs. no lesion was 0.41 which can be interpreted as moderate agreement. Intra-observer agreement was calculated for two of the observers looking at photographs with a 10 months' time-gap, and the Kappa-values were 0.41 and 0.52. Positive and negative predictive values of the photographs were 82 and 81 % respectively. This study demonstrates relatively poor reliability of colposcopic photography. Some would argue that this makes colposcopic photography a low-quality method of evaluation and that forensic science should aim for higher standards because of its use in court. Others would argue that as long as the limitations of a scientific method are acknowledged then it is still eligible for use. The moderate agreement and accuracy stresses the need for quality control in the gynecological part of a rape examination. Colposcopic photography also provides a good option for supervision and teaching in an ethically difficult setting. It strengthens the legal rights for both victim and perpetrator. PMID:23247984

  20. 5. Photographic copy of historic photography. Original snapshot print is ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. Photographic copy of historic photography. Original snapshot print is in narrative reports of the Lower Souris Migratory Waterfowl Refuge for the 1930s, on file at the headquarters of the J. Clark Salyer National Wildlife Refuge, Upham, North Dakota. DREDGING CHANNEL FOR THE SOURIS RIVER FOR DRAINAGE PURPOSES IN THE EARLY 20TH CENTURY - J. Clark Salyer National Wildlife Refuge Dams, Along Lower Souris River, Kramer, Bottineau County, ND

  1. [Guide to buying a camera for dermatological photography].

    PubMed

    Barco, L; Ribera, M; Casanova, J M

    2012-01-01

    Choosing a camera for use in the dermatology office is difficult, particularly in the case of a digital camera because the market is constantly evolving. This article explains the features that should be taken into account, including camera type, sensor, lens and macro capability, aperture priority mode, screen, viewfinder, operating speed, flash, battery, memory card, and image format. The most recent advances in the field of digital photography relevant to the dermatologist are discussed. PMID:22463769

  2. Clinical photography in dermatology using smartphones: An overview.

    PubMed

    Ashique, K T; Kaliyadan, Feroze; Aurangabadkar, Sanjeev J

    2015-01-01

    The smartphone is one of the biggest revolutions in the era of information technology. Its built in camera offers several advantages. Dermatologists, who handle a specialty that is inherently visual, are most benefited by this handy technology. Here in this article, we attempt to provide an overview of smartphone photography in clinical dermatology in order to help the dermatologist to get the best out of the available camera for clinical imaging and storage. PMID:26009708

  3. Dental Health and Orthodontic Problems

    MedlinePlus

    ... Text Size Email Print Share Dental Health and Orthodontic Problems Page Content Article Body Dental Health Twin ... color can be tinted to match the teeth. Orthodontic Problems Crooked teeth, overbites and underbites are best ...

  4. Infection Control in Dental Settings

    MedlinePlus

    ... Based Dental Sealant Programs Dental Sealant FAQs Sealant Efficiency Assessment for Locals and States ... of infection control remain unchanged, new technologies, materials, equipment, and data require continuous evaluation of current ...

  5. Uses and abuses of color spaces for digital photography

    NASA Astrophysics Data System (ADS)

    Moroney, Nathan

    2004-06-01

    The range of color spaces for possible use with digital photography presents challenges and opportunities for engineers, developers and users of digital cameras. This paper will provide an overview and comparison of a sub-set of these color spaces, with specific consideration for digital photography. Primarily the RGB or red, green and blue color spaces will be compared and although other spaces, such as CIELAB and Yu"v", will be mentioned. Background will be provided with respect to key considerations for design and use of color spaces for digital photography. Data will be presented on color space uniformity using a radial sampling of the OSA Uniform Color Scales and tritanopic confusion lines. In addition, color difference statistics across a fixed sampling will be used to assess the similarity of color spaces and to quantify the resulting error when color spaces are incorrectly assigned. Finally, the gamut shapes will be compared using procrustes analysis of a set of gamut landmark colors. The resulting dendrogram provides a means of visualizing relative similarities of the gamut shapes.

  6. National aerial photography program as a geographic information system resource

    USGS Publications Warehouse

    Light, Donald L.

    1991-01-01

    The National Aerial Photography Program (NAPP) is jointly funded by Federal agencies and States that choose to participate in a 50-50 cost sharing cooperative arrangement. The NAPP is designed to acquire black-and-white (B&W) or color infrared (CIR) photography at a scale of 1:40,000. The status of NAPP flying, now going into the first year of its second 5-year cycle, is reviewed to inform the user community of NAPP's coverage. The resolution, geometric quality and flight parameters are used to estimate the system's cartographic potential to produce orthophotoquads, digital elevation models, topographic maps and digital information to meet national map accuracy standards at 1:12,000 and 1:24,000-scale and serve as a geographic information system resource. Also, a technique is presented to compute the optimum scanning spot size (15 ??m) and storage required for converting the B&W or CIR photography to digital, machine-readable pixel form. The resulting digital NAPP data are suitable for a wide variety of new applications, including use in geographic information systems.

  7. Kirlian Photography as a Teaching Tool of Physics

    NASA Astrophysics Data System (ADS)

    Terrel, Andy; Thacker, Beth Ann, , Dr.

    2002-10-01

    There are a number of groups across the country working on redesigning introductory physics courses by incorporating physics education research, modeling, and making the courses appeal to students in broader fields. We spent the summer exploring Kirlian photography, a subject that can be understood by students with a basic comprehension of electrostatics but is still questioned by many people in other fields. Kirlian photography's applications have captivated alternative medicine but still requires research from both physics and biology to understand if it has potential as medical tool. We used a simple setup to reproduce the physics that has been done to see if it could be used in an educational setting. I will demonstrate how Kirlian photography can be explained by physics but also how the topic still needs research to completely understand its possible biological applications. By incorporating such a topic into a curriculum, one is able to teach students to explore supposed supernatural phenomena scientifically and to promote research among undergraduate students.

  8. DENTAL PULP TISSUE ENGINEERING

    PubMed Central

    Demarco, FF; Conde, MCM; Cavalcanti, B; Casagrande, L; Sakai, V; Nör, JE

    2013-01-01

    Dental pulp is a highly specialized mesenchymal tissue, which have a restrict regeneration capacity due to anatomical arrangement and post-mitotic nature of odontoblastic cells. Entire pulp amputation followed by pulp-space disinfection and filling with an artificial material cause loss of a significant amount of dentin leaving as life-lasting sequelae a non-vital and weakened tooth. However, regenerative endodontics is an emerging field of modern tissue engineering that demonstrated promising results using stem cells associated with scaffolds and responsive molecules. Thereby, this article will review the most recent endeavors to regenerate pulp tissue based on tissue engineering principles and providing insightful information to readers about the different aspects enrolled in tissue engineering. Here, we speculate that the search for the ideal combination of cells, scaffolds, and morphogenic factors for dental pulp tissue engineering may be extended over future years and result in significant advances in other areas of dental and craniofacial research. The finds collected in our review showed that we are now at a stage in which engineering a complex tissue, such as the dental pulp, is no longer an unachievable and the next decade will certainly be an exciting time for dental and craniofacial research. PMID:21519641

  9. Maintaining proper dental records.

    PubMed

    Leeuw, Wilhemina

    2014-01-01

    Referred to as Standard of Care, the legal duty of a dentist requires exercising the degree of skill and care that would be exhibited by other prudent dentists faced with the same patient-care situation. Primarily, the goal of keeping good dental records is to maintain continuity of care. Diligent and complete documentation and charting procedures are essential to fulfilling the Standard of Care. Secondly, because dental records are considered legal documents they help protect the interest of the dentist and/or the patient by establishing the details of the services rendered. Patients today are better educated and more assertive than ever before and dentists must be equipped to protect themselves against malpractice claims. Every record component must be handled as if it could be summoned to a court room and scrutinized by an attorney, judge or jury. Complete, accurate, objective and honest entries in a patient record are the only way to defend against any clinical and/or legal problems that might arise. Most medical and dental malpractice claims arise from an unfavorable interaction with the dentist and not from a poor treatment outcome. By implementing the suggestions mentioned in this course, dental health care professionals can minimize the legal risks associated with the delivery of dental care to promote greater understanding for patients of their rights and privileges to their complete record. PMID:24834675

  10. Monitoring microvascular reactivity in dental subjects.

    PubMed

    Roth, G I; Matheny, J L; Gonty, A A; Paterson, R L

    1980-01-01

    to be studied are in human subjects where surgical intervention is unacceptable. For these reasons, previous studies of dimensional changes in the microcirculation, involving a variety of techniques (still photography, cinematography, television microscopy,(5) image-scanning,(6) image-shearing(7,8) and optical density measurements(9)), were almost always carried out in animals.In order to determine the effects of drugs and anesthetic gases on the peripheral microcirculation in human subjects undergoing dental treatment, we have employed a non-invasive photomicrographic method to measure planar dimensional changes in human nailfold capillaries. In this report we will describe this technique, its use in measuring microcirculatory changes in humans in a dental setting, and the results of a study undertaken to determine if it is sensitive enough to measure an induced change in vascular dimensions. PMID:6933869

  11. Dental therapists: a global perspective.

    PubMed

    Nash, David A; Friedman, Jay W; Kardos, Thomas B; Kardos, Rosemary L; Schwarz, Eli; Satur, Julie; Berg, Darren G; Nasruddin, Jaafar; Mumghamba, Elifuraha G; Davenport, Elizabeth S; Nagel, Ron

    2008-04-01

    In 1921, New Zealand began training school dental nurses, subsequently deploying them throughout the country in school-based clinics providing basic dental care for children. The concept of training dental nurses, later to be designated dental therapists, was adopted by other countries as a means of improving access to care, particularly for children. This paper profiles six countries that utilise dental therapists, with a description of the training that therapists receive in these countries, and the context in which they practice. Based on available demographic information, it also updates the number of dental therapists practising globally, as well as the countries in which they practice. In several countries, dental therapy is now being integrated with dental hygiene in training and practice to create a new type of professional complementary to a dentist. Increasingly, dental therapists are permitted to treat adults as well as children. The paper also describes the status of a current initiative to introduce dental therapy to the United States. It concludes by suggesting that dental therapists can become valued members of the dental team throughout the world, helping to improve access to care and reducing existing disparities in oral health. PMID:18478885

  12. Dental Assistant Specialist. (AFSC 98150).

    ERIC Educational Resources Information Center

    Eling, David R.

    This four-volume student text is designed for use by Air Force personnel enrolled in a self-study extension course for dental assistant specialists. Covered in the individual volumes are an introduction to dental services (the mission and organization of medical/dental service, career ladder progressions, medical readiness/wartime training, and…

  13. Dental Hygiene Realpolitik Affecting Education.

    ERIC Educational Resources Information Center

    Bader, James D.

    1991-01-01

    Current conditions in dental hygiene influencing professional education are discussed. Workplace/practice issues include dental hygiene care as a component of dental practice, content, effects, and quality of care, hygienist supply and demand, and job satisfaction. Professional issues include the knowledge base, definitions of practice, and…

  14. Dental Laboratory Technology Program Standards.

    ERIC Educational Resources Information Center

    Georgia Univ., Athens. Dept. of Vocational Education.

    This guide contains 45 program standards for the dental laboratory technology program conducted in technical institutes in Georgia. The dental laboratory technology program, either diploma or associate degree, is designed to ensure that students gain basic competence in the job skills needed for an entry-level employee in dental laboratory…

  15. Validation of Smartphone Based Retinal Photography for Diabetic Retinopathy Screening

    PubMed Central

    Rajalakshmi, Ramachandran; Arulmalar, Subramanian; Usha, Manoharan; Prathiba, Vijayaraghavan; Kareemuddin, Khaji Syed; Anjana, Ranjit Mohan; Mohan, Viswanathan

    2015-01-01

    Aim To evaluate the sensitivity and specificity of “fundus on phone’ (FOP) camera, a smartphone based retinal imaging system, as a screening tool for diabetic retinopathy (DR) detection and DR severity in comparison with 7-standard field digital retinal photography. Design Single-site, prospective, comparative, instrument validation study. Methods 301 patients (602 eyes) with type 2 diabetes underwent standard seven-field digital fundus photography with both Carl Zeiss fundus camera and indigenous FOP at a tertiary care diabetes centre in South India. Grading of DR was performed by two independent retina specialists using modified Early Treatment of Diabetic Retinopathy Study grading system. Sight threatening DR (STDR) was defined by the presence of proliferative DR(PDR) or diabetic macular edema. The sensitivity, specificity and image quality were assessed. Results The mean age of the participants was 53.5 ±9.6 years and mean duration of diabetes 12.5±7.3 years. The Zeiss camera showed that 43.9% had non-proliferative DR(NPDR) and 15.3% had PDR while the FOP camera showed that 40.2% had NPDR and 15.3% had PDR. The sensitivity and specificity for detecting any DR by FOP was 92.7% (95%CI 87.8–96.1) and 98.4% (95%CI 94.3–99.8) respectively and the kappa (ĸ) agreement was 0.90 (95%CI-0.85–0.95 p<0.001) while for STDR, the sensitivity was 87.9% (95%CI 83.2–92.9), specificity 94.9% (95%CI 89.7–98.2) and ĸ agreement was 0.80 (95%CI 0.71–0.89 p<0.001), compared to conventional photography. Conclusion Retinal photography using FOP camera is effective for screening and diagnosis of DR and STDR with high sensitivity and specificity and has substantial agreement with conventional retinal photography. PMID:26401839

  16. Dental pulp stem cells

    PubMed Central

    Ashri, Nahid Y.; Ajlan, Sumaiah A.; Aldahmash, Abdullah M.

    2015-01-01

    Inflammatory periodontal disease is a major cause of loss of tooth-supporting structures. Novel approaches for regeneration of periodontal apparatus is an area of intensive research. Periodontal tissue engineering implies the use of appropriate regenerative cells, delivered through a suitable scaffold, and guided through signaling molecules. Dental pulp stem cells have been used in an increasing number of studies in dental tissue engineering. Those cells show mesenchymal (stromal) stem cell-like properties including self-renewal and multilineage differentiation potentials, aside from their relative accessibility and pleasant handling properties. The purpose of this article is to review the biological principles of periodontal tissue engineering, along with the challenges facing the development of a consistent and clinically relevant tissue regeneration platform. This article includes an updated review on dental pulp stem cells and their applications in periodontal regeneration, in combination with different scaffolds and growth factors. PMID:26620980

  17. [Hardening of dental instruments].

    PubMed

    Gerasev, G P

    1981-01-01

    The possibility of prolonging the service life of stomatological instruments by the local hardening of their working parts is discussed. Such hardening should be achieved by using hard and wear-resistant materials. The examples of hardening dental elevators and hard-alloy dental drills are given. New trends in the local hardening of instruments are the treatment of their working parts with laser beams, the application of coating on their surface by the gas-detonation method. The results of research work and trials are presented. PMID:7300627

  18. Performance of Dental Ceramics

    PubMed Central

    Rekow, E.D.; Silva, N.R.F.A.; Coelho, P.G.; Zhang, Y.; Guess, P.; Thompson, V.P.

    2011-01-01

    The clinical success of modern dental ceramics depends on an array of factors, ranging from initial physical properties of the material itself, to the fabrication and clinical procedures that inevitably damage these brittle materials, and the oral environment. Understanding the influence of these factors on clinical performance has engaged the dental, ceramics, and engineering communities alike. The objective of this review is to first summarize clinical, experimental, and analytic results reported in the recent literature. Additionally, it seeks to address how this new information adds insight into predictive test procedures and reveals challenges for future improvements. PMID:21224408

  19. Dental Support Organizations.

    PubMed

    Dufurrena, Quinn

    2015-01-01

    The Association of Dental Support Organizations is a recently formed association of 33 companies representing a range of management and support services for dental practices. These organizations do not engage in the practice of dentistry, although in some cases they operate as holding companies for practices that do, thus separating the legal responsibility of providing treatment from the management and flow of funds. This report summarizes some of the recent trends in oral health care and dentists' practice patterns that are prompting the increased prevalence of this model. The general functioning of the DSO model is described, including some common variations, and the core values of ADSO are featured. PMID:26455048

  20. 75 FR 16511 - Pentron Clinical Technologies, a Wholly-Owned Subsidiary of Kerr Dental/Sybron Dental...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-01

    ... the Federal Register on February 16, 2010 (75 FR 7037). At the request of the State Agency, the... such as dental prosthetics, dental composites, dental impressions, dental adhesives, and other dental... prosthetics, dental composites, dental impressions, dental adhesives, and other dental materials to...

  1. Drugs that promote dental caries.

    PubMed

    2015-02-01

    Dental caries result from erosion of tooth enamel or cementum by acidic substances produced by bacteria found in dental plaque. Caries can lead to pulp necrosis and tooth loss. Risk factors include certain dietary habits, poor oral hygiene, and dry mouth. Diabetes and Sjogren's syndrome can also promote dental caries. Psychotropic substances such as cocaine, methamphetamine, heroin and cannabis can promote dental caries. Many medicinal drugs facilitate the formation of dental caries, through various mechanisms; they include formulations with a high sugar content; drugs that cause dry mouth (especially antimuscarinics); drugs that lower the buccal pH (inhaled powders, etc.); and drugs that cause demineralisation (tetracyclines, etc.). In practice, patients (and parents) should be informed that some drugs can increase the risk of dental caries. They should be encouraged to adapt and reinforce dental hygiene, and advised to visit a dentist regularly. PMID:25802916

  2. Review of Spaceflight Dental Emergencies

    NASA Technical Reports Server (NTRS)

    Menon, Anil

    2012-01-01

    All exploration class missions--extending beyond earth's orbit--differ from existing orbital missions by being of longer duration and often not having a means of evacuation. If an exploration mission extends beyond a year, then there will be a greater lapse since the crewmembers last terrestrial dental exams, which routinely occur each year. This increased time since professional dental care could increase the chance of a dental emergency such as intractable pain, dental decay requiring a temporary filling, crown replacement, exposed pulp, abscess, tooth avulsion, or toothache. Additionally, any dental emergency will have to be treated in-flight with available resources and personnel who may not have extensive training in dental care. Thus, dental emergencies are an important risk to assess in preparation for exploration missions.

  3. Smoking and dental implants

    PubMed Central

    Kasat, V.; Ladda, R.

    2012-01-01

    Smoking is a prevalent behaviour in the population. The aim of this review is to bring to light the effects of smoking on dental implants. These facts will assist dental professionals when implants are planned in tobacco users. A search of “PubMed” was made with the key words “dental implant,” “nicotine,” “smoking,” “tobacco,” and “osseointegration.” Also, publications on tobacco control by the Government of India were considered. For review, only those articles published from 1988 onward in English language were selected. Smoking has its influence on general as well as oral health of an individual. Tobacco negatively affects the outcome of almost all therapeutic procedures performed in the oral cavity. The failure rate of implant osseointegration is considerably higher among smokers, and maintenance of oral hygiene around the implants and the risk of peri-implantitis are adversely affected by smoking. To increase implant survival in smokers, various protocols have been recommended. Although osseointegrated dental implants have become the state of the art for tooth replacement, they are not without limitations or complications. In this litigious era, it is extremely important that the practitioner clearly understands and is able and willing to convey the spectrum of possible complications and their frequency to the patients. PMID:24478965

  4. Skylab Dental Examination

    NASA Technical Reports Server (NTRS)

    1973-01-01

    Skylab 2 Commander Charles Conrad is seen undergoing a dental examination by the Medical Officer, Joseph Kerwin in the Skylab Medical Facility. In the absence of an examination chair, Conrad simply rotated his body to an upside down position to facilitate the procedure.

  5. Dental Health in TSC

    MedlinePlus

    ... to occur in nearly 100% of the TSC population. Not all dental pits are cavities; they are just areas where enamel did not form, but can be an area where food can build up and start a cavity. Gums The gums may have small areas of growth called gingival fibromas , which are mostly harmless and ...

  6. Dental Issues & Down Syndrome

    MedlinePlus

    ... dental school, has extra training in caring for patients with disabilities. The Special Care Dentistry Association is a resource to find a dentist ... for children who grind their teeth, because the risk of the child choking on the mouthguard if it breaks ... Academy of Pediatric Dentistry www.aapd.org Find a dentist at www. ...

  7. Finding Dental Care

    MedlinePlus

    ... Main Content National Institute of Dental and Craniofacial Research (NIDCR) Improving the Nation's Oral Health National Institutes of Health Español Staff Directory A–Z Index Search Text size: Website Contents NIDCR Home Oral Health Diseases and Conditions Gum ...

  8. Dental Optical Coherence Tomography

    PubMed Central

    Hsieh, Yao-Sheng; Ho, Yi-Ching; Lee, Shyh-Yuan; Chuang, Ching-Cheng; Tsai, Jui-che; Lin, Kun-Feng; Sun, Chia-Wei

    2013-01-01

    This review paper describes the applications of dental optical coherence tomography (OCT) in oral tissue images, caries, periodontal disease and oral cancer. The background of OCT, including basic theory, system setup, light sources, spatial resolution and system limitations, is provided. The comparisons between OCT and other clinical oral diagnostic methods are also discussed. PMID:23857261

  9. [Instruction in dental radiology].

    PubMed

    van der Sanden, W J M; Kreulen, C M; Berkhout, W E R

    2016-04-01

    The diagnostic use of oral radiology is an essential part of daily dental practice. Due to the potentially harmful nature of ionising radiation, the clinical use of oral radiology in the Netherlands is framed by clinical practice guidelines and regulatory requirements. Undergraduate students receive intensive theoretical and practical training in practical and theoretical radiology, with the aim of obtaining the 'Eindtermen Stralingshygiëne voor Tandartsen en Orthodontisten'-certificate, which is required for legal permission to use oral radiology in dental practice. It is recommended that the curriculum be expanded to include the areas of knowledge required to qualify for the 'Eindtermen Stralingshygiëne voor het gebruik van CBCT-toestellen door tandartsen' (the certificate for the use of conebeam radiology by dentists). The general dental practitioner is faced with changing laws and regulations in all areas of practice. One of the most significant legal changes in the field of dental radiology was the introduction of the new radiation protection and safety rules in 2014. Moreover, a large group of dentists is also being confronted with the transition from conventional to digital images, with all its challenges and changes in everyday practice. PMID:27073811

  10. FATIGUE OF DENTAL CERAMICS

    PubMed Central

    Zhang, Yu; Sailer, Irena; Lawn, Brian R

    2013-01-01

    Objectives Clinical data on survival rates reveal that all-ceramic dental prostheses are susceptible to fracture from repetitive occlusal loading. The objective of this review is to examine the underlying mechanisms of fatigue in current and future dental ceramics. Data/sources The nature of various fatigue modes is elucidated using fracture test data on ceramic layer specimens from the dental and biomechanics literature. Conclusions Failure modes can change over a lifetime, depending on restoration geometry, loading conditions and material properties. Modes that operate in single-cycle loading may be dominated by alternative modes in multi-cycle loading. While post-mortem examination of failed prostheses can determine the sources of certain fractures, the evolution of these fractures en route to failure remains poorly understood. Whereas it is commonly held that loss of load-bearing capacity of dental ceramics in repetitive loading is attributable to chemically-assisted 'slow crack growth' in the presence of water, we demonstrate the existence of more deleterious fatigue mechanisms, mechanical rather than chemical in nature. Neglecting to account for mechanical fatigue can lead to gross overestimates in predicted survival rates. Clinical significance Strategies for prolonging the clinical lifetimes of ceramic restorations are proposed based on a crack-containment philosophy. PMID:24135295

  11. Ethics of dental health screening.

    PubMed

    Janakiram, Chandrashekar; Taha, Farheen

    2016-01-01

    Screening is the detection of disease at a point in its natural history when it is not yet symptomatic. In the natural history of dental caries, for example, the incipient lesions are at a reversible stage, which is a pre-symptomatic or an unrecognised symptomatic disease. Ideally, this is the stage during which screening should identify the risk of dental caries; however, presently, the so-called dental screening employed identifies the clinical cavitation of the tooth, which is very obvious to the individual. The individual already knows that he/she has dental caries and needs treatment, which the screening personnel (dental doctor) explains again during the screening procedure. Is it ethical to call such an event screening? The mushrooming of dental teaching hospitals has promoted regular screening of dental diseases among the communities and schoolchildren through their community dentistry-related activities. More often, it is a dental "check-up" that is carried out on the pretext of screening for dental diseases. Though the basic intention of this activity is to promote awareness of dental diseases and promote good health, there is also a hidden agenda to it. An artificial demand for dental care is created that is easily capitalised on by the dental teaching institutions to enhance its clinical activity. Dental screening is doing more harm than good as patients are made aware of the diseases for which they may not be able to afford treatment. This narrative review gives an account of the scientific evidence on screening for oral diseases, the current practices in screening and the ethical dilemmas of dental screening programmes. PMID:27474698

  12. New horizons for the national high-altitude photography program

    USGS Publications Warehouse

    Bermel, Peter F.

    1983-01-01

    The National High-Altitude Photography Program (NHAP) is a multi-Federal agency activity to acquire uniform imagery for the establishment of a national high-altitude photographic data base. Federal agencies participating in NHAP have pooled their resources and consolidated photographic requirements in a systematic 6-year effort that will minimize duplication of photographic programs, reduce overall Federal expenditures for aerial photography, and provide imagery for a wide range of public and private users, The U.S. Geological Survey has the lead coordination role and shares, with the other participating agencies, the responsibility for funding the acquisition of photography. Since the inception of NHAP in 1980, black-and-white and color infrared stereoscopic imagery has been acquired for about 50% of the 3,000,000 square miles in the conterminous United States. An additional 40% of the 48-State area is under contract to provide aerial survey firms, and the sixth and final contract to achieve complete once-over coverage will be awarded early in 1985. Extensive use has been made of the newly established data base for mapping, landform studies, land use planning, natural resource inventory, evaluation and management, engineering, and education. In anticipation of the completion of once-over coverage, the participating agencies have begun studies to define the requirements for a maintenance program which would provide cyclic coverage of the conterminous United States and imagery for specific agency needs. Although continued funding at the same level is not assured, under consideration are requirements for new cameras, films, and other remote sensors, photographic parameters, and extension of program coverage to Alaska, Hawaii, and outlying areas. In addition, new applications of the data base to prepare cartographic map and data products are being investigated. It is becoming increasingly clear that some major decision needs to be made soon if a NHAP II is to begin in

  13. Practice of near-infrared photography of snowpits

    NASA Astrophysics Data System (ADS)

    Schneebeli, M.

    2008-12-01

    Documentation and quantification of snow pits using near-infrared sensitive photography is a cheap and efficient technique (Matzl and Schneebeli, 2006). However, the quantitative processing of images from conventional digital cameras is not without pitfalls. The camera must be calibrated for intensity variation caused by the optic, which must done under homogenous illumination. In the field, a simple way was found to setup diffuse illumination, to prepare the pit, to position the calibration targets and to take the flat field reference image. The processing of the raw image to determine the absolute reflectivity requires several steps. First, the green channel of the raw image is extracted and interpolated. The green channel of most digital CCD has the highest number of pixels. Because the red-green-blue filters on the chip filter near- infrared red differently, a single color channel image is less noisy than a composite image. This raw image is then normalized by the optical correction image, and subsequently corrected for illumination heterogeneity by the field flat field image. This image can now be referenced to absolute reflectivity using the calibration targets. The calibrated image is used to segment quantitatively for optical grain diameter and specific surface area. A more qualitative interpretation of the snow stratigraphy, using image classification algorithms, is also possible. The equipment developed for near-infrared photography is transportable in a backpack and is used in alpine terrain. Images from different field campaigns in the Alps show the wide range of features, which are not easily documented using traditional stratigraphy. Matzl, M.; Schneebeli, M., 2006: Measuring specific surface area of snow by near-infrared photography. J. Glaciol. 52, 179: 558-564

  14. Mapping Chinese tallow with color-infrared photography

    USGS Publications Warehouse

    Ramsey, Elijah W., III; Nelson, G.A.; Sapkota, S.K.; Seeger, E.B.; Martella, K.D.

    2002-01-01

    Airborne color-infrared photography (CIR) (1:12,000 scale) was used to map localized occurrences of the widespread and aggressive Chinese tallow (Sapium sebiferum), an invasive species. Photography was collected during senescence when Chinese tallow's bright red leaves presented a high spectral contrast within the native bottomland hardwood and upland forests and marsh land-cover types. Mapped occurrences were conservative because not all senescing tallow leaves are bright red simultaneously. To simulate low spectral but high spatial resolution satellite/airborne image and digital video data, the CIR photography was transformed into raster images at spatial resolutions approximating 0.5 in and 1.0 m. The image data were then spectrally classified for the occurrence of bright red leaves associated with senescing Chinese tallow. Classification accuracies were greater than 95 percent at both spatial resolutions. There was no significant difference in either forest in the detection of tallow or inclusion of non-tallow trees associated with the two spatial resolutions. In marshes, slightly more tallow occurrences were mapped with the lower spatial resolution, but there were also more misclassifications of native land covers as tallow. Combining all land covers, there was no difference at detecting tallow occurrences (equal omission errors) between the two resolutions, but the higher spatial resolution was associated with less inclusion of non-tallow land covers as tallow (lower commission error). Overall, these results confirm that high spatial (???1 m) but low spectral resolution remote sensing data can be used for mapping Chinese tallow trees in dominant environments found in coastal and adjacent upland landscapes.

  15. Application Of High Speed Photography In Science And Technology

    NASA Astrophysics Data System (ADS)

    Wu Ji-Zong, Wu; Yu-Ju, Lin

    1983-03-01

    The service works in high-speed photography carried out by the Department of Precision Instruments, Tianjin University are described in this paper. A compensation type high-speed camera was used in these works. The photographic methods adopted and better results achieved in the studies of several technical fields, such as velocity field of flow of overflow surface of high dam, combustion process of internal combustion engine, metal cutting, electrical are welding, experiment of piling of steel tube piles for supporting the marine platforms and characteristics of motion of wrist watch escape mechanism and so on are illustrated in more detail. As the extension of human visual organs and for increasing the abi-lities of observing and studying the high-speed processes, high-speed photography plays a very important role. In order to promote the application and development on high-speed photography, we have carried out the consultative and service works inside and outside Tianjin Uni-versity. The Pentazet 35 compensation type high-speed camera, made in East Germany, was used to record the high-speed events in various kinds of technical investigations and necessary results have been ob-tained. 1. Measurement of flow velocity on the overflow surface of high dam. In the design of a key water control project with high head, it is extremely necessary to determinate various characteristics of flow velocity field on the overflow surface of high dam. Since the water flow on the surface of high overflow dam possesses the features of large flow velocity and shallow water depth, therefore it is difficult to use the conventional current meters such as pilot tube, miniature cur-rent meter or electrical measuring methods of non-electrical quantities for studying this problem. Adopting the high-speed photographic method to study analogously the characteristics of flow velocity field on the overflow surface of high dam is a kind of new measuring method. People

  16. Astronomy education through hands-on photography workshops

    NASA Astrophysics Data System (ADS)

    Schofield, I.; Connors, M. G.; Holmberg, R.

    2013-12-01

    Athabasca University (AU), Athabasca University Geophysical and Geo-Space Observatories (AUGO / AUGSO), the Rotary Club of Athabasca and Science Outreach Athabasca has designed a three day science workshop entitled Photography and the Night Sky. This pilot workshop, aimed primarily at high-school aged students, serves as an introduction to observational astronomy as seen in the western Canadian night sky using digital astrophotography without the use of a telescope or tracking mount. Participants learn the layout of the night sky by proficiently photographing it using digital single lens reflex camera (DSLR) kits including telephoto and wide-angle lenses, tripod and cable release. The kits are assembled with entry-level consumer-grade camera gear as to be affordable by the participants, if they so desire to purchase their own equipment after the workshop. Basic digital photo editing is covered using free photo editing software (IrfanView). Students are given an overview of observational astronomy using interactive planetarium software (Stellarium) before heading outdoors to shoot the night sky. Photography is conducted at AU's auroral observatories, both of which possess dark open sky that is ideal for night sky viewing. If space weather conditions are favorable, there are opportunities to photograph the aurora borealis, then compare results with imagery generated by the all-sky auroral imagers located at the Geo-Space observatory. The aim of this program is to develop awareness to the science and beauty of the night sky, while promoting photography as a rewarding, lifelong hobby. Moreover, emphasis is placed on western Canada's unique subauroral location that makes aurora watching highly accessible and rewarding in 2013, the maximum of the current solar cycle.

  17. Dental Health - Multiple Languages: MedlinePlus

    MedlinePlus

    ... 繁體中文 (Chinese - Traditional) PDF California Dental Association Dental Tourism English 牙科旅行 - 繁體中文 (Chinese - Traditional) PDF California Dental ... NEEG MOB - Hmoob (Hmong) California Dental Association Dental Tourism English Kev Kho Hniav Txawv Teb Chaws - Hmoob ( ...

  18. 21 CFR 872.3240 - Dental bur.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Dental bur. 872.3240 Section 872.3240 Food and... DENTAL DEVICES Prosthetic Devices § 872.3240 Dental bur. (a) Identification. A dental bur is a rotary... materials intended for use in the fabrication of dental devices. (b) Classification. Class I...

  19. 21 CFR 872.3240 - Dental bur.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Dental bur. 872.3240 Section 872.3240 Food and... DENTAL DEVICES Prosthetic Devices § 872.3240 Dental bur. (a) Identification. A dental bur is a rotary... materials intended for use in the fabrication of dental devices. (b) Classification. Class I...

  20. 21 CFR 872.3240 - Dental bur.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Dental bur. 872.3240 Section 872.3240 Food and... DENTAL DEVICES Prosthetic Devices § 872.3240 Dental bur. (a) Identification. A dental bur is a rotary... materials intended for use in the fabrication of dental devices. (b) Classification. Class I...

  1. 21 CFR 872.3240 - Dental bur.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Dental bur. 872.3240 Section 872.3240 Food and... DENTAL DEVICES Prosthetic Devices § 872.3240 Dental bur. (a) Identification. A dental bur is a rotary... materials intended for use in the fabrication of dental devices. (b) Classification. Class I...

  2. 21 CFR 872.3240 - Dental bur.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Dental bur. 872.3240 Section 872.3240 Food and... DENTAL DEVICES Prosthetic Devices § 872.3240 Dental bur. (a) Identification. A dental bur is a rotary... materials intended for use in the fabrication of dental devices. (b) Classification. Class I...

  3. Allied Dental Education: Past, Present, and Future.

    ERIC Educational Resources Information Center

    DeVore, Linda Rubinstein

    1993-01-01

    A discussion of the status of the three allied dental disciplines (dental assisting, dental technology, and dental hygiene) gives a historical overview on allied dental programs, assesses their current status and enrollment trends, identifies critical issues affecting educational programs, and outlines a framework for innovation in recruitment and…

  4. Declassified Intelligence Satellite Photography (DISP) Coverage of Antarctica

    NASA Technical Reports Server (NTRS)

    Bindschadler, Robert; Seider, Wendy

    1998-01-01

    This report summarizes the results of a nine-week summer project examining all Declassified Intelligence Satellite Photography (DISP) of Antarctica. It was discovered that the data were collected in three separate missions during 1962 and 1963. The first two missions covered only the coastal areas, while the third mission covered the entire continent. Many of the 1782 frames collected were cloudy. This is especially true of West Antarctica. An optimal set of photographs covering the entire Antarctic coastline is identified along with some examples that show changes in the coastline which have occurred since the early 1960s.

  5. Multiple rotation assessment through isothetic fringes in speckle photography

    NASA Astrophysics Data System (ADS)

    Ángel, Luciano; Tebaldi, Myrian; Bolognini, Néstor

    2007-05-01

    The use of different pupils for storing each speckled image in speckle photography is employed to determine multiple in-plane rotations. The method consists of recording a four-exposure specklegram where the rotations are done between exposures. This specklegram is then optically processed in a whole field approach rendering isothetic fringes, which give detailed information about the multiple rotations. It is experimentally demonstrated that the proposed arrangement permits the depiction of six isothetics in order to measure either six different angles or three nonparallel components for two local general in-plane displacements.

  6. Photography & Physics: A Way to Enhance Student Learning

    NASA Astrophysics Data System (ADS)

    Meyers, Fred

    2007-10-01

    A teaching/learning strategy that I have developed over the years for high school students involves the use of photographic images of ordinary objects or scenes to help engage students in the intrigue and beauty of physics. The images help focus classroom discussions, raise curiosity levels among students, and promote creativity of thinking. The photographs can be used in a variety of ways, including assessment, framing discussions, homework assignment, and constructive classroom games. This presentation will describe the various ways photography can be used and will model some techniques. Dozens of ``physics images'' will be shown.

  7. Skylab-2 handheld photography alphabetized geographical features list

    NASA Technical Reports Server (NTRS)

    Mcniel, J. L.; Devalcourt, C. C.

    1974-01-01

    This publication represents a relisting of the Skylab-2, PTD Handheld Photography Catalog. The purpose of this publication is to provide imagery researchers a supplement to the PTD Catalog by alphabetically sorting together all similar major and minor features. Some cross-referencing of feature names was accomplished where the authors deemed necessary; however, no attempt was made to exhaust all possible means of cross-referencing. An example of the cross-referencing which was done: Kuril Islands may be found under the major feature column and also as a minor feature of Islands.

  8. Method of reducing temperature in high-speed photography

    NASA Technical Reports Server (NTRS)

    Walker, E. D.; Slater, H. A.

    1984-01-01

    A continuing problem in high-speed motion picture photography is adequate lighting and the associated temperature rise. Large temperature rises can damage subject matter and make recording of the desired images impossible. The problem is more severe in macrophotography because of bellows extension and the necessary increase in light. This report covers one approach to reducing the initial temperature rise: the use of filters and heat-absorbing materials. The accompanying figures provide the starting point for selecting distance as a function of light intensity and determining the associated temperature rise. Using these figures will allow the photographer greater freedom in meeting different photographic situations.

  9. American ASTP prime crew participate in photography mission briefing

    NASA Technical Reports Server (NTRS)

    1975-01-01

    The three American ASTP prime crew astronauts participate in a photography mission briefing in bldg 5 with Dr. Farouk El-Baz (wearing face mask) during Apollo Soyuz Test Project (ASTP) pre-flight activity at JSC. They are, left to right, Thomas P. Stafford, commander; Vance D. Brand, command module pilot; Dr. El-Baz; and Donald K. Slayton, docking module pilot. Dr. El-Baz is with the Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution. The face mask is to protect the crewmen from possible exposure to disease prior to launch time.

  10. Long-term change detection from historical photography

    NASA Astrophysics Data System (ADS)

    Yoon, T.; Schenk, T.

    2006-12-01

    There is an increasing awareness in the science community about the potential of utilizing old photography and derived products together with new data for change detection and for extending the timeline as far back as possible. For example recent observations have revealed dramatic changes in the behavior of many ice streams and outlet glaciers in Greenland and Antarctica, ranging from complete shutdown of ice streams to manifold increases in velocity. Most observations are typically from the comparatively short time period since the beginning of the civilian satellite imagery (1980s), with most quantitative measurements starting only 10-15 years ago. To evaluate whether ongoing observed changes are climatically significant, changes must be determined over longer time frames. Earlier terrestrial and aerial photography and maps indeed exist and the objective of the project to disseminate these historical data and to develop techniques and tools for combining (fusing) old and new data in order to compile long-term time series of changes in the polar regions, for example in ice extent, velocity and surface elevations. The presentation focuses on new methodologies and interdisciplinary approaches that greatly facilitate the use of old photography for quantitative studies in the polar regions. An absolute prerequisite for the successful use of old photography is a rigorous registration, either with other sensory input data or with respect to 3D reference systems. Recent advances in digital photogrammetry allow registration with linear features, such as lines, curves and free-form lines without the need for identifying identical points. The concept of sensor invariant features was developed to register such disparate data sets as aerial imagery and 3D laser point clouds, originating from satellite laser altimetry or airborne laser scanning systems. Examples illustrating these concepts are shown from the Transantarctic Mountains, including the registration of aerial

  11. Forensic photography. Ultraviolet imaging of wounds on skin.

    PubMed

    Barsley, R E; West, M H; Fair, J A

    1990-12-01

    The use of ultraviolet light (UVL) to study and document patterned injuries on human skin has opened a new frontier for law enforcement. This article discusses the photographic techniques involved in reflective and fluorescent UVL. Documentation of skin wounds via still photography and dynamic video photographic techniques, which utilize various methods of UV illumination, are covered. Techniques important for courtroom presentation of evidence gathered from lacerations, contusions, abrasions, and bite marks are presented through case studies and controlled experiments. Such injuries are common sequelae in the crimes of child abuse, rape, and assault. PMID:2275466

  12. Nonmydriatic retinal photography in the evaluation of acute neurologic conditions

    PubMed Central

    Bidot, Samuel; Bruce, Beau B.; Newman, Nancy J.; Biousse, Valérie

    2013-01-01

    Summary Ocular fundus examination is a fundamental component of the neurologic examination. Finding papilledema in headache patients or retinal arterial emboli in stroke patients can be extremely useful. Although examination of the ocular fundus with a direct ophthalmoscope is an important skill for all neurologists, it is rarely and unreliably performed. Nonmydriatic ocular fundus photography, which allows direct visualization of high-quality photographs of the ocular fundus, has been recently proposed for screening neurologic patients in urgent care settings such as emergency departments. This new technology has many potential applications in neurology, including e-transmission of images for remote interpretation. PMID:24353924

  13. Pathology Gross Photography: The Beginning of Digital Pathology.

    PubMed

    Rampy, B Alan; Glassy, Eric F

    2016-03-01

    The underutilized practice of photographing anatomic pathology specimens from surgical pathology and autopsies is an invaluable benefit to patients, clinicians, pathologists, and students. Photographic documentation of clinical specimens is essential for the effective practice of pathology. When considering what specimens to photograph, all grossly evident pathology, absent yet expected pathologic features, and gross-only specimens should be thoroughly documented. Specimen preparation prior to photography includes proper lighting and background, wiping surfaces of blood, removing material such as tubes or bandages, orienting the specimen in a logical fashion, framing the specimen to fill the screen, positioning of probes, and using the right-sized scale. PMID:26851666

  14. Pathology Gross Photography: The Beginning of Digital Pathology.

    PubMed

    Rampy, B Alan; Glassy, Eric F

    2015-06-01

    The underutilized practice of photographing anatomic pathology specimens from surgical pathology and autopsies is an invaluable benefit to patients, clinicians, pathologists, and students. Photographic documentation of clinical specimens is essential for the effective practice of pathology. When considering what specimens to photograph, all grossly evident pathology, absent yet expected pathologic features, and gross-only specimens should be thoroughly documented. Specimen preparation prior to photography includes proper lighting and background, wiping surfaces of blood, removing material such as tubes or bandages, orienting the specimen in a logical fashion, framing the specimen to fill the screen, positioning of probes, and using the right-sized scale. PMID:26065794

  15. Prevalence of Dental Fear and Anxiety amongst Patients in Selected Dental Clinics in Ghana

    ERIC Educational Resources Information Center

    Ofori, Marian A.; Adu-Ababio, F.; Nyako, E. A.; Ndanu, Tom A.

    2009-01-01

    Objective: To find out the prevalence of dental anxiety and fear amongst patients in various selected dental clinics in Accra, Ghana. Study design: Dental patients (n = 279) who had either been exposed to dental treatments or had no prior dental exposure, attending four selected dental clinics in Accra were randomly sampled. They were interviewed…

  16. Photography as a Data Generation Tool for Qualitative Inquiry in Education.

    ERIC Educational Resources Information Center

    Cappello, Marva

    This paper discusses the ways in which photography was used for data generation in a 9-month qualitative study on a mixed-age elementary school classroom. Through a review of the research literature in anthropology, sociology, and education, and an analysis of the research data, the usefulness of photography for educational research with young…

  17. The use of high altitude aerial photography to inventory wildlife habitat in Kansas: An initial evaluation

    NASA Technical Reports Server (NTRS)

    Merchant, J. W.; Waddell, B. H.

    1974-01-01

    The use of aerial photography as a method for determining the wildlife conditions of an area is discussed. Color infrared photography is investigated as the most effective type of remote sensor. The characteristics of the remote sensing systems are described. Examples of the remote sensing operation and the method for reducing the data are presented.

  18. Photography Basics. Capturing the Essence of Physical Education and Sport Programs.

    ERIC Educational Resources Information Center

    Kluka, Darlene A.; Mitchell, Carolyn B.

    1990-01-01

    The physical educator or coach may be responsible for marketing programs to the public, and skill in 35mm photography can help. Ingredients necessary for successful 35mm movement photography are discussed: knowledge of the movement and the appropriate equipment; techniques for capturing movement; positioning for the ultimate shot; and practice.…

  19. Through the lens of young people: use of photography in hospital design.

    PubMed

    Coad, Jane

    2016-05-01

    Whilst arts in hospitals have been perceived as therapeutic to patients, this paper will share evidence and research to support that photography and photo-elicitation has an important role in preference and choice about hospital design. The paper will initially draw on studies that used participatory photography in children's hospital design in international settings. PMID:27214415

  20. 50 CFR 27.71 - Commercial filming and still photography and audio recording.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 50 Wildlife and Fisheries 9 2013-10-01 2013-10-01 false Commercial filming and still photography and audio recording. 27.71 Section 27.71 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR (CONTINUED) THE NATIONAL WILDLIFE REFUGE SYSTEM PROHIBITED ACTS Disturbing Violations: Filming, Photography, and...

  1. The Importance of Artificial Light in the Development of Night Photography.

    ERIC Educational Resources Information Center

    Wood, Deloris

    This study traces the development of night photography, from February 7, 1839, when the effect of the moon on a Daguerreotype was first recorded by Alexander Von Humboldt, to the present. The contributions of the following photographers who advanced the field of night photography are discussed: Margaret Bourke-White, Paul Martin, Brassai, Bill…

  2. Exploring the Role of Digital Photography to Enhance Student Inquiry in a Local Ecosystem

    ERIC Educational Resources Information Center

    Rivet, Ann; Schneider, Rebecca

    2004-01-01

    Digital photography has the potential to support student inquiry in real-world settings. However, specific ideas for the most effective use of digital photography to benefit students during inquiry, as well as the evidence indicating that this is possible, have not yet been established. Forty-one seventh-grade students used digital cameras and…

  3. Digital Photography and Web-Based Assignments in an Urban Field Course: Snapshots from Berlin

    ERIC Educational Resources Information Center

    Latham, Alan; McCormack, Derek P.

    2007-01-01

    This paper reflects on the use of digital photography in urban-based human geography fieldwork. It draws on the authors' experience of introducing digital photography into the teaching and assessment of a level 3 undergraduate field course in Berlin. To begin they outline how they sought to use simple digital technologies in order to facilitate…

  4. 36 CFR 5.5 - Commercial filming, still photography, and audio recording.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... of 43 CFR part 5, subpart A. Failure to comply with any provision of 43 CFR part 5 is a violation of... schedule for still photography conducted under a permit issued under 43 CFR part 5 applies to audio... photography, and audio recording. 5.5 Section 5.5 Parks, Forests, and Public Property NATIONAL PARK...

  5. Investigative Photography, 16-1. Military Curriculum Materials for Vocational and Technical Education.

    ERIC Educational Resources Information Center

    Ohio State Univ., Columbus. National Center for Research in Vocational Education.

    This military-developed text consists of nine lessons dealing with investigative photography. Covered in the individual lessons are the following topics: light (light as the basis of photography, the behavior of light, the composition of white light, light transmission, reflection and absorption, illumination, and pinholes and light); camera…

  6. Counseling through Images: Using Photography to Guide the Counseling Process and Achieve Treatment Goals

    ERIC Educational Resources Information Center

    Ginicola, Misty M.; Smith, Cheri; Trzaska, Jessica

    2012-01-01

    Creative approaches to counseling help counselors to meet the needs of diverse populations. The utility of photography in counseling has been demonstrated through several case studies; however, clear implications of how photography relates to the counseling process have not been well delineated. The existing literature on phototherapy is reviewed…

  7. 15 CFR 265.42 - Photography for advertising or commercial purposes; advertising and soliciting.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 15 Commerce and Foreign Trade 1 2010-01-01 2010-01-01 false Photography for advertising or commercial purposes; advertising and soliciting. 265.42 Section 265.42 Commerce and Foreign Trade Regulations... COLLINS, COLORADO Buildings and Grounds § 265.42 Photography for advertising or commercial...

  8. Photography in bite mark and patterned injury documentation--Part 1.

    PubMed

    Wright, F D

    1998-07-01

    Photography is an important means of collecting and preserving physical evidence as it relates to bite mark and patterned injuries in skin. Proper use and understanding of color, black-and-white, ultraviolet and infrared photography can greatly aid the collection and preservation of evidence. The techniques and equipment for the photo-documentation of this evidence are presented. PMID:9670512

  9. A semi-operational agricultural inventory using small scale aerial photography

    NASA Technical Reports Server (NTRS)

    Draeger, W. C.; Pettinger, L. R.

    1970-01-01

    The feasibility of performing inventories of agricultural resources using very small scale aerial or space photography was studied. The results were encouraging on two counts: (1) The very practical problems of an operational survey are being faced and solutions are being found. (2) It seems that a fully operational agricultural inventory using space photography is not beyond the scope of present technology.

  10. The Power of Photography as a Catalyst for Teaching Informational Writing

    ERIC Educational Resources Information Center

    Lilly, Elizabeth; Fields, Charla

    2014-01-01

    Writing and photography are composition processes that help develop children's linguistic and visual competencies, respectively. Using photography in teaching writing has been found to enhance students' literacy skills by naturally invoking their interest and motivation, and eventually strengthening the reading-writing relationship.…

  11. Simultaneous velocity interferometry and electronic streak photography of laser-launched plates

    SciTech Connect

    Paisley, D.L.; Stahl, D.B.; Garcia, I.A.

    1991-01-01

    Laser-launched, miniature, pseudo-one-dimensional flyer plates are evaluated by three distinct optical techniques that may be incorporated into an optical diagnostic system to give a complete understanding of the plate performance. These techniques are: velocity interferometry, streak photography, and pulsed laser stereo photography. 2 refs., 5 figs.

  12. Using Photography and Art in Concept Mapping Research with Adults with Dyslexia

    ERIC Educational Resources Information Center

    Williams Carawan, Lena; Nalavany, Blace

    2010-01-01

    Reflexive photography for individual interviews and the use of art with focus groups provides a valuable method for exploring the psychosocial issues encountered by adults with dyslexia. Reflexive photography and art is particularly appropriate when interviewing adults with dyslexia who may have difficulty expressing and focusing on what they want…

  13. 78 FR 58342 - Proposed Fee Schedule for Commercial Filming and Still Photography Permits

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-23

    ... Wildlife Service, the Bureau of Land Management and U.S. Forest Service (78 FR 52209). The fees would... Forest Service Proposed Fee Schedule for Commercial Filming and Still Photography Permits AGENCY: Office... proposed fee schedule for commercial filming and still photography conducted on public lands under...

  14. Detection of retinal lesions in diabetic retinopathy: comparative evaluation of 7-field digital color photography versus red-free photography.

    PubMed

    Venkatesh, Pradeep; Sharma, Reetika; Vashist, Nagender; Vohra, Rajpal; Garg, Satpal

    2015-10-01

    Red-free light allows better detection of vascular lesions as this wavelength is absorbed by hemoglobin; however, the current gold standard for the detection and grading of diabetic retinopathy remains 7-field color fundus photography. The goal of this study was to compare the ability of 7-field fundus photography using red-free light to detect retinopathy lesions with corresponding images captured using standard 7-field color photography. Non-stereoscopic standard 7-field 30° digital color fundus photography and 7-field 30° digital red-free fundus photography were performed in 200 eyes of 103 patients with various grades of diabetic retinopathy ranging from mild to moderate non-proliferative diabetic retinopathy to proliferative diabetic retinopathy. The color images (n = 1,400) were studied with corresponding red-free images (n = 1,400) by one retina consultant (PV) and two senior residents training in retina. The various retinal lesions [microaneurysms, hemorrhages, hard exudates, soft exudates, intra-retinal microvascular anomalies (IRMA), neovascularization of the retina elsewhere (NVE), and neovascularization of the disc (NVD)] detected by all three observers in each of the photographs were noted followed by determination of agreement scores using κ values (range 0-1). Kappa coefficient was categorized as poor (≤0), slight (0.01-0.20), fair (0.2 -0.40), moderate (0.41-0.60), substantial (0.61-0.80), and almost perfect (0.81-1). The number of lesions detected by red-free images alone was higher for all observers and all abnormalities except hard exudates. Detection of IRMA was especially higher for all observers with red-free images. Between image pairs, there was substantial agreement for detection of hard exudates (average κ = 0.62, range 0.60-0.65) and moderate agreement for detection of hemorrhages (average κ = 0.52, range 0.45-0.58), soft exudates (average κ = 0.51, range 0.42-0.61), NVE (average κ = 0.47, range 0.39-0.53), and NVD

  15. Dental therapists in general dental practices: an economic evaluation.

    PubMed

    Beazoglou, Tryfon J; Lazar, Vickie F; Guay, Albert H; Heffley, Dennis R; Bailit, Howard L

    2012-08-01

    Dental access disparities are well documented and have been recognized as a national problem. Their major cause is the lack of reasonable Medicaid reimbursement rates for the underserved. Specifically, Medicaid reimbursement rates for children average 40 percent below market rates. In addition, most state Medicaid programs do not cover adults. To address these issues, advocates of better oral health for the underserved are considering support for a new allied provider--a dental therapist--capable of providing services at a lower cost per service and in low-income and rural areas. Using a standard economic analysis, this study estimated the potential cost, price, utilization, and dentist's income effects of dental therapists employed in general dental practices. The analysis is based on national general dental practice data and the broadest scope of responsibility for dental therapists that their advocates have advanced, including the ability to provide restorations and extractions to adults and children, training for three years, and minimum supervision. Assuming dental therapists provide restorative, extraction, and pulpal services to patients of all ages and dental hygienists continue to deliver all hygiene services, the mean reduction in a general practice costs ranges between 1.57 and 2.36 percent. For dental therapists treating children only, the range is 0.31 to 0.47 percent. The effects on price and utilization are even smaller. In addition, the effects on most dentists' gross income, hours of work, and net income are negative. The estimated economic impact of dental therapists in the United States on private dental practice is very limited; therefore, the demand for dental therapists by private practices also would probably be very limited. PMID:22855595

  16. Importance of Dental Records in Forensic Dental Identification

    PubMed Central

    Waleed, Petro; Baba, Feras; Alsulami, Salem; Tarakji, Bassel

    2015-01-01

    Introduction: The patient’s record maintains all the diagnostic information with regards to patients and contains valuable information that can be beneficial to the dentist as well as legal authorities during forensic human identification. Aim: Objective of the study was to compare dental records with an ideal dental record form, as well as to compare between dental records of private clinics and academic hospitals and to assess the awareness and the knowledge of the dentists regarding the maintenance of their dental records accurate for medico-legal purposes. Material and Methods: A comparative cross-sectional study between records kept in private clinics and academic teaching hospitals in Khartoum locality. Results: Our results showed that Students are more likely to encounter accurate dental records more than dentists in private clinics. In conclusion Students are more aware regarding medicolegal purposes of maintenance of dental records. Accurate maintenance of dental records is more among dental students. Therefore, private clinics encounter dental records as financial documents. PMID:25870492

  17. Photographic technology development project: Timber typing in the Tahoe Basin using high altitude panoramic photography

    NASA Technical Reports Server (NTRS)

    Ward, J. F.

    1981-01-01

    Procedures were developed and tested for using KA-80A optical bar camera panoramic photography for timber typing forest land and classifying nonforest land. The study area was the south half of the Lake Tahoe Basin Management Unit. Final products from this study include four timber type map overlays on 1:24,000 orthophoto maps. The following conclusions can be drawn from this study: (1) established conventional timber typing procedures can be used on panoramic photography if the necessary equipment is available, (2) The classification and consistency results warrant further study in using panoramic photography for timber typing; and (3) timber type mapping can be done as fast or faster with panoramic photography than with resource photography while maintaining comparable accuracy.

  18. A pilot study in the recovery and recognition of non-osseointegrated dental implants following cremation.

    PubMed

    Berketa, J; James, H; Marino, V

    2011-12-01

    Minimal dimensional changes in free standing dental implants when incinerated in a kiln to a temperature of 1125°C have been reported previously. However, in the same study colour changes were observed between commercially pure titanium and titanium alloy type of implants, with speculation that this change may be a useful distinguishing tool in cases requiring forensic identification. The present study was instigated to determine what changes occur following cremation to bone-supported dental implants placed within mandibles of sheep. A selection of dental implants was photographed and radiographed. They were then surgically placed in sheep mandibles and the entire sheep heads cremated in a commercial cremator. There was detachment of the dental implants from the mandible, which could have implications for scene recovery. Following retrieval and re-irradiating of the implants, image subtraction evaluation of the radiographs was recorded using Adobe(®) Photoshop.(®) As with the previous study there was slight oxidation of the implant surfaces leading to minor alteration of the images. There was, however, no gold crust colour change in the commercially pure titanium. Photography within the retrieved implants revealed the batch number within the Straumann™ implant was still visible, which could significantly add weight to the identification of deceased persons. PMID:22717912

  19. Comparison of Color Fundus Photography, Infrared Fundus Photography, and Optical Coherence Tomography in Detecting Retinal Hamartoma in Patients with Tuberous Sclerosis Complex

    PubMed Central

    Bai, Da-Yong; Wang, Xu; Zhao, Jun-Yang; Li, Li; Gao, Jun; Wang, Ning-Li

    2016-01-01

    Background: A sensitive method is required to detect retinal hamartomas in patients with tuberous sclerosis complex (TSC). The aim of the present study was to compare the color fundus photography, infrared imaging (IFG), and optical coherence tomography (OCT) in the detection rate of retinal hamartoma in patients with TSC. Methods: This study included 11 patients (22 eyes) with TSC, who underwent color fundus photography, IFG, and spectral-domain OCT to detect retinal hamartomas. TSC1 and TSC2 mutations were tested in eight patients. Results: The mean age of the 11 patients was 8.0 ± 2.1 years. The mean spherical equivalent was −0.55 ± 1.42 D by autorefraction with cycloplegia. In 11 patients (22 eyes), OCT, infrared fundus photography, and color fundus photography revealed 26, 18, and 9 hamartomas, respectively. The predominant hamartoma was type I (55.6%). All the hamartomas that detected by color fundus photography or IFG can be detected by OCT. Conclusion: Among the methods of color fundus photography, IFG, and OCT, the OCT has higher detection rate for retinal hamartoma in TSC patients; therefore, OCT might be promising for the clinical diagnosis of TSC. PMID:27174333

  20. Earth observation photography: Looking back 20 years after Skylab

    NASA Technical Reports Server (NTRS)

    Nicholson, James H.

    1992-01-01

    A committee of trained classroom teachers, backed by a volunteer team of technical experts and academic advisors has developed a program for earth science based on photographs obtained from low earth orbit. In selecting targeting objectives, immediate note was made of the fact nearly one generation (20 years) has passed since the United States' ambitious SKYLAB program was conducted. A critical part of those missions was the acquisition of earth photography using a six camera, multi-spectral camera system. This objective was systematically furthered through the term of three separate crew visits to the Space Station. Not merely an exercise in randomly photographing the Earth below, the purpose of the Earth Resource Experiment Package (EREP) was to determine what kind, and how much, photographic data could be acquired of the broad variety of Earth features witnessed on the mission's ground track. The collection of 35,000 photos produced by EREP represents the most complete coverage of Earth. However, it remains under used. GAS 324 intends to revisit, and to add a tier of relevancy to this inventory. The photography of GAS 324 should allow a direct examination and comparison of the changes in the globe in the last 20 years. format in both coverage and quality. The photogra phy acquired by CAN DO should allow a direct examination and comparison of the changes that have occured to the Globe in the last twenty years.

  1. High Speed Photography Of Wood Pulping In A Disc Refiner

    NASA Astrophysics Data System (ADS)

    Atack, D.; Clayton, D. L.; Quinn, A. E.; Stationwala, M. I.

    1985-02-01

    Some of the mechanisms involved in the reduction of wood chips to papermaking pulp in a commercial disc refiner have been determined by high speed photography. Flow patterns of pulp through the refiner, including an unexpected recirculation pattern, have been recorded. Cine-photography was also employed to show how wood chips are transported by a ribbon screw feeder into the refiner. Some aspects of photographing in a hostile environment are described. The following salient observations have been made during these studies. Chips and dilution water fall to the base of the feeder housing and are fed along it to the refiner eye, where the chips are reduced to coarse pulp. This coarse pulp proceeds through the breaker bars into the refining zone. Some pulp in the inner part of the refining zone flows back to the breaker bars along grooves of the stationary plates, giving rise to considerable recirculation. Pulp in the outer part of the refining zone moves radially outwards. For a short fraction of its passage through the refiner, most of the fibrous material is constrained to move in the direction of rotation of the moving plates. Some of this material is stapled momentarily in a tangential orientation across the bars of both sets of plates. The immobilized fibres are then subjected to the refining action between the relatively moving bars before being disgorged into the adjacent grooves.

  2. STS-114 Space Shuttle Discovery Performs Back Flip For Photography

    NASA Technical Reports Server (NTRS)

    2005-01-01

    Launched on July 26, 2005 from the Kennedy Space Center in Florida, STS-114 was classified as Logistics Flight 1. Among the Station-related activities of the mission were the delivery of new supplies and the replacement of one of the orbital outpost's Control Moment Gyroscopes (CMGs). STS-114 also carried the Raffaello Multi-Purpose Logistics Module and the External Stowage Platform-2. A major focus of the mission was the testing and evaluation of new Space Shuttle flight safety, which included new inspection and repair techniques. Upon its approach to the International Space Station (ISS), the Space Shuttle Discovery underwent a photography session in order to assess any damages that may have occurred during its launch and/or journey through Space. Discovery was over Switzerland, about 600 feet from the ISS, when Cosmonaut Sergei K. Kriklev, Expedition 11 Commander, and John L. Phillips, NASA Space Station officer and flight engineer photographed the spacecraft as it performed a back flip to allow photography of its heat shield. Astronaut Eileen M. Collins, STS-114 Commander, guided the shuttle through the flip. The photographs were analyzed by engineers on the ground to evaluate the condition of Discovery's heat shield. The crew safely returned to Earth on August 9, 2005. The mission historically marked the Return to Flight after nearly a two and one half year delay in flight after the Space Shuttle Columbia tragedy in February 2003.

  3. High-Speed Photography during Compression Testing Human Trabecular Bone

    NASA Astrophysics Data System (ADS)

    Thurner, Philipp; Langan, John; Erickson, Blake

    2005-03-01

    The mechanical properties of healthy and diseased bone are extensively studied. Most of this research is motivated by the immense costs in health care due to osteoporosis. To address the problem of assessing bone microarchitecture and concomitant microcracking behavior, we recently combined mechanical compression testing of trabecular bone with high-speed photography. In an exemplary study, we investigated healthy, osteoarthritic, and osteoporotic human vertebral trabecular bone. Bone samples were loaded along their principal load-bearing axis at high strain rates simulating boundary conditions as experienced in individuals during falls. Even at small global strains huge local deformations could be seen in the recorded high-speed photography frames. Moreover, strained trabeculae were seen to whiten with increasing strain, which could be associated with areas of high deformation using a motion energy filter. Presumably the effect seen is due to microcrack formation in these areas, similar to stress whitening in synthetic polymers. This hypothesis is currently tested applying en bloc microcrack staining and histology.

  4. Space Shuttle Large Format Camera Photography And Resource Management

    NASA Astrophysics Data System (ADS)

    Greer, Jerry D.

    1988-02-01

    In October, 1984, the Space Shuttle Challenger carrying the Itek Large Format Camera took 2134 photographs of the Earth's land, oceans, and clouds. In this experiment, the precision cartographic large format camera was used to take vertical aerial photographs on a strip of film made up of four different emulsions. An exceptionally cloudy weather system in North America and Europe caused most of the primary photography sites to be obscured. Many photographs were therefore taken of secondary sites. The United States Department of Agriculture, Forest Service participated in this experiment by identifying many photographic test sites in the United States. When the mission was flown, most of the National Forests selected were obscured by clouds. The Forest Service is interested in the potential uses of the photography in resource management. To the extent possible, the photographs of the National Forests areas have been evaluated. The imagery is suitable for some management activities and is currently being used. During the evaluation, all imagery worldwide, was examined, and a list of potential uses was developed. With increased use, more applications will be developed.

  5. The use of photography to record geologic data

    SciTech Connect

    McClay, P.L.

    1985-05-01

    Although photography is generally used today by geologists to record important data and features of interest, no strong effort has been made to systematically photo-document preliminary investigations and siting of critical facilities such as nuclear power plants, Liquified Natural Gas (LNG) terminals, or dams At a time when the safe siting of critical facilities is coming under ever closer scrutiny by regulatory agencies and the public, the importance and usefulness of photographic evidence and authentication is clear. Photography by no means replaces the accurate, detailed log or map. However, when used together, the photograph and graphic log or map can provide a clearer, more understandable representation of geologic data. This can be extremely important to the non-technical reviewer or decision maker. A simple method of presenting documentary photographs has been used for the proposed LNG facility at Little Cojo Bay, near Point Conception, California. This method combines both geologic data and photographic images through the use of clear mylar or acetate overlays.

  6. Computational photography with plenoptic camera and light field capture: tutorial.

    PubMed

    Lam, Edmund Y

    2015-11-01

    Photography is a cornerstone of imaging. Ever since cameras became consumer products more than a century ago, we have witnessed great technological progress in optics and recording mediums, with digital sensors replacing photographic films in most instances. The latest revolution is computational photography, which seeks to make image reconstruction computation an integral part of the image formation process; in this way, there can be new capabilities or better performance in the overall imaging system. A leading effort in this area is called the plenoptic camera, which aims at capturing the light field of an object; proper reconstruction algorithms can then adjust the focus after the image capture. In this tutorial paper, we first illustrate the concept of plenoptic function and light field from the perspective of geometric optics. This is followed by a discussion on early attempts and recent advances in the construction of the plenoptic camera. We will then describe the imaging model and computational algorithms that can reconstruct images at different focus points, using mathematical tools from ray optics and Fourier optics. Last, but not least, we will consider the trade-off in spatial resolution and highlight some research work to increase the spatial resolution of the resulting images. PMID:26560916

  7. Use of aerial photography to inventory aquatic vegetation

    USGS Publications Warehouse

    Schloesser, Donald W.; Brown, Charles L.; Manny, Bruce A.

    1988-01-01

    This study demonstrates the feasibility of using low-altitude aerial photography to inventory submersed macrophytes in the connecting channels of the Great Lakes. For this purpose, we obtained aerial color transparencies and collateral ground truth information about submersed vegetation at 160 stations within four study sites in the St. Clair and Detroit rivers, September 17 to October 4, 1984. Photographs were interpreted by five test subjects to determine with what accuracy they could detect beds of submersed macrophytes, and the precision of delineating the extent of such vegetation beds. The interpreters correctly determined the presence or absence of vegetation 80% of the time (range 73-86%). Differences between individuals were statistically significant. Determination of the presence or absence of macrophytes depended partly on their relative abundance and water clarity. Analysis of one photograph from each of the four study sites revealed that photointerpreters delineated between 35 and 75 ha of river bottom covered by vegetation. This wide range indicates that individuals should be tested to assess their relative capability and be trained before they are employed to delineate plant beds in large-scale inventories. Within limits, low-altitude aerial photography, combined with collateral ground truth information, can be used to determine the presence or absence and delineate the extent of submersed macrophytes in connecting channels of the Great Lakes.

  8. Laser illuminated high speed photography of energetic materials

    SciTech Connect

    Dosser, L.R.; Reed, J.W.; Stark, M.A.

    1988-01-01

    The evaluation of the properties of energetic materials, such as burn rate and ignition, is of primary importance in understanding their reactions and how devices containing them perform their function. We have recently applied high speed photography at rates of up to 20,000 images per second to this problem. When a copper vapor laser is synchronized to the high speed camera, laser illuminated images can be recorded that detail the performance of a component in a manner never before possible. The copper vapor laser used for these experiments had an average power of 30 watts, and produced pulses at a rate of up to 10 kHz. The 30 nanosecond pulsewidth of the laser essentially freezes all motion in the functioning componment, thus providing stop-action pictures at a rate of up to 10,000 per second. Each laser pulse has a peak power of approximately 170,000 watts which provides ample illumination for the high speed photography. Several energetic materials and components studied include the pyrotechnic Ti/2B, a pyrotechnic torch, laser ignition of high explosives, and a functioning igniter.

  9. Chapter 20: neurological illustration from photography to cinematography.

    PubMed

    Aubert, Geneviève

    2010-01-01

    This chapter explores iconography in neurology from the birth of photography up to the early medical applications of cinematography before 1914. The important visual part of neurological diagnosis explains why these techniques were adopted very early by neurologists. Duchenne published the first medical book illustrated with photographs of patients. The first and most famous photographic laboratory was created in Charcot's department, at the Salpêtrière in Paris, under the direction of Albert Londe. Londe published the first book dedicated to medical photography. The physiologist Marey and the photographer Muybridge, in association with neurologists, played key roles in the development of chronophotography and cinematography. Germany was the first country to welcome cinematography in a neurology department. Independently, neurologists began to film patients in other countries in Europe and in America. In 1905, Arthur Van Gehuchten (1861-1914), Belgian anatomist and neurologist, began systematically to film neurologic patients, with the intention of building up a complete neurological iconographic collection. This collection has survived and has been restored in the laboratory of the Royal Belgian Film Archive where the films are now safely stored in their vaults. PMID:19892123

  10. Dental Enamel Defects and Celiac Disease

    MedlinePlus

    ... Nutrition Home : Dental Enamel Defects and Celiac Disease Dental Enamel Defects and Celiac Disease Celiac disease manifestations ... affecting any organ or body system. One manifestation—dental enamel defects—can help dentists and other health ...

  11. Dental problems in athletes.

    PubMed

    Inouye, Jill; McGrew, Chris

    2015-01-01

    Orofacial injuries and diseases occur in athletes, and they may not always have access to dentists. Therefore team physicians should be aware of the common injuries and initial management. Treatment of dental injuries will depend on whether the teeth are primary or permanent. The most common type of fracture is crown fracture, but there are other dental injuries that can lead to future complications if not treated promptly and monitored closely. Tooth avulsions need to be handled properly, and athletes should see a dentist as soon as possible. Despite the urgency of some injuries, other orofacial injuries or diseases, such as lacerations and caries, should not be overlooked. Proper education and use of mouth guards can assist athletes in reducing their risk of orofacial injuries. PMID:25574879

  12. Dental Assisting Education in California.

    ERIC Educational Resources Information Center

    California State Dept. of Education, Sacramento. Bureau of Industrial Education.

    A survey of 22 dental assisting programs showed an average of 1,124 hours of instruction in dental assisting for 15 four-semester, 955 for three three-semester, and 1,042 for four two-semester programs. The average instructional hours for the four-semester programs were 48 in introduction to dental assisting, 179 in the life sciences, 221 in the…

  13. [Biocompatibility of dental amalgam].

    PubMed

    Missias, P

    1990-10-01

    The purpose of the present review was to present a detailed description of those current scientific results and opinions relative to the biocompatibility of dental amalgam. The first section of the percent review to the pulpar reactions caused by amalgam fillings, especially when no protective base has been used, while the second part concerns itself with the biocompatibility of the dental amalgam per se. Specifically, reference is made to: a) the adverse reactions due to amalgam fillings both on the patient's physiological system and on the dentist's employing the material under consideration. b) those investigation results bearing a relation on the amount of mercury liberated during the amalgam filling procedures, i.e., mixing, condensation, finishing and polishing and/or removal of old amalgam fillings. c) Liberation of mercury, as well as metallic ions in the patients mouth cavity during chewing and/or during the process of intrabuccal galvanization and corrosion, and d) on the amount of mercury traced in the blood and urine of the patient following amalgam fillings. No conclusive evidence on any adverse reactions on the patient's health, attributable to the liberation of mercury from amalgam fillings, could be presented by the scientific investigations under consideration. Moreover, the number of cases reported on toxic reactions due to dental amalgam is negligible compared to the immense number of amalgam fillings performed in practice. It merits mentioning in this connection, however, the fact that the total amount of mercury attained by the patient from any other source, in conjunction with that liberated from amalgam fillings, could by all means contribute to a number of toxic reactions on the patient's health in general. Conclusively, one could state without reservations, that dental amalgam fillings per se are by and large free of toxic reactions on the patient, based on current scientific observations. Mentioning is finally made on several simple but

  14. Fluorescence of dental porcelain.

    PubMed

    Monsénégo, G; Burdairon, G; Clerjaud, B

    1993-01-01

    This study of the fluorescence of natural enamel and of dental ceramics shows the fluorescence of ceramics not containing rare earths decreases when the color saturation increases; the fluorescence of samples of the same shade guide are not homogenous; some guides show a strong green fluorescence; and two shade guides of the same origin can present completely different fluorescence. The cementing medium can affect the fluorescence of a ceramic prosthesis. PMID:8455155

  15. Dental Treatment Abuse

    PubMed Central

    Ataide, Ida De Noronha De; Krishnan, Ramesh; Pavaskar, Rajdeep

    2014-01-01

    These case reports highlight dental treatment abuse performed by a quack on children. The anterior teeth of these children were metal capped using cement, which were otherwise healthy. The treatment was done on children without parental consent by a quack from Denmark who gave the reason as for resolving proclination of upper permanent incisors. The unanatomic, unaesthetic metal caps were removed after the child reported to the Department of Pedodontics and Preventive Dentistry. PMID:25177645

  16. Dental digital radiography.

    PubMed

    Moore, William S

    2002-05-01

    Digital images offer tremendous advantages to dentistry in terms of the potential for lower exposure to patients, absence of darkroom or processing problems, convenience of image enhancement techniques and capacity for remote teledentistry. Digital systems are now able to acquire all types of images including panoramic and cephalometric. As technology continues to improve they may ultimately replace film as the medium of choice for dental imaging. PMID:12046403

  17. Dental treatment abuse.

    PubMed

    Chalakkal, Paul; Ataide, Ida De Noronha De; Krishnan, Ramesh; Pavaskar, Rajdeep

    2014-07-01

    These case reports highlight dental treatment abuse performed by a quack on children. The anterior teeth of these children were metal capped using cement, which were otherwise healthy. The treatment was done on children without parental consent by a quack from Denmark who gave the reason as for resolving proclination of upper permanent incisors. The unanatomic, unaesthetic metal caps were removed after the child reported to the Department of Pedodontics and Preventive Dentistry. PMID:25177645

  18. Are dental radiographs safe?

    PubMed

    Abbott, P

    2000-09-01

    Dental patients are often aware that radiation has the potential to harm them but they do not usually understand how or why and what potential harmful effects may arise from dental radiographs. The potential for undesirable effects must be balanced against the benefits obtained from radiographs. Dentists should address the concerns of patients who question the need for radiographs and allow them to make an informed decision. Data are available that relate radiation exposure levels from medical and dental radiographs to normal background exposure levels and allow comparisons with everyday risks in life. Recognized radiation authorities publish guidelines to help dentists with their use of radiographs, although, due to the time lag associated with testing and the publication of results, some of the published data may not always be entirely relevant to currently used X-ray machines and techniques. Dentists also have professional obligations not only to limit the use of radiographs to potentially beneficial situations but also to take good quality diagnostic radiographs, to limit the doses used, to use good radiation safety measures and to use modern equipment to achieve the best possible films. Radiographs must then be properly developed and viewed under appropriate conditions to gain the maximum possible diagnostic information from each exposure. PMID:11062940

  19. Dental injuries during general anaesthesia.

    PubMed

    Chadwick, R G; Lindsay, S M

    1996-04-01

    Although most anaesthetic textbooks cite dental injury as a complication of endotracheal intubation few studies have examined the extent and nature of the problem. Such damage however, formed the basis for one-third of all confirmed or potential anaesthetic claims notified to the Medical Protection Society between 1977 and 1986. This article seeks to explore the extent of the problem, outline predisposing factors, summarise current prophylactic measures and make recommendations to reduce the overall incidence. Increased awareness of the problem, by both anaesthetists and dental surgeons, coupled with appropriate prophylactic measures may result in a reduced incidence of dental injury arising from general anaesthesia. Given the high incidence of dental damage we recommend that all patients undergoing a surgical operation under endotracheal intubation should have a pre-operative dental check wherever possible. Clearly, the first dental examination would be conducted by an anaesthetist familiar with the predisposing factors. Where he/she considers there to be a higher than average risk of dental damage occurring during intubation a more specialised examination should be conducted by a dental surgeon. It may, where appropriate, be possible for remedial dental treatment to be carried out and customised mouth guards to be constructed prior to the operation. Obviously such recommendations have certain financial implications and would have to be subject to controlled cost-benefit analysis before their widespread application. PMID:8935289

  20. Resuscitation in the dental practice.

    PubMed

    Jevon, P

    2016-03-11

    The Resuscitation Council (UK) published new resuscitation guidelines in October 2015. The aim of this article is to understand these new guidelines and how dental practices should implement them. A 'resuscitation in the dental practice poster' has been designed which incorporates the new Resuscitation Council (UK) adult basic life support algorithm. This poster, endorsed by the British Dental Association, is included with this issue of the British Dental Journal. Further copies can be downloaded from: https://www.walsallhealthcare.nhs.uk/Data/Sites/1/media/documents/health-and-safety/resus.pdf. PMID:26964602

  1. Harvesting dental stem cells - Overview.

    PubMed

    Sunil, P M; Manikandan, Ramanathan; Muthumurugan; Yoithapprabhunath, Thukanayakanpalayam Ragunathan; Sivakumar, Muniapillai

    2015-08-01

    Dental stem cells have recently become one of the widely researched areas in dentistry. Ever since the identification of stem cells from various dental tissues like deciduous teeth, dental papilla, periodontal ligament and third molars, storing them for future use for various clinical applications was being explored. Dental stem cells were harvested and isolated using various techniques by different investigators and laboratories. This article explains the technical aspects of preparing the patient, atraumatic and aseptic removal of the tooth and its safe transportation and preservation for future expansion. PMID:26538883

  2. Computerized Dental Injection Fear Treatment

    PubMed Central

    Heaton, L.J.; Leroux, B.G.; Ruff, P.A.; Coldwell, S.E.

    2013-01-01

    One in four adults reports a clinically significant fear of dental injections, leading many to avoid dental care. While systematic desensitization is the most common therapeutic method for treating specific phobias such as fear of dental injections, lack of access to trained therapists, as well as dentists’ lack of training and time in providing such a therapy, means that most fearful individuals are not able to receive the therapy needed to be able to receive necessary dental treatment. Computer Assisted Relaxation Learning (CARL) is a self-paced computerized treatment based on systematic desensitization for dental injection fear. This multicenter, block-randomized, dentist-blind, parallel-group study conducted in 8 sites in the United States compared CARL with an informational pamphlet in reducing fear of dental injections. Participants completing CARL reported significantly greater reduction in self-reported general and injection-specific dental anxiety measures compared with control individuals (p < .001). Twice as many CARL participants (35.3%) as controls (17.6%) opted to receive a dental injection after the intervention, although this was not statistically significant. CARL, therefore, led to significant changes in self-reported fear in study participants, but no significant differences in the proportion of participants having a dental injection (ClinicalTrials.gov, NCT00609648). PMID:23690352

  3. Harvesting dental stem cells - Overview

    PubMed Central

    Sunil, P. M.; Manikandan, Ramanathan; Muthumurugan; Yoithapprabhunath, Thukanayakanpalayam Ragunathan; Sivakumar, Muniapillai

    2015-01-01

    Dental stem cells have recently become one of the widely researched areas in dentistry. Ever since the identification of stem cells from various dental tissues like deciduous teeth, dental papilla, periodontal ligament and third molars, storing them for future use for various clinical applications was being explored. Dental stem cells were harvested and isolated using various techniques by different investigators and laboratories. This article explains the technical aspects of preparing the patient, atraumatic and aseptic removal of the tooth and its safe transportation and preservation for future expansion. PMID:26538883

  4. Volga shallow offing dynamics investigation based on space photography

    NASA Astrophysics Data System (ADS)

    Kovalev, E. E.

    Volga mouth region is investigated much better, than sea mouths of other river in Russia. In spite of the fact, not enough attention was devoted to Volga shallow offing. Volga shallow offing covers area about 9,3 ths. sq. km and has great significance for Caspian sea fish industry, because environmental conditions of this region and neighboring shallows of Northern Caspian Sea are determinative for passage, spawning and young fish growth of valuable sorts of fish. Insufficient investigation of Volga shallow offing is caused as by difficulty of access to this region through small depths (1 - 2 m) and intensive vegetation, so by data deficiency. Data deficiency notably intensified during recent 10 - 15 years, when significant reduction of hydro-meteorological investigations in Volga mouth area occurred. Gradual accumulation of on-site data, development of new technologies of map material analysis and space photography data processing allows to expect new scientific and application results. The purpose of our investigation concludes in determination of space-time mechanism of hydro-meteorological processes in Volga shallow offing based on space photography materials. Main results of our investigation can be summarized in following basic statements: (1) The most efficient method of Volga shallow offing investigation appears to be combined application of space photography data and on-site materials. (2) Electronic atlas of Volga shallow offing photomaps for the period of 1975 to 1997 yrs. is created. (3) Maps of above-water flora of Volga shallow offing for 1975 and 1997 yrs are created. (4) Electronic atlas of streams in Volga shallow offing for the period of 1975 to 1997 yrs. is created. On basis of it four maps of drain streams at Volga shallow offing are created. (5) Landscape zoning of Volga shallow offing is made and most active and passive regions are determined depending on drain streams and water vegetation. (6) It is shown, that development of Volga shallow

  5. Let's go outside: using photography to explore values and culture in mental health nursing.

    PubMed

    Aranda, K; de Goeas, S; Davies, S; Radcliffe, M; Christoforou, A

    2015-06-01

    Creative and imaginative approaches to mental healthcare education are known to help students explore emotions, empathy and others' experiences, as well as address ambivalence and ambiguity. Very few studies in mental health nursing education specifically utilise photography as a participatory pedagogic tool, with even fewer utilising photography to explore understandings of culture, values and diversity. Photography makes visible complex, collaborative forms of learning and previously unidentified, unarticulated ideas about culture and values. Photography as a critical pedagogic method helps develop critical, politicized understandings of culture and values. Increasing culturally diverse populations means complex and conflicting values have become a common feature in mental health nursing. In education the need to critically examine such topics necessitates creative and engaging pedagogy, and visual methods are readily acknowledged as such. Yet while many studies advocate and demonstrate the value of art-based methods in student learning, very few studies in mental health nursing specifically utilize photography as a participatory pedagogic tool, and fewer still use photography to explore understandings of culture, values and diversity. In this paper, we discuss a qualitative study where mental health nursing students used photography to create images in order to explore their own and often dominant culture and attendant values. Findings suggest that photography makes visible situated, relational and collaborative learning, and surfaces previously unidentified, unarticulated ideas about culture and values. These practices mimic important processes central to mental health nursing practice and contemporaneous understandings of diverse cultures. We argue that photography provides an important resource with which to unearth subjugated knowledge, promote critical understandings of culture and values, and thereby help address inequalities in mental health care. PMID

  6. Clinical Guidelines. Dental Hygiene Program.

    ERIC Educational Resources Information Center

    Branson, Bonnie

    This manual contains information concerning the policies and procedures of the Southern Illinois University-Carbondale Dental Hygiene Clinic. The manual is presented in a question/answer format for the information and convenience of dental hygiene students in the program, and is intended to answer their questions concerning clinical policies and…

  7. Dental Chairside Technique. Student's Manual.

    ERIC Educational Resources Information Center

    Apfel, Maura; Weaver, Trudy Karlene

    This manual is part of a series dealing with skills and information needed by students in dental assisting. The individualized student materials are suitable for classroom, laboratory, or cooperative training programs. This student manual contains four units covering the following topics: local anesthesia; dental office emergencies; oral hygiene;…

  8. Dentistry and Dental Hygiene Handbook.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Office of the Professions.

    A reference guide to laws, rules, and regulations that govern dentistry and dental hygiene practice in New York State is presented. In addition to identifying licensing requirements/procedures for dentists and dental hygienists, general provisions of Title VIII of the Education Law are covered, along with state management, professional misconduct,…

  9. Emerging Dental Specialties and Ethics.

    PubMed

    Brown, Ronald S; Mashni, Michael

    2015-01-01

    This paper discusses ethical dimensions related to the formal recognition of emerging dental specialties. It explores several issues related to the potential emergence of several new dental specialty areas. There are good reasons that dentistry should open the door to these new specialties, and patients would benefit. The ethical considerations for and against formal acceptance are examined. PMID:26697653

  10. Dentistry and Dental Hygiene Handbook.

    ERIC Educational Resources Information Center

    New York State Education Dept., Albany. Office of the Professions.

    The handbook contains laws, rules, and regulations of the New York State Education Department that govern dentistry and dental hygiene practice in the state. It describes licensure requirements and includes complete application forms and instructions for obtaining license and first registration as a dentist and dental hygienist. Applicants are…

  11. Dosimetric considerations in dental applications

    NASA Technical Reports Server (NTRS)

    Goble, J. C.

    1978-01-01

    The integration of the Lixiscope into dental procedures was studied and compared with conventional dental radiographic techniques. It was found that through the use of intraoral sealed sources in conjunction with microchannel plate technology, the Lixiscope gives increased diagnostic information with decreased radiation dosage.

  12. Health Instruction Packages: Dental Assisting.

    ERIC Educational Resources Information Center

    McEnery, Paula

    Text, illustrations, and exercises are utilized in this set of four learning modules to instruct dental assisting students in various office skills. The first module, "Dental Office Telephone Techniques," examines the qualities of a good telephone voice and demeanor and provides guidelines for taking a message and handling various telephone…

  13. Dental Health: The Basic Facts

    MedlinePlus

    ... after breakfast and before bedtime n Using a tooth-paste with fluoride in it n Flossing daily n Using a tongue scraper or brushing the tongue daily Dental Health | 1 n ... reporting any bleeding gums, tooth or jaw pain or tooth sensitivity Routine dental ...

  14. Dental Laboratory Technology Program Guide.

    ERIC Educational Resources Information Center

    Georgia Univ., Athens. Dept. of Vocational Education.

    This program guide contains the standard dental laboratory technology curriculum for both diploma programs and associate degree programs in technical institutes in Georgia. The curriculum encompasses the minimum competencies required for entry-level workers in the dental laboratory technology field. The general information section contains the…

  15. Investigation Of Vapor Explosion Mechanisms Using High Speed Photography

    NASA Astrophysics Data System (ADS)

    Armstrong, Donn R.; Anderson, Richard P.

    1983-03-01

    The vapor explosion, a physical interaction between hot and cold liquids that causes the explosive vaporization of the cold liquid, is a hazard of concern in such diverse industries as metal smelting and casting, paper manufacture, and nuclear power generation. Intensive work on this problem worldwide, for the past 25 years has generated a number of theories and mechanisms proposed to explain vapor explosions. High speed photography has been the major instrument used to test the validity of the theories and to provide the observations that have lead to new theories. Examples are given of experimental techniques that have been used to investigate vapor explosions. Detailed studies of specific mechanisms have included microsecond flash photograph of contact boiling and high speed cinematography of shock driven breakup of liquid drops. Other studies looked at the explosivity of various liquid pairs using cinematography inside a pulsed nuclear reactor and x-ray cinematography of a thermite-sodium interaction.

  16. Picturing the Wheatbelt: exploring and expressing place identity through photography.

    PubMed

    Sonn, Christopher C; Quayle, Amy F; Kasat, Pilar

    2015-03-01

    Community arts and cultural development is a process that builds on and responds to the aspirations and needs of communities through creative means. It is participatory and inclusive, and uses multiple modes of representation to produce local knowledge. 'Voices' used photography and photo elicitation as the medium for exploring and expressing sense of place among Aboriginal and non-Indigenous children, young people and adults in four rural towns. An analysis of data generated by the project shows the diverse images that people chose to capture and the different meanings they afforded to their pictures. These meanings reflected individual and collective constructions of place, based on positive experiences and emotions tied to the natural environment and features of the built environment. We discuss community arts and cultural development practice with reference to creative visual methodologies and suggest that it is an approach that can contribute to community psychology's empowerment agenda. PMID:25325930

  17. Fast image processing with a microcomputer applied to speckle photography

    NASA Astrophysics Data System (ADS)

    Erbeck, R.

    1985-11-01

    An automated image recognition system is described for speckle photography investigations in fluid dynamics. The system is employed for characterizing the pattern of interference fringes obtained using speckle interferometry. A rotating ground glass serves as a screen on which laser light passing through a specklegraph plate, the flow and a compensation plate (CP) is shone to produce a compensated Young's pattern. The image produced on the ground glass is photographed by a video camera whose signal is digitized and processed through a microcomputer using a 6502 CPU chip. The normalized correlation function of the intensity is calculated in two directions of the recorded pattern to obtain the wavelength and the light deflection angle. The system has a capability of one picture every two seconds. Sample data are provided for a free jet of CO2 issuing into air in both laminar and turbulent form.

  18. NEW HORIZONS FOR THE NATIONAL HIGH-ALTITUDE PHOTOGRAPHY PROGRAM.

    USGS Publications Warehouse

    Bermel, Peter F.

    1983-01-01

    The National High-Altitude Photography Program (NHAP) is a multi-Federal agency activity to acquire uniform imagery for the establishment of a national high-altitude photographic data base. Since the inception of NHAP in 1980, black-and-white and color infrared stereoscopic imagery has been acquired for about 50% of the 3,000,000 square miles in the conterminous United States. An additional 40% of the 48-State area is under contract to private aerial survey firms, and the sixth and final contract to achieve complete once-over coverage will be awarded early in 1985. Extensive use has been made of the newly established data base. The participating agencies have begun studies to define the requirements for a maintenance program which would provide cyclic coverage of the conterminous United States and imagery for specific agency needs.

  19. Application of multispectral color photography to flame flow visualization

    NASA Technical Reports Server (NTRS)

    Stoffers, G.

    1979-01-01

    For flames of short duration and low intensity of radiation a spectroscopical flame diagnostics is difficult. In order to find some other means of extracting information about the flame structure from its radiation, the feasibility of using multispectral color photography was successfully evaluated. Since the flame photographs are close-ups, there is a considerable parallax between the single images, when several cameras are used, and additive color viewing is not possible. Each image must be analyzed individually, it is advisable to use color film in all cameras. One can either use color films of different spectral sensitivities or color films of the same type with different color filters. Sharp cutting filters are recommended.

  20. My Life in Nuclear Physics, Photography, and Opera

    NASA Astrophysics Data System (ADS)

    Hintz, Norton M.

    2012-06-01

    I sketch my life as an experimental nuclear physicist, beginning as a graduate student at Harvard University from 1948 to 1951, then as a postdoctoral fellow at the Cavendish Laboratory from 1951 to 1952, and finally as a faculty member at the University of Minnesota from 1952 until my retirement in 1991. I also carried out research at the Niels Bohr Institute in Copenhagen, Indiana University, and Los Alamos National Laboratory, and I participated in a number of summer schools and international conferences on nuclear physics. I also have worked in photography and opera. Over the years, I met and collaborated with many people in many walks of life who became friends for life.

  1. Remote measurement of turbidity and chlorophyll through aerial photography

    NASA Technical Reports Server (NTRS)

    Schwebel, M. D.; James, W. P.; Clark, W. J.

    1973-01-01

    Studies were conducted utilizing six different film and filter combinations to quantitatively detect chlorophyll and turbidity in six farm ponds. The low range of turbidity from 0-35 JTU correlated well with the density readings from the green band of normal color film and the high range above 35 JTU was found to correlate with density readings in the red band of color infrared film. The effect of many of the significant variables can be reduced by using standardized procedures in taking the photography. Attempts to detect chlorophyll were masked by the turbidity. The ponds which were highly turbid also had high chlorophyll concentrations; whereas, the ponds with low turbidity also had low chlorophyll concentrations. This prevented a direct correlation for this parameter. Several suggested approaches are cited for possible future investigations.

  2. Using Digitized Handheld Space Shuttle Photography for Terrain Visualization

    NASA Technical Reports Server (NTRS)

    Eckardt, F. D.; Wilkinson, M. J.; Lulla, K. P.

    2000-01-01

    Digital terrain models are becoming increasingly available and are readily generated at a whole range of scales. However, the lack of realistic colour and tone in images of terrains remains a problem. Realistic colour and tone are very desirable attributes because they contribute significantly to a powerful visualization of landscapes, both for scientists (Kam's ref) and for the general public. But these attributes are generally still unavailable because few sensors, air- or space-borne, provide true colour, and even fewer do so at a realistic cost. The exception is the growing and accessible archive of US Space Shuttle photography which provides a wealth of potential data suited for more realistic visualization of landscapes.

  3. Methodology of high-resolution photography for mural condition database

    NASA Astrophysics Data System (ADS)

    Higuchi, R.; Suzuki, T.; Shibata, M.; Taniguchi, Y.

    2015-08-01

    Digital documentation is one of the most useful techniques to record the condition of cultural heritage. Recently, high-resolution images become increasingly useful because it is possible to show general views of mural paintings and also detailed mural conditions in a single image. As mural paintings are damaged by environmental stresses, it is necessary to record the details of painting condition on high-resolution base maps. Unfortunately, the cost of high-resolution photography and the difficulty of operating its instruments and software have commonly been an impediment for researchers and conservators. However, the recent development of graphic software makes its operation simpler and less expensive. In this paper, we suggest a new approach to make digital heritage inventories without special instruments, based on our recent our research project in Üzümlü church in Cappadocia, Turkey. This method enables us to achieve a high-resolution image database with low costs, short time, and limited human resources.

  4. Absorbing New Subjects: Holography as an Analog of Photography

    NASA Astrophysics Data System (ADS)

    Johnston, Sean F.

    2006-05-01

    I discuss the early history of holography and explore how perceptions, applications, and forecasts of the subject were shaped by prior experience. I focus on the work of Dennis Gabor (1900 1979) in England,Yury N. Denisyuk (b. 1924) in the Soviet Union, and Emmett N. Leith (1927 2005) and Juris Upatnieks (b. 1936) in the United States. I show that the evolution of holography was simultaneously promoted and constrained by its identification as an analog of photography, an association that influenced its assessment by successive audiences of practitioners, entrepreneurs, and consumers. One consequence is that holography can be seen as an example of a modern technical subject that has been shaped by cultural influences more powerfully than generally appreciated. Conversely, the understanding of this new science and technology in terms of an older one helps to explain why the cultural effects of holography have been more muted than anticipated by forecasters between the 1960s and 1990s.

  5. Schlieren photography to study sound interaction with highly absorbing materials.

    PubMed

    Declercq, Nico F; Degrieck, Joris; Leroy, Oswald

    2005-06-01

    Strong absorption of sound is often caused by the conversion of sound energy into heat. When this happens, it is not possible to study the interaction of sound with the absorbing material by means of reflected sound characteristics, because there is no reflected sound. Detecting for example the distance that sound travels in a strongly absorbing material, can be done by heat detection systems. However, the presence of temperature detectors in such materials interferes with the sound field and is therefore not really suitable. Infrared measurements are a possible option. Another option is the use of Schlieren photography for simultaneous visualization of sound and heat. This technique is briefly outlined with a 3 MHz sound beam incident on a highly absorbing sponge. PMID:15950023

  6. Duchenne De Boulogne: a pioneer in neurology and medical photography.

    PubMed

    Parent, André

    2005-08-01

    Guillaume-Benjamin-Amand Duchenne was born 200 years ago in Boulogne-sur-Mer (Pas-de-Calais, France). He studied medicine in Paris and became a physician in 1831. He practiced general medicine in his native town for about 11 years and then returned to Paris to initiate pioneering studies on electrical stimulation of muscles. Duchenne used electricity not only as a therapeutic agent, as it was commonly the case earlier in the 19th century, but chiefly as a physiological investigation tool to study the anatomy of the living body. Without formal appointment he visited hospital wards across Paris searching for rare cases of neuromuscular disorders. He built a portable electrical device that he used to functionally map all bodily muscles and to study their coordinating action in health and disease. He gave accurate descriptions of many neuromuscular disorders, including pseudohypertrophic muscular dystrophy to which his name is still attached (Duchenne muscular dystrophy). He also invented a needle system (Duchenne's histological harpoon) for percutaneous sampling of muscular tissue without anesthesia, a forerunner of today's biopsy. Duchenne summarized his work in two major treatises entitled De l'électrisation localisée (1855) and Physiologie des mouvements (1867). Duchenne's iconographic work stands at the crossroads of three major discoveries of the 19th century: electricity, physiology and photography. This is best exemplified by his investigation of the mechanisms of human physiognomy in which he used localized faradic stimulation to reproduce various forms of human facial expression. The album that complements his book on this issue is considered a true incunabulum of photography. Duchenne de Boulogne, a shy but hard-working, acute and ingenious observer, became one of most original clinicians of the 19th century. He died in Paris in 1875. PMID:16225184

  7. Mapping Urban Ecosystem Services Using High Resolution Aerial Photography

    NASA Astrophysics Data System (ADS)

    Pilant, A. N.; Neale, A.; Wilhelm, D.

    2010-12-01

    Ecosystem services (ES) are the many life-sustaining benefits we receive from nature: e.g., clean air and water, food and fiber, cultural-aesthetic-recreational benefits, pollination and flood control. The ES concept is emerging as a means of integrating complex environmental and economic information to support informed environmental decision making. The US EPA is developing a web-based National Atlas of Ecosystem Services, with a component for urban ecosystems. Currently, the only wall-to-wall, national scale land cover data suitable for this analysis is the National Land Cover Data (NLCD) at 30 m spatial resolution with 5 and 10 year updates. However, aerial photography is acquired at higher spatial resolution (0.5-3 m) and more frequently (1-5 years, typically) for most urban areas. Land cover was mapped in Raleigh, NC using freely available USDA National Agricultural Imagery Program (NAIP) with 1 m ground sample distance to test the suitability of aerial photography for urban ES analysis. Automated feature extraction techniques were used to extract five land cover classes, and an accuracy assessment was performed using standard techniques. Results will be presented that demonstrate applications to mapping ES in urban environments: greenways, corridors, fragmentation, habitat, impervious surfaces, dark and light pavement (urban heat island). Automated feature extraction results mapped over NAIP color aerial photograph. At this scale, we can look at land cover and related ecosystem services at the 2-10 m scale. Small features such as individual trees and sidewalks are visible and mappable. Classified aerial photo of Downtown Raleigh NC Red: impervious surface Dark Green: trees Light Green: grass Tan: soil

  8. Condor TAC: EO/IR tactical aerial reconnaissance photography system

    NASA Astrophysics Data System (ADS)

    Petrushevsky, Vladimir; Tsur, David

    2012-06-01

    Based on the experience gained with the Condor2 long-range oblique photography (LOROP) camera, ELOP is expanding its airborne reconnaissance product line with the Condor TAC tactical photography system. The latter was designed for overflight imaging of extended areas from a fighter or special mission aircraft, at day and night. The Condor TAC is mounted in an aerodynamically shaped pod and can operate in wide envelope of flight altitude and speed. Besides the camera, the pod contains mission management and video processing unit (MVU), solid state recorder (SSR), wide-band data link (DL) for real-time imagery transmission, and two environmental control units (ECU). Complex multi-segment optical windows were successfully developed for the system. The camera system design is modular and highly flexible. Two independent imaging payload modules are mounted inside a gimbal system. Each of the modules is equipped with a strap-down IMU, and may carry a cluster of cameras or a single large camera with gross weight up to 35 kg. The payload modules are interchangeable, with an identical interface to the gimbal. The modularity and open architecture of the system facilitate its adaptation to various operational requirements, as well as allow easy and relatively non-expensive upgrades and configuration changes. In the current configuration, both EO and IR payload modules are equipped with a combination of longer focal length cameras for bi-directional panoramic scan at medium and high flight altitudes, and shorter focal length cameras for fixed wide angle coverage at low altitudes. All the camera types are equipped with standard format, off-the-shelf area detector arrays. Precise motion compensation is achieved by calibrated back-scan mirrors.

  9. Orientale Basin deposits (Riccioli area) in Apollo 16 earthshine photography, part E

    NASA Technical Reports Server (NTRS)

    Lloyd, D. D.; Head, J. W.

    1972-01-01

    Interpretations of photography of Orientale Basin deposits obtained under earthshine illumination conditions during the Apollo 16 mission are presented. Although the quality of these photographs is less than that obtainable in sunshine, these regions are in the dark during Apollo missions because of the locations of the Apollo landing sites. Photography of these regions under different lighting geometry and from different viewpoints is therefore a useful addition to previous photographic data. Oblique photography was obtained of Riccioli Crater and adjacent areas, which lie northeast of the Orientale Basin.

  10. An investigation to improve selenodetic control through surface and orbital lunar photography

    NASA Technical Reports Server (NTRS)

    Sweet, H. J., III

    1970-01-01

    The use of lunar surface photography to achieve the photogrammetric transfer of available selenographic coordinates from future lunar landing sites to neighboring, photoidentifiable features was investigated. It can be implied from the procedures developed that overhead photography, were it available, could be utilized and would provide a material strengthening of the total solution. By the methodic selection of features and confirmation that they can in reality be identified from orbital photography, a modest selenodetic control system can be expanded into a net that could ultimately control all future, manned or unmanned, orbital photographic missions.

  11. Dental, Dental Hygiene, and Graduate Students' and Faculty Perspectives on Dental Hygienists' Professional Role and the Potential Contribution of a Peer Teaching Program.

    PubMed

    McComas, Martha J; Inglehart, Marita R

    2016-09-01

    The changing role of dental hygienists deserves dental and dental hygiene educators' attention. The first aim of this survey study was to assess University of Michigan dental, dental hygiene, and graduate students' and faculty members' perceptions of dental hygienists' roles; their attitudes and behaviors related to clinical interactions between dental and dental hygiene students; and perceived benefits of engaging dental hygiene students as peer teachers for dental students. The second aim was to assess whether one group of dental students' experiences with dental hygiene student peer teaching affected their perceptions of the dental hygiene profession. Survey respondents were 57 dental hygiene students in all three years of the program (response rate 60% to 100%); 476 dental students in all four years (response rate 56% to 100%); 28 dental and dental hygiene graduate students (response rate 28%); and 67 dental and dental hygiene faculty members (response rate 56%). Compared to the other groups, dental students reported the lowest average number of services dental hygienists can provide (p≤0.001) and the lowest average number of patient groups for which dental hygienists can provide periodontal care (p<0.001). Dental students also had the least positive attitudes about clinical interactions between dental hygiene and dental students (p<0.001) and perceived the fewest benefits of dental hygiene student peer teaching (p<0.001) before experiencing peer teaching. After experiencing dental hygiene student peer teaching, the dental students' perceptions of dental hygienists' roles, attitudes about clinical interactions with dental hygienists, and perceived benefits of dental hygiene student peer teachers improved and were more positive than the responses of their peers with no peer teaching experiences. These results suggest that dental hygiene student peer teaching may improve dental students' perceptions of dental hygienists' roles and attitudes about

  12. Ergonomic design for dental offices.

    PubMed

    Ahearn, David J; Sanders, Martha J; Turcotte, Claudia

    2010-01-01

    The increasing complexity of the dental office environment influences productivity and workflow for dental clinicians. Advances in technology, and with it the range of products needed to provide services, have led to sprawl in operatory setups and the potential for awkward postures for dental clinicians during the delivery of oral health services. Although ergonomics often addresses the prevention of musculoskeletal disorders for specific populations of workers, concepts of workflow and productivity are integral to improved practice in work environments. This article provides suggestions for improving workflow and productivity for dental clinicians. The article applies ergonomic principles to dental practice issues such as equipment and supply management, office design, and workflow management. Implications for improved ergonomic processes and future research are explored. PMID:20448328

  13. Glucosyltransferase inactivation reduces dental caries.

    PubMed

    Devulapalle, K S; Mooser, G

    2001-02-01

    Dental caries has been an intractable disease in spite of intense dental research. The metabolic acids produced by mutans streptococci demineralize the tooth surface and lead to dental caries. The enzyme glucosyltransferase (GTF) produced by mutans streptococci is the key factor in this process. Oral bacterial GTFs use sucrose as a substrate in synthesis of either water-soluble or insoluble glucans. In this investigation, kinetic studies with divalent metal ions revealed their strong binding affinity to GTF. The metal ions also proved to be strong inhibitors of the enzyme. Here we describe a simple method of inactivating the enzyme that actively participates in dental caries by taking advantage of a Fenton reaction which requires metal ions such as iron or copper and peroxide. The hydroxyl radical ions produced via the Fenton reaction inactivate GTF, a factor in the production of dental caries. PMID:11332534

  14. Current trends in dental implants

    PubMed Central

    Gaviria, Laura; Salcido, John Paul; Guda, Teja

    2014-01-01

    Tooth loss is very a very common problem; therefore, the use of dental implants is also a common practice. Although research on dental implant designs, materials and techniques has increased in the past few years and is expected to expand in the future, there is still a lot of work involved in the use of better biomaterials, implant design, surface modification and functionalization of surfaces to improve the long-term outcomes of the treatment. This paper provides a brief history and evolution of dental implants. It also describes the types of implants that have been developed, and the parameters that are presently used in the design of dental implants. Finally, it describes the trends that are employed to improve dental implant surfaces, and current technologies used for the analysis and design of the implants. PMID:24868501

  15. Dental impression materials.

    PubMed

    Perry, Rachel

    2013-01-01

    It is clear that many impression materials are available to the veterinary dentist. They each have different inherent properties, handling characteristics, and indications for use. A thorough understanding of these concepts is essential if the veterinarian and laboratory technician are to produce meaningful and accurate reproductions of oral structures. New products are constantly being introduced to the dental market, with fantastic claims for ease of use and reproduction of detail. The reader is urged to seek independent research findings when assessing such claims, and make decisions founded in the highest possible levels of evidence. PMID:24006720

  16. Is dental caries neglect?

    PubMed

    Stevens, C L

    2014-11-01

    The recent and widespread media interest highlighting the concerning number of children with poor oral health has, at last, put paediatric dentistry well and truly under the spotlight. Whether on the front page of the Sunday Times (http://www.thesundaytimes.co.uk/sto/news/uk_news/Health/Sugar/article1433860.ece), on GDPUK forums or live Twitter feeds as ITV's The Dentists was broadcast, the whole nation has suddenly awoken to the realisation that tens of thousands of children are undergoing multiple dental extractions under general anaesthesia in the UK every year. This is of course, not a new phenomenon, so why the sudden interest? PMID:25377816

  17. The american dental dream.

    PubMed

    Hodges, Nathan

    2015-01-01

    The American Dental Dream-the cultural desire for straight, white teeth-is difficult, if not impossible, for poor and working-class people to achieve. Using ethnographic fiction, autoethnography, poetry, and qualitative interviewing, I brush away the taken-for-granted assumptions about teeth. I explore the personal, relational, and structural consequences of this cultural desire, and show how social class writes itself on our bodies. I write these culture-centered teeth tales to show how one might cope with their teeth. PMID:25257392

  18. The Prevalence of Dental Anxiety in Patients of a University Dental Clinic

    ERIC Educational Resources Information Center

    Woodmansey, Karl F.

    2005-01-01

    Dental anxiety remains a pervasive barrier to dental treatment for many individuals, including college-age patients. In this article, the author reviews dental anxiety and examines the usefulness of assessment instruments for identifying dental anxiety. Using 2 unique assessment instruments, he examines the prevalence of dental anxiety in his…

  19. Undergraduate dental English education in Japanese dental schools.

    PubMed

    Rodis, Omar M M; Matsumura, Seishi; Kariya, Naoyuki; Nishimura, Michiko; Yoshida, Toshiko

    2013-05-01

    Dental schools in Japan are among many worldwide whose medium of instruction is not in English. With advances in science, technology, and communication, the demand for the globalization of professions increases. At present, dental schools in Asia, the Middle East, and Europe have started revising their dental curricula to either include English courses for dentistry or offer a full English dental curriculum. In Japan, dental English courses started to be introduced into curricula in the early 1990s. However, a survey conducted in 1999 found that English courses were not offered in Japan's twenty-nine dental schools and there was no consensus as to what such courses should include or when and how they should be taught. Ten years after that survey, the survey results reported in this article found that the problems reported in the 1999 survey still exist. Additionally, there are still differences among schools offering English courses in terms of the timing and contents of the courses. Since teachers and school officials will have an important role in curriculum development, this article recommends that a fact-finding meeting with educators, school, and education officials be initiated to discuss, develop, and implement a core curriculum for these dental English courses. PMID:23658413

  20. Dental Curriculum Development in Developing Countries.

    ERIC Educational Resources Information Center

    Phantumvanit, Prathip

    1996-01-01

    Since establishment of formal dental education in Southeast Asia, changes stemming from research and technology have led to dental curriculum changes. Development of the dental curriculum can be divided into three phases: disease oriented; health oriented; and community oriented. Evolution of these phases is traced in the dental curricula of Laos,…

  1. 21 CFR 872.3700 - Dental mercury.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Dental mercury. 872.3700 Section 872.3700 Food and... DENTAL DEVICES Prosthetic Devices § 872.3700 Dental mercury. (a) Identification. Dental mercury is a device composed of mercury intended for use as a component of amalgam alloy in the restoration of...

  2. 21 CFR 872.6390 - Dental floss.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Dental floss. 872.6390 Section 872.6390 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6390 Dental floss. (a) Identification. Dental floss is...

  3. 21 CFR 872.3275 - Dental cement.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Dental cement. 872.3275 Section 872.3275 Food and... DENTAL DEVICES Prosthetic Devices § 872.3275 Dental cement. (a) Zinc oxide-eugenol—(1) Identification... filling or as a base cement to affix a temporary tooth filling, to affix dental devices such as crowns...

  4. 21 CFR 872.6390 - Dental floss.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Dental floss. 872.6390 Section 872.6390 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6390 Dental floss. (a) Identification. Dental floss is...

  5. 21 CFR 872.6390 - Dental floss.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Dental floss. 872.6390 Section 872.6390 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6390 Dental floss. (a) Identification. Dental floss is...

  6. 21 CFR 872.6390 - Dental floss.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Dental floss. 872.6390 Section 872.6390 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6390 Dental floss. (a) Identification. Dental floss is...

  7. 21 CFR 872.3275 - Dental cement.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Dental cement. 872.3275 Section 872.3275 Food and... DENTAL DEVICES Prosthetic Devices § 872.3275 Dental cement. (a) Zinc oxide-eugenol—(1) Identification... filling or as a base cement to affix a temporary tooth filling, to affix dental devices such as crowns...

  8. 21 CFR 872.6390 - Dental floss.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Dental floss. 872.6390 Section 872.6390 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Miscellaneous Devices § 872.6390 Dental floss. (a) Identification. Dental floss is...

  9. Trends in Dentistry and Dental Education.

    ERIC Educational Resources Information Center

    Valachovic, Richard W.; Weaver, Richard G.; Sinkford, Jeanne C.; Haden, N. Karl

    2001-01-01

    Compiled from many of the surveys that the American Dental Education Association routinely publishes, along with data from surveys conducted by the American Dental Association and U.S. Department of Health and Human Services, presents statistical tables and descriptive text on trends among dental patients, among dental practitioners, and in dental…

  10. Sources of Dental Health Teaching Aids.

    ERIC Educational Resources Information Center

    Crawford, Jean H.

    1982-01-01

    Sources of dental health education teaching aids which are available for free or at minimal cost include: (1) The American Dental Health Association; (2) state and local departments of public health; (3) schools of dentistry, dental hygiene, and dental assisting; and (4) the Educator's International Guide. (JN)

  11. Involving Parents in Their Children's Dental Care.

    ERIC Educational Resources Information Center

    Becker, Donna

    1998-01-01

    Asserts that parent education is vital to good dental hygiene for the whole family. Discusses what Head Start staffers can do to ensure that children's dental needs are being met, particularly in assisting parents with taking responsibility for children's dental hygiene. Covers dental care tips for parents, questions and answers about dental…

  12. Science and Photography Linked in iPad and iPhone Apps About Climate Change and Repeat Photography

    NASA Astrophysics Data System (ADS)

    Braasch, G.; Hone, B.

    2014-12-01

    Red Hill Studio and World View of Global Warming co-developed apps for the iPad and iPhone which graphically show climate-driven changes in repeat photographs and maps. The climate app, with 17 interactive screens that show climate changes to glaciers, coasts, rivers and world temperature, reaches a new part of the public, was featured in USA Today and is used in schoolrooms and museums. It led a list of top ten climate apps for 2012. The low price for this app encourages more users and income is being shared with the Union of Concerned Scientists. Red Hill Studio is also developing an app which is an aid for making time series and repeat photography. The Now & Then Cam app will allow scientists and citizens to take closely aligned repeat photos by overlaying the iPad/iPhone's camera image on top of an archival photo. This guides the photographer back towards the original location of the archival shot - leading to a more carefully aligned repeat photograph. The developers hope this app will contribute to both scientific and artistic creation of time-series photographs, an important and persuasive visualization of change. The Painting with Time and Now & Then Cam apps build upon a traveling museum exhibition, Playing with Time, and an international documentary special, Exploring Time, that were developed by Red Hill Studios under grants from the National Science Foundation. The app programmers, Charlie Brown and J.A. Nelson, use Objective C to create fluid, responsive interfaces with no distracting latencies or delays. World View of Global Warming is an independent photojournalistic documentation of global warming and rapid climate change begun in 1999. Repeat and time-series photography is an integral part it its climate communication.

  13. [Maintenance care for dental implant].

    PubMed

    Kamoi, K

    1989-10-01

    Dental implant has tried at the early stage in 19th century recovering an oral function and esthetics. Technological revolutions in biochemical and new materials have developed on the remarkable change in the dental implants, nowadays we call the three generation therapy for dental implantology. There are many kinds of methods and techniques in dental implants, however a lot of troublesome complication on the process of surgical phase, construction of prothodontics and prognosis of maintenance care. In the proceedings of this symposium, I would like to propose you how to manage the maintenance care for various kind of dental implants through the methodology and case presentations. Tendenay and future for dental implants The current outlook of dental implant has increasing supply and demand not only dentists but also patients. According to Japanese Welfare Ministry's report in 1987, average missing teeth over sixty years old generations are approximately 42% in accordance with NIDR (U.S.A.) research. They are missed on ten over teeth in full 28th teeth dentitions owing to dental caries and periodontal diseases. Generally speaking, latent implant patients are occupied on the same possibility of needs for dental implants both Japan and U.S.A. Management of maintenance care The patients hardly recognized the importance of plaque control for the maintenance care in the intraoral condition after implantation. Dentists and dental staffs must be instruct patients for importance of plaque removal and control, because they already had forgotten the habit of teeth cleaning, especially in the edenturous conditions. 1) Concept of establishment in oral hygiene. Motivation and instruction for patients include very important factors in dental implants as well as in periodontal diseases. Patients who could not achieve on good oral hygiene levels obtained no good results in the long term observations. To establish good oral hygiene are how to control supra plaque surrounding tissues

  14. Career patterns of dental hygienists qualifying from the Liverpool Dental Hospital School of Dental Hygiene.

    PubMed

    Hillam, D G

    1989-04-22

    This study assesses the pattern of employment of dental hygienists who qualified from the Liverpool Dental Hospital School of Dental Hygiene between 1977 and 1986. Of the 100 students who qualified during this period, 98 responded to a questionnaire. Seventy-seven per cent were employed as dental hygienists or dental health educators at the time of the survey, which took place between October 1987 and February 1988. The results show that after an initial slight under-employment, the majority quickly found as much work as they wanted and worked for an average of 2.24 practices each. The majority chose part-time employment and there was a steady decline in the number of sessions worked from the third year after qualifying. This decline was due to domestic commitments rather than dissatisfaction with the job. Only 4% stated they would definitely not return to work as a hygienist whilst a further 10% were uncertain. PMID:2719891

  15. Remote sensing as an aid for marsh management: Lafouche parish, Louisiana. [aerial photography of Louisiana

    NASA Technical Reports Server (NTRS)

    Ragan, J. G.; Green, J. H.; Whitehurst, C. A.

    1974-01-01

    NASA aerial photography, primarily color infrared and color positive transparencies, was used in a study of marsh management practices and in comparing managed and unmanaged marsh areas. Weir locations for tidal control are recommended.

  16. An evaluation of multiband photography for rock discrimination. [sedimentary rocks of Front Range, Colorado

    NASA Technical Reports Server (NTRS)

    Lee, K. (Principal Investigator); Raines, G. L.

    1974-01-01

    The author has identified the following significant results. With the advent of ERTS and Skylab satellites, multiband imagery and photography have become readily available to geologists. The ability of multiband photography to discriminate sedimentary rocks was examined. More than 8600 in situ measurements of band reflectance of the sedimentary rocks of the Front Range, Colorado, were acquired. Statistical analysis of these measurements showed that: (1) measurements from one site can be used at another site 100 miles away; (2) there is basically only one spectral reflectance curve for these rocks, with constant amplitude differences between the curves; and (3) the natural variation is so large that at least 150 measurements per formation are required to select best filters. These conclusions are supported by subjective tests with aerial multiband photography. The designed multiband photography concept for rock discrimination is not a practical method of improving sedimentary rock discrimination capabilities.

  17. 36. PHOTOGRAPHY OF W.P.A. PROJECT (MINNEAPOLIS CITY ENGINEER) STRAIN SHEET ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    36. PHOTOGRAPHY OF W.P.A. PROJECT (MINNEAPOLIS CITY ENGINEER) STRAIN SHEET (4 x 5 negative) - Steel Arch Bridge, Hennepin Avenue spanning west channel of Mississippi River, Minneapolis, Hennepin County, MN

  18. The availability of local aerial photography in southern California. [for solution of urban planning problems

    NASA Technical Reports Server (NTRS)

    Allen, W., III; Sledge, B.; Paul, C. K.; Landini, A. J.

    1974-01-01

    Some of the major photography and photogrammetric suppliers and users located in Southern California are listed. Recent trends in aerial photographic coverage of the Los Angeles basin area are also noted, as well as the uses of that imagery.

  19. PHOTOGRAPHY BY KSC SPACE SHUTTLE ORBITER ENTERPRISE STANDS ON KSC'S PAD 39A HIGHLIGHTED AGAINST THE

    NASA Technical Reports Server (NTRS)

    1980-01-01

    PHOTOGRAPHY BY KSC SPACE SHUTTLE ORBITER ENTERPRISE STANDS ON KSC'S PAD 39A HIGHLIGHTED AGAINST THE DARKENED FLORIDA SKY DURING TESTING OF THE HIGH-INTENSITY LIGHTING SYSTMES. THE BANKS OF XENON LIGHTS ARE USED DURING LAUCH PREPARATIONS.

  20. 77 FR 50542 - Culturally Significant Objects Imported for Exhibition Determinations: “New Photography 2012...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-21

    ..., Birdhead (Ji Weiyu and Song Tao), Anne Collier, Zoe Crosher, and Shirana Shahbazi'' Summary: Notice is... objects to be included in the exhibition ``New Photography 2012: Michele Abeles, Birdhead (Ji Weiyu...

  1. Very High Resolution Panoramic Photography to Improve Conventional Rangeland Monitoring 1994

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Rangeland monitoring often includes repeat photographs as a basis for documentation and although photographic equipment and electronics have been evolving rapidly, basic rangeland photo monitoring methods have changed little over time. Ground based digital photography is underutilized, especially s...

  2. Airborne photography of chemical releases and analysis of twilight sky brightness data, phases 1 and 2

    NASA Technical Reports Server (NTRS)

    Bedinger, J. F.; Constantinides, E.

    1976-01-01

    The photography from aboard an aircraft of chemical releases is reported. The equipment installation on the aircraft is described, and photographs of the releases are included. An extensive analysis of twilight sky photographs is presented.

  3. From photography to cinematography: recording movement and gait in a neurological context.

    PubMed

    Aubert, Geneviève

    2002-09-01

    The major challenge of photography has been freezing movement, to transform it into a fixed image or series of images. Very soon, photographers became interested in movement itself and tried to use photography as a tool to analyze movement. At the early stages, physicians interested in movement, perhaps surprisingly, made important technical contributions. Mécanisme de la physionomie humaine, by Duchenne, the first book with physiological experiments illustrated by photographs, is a landmark in this historical development. At the Salpêtrière, thanks to Charcot, photography officially entered clinical neurology. Medical journals with photographs were actively developed by Bourneville. Londe established a clinical photographic laboratory and published the first book on medical photography. The study of animal and human movement by Muybridge and Marey in the 1880s led to chronophotography and later cinematography. Clinicians such as Dercum and Richer took advantage of these new techniques to study pathological movement and gait in neurological diseases. PMID:12481476

  4. Child abuse and neglect: dental and dental hygiene students' educational experiences and knowledge.

    PubMed

    Thomas, John E; Straffon, Lloyd; Inglehart, Marita Rohr

    2006-05-01

    The objective of this study was to explore dental and dental hygiene students' educational experiences and knowledge concerning child abuse/neglect. Questionnaire data were collected from 233 dental (116 male/117 female; response rate=54.82 percent) and seventy-six dental hygiene students (all female; response rate=76.77 percent). Of those surveyed, 94.7 percent of the dental hygiene and 70.5 percent of the dental students reported having learned about child abuse/neglect in classroom settings, and 15.8 percent of the dental hygiene and 29.3 percent of the dental students reported having learned about it in clinical settings. Dental students reported more minutes of instruction about this topic than dental hygiene students (184.48 vs. 112.90 minutes; p=.006). Only 5.5 percent of the dental and 16.7 percent of the dental hygiene students defined child abuse correctly; 32.2 percent of the dental and 13.2 percent of the dental hygiene students did not know their legal responsibility concerning reporting child abuse; and 82.4 percent of the dental and 78.9 percent of the dental hygiene students did not know where to report child abuse. Dental care providers are likely to encounter child abuse and neglect in their professional lives and are legally required to respond to these matters. Dental and dental hygiene curricula should be revisited to ensure that students are adequately prepared for this professional task. PMID:16687641

  5. Classification schemes for dental school libraries.

    PubMed

    McMaugh, D R

    1979-12-01

    The provision of an efficient and acceptable library system for the dental literature is examined. It is suggested that an index to the dental literature is best provided by a combination of Index Medicus and Medical Subject Headings. The Library of Congress scheme would be best for an autonomous dental school and, where a dental school library is provided by a large medical library, the National Library of Medicine Classification would be suitable for dental student use. PMID:395935

  6. A vegetational and ecological resource analysis from space and high flight photography

    NASA Technical Reports Server (NTRS)

    Poulton, C. E.; Faulkner, D. P.; Schrumpf, B. J.

    1970-01-01

    A hierarchial classification of vegetation and related resources is considered that is applicable to convert remote sensing data in space and aerial synoptic photography. The numerical symbolization provides for three levels of vegetational classification and three levels of classification of environmental features associated with each vegetational class. It is shown that synoptic space photography accurately projects how urban sprawl affects agricultural land use areas and ecological resources.

  7. The Use of Small Scale Aerial Photography in a Regional Agricultural Survey

    NASA Technical Reports Server (NTRS)

    Draeger, W. C.

    1971-01-01

    The feasibility of performing inventories of agricultural resources using very small scale aerial or space photography has been investigated. Results to date are encouraging on two counts: (1) the questions posed initially are being answered, and (2) it would seem that a fully operational agricultural inventory using very small scale photography is not beyond the scope of present technology. The biggest problems to be faced in establishing a functional inventory system are those concerning logistics and data handling.

  8. Positive ethics and dental students.

    PubMed

    Abelson, Sigmund H

    2008-01-01

    Recent negative publicity has drawn attention away from recognizing and celebrating the ways today's dental students differ in a positive fashion from previous generations of dental students who may have suffered the same ethical lapses we are hearing about now. Dental students are more diverse than their predecessors and learn to develop a sense of integrity that encompasses more toleration of alternative cultures. They are group-oriented, which expresses itself in sharing responsibility for their colleagues, both in educational settings and in their practices. With guidance from senior dentists and organized dentistry, they will contribute inclusiveness and group responsibility and thus strengthen the profession. PMID:18777890

  9. Roughness Measurement of Dental Materials

    NASA Astrophysics Data System (ADS)

    Shulev, Assen; Roussev, Ilia; Karpuzov, Simeon; Stoilov, Georgi; Ignatova, Detelina; See, Constantin von; Mitov, Gergo

    2016-06-01

    This paper presents a roughness measurement of zirconia ceramics, widely used for dental applications. Surface roughness variations caused by the most commonly used dental instruments for intraoral grinding and polishing are estimated. The applied technique is simple and utilizes the speckle properties of the scattered laser light. It could be easily implemented even in dental clinic environment. The main criteria for roughness estimation is the average speckle size, which varies with the roughness of zirconia. The algorithm used for the speckle size estimation is based on the normalized autocorrelation approach.

  10. Head and neck cancer, dental implants, and dental oncology.

    PubMed

    Garg, Arun; Guez, Ghislaine

    2011-01-01

    Head and neck cancer is a real presence in the dental-implant world--patients who undergo surgery, chemotherapy, and/or radiation often seek the assistance of dental-implant practitioners to restore them to better function; other patients who have had implants in place for years will return with questions regarding how their treatment will be affected by the presence of their dental implant. As oral-cancer treatment modalities are rapidly changing, practitioners struggle to keep up with the literature surrounding this important subset of the dental-implant population. This month, we look at the numbers of patients suffering from oral cancers, consider the different treatment options for patients with oral cancers, and investigate the role that implants play in improving therapeutic outcomes or changing treatment course. PMID:21323003

  11. Increasing dental student diversity through the UNLV Dental Prospects Program.

    PubMed

    McClain, Mildred A; Jones, Francis R; McClain, Clifford R; Curd, Francis M

    2013-05-01

    Adequately providing for the health care of the growing minority population in the United States requires increased racial and ethnic diversity of the health care workforce. Long-term diversity in the dental profession depends on a more diverse student population in dental schools. The University of Nevada, Las Vegas School of Dental Medicine's (UNLV SDM) Dental Prospects Club is a predental education program that has increased the number of underrepresented minority and disadvantaged students in the school by concentrating on outreach, recruitment, and retention initiatives. The approaches used by the club members and faculty advisors to increase the number of underrepresented minority students recruited to and enrolled in the UNLV SDM are discussed in this report. Also described are the strategies, methods, internal infrastructure, and organizational support used to increase the number of underrepresented minority students at the school. PMID:23658399

  12. Does underwater flash photography affect the behaviour, movement and site persistence of seahorses?

    PubMed

    Harasti, D; Gladstone, W

    2013-11-01

    The effect of flash photography on seahorse species has never been tested. An experiment was established to test the effect of flash photography and the handling of Hippocampus whitei, a medium-sized seahorse species endemic to Australia, on their behavioural responses, movements and site persistence. A total of 24 H. whitei were utilized in the experiment with eight in each of the three treatments (flash photography, handling and control). The effect of underwater flash photography on H. whitei movements was not significant; however, the effect of handling H. whitei to take a photograph had a significant effect on their short-term behavioural responses to the photographer. Kaplan-Meier log-rank test revealed that there was no significant difference in site persistence of H. whitei from each of the three treatments and that flash photography had no long-term effects on their site persistence. It is concluded that the use of flash photography by divers is a safe and viable technique with H. whitei, particularly if photographs can be used for individual identification purposes. PMID:24131331

  13. The remote characterization of vegetation using Unmanned Aerial Vehicle photography

    NASA Astrophysics Data System (ADS)

    Rango, A.; Laliberte, A.; Winters, C.; Maxwell, C.; Steele, C.

    2008-12-01

    Unmanned Aerial Vehicles (UAVs) can fly in place of piloted aircraft to gather remote sensing information on vegetation characteristics. The type of sensors flown depends on the instrument payload capacity available, so that, depending on the specific UAV, it is possible to obtain video, aerial photographic, multispectral and hyperspectral radiometric, LIDAR, and radar data. The characteristics of several small UAVs less than 55lbs (25kg)) along with some payload instruments will be reviewed. Common types of remote sensing coverage available from a small, limited-payload UAV are video and hyperspatial, digital photography. From evaluation of these simple types of remote sensing data, we conclude that UAVs can play an important role in measuring and monitoring vegetation health and structure of the vegetation/soil complex in rangelands. If we fly our MLB Bat-3 at an altitude of 700ft (213m), we can obtain a digital photographic resolution of 6cm. The digital images acquired cover an area of approximately 29,350sq m. Video imaging is usually only useful for monitoring the flight path of the UAV in real time. In our experiments with the 6cm resolution data, we have been able to measure vegetation patch size, crown width, gap sizes between vegetation, percent vegetation and bare soil cover, and type of vegetation. The UAV system is also being tested to acquire height of the vegetation canopy using shadow measurements and a digital elevation model obtained with stereo images. Evaluation of combining the UAV digital photography with LIDAR data of the Jornada Experimental Range in south central New Mexico is ongoing. The use of UAVs is increasing and is becoming a very promising tool for vegetation assessment and change, but there are several operational components to flying UAVs that users need to consider. These include cost, a whole set of, as yet, undefined regulations regarding flying in the National Air Space(NAS), procedures to gain approval for flying in the NAS

  14. Dental Arch Wire

    NASA Technical Reports Server (NTRS)

    1979-01-01

    Straightening teeth is an arduous process requiring months, often years, of applying corrective pressure by means of arch wires-better known as brace-which may have to be changed several times in the course of treatment. A new method has been developed by Dr. George Andreasen, orthodontist and dental scientist at the University of Iowa. The key is a new type of arch wire material, called Nitinol, with exceptional elasticity which helps reduce the required number of brace changes. An alloy of nickel and titanium, Nitinol was originally developed for aerospace applications by the Naval Ordnance Laboratory, now the Naval Surface Weapons Laboratory, White Oaks, Maryland. NASA subsequently conducted additional research on the properties of Nitinol and on procedures for processing the metal.

  15. Before and After (Dental Restorations)

    MedlinePlus

    FAQs | Common Questions Why see a prosthodontist? Dentures Dental Implants Board Certification Improving Your Smile Conditions & Symptoms | ... of Care in the Restoration and Replacement of Teeth This site brought to you by: American College ...

  16. Electronic Dental Records System Adoption.

    PubMed

    Abramovicz-Finkelsztain, Renata; Barsottini, Claudia G N; Marin, Heimar Fatima

    2015-01-01

    The use of Electronic Dental Records (EDRs) and management software has become more frequent, following the increase in prevelance of new technologies and computers in dental offices. The purpose of this study is to identify and evaluate the use of EDRs by the dental community in the São Paulo city area. A quantitative case study was performed using a survey on the phone. A total of 54 offices were contacted and only one declinedparticipation in this study. Only one office did not have a computer. EDRs were used in 28 offices and only four were paperless. The lack of studies in this area suggests the need for more usability and implementation studies on EDRs so that we can improve EDR adoption by the dental community. PMID:26262001

  17. Dental abscess: A microbiological review

    PubMed Central

    Shweta; Prakash, S Krishna

    2013-01-01

    Dental abscess is a frequently occurring infectious process known to the health practice. The fate of the infection depends on the virulence of the bacteria, host resistance factors, and regional anatomy. Serious consequences arising from the spread of a dental abscess lead to significant morbidity and mortality. Acute dental abscess is polymicrobial, comprising of strict anaerobes, such as anaerobic cocci, Prevotella, Fusobacterium species, and facultative anaerobes, such as viridans group streptococci and the Streptococcus anginosus group. Numerous novel, uncultivable and fastidious organisms have been identified as potential pathogens with the use of non-culture techniques. The majority of localized dental abscesses respond to surgical treatment while the use of antimicrobials is limited to severe spreading infections. There is a need for good-quality clinical trials of sufficient size to identify the ideal treatment. The microbiology of the acute dentoalveolar abscess and its treatment in the light of improved culture and diagnostic methods are reviewed. PMID:24348613

  18. Rethinking tenure in dental education.

    PubMed

    Slayton, Rebecca L; Kachalia, Parag R; Lozano-Pineda, Juanita; Rolf, David D; Kovarik, Robert E; Dillon, Joycelyn A

    2012-05-01

    In the midst of changes in the environment of academic dentistry over the past two decades, reform of traditional tenure is one way for dental schools to respond to these changes while maintaining scholarly, evidence-based learning environments. Challenges facing academic dentistry today and in the future include a crisis in workforce capacity, difficulty attracting recent graduates into academic positions, overburdened faculty members with limited time for scholarly activity, loss of tenured faculty members due to retirement, and a potentially diminished voice for dental schools within the parent university. The purpose of this opinion article is to suggest ways to reform the current tenure system in dental education as a means of improving recruitment and retention of new faculty members while maintaining or increasing scholarly activity within dental schools. PMID:22550103

  19. Panoramic Dental X-Ray

    MedlinePlus

    ... X-ray? What is Panoramic X-ray? Panoramic radiography , also called panoramic x-ray , is a two- ... Exams Dental Cone Beam CT X-ray, Interventional Radiology and Nuclear Medicine Radiation Safety About this Site ...

  20. Developmental Problems and Dental Morphology

    ERIC Educational Resources Information Center

    Goodwin, William C., Jr.; Erickson, Marilyn T.

    1973-01-01

    Ninety-five subjects (mean age 55 months) with mental retardation, learning disabilities, and/or minimal brain dysfunction and 47 control subjects (mean age 46 months) were compared to determine the relationship between developmental problems and dental morphology. (Author)

  1. [Persistent fever of dental origin].

    PubMed

    Pernice, L; Ribault, J Y; Fourestier, J; Gacon, J; Quilichini, R; Aubert, L; Chaffanjon, P; Roubaudi, G

    1990-01-01

    Based on 5 cases of unexplained prolonged fever, the authors stress the need to systematically look for a dental focus of infection. They discuss the difficulties in determining the site of the probable causal focus and stress the uncertain pathogenic relationship between the dental focus of infection and the fever. The extraction of infected teeth leads to a cure, however, the functional disadvantages of multiple extractions need to be carefully taken into account. PMID:2130447

  2. Surface texture measurement for dental wear applications

    NASA Astrophysics Data System (ADS)

    Austin, R. S.; Mullen, F.; Bartlett, D. W.

    2015-06-01

    The application of surface topography measurement and characterization within dental materials science is highly active and rapidly developing, in line with many modern industries. Surface measurement and structuring is used extensively within oral and dental science to optimize the optical, tribological and biological performance of natural and biomimetic dental materials. Although there has historically been little standardization in the use and reporting of surface metrology instrumentation and software, the dental industry is beginning to adopt modern areal measurement and characterization techniques, especially as the dental industry is increasingly adopting digital impressioning techniques in order to leverage CAD/CAM technologies for the design and construction of dental restorations. As dental treatment becomes increasingly digitized and reliant on advanced technologies such as dental implants, wider adoption of standardized surface topography and characterization techniques will become evermore essential. The dental research community welcomes the advances that are being made in surface topography measurement science towards realizing this ultimate goal.

  3. Oblique Aerial Photography Tool for Building Inspection and Damage Assessment

    NASA Astrophysics Data System (ADS)

    Murtiyoso, A.; Remondino, F.; Rupnik, E.; Nex, F.; Grussenmeyer, P.

    2014-11-01

    Aerial photography has a long history of being employed for mapping purposes due to some of its main advantages, including large area imaging from above and minimization of field work. Since few years multi-camera aerial systems are becoming a practical sensor technology across a growing geospatial market, as complementary to the traditional vertical views. Multi-camera aerial systems capture not only the conventional nadir views, but also tilted images at the same time. In this paper, a particular use of such imagery in the field of building inspection as well as disaster assessment is addressed. The main idea is to inspect a building from four cardinal directions by using monoplotting functionalities. The developed application allows to measure building height and distances and to digitize man-made structures, creating 3D surfaces and building models. The realized GUI is capable of identifying a building from several oblique points of views, as well as calculates the approximate height of buildings, ground distances and basic vectorization. The geometric accuracy of the results remains a function of several parameters, namely image resolution, quality of available parameters (DEM, calibration and orientation values), user expertise and measuring capability.

  4. Digital stereoscopic photography using StereoData Maker

    NASA Astrophysics Data System (ADS)

    Toeppen, John; Sykes, David

    2009-02-01

    Stereoscopic digital photography has become much more practical with the use of USB wired connections between a pair of Canon cameras using StereoData Maker software for precise synchronization. StereoPhoto Maker software is now used to automatically combine and align right and left image files to produce a stereo pair. Side by side images are saved as pairs and may be viewed using software that converts the images into the preferred viewing format at the time of display. Stereo images may be shared on the internet, displayed on computer monitors, autostereo displays, viewed on high definition 3D TVs, or projected for a group. Stereo photographers are now free to control composition using point and shoot settings, or are able to control shutter speed, aperture, focus, ISO, and zoom. The quality of the output depends on the developed skills of the photographer as well as their understanding of the software, human vision and the geometry they choose for their cameras and subjects. Observers of digital stereo images can zoom in for greater detail and scroll across large panoramic fields with a few keystrokes. The art, science, and methods of taking, creating and viewing digital stereo photos are presented in a historic and developmental context in this paper.

  5. Infrared photography and imagery in water resources research

    USGS Publications Warehouse

    Robinove, Charles J.

    1965-01-01

    Infrared photography has restricted usefulness in general water resources studies but is particularly useful in special problems such as shoreline mapping. Infrared imagery is beginning to be used in water resources studies for the identification of surface and sub surface thermal anomalies as expressed at the surface and the measurement of apparent water surface temperatures. It will attain its maximum usefulness only when interpretation criteria for infrared imagery are fully developed. Several important hydrologic problems to which infrared imagery may be applied are: (1) determination of circulation and cooling of water in power plant cooling ponds, (2) measurement of river temperature and temperature decline downstream from power plants discharging heated water, (3) identification of submarine springs along coasts, and (4) measurement of temperature differences along streams as indicators of effluent seepage of ground water. Although it is possible at this time to identify many features of importance to hydrology by the use of infrared imagery, the task remaining is to develop criteria to show the hydrologic significance of the features.

  6. HD Photo: a new image coding technology for digital photography

    NASA Astrophysics Data System (ADS)

    Srinivasan, Sridhar; Tu, Chengjie; Regunathan, Shankar L.; Sullivan, Gary J.

    2007-09-01

    This paper introduces the HD Photo coding technology developed by Microsoft Corporation. The storage format for this technology is now under consideration in the ITU-T/ISO/IEC JPEG committee as a candidate for standardization under the name JPEG XR. The technology was developed to address end-to-end digital imaging application requirements, particularly including the needs of digital photography. HD Photo includes features such as good compression capability, high dynamic range support, high image quality capability, lossless coding support, full-format 4:4:4 color sampling, simple thumbnail extraction, embedded bitstream scalability of resolution and fidelity, and degradation-free compressed domain support of key manipulations such as cropping, flipping and rotation. HD Photo has been designed to optimize image quality and compression efficiency while also enabling low-complexity encoding and decoding implementations. To ensure low complexity for implementations, the design features have been incorporated in a way that not only minimizes the computational requirements of the individual components (including consideration of such aspects as memory footprint, cache effects, and parallelization opportunities) but results in a self-consistent design that maximizes the commonality of functional processing components.

  7. Principles and practice of external digital photography in ophthalmology.

    PubMed

    Mukherjee, Bipasha; Nair, Akshay Gopinathan

    2012-01-01

    It is mandatory to incorporate clinical photography in an ophthalmic practice. Patient photographs are routinely used in teaching, presentations, documenting surgical outcomes and marketing. Standardized clinical photographs are part of an armamentarium for any ophthalmologist interested in enhancing his or her practice. Unfortunately, many clinicians still avoid taking patient photographs for want of basic knowledge or inclination. The ubiquitous presence of the digital camera and digital technology has made it extremely easy and affordable to take high-quality images. It is not compulsory to employ a professional photographer or invest in expensive equipment any longer for this purpose. Any ophthalmologist should be able to take clinical photographs in his/her office settings with minimal technical skill. The purpose of this article is to provide an ophthalmic surgeon with guidelines to achieve standardized photographic views for specific procedures, to achieve consistency, to help in pre-operative planning and to produce accurate pre-operative and post-operative comparisons, which will aid in self-improvement, patient education, medicolegal documentation and publications. This review also discusses editing, storage, patient consent, medicolegal issues and importance of maintenance of patient confidentiality. PMID:22446907

  8. Diffusing light photography of solitons and capillary-wave turbulence

    SciTech Connect

    Wright, W.; Budak, R.; Putterman, S. )

    1994-11-01

    The attenuation of light propagating through a slab of water (containing a dilute concentration of polyballs) is approximately proportional to its thickness. Application of this insight to the local elevation of a fluid surface has enabled us to use photography to determine the instantaneous global topography of the surface of a fluid in motion. Use of diffusing light enables us to obtain images that are free of the caustics which plague shadowgraphs. Applications include breather solitons and wave turbulence which results from the nonlinear interaction of a broadband spectrum of high amplitude surface ripples. Measurements indicate that as the amplitude of excitation of the surface of water is increased the wave number of the capillary motion displays a transition to a broadband spectrum. The temporal response of a single pixel yields the power spectrum of the surface height as a function of frequency [ital f].'' The numerous harmonics which can be seen at low amplitude merge at high amplitude into a broadband spectrum which goes as 1/[ital f][sup 3]. This technique should permit the measurement of turbulent parameters which go beyond the purported range of current theories. [Work supported by US DOE Division of Engineering and Geophysics and NASA Microgravity.

  9. High Speed Photography In The Federal Republic Of Germany

    NASA Astrophysics Data System (ADS)

    Hugenschmidt, Manfred

    1983-03-01

    The present paper gives a survey on recent applications of high-speed photography and cinematography in various fields of scientific research such as plasma physics, laser physics and high power pulse technology. Toward this end classical optical systems have been used and new recording methods have been developed. Improved temporal and spatial resolution has been achieved. High-speed shutters provide useful information if self-luminous phenomena have to be in-vestigated. Since high light amplification is obtained with intensifiers even weakly luminous processes such as electrical prebreakdown phenomena can be recorded. The use of lasers provides highly interesting applications in the ps-, ns- and in the ps-time scale. New laser switching techniques are reported. Nano- and subnanosecond laser pulses, like those produced by superradiant gas laser sources are currently used, because pulse repetition rates up to the GHz range are easily available. By the use of additional dyes the wavelengths of these pulses can be transformed nearly throughout the whole visible spectral range. If needed for particular experiments, precise timing can be provided. For highest time resolution, however, mode locked lasers are required. Examples are given of the feasability of high-speed photographic techniques for the investigation of electrical discharges, for example in sparks or in plasma focus devices, and for studies of optically induced breakdown processes by focussing high power laser radiation on solids state targets, liquids or gases.

  10. Principles and practice of external digital photography in ophthalmology

    PubMed Central

    Mukherjee, Bipasha; Nair, Akshay Gopinathan

    2012-01-01

    It is mandatory to incorporate clinical photography in an ophthalmic practice. Patient photographs are routinely used in teaching, presentations, documenting surgical outcomes and marketing. Standardized clinical photographs are part of an armamentarium for any ophthalmologist interested in enhancing his or her practice. Unfortunately, many clinicians still avoid taking patient photographs for want of basic knowledge or inclination. The ubiquitous presence of the digital camera and digital technology has made it extremely easy and affordable to take high-quality images. It is not compulsory to employ a professional photographer or invest in expensive equipment any longer for this purpose. Any ophthalmologist should be able to take clinical photographs in his/her office settings with minimal technical skill. The purpose of this article is to provide an ophthalmic surgeon with guidelines to achieve standardized photographic views for specific procedures, to achieve consistency, to help in pre-operative planning and to produce accurate pre-operative and post-operative comparisons, which will aid in self-improvement, patient education, medicolegal documentation and publications. This review also discusses editing, storage, patient consent, medicolegal issues and importance of maintenance of patient confidentiality. PMID:22446907

  11. Using 70-mm aerial photography to identify rangeland sites

    NASA Technical Reports Server (NTRS)

    Everitt, J. H.; Gerbermann, A. H.; Alaniz, M. A.; Bowen, R. L.

    1980-01-01

    A south Texas rangeland area was used as a study site to test the use of microdensitometry on 70-mm color-infrared and black-and-white photographs (scale 1:19,000) for distinguishing among 11 range sites (two brushland, seven grassland, two barren land) during the winter (February), spring (May), and summer (August) of 1976. Color-infrared photographs were also taken at a scale of 1:42,000 for the summer date. Film optical density readings were made on one color-infrared film with white light only. The best separations among density readings for all range sites were obtained using white light exposed on color-infrared film in the summer when vegetation was at peak foliage development. Results from this study indicate that 70-mm aerial color-infrared photography at a scale of 1:19,000 or 1:42,000 has good potential for identifying range sites in large and inaccessible areas, and could be a useful tool for range management.

  12. A review of large aperture Schlieren photography technique

    NASA Astrophysics Data System (ADS)

    Xu, Song-bo; Xie, Yong-jun; Chen, Lei

    2016-01-01

    Schlieren photography is a visual process to display the flow of fluids of varying density. It is widely used in wind tunnel tests to photograph the flow of air around objects. To achieve schlieren images with high sensitivity and high resolution, and satisfy the requirements of the large-scale wind tunnel tests, it is urgent to develop schlieren photographers with large aperture primary mirrors. However, the application of large aperture primary mirrors may bring many challenges in the design of the schlieren system. First, the surface figure of large aperture primary mirrors is difficult to control so that the support structure may need more strategical design. Second, because the schlieren system works under some severe environments of the wind tunnel test including the air disturbance, wind-induced ground vibration and high ambient pressure, it has to withstand serious instability risks to ensure a good schlieren image quality. In this work, the current status of the development in the large aperture schlieren systems is reviewed. Several advanced methods, for example, active damping control technique, focal spot monitoring technique, 18-points whilffletree support technique, etc.., are introduced to deal with the challenges of the large aperture schlieren system. This work aims at improving the technical development of large aperture schlieren photographer, which may contribute to the acquisition of the high sensitive and high resolution schlieren images and the improvement of the testing capability in wind tunnel experiments.

  13. Efficient organic photomemory with photography-ready programming speed

    PubMed Central

    Kim, Mincheol; Seong, Hyejeong; Lee, Seungwon; Kwon, Hyukyun; Im, Sung Gap; Moon, Hanul; Yoo, Seunghyup

    2016-01-01

    We propose a device architecture for a transistor-type organic photomemory that can be programmed fast enough for use in electrical photography. Following the strategies used in a flash memory where an isolated charge storage node or floating gate is employed, the proposed organic photomemory adopts an isolated photo-absorption zone that is embedded between upper and lower insulator layers without directly interfacing with a semiconductor channel layer. This isolated photo-absorption zone then allows the device to operate in electrically ‘on’ state, in which the high electric-field region can have a maximal spatial overlap with the illuminated area for efficient and facile light-programming. With the proposed approach, a significant threshold voltage shift is attained even with the exposure time as short as 5 ms. High quality dielectric layers prepared by initiated chemical vapor deposition ensure erasing to occur only with electrical signal in a controlled manner. Retention time up to 700 s is demonstrated. PMID:27457189

  14. Efficient organic photomemory with photography-ready programming speed.

    PubMed

    Kim, Mincheol; Seong, Hyejeong; Lee, Seungwon; Kwon, Hyukyun; Im, Sung Gap; Moon, Hanul; Yoo, Seunghyup

    2016-01-01

    We propose a device architecture for a transistor-type organic photomemory that can be programmed fast enough for use in electrical photography. Following the strategies used in a flash memory where an isolated charge storage node or floating gate is employed, the proposed organic photomemory adopts an isolated photo-absorption zone that is embedded between upper and lower insulator layers without directly interfacing with a semiconductor channel layer. This isolated photo-absorption zone then allows the device to operate in electrically 'on' state, in which the high electric-field region can have a maximal spatial overlap with the illuminated area for efficient and facile light-programming. With the proposed approach, a significant threshold voltage shift is attained even with the exposure time as short as 5 ms. High quality dielectric layers prepared by initiated chemical vapor deposition ensure erasing to occur only with electrical signal in a controlled manner. Retention time up to 700 s is demonstrated. PMID:27457189

  15. Efficient organic photomemory with photography-ready programming speed

    NASA Astrophysics Data System (ADS)

    Kim, Mincheol; Seong, Hyejeong; Lee, Seungwon; Kwon, Hyukyun; Im, Sung Gap; Moon, Hanul; Yoo, Seunghyup

    2016-07-01

    We propose a device architecture for a transistor-type organic photomemory that can be programmed fast enough for use in electrical photography. Following the strategies used in a flash memory where an isolated charge storage node or floating gate is employed, the proposed organic photomemory adopts an isolated photo-absorption zone that is embedded between upper and lower insulator layers without directly interfacing with a semiconductor channel layer. This isolated photo-absorption zone then allows the device to operate in electrically ‘on’ state, in which the high electric-field region can have a maximal spatial overlap with the illuminated area for efficient and facile light-programming. With the proposed approach, a significant threshold voltage shift is attained even with the exposure time as short as 5 ms. High quality dielectric layers prepared by initiated chemical vapor deposition ensure erasing to occur only with electrical signal in a controlled manner. Retention time up to 700 s is demonstrated.

  16. Study of the detail content of Apollo orbital photography

    NASA Technical Reports Server (NTRS)

    Kinzly, R. E.

    1972-01-01

    The results achieved during a study of the Detail Content of Apollo Orbital Photography are reported. The effect of residual motion smear or image reproduction processes upon the detail content of lunar surface imagery obtained from the orbiting command module are assessed. Data and conclusions obtained from the Apollo 8, 12, 14 and 15 missions are included. For the Apollo 8, 12 and 14 missions, the bracket-mounted Hasselblad camera had no mechanism internal to the camera for motion compensation. If the motion of the command module were left totally uncompensated, these photographs would exhibit a ground smear varying from 12 to 27 meters depending upon the focal length of the lens and the exposure time. During the photographic sequences motion compensation was attempted by firing the attitude control system of the spacecraft at a rate to compensate for the motion relative to the lunar surface. The residual smear occurring in selected frames of imagery was assessed using edge analyses methods to obtain and achieved modulation transfer function (MTF) which was compared to a baseline MTF.

  17. Dental home: Patient centered dentistry

    PubMed Central

    Girish Babu, K. L.; Doddamani, G. M.

    2012-01-01

    Early childhood dental caries occurs in all racial and socioeconomic groups; however, it tends to be more prevalent in children in families belonging to the low-income group, where it is seen in epidemic proportions. Dental caries results from an overgrowth of specific organisms that are a part of normally occurring human flora. Human dental flora is site specific, and an infant is not colonized until the eruption of the primary dentition at approximately 6 to 30 months of age. The most likely source of inoculation of an infant's dental flora is the mother, or another intimate care provider, shared utensils, etc. Decreasing the level of cariogenic organisms in the mother's dental flora at the time of colonization can significantly impact the child's redisposition to caries. To prevent caries in children, high-risk individuals must be identified at an early age (preferably high-risk mothers during prenatal care), and aggressive strategies should be adopted, including anticipatory guidance, behavior modifications (oral hygiene and feeding practices), and establishment of a dental home by 1 year of age for children deemed at risk. PMID:24478960

  18. Dental Attitudes, Perceptions, and Treatment Needs in a University Population.

    ERIC Educational Resources Information Center

    Cohen, Leonard A.; And Others

    1980-01-01

    Dental attitudes of college students were examined: frequency of past visits; subceptibility to dental conditions; seriousness, preventability, and treatability of dental conditions; and satisfaction with dentists, practices, and other dental conditions. (Authors/CJ)

  19. A preliminary training guide for utilizing high-altitude, color-infrared photography in compiling soil maps

    NASA Technical Reports Server (NTRS)

    Weaver, J. E.; Parkhurst, W. H.; Ward, J. F.; Almond, R. H.

    1977-01-01

    Instruction for acquiring and analytically processing small-scale color-infrared photography to perform a soil resources inventory over forests of the southern U.S. is provided. Planning the project; acquiring aerial photography, materials, equipment and supplemental data; and preparing the photography for analysis are discussed. The procedures for preparing ancillary and primary component overlays are discussed. The use of correlation charts and dichotomous keys for mountain landforms, water regime, and vegetation is explained.

  20. Correlation of missions 191, 51M and helicopter photography. [aerial photography and mapping of three areas in Test Site 175 in Texas

    NASA Technical Reports Server (NTRS)

    Bryan, B. A.; Tunnel, S. H.

    1972-01-01

    The data obtained during aerial photography flights using a helicopter are presented. The areas photographed are identified as three areas within Test Site 175: (1) Rosenberg, (2) Houston Ship Channel/Trinity Bay, and (3) the Somerville Dam. Data are presented in the form of charts. Reproductions of the aerial photographs are included.

  1. Dental Therapy Assistant: Quality of Restorations Placed and Finished.

    ERIC Educational Resources Information Center

    Heid, Theodore H.; Bair, Jeffrey H.

    The U.S. Army Dental Corps has implemented a new concept of dental care delivery, formally identified as the Improved Dental Care Delivery System. The concept is based on the conservation of professional manpower resources through the use of dental treatment teams employing expanded duty dental assistants. Dental Therapy Assistant (DTA) is the…

  2. Mouthrinses and dental caries.

    PubMed

    2002-10-01

    Mouthrinsing for the prevention of dental caries in children and adolescents was established as a mass prophylactic method in the 1960s and has shown average efficacy of caries reduction between 20-50%. Commonly, weekly or twice monthly rinsing procedures using neutral 0.2% NaF solutions have been used in schools or institutions in areas with low fluoride concentrations in the drinking water. Today, when dental caries has declined substantially in the western countries, and relatively few individuals are suffering from caries, the efficiency of large scale mouthrinsing is questioned and more individual approaches of caries prevention strategies are needed. For this reason individual caries risk assessments are necessary, utilising diagnostic tools with the aim of explaining the main causes of the caries disease. Therefore in high risk patients, daily mouthrinses using 0.05% NaF can be recommended combined with other selective preventive measures such as sugar restriction, improved oral hygiene, antibacterial treatments, and so forth. Mouthrinsing solutions have therefore been combined with antiplaque agents like chlorhexidine and other agents which can improve the caries preventive effect not only in high caries risk patients, including those with dry mouth problems and root caries. Other agents than sodium fluoride have been used, such as stannous and amine fluoride with proven clinical effects. However, although a series of new formulas of mouthrinses containing fluoride combined with different antiplaque agents have shown promising antibacterial and antiplaque efficacy, their long-term clinical effects are sparsely documented. Acute and chronic side effects from established and recommended mouthrinsing routines are extremely rare but ethanol containing products should not be recommended to children for long-term use or to individuals with alcohol problems. Patients with dry mouth problems should avoid mouthrinses containing high concentration of detergent

  3. Visibility of dental pulp spaces in dental ultrasound.

    PubMed

    Szopinski, K T; Regulski, P

    2014-01-01

    The purpose of this study was to assess the feasibility of dental ultrasound with conventional sonographic equipment. The teeth of three adult volunteers who had cone beam CT examinations performed previously with clinical indications and one extracted tooth were examined using linear and compact (hockey stick) sonographic probes. The sonographic images were compared with cone beam CT images reconstructed accordingly. Dental pulp spaces were demonstrated in all teeth not covered with prosthetic crowns. The dentin and pulp were best visualized at the level of the neck of the teeth. The dentin was hypoechoic, and the superficial layer comprising the cementum and the pulp spaces were hyperechoic. Dental ultrasound is feasible with general purpose sonographic machines. The buccal surfaces of all teeth are accessible with a compact (hockey stick) probe. Visualization and differentiation of dental pulp spaces, dentin and the superficial layer comprising cementum is possible in the portions of teeth not covered by the alveolar bone or prosthetic crowns. The dental pulp spaces are best seen at the level of the tooth neck. Pulp and endodontic fillings can be distinguished on ultrasound. PMID:24170803

  4. Dental Therapy: Evolving in Minnesota’s Safety Net

    PubMed Central

    Born, David; Nagy, Amanda

    2014-01-01

    Objectives. We identified Minnesota’s initial dental therapy employers and surveyed dental safety net providers’ perceptions of dental therapy. Methods. In July 2011, we surveyed 32 Minnesota dental safety net providers to assess their prospective views on dental therapy employment options. In October 2013, we used an employment scan to reveal characteristics of the early adopters of dental therapy. Results. Before the availability of licensed dental therapists, safety net dental clinic directors overwhelmingly (77%) supported dental therapy. As dental therapists have become licensed over the past 2 years, the early employers of dental therapists are safety net clinics. Conclusions. Although the concept of dental therapy remains controversial in Minnesota, it now has a firm foundation in the state’s safety net clinics. Dental therapists are being used in innovative and diverse ways, so, as dental therapy continues to evolve, further research to identify best practices for incorporating dental therapists into the oral health care team is needed. PMID:24825234

  5. [Prosthetic dental alloys. 1].

    PubMed

    Quintero Engelmbright, M A

    1990-11-01

    A wide variety of restoration materials for prosthetic odontology is now available to the dental surgeon, either of the covalent type (acrylic resins), metallic (alloys), ionic (porcelains), or a combination of them, as in the so-called composites, such as the composite resins, or as ceramics-metals mixtures. An example of the latter is a product called Miracle-Mix, a glass ionomere cement reinforced with an amalgam alloy. In those cases where the blend is done by a synterization process, the material is called Cermet. The above-listed alternatives clearly evidence day-to-day advances in odontology, with researchers and manufacturers engaged the world over in improving existing products or developing new ones to enrich the dentist's armamentarium. As a side effect of this constant renewal, those dentists who have failed to update their knowledge fall behind in their practice as they persist in using products they have known for years, and may be deceived by advertisements of too-often unreliable products. It is, therefore, important to be aware of available products and their latest improvements. PMID:2132464

  6. [Prosthetic dental alloys (2)].

    PubMed

    Quintero Englembright, M A

    1990-12-01

    A wide variety of restoration materials for prosthetic odontology is now available to the dental surgeon, either of the covalent type (acrylic resins), metallic (alloys), ionic (porcelains), or a combination of them, as in the so-called composites, such as the composite resins, or as ceramics-metals mixtures. An example of the latter is a product called Miracle-Mix, a glass ionomere cement reinforced with an amalgam alloy. In those cases where the blend is done by a synterization process, the material is called Cermet. The above-listed alternatives clearly evidence day-to-day advances in odontology, with researchers and manufacturers engaged the world over in improving existing products or developing new ones to enrich the dentist's armamentarium. As a side effect of this constant renewal, those dentists who have failed to update their knowledge fall behind in their practice as they persist in using products they have known for years, and may be deceived by advertisements of too-often unreliable products. It is, therefore, important to be aware of available products and their latest improvements. PMID:2132470

  7. Sealants and dental caries

    PubMed Central

    O’Donnell, Jean A.; Modesto, Adriana; Oakley, Marnie; Polk, Deborah E.; Valappil, Benita; Spallek, Heiko

    2013-01-01

    Background The authors conducted a qualitative study of private-practice dentists in their offices by using vignette-based interviews to assess barriers to the use of evidence-based clinical recommendations in the treatment of noncavitated carious lesions. Methods The authors recruited 22 dentists as a convenience sample and presented them with two patient vignettes involving noncavitated carious lesions. Interviewers asked participants to articulate their thought processes as they described treatment recommendations. Participants compared their treatment plans with the American Dental Association’s recommendations for sealing noncavitated carious lesions, and they described barriers to implementing these recommendations in their practices. The authors recorded and transcribed the sessions for accuracy and themes. Results Personal clinical experience emerged as the determining factor in dentists’ treatment decisions regarding noncavitated carious lesions. Additional factors were lack of reimbursement and mistrust of the recommendations. The authors found that knowledge of the recommendations did not lead to their adoption when the recommendation was incongruent with the dentist’s personal experience. Conclusions The authors found that ingrained practice behavior based on personal clinical experience that differed substantially from evidence-based recommendations resulted in a rejection of these recommendations. Practical Implications Attempts to improve the adoption of evidence-based practice must involve more than simple dissemination of information to achieve a balance between personal clinical experience and scientific evidence. PMID:23543700

  8. Speckle photography applied to measure deformations of very large structures

    NASA Astrophysics Data System (ADS)

    Conley, Edgar; Morgan, Chris K.

    1995-04-01

    Fundamental principles of mechanics have recently been brought to bear on problems concerning very large structures. Fields of study include tectonic plate motion, nuclear waste repository vault closure mechanisms, the flow of glacier and sea ice, and highway bridge damage assessment and residual life prediction. Quantitative observations, appropriate for formulating and verifying models, are still scarce however, so the need to adapt new methods of experimental mechanics is clear. Large dynamic systems often exist in environments subject to rapid change. Therefore, a simple field technique that incorporates short time scales and short gage lengths is required. Further, the measuring methods must yield displacements reliably, and under oft-times adverse field conditions. Fortunately, the advantages conferred by an experimental mechanics technique known as speckle photography nicely fulfill this rather stringent set of performance requirements. Speckle seemed to lend itself nicely to the application since it is robust and relatively inexpensive. Experiment requirements are minimal -- a camera, high resolution film, illumination, and an optically rough surface. Perhaps most important is speckle's distinct advantage over point-by-point methods: It maps the two dimensional displacement vectors of the whole field of interest. And finally, given the method's high spatial resolution, relatively short observation times are necessary. In this paper we discuss speckle, two variations of which were used to gage the deformation of a reinforced concrete bridge structure subjected to bending loads. The measurement technique proved to be easily applied, and yielded the location of the neutral axis self consistently. The research demonstrates the feasibility of using whole field techniques to detect and quantify surface strains of large structures under load.

  9. Using digital photography to examine grazing in montane meadows

    USGS Publications Warehouse

    McIlroy, Susan K.; Allen-Diaz, Barbara H.; Berg, Alexander C.

    2011-01-01

    Cattle (Bos taurus) numbers on national forests are allocated based on allotment grazing capacity, but spatial patterns of timing and density at smaller scales are difficult to assess. However, it is often in meadows or riparian areas that grazing may affect hydrology, biodiversity, and other important ecosystem characteristics. To explore real-time animal presence in montane meadows we distributed 18 digital cameras across nine sites in the Sierra National Forest, California. Our objectives were to document seasonal and diurnal presence of both cattle and mule deer (Odocoileus hemionus), identify the effects of three fencing treatments on animal distribution, and test digital photography as a tool for documenting cattle presence. We recorded 409 399 images during daylight hours for two grazing seasons, and we identified 5 084 and 24 482 cattle "marks" (instances of animal occurrence) in 2006 and 2007, respectively. Deer presence was much lower, with 331 marks in 2006 and 598 in 2007. Morning cattle presence was highest before 0800 hours both years (13.7% and 15.4% of total marks for 2006 and 2007, respectively). Marks decreased until 1100 hours and then increased around 1400 hours and remained relatively stable until 1900 hours. Marks then rose precipitously, with >20% of total marks recorded after 1900 hours both years. Deer presence was less than 10% per hour until 1800 hours, when >20% of total marks were recorded after this time both years. Among treatments, cattle marks were highest outside fences at partially fenced meadows, and deer were highest within completely fenced meadows. Our experience suggests that cameras are not viable tools for meadow monitoring due to variation captured within meadows and the time and effort involved in image processing and review.

  10. Electronic Photography at the NASA Langley Research Center

    NASA Technical Reports Server (NTRS)

    Holm, Jack; Judge, Nancianne

    1995-01-01

    An electronic photography facility has been established in the Imaging & Photographic Technology Section, Visual Imaging Branch, at the NASA Langley Research Center (LaRC). The purpose of this facility is to provide the LaRC community with access to digital imaging technology. In particular, capabilities have been established for image scanning, direct image capture, optimized image processing for storage, image enhancement, and optimized device dependent image processing for output. Unique approaches include: evaluation and extraction of the entire film information content through scanning; standardization of image file tone reproduction characteristics for optimal bit utilization and viewing; education of digital imaging personnel on the effects of sampling and quantization to minimize image processing related information loss; investigation of the use of small kernel optimal filters for image restoration; characterization of a large array of output devices and development of image processing protocols for standardized output. Currently, the laboratory has a large collection of digital image files which contain essentially all the information present on the original films. These files are stored at 8-bits per color, but the initial image processing was done at higher bit depths and/or resolutions so that the full 8-bits are used in the stored files. The tone reproduction of these files has also been optimized so the available levels are distributed according to visual perceptibility. Look up tables are available which modify these files for standardized output on various devices, although color reproduction has been allowed to float to some extent to allow for full utilization of output device gamut.

  11. The use of retinal photography in non-ophthalmic settings and its potential for neurology

    PubMed Central

    Pérez, Mario A.; Bruce, Beau B.; Newman, Nancy J.; Biousse, Valérie

    2012-01-01

    Background Ocular fundus examination is an important element of the neurological examination. However, direct ophthalmoscopy is difficult to perform without pupillary dilation and requires extensive practice to accurately recognize optic nerve and retinal abnormalities. Recent studies have suggested that digital retinal photography can replace direct ophthalmoscopy in many settings. Review Summary Ocular fundus imaging is routinely used to document and monitor disease progression in ophthalmology. Advances in optical technology have made it easier to obtain high-quality retinal imaging, even without pupillary dilation. Retinal photography has a high sensitivity, specificity, and inter-/intra-examination agreement compared to in-person ophthalmologist examination, suggesting that photographs can be used in lieu of ophthalmoscopy in many clinical situations. Non-mydriatic retinal photography has recently gained relevance as a helpful tool for diagnosing neuro-ophthalmologic disorders in the emergency department. Additionally, several population-based studies have used retinal imaging to relate ophthalmic abnormalities to the risk of hypertension, renal dysfunction, cardiovascular mortality, subclinical and clinical stroke, and cognitive impairment. The possibility of telemedical consultation offered by digital retinal photography has already increased access to timely and accurate subspecialty care, particularly for underserved areas. Conclusion Retinal photography (even without pupillary dilation) has become increasingly available to medical fields outside of ophthalmology, allowing for faster and more accurate diagnosis of various ocular, neurologic and systemic disorders. The potential for telemedicine may provide the additional benefits of improving access to appropriate urgent consultation in both clinical and research settings. PMID:23114666

  12. Dental Care for Medicaid and CHIP Enrollees

    MedlinePlus

    ... Reports and Evaluations Basic Health Program State Resources Innovation Accelerator Program Medicaid State Technical Assistance Medicaid and ... Individual State Reports ADA Guide to Medicaid Dental Innovations AAPD State EPSDT Dental Periodicity Schedules State Medicaid ...

  13. American Academy of Dental Sleep Medicine

    MedlinePlus

    ... ProSomnus Sleep Technologies Nierman Practice Management ResMed SML-Space Maintainers Laboratory ... Copyright © American Academy of Dental Sleep Medicine, All Rights Reserved. American Academy of Dental Sleep ...

  14. Curriculum Guidelines for Clinical Dental Hygiene.

    ERIC Educational Resources Information Center

    Journal of Dental Education, 1985

    1985-01-01

    The American Association of Dental Schools curriculum guidelines for clinical dental hygiene include definitions, notes on the interrelationship of courses, an overview of course objectives, and suggested primary educational goals, prerequisites, core content, specific objectives, sequencing, faculty, and facilities. (MSE)

  15. FastStats: Oral and Dental Health

    MedlinePlus

    ... What's this? Submit Button NCHS Home Oral and Dental Health Recommend on Facebook Tweet Share Compartir Data ... States, 2015, table 60 [PDF - 9.8 MB] Dental visits Percent of children aged 2-17 with ...

  16. Differential diagnosis of dental fluorosis made by undergraduate dental students

    PubMed Central

    Rigo, Lilian; Lodi, Leodinei; Garbin, Raíssa Rigo

    2015-01-01

    ABSTRACT Objective To check knowledge of undergraduate dental students to make diagnosis of dental fluorosis with varying degrees of severity and choose its appropriate treatment. Methods Data were collected using a semi-structured questionnaire addressing knowledge of undergraduates based on ten images of mouths presenting enamel changes. Results Only three images were correctly diagnosed by most undergraduates; the major difficulty was in establishing dental fluorosis severity degree. Conclusion Despite much information about fluorosis conveyed during the Dentistry training, as defined in the course syllabus, a significant part of the students was not able to differentiate it from other lesions; they did not demonstrate expertise as to defining severity of fluorosis and indications for treatment, and could not make the correct diagnosis of enamel surface changes. PMID:26761552

  17. Dental care utilization over time.

    PubMed

    Beazoglou, T; Brown, L J; Heffley, D

    1993-12-01

    Between 1950 and 1978, per capita real dental expenditures in the U.S. grew at an average annual rate of 3.33%. Between 1978 and 1989 there was virtually no net growth in this measure of dental care utilization. This sharp curtailment of utilization growth has promoted debate about the sources of this change. Possible explanations include, among others, a reduction in dental disease due to increased exposure to fluoridation, the substitution of noncaloric sweeteners for refined sugar, preventive dentistry, , improved oral health habits, an increase in the net price of dental services, and the cost-containment efforts of insurers and employers. Changes have occurred in all of these variables, but little has done to isolate and quantify the individual effects. This decomposition is difficult, in part, because of the lack of an established model for time-series analysis of dental care utilization. A model of dental care demand, incorporating economic factors (out-of-pocket or net dental prices, per capita income, and nondental prices) as well as dietary factors (refined sugar consumption, noncaloric sweeteners, and exposure to fluoridated water), is combined with a simple model of dental care supply within an equilibrium framework. A two-stage estimation procedure is applied, using U.S. aggregate time-series data for the period 1950-89. Results show that economic and dietary factors are significantly related to changes in utilization. Net price and income elasticities of demand exhibit the expected signs and are compatible with estimates from cross-sectional studies. Decreases in cane and beet sugar consumption, facilitated by the increase in the use of noncaloric sweeteners, are associated with reductions in utilization. Fluoridation appears to be weakly but positively related to utilization. There also appears to have been a significant structural shift in demand since 1978. Overall goodness-of-fit is strong and the model accurately tracks the 1978-89 flattening of

  18. Salivary biomarkers for dental caries.

    PubMed

    Gao, Xiaoli; Jiang, Shan; Koh, David; Hsu, Chin-Ying Stephen

    2016-02-01

    As a highly prevalent multifactorial disease, dental caries afflicts a large proportion of the world's population. As teeth are constantly bathed in saliva, the constituents and properties of this oral fluid play an essential role in the occurrence and progression of dental caries. Various inorganic (water and electrolytes) and organic (proteins and peptides) components may protect teeth from dental caries. This occurs via several functions, such as clearance of food debris and sugar, aggregation and elimination of microorganisms, buffering actions to neutralize acid, maintaining supersaturation with respect to tooth mineral, participation in formation of the acquired pellicle and antimicrobial defense. Modest evidence is available on the associations between dental caries and several salivary parameters, including flow rate, buffering capacity and abundance of mutans streptococci. Despite some controversial findings, the main body of the literature supports an elevated caries prevalence and/or incidence among people with a pathologically low saliva flow rate, compromised buffering capacity and early colonization or high titer of mutans streptococci in saliva. The evidence remains weak and/or inconsistent on the association between dental caries and other saliva parameters, such as other possible cariogenic species (Lactobacillus spp., Streptococcus sanguis group, Streptococcus salivarius, Actinomyces spp. and Candida albicans), diversity of saliva microbiomes, inorganic and organic constituents (electrolytes, immunoglobulins, other proteins and peptides) and some functional properties (sugar clearance rate, etc.). The complex interactions between salivary components and functions suggest that saliva has to be considered in its entirety to account for its total effects on teeth. PMID:26662487

  19. Belongingness in undergraduate dental education.

    PubMed

    Radford, D R; Hellyer, P

    2016-05-27

    Objective To undertake a detailed educational evaluation into dental students' experience of the concept of belongingness and their development as 'safe beginners' on an outreach placement at the University of Portsmouth Dental Academy (UPDA).Method The participants were asked two questions: Did you feel belongingness at UPDA?; and When in your year rotation did you feel this? They completed the educational evaluation anonymously in their last week of attendance. The quantitative data was handled with descriptive statistics and the qualitative data was analysed for recurring themes.Results A 95% response rate was achieved. Eighty six percent of respondents strongly agreed to feeling belongingness and 56% felt it after their first two weeks. Four themes were identified: 'Interaction with the preexisting people environment' (1a. Initial welcoming and warmth 1b. Continued interest in me as an individual); 'Developing collegiality' (2a. My group of fellow students 2b. Working with the dental team as a dentist 2c. The team of everyone at UPDA); 'In the clinical environment' (3a. Being a dentist with responsibility and respect 3b. The physical environment 3c. Becoming a reflective independent practitioner); and 'Leadership'.Conclusion Belongingness in dental education should be defined as:- a deeply personal and contextually mediated experience in which a student becomes an essential and respected part of the dental educational environment where all are accepted and equally valued by each other and which allows each individual student to develop autonomy, self-reflection and self-actualisation as a clinician. PMID:27228935

  20. [Websites of dental practices evaluated].

    PubMed

    Poorterman, J H G; Tjiook, S P; Moeijes, S F S; Brand, H S

    2014-05-01

    In 2013, a dental practice without a website is almost unthinkable. Using a sample of309 dentists drawn from the list of members of the Dutch Dental Association in 2012, a study was carried out to find out whether the dental practice of the general dental practitioner had a website. The content of each website was subsequently inventoried using a questionnaire. Eighty-nine percent of the dental practices had a website. The content of the websites, however, varied enormously. An element such as the professional registration number with a reference to the professional register were absent in 73% of the websites and the date of the most recent update of the website was mentioned only once. The name of the dentist, his or her professional qualification and an email address were missing on respectively 9%, 20% and 9% of the websites. Contracts of the practice with insurance companies were rarely clearly indicated. The websites of many practices would benefit considerably from a significant improvement. PMID:24881254