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Sample records for obturator externus bursa

  1. Relationship between cup position and obturator externus muscle in total hip arthroplasty

    PubMed Central

    2010-01-01

    Background It is often challenging to find the causes for postoperative pain syndromes after total hip replacement, since they can be very allotropic. One possible cause is the muscular impingement syndrome. The most commonly known impingement syndrome is the psoas impingement. Another recently described impingement syndrome is the obturator externus muscle impingement. The aim of this study is to analyze pathological conditions of the Obturator externus and to show possible causes. Methods 40 patients who had undergone a total hip replacement were subjected to clinical and MRI examinations 12 months after the surgery. The Harris Hip Score (HHS) was used to analyze pain and function. Additionally, a satisfaction score and a pain score (VAS) were determined. The MRI allowed for the assessment of the spatial relation between the obturator externus muscle and the acetabulum. Also measured were the acetabular inclination angle as well as the volume and cross-sectional area of the obturator externus muscle. Results The patients were assigned to 3 groups in accordance with their MRI results. Group 1 patients (n = 18) showed no contact between the obturator externus and the acetabulum. Group 2 (n = 13) showed contact, and group 3 (n = 9) an additional clear displacement of the muscle in its course. It was not possible to establish a connection between the imaging findings, the HHS, the VAS, and patient satisfaction. What was striking, however, was a significant difference between the median inclination angle in group 1 (40° ± 5.4°) and group 3 (49° ± 4.7°) (p < 0.05), and the corresponding image-morphological pathology. The average inclination angle in group 2 was 43.3° ± 3.8° Conclusion Contact between the obturator externus muscle and the caudal acetabula border occurs frequently, but is only rarely accompanied by a painful muscular impingement. The position of the acetabula must be seen as one of the main risk factors for contact between the acetabula border

  2. Pyomyositis of Obturator Muscles: Unusual Late Presentation

    PubMed Central

    Soraganvi, Prasad Channappa; Ramakanth, R

    2013-01-01

    Introduction: Pyomyositis of obturator muscles is rare condition. Late presentation with deformities of hip misleads the clinician. Late presentation (6 weeks) of this condition has not been reported earlier. This report highlights this unusual presentation of Pyomyositis of the obturator muscles. Case Report: We are reporting a 14year old female patient presented with limp and pain in hip since 6 weeks. Her hip radiographs were unremarkable. Patient was admitted and MRI done. MRI findings were consistent with obturator pyomyositis. Diagnosis of pyomyositis confirmed by MRI and we performed percutaneous aspiration and drained about 25ml of purulent material mixed with blood. The culture grew Staphylococcus aureus. Patient received intravenous antibiotic for 1week and oral antibiotic for 2weeks. Patient was immobilized in fixed skin traction in Thomas splint for 5days, later gentle mobilization was started. Her condition improved dramatically after aspiration. A follow up MRI done at 3 weeks following aspiration revealed a significant reduction in intramuscular collection of obturator internus and obturator externus. Three weeks following aspiration patient was relieved of the pain and was able to walk normally. At 6 months follow up visit patient was asymptomatic. Conclusion: Late presentation of obturator pyomyositis is rare. We emphasise on careful examination and need for early imaging for diagnosis. Percutaneous drainage results in successful treatment. PMID:27298909

  3. Bilateral recurrent external obturator muscle hematoma: An unusual cause of pelvic pain in hemophilia

    PubMed Central

    ARPACI, TANER; SASMAZ, ILGEN; AKBAS, TUGANA; EKEN, ALPER; OZGUR, ANIL; ANTMEN, BULENT

    2016-01-01

    Following joint hemorrhages, intramuscular hemorrhages are the second most prevalent bleeding pattern in hemophiliac patients. Hematomas of the iliopsoas muscle are a well-known complication of hemophilia; however, obturator muscle hematomas are rare. We herein report a case of spontaneous bleeding of the bilateral external obturator muscles, which occured three times within a period of 9 months in a hemophilia patient with factor VIII inhibitors. To the best of our knowledge, this is the first published case of an obturator externus muscle hematoma in hemophilia. In addition to hip hemarthrosis, iliopsoas hematomas and acute appendicitis, obturator muscle hematoma should be considered as one of the diagnostic alternatives for pelvic pain in hemophiliaψ patients. Magnetic resonance imaging enables rapid diagnosis of obturator muscle hematoma. PMID:27073678

  4. Obturator internus muscle abscess in children: report of seven cases and review.

    PubMed

    Viani, R M; Bromberg, K; Bradley, J S

    1999-01-01

    Obturator internus muscle (OIM) abscess is an uncommon entity often mistaken for septic arthritis of the hip. We describe seven children with OIM abscess and review seven previously reported cases. The most common presenting symptoms were hip or thigh pain (14 patients), fever (13), and limp (13). The hip was flexed, abducted, and externally rotated in 11 patients. Magnetic resonance imaging and computed tomography (CT) were diagnostic for OIM abscess in the 14 patients. Associated abscesses were located in the obturator externus muscle (5 patients), psoas muscle (2), and iliac muscle (1). The etiologic agents were Staphylococcus aureus (8 patients), Streptococcus pyogenes (2), Neisseria gonorrhoeae (2), and Enterococcus faecalis (1). Three patients underwent CT-guided percutaneous drainage, and three had surgical drainage. Three patients had ischial osteomyelitis in addition to OIM abscess. The 11 children with uncomplicated OIM abscess were treated for a median of 28 days. All patients had an uneventful recovery. PMID:10028081

  5. Synthetic Bursae for Robots

    NASA Technical Reports Server (NTRS)

    Lovchik, Christopher S.

    2005-01-01

    Synthetic bursae are under development for incorporation into robot joints that are actuated by motor-driven cables in a manner similar to that of arthropod joints actuated by muscle-driven tendons. Like natural bursae, the synthetic bursae would serve as cushions and friction reducers. A natural bursa is a thin bladder filled with synovial fluid, which serves to reduce friction and provide a cushion between a bone and a muscle or a tendon. A synthetic bursa would be similar in form and function: It would be, essentially, a compact, soft roller consisting of a bladder filled with a non-Newtonian fluid. The bladder would be constrained to approximately constant volume. The synthetic bursa would cushion an actuator cable against one of the members of a robot joint and would reduce the friction between the cable and the member. Under load, the pressure in the bladder would hold the opposite walls of the bladder apart, making it possible for them to move freely past each other without rubbing.

  6. Globus Pallidus Externus Neurons Expressing parvalbumin Interconnect the Subthalamic Nucleus and Striatal Interneurons

    PubMed Central

    Saunders, Arpiar; Huang, Kee Wui; Sabatini, Bernardo Luis

    2016-01-01

    The globus pallidus externus (GP) is a nucleus of the basal ganglia (BG), containing GABAergic projection neurons that arborize widely throughout the BG, thalamus and cortex. Ongoing work seeks to map axonal projection patterns from GP cell types, as defined by their electrophysiological and molecular properties. Here we use transgenic mice and recombinant viruses to characterize parvalbumin expressing (PV+) GP neurons within the BG circuit. We confirm that PV+ neurons 1) make up ~40% of the GP neurons 2) exhibit fast-firing spontaneous activity and 3) provide the major axonal arborization to the STN and substantia nigra reticulata/compacta (SNr/c). PV+ neurons also innervate the striatum. Retrograde labeling identifies ~17% of pallidostriatal neurons as PV+, at least a subset of which also innervate the STN and SNr. Optogenetic experiments in acute brain slices demonstrate that the PV+ pallidostriatal axons make potent inhibitory synapses on low threshold spiking (LTS) and fast-spiking interneurons (FS) in the striatum, but rarely on spiny projection neurons (SPNs). Thus PV+ GP neurons are synaptically positioned to directly coordinate activity between BG input nuclei, the striatum and STN, and thalamic-output from the SNr. PMID:26905595

  7. Obturator hernia of the fallopian tube.

    PubMed

    Karasaki, Takahiro; Nakagawa, Tassei; Tanaka, Nobutaka

    2013-06-01

    Obturator hernia of the fallopian tube is extremely rare. Multidetector computed tomography of a 43-year-old nulliparous woman with sudden onset lower right abdominal pain showed a low-density mass in the right obturator canal suspected of being an obturator hernia of the uterine adnexa. She was diagnosed as having an incarcerated obturator hernia of the fallopian tube at operation and treated with prosthetic mesh. Obturator hernia of the fallopian tube is very rare, and all cases reported in the literature were localized on the right side, perhaps due to the lesser mobility of the left than the right fallopian tube. PMID:22990633

  8. Obturator hernia: A diagnostic challenge

    PubMed Central

    Tokushima, Midori; Aihara, Hidetoshi; Tago, Masaki; Tomonaga, Motosuke; Sakanishi, Yuta; Yoshioka, Tsuneaki; Hyakutake, Masaki; Kyoraku, Itaru; Sugioka, Takashi; Yamashita, Shu-ichi

    2014-01-01

    Patient: Female, 90 Final Diagnosis: Obturator hernia Symptoms: Epigastric pain • vomiting Medication: — Clinical Procedure: — Specialty: Gastroenterology and Hepatology Objective: Challenging differential diagnosis Background: Obturator hernia (OH) can be difficult to diagnose because it shows only nonspecific signs and symptoms. Although pain in a lower limb caused by compression of the obturator nerve by the hernia in the obturator canal (Howship-Romberg sign) is a characteristic sign, its presence is rather rare. Case Report: We herein describe the case of a 90-year-old woman with an OH that was difficult to diagnose because of her slight abdominal signs and symptoms on admission and subtle abdominal computed tomography (CT) findings. Although the CT images revealed the presence of an OH, this finding was overlooked because it contained only a part of the small intestine wall, which is called the Richter type. Fortunately, her condition improved dramatically with only conservative treatment. Conclusions: Although early diagnosis is essential to reduce morbidity and mortality, OH can be a diagnostic challenge even with abdominal CT. PMID:25006359

  9. Obturator prosthesis for hemimaxillectomy patients

    PubMed Central

    Singh, Mayank; Bhushan, Akshay; Kumar, Narendra; Chand, Sharad

    2013-01-01

    Rehabilitation of hemimaxillectomy patients can be challenging. The most common problem with prosthetic treatment in such patients is in getting adequate retention, stability, and support. The size and location of the defect usually influences the amount of impairment and difficulty in prosthetic rehabilitation. The obturator prosthesis is commonly used as an effective means for rehabilitating hemimaxillectomy cases. In cases of large maxillary defects, movement of the obturator prosthesis is inevitable and requires a form of indirect retention to limit the rotation of the prosthesis. The goal of prosthodontics is rehabilitation of missing oral and extraoral structures along with restoration of the normal functions of mastication, speech, swallowing, appearance, and so on. Malignancies are common in the oral region, which are treated through surgical intervention. Surgical intervention creates communication between the oral cavity, nasal cavity, and maxillary sinus. In such cases, it is very difficult for the patient to perform various normal functions like mastication, swallowing, speaking, and so on. Prosthodontic rehabilitation with obturator prosthesis restores the missing structures and acts as a barrier between the communication among the various cavities. PMID:24163568

  10. A Morphometric Study of the Obturator Nerve around the Obturator Foramen

    PubMed Central

    Jo, Se Yeong; Chang, Jae Chil; Bae, Hack Gun; Oh, Jae-Sang; Heo, Juneyoung

    2016-01-01

    Objective Obturator neuropathy is a rare condition. Many neurosurgeons are unfamiliar with the obturator nerve anatomy. The purpose of this study was to define obturator nerve landmarks around the obturator foramen. Methods Fourteen cadavers were studied bilaterally to measure the distances from the nerve root to relevant anatomical landmarks near the obturator nerve, including the anterior superior iliac spine (ASIS), the pubic tubercle, the inguinal ligament, the femoral artery, and the adductor longus. Results The obturator nerve exits the obturator foramen and travels infero-medially between the adductors longus and brevis. The median distances from the obturator nerve exit zone (ONEZ) to the ASIS and pubic tubercle were 114 mm and 30 mm, respectively. The median horizontal and vertical distances between the pubic tubercle and the ONEZ were 17 mm and 27 mm, respectively. The shortest median distance from the ONEZ to the inguinal ligament was 19 mm. The median inguinal ligament lengths from the ASIS and the median pubic tubercle to the shortest point were 103 mm and 24 mm, respectively. The median obturator nerve lengths between the ONEZ and the adductor longus and femoral artery were 41 mm and 28 mm, respectively. Conclusion The obturator nerve exits the foramen 17 mm and 27 mm on the horizontal and sagittal planes, respectively, from the pubic tubercle below the pectineus muscle. The shallowest area is approximately one-fifth medially from the inguinal ligament. This study will help improve the accuracy of obturator nerve surgeries to better establish therapeutic plans and decrease complications. PMID:27226861

  11. Immediate obturator stabilization using mini dental implants.

    PubMed

    Bohle, Gregory C; Mitcherling, William W; Mitcherling, John J; Johnson, Robert M; Bohle, George C

    2008-08-01

    Edentulous patients with maxillary defects face a more challenging oral rehabilitation process than dentate patients. With the use of mini dental implants (MDIs), it is now possible to immediately increase obturator retention and stability. Implant patients can have a retentive obturator that enhances the overall efficacy of the prosthesis both in comfort and function. PMID:18482362

  12. Fabrication of a Feeding Obturator for Infants.

    PubMed

    Hansen, Paul A; Cook, N Blaine; Ahmad, Omaid

    2016-03-01

    Large clefts in the lip and palate are common congenital anomalies. If the cleft palate is large enough, conventional feeding techniques may not provide proper nutrition for the infant. Feeding obturators will aid in the ability of the infant to attain suction and help the infant to feed adequately. It is necessary for the infant to have sustained weight gain prior to surgery to correct the cleft lip and/or palate. Fabrication of an infant feeding obturator is a simple technique using materials found in every dental office. An impression is made using modeling plastic impression compound. This impression is relined using irreversible hydrocolloid, and the resulting cast is used to enable a vacuum-formed obturator to be fabricated. The vacuum-formed obturator is smoothed and adjusted in the infant's mouth to ensure closure of the palate but allows pace posteriorly to allow normal breathing. The resulting obturator is well retained in the infant's mouth, allowing feeding. PMID:26237189

  13. Fracture resistance of roots obturated with novel hydrophilic obturation systems

    PubMed Central

    Hegde, Vibha; Arora, Shashank

    2015-01-01

    Aim: Comparative assessment of fracture resistance of roots obturated with three hydrophilic systems — novel CPoint system, Resilon/Epiphany system, and EndoSequence BC sealer; and one hydrophobic gold standard gutta-percha/AHPlus system. Materials and Methods: Ninety freshly extracted, human, single-rooted mandibular premolars were selected. The specimens were decoronated and standardized to a working length of 13 mm. The teeth were randomly divided into six groups (n = 15). In Group A, teeth were left unprepared and unfilled (negative control). Rest of the groups were prepared by using ProTaper system up to a master apical file F3; followed by which Group B was left unobturated (positive control); Group C, novel CPoint System; group D, Resilon/Epiphany system, Group E EndoSequence BC sealer, and Group F gutta-percha and AH Plus. Specimens were stored for 2 weeks at 100% humidity. Each group was then subjected to fracture testing by using a universal testing machine. The force required to fracture each specimen was recorded and the data was analyzed statistically using analysis of variance (ANOVA) test and Tukey's post-hoc test. Results: The hydrophilic obturation systems have shown to exhibit significantly higher fracture resistance as shown by the values in Groups C, D, and E (P < 0.05) when compared with Group F. Within hydrophilic groups there was significant difference between Group D and Groups C and E (P < 0.05), while Groups C and E had no significant difference (P > 0.05). Conclusion: In contrast to hydrophobic systems, hydrophilic systems showed higher fracture resistance in a single-rooted premolar. PMID:26069417

  14. Palatal obturators in patients after maxillectomy

    PubMed Central

    CARDELLI, P.; BIGELLI, E.; VERTUCCI, V.; BALESTRA, F.; MONTANI, M.; DE CARLI, S.; ARCURI, C.

    2014-01-01

    SUMMARY Prosthodontic management of palatal defects is fundamental to improve patient’s life undergoing to a maxillary surgical treatment. A lot of maxillary defects are a direct consequence of surgical treatment of malformations, neoplasms or trauma. The obturators are prosthesis used to close palatal defects after maxillectomy, to restore masticatory function and to improve speech. The primary goals of the obturator prosthesis are to preserve the remaining teeth and tissue and to provide comfort, function, and aesthetics to the patients. Different materials and retention methods are a characteristic of new types of obturators. PMID:25992263

  15. Cast Titanium for Obturator Framework Construction in Maxillofacial Prosthodontics.

    PubMed

    Bourne, George K; Barber, Andrew J; Wilson, Paul H R

    2015-12-01

    A 37 year old male presented with the complaint of a loose and bulky acrylic obturator prosthesis. He had previously tried to using a different acrylic obturator prostheses as well as both cobalt chromium and titanium framework obturators. The most successful previous prosthesis was a titanium based obturator which had performed well prior to a fractured clasp. Accordingly, following an exploration of the available surgical and prosthodontic treatment options, a further tooth borne partial maxillary obturator was provided successfully. The case highlights the relative merits and limitations of the use of cast titanium as a denture base material in partial denture and obturator construction. PMID:26767244

  16. A Bilateral Traumatic Hip Obturator Dislocation

    PubMed Central

    Karaarslan, Ahmet Adnan; Acar, Nihat; Karci, Tolga; Sesli, Erhan

    2016-01-01

    A case of a bilateral simultaneous traumatic obturator dislocation of both hip joints in an 18-year-old young man following a traffic accident is presented. We reduced the dislocated femoral heads immediately under general anesthesia followed by passive and active exercises and early full-weight bearing mobilization. After 5 years, the result was excellent. PMID:26977327

  17. The maneuver to release an incarcerated obturator hernia.

    PubMed

    Shigemitsu, Y; Akagi, T; Morimoto, A; Ishio, T; Shiraishi, N; Kitano, S

    2012-12-01

    An obturator hernia occurs through the pelvic obturator canal, a rigid ring made up of the underside of the superior pubic ramus and the obturator fascia. Obturator hernias have been associated with a high mortality due to the difficulty in diagnosis and the population in which it occurs. We examined four patients diagnosed with incarcerated obturator hernia, and showed that the strangulated intestine was not necrotic. We flexed the diseased leg calmly and repeatedly with slight rotation toward the outside and slight adduction toward the inside at supine position. The pain vanished suddenly during this maneuver. After this maneuver, the patients were able to undergo elective surgery after a certain interval. We discuss the possible use of this maneuver to release an incarcerated obturator hernia. PMID:21369820

  18. Modern Endodontic Principles. Part 5: Obturation.

    PubMed

    Darcey, James; Roudsari, Reza Vahid; Jawad, Sarra; Taylor, Carly; Hunter, Mark

    2016-03-01

    Once cleaning and shaping is complete the clinician must obturate the canal. There are many different materials and techniques available each with their own discrete advantages and disadvantages. Whichever technique is used, the goal is to seal the entire prepared length of the root canal. This paper describes how best this may be achieved. CPD/Clinical Relevance: It is incumbent on the clinician to ensure that once the canal has been prepared it is sealed from bacterial re-entry. PMID:27188127

  19. Obturator prostheses following palatal resection: clinical cases

    PubMed Central

    Tirelli, G; Rizzo, R; Biasotto, M; Di Lenarda, R; Argenti, B; Gatto, A; Bullo, F

    2010-01-01

    Summary Malignant tumours of the upper gum and hard palate account for 1-5% of malignant neoplasms of the oral cavity; two thirds of the lesions which involve these areas are squamous cell carcinomas. Most of these carcinomas are diagnosed late, when they invade the underlying bone. The procedures of choice for removal are: alveolectomy, palatectomy, maxillectomy, which may be total or partial. Surgical reconstruction of the defect may be carried out using a wide range of microvascularized flaps: osteomuscolocutaneous of the internal iliac crest, an osteocutaneous flap of the fibula or scapula, fascia, or osteocutaneous radial flap, or a pedicled flap of temporal muscle. These flaps are supported by single or multiple obturator prostheses. Rehabilitation via palatal obturators is preferred in patients with a poor prognosis or in weak condition. Rehabilitation aims to: restore the separation between the oral and nasal cavities, enable the patient to swallow, maintain or provide mastication, sufficient occlusion and mandibular support, support the soft facial tissues, re-establish speech and restore an aesthetically pleasing smile. Hence, it is crucial to work in close cooperation with the staff who makes the prosthesis and who evaluates the case when the surgery is planned and obtains the necessary gnatological, anatomical and functional information. Thereafter, during the surgical stage, for the immediate obturators, or in the successive days, for the temporary obturators, work is devoted to making the prostheses. In this regard, the Odonto-prostheses Service of the Stomatological Clinic does not follow a rigid protocol but materials and techniques are selected on a personal basis, according to the features of each individual clinical case. Mobile rehabilitative systems are the systems of choice, both of which related to the traditional concepts of retention and stability and systems of self-stabilizing prostheses according to J. Dichamp, albeit modified in

  20. Pes anserinus and anserine bursa: anatomical study

    PubMed Central

    Lee, Je-Hun; Kim, Kyung-Jin; Jeong, Young-Gil; Lee, Nam Seob; Han, Seung Yun; Lee, Chang Gug; Kim, Kyung-Yong

    2014-01-01

    This study investigated the boundary of anserine bursa with the recommended injection site and shape on the insertion area of pes anserinus (PA), with the aim of improving clinical practice. Eighty six legs from 45 Korean cadavers were investigated. The mixed gelatin solution was injected to identify the shape of anserine bursa, and then the insertion site of the PA tendons was exposed completely and carefully dissected to identify the shape of the PA. The sartorius was inserted into the superficial layer and gracilis, and the semitendinosus was inserted into the deep layer on the medial surface of the tibia. The number of the semitendinosus tendons at the insertion site varied: 1 in 66% of specimens, 2 in 31%, and 3 in 3%. The gracilis and semitendinosus tendons were connected to the deep fascia of leg. Overall, the shape of the anserine bursa was irregularly circular. Most of the anserine bursa specimens reached the proximal line of the tibia, and some of the specimens reached above the proximal line of the tibia. In the medial view of the tibia, the anserine bursa was located posteriorly and superiorly from the tibia's midline, and it followed the lines of the sartorius muscle. The injection site for anserine bursa should be carried out at 20° from the vertical line medially and inferiorly, 15 or 20 mm deeply, and at the point of about 20 mm medial and 12 mm superior from inferomedial point of tibial tuberosity. PMID:24987549

  1. Incarcerated obturator hernia: early diagnostic using helical computed tomography.

    PubMed

    Avaro, J-P; Biance, N; Savoie, P-H; Peycru, T; Pauleau, G; Richez, P; Charpentier, R; Balandraud, P

    2008-04-01

    Obturator hernia is a rare event with poor clinical signs. Delayed diagnosis is a cause of increased mortality due to ruptured gangrenous bowel. We report a case of incarcerated obturator hernia which highlights the usefulness of computed tomography (CT) scanning in diagnosing this condition. PMID:17628737

  2. [Pubic osteotomy in obturator gliding hernia].

    PubMed

    Fritz, T; Teklote, J; Kraus, T

    1997-12-01

    Hernias of the obturator foramen are rare. They are described mostly in elderly female patients in poor health. Often the correct diagnosis is stumbled upon as a result of surprising intraoperative findings. Surgical therapy is indicated often by the clinical symptoms of an incarcerated hernia. Herniation of the entire urinary bladder with hemorrhagic infarction has never been described before. For an anatomical reduction of the hernia it was necessary to resect the superior pubic ramus. For plastic reconstruction a marlex mesh was used. PMID:9483360

  3. Endoscopic Resection of the Bicipitoradial Bursa.

    PubMed

    Lui, Tun Hing; Sit, Yan Kit; Pan, Xiao Hua

    2016-03-01

    The bicipitoradial bursa lies at the insertion of the biceps tendon on the radial tuberosity. It is an unusual site for chronic bursitis. It can be treated conservatively with aspiration and steroid injection. Surgical excision of the bursa is indicated in case of infection cause, failed conservative treatment with recurrence of the enlarged bursa and pain after aspiration, the presence of nerve compression with neurological impairment, mechanical limitation to flexion and extension of the elbow or biceps tendon degeneration, and/or functional impairment. Open resection through the anterior approach requires extensive dissection to expose the radial tuberosity and the radial neck, which increases the risk of neurovascular injury. Endoscopic resection is possible through distal biceps tendoscopy and endoscopy around the radial neck. It is technically demanding and should be reserved to the experienced elbow arthroscopist. PMID:26752772

  4. The Obturator Guiding Technique in Percutaneous Endoscopic Lumbar Discectomy

    PubMed Central

    Han, In Ho; Cho, Won Ho; Nam, Kyoung Hyup

    2012-01-01

    In conventional percutaneous disc surgery, introducing instruments into disc space starts by inserting a guide needle into the triangular working zone. However, landing the guide needle tip on the annular window is a challenging step in endoscopic discectomy. Surgeons tend to repeat the needling procedure to reach an optimal position on the annular target. Obturator guiding technique is a modification of standard endoscopic lumbar discectomy, in which, obturator is used to access triangular working zone instead of a guide needle. Obturator guiding technique provides more vivid feedback and easy manipulation. This technique decreases the steps of inserting instruments and takes safer route from the peritoneum. PMID:22639720

  5. Dentinal defects before and after rotary root canal instrumentation with three different obturation techniques and two obturating materials

    PubMed Central

    Kumaran, Ponnuswamy; Sivapriya, Elangovan; Indhramohan, Jamuna; Gopikrishna, Velayutham; Savadamoorthi, K Subramani; Pradeepkumar, Angambakkam Rajasekharan

    2013-01-01

    Aim: To evaluate the role of rotary root canal instrumentation followed by obturation with three different techniques and two different materials on the incidence of dentinal defects. Materials and Methods: One hundred and sixty mandibular premolars were divided into eight groups (n = 20). Group I was left untreated and served as control. The other seven groups were prepared with profile rotary instruments till #40.06 taper. After preparation, group II was left unfilled, groups III, IV, and V were obturated with Gutta-percha and AH Plus sealer using passive technique, lateral compaction and warm vertical compaction, respectively. Groups VI, VII, and VIII were obturated with Resilon and Realseal sealer using passive technique, lateral compaction, and warm vertical compaction, respectively. Roots were then sectioned at 3, 6, and 9 mm from the apex and inspected under a stereomicroscope (50×) for dentinal defects. Chi-square test was performed to compare the incidence of dentinal defects between the groups (P < 0.05). Results: The unprepared control group had no dentinal defects. The instrumentation group (group II) and the obturation group (groups III-VIII) showed significantly more defects than the uninstrumented control group (group I) (P < 0.001). There was no significant difference between the root canal obturating techniques (group III-VIII) when compared with the instrumentation group (group II). On inter group comparison among the obturation groups the number of defects after lateral compaction with Gutta-percha (group IV) was significantly larger than passive Gutta-percha obturation (group III) (P < 0.05). Conclusions: The results suggest that root canal instrumentation significantly influenced the incidence of dentinal defects or fracture. Dentinal defects were more significantly attributed to the role of root canal instrumentation rather than the type of obturation technique or material. Lateral compaction with Gutta-percha significantly produces more

  6. Morphological Examination of the Obturator Notch and Canal in Cervidae

    PubMed Central

    TAE, Hyun-Jin; PARK, Byung-Yong; KIM, In-Shik; AHN, Dongchoon

    2014-01-01

    ABSTRACT The purpose of this study was to investigate gross findings of the obturator notch (ON) and obturator canal (OC) in Cervidae. A total of 183 pelvic girdles from 26 species of deer were examined, and the obturator canal (OC) was classified into 4 types based on the degree of separation from the obturator foramen (OF). The deep ON was observed primarily in the subfamily Capreolinae (telemetacarpal deer). The small bony OC was frequently observed in Hydropotes inermis, Mazama gouazoubira and Ozotoceros bezoarticus. A canal without a tubercle or bony bridge structure was mainly observed in the subfamily Cervinae (plesiometacarpal deer). These results suggest that the deep ONs or the OCs separated by bony structures are more common in telemetacarpal rather than plesiometacarpal deer. PMID:24430657

  7. Use of obturators in rehabilitation of maxillectomy defects.

    PubMed

    Borlase, G

    2000-10-01

    Several methods are available to reconstruct the maxilla after trauma, surgical resection of a tumour or as the result of congenital malformations. For a successful restoration the patient must feel that they can socialize without impediment, they must have acceptable speech, dental appearance and satisfactory oral function. Techniques include placement of an obturator and/or surgical reconstruction with local or free flaps followed by an implant-supported restoration. This presentation aims to demonstrate the advantages and disadvantages of various techniques in providing patients with a functional and aesthetic restoration of the maxillary arch, after surgical resection, for removal of tumours. Surgical techniques for improving the placement and outcome of obturators are discussed. Results from a patient assessment of obturator function is presented, demonstrating the successful use of obturators in patients treated at the Combined Head and Neck Clinic, ORL Department, Greenlane Hospital. PMID:11709985

  8. Chairside modification of a surgical obturator: a clinical report.

    PubMed

    Mukohyama, Hitoshi; Sasaki, Mariko; Taniguchi, Hisashi

    2004-06-01

    Functional rehabilitation of maxillectomy patients is important in reestablishing the patients' quality of life. This article describes a prosthodontic technique that allows for modification of a surgical obturator clinically, allowing rapid restoration of speech and deglutition. PMID:15211291

  9. A titanium and visible light-polymerized resin obturator.

    PubMed

    Rilo, Benito; da Silva, José Luis; Martinez-Insua, Arturo; Santana, Urbano

    2002-04-01

    Obturator prostheses are typically large, and their weight and size are often important design factors. This article describes the fabrication of an obturator prosthesis with a titanium framework and visible light-polymerized denture base resin. It is speculated that these low-density materials may produce prostheses lighter than similar ones made with conventional materials. An added advantage is that visible light-polymerizing resins facilitate relining. PMID:12011852

  10. Obturator internus muscle abscess in children.

    PubMed

    Orlicek, S L; Abramson, J S; Woods, C R; Givner, L B

    2001-01-01

    The authors describe four cases of obturator internus muscle (OIM) abscess in children, including their clinical presentations and treatment. This was a retrospective chart review. Children and adolescents younger than 18 years discharged between July 1, 1985, and September 30, 1998, from Brenner Children's Hospital with the diagnosis of muscle abscess or pelvic abscess were identified. A total of 56 patients were identified with the diagnosis of muscle abscess or pelvic abscess. OIM abscess was defined by radiologic findings of an inflammatory process with fluid collection in the OIM, along with the clinical findings suggestive of an OIM abscess. Four of the patients met the definition of OIM muscle abscess. The common presenting features were fever, limp, and hip pain. Computed tomography or magnetic resonance imaging was diagnostic in all four patients, and Staphylococcus aureus was the causative agent in each. All the patients recovered, one after surgical drainage and the other three after antimicrobial therapy alone or with needle aspiration. The presentation of OIM pyomyositis is similar to that of psoas muscle pyomyositis and other infectious processes of the pelvis and hip. The S. aureus is the most common etiologic agent but not the only one reported. Most patients can be managed without open surgical drainage, but needle aspirations may be helpful both therapeutically and diagnostically. PMID:11675547

  11. Defective bursa regeneration after irradiation of young thymectomized chickens

    SciTech Connect

    Bhogal, B.S.; Chi, D.S.; Galton, J.E.; Bell, M.K.; Thorbecke, G.J.

    1984-08-01

    The ability of the bursa of Fabricius to regenerate after gamma-irradiation and bone marrow reconstitution was examined in chickens thymectomized (TX) immediately after hatching. Irradiation (2 X 500 R) 3 weeks after hatching was followed by impaired bursa regeneration, as judged both by bursa/body weight ratios and by bursa follicle development 3-6 weeks later in TX as compared to control birds. Germinal center formation in the spleen was deficient, and immune responses to sheep erythrocytes (SRBC) and B. abortus (BA) were moderately reduced in the TX as compared to control birds irradiated at 3 weeks but not in TX birds irradiated at 5 weeks of age.

  12. CT imaging features of obturator prostheses in patients following palatectomy or maxillectomy.

    PubMed

    Kumar, V A; Hofstede, T M; Ginsberg, L E

    2011-01-01

    Palatal tumors are often treated with palatectomy or maxillectomy. The resulting surgical defect produces an oroantral communication. An obturator is a removable prosthesis used to close the palatal or maxillectomy defect. Fifteen patients who had undergone palatectomy or maxillectomy for carcinoma and subsequent obturator prosthesis placement were retrospectively studied. Obturators were characterized by Hounsfield units and were subdivided into 3 CT imaging groups: either hyperattenuated, hollow (air-containing), or heterogeneous (isoattenuated to hyperattenuated with internal foci of air). Eight patients had hyperattenuated obturators either representing acrylic resin or Trusoft. Four patients had hollow obturators also composed of acrylic resin or Trusoft. Three patients had heterogeneous obturators, which were composed of only Trusoft. The postoperative imaging of patients treated for palatal or maxillary tumors can be complicated by the presence of obturator prostheses. The intent of this article was to familiarize the reader with the CT imaging features of obturator prostheses. PMID:21799037

  13. Resistance to fracture of dental roots obturated with different materials.

    PubMed

    Celikten, Berkan; Uzuntas, Ceren Feriha; Gulsahi, Kamran

    2015-01-01

    The aim of this study was to compare the vertical fracture resistance of roots obturated with different root canal filling materials and sealers. Crowns of 55 extracted mandibular premolar teeth were removed to provide root lengths of 13 mm. Five roots were saved as negative control group (canals unprepared and unfilled). Fifty root canals were instrumented and then five roots were saved as positive control group (canals prepared but unfilled). The remaining 45 roots were randomly divided into three experimental groups (n = 15 root/group) and obturated with the following procedures: in group 1, glass ionomer-based sealer and cone (ActiV GP obturation system); in group 2, bioceramic sealer and cone (EndoSequence BC obturation system); and in group 3, roots were filled with bioceramic sealer and cone (Smartpaste bio obturation system). All specimens were tested in a universal testing machine for measuring fracture resistance. For each root, the force at the time of fracture was recorded in Newtons. The statistical analysis was performed by using Kruskal-Wallis and post hoc test. There were no significant differences between the three experimental groups. The fracture values of three experimental and negative control groups were significantly higher than the positive control group. Within the limitations of this study, all materials increased the fracture resistance of instrumented roots. PMID:25756048

  14. Speech Rehabilitation of Maxillectomy Patients with Hollow Bulb Obturator

    PubMed Central

    Kumar, Pravesh; Jain, Veena; Thakar, Alok

    2012-01-01

    Aim: To evaluate the effect of hollow bulb obturator prosthesis on articulation and nasalance in maxillectomy patients. Materials and Methods: A total of 10 patients, who were to undergo maxillectomy, falling under Aramany classes I and II, with normal speech and hearing pattern were selected for the study. They were provided with definitive maxillary obturators after complete healing of the defect. The patients were asked to wear the obturator for six weeks and speech analysis was done to measure changes in articulation and nasalance at four different stages of treatment, namely, preoperative, postoperative (after complete healing, that is, 3-4 months after surgery), after 24 hours, and after six weeks of providing the obturators. Articulation was measured objectively for distortion, addition, substitution, and omission by a speech pathologist, and nasalance was measured by Dr. Speech software. Results: The statistical comparison of preoperative and six weeks post rehabilitation levels showed insignificance in articulation and nasalance. Comparison of post surgery complete healing with six weeks after rehabilitation showed significant differences in both nasalance and articulation. Conclusion: Providing an obturator improves the speech closer to presurgical levels of articulation and there is improvement in nasality also. PMID:23440022

  15. Obturator internus muscle abscess in a child: a case report.

    PubMed

    Bansal, Manish; Bhaliak, Vijay; Bruce, Colin E

    2008-09-01

    The authors report a case of abscess in the obturator internus muscle, which is a rare occurrence. It was managed with antibiotics and surgical intervention was not necessary. Pyomyositis involving the muscles around the hip needs to be differentiated from septic arthritis and transient synovitis of the hip because these pathologies more commonly afflict this joint. However, when present, abscesses usually affect the psoas or the glutei. Only rarely is the obturator internus involved by the abscess. Magnetic resonance imaging is the imaging modality of choice to image the obturator internus and to ascertain the diagnosis. Lack of awareness of the existence of this condition leads to a delay in the correct diagnosis. PMID:19471173

  16. Variation in the Obturator Vasculature During Routine Anatomy Dissection of a Cadaver

    PubMed Central

    Deshmukh, Vishwajit; Singh, Seema; Sirohi, Neerja; Baruhee, Divya

    2016-01-01

    The obturator artery normally originates from the internal iliac artery while the obturator vein drains into the internal iliac vein. During a routine gross anatomy dissection class for undergraduate students at the All India Institute of Medical Sciences, New Delhi, India, in 2016, a rare unilateral variation in the obturator vasculature was found in a female cadaver of approximately 55 years of age. In this case, the left obturator artery originated from the superior gluteal artery and the left obturator vein drained into the external iliac vein. Knowledge of such variations is necessary during hernia procedures, ligation of the internal iliac artery and muscle graft surgeries. PMID:27606118

  17. Variation in the Obturator Vasculature During Routine Anatomy Dissection of a Cadaver.

    PubMed

    Deshmukh, Vishwajit; Singh, Seema; Sirohi, Neerja; Baruhee, Divya

    2016-08-01

    The obturator artery normally originates from the internal iliac artery while the obturator vein drains into the internal iliac vein. During a routine gross anatomy dissection class for undergraduate students at the All India Institute of Medical Sciences, New Delhi, India, in 2016, a rare unilateral variation in the obturator vasculature was found in a female cadaver of approximately 55 years of age. In this case, the left obturator artery originated from the superior gluteal artery and the left obturator vein drained into the external iliac vein. Knowledge of such variations is necessary during hernia procedures, ligation of the internal iliac artery and muscle graft surgeries. PMID:27606118

  18. Stress analysis in oral obturator prostheses: imaging photoelastic

    NASA Astrophysics Data System (ADS)

    Pesqueira, Aldiéris Alves; Goiato, Marcelo Coelho; dos Santos, Daniela Micheline; Haddad, Marcela Filié; Andreotti, Agda Marobo; Moreno, Amália

    2013-06-01

    Maxillary defects resulting from cancer, trauma, and congenital malformation affect the chewing efficiency and retention of dentures in these patients. The use of implant-retained palatal obturator dentures has improved the self-esteem and quality of life of several subjects. We evaluate the stress distribution of implant-retained palatal obturator dentures with different attachment systems by using the photoelastic analysis images. Two photoelastic models of the maxilla with oral-sinus-nasal communication were fabricated. One model received three implants on the left side of the alveolar ridge (incisive, canine, and first molar regions) and the other did not receive implants. Afterwards, a conventional palatal obturator denture (control) and two implant-retained palatal obturator dentures with different attachment systems (O-ring; bar-clip) were constructed. Models were placed in a circular polariscope and a 100-N axial load was applied in three different regions (incisive, canine, and first molar regions) by using a universal testing machine. The results were photographed and analyzed qualitatively using a software (Adobe Photoshop). The bar-clip system exhibited the highest stress concentration followed by the O-ring system and conventional denture (control). Images generated by the photoelastic method help in the oral rehabilitator planning.

  19. Oral function after maxillectomy and reconstruction with an obturator.

    PubMed

    Kreeft, A M; Krap, M; Wismeijer, D; Speksnijder, C M; Smeele, L E; Bosch, S D; Muijen, M S A; Balm, A J M

    2012-11-01

    Maxillectomy defects can be reconstructed by a prosthetic obturator or (free) flap transfer, but there is no consensus about the optimal method. This study evaluated 32 maxillectomy patients with prosthetic obturation regarding function (mastication, subjective oral and swallowing complaints and maximal mouth opening). Outcomes were related to the extent of the resection (Brown maxillectomy classification), dentition and history of adjuvant radiotherapy. Maxillectomy defects ranged from 2-1 to 4B on the Brown classification, and most had a defect graded as 2-A or 2-B. Mean mixing ability test after 10 chewing strokes was 24.2 and after 20 chewing strokes 19.7, which compares to edentulous healthy individuals. None of the outcomes was influenced by Brown classification. Radiotherapy negatively influenced mean maximal mouth opening (29.1mm versus 40.9 mm, p=0.017) and subjective outcomes. Edentate obturated patients had worse outcomes than dentate patients, measured by mixing ability test and questionnaire. In conclusion, mastication after obturator reconstruction of a maxillectomy defect is comparable to mastication with full dentures. Size of the maxillectomy defect did not significantly influence functional outcome, but adjuvant radiotherapy resulted in worse mouth opening and self-reported oral and swallowing problems. Residual dentition had a positive influence on mastication and subjective outcomes. PMID:22939876

  20. [The epidemiology of malaria in Bursa.].

    PubMed

    Alver, Oktay; Akalin, Halis; Mistik, Reşit; Helvaci, Safiye; Töre, Okan

    2005-01-01

    Malaria is still one of the important public health problems in Anatolia. Since Bursa is a well-developed industrial and agricultural province in the Marmara region, migration rate to this region from eastern and southeastern regions of Turkey is quite high. In this retrospective study, malaria cases detected by the Malaria Control Unit Division of the Bursa Health Directorship from 1986-2002 have been evaluated. The total number of slide-positive cases was 700. Out of the 700 cases of malaria, 695 (99.3%) were found to have been caused by Plasmodium vivax and 5 (0.7%), by P. falciparum. Of these cases, 68.8% were male and of the males, 18.4% were soldiers. The majority of the cases (70.5%) had come from the southeastern region of Anatolia. Positivity rates were found to be highest in 1995 (21%) and 1996 (18.5%). In this study, we have reviewed the malaria cases according to age, gender and occupation as well as transmission characteristics, locality and source of infection. PMID:17160827

  1. Comparative Evaluation of Obturating Techniques in Primary Teeth: An in vivo Study

    PubMed Central

    Vashista, Kriti; Sachdev, Vinod

    2015-01-01

    ABSTRACT Aim: The present study was undertaken to compare two methods of obturation in primary teeth by using lentulospirals and pressure syringe, radiographically. Materials and methods: Sixty teeth in subjects with mean age of 5.88 ± 1.58 years were obturated randomly using two different obturating techniques, i.e. group I: Thirty teeth obturated with pressure syringe, and group II: Thirty teeth obturated with lentulospiral. Quality of obturation and presence or absence of voids were assessed by taking radiographs after obturation was done using both the techniques. Results of quality of obturation were statistically analyzed using Chi-square test and Mann-Whitney’s test, whereas voids were analyzed using Chi-square test. Results: No statistically significant difference between the quality of obturation using pressure syringe or lentulospiral (p > 0.05) was observed. However, significantly higher number of voids were found for lentulospiral technique as compared to pressure syringe (p < 0.01). Conclusion: Both the techniques were found to be equally efficient statistically, though lentulospiral produced more voids. How to cite this article: Vashista K, Sandhu M, Sachdev V. Comparative Evaluation of Obturating Techniques in Primary Teeth: An in vivo Study. Int J Clin Pediatr Dent 2015;8(3): 176-180. PMID:26628851

  2. Determination of a Central Avascular Triangle within the Obturator Foramen: A Radioanatomic Study

    PubMed Central

    Nyangoh Timoh, Krystel; Bader, Georges; Fauconnier, Arnaud; Barrau, Vincent; Delmas, Vincent; Touboul, Cyril

    2015-01-01

    Purpose To map the vascular anatomy of the obturator foramen using fixed anatomic landmarks. Method Twenty obturator regions were dissected in 10 fresh female cadavers after vascular blue dye injection in five cadavers (50%). Furthermore, 104 obturator regions were reconstructed by angiotomodensitometry from 52 women under investigation for suspected arterial disease. The anatomy of the obturator region was mapped by measuring the distance of vascular structures from the middle of the two branches of the ischiopubic bone, which were used as fixed landmarks. Results The bifurcation of the obturator artery was at a mean (SD) distance of 30.0 mm (4.5) from the middle of the ischiopubic branch (MISP). The anterior branch of the obturator vessels was 15.2 mm (10.1) from the MISP. The posterior branch of the obturator vessels was 5.5 mm (4.0) and 23.6 mm (8.7) from the middle of the outer edge of the obturator foramen (MOE) and the MISP, respectively. Using 5° and 95° percentiles of these measurements we defined a central avascular triangle. Conclusions Our data show that, beyond inter-individual variations, a central triangular avascular area can be identified in the obturator foramen between the posterior and anterior obturator artery using fixed landmarks. PMID:26624993

  3. Creating a digitized database of maxillofacial prostheses (obturators): A pilot study

    PubMed Central

    Sumita, Yuka; Aswehlee, Amel; Yoshi, Shigen; Taniguchi, Hisashi

    2016-01-01

    PURPOSE This study aimed to create a digitized database of fabricated obturators to be kept for patients' potential emergency needs. MATERIALS AND METHODS A chairside intraoral scanner was used to scan the surfaces of an acrylic resin obturator. The scanned data was recorded and saved as a single standard tessellation language file using a three-dimensional modeling software. A simulated obturator model was manufactured using fused deposition modeling technique in a three-dimensional printer. RESULTS The entire obturator was successfully scanned regardless of its structural complexity, modeled as three-dimensional data, and stored in the digital system of our clinic at a relatively small size (19.6 MB). A simulated obturator model was then accurately manufactured from these data. CONCLUSION This study provides a proof-of-concept for the use of digital technology to create a digitized database of obturators for edentulous maxillectomy patients. PMID:27350857

  4. A comparison of thermoplastic obturation techniques: adaptation to the canal walls.

    PubMed

    Weller, R N; Kimbrough, W F; Anderson, R W

    1997-11-01

    The purpose of this study was to directly compare the ability of the three types of Thermafil obturators, the Obtura II thermoplasticized injectable technique, and the lateral condensation technique to obturate a standardized root canal. A split-tooth model was constructed and the root canal was obturated 20 times with each technique. The quality of each obturation was graded according to established criteria of adaptation. Statistical analysis of the results indicated that all the techniques were significantly different from each other (p < 0.0001) except for the plastic and titanium Thermafil groups (p > 0.05), which were similar. Based on the evaluated criteria, the Obtura II injectable technique demonstrated the best adaptation to the prepared root canal. This group was followed in order by the plastic and titanium Thermafil obturators, the stainless steel Thermafil obturators, and finally by the lateral condensation technique. PMID:9587313

  5. Management of maxillectomy defect with a hybrid hollow bulb obturator

    PubMed Central

    Singh, Kamleshwar; Singh, Saumyendra V; Mishra, Niraj; Agrawal, Kaushal Kishor

    2013-01-01

    A woman having already undergone maxillectomy came to the department complaining of difficulty in eating and speech. During the construction of an obturator, the bulb area should be hollowed to reduce weight so that the teeth and supporting tissues are not stressed unnecessarily. The conventional open design drains fluid from the adjacent mucosa, possibly increasing the weight of the prosthesis, and is difficult to clean. The closed bulb design does not drain secretions and may cause obstruction and susceptibility to infection in the paranasal and pharyngeal regions, though it is easier to maintain. An alternative to the two designs, combining their advantages, is presented in this report. As the open hollow part of the obturator was shallow, it was easy to clean. Making the inferior part of the bulb hollow and closed led to a reduction in the overall weight of the prosthesis while increasing its resonance. PMID:23436886

  6. [The conflict between obturator nerve and ovary: a cadaveric and radioanatomic study].

    PubMed

    Jendrzejewski, F; Peltier, J; Havet, E; Page, C; Foulon, P; Gondry, J; Le Gars, D

    2013-06-01

    The aim of this study was to describe the anatomical relationships between the ovary and the obturator nerve in its intrapelvic portion. Seven embalmed cadavers were dissected; 20 MRIs were then analyzed. The main distance between the lateral pole of the ovary and the obturator nerve was 29 mm. The authors describe various etiologies responsible for obturator neuralgia. An underdiagnosed cause is gonadal hypertrophy. PMID:23796698

  7. A Successful Endodontic Outcome with Non-Obturated Canals

    PubMed Central

    Asgary, Saeed; Fazlyab, Mahta

    2015-01-01

    This case report represents the outcome of endodontic treatment in an infected mandibular molar with periradicular periodontitis and inherent poor prognosis of root canal treatment due to severe root curvature. The tooth was successfully treated by leaving the mesial root non-obturated, the canal orifices were coronally sealed with calcium enriched mixture cement and a definitive coronal amalgam restoration, was placed at the subsequent visit. PMID:26213546

  8. In vitro evaluation of carrier based obturation technique: a CBCT study

    PubMed Central

    Gambarini, Gianluca; Piasecki, Lucila; Schianchi, Giovanni; Di Nardo, Dario; Miccoli, Gabriele; Al Sudani, Dina; Di Giorgio, Roberto; Testarelli, Luca

    2016-01-01

    Summary Aim The goal of the study was to compare the ability of two different carrier based obturation (CBO) techniques to reach working length and fill in three-dimensions root canal systems, by using CBCT. Materials and Methods Twenty-six extracted molars were scanned with CBCT and 40 curved canals were selected (between 30° and 90°) and divided in two similar groups (n=20). All canals were prepared up to size 25 taper .06 using nickel-titanium instrumentation. The canals in the Group SC were obturated using Soft-Core obturators (Kerr, Romulus, Mi, USA), while Group TH canals (n= 20) were obturated using Thermafil Endodontic Obturators (Tulsa Dental Products, Tulsa, OK, USA), strictly following manufacturers’ instructions for use. The obturations were analyzed by means of CBCT to measure the distance from the apical limit of obturation to the apical foramen and the presence of voids inside root canals. Results There was no significant difference between the two groups in the mean distance of the apical extent of the obturation (t test, p>0.05). Overfilling occurred in only 3 cases (2 in Group TH and 1 in Group SC). The percentages of voids in both groups were very low with no significant difference (Z test, p>0.05). Conclusions The two tested CBO techniques showed similar positive results in terms of performance, even if, after checking with verifiers, in most cases the size of the selected Soft-Core obturator was one size smaller than Thermafil. PMID:27486506

  9. Inflatable hollow obturator prostheses for patients undergoing an extensive maxillectomy: a case report

    PubMed Central

    Hou, Yue-Zhong; Huang, Zhi; Ye, Hong-Qiang; Zhou, Yong-Sheng

    2012-01-01

    The presence of a large palatal or maxillary defect after partial or total maxillectomy for tumor, trauma or congenital deformation poses a challenge to prosthodontists, particularly when the use of an implant cannot be considered. This case report described the use of an air valve in a hollow silicone obturator to manufacture an inflatable obturator that could be extended further into undercut area to retain itself. The inflatable obturator exhibited adequate retention, stability and border sealing, thereby improving the masticatory, pronunciation and swallowing functions of patients. It may be a suitable alternative treatment option to an implant-retained obturator. PMID:22653550

  10. A hollow-bulb interim obturator for maxillary resection. A case report.

    PubMed

    Rilo, B; Dasilva, J L; Ferros, I; Mora, M J; Santana, U

    2005-03-01

    The treatment of hemimaxillectomy patients include the construction of an interim obturator in the wound healing period. With the aim of simplifying this process, we describe construction of an obturator in a short single visit, in the dental chair with no need for impressions or for laboratory services. The obturator comprises: (i) the surgical obturator and (ii) a hollow light-cured resin bulb built onto the base, and providing a large surface for bonding of the soft reline material. The advantages of this approach are rapid construction and ease of ongoing adjustment during the healing process. PMID:15707435

  11. Obturator Compartment Syndrome Secondary to Pelvic Hematoma After Robot-Assisted Laparoscopic Radical Prostatectomy

    PubMed Central

    Song, Jun H.; Abbott, Daniel; Gewirtz, Eric; Hauck, Ellen; Eun, Daniel D.

    2016-01-01

    Abstract Obturator nerve injury is a known injury after robot-assisted laparoscopic radical prostatectomy (RALP) and patients often present with motor and sensory deficits in the immediate postoperative period. We describe a 65-year-old male who presented with motor deficits, indicative of obturator neurapraxia after RALP upon waking from anesthesia. Work-up revealed an expansile hematoma possibly compressing the obturator nerve. After evacuation of the hematoma, the patient had immediate improvement of his neurologic deficits. Our patient's clinical vignette illustrates the importance of considering postsurgical hematoma in the differential diagnosis when patients present with signs and symptoms of obturator neurapraxia after RALP. PMID:27579444

  12. Obturator Compartment Syndrome Secondary to Pelvic Hematoma After Robot-Assisted Laparoscopic Radical Prostatectomy.

    PubMed

    Song, Jun H; Kaplan, Joshua R; Abbott, Daniel; Gewirtz, Eric; Hauck, Ellen; Eun, Daniel D

    2016-01-01

    Obturator nerve injury is a known injury after robot-assisted laparoscopic radical prostatectomy (RALP) and patients often present with motor and sensory deficits in the immediate postoperative period. We describe a 65-year-old male who presented with motor deficits, indicative of obturator neurapraxia after RALP upon waking from anesthesia. Work-up revealed an expansile hematoma possibly compressing the obturator nerve. After evacuation of the hematoma, the patient had immediate improvement of his neurologic deficits. Our patient's clinical vignette illustrates the importance of considering postsurgical hematoma in the differential diagnosis when patients present with signs and symptoms of obturator neurapraxia after RALP. PMID:27579444

  13. Comparative Evaluation of Fracture Resistance of Endodontically Treated Teeth Obturated with Resin Based Adhesive Sealers with Conventional Obturation Technique: An In vitro Study

    PubMed Central

    Langalia, Akshay K; Dave, Bela; Patel, Neeta; Thakkar, Viral; Sheth, Sona; Parekh, Vaishali

    2015-01-01

    Background: To compare fracture resistance of endodontically treated teeth obturated with different resin-based adhesive sealers with a conventional obturation technique. Materials and Methods: A total of 60 Single canaled teeth were divided into five groups. The first group was taken as a negative control. The rest of the groups were shaped using ProFile rotary files (Dentsply Maillefer, Ballaigues, Switzerland). The second group was obturated with gutta-percha and a ZOE-based sealer Endoflas FS (Sanlor Dental Products, USA). The third group was obturated with gutta-percha and an epoxy-based sealer AH Plus (Dentsply, DeTrey, Germany). The fourth group was obturated with Resilon (Pentron Clinical Technologies, Wallingford, CT) and RealSeal sealer (Pentron Clinical Technologies). The fifth group was obturated with EndoREZ points and EndoREZ sealer (both from Ultradent, South Jordan, UT). Roots were then embedded into acrylic blocks and were then fixed into a material testing system and loaded with a stainless steel pin with a crosshead speed of 5 mm/min until fracture. The load at which the specimen fractured was recorded in Newtons. Results: It was found that forces at fracture were statistically significant for the newer resin systems, Resilon, and EndoREZ. Conclusion: It was concluded that roots obturated with newer resin systems (Resilon and EndoREZ) enhanced the root strength almost up to the level of the intact roots. PMID:25859099

  14. New hosts for the mite Ornithonyssus bursa in Argentina.

    PubMed

    Santillán, M Á; Grande, J M; Liébana, M S; Martínez, P; Díaz, L A; Bragagnolo, L A; Solaro, C; Galmes, M A; Sarasola, J H

    2015-12-01

    The mite Ornithonyssus bursa (Berlese) (Mesostigmata: Macronyssidae) is considered a poultry pest causing important infestations in chickens and it is considered a potential vector of arbovirus. Despite being considered a common parasite in wild birds, there is scarce published information about its potential hosts and effects on them. Here we present new bird hosts for O. bursa, assess the presence of Alphavirus, Flavivirus and Bunyavirus in mites from three host species, and discuss its potential impact on wild bird populations. We found O. bursa infecting five raptor and six passerine wild bird species. For nine of these species, this is the first record of infection by O. bursa. Although all analysed mites were negative for the examined arboviruses, the small sample size of mites does not allow further conclusions at the present moment. Because of the general nature of this ectoparasite, its presence in migratory long dispersal and endangered bird species, and the seropositivity for arboviruses in some of the species studied here, we consider it critical to assess the role of O. bursa and other ectoparasites as vectors and reservoirs of pathogens and as potential deleterious agents in wild bird populations. PMID:26258483

  15. Spontaneous Obturator Internus Hematoma–a Rare Cause of Hip Pain: Case Report

    PubMed Central

    Chouhan, Varun; Mandliya, Alok; Chouhan, Kiran

    2015-01-01

    Introduction: Obturator internus hematoma(OIH) is a very rare entity. In past it has been reported in hemophilics, we firstly report obturator internus hematoma in a patient of stroke on antiplatelet drugs. Obturator internus hematoma can cause severe hip pain with normal X-rays, so it should kept in differential diagnosis of hip pain with normal radiographs. Case report: 74 year old male with history of recent onset stroke presented to us with left side weakness and left hip pain. Radiographs were normal. MRI revealed left obturator internus hematoma. Patient was treated conservatively by stopping antiplatelet medications. Conclusion: Obturator internus hematoma is very rare but very important entity to recognise as it may mimic myositis or abscess around hip joint. Failing to recognize it and treating patient surgically may lead to untoward consequences. PMID:27299105

  16. A clinical trial of cold lateral compaction with Obtura II technique in root canal obturation

    PubMed Central

    Ansari, Bilal Bakht; Umer, Fahad; Khan, Farhan Raza

    2012-01-01

    Introduction: The purpose of obturation of the prepared root canal space is to prevent coronal leakage and bacterial contamination and to seal the apex from the periapical tissue fluids. Cold lateral technique has been considered to be a gold standard, however considering its limitations various thermoplasticized gutta-percha techniques have been recommended. This study compares radiographic quality of obturation in molar teeth, obturated with cold lateral condensation and thermoplasticized injectable gutta-percha technique (Obtura II system). Materials and Methods: Sixty patients were equally divided into two groups, Group A obturated with Cold lateral condensation technique and group B with Obtura II. Periapical radiographs were obtained immediately after the obturation using paralleling device method. The radiographs were examined by an observer, who was blinded to the group allocation. Data was compared using χ2 (Chi square) test and Independent sample t test was used to compare the mean ages. Results: Both groups were comparable in all respects such as tooth type, preoperative diagnosis and preoperative pain (P>0.05); however, more pre-operative radiolucency cases were allocated to Obtura II (P<0.05). There was no difference between the two groups, both in terms of postoperative voids as well as apical termination of the obturation (P>0.05). Conclusion: Within the limitations of the study, it was found that statistically there was no significant difference between cold lateral and obtura II technique, in terms of post obturation voids and apical termination, as observed in radiographs. PMID:22557815

  17. The Influence of Obturators on the Respiration of Patients with Maxillary Defects: A Clinical Study

    PubMed Central

    Qian, Yumei; Zhang, Fuqiang; Jiao, Ting

    2015-01-01

    The study evaluated the effects of obturators on respiratory function by analyzing the changes in nasal anatomic structures and physiologic function in maxillectomy patients with and without obturators. Twenty-six patients who underwent maxillectomy were chosen and rehabilitated with obturators by a single maxillofacial prosthodontist. The geometric shape of the nasal cavity, the nasal airway resistance, and the ratio of residual volume to total lung capacity (RV/TLC) were evaluated using acoustic rhinometry, rhinomanometry, and a pulmonary function test apparatus, respectively. All patients were tested twice, with and without their obturators. The results were statistically analyzed with a paired t-test. The nasal cavities (0–7 cm to the anterior nostril) of the patients with obturators had a significantly smaller volume ([-8.92, -0.60], P = 0.027), smaller effective nasal cross-sectional area MCA2 ([-3.80, -1,81], P<0.0001), increased airflow in the nasal cavity ([17.76, 147.39], P = 0.015), reduced nasal airway resistance ([-0.11, -0.02], P = 0.009), and reduced RV/TLC ([-5.32, -1.30], P = 0.004) compared with the patients without obturators. According to the results of this study, obturators can improve respiratory function by effectively decreasing the volume of enlarged nasal cavities as well as the nasal air resistance and volume of anatomical dead space after maxillectomy. Trial Registration ChiCTR.org ChiCTR-PRNRC-14005136 PMID:26011127

  18. The influence of obturators on the respiration of patients with maxillary defects: a clinical study.

    PubMed

    Dong, Xian; Zhu, Chenyuan; Qian, Yumei; Zhang, Fuqiang; Jiao, Ting

    2015-01-01

    The study evaluated the effects of obturators on respiratory function by analyzing the changes in nasal anatomic structures and physiologic function in maxillectomy patients with and without obturators. Twenty-six patients who underwent maxillectomy were chosen and rehabilitated with obturators by a single maxillofacial prosthodontist. The geometric shape of the nasal cavity, the nasal airway resistance, and the ratio of residual volume to total lung capacity (RV/TLC) were evaluated using acoustic rhinometry, rhinomanometry, and a pulmonary function test apparatus, respectively. All patients were tested twice, with and without their obturators. The results were statistically analyzed with a paired t-test. The nasal cavities (0-7 cm to the anterior nostril) of the patients with obturators had a significantly smaller volume ([-8.92, -0.60], P = 0.027), smaller effective nasal cross-sectional area MCA2 ([-3.80, -1,81], P < 0.0001), increased airflow in the nasal cavity ([17.76, 147.39], P = 0.015), reduced nasal airway resistance ([-0.11, -0.02], P = 0.009), and reduced RV/TLC ([-5.32, -1.30], P = 0.004) compared with the patients without obturators. According to the results of this study, obturators can improve respiratory function by effectively decreasing the volume of enlarged nasal cavities as well as the nasal air resistance and volume of anatomical dead space after maxillectomy. PMID:26011127

  19. Influence of immediate and permanent obturators on facial contours: a case series

    PubMed Central

    2009-01-01

    Introduction Rehabilitation of patients after surgical removal of carcinomas in facial skeleton is one of the most difficult therapies of the stomatognathic system. Significant deformation of tissues, dysfunctions of the stomatognathic system with concurrent biological imbalance of the oral cavity environment frequently affect the treatment to become arduous. Scars and contraction of the oral crevice may cause serious psychological deficiencies that are another aspect of the treatment schedule. Case presentation Three Turkish patients ages 46 (male), 61 (male) and 24 (female) who experienced similar operations were rehabilitated with maxillary obturators. The situations was ideal for patient no 1. Patient no 2 could not receive an immediate obturator and patient no 3 rejected using permanent obturator. The paper describes the advantages of a surgical obturator which is constructed before operation and inserted immediately following partial maxillectomy and expresses long term complications when neglecting the use of definite obturator prosthesis, in the light of three cases. Conclusion The primary objective of oral-maxillofacial and plastic surgeons and prosthodontists when treating tumors is to eliminate disease and to improve the quality of life including the facial contours which influences the psychological condition of patient. Neglecting immediate obturator construction may cause serious facial appearance problems due to soft tissue contracture. When permanent obturator is rejected, serious contracture of soft tissues and facial disharmony is inevitable. PMID:19121224

  20. Comparative analysis of carrier-based obturation and lateral compaction: a retrospective clinical outcomes study.

    PubMed

    Hale, Robert; Gatti, Robert; Glickman, Gerald N; Opperman, Lynne A

    2012-01-01

    The purpose of this retrospective study was to compare the outcome of primary endodontic treatment using a standardized cleaning and shaping technique and obturation with either lateral compaction or carrier-based obturation. Patients received primary endodontic treatment in the predoctoral dental clinic using a standardized cleaning and shaping protocol. All root canals were obturated using AH Plus(TM) sealer with lateral compaction of gutta-percha (LC) or carrier-based obturation (CBO). A total of 205 cases met the inclusion criteria. 71 teeth in 60 patients were recalled after 2 years and evaluated both clinically and radiographically by two independent examiners. Success was defined as a lack of clinical symptoms and a normal periodontal ligament space or reduction in size of a previously existing periapical radiolucency. Chi-square and logistic regression were used for statistical analysis with a significance level of P < 0.05. There was no difference in success rates between cases obturated with LC or CBO (P = 0.802); overall success rate was 83%. Molars had a significantly lower success rate (53%) than premolar and anterior teeth (89%) (P = 0.005), irrespective of the obturation technique used. When a standardized cleaning and shaping protocol was used by predoctoral dental students in a controlled university setting, there was no difference in success rates between cases obturated with LC or CBO. PMID:22567010

  1. An Unusual Prepatellar Bursa Swelling: Patellar Button Dissociation and Migration

    PubMed Central

    Hester, Thomas; Moftah, Farid

    2016-01-01

    Implant loosening is not a new phenomenon, nor is implant migration; however they are rarely seen after knee arthroplasty surgery. Complications with patellar buttons have been reported before with peg failure, loosening, and patella fracture; however extra-articular migration is extremely rare. We report an unusual case of patellar button migration 11 years after total knee arthroplasty to the prepatellar bursa. PMID:26885422

  2. [Tactics of preoperative infusion therapy in obturation jaundice].

    PubMed

    Iakovlev, A Iu; Semenov, V B; Emel'ianov, N V; Mokrov, K V; Akulenko, S V; Zarechnova, N V

    2011-10-01

    The influence of the infusion therapy content on a hepatic function of bile outflow (HFBO), a bilirubin content and the enzymes activity in obturation jaundice in 139 patients was studied up. In 54 patients (the first group) a Ringer solution and 10% solution of glucose in 1:1 ratio were applied; in 37 patients (the second group) - a sterofundin-G-5 solution; in 48 patients (the third group) - remaxol in a dose of 800 ml/day. Application of sterofundin-G-5 and remaxol as a component of infusion therapy have promoted a bile outflow intensity enhancement in early postoperative period in comparison with such while Ringer solution and 10% solution of glucose application. Remaxol more effectively have eliminated a hyperbilirubinemia, enzymemia and a HFBO disorder, than sterofundin-G-5. PMID:22295543

  3. Stress analysis in oral obturator prostheses, part II: photoelastic imaging

    NASA Astrophysics Data System (ADS)

    Pesqueira, Aldiéris Alves; Goiato, Marcelo Coelho; da Silva, Emily Vivianne Freitas; Haddad, Marcela Filié; Moreno, Amália; Zahoui, Abbas; dos Santos, Daniela Micheline

    2014-06-01

    In part I of the study, two attachment systems [O-ring; bar-clip (BC)] were used, and the system with three individualized O-rings provided the lowest stress on the implants and the support tissues. Therefore, the aim of this study was to assess the stress distribution, through the photoelastic method, on implant-retained palatal obturator prostheses associated with different attachment systems: BOC-splinted implants with a bar connected to two centrally placed O-rings, and BOD-splinted implants with a BC connected to two distally placed O-rings (cantilever). One photoelastic model of the maxilla with oral-sinus-nasal communication with three parallel implants was fabricated. Afterward, two implant-retained palatal obturator prostheses with the two attachment systems described above were constructed. Each assembly was positioned in a circular polariscope and a 100-N axial load was applied in three different regions with implants by using a universal testing machine. The results were obtained through photograph record analysis of stress. The BOD system exhibited the highest stress concentration, followed by the BOC system. The O-ring, centrally placed on the bar, allows higher mobility of the prostheses and homogeneously distributes the stress to the region of the alveolar ridge and implants. It can be concluded that the use of implants with O-rings, isolated or connected with a bar, to rehabilitate maxillectomized patients allows higher prosthesis mobility and homogeneously distributes the stress to the alveolar ridge region, which may result in greater chewing stress distribution to implants and bone tissue. The clinical implication of the augmented bone support loss after maxillectomy is the increase of stress in the attachment systems and, consequently, a higher tendency for displacement of the prosthesis.

  4. A hollow definitive obturator fabrication technique for management of partial maxillectomy

    PubMed Central

    Patil, Smita Pravinkumar

    2012-01-01

    Maxillary obturator prosthesis is the most frequent treatment option for management of partial or total maxillectomy. Heavy weight of the obturators is often a dislocating factor. Hollowing the prosthesis to reduce its weight is the well established fact. The alternate technique to hollow-out the prosthesis has been described in this article which is a variation of previously described processing techniques. A pre-shaped wax-bolus was incorporated inside the flasks during packing of the heat-polymerized acrylic resin to automatically create the hollow space. The processing technique described is a single step flasking procedure to construct a closed-hollow-obturator prosthesis as a single unit. To best understand the technique, this article describes management of a patient who had undergone partial maxillectomy secondary to squamous cell carcinoma rehabilitated with a hollow-obturator prosthesis. PMID:23236579

  5. Split Hollow Bulb Obturator to Rehabilitate Maxillary Defect: A Case Report.

    PubMed

    Mohamed, Kasim; Mani, Umamaheswari; Saravanakumar, Prathibha; Kumar, S Prasanna; Arunachalam, Ravikumar

    2016-01-01

    The rehabilitation of a maxillectomy patient involves meticulous treatment planning and designing. Lack of retention and facial support and limited mouth opening are the major issues that lead to functional and psychological trauma in post-maxillectomy patients. The successful rehabilitation of a maxillary defect includes restoring the function, esthetics, and a complete obturation of the defect, enabling the patient to feed without nasal regurgitation. This case report describes the fabrication of an obturator with a modified design, namely a split-antral hollow bulb obturator and oral part that is retained with a ball attachment, for a patient with right-side acquired maxillary defect due to recurrent myxoma. The primary advantage of this modification is enhanced facial support and a self-retentive antral obturation that improved the quality of life of the patient after an extensive maxillectomy. PMID:27433414

  6. Split Hollow Bulb Obturator to Rehabilitate Maxillary Defect: A Case Report

    PubMed Central

    Mani, Umamaheswari; Saravanakumar, Prathibha; Kumar, S Prasanna; Arunachalam, Ravikumar

    2016-01-01

    The rehabilitation of a maxillectomy patient involves meticulous treatment planning and designing. Lack of retention and facial support and limited mouth opening are the major issues that lead to functional and psychological trauma in post-maxillectomy patients. The successful rehabilitation of a maxillary defect includes restoring the function, esthetics, and a complete obturation of the defect, enabling the patient to feed without nasal regurgitation. This case report describes the fabrication of an obturator with a modified design, namely a split-antral hollow bulb obturator and oral part that is retained with a ball attachment, for a patient with right-side acquired maxillary defect due to recurrent myxoma. The primary advantage of this modification is enhanced facial support and a self-retentive antral obturation that improved the quality of life of the patient after an extensive maxillectomy. PMID:27433414

  7. [MORPHOLOGICAL CHANGES OF THE LIVER IN OBTURATION JAUNDICE, CAUSED BY CHOLEDOCHOLITHIASIS, DEPENDING ON ITS DURATION].

    PubMed

    Sipliviy, V A; Yevtushenko, D V; Naumova, O V; Andreyeshchev, S A; Yevtushenko, A V

    2016-02-01

    Abstract The results of surgical treatment of 184 patients for obturation jaundice, caused by choledocholithiasis, were analyzed. Morphological changes of the liver were studied in 20 patients. There were three groups of patients delineated, depending on the obturation jaundice duration: up to 7 days, from 8 to 14 days, more than 15 days, and also a group of patients after the bile outflow restoration. The obturation jaundice occurrence in choledocholithiasis is accompanied by significant morphological changes in the liver, severity of which is enhancing while the obturation jaundice persistence increasing. While persistence of obturation jaundice through 8 days and more the connective tissue volume is enhancing, a relative volume of hepatocytes is reducing and a stromal-parenchymatous index is increasing. The bile outflow restoration secures significant reduction of intensity of alterative and inflammatory changes in hepatic parenchyma, as well as activation of reparative processes in the tissue. In cholangitis, caused by P. aeruginosa and E. coli, according to morphological investigations data, in the liver a diffuse purulent cholangitis on background of chronic changes in accordance to duration of the obturation jaundice persists. PMID:27244912

  8. Assessment of swallowing and masticatory performance in obturator wearers: a clinical study

    PubMed Central

    Vero, Nungotso; Mishra, Niraj; Singh, Kamleshwar; Jurel, Sunit Kumar; Kumar, Vijay

    2015-01-01

    PURPOSE To assess function by identifying changes in swallowing and masticatory performance in maxillary obturator prosthesis wearers. MATERIALS AND METHODS Sixty subjects were recruited for the study, of which 20 were obturator wearers, 20 were completely dentulous and 20 had removable partial/complete dentures with similar Eichner's Index. Swallowing ability was evaluated with and without obturator using the "Water Drinking Test"; Masticatory performance was evaluated with the Sieve test; and maximum occlusal force was recorded with the help of a digital bite sensor. The data was analyzed using the Statistical Package for Social Science version 15.0 with a confidence level at 95%. RESULTS Profile, behavior of drinking and time taken to drink were significantly improved (P<.001) in subjects after wearing obturator. Masticatory performance was not significantly different (P=.252) in obturator wearer when compared with dentulous or removable partial/complete denture wearer, but significantly (P<.001) high inter group difference in maximum occlusal force existed. Correlation between masticatory performance and maximum occlusal force was not significant (P=.124). CONCLUSION Swallowing ability was significantly improved after wearing obturator but masticatory performance was not significantly different from those having similar occlusal support zone in their dentition. PMID:25722831

  9. Sealing ability of a novel hydrophilic vs. conventional hydrophobic obturation systems: A bacterial leakage study

    PubMed Central

    Hegde, Vibha; Arora, Shashank

    2015-01-01

    Aim: Comparative assessment of apical sealing ability of a novel Smart-Seal System, Resilon, and conventional Gutta-Percha system using a bacterial leakage model. Materials and Methods: Seventy freshly extracted human single rooted teeth with fully formed apices were randomly divided into three groups (20 each) and two control groups (5 positive and 5 negative). Teeth were de-coronated, and roots were standardized to a working length of 16 mm. Root canal preparation was done with rotary pro-taper file system in all groups. Group A was obturated using Smart-Seal system (Hydrophilic), Group B using Resilon/Epiphany system (Hydrophilic), and Group C using Gutta-Percha (GP)/AH plus system (Hydrophobic) in a single cone technique. Using Enterococcus faecalis, a split chamber bacterial leakage model was developed to evaluate the sealing ability of three obturation systems. Samples will be monitored every 24 hours for 60 days. Results: All three groups have shown leakage. Novel Smart-Seal System and Resilon have shown similar results and relatively lesser samples leaked in comparison to GP obturations at the end of the observation period. There was no significant difference amongst Resilon and Smart-Seal System (P > 0.05) but there was a significant difference amongst them when compared to GP obturations (P < 0.05). Conclusion: Hydrophilic obturations of the root canal shows a better resistance to bacterial leakage as compared to hydrophobic obturations. PMID:25657530

  10. A Case of External Compression of Femoral Vein by the Enlarged Iliopsoas Bursa with Long Term Edema

    PubMed Central

    Yamamoto, Kiyohito; Tanaka, Keizo; Hiraiwa, Takane; Tanaka, Kuniyoshi

    2015-01-01

    The iliopsoas bursa is the largest bursa in the region of hip joint. It is unusual that these bursa become symptomatic. However the bursa can compress femoral vein, leading to lower extremity edema. A 58-year-old man was referred to our department for his unilateral leg edema which had been treated as deep vein thrombosis without any favorable response. Magnetic resonance angiography was performed, which demonstrated enlarged iliopsoas bursa compressing his femoral vein. Surgical removal of the bursa was performed. The postoperative course was uneventful, and the patient is free from symptoms with no evidence of recurrence. PMID:26131029

  11. Rapid Destruction of the Hip Joint Accompanied by an Enlarged Iliopsoas Bursa in a Healthy Man

    PubMed Central

    Kim, Ju-Oh

    2014-01-01

    Association between enlarged iliopsoas bursa and hip lesions such as osteoarthritis of the hip or femoral head necrosis is infrequently seen. Enlarged iliopsoas bursa with a rapidly destructive arthropathy is claimed to be seen only in patients with rheumatoid arthritis. In this paper, we report a patient with a rapidly destructive arthropathy accompanied by an enlarged iliopsoas bursa that has been misdiagnosed as an infection.

  12. High-resolution Sonographic Measurements of Lower Extremity Bursae in Chinese Healthy Young Men

    PubMed Central

    Gao, Yong-Yan; Wu, Chi-Qiu; Liu, Wei-Xing; Zhang, Lei; Li, Chun-Ling

    2016-01-01

    Background: Lower extremity bursae are very vulnerable to injury during strenuous physical exercises. Understanding the imaging characteristics of normal bursae is essential for early diagnosis of morphological abnormalities. Therefore, we evaluated the normal range of lower extremity bursae in healthy young men using high-resolution ultrasound (HR-US) imaging. Methods: Bursae in the lower extremities were examined by HR-US in 290 Chinese healthy young men with a median age of 18 years (range, 18–23 years). The bilateral suprapatellar bursa (SPB), deep infrapatellar bursa (DIPB), popliteal bursa (PB), and retrocalcaneal bursa (RCB) were imaged and measured for analysis. Results: The HR-US identification rates of the SPB, DIPB, PB, and RCB were 89.0% (517/580), 55.0% (319/580), 29.4% (171/580), and 49.5% (287/580), respectively. With the assumption that the bursae were normal in 95% of the study participants, the length and width values at the maximal cross-section of the SPB, DIPB, PB, and RCB were ≤18.00 and 6.09 mm, 8.10 and 2.11 mm, 7.67 and 3.93 mm, and 7.82 and 2.04 mm, respectively. Conclusions: Using HR-US imaging, we were able to analyze lower extremity bursae with high detection rates in healthy young men. The normal ranges of lower extremity bursa dimensions in healthy young men measured by HR-US in this study could be used as reference values for evaluation of bursa abnormalities in the lower extremity. PMID:26831233

  13. Rehabilitation of Oncology Patients with Hard Palate Defects Part 3: Construction of an Acrylic Hollow Box Obturator.

    PubMed

    Ali, Rahat; Altaie, Asmaa; Nattress, Brian

    2015-09-01

    This article will discuss the clinical stages in the fabrication of a definitive acrylic hollow box obturator to restore a hard palate defect. The first two papers described the restorative/surgical planning phase and the principles of obturator design. CPD/CLINICAL RELEVANCE: Each of the clinical stages required to make a hollow box obturator must be performed to the highest possible standard to ensure than an optimal prosthesis.is fabricated. PMID:26630859

  14. Bursae and abscess cavities communicating with the hip: diagnosis using arthrography and CT

    SciTech Connect

    Steinbach, L.S.; Schneider, R.; Goldman, A.B.; Kazam, E.; Ranawat, C.S.; Ghelman, B.

    1985-08-01

    Bursae or abscess cavities communicating with the hip joint were demonstrated by hip arthrography or by computed tomography (CT) in 40 cases. The bursae or abscess cavities were associated with underlying abnormalities in the hip, including painful hip prostheses, infection, and inflammatory or degenerative arthritis. Symptoms may be produced directly as a result of infection or indirectly as a result of inflammation or pressure on adjacent structures. Hip arthrography can confirm a diagnosis of bursae and abscess cavities communicating with the hip joint in patients with hip pain or soft-tissue masses around the groin. Differentiation of enlarged bursae from other abnormalities is important to avoid unnecessary or incorrect surgery.

  15. Dynamic intratubular biomineralization following root canal obturation with pozzolan-based mineral trioxide aggregate sealer cement.

    PubMed

    Yoo, Yeon-Jee; Baek, Seung-Ho; Kum, Kee-Yeon; Shon, Won-Jun; Woo, Kyung-Mi; Lee, WooCheol

    2016-01-01

    The application of mineral trioxide aggregates (MTA) cement during the root canal obturation is gaining concern due to its bioactive characteristic to form an apatite in dentinal tubules. In this regard, this study was to assess the biomineralization of dentinal tubules following root canal obturation by using pozzolan-based (Pz-) MTA sealer cement (EndoSeal MTA, Maruchi). Sixty curved roots (mesiobuccal, distobuccal) from human maxillary molars were instrumented and prepared for root canal obturation. The canals were obturated with gutta-percha (GP) and Pz-MTA sealer by using continuous wave of condensation technique. Canals obturated solely with ProRoot MTA (Dentsply Tulsa Dental) or Pz-MTA sealer were used for comparison. In order to evaluate the biomineralization ability under different conditions, the PBS pretreatment before the root canal obturation was performed in each additional samples. At dentin-material interfaces, the extension of intratubular biomineralization was analyzed using scanning electron microscopy (SEM) and energy dispersive spectroscopy. When the root canal was obturated with GP and Pz-MTA sealer, enhanced biomineralization of the dentinal tubules beyond the penetrated sealer tag was confirmed under the SEM observation (p < 0.05). Mineralized apatite structures (calcium/phosphorous ratio, 1.45-1.89) connecting its way through the dentinal tubules were detected at 350-400 μm from the tubule orifice, and the pre-crystallization seeds were also observed along the intra- and/or inter-tubular collagen fiber. Intratubular biomineralization depth was significantly enhanced in all PBS pretreated canals (p < 0.05). Pz-MTA cement can be used as a promising bioactive root canal sealer to enhance biomineralization of dentinal tubules under controlled environment. SCANNING 38:50-56, 2016. © 2015 The Authors. Scanning Published by Wiley Periodicals, Inc. PMID:26179659

  16. A systematic review of in vitro retrograde obturation materials.

    PubMed

    Theodosopoulou, Joanna N; Niederman, Richard

    2005-05-01

    The purpose of this review was two-fold: (a) to determine which retrograde obturation material(s) best prevents dye/ink penetration in vitro; and (b) to determine whether in vitro results agree with in vivo results. A MEDLINE search was conducted to identify in vitro studies published between January 1966 and October, week 4, 2003, conducted on human teeth, and published in English, German, or French language, testing the resistance to retrograde penetration of retrograde filling materials. The MEDLINE search identified 278 published articles. Of those, 115 studies examined the resistance to penetration of various retrograde filling materials, in vitro. Thirty-four studies met all the inclusion and validity criteria. The results indicate that, beyond 10 days in vitro, the most effective retrofilling materials, when measured by dye/ink penetration are: composites>glass ionomer cement>amalgam>orthograde gutta-percha>EBA. The results of these in vitro studies are not congruent with in vivo study results, suggesting a need to re-evaluate the clinical validity and importance of in vitro studies. PMID:15851926

  17. Efficacy of ultrasound-guided obturator nerve block in transurethral surgery

    PubMed Central

    Thallaj, Ahmed; Rabah, Dany

    2011-01-01

    Background: During transurethral resection surgery (TUR), accidental stimulation of the obturator nerve can cause violent adductor contraction, leading to serious intraoperative complications. General anesthesia with muscle relaxation is currently the preferred technique for TUR surgery. Spinal anesthesia combined with obturator nerve block has also been used for TUR surgery in geriatric population. Blind, anatomical methods for identifying the obturator nerve are often unsatisfactory. Therefore, we conducted this prospective study to validate the efficacy of ultrasound-guided obturator nerve block (USONB) during TUR procedures. Methods: Eighteen male patients undergoing TURP surgery under spinal anesthesia were included in the study. Bilateral USONB with maximum 20 ml of 1% lidocaine per patient was performed. An independent observer was present to monitor any adduction movements during the operation and to record patient and surgeon satisfactions. Results: In all patients, obturator nerve was visualized from the first attempt, requiring an average of 4.3 min for blocking of each side. USONB was successful (97.2%) in preventing an adductor spasm in all except one patient. Patient’s and surgeon’s satisfaction were appropriate. In all patients, adductor muscle strength recovered fully within 2 h following the surgical procedure. Conclusions: USONB is safe and effective during TUR surgery. It provides optimal intra-and postoperative conditions. PMID:21655015

  18. Expression of the ephrin receptor B2 in the embryonic chicken bursa of Fabricius

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Chicken B-cells develop in a specific organ, the bursa of Fabricius. To understand the bursal microenvironment guiding B-cell development, previous studies identified ephrin (Eph) receptor B2 (EphB2) gene transcripts in the embryonic bursa. We hypothesize that the EphB2 receptors and their ligands r...

  19. Protection against apoptosis in chicken bursa and thymus cells by phorbol ester in vitro

    SciTech Connect

    Asakawa, J.; Thorbecke, G.J. )

    1991-03-15

    Programmed suicide or apoptosis, due to activation of endogenous nucleases, occurs in immature CD4{sup {minus}}85{sup {minus}} mammalian thymus cells. Like the thymus, the bursa of Fabricius is a site of massive lymphopoiesis accompanied by cell death in vivo. In the present study the authors have, therefore, examined whether chicken bursa and thymus cells exhibit apoptosis. Bursa and thymus cells from SC chickens, 4-10 weeks of age, were incubated for 8-24 hrs with various reagents. Genomic DNA was isolated, electrophoresed in 3% Nusieve agarose gels, and examined for patterns of DNA fragmentation. A laddering of DNA in multiples of 200 base pairs, indicative of apoptosis, was observed with both bursa and thymus cells. These patterns of DNA fragmentation from bursa cells could be prevented by adding phorbol myristic acetate during culture and, more effectively, by PMA plus ionomycin, but not by ionomycin alone or by anti-{mu}. PMA did not affect the patterns of DNA fragmentation seen with spleen cells. Addition of the protein kinase C inhibitor staurosporin inhibited the preventive effect of PMA on apoptosis. PMA also greatly promoted the survival of bursa cells in culture, as assayed by percentage cell death and by {sup 3}H-thymidine incorporation. It is concluded that bursa and thymus cells from the chicken exhibit apoptosis. The data further suggest that protein kinase C activation protects apoptosis in cultured bursa cells.

  20. Comparison of obturator prosthesis fabricated using different techniques and its effect on the management of a hemipalatomaxillectomy patient

    PubMed Central

    Badadare, Mokshada M; Patil, Sanjayagouda B; Bhat, Sudhakara; Tambe, Abhijit

    2014-01-01

    Odontogenic tumours involving the maxilla or mandible are usually treated with surgical resection. To prevent recurrence, extensive surgical intervention might be carried out leaving the patient with anatomical defects. However, rehabilitation of such patients with an obturator can improve function, facial form and social acceptance. In this case, we have evaluated the different designs and techniques of fabrication of an obturator prosthesis used for the rehabilitation of a hemipalatomaxillectomy patient. A 40-year-old man presented with a loose fitting obturator prosthesis. He had undergone hemipalatomaxillectomy for the treatment of an ameloblastoma 2 years earlier and had been using an obturator prosthesis since then. Hollow-bulb obturator prostheses were fabricated using two different methods, the lost salt and open lid techniques. The obturator prosthesis fabricated with the lost salt technique weighed less than the patient's old obturator. But the obturator fabricated using the open lid technique did not only considerably reduce the weight of the prosthesis but also improved health, function, aesthetics, phonetics and quality of life in this hemipalatomaxillectomy patient. PMID:25188927

  1. Comparison of obturator prosthesis fabricated using different techniques and its effect on the management of a hemipalatomaxillectomy patient.

    PubMed

    Badadare, Mokshada M; Patil, Sanjayagouda B; Bhat, Sudhakara; Tambe, Abhijit

    2014-01-01

    Odontogenic tumours involving the maxilla or mandible are usually treated with surgical resection. To prevent recurrence, extensive surgical intervention might be carried out leaving the patient with anatomical defects. However, rehabilitation of such patients with an obturator can improve function, facial form and social acceptance. In this case, we have evaluated the different designs and techniques of fabrication of an obturator prosthesis used for the rehabilitation of a hemipalatomaxillectomy patient. A 40-year-old man presented with a loose fitting obturator prosthesis. He had undergone hemipalatomaxillectomy for the treatment of an ameloblastoma 2 years earlier and had been using an obturator prosthesis since then. Hollow-bulb obturator prostheses were fabricated using two different methods, the lost salt and open lid techniques. The obturator prosthesis fabricated with the lost salt technique weighed less than the patient's old obturator. But the obturator fabricated using the open lid technique did not only considerably reduce the weight of the prosthesis but also improved health, function, aesthetics, phonetics and quality of life in this hemipalatomaxillectomy patient. PMID:25188927

  2. The role of nasendoscopy in the fabrication of a palatopharyngeal obturator - a case report.

    PubMed

    Amin, Bhavya M; Aras, Meena A; Chitre, Vidya; Rajagopal, Praveen

    2014-08-01

    Defects confined to the hard palate can be managed with relative ease because it is a static shelf creating oro- nasal separation. Since the soft palate is a dynamic separator between the oral and nasal cavities, defects involving the soft palate require careful consideration. Instrumental visualization methods can aid the fabrication of obturators in patients with such defects and prevent problems of under or over obturation. This case report presents the prosthodontic management of a patient with a Veau class II cleft palate using a palatopharyngeal obturator in order to re-establish normal functions of deglutition and speech. Nasendoscopy was used as an adjunctive procedure to assess velopharyngeal function with the prosthesis. PMID:25302273

  3. A Direct Investment Method of Closed Two-Piece Hollow Bulb Obturator

    PubMed Central

    Deogade, Suryakant C.; Mantri, Sneha S.; Naitam, Dinesh; Dube, Gunjan; Gupta, Pushkar; Dewangan, Ashish

    2013-01-01

    Maxillary defects occur due to surgical treatment of benign and malignant tumors, congenital malformation, and trauma. Prosthetic rehabilitation in such patients is influenced by the size and location of the defect. The most common of all intraoral defects are seen in the maxilla, in the form of an opening into the maxillary sinus and nasopharynx. These defects create disabilities in speech, deglutition, and mastication. The prosthesis which closes such an opening and recreates the functional separation of the oral cavity and sinus and nasal cavities is referred to as an obturator. Numerous techniques of hollow bulb fabrication have been mentioned in the literature from time to time. But there are only a few methods for bulb fabrication in two-piece obturator. This technique describes a direct investment method of waxed-up closed hollow bulb two-piece obturator. PMID:23936685

  4. [IMPACT OF RONCOLEUKIN ON BALANCE OF CYTOKINS IN COMPLEX TREATMENT OF OBTURATION JAUNDICE OF NONTUMORAL GENESIS].

    PubMed

    Gajiyev, J N; Tagiyev, E G; Gadjiyev, N J

    2016-02-01

    The results of surgical treatment of 137 patients, suffering obturation jaundice of non-tumoral etiology, were analyzed. In all the patients the cause of obturation jaundice was choledocholithiasis. Roncoleukin was infused intravenously additionally in a complex of therapy. A degree of hepatic dysfunction was determined, taking into account the cholestasis markers. In 23 patients purulent cholangitis have occurred on background of obturation jaundice. Concentration of cytokins TNF-α, IFN-γ, IL-1, IL-2, IL-4, IL-6, IL-10 in sera were determined, using immunoassay analysis. The cytokins dysbalance severity preoperatively and dynamics of its changes have depended upon the hepatic dysbalance degree and presence of purulent cholangitis; a dysbalance is deeper, when the hepatic dysfunction is higher. Application of pathogenetically substantiated purposeful cytokinotherapy, including roncoleukin, have promoted the cytokins dysbalance elimination and improvement of the patients treatment results. PMID:27244913

  5. A simplified technique of orthograde MTA obturation on the elected canals of posterior teeth: Two case reports

    PubMed Central

    Wahengbam, Brucelee; Wahengbam, Pragya; Tikku, Aseem Prakash

    2014-01-01

    This article suggests a simplified technique of orthograde MTA obturation in less accessible canal(s) of posteriors teeth without using costly ultrasonics or specialised carrier. Essentially few finger pluggers, absorbent points and a simple canal projection method were used. The orifice(s) of the elected canal(s) to be obturated with MTA were projected onto the external occlusal surface for easy delivery and predictive instrumentation. The idea was based on ‘easy access’, ‘working one canal with one mix at one time’, ‘thorough condensation’ and ‘removal of excess moisture’. In case I, palatal canal of tooth no. 2 with gross apical perforation and suspected VRF was obturated with MTA. And in Case II, tooth no. 19 presented with incomplete furcal fracture extending into the canal was obturated with MTA in all 3 canals unitarily. Dense homogenous MTA obturation was achieved and both cases healed uneventfully. PMID:24554868

  6. Intrapelvic obturator internus muscle injections: a novel fluoroscopic technique.

    PubMed

    Valovska, Assia; Zaccagnino, Michael P; Weaver, Michael J; Valovski, Ivan; Kaye, Alan David; Urman, Richard D

    2015-01-01

    The obturator internus (OI) muscle is important in adult chronic noninfectious pelvic, perineal, gluteal, and retrotrochanteric pain syndromes. Evaluation and management of these patients' pain can be challenging because of the complex anatomy of this region, broad differential diagnosis, and lack of specific physical examination findings. Consequently, several clinicians have advocated the use of image guided injections to assist in the accurate diagnosis of OI-related symptoms and provide symptomatic relief to affected patients. We present 2 case series describing a novel fluoroscopically guided contrast controlled transpectineal approach to intrapelvic OI injections. Unlike prior fluoroscopically guided OI injection techniques, the approach described in the present 2 cases utilized multiple standard pelvic views, thus facilitating optimal needle positioning in three-dimensional space. This technique utilized standard fluoroscopic pelvic views to accurately measure needle depth within the pelvic cavity permitting the bulk of the OI to be injected in a controlled and safe fashion. The first patient underwent a left intrapelvic OI muscle injection with bupivacaine 0.25% and 40 mg methylprednisolone. The average pre- and postprocedural visual analog pain scale scores were 5 out of 10 and 2 out of 10, respectively, with a self-reported 75% pain reduction. The second patient underwent a right intrapelvic OI muscle injection with bupivacaine 0.25% and 40 mg methylprednisolone. The average pre- and postprocedural visual analog scale scores were 8 out of 10 and 1 out of 10, respectively, with a self-reported 90% pain reduction. Larger scale studies should be undertaken to evaluate the therapeutic efficacy and generalized accuracy of this technique. PMID:25794225

  7. The adductor part of the adductor magnus is innervated by both obturator and sciatic nerves.

    PubMed

    Takizawa, Megumi; Suzuki, Daisuke; Ito, Hajime; Fujimiya, Mineko; Uchiyama, Eiichi

    2014-07-01

    The hip adductor group, innervated predominantly by the obturator nerve, occupies a large volume of the lower limb. However, case reports of patients with obturator nerve palsy or denervation have described no more than minimal gait disturbance. Those facts are surprising, given the architectural characteristics of the hip adductors. Our aim was to investigate which regions of the adductor magnus are innervated by the obturator nerve and by which sciatic nerve and to consider the clinical implications. Twenty-one lower limbs were examined from 21 formalin-fixed cadavers, 18 males and 3 females. The adductor magnus was dissected and was divided into four parts (AM1-AM4) based on the locations of the perforating arteries and the adductor hiatus. AM1 was supplied solely by the obturator nerve. AM2, AM3, and AM4 received innervation from both the posterior branch of the obturator nerve and the tibial nerve portion of the sciatic nerve in 2 (9.5%), 20 (95.2%), and 6 (28.6%) of the cadavers, respectively. The double innervation in more than 90% of the AM3s is especially noteworthy. Generally, AM1-AM3 corresponds to the adductor part, traditionally characterized as innervated by the obturator nerve, and AM4 corresponds to the hamstrings part, innervated by the sciatic nerve. Here, we showed that the sciatic nerve supplies not only the hamstrings part but also the adductor part. These two nerves spread more widely than has generally been believed, which could have practical implications for the assessment and treatment of motor disability. PMID:23813615

  8. Sex steroid sensitivity of developing bursa of Fabricius.

    PubMed

    Ylikomi, T; Tuohimaa, P

    1989-03-01

    Sex steroid sensitivity of the bursa of Fabricius (BF) was studied from the early embryonic time until its regression. Expression of progesterone receptor (PR) served as a dual marker: first, as a marker for progesterone sensitivity and second, as a marker for estrogen action, since it is an estrogen-induced protein. The progesterone binding molecule in the bursa was characterized by different chromatography methods and by steroid binding studies. We showed that it fulfils the criteria of a progesterone receptor by binding, structural and immunological properties. With immunohistochemistry and with the combined techniques of immunohistochemistry and autoradiography we demonstrated two cell types which express the PR: smooth muscle cells surrounding the BF and stromal cells located under the bursal epithelium and between the lymphoid follicles. The epithelium and the cells inside the lymphoid follicles were negative. Using immunoelectron microscopy the PR-expressing stromal cells were shown to be fibroblasts. The cloacal mesenchyme, from which the BF develops, was shown to be sensitive to exogenous estrogen very early during the embryonic time. The mesenchyme around and inside the developing BF reached estrogen sensitivity a few days later. The estrogen-sensitive mesenchymal cells were first seen surrounding the bursal primordium and later in the center of the plicae. During a natural sexual maturation without exogenous estradiol an expression of the PR was detected much later, at the age of 10-12 weeks after hatching. This expression correlates with the onset of the bursal regression and with the increase of the sex steroid levels in the blood. In the oviduct stroma PR was undetectable before the onset of sexual maturation. In the oviduct stroma PR becomes detectable a few weeks earlier than in the bursa. PMID:2485693

  9. Closed hollow bulb obturator--one-step fabrication: a clinical report.

    PubMed

    Buzayan, Muaiyed M; Ariffin, Yusnidar T; Yunus, Norsiah

    2013-10-01

    A method is described for the fabrication of a closed hollow bulb obturator prosthesis using a hard thermoforming splint material and heat-cured acrylic resin. The technique allowed the thickness of the thermoformed bulb to be optimized for weight reduction, while the autopolymerized seal area was covered in heat-cured acrylic resin, thus eliminating potential leakage and discoloration. This technique permits the obturator prosthesis to be processed to completion from the wax trial denture without additional laboratory investing, flasking, and processing. PMID:23551843

  10. The lumbar interspinous bursae and Baastrup's syndrome. An autopsy study.

    PubMed

    Bywaters, E G; Evans, S

    1982-01-01

    This study describes the prevalence, distribution, pathology and pathogenesis of lumbar interspinous bursitis (described as a clinical syndrome by Baastrup in 1933). It is based on an anatomic study of 152 lumbar spines derived from routine and random postmortem material, together with selected specimens from autopsies on patients with various rheumatic diseases. From a statistical study of 50 randomly chosen spines, bursae are found when the interspinous distance is small compared with the total height of the lumbar spine ('bursal index'): nearly all bursal spaces show some sign of inflammation and a few show severe bony erosion. Crystal deposits therein are also described. PMID:7178764

  11. Minimal spanning tree for 100 companies in Bursa Malaysia

    NASA Astrophysics Data System (ADS)

    Bahaludin, Hafizah; Abdullah, Mimi Hafizah; Salleh, Supian Mat

    2015-02-01

    This paper investigates the stock market network among the stocks traded in Bursa Malaysia by using minimal spanning tree (MST) techniques. The daily closing prices from 2011 until 2013 of 100 companies based on market capitalization are chosen to construct the network. By constructing the stock market network, the most influential stocks in Malaysian stock market are identified by employing the centrality measurements which are degree, betweenness and closeness. The findings of this study ascertain that from the 100 companies studied, four companies are identified as the most influential in the Malaysian stock market.

  12. Synovial chondromatosis of pes anserine bursa secondary to osteochondroma.

    PubMed

    Shallop, Brandon; Abraham, John A

    2014-08-01

    Osteochondromas are common benign bone tumors. Synovial chondromatosis is a benign cartilaginous metaplasia that occurs in the synovium. The authors describe a unique case of synovial chondromatosis developing in the pes anserine bursa secondary to an underlying osteochondroma of the proximal medial tibia. It is unusual to see both of these processes occurring simultaneously in 1 location. After appropriate consent was obtained, the patient's case was reviewed. A 17-year-old boy presented with a painless mass in the medial aspect of the right leg. Initial imaging of the right leg showed a cartilaginous-appearing lesion arising from the tibia and several distinct additional cartilaginous masses in the adjacent soft tissue. After 16 months of observation, the patient began to have increasing pain in the region of the lesion. The patient underwent surgery for excision of suspected synovial chondromatosis of the right pes anserine bursa and osteochondroma of the proximal right tibia. Postoperatively, the patient had complete resolution of symptoms and regained full range of motion of the knee. He returned to full activities, including walking and running. Osteochondromas are common benign bone tumors. Synovial chondromatosis is a benign synovial metaplastic cartilaginous proliferation that occurs primarily in joints, but can occur in any synovial-lined space. In this case report, the authors describe a unique occurrence of both of these lesions simultaneously. The treatment was excision of the osteochondroma and resection of the chondromatosis lesions, which resulted in an excellent outcome. PMID:25102510

  13. A South Indian cadaveric study on obturator neurovascular bundle with a special emphasis on high prevalence of 'venous corona mortis'.

    PubMed

    Nayak, Satheesha B; Deepthinath, R; Prasad, A M; Shetty, Surekha D; Aithal, Ashwini P

    2016-07-01

    Surgical procedures in the pelvic region are very challenging because of the complex anatomy of this region. "Corona mortis" is a term used to describe retro-pubic anastomosis between the obturator and external iliac vessels. It is considered as a key structure as significant haemorrhage may occur if the vessels are cut accidentally during pelvic surgeries. Earlier studies have documented a high frequency of venous anastomosis compared to its arterial counterpart. The objective of our study was to document the prevalence of venous corona mortis in South Indian human adult cadaveric pelvises. We conducted this study on 73 cadaveric pelvic halves. Out of the 73 hemi pelvises, 36 were normal without any variations of the obturator vessels while 37 hemi pelvises (51%) showed the presence of abnormal obturator vessels which proves to be a very high incidence in terms of variations. Out of the 37 hemi pelvises, 25 (68%) showed the presence of 2 obturator veins, out of which 1 was normal and the other was an abnormal obturator vein. 8 hemi pelvises (22%) had only abnormal obturator vein. Most of the abnormal obturator veins drained into the external iliac vein, while two veins drained into inferior epigastric veins. Venous corona mortis is said to be frequently encountered during surgery and is considered to be as important as arterial corona mortis in its clinical implications. Individual evaluation of this risky anatomical structure should be done prior to any surgical interventions. PMID:27156835

  14. Difficult diagnosis: strangulated obturator hernia in an 88-year-old woman.

    PubMed

    Leitch, Megan Kathleen; Yunaev, Michael

    2016-01-01

    The obturator hernia is a rare type of hernia that can present a diagnostic challenge for the clinician. We report a case of an 88-year-old woman who presented with a history of right iliac fossa pain, bilious vomiting and diarrhoea. Non-specific findings on examination and blood tests made the diagnosis difficult, however, a CT scan of her abdomen revealed the site of the obstruction and the patient was taken to theatre for emergency surgery. We review the literature with focus on the diagnosis of obturator hernias and the different surgical approaches used. The authors believe that this case is of educational value to healthcare professionals, particularly those working in general practice, emergency departments and on surgical teams. It highlights to doctors that patients with incarcerated obturator hernias can present with or without overt signs of intestinal obstruction and emphasises the fact that an obturator hernia can be an important cause of intestinal obstruction in a thin, elderly woman. PMID:27358098

  15. Bacterial entombment by intratubular mineralization following orthograde mineral trioxide aggregate obturation: a scanning electron microscopy study.

    PubMed

    Yoo, Jun Sang; Chang, Seok-Woo; Oh, So Ram; Perinpanayagam, Hiran; Lim, Sang-Min; Yoo, Yeon-Jee; Oh, Yeo-Rok; Woo, Sang-Bin; Han, Seung-Hyun; Zhu, Qiang; Kum, Kee-Yeon

    2014-12-01

    The time domain entombment of bacteria by intratubular mineralization following orthograde canal obturation with mineral trioxide aggregate (MTA) was studied by scanning electron microscopy (SEM). Single-rooted human premolars (n=60) were instrumented to an apical size #50/0.06 using ProFile and treated as follows: Group 1 (n=10) was filled with phosphate buffered saline (PBS); Group 2 (n=10) was incubated with Enterococcus faecalis for 3 weeks, and then filled with PBS; Group 3 (n=20) was obturated orthograde with a paste of OrthoMTA (BioMTA, Seoul, Korea) and PBS; and Group 4 (n=20) was incubated with E. faecalis for 3 weeks and then obturated with OrthoMTA-PBS paste. Following their treatments, the coronal openings were sealed with PBS-soaked cotton and intermediate restorative material (IRM), and the roots were then stored in PBS for 1, 2, 4, 8 or 16 weeks. After each incubation period, the roots were split and their dentin/MTA interfaces examined in both longitudinal and horizontal directions by SEM. There appeared to be an increase in intratubular mineralization over time in the OrthoMTA-filled roots (Groups 3 and 4). Furthermore, there was a gradual entombment of bacteria within the dentinal tubules in the E. faecalis inoculated MTA-filled roots (Group 4). Therefore, the orthograde obturation of root canals with OrthoMTA mixed with PBS may create a favorable environment for bacterial entombment by intratubular mineralization. PMID:25012869

  16. Variation of distances from mid-urethra to the obturator foramen: an MRI study

    PubMed Central

    Doumouchtsis, Stergios K.; Berger, Mitchell B.; DeLancey, John O.

    2013-01-01

    Introduction and hypothesis To estimate distances from the mid-urethra to the obturator foramina and to explore correlations between pelvic dimensions and body height. Methods This is a secondary analysis of a parent case–control study on the mechanisms of stress urinary incontinence. We measured pelvic dimensions on magnetic resonance images of women with (cases, n=50) and without (controls, n=50) stress urinary incontinence. Results The mean distance from mid-urethra to the obturator membrane among cases is 31.8 mm (left) and 32.1 mm (right), with a range from 25.9 to 42.0 mm. There were no significant differences in these distances when comparing left with right, or cases with controls. Weak correlation was found between the urethra-to-obturator foramina distances and heights only in the case subjects. Conclusion There is high variability in the distance from mid-urethra to the obturator foramina. Height should not be used as a predictor of dimensions in the lesser pelvis. PMID:22543545

  17. Total obturation of velopharynx for treatment of velopharyngeal hypodynamism: case report.

    PubMed

    Dutka, Jeniffer de Cássia Rillo; Uemeoka, Erika; Aferri, Homero Carneiro; Pegoraro-Krook, Maria Inês; Marino, Viviane Cristina de Castro

    2012-07-01

    A child with microdeletion at 22q11.21 was referred to a craniofacial center due to hypernasality, unintelligible speech, and bifid uvula. Velopharyngeal dysfunction remained after surgical repair of submucous cleft palate and speech therapy. A prosthetic-behavioral treatment approach involving total obturation of the velopharynx was successfully implemented for management of velopharyngeal hypodynamism. PMID:21417778

  18. Suburethral tape via the obturator route: is the TOT a simplification of the TVT?

    PubMed

    Mellier, G; Benayed, B; Bretones, S; Pasquier, J C

    2004-01-01

    Suburethral meshes can be implanted via the classic retropubic route (TVT) or by a new insertion technique that passes the tape into the obturator foramen (TOT). In a retrospective study we compared one 18-month period of 94 TOT (tension-free obturator tape) and one 18-month period of 99 TVT (tension-free vaginal tape), which preceded the change in the approach route. All operations were performed by the same surgeon using the same Prolene mesh and with no other surgical procedure associated. These two series were similar in terms of patient age, previous surgical history, degree of incontinence and preoperative urethral closure pressure. The analysis shows more hemorrhagic complications in the TVT group (10%) than in the TOT group (2%), but the difference was not significant. Bladder injuries were more frequent in the TVT group (10%) than in the TOT group (0%), but there was one urethral injury in the TOT group. The mean follow-up was 29.5 months in the TVT group and 12.8 months in the TOT group. The urinary results were the same, with 90% and 95% cured, respectively. In conclusion, the obturator approach shows identical urinary results to the classic retropubic approach. Because of the nature of the procedure, major hemorrhage and bowel perforation are excluded in the TOT procedure. Thus simplicity, safety and continence result mean that the obturator approach represents the best method of suburethral tape insertion for the treatment of urinary stress incontinence. PMID:15517665

  19. Fracture resistance of overtly flaring root canals filled with resin-based obturation material

    PubMed Central

    Abdo, Salma B.; Eldarrat, Aziza H.

    2013-01-01

    Background: Reinforcement of root canals obturated with Resilon was reported by several investigators, but no studies reported the reinforcement of overtly flared root canals obturated with Resilon material. The aim of this study was to investigate the fracture resistance of overtly flared root canals filled with Resilon as compared to similar root canals filled with gutta-percha (GP). Materials and Methods: Sixty single-rooted premolars were divided randomly into six groups. Group 1 served as control group. The control group was sub-divided into two groups, a negative group and a positive group. The negative group consisted of root canals that were only cleaned from residual pulpal tissues, however, the positive group had prepared and overtly flared root canals without obturation. Groups 2 and 4 were shaped using 0.04 taper rotary files, while groups 3 and 5 were shaped using 0.06 taper rotary files. Before obturation, the last four groups were further flared coronally with a reverse cone diamond bur. Groups 2 and 3 were obturated with GP and a resin-based sealer, while groups 4 and 5 were obturated with Resilon and Epiphany self-etching primer and Epiphany sealer. Roots were then fixed into a universal testing machine and vertically loaded until fracture. SPSS software (Release 9.0 for Windows, SPSS, Chicago, USA) was used to perform the statistical analysis. Results: Fracture resistance measurements showed that there were differences in resistance to fracture among the experimental groups (ANOVA, P < 0.0001). Mean values of the loading force applied to the negative control group were the highest at 1.81 KN, whereas the mean values for the Resilon groups (Groups 4 and 5) at 1.13 KN and 1.54 KN were found to be higher than the GP groups (Groups 2 and 3) at 0.45 KN and 0.88 KN, respectively. Tukey's post hoc test showed that there was no statistical difference between the mean values of the negative control group and Group 5 (P = 0.69). Conclusion: Obturation of

  20. The inferior epigastric artery arising from the internal iliac artery via a common trunk with the obturator artery.

    PubMed

    Won, Hyung-Sun; Won, Hyung-Jin; Oh, Chang-Seok; Han, Seung-Ho; Chung, In-Hyuk; Kim, Dong-Hoan

    2012-12-01

    We report a rare case of a left inferior epigastric artery arising from the internal iliac artery via a common trunk with the obturator artery in an 84-year-old female cadaver. A common trunk for the inferior epigastric and obturator arteries firstly originated from the left internal iliac artery, at 3.0 mm below the bifurcation of the left common iliac artery. This trunk ran straight between the left external iliac artery and left external iliac vein, and was finally divided into the left inferior epigastric and left obturator arteries just superior to the inguinal ligament. PMID:23301197

  1. Incidence of post obturation pain following single and multi visit root canal treatment in a teaching hospital of Bangladesh.

    PubMed

    Jabeen, S; Khurshiduzzaman, M

    2014-04-01

    Post obturation pain is the pain of any degree after endodontic treatment. There are different opinions regarding incidence of post obturation pain related to single and multi visit root canal treatment. This prospective study was conducted to evaluate the incidence of post obturation pain in single visit and multi visit root canal treatment and to compare the incidence of pain between the two treatment groups. A total of 120 cases of endodontically involved asymptomatic non vital single rooted teeth were selected for this study. The patients were assigned and divided in to two treatment groups, sixty patients each. In single visit group, all teeth were prepared and filled using the standardized preparation and lateral condensation filling technique. In the multi visit treatment group, at the first appointment, the teeth were prepared, and dressed with calcium hydroxide paste for 7 days. At the second appointment, the teeth were prepared and obturated by using lateral condensation technique. The frequency of post obturation pain was recorded as no pain, slight, moderate and severe pain and evaluated at the day 1 and at the day 7 after obturation. The data were analyzed statistically by using SPSS version-12. P value <0.05 was taken as significant. The study showed that the post obturation pain in the single visit treatment group was more than multi visit treatment group, which is significant (p value <0.044). Out of the 120 patients, 86(71.7%) patients had no pain, 19(15.8%) had slight pain and 15(12.5%) patients had moderate pain at the day 1 after obturation. At the day 7 after obturation, 108(90%) patients had no pain, 9(7.5%) had slight pain and 3(2.5%) patients had moderate pain. No patient noticed severe pain during the follow up period. Older patient had significantly more post obturation pain than the younger patient. There was higher incidence of post obturation pain following the single visit root canal treatment. In multi visit root canal treatment with

  2. The inferior epigastric artery arising from the internal iliac artery via a common trunk with the obturator artery

    PubMed Central

    Won, Hyung-Sun; Won, Hyung-Jin; Han, Seung-Ho; Chung, In-Hyuk; Kim, Dong-Hoan

    2012-01-01

    We report a rare case of a left inferior epigastric artery arising from the internal iliac artery via a common trunk with the obturator artery in an 84-year-old female cadaver. A common trunk for the inferior epigastric and obturator arteries firstly originated from the left internal iliac artery, at 3.0 mm below the bifurcation of the left common iliac artery. This trunk ran straight between the left external iliac artery and left external iliac vein, and was finally divided into the left inferior epigastric and left obturator arteries just superior to the inguinal ligament. PMID:23301197

  3. A Study of Variations in the Origin of Obturator Artery and its Clinical Significance

    PubMed Central

    Rajive, Akshara Venmalassery

    2015-01-01

    Introduction The large number of organs and anatomical structures within the cramped pelvic cavity makes the study of vascular pattern and their variations of much importance in this particular anatomical region. Clear awareness of the vascular anatomy of pelvis is critical in surgeries performed here, which require ligation of the arteries concerned and also because such anomalous origins may cause profuse bleeding during surgical procedures. This is particularly true with regard to the variations in the origin of the obturator artery, while performing pelvic and groin surgeries. Aim The aim of the present study was to find out the prevalence of normal and aberrant origins of obturator artery and to describe its surgical implications. Materials and Methods The study was carried out on fifty hemipelvises of embalmed cadavers and the origin and course of the arteries were traced and noted. Results Of the 50 pelvic halves, in 27 specimens, the obturator took origin from the anterior division of internal iliac artery. Remaining 23 specimens showed variations. The origin of the obturator artery was from the inferior epigastric artery in 11 cases, from the common stem of the internal iliac artery and the external iliac artery in 2 cases each, from the posterior trunk of the internal iliac artery in 5 and one each from superior gluteal, inferior gluteal, and internal pudendal artery. Conclusion The present study indicates that the origin of the obturator artery is highly variable. It can take origin from the stem of the internal iliac artery or from its anterior or posterior division, or from one of the branches of the divisions. It can also take origin from external iliac artery or its inferior epigastric branch. Advancements in diagnostic and surgical techniques in obstetric procedures and urogenital interventions make it essential to have a clear-cut understanding of the vasculature in the abdomen and pelvis. PMID:26435935

  4. Aflatoxins in retail food products in Bursa, Turkey.

    PubMed

    Günsen, Ugur; Büyükyörük, Ilhan

    2002-10-01

    Aflatoxin B1 (AFB1) in 25 cacao hazelnut cream and 15 dried apricot samples and aflatoxin M1 (AFM1) in 130 cheese samples (35 full fatty Turkish white cheeses, 35 fresh kashars, 25 old kashars, 20 Gravyer cheeses and 15 cream cheeses) randomly collected from traditional retail markets with insufFicient chilling facilities in Bursa, Turkey, were determined by ELISA. Mean AFB1 and AFM1 in the cacao hazelnut cream, dried apricot and cheese were 1,076.5 +/- 194.4 ng/kg, 1,441.3 +/- 331.9 ng/kg and 142.2 +/- 18.7 ng/kg, respectively; 15.45% of the cheese samples exceeded the Turkish AFM1 tolerance limit of 250 ng/kg. PMID:12361114

  5. Evaluation of the quality of life of patients with maxillofacial defects after prosthodontic therapy with obturator prostheses.

    PubMed

    Depprich, R; Naujoks, C; Lind, D; Ommerborn, M; Meyer, U; Kübler, N R; Handschel, J

    2011-01-01

    The purpose of this study was to investigate how patients with maxillofacial defects evaluate their quality of life after maxillectomy and prosthodontic therapy with obturator prostheses. 43 patients were included in the study (25 female, 18 male). 31 (72%) patients completed a standardized questionnaire of 143 items and then answered additional questions in a standardized interview. Global quality of life after prosthodontic therapy with obturator prostheses was 64% (±22.9) on average. Functioning of the obturator prosthesis, impairment of ingestion, speech and appearance, the extent of therapy, and the existence of pain had significant impact on the quality of life (p<0.005). Orofacial rehabilitation of patients with maxillofacial defects using obturator prostheses is an appropriate treatment modality. To improve the situation of patients prior to and after maxillectomy sufficient information about the treatment, adequate psychological care and speech therapy should be provided. PMID:20980129

  6. Bacterial colonization of the ovarian bursa in dogs with clinically suspected pyometra and in controls.

    PubMed

    Rubio, Alejandro; Boyen, Filip; Tas, Olaf; Kitshoff, Adriaan; Polis, Ingeborgh; Van Goethem, Bart; de Rooster, Hilde

    2014-10-15

    Septic peritonitis occurs relatively commonly in dogs. Secondary septic peritonitis is usually associated with perforation of intestines or infected viscera, such as the uterus in pyometra cases. The aim of this study was to evaluate the bacterial flora in the ovarian bursae of intact bitches as a potential source of contamination. One hundred forty dogs, clinically suspected of pyometra, were prospectively enrolled. The control group consisted of 26 dogs that underwent elective ovariohysterectomies and 18 dogs with mammary gland tumors that were neutered at the time of mastectomy. Bacteriology samples were taken aseptically at the time of surgery from the bursae and the uterus in all dogs. Twenty-two dogs that were clinically suspected of pyometra had sterile uterine content ("mucometra" cases); the remaining 118 had positive uterine cultures ("pyometra" cases) and septic peritoneal fluid was present in 10% of these cases. Of the 118 pyometra cases, 9 had unilateral and 15 had bilateral bacterial colonization of their ovarian bursae. However, the bacteria from the ovarian bursa were similar to those recovered from the uterine pus in only half of the cases. Furthermore, positive bursae were also seen in one mucometra dog (unilateral) and in four control dogs (two unilateral and two bilateral). The data illustrate that the canine ovarian bursa can harbor bacteria. The biological importance of these isolations remains unclear. PMID:25127745

  7. Effect of 95% Ethanol as a Final Irrigant before Root Canal Obturation in Primary Teeth: An in vitro Study

    PubMed Central

    Thiruvenkadam, G; John, Baby; Priya, PR Geetha

    2016-01-01

    ABSTRACT Background: Successful obturation in the primary teeth demands complete dryness of the root canal system. Aim: The purpose of this study was to determine the effect of 95% ethanol as the final irrigant before root canal obturation in primary teeth. Materials and methods: A total of 20 extracted primary mandibular canines were biomechanically prepared and pre-obturated volume of each tooth was assessed using spiral computed tomography (CT). The specimens were divided into two groups (n = 10): group 1, Metapex group; group 2, zinc oxide eugenol group. Each group was further divided randomly into two subgroups (n = 5): subgroup 1, canals were dried with 95% ethanol; subgroup 2, canals were blot dried with paper points with the last one appearing dry. All canals were obturated and the postobturated volume of each tooth was measured. The percentage of obturated volume (POV) was calculated using the formula: (postobturated volume/preobturated volume) × 100. The POV between the groups was statistically analyzed using Mann-Whitney test and Wilcoxon Signed rank test appropriately. Results: Root canals that were dried with ethanol showed better obturation than using paper points alone and the difference was statistically significant in both group 1 (p < 0.001) and group 2 (p < 0.002). Conclusion: Drying of the root canal system with 95% ethanol can result in better obturation in the primary teeth. How to cite this article: Thiruvenkadam G, Asokan S, John B, Geetha Priya PR. Effect of 95% Ethanol as a Final Irrigant before Root Canal Obturation in Primary Teeth: An in vitro Study. Int J Clin Pediatr Dent 2016;9(1):21-24. PMID:27274150

  8. Laparoscopic total extraperitoneal repair of preoperatively diagnosed bilateral obturator and incidental bilateral femoral herniae.

    PubMed

    Malik, Muhammad Usman; Connelly, Tara M; Hamid, Mustafa; Pretorius, Frederik

    2016-01-01

    Obturator hernia (OH), a rare type of hernia, is associated with high morbidity and mortality. Diagnosis is often delayed as clinical symptoms are typically non-specific. OH is frequently associated with other occult inguinopelvic herniae. Early diagnosis is vital to decrease morbidity and mortality. We report the case of a 75-year-old woman who presented to the surgical outpatients' department with non-specific bilateral groin pain radiating to the thighs. CT of the pelvis demonstrated bilateral OH with no radiological evidence of bowel obstruction. Semiurgent elective laparoscopic total extraperitoneal mesh repair was performed. Intraoperative findings confirmed bilateral obturator herniae as well as incidental bilateral femoral herniae. This case highlights the need for a high index of suspicion for such concomitant hernias that, in the presence of OH, may only be identified intraoperatively. PMID:27113790

  9. Conservative management of medication-related osteonecrosis of the maxilla with an obturator prosthesis.

    PubMed

    Troeltzsch, Matthias; Probst, Florian; Troeltzsch, Markus; Ehrenfeld, Michael; Otto, Sven

    2015-03-01

    Advanced maxillary medication-related osteonecrosis of the jaw can cause extensive hard and soft tissue destruction that results in long-term oroantral fistulae. The surgical treatment of medication-related osteonecrosis of the jaw may relieve acute symptoms and eliminate the signs of inflammation, but the primary and sustained plastic closure of these defects can challenge both the clinician and the patients. Although the use of obturator prostheses for maxillary defects after ablative oncologic surgery is well documented, studies about this treatment for similar medication-related osteonecrosis of the jaw-related defects are missing. This presentation of clinical situations describes the use of obturators as a conservative alternative to repetitive surgery for the rehabilitation of selected maxillary defects with oroantral communications. PMID:25444286

  10. Avulsed Immature Permanent Central Incisors Obturated With Mineral Trioxide Aggregate: A Case Report

    PubMed Central

    Al-Kahtani, Ahmed

    2013-01-01

    The endodontic management of immature permanent incisors in young children can be challenging. This case reported an avulsed immature maxillary central incisors that underwent complete endodontic obturation using mineral trioxide aggregate. A 10-year-old male who suffered a fall injury avulsed both his central incisors. The revascularization process was not possible due to patient compliance and geographic reasons. Mineral trioxide aggregate was utilized as a novel endodontic treatment. After one year post-injury, the teeth remained symptom-free, the clinical and radiographic follow-up showed evidence of healthy periodontium. How to cite this article: Al-Kahtani A. Avulsed Immature Permanent Central Incisors Obturated With Mineral Trioxide Aggregate: A Case Report. J Int Oral Health 2013; 5(3):88-96. PMID:24155609

  11. An Alternative Approach to Combine Orbital Prosthesis and Obturator: A Case Report

    PubMed Central

    Soganci, Gokce; Yalug, Suat; Kocacikli, Mustafa

    2011-01-01

    This report describes a different approach for diminishing the movements of orbital prosthesis during mimic movements and chewing function. Mechanical devices such as magnets are used to enhance the retention in case lack of the implants. However rigid fixation of obturator and orbital prosthesis can result in movements of the orbital prosthesis during mastication. In this case obturator and orbital prosthesis are combined by magnets. However this combination is not rigid because of an active part which provides movement. This active part allows movements in a space constructed in the acrylic base of orbital prosthesis. Thus, the movements that may occur on orbital prosthesis during chewing can be diminished by this simple mechanism. Due to the fact that designing such a mechanism that minimizes the movements of the orbital prosthesis contributes patient’s comfort. PMID:21912502

  12. Implant-supported obturator overdenture for extensive maxillary resection patient: a clinical report.

    PubMed

    Leles, Cláudio Rodrigues; Leles, José Luiz Rodrigues; de Paula Souza, Carlos; Martins, Rafael Ragonezi; Mendonça, Elismauro Francisco

    2010-04-01

    This clinical report presents an implant-retained obturator overdenture solution for a Prosthodontic Diagnostic Index Class IV maxillectomy patient with a large oronasal communication and severe facial asymmetry, loss of upper lip and midfacial support, severe impairment of mastication, deglutition, phonetics, and speech intelligibility. Due to insufficient bone support to provide satisfactory zygomaticus implant anchorage, conventional implants were placed in the body of the left zygomatic arch and in the right maxillary tuberosity. Using a modified impression technique, a cobalt-chromium alloy framework with three overdenture attachments was constructed to retain a complete maxillary obturator. Patient-reported functional and quality of life measure outcomes were dramatically improved after treatment and at the two-year follow-up. PMID:20040025

  13. Aortobifemoral Reconstruction with Right Extra-Anatomic Obturator Foramen Bypass due to a Septic Groin

    PubMed Central

    Hinojosa, Carlos A.; Anaya-Ayala, Javier E.; Laparra-Escareno, Hugo; Lizola, Rene; Torres-Machorro, Adriana

    2016-01-01

    The aortic bifurcation and iliac vessels are common sites of atherosclerotic occlusive disease causing the clinical expression known as “Leriche’s syndrome”. An aortobifemoral bypass grafting in the setting of a septic groin remains a significant challenge to vascular surgeons. We present a 65-year-old male with complete occlusion of the distal aorta and iliac arteries; he had undergone a left axillo-femoral and femoral-femoral artery bypass 2 years prior to our evaluation. Owing to a complex graft infection in the right groin and worsening lower extremity ischemia, we performed an aortobifemoral reconstruction through the right obturator membrane. This report highlights the safety and efficacy of the obturator bypass for avoiding infected groins while preserving vascular continuity and durability with 78 months of secondary patency rate. PMID:27386453

  14. Fracture of the Greater Trochanter during Closed Reduction of Obturator Type Hip Dislocation

    PubMed Central

    Yang, Jae-Hyuk; Pandher, Dilbans Singh

    2014-01-01

    Obturator (Inferior) type dislocation of the hip joint is a rare and the fracture of greater trochanter during closed reduction for it has never been reported in literature. In this report, we present a case of a fracture of greater trochanter during difficult closed reduction which required operative fixation. Surgeons need to be aware of this complication and excessive force for reduction should be avoided when treating of this type dislocation.

  15. Sabots, Obturator and Gas-In-Launch Tube Techniques for Heat Flux Models in Ballistic Ranges

    NASA Technical Reports Server (NTRS)

    Bogdanoff, David W.; Wilder, Michael C.

    2013-01-01

    For thermal protection system (heat shield) design for space vehicle entry into earth and other planetary atmospheres, it is essential to know the augmentation of the heat flux due to vehicle surface roughness. At the NASA Ames Hypervelocity Free Flight Aerodynamic Facility (HFFAF) ballistic range, a campaign of heat flux studies on rough models, using infrared camera techniques, has been initiated. Several phenomena can interfere with obtaining good heat flux data when using this measuring technique. These include leakage of the hot drive gas in the gun barrel through joints in the sabot (model carrier) to create spurious thermal imprints on the model forebody, deposition of sabot material on the model forebody, thereby changing the thermal properties of the model surface and unknown in-barrel heating of the model. This report presents developments in launch techniques to greatly reduce or eliminate these problems. The techniques include the use of obturator cups behind the launch package, enclosed versus open front sabot designs and the use of hydrogen gas in the launch tube. Attention also had to be paid to the problem of the obturator drafting behind the model and impacting the model. Of the techniques presented, the obturator cups and hydrogen in the launch tube were successful when properly implemented

  16. Obturator nerve impingement as a severe late complication of bilateral triple pelvic osteotomy.

    PubMed

    Tong, K; Hayashi, K

    2012-01-01

    A four-year-old female spayed Labrador Retriever, which had undergone bilateral triple pelvic osteotomy (TPO) at the age of eight months, was presented with severe progressive shifting pelvic limb lameness for a duration of three months prior to presentation. The dog had multiple episodes of showing signs of excruciating pain, as well as an inability to rise or ambulate, inappetance, and lethargy. Orthopaedic examination revealed severe bilateral pelvic limb muscular atrophy, and signs of severe pain on abduction of the pelvic limbs, on rectal palpation ventrally, and on palpation of the region of the iliopsoas and pectineus muscles bilaterally. Surgery was indicated to explore the region and to release the pectineus and iliopsoas muscles. During surgery, callus tissue and the free section of pubic bone were found to be impinging on the obturator nerve at the previous TPO pubic osteotomy site bilaterally. On both sides, a 1 to 2 cm segment of pubis and fibrous callus tissue were excised and the obturator nerves were freed from the impingement. Immediately after the surgery, the patient's stance and gait were dramatically improved. The dog could maintain a much broader based stance and make longer strides with the pelvic limbs. At the two month follow-up examination, there were not any signs of lameness noted. Obturator nerve impingement can be a serious potential complication of TPO and may manifest clinically as marked pelvic limb lameness years after surgery. PMID:21938311

  17. Effect of irrigation with Tetraclean on bacterial leakage of obturated root canals.

    PubMed

    Mohammadi, Zahed; Shalavi, Sousan; Giardino, Luciano; Palazzi, Flavio

    2014-04-01

    The purpose of the study presented here was to evaluate the effect of Tetraclean, Hypoclean, Chlor-XTRA, 2% chlorhexidine and 6% sodium hypochlorite/17% EDTA as a final irrigant on bacterial leakage of the root canal. One hundred and fifty-five extracted human maxillary central incisors were randomly divided into five experimental groups of 25 teeth each and two control groups of 15 teeth each. The root canals in each group were irrigated with 2 ml of the relevant irrigant between each filing. The root canals in group 5 were irrigated with 5 ml of 17% EDTA at the end of root canal preparation. The teeth in each group were obturated with gutta-percha and AH-26 sealer. Positive control teeth were obturated with a single gutta-percha cone without sealer, and negative controls were obturated in the same way as experimental groups. The coronal portion of each root was placed in contact with inoculum of Enterococcus faecalis in Brain Heart Infusion (BHI) culture media. Findings showed that the mean number of days for bacterial penetration in the Tetraclean group was greater than for other experimental groups. On the other hand, the Chlor-XTRA Vista group showed the fewest mean number of days for bacterial leakage. PMID:24933773

  18. Femoral and obturator nerves palsy caused by pelvic cement extrusion after hip arthroplasty.

    PubMed

    Zwolak, Pawel; Eysel, Peer; William-Patrick Michael, Joern

    2011-03-17

    Cement extrusion into the pelvis with subsequent palsy of the obturator and femoral nerves is a rare entity after hip replacement surgery. Cemented fixation of the acetabular cup has been considered as a safe and reliable standard procedure with very good long term results. We present a case of fifty year old female patient after hip arthroplasty procedure which suffered an obturator and femoral nerve palsy caused by extrusion of bone cement into the pelvis. Postoperative X-rays and CT-scan of the pelvis demonstrated a huge mass consisted of bone cement in close proximity of femoral and obturator nerves. The surgery charts reported shallow and weak bony substance in postero-superior aspect of the acetabulum. This weak bony acetabular substance may have caused extrusion of bone cement during press-fitting of the polyethylene cup into the acetabulum, and the following damage of the both nerves produced by polymerization of bone cement. The bone cement fragment has been surgically removed 3 weeks after arthroplasty. The female patient underwent intensive postoperative physical therapy and electro stimulation which resulted in full recovery of the patient to daily routine and almost normal electromyography results. PMID:21808718

  19. Comparative evaluation of endodontic pressure syringe, insulin syringe, jiffy tube, and local anesthetic syringe in obturation of primary teeth: An in vitro study

    PubMed Central

    Hiremath, Mallayya C.; Srivastava, Pooja

    2016-01-01

    Purpose: The purpose of this in vitro study was to compare four methods of root canal obturation in primary teeth using conventional radiography. Materials and Methods: A total of 96 root canals of primary molars were prepared and obturated with zinc oxide eugenol. Obturation methods compared were endodontic pressure syringe, insulin syringe, jiffy tube, and local anesthetic syringe. The root canal obturations were evaluated by conventional radiography for the length of obturation and presence of voids. The obtained data were analyzed using Chi-square test. Results: The results showed significant differences between the four groups for the length of obturation (P < 0.05). The endodontic pressure syringe showed the best results (98.5% optimal fillings) and jiffy tube showed the poor results (37.5% optimal fillings) for the length of obturation. The insulin syringe (79.2% optimal fillings) and local anesthetic syringe (66.7% optimal fillings) showed acceptable results for the length of root canal obturation. However, minor voids were present in all the four techniques used. Conclusions: Endodontic pressure syringe produced the best results in terms of length of obturation and controlling paste extrusion from the apical foramen. However, insulin syringe and local anesthetic syringe can be used as effective alternative methods. PMID:27433062

  20. Multipotent mesenchymal stem cells from human subacromial bursa: potential for cell based tendon tissue engineering.

    PubMed

    Song, Na; Armstrong, April D; Li, Feng; Ouyang, Hongsheng; Niyibizi, Christopher

    2014-01-01

    Rotator cuff injuries are a common clinical problem either as a result of overuse or aging. Biological approaches to tendon repair that involve use of scaffolding materials or cell-based approaches are currently being investigated. The cell-based approaches are focused on applying multipotent mesenchymal stem cells (MSCs) mostly harvested from bone marrow. In the present study, we focused on characterizing cells harvested from tissues associated with rotator cuff tendons based on an assumption that these cells would be more appropriate for tendon repair. We isolated MSCs from bursa tissue associated with rotator cuff tendons and characterized them for multilineage differentiation in vitro and in vivo. Human bursa was obtained from patients undergoing rotator cuff surgery and cells within were isolated using collagenase and dispase digestion. The cells isolated from the tissues were characterized for osteoblastic, adipogenic, chondrogenic, and tenogenic differentiation in vitro and in vivo. The results showed that the cells isolated from bursa tissue exhibited MSCs characteristics as evidenced by the expression of putative cell surface markers attributed to MSCs. The cells exhibited high proliferative capacity and differentiated toward cells of mesenchymal lineages with high efficiency. Bursa-derived cells expressed markers of tenocytes when treated with bone morphogenetic protein-12 (BMP-12) and assumed aligned morphology in culture. Bursa cells pretreated with BMP-12 and seeded in ceramic scaffolds formed extensive bone, as well as tendon-like tissue in vivo. Bone formation was demonstrated by histological analysis and immunofluorescence for DMP-1 in tissue sections made from the scaffolds seeded with the cells. Tendon-like tissue formed in vivo consisted of parallel collagen fibres typical of tendon tissues. Bursa-derived cells also formed a fibrocartilagenous tissue in the ceramic scaffolds. Taken together, the results demonstrate a new source of MSCs with a

  1. Multipotent Mesenchymal Stem Cells from Human Subacromial Bursa: Potential for Cell Based Tendon Tissue Engineering

    PubMed Central

    Song, Na; Armstrong, April D.; Li, Feng; Ouyang, Hongsheng

    2014-01-01

    Rotator cuff injuries are a common clinical problem either as a result of overuse or aging. Biological approaches to tendon repair that involve use of scaffolding materials or cell-based approaches are currently being investigated. The cell-based approaches are focused on applying multipotent mesenchymal stem cells (MSCs) mostly harvested from bone marrow. In the present study, we focused on characterizing cells harvested from tissues associated with rotator cuff tendons based on an assumption that these cells would be more appropriate for tendon repair. We isolated MSCs from bursa tissue associated with rotator cuff tendons and characterized them for multilineage differentiation in vitro and in vivo. Human bursa was obtained from patients undergoing rotator cuff surgery and cells within were isolated using collagenase and dispase digestion. The cells isolated from the tissues were characterized for osteoblastic, adipogenic, chondrogenic, and tenogenic differentiation in vitro and in vivo. The results showed that the cells isolated from bursa tissue exhibited MSCs characteristics as evidenced by the expression of putative cell surface markers attributed to MSCs. The cells exhibited high proliferative capacity and differentiated toward cells of mesenchymal lineages with high efficiency. Bursa-derived cells expressed markers of tenocytes when treated with bone morphogenetic protein-12 (BMP-12) and assumed aligned morphology in culture. Bursa cells pretreated with BMP-12 and seeded in ceramic scaffolds formed extensive bone, as well as tendon-like tissue in vivo. Bone formation was demonstrated by histological analysis and immunofluorescence for DMP-1 in tissue sections made from the scaffolds seeded with the cells. Tendon-like tissue formed in vivo consisted of parallel collagen fibres typical of tendon tissues. Bursa-derived cells also formed a fibrocartilagenous tissue in the ceramic scaffolds. Taken together, the results demonstrate a new source of MSCs with a

  2. Comparison of ProTaper and Mtwo retreatment systems in the removal of resin-based root canal obturation materials during retreatment.

    PubMed

    Iriboz, Emre; Sazak Öveçoğlu, Hesna

    2014-04-01

    To evaluate the effectiveness of the ProTaper and Mtwo retreatment systems for removal of resin-based obturation techniques during retreatment. A total of 160 maxillary anterior teeth were enlarged to size 30 using ProTaper and Mtwo rotary instruments. Teeth were randomly divided into eight groups. Resilon + Epiphany, gutta-percha + Epiphany, gutta-percha + AH Plus and gutta-percha + Kerr Pulp Canal Sealer (PCS) combinations were used for obturation. ProTaper and Mtwo retreatment files were used for removal of root canal treatments. After clearing the roots, the teeth were split vertically into halves, and the cleanliness of the canal walls was determined by scanning electron microscopy. Specimens obturated with gutta-percha and Kerr PCS displayed significantly more remnant obturation material than did specimens filled with resin-based obturation materials. Teeth prepared with Mtwo instruments contained significantly more remnant filling material than did teeth prepared with ProTaper. ProTaper files were significantly faster than Mtwo instruments in terms of the mean time of retreatment and time required to reach working length. The Resilon + Epiphany and AH Plus + gutta-percha obturation materials were removed more easily than were the Epiphany + gutta-percha and Kerr PCS + gutta-percha obturation materials. Although ProTaper retreatment files worked faster than did Mtwo retreatment files in terms of removing root canal obturation materials, both retreatment systems are effective, reliable and fast. PMID:24697958

  3. Interstitial microwave hyperthermia and brachytherapy for malignancies of the vulva and vagina. I: Design and testing of a modified intracavitary obturator.

    PubMed

    Ryan, T P; Taylor, J H; Coughlin, C T

    1992-01-01

    A vaginal obturator was fabricated to be used in combination with implanted catheters to provide microwave hyperthermia and brachytherapy to the vulva and vaginal wall. This site is difficult to heat or irradiate solely with interstitial techniques. The obturator was modified to provide grooves for the mounting of interstitial catheters into the outer wall and was matched with a template for circumferential implants. Power deposition tests were done using arrays of three microwave antenna designs: dipole (hA = hB = 3.9 cm), helical (3.9 cm coil, shorted), and modified dipole (1.0 cm helix on dipole tip) to test the performance of the obturator. The obturator and four non-obturator catheters were positioned in muscle-equivalent phantom. Two obturator catheters along with two free-standing catheters formed the obturator array. Four freestanding catheters formed the non-obturator array. Power deposition or specific absorption rate (SAR) measurements were made along the central axis, bisect, and diagonal transect of each array. SAR results showed that antennas in the obturator wall radiated as dipole theory predicts, although with less power density when compared to antennas in the same catheters spaced 1.8 cm from the obturator. This could be compensated for by increasing the power to the antennas in the obturator by 42%. Adjacent pairs of antennas were placed 90 degrees out of phase for 0.25 sec and rotated around the array. Phase rotation demonstrated that the central array SAR peaks could be lowered from 100% to 50% SAR, with dipole antennas thus resulting in lowered peak temperatures and the ability to heat larger volumes by improving the distribution of power. With helical antennas, there was 50% SAR at the array center when operated coherently without phase rotation. Three patients were treated with the obturator and a custom-made template using dipole antennas, and temperatures were measured in five obturator catheters. Therapeutic heating was measured in the

  4. Ultrasound Guided Obturator Versus Sciatic Nerve Block in Addition to Continuous Femoral Nerve Block for Analgesia After Total Knee Arthroplasty

    PubMed Central

    Sato, Keita; Sai, Seijyu; Shirai, Naoto; Adachi, Takehiko

    2011-01-01

    Both obturator and sciatic nerve block in combination with femoral nerve block (FNB) have been suggested to be useful in relieving pain after total knee arthroplasty (TKA), compared with FNB alone. We compared their efficacy in this retrospective study. For six consecutive months, patients undergoing unilateral TKA under general anesthesia with continuous FNB plus obturator nerve block (n = 8) or continuous FNB plus sciatic nerve block (n = 8) were investigated. Knee pain was assessed using visual analogue scale (VAS) on the day of surgery and on postoperative days one to three. In addition, we also investigated intraoperative and postoperative morphine consumption. VAS scores and total morphine consumption were not different between the two groups, although patients in the FNB plus sciatic nerve block group were administered less morphine during surgery. Sciatic nerve block with continuous FNB may be superior to obturator nerve block with continuous FNB for analgesia during surgery for TKA. PMID:23885188

  5. Quality of root canal fillings using three gutta-percha obturation techniques

    PubMed Central

    Ho, Edith Siu Shan; Chang, Jeffrey Wen Wei

    2016-01-01

    Objectives The goal of this study was to compare the density of gutta-percha root fillings obturated with the following techniques: cold lateral (CL) compaction, ultrasonic lateral (UL) compaction, and warm vertical (WV) compaction. Materials and Methods Thirty-three extracted mandibular first molars, with two separate mesial canals in each, were selected. After instrumentation, the canals were stratified into three groups based on canal length and curvature, and underwent obturation with one of the techniques. No sealer was used in order to avoid masking any voids. The teeth were imaged pre- and post-obturation using micro-computed tomography. The reconstructed three-dimensional images were analyzed volumetrically to determine the amount of gutta-percha present in every 2 mm segment of the canal. P values < 0.05 were considered to indicate statistical significance. Results The overall mean volume fraction of gutta-percha was 68.51 ± 6.75% for CL, 86.56 ± 5.00% for UL, and 88.91 ± 5.16% for WV. Significant differences were found between CL and UL and between CL and WV (p < 0.05), but not between UL and WV (p = 0.526). The gutta-percha density of the roots treated with WV and UL increased towards the coronal aspect, but this trend was not noted in the CL group. Conclusions WV compaction and UL compaction produced a significantly denser gutta-percha root filling than CL compaction. The density of gutta-percha was observed to increase towards the coronal aspect when the former two techniques were used. PMID:26877987

  6. Modified functional obturator for the consideration of facial growth in the mucoepidermoid carcinoma pediatric patient.

    PubMed

    Kim, Soung Min; Park, Min Woo; Cho, Young Ah; Myoung, Hoon; Lee, Jong Ho; Lee, Suk Keun

    2015-10-01

    Mucoepidermoid carcinoma (MEC) is a common salivary gland tumor in a adults but is very rare in pediatric patients. The standard treatment of MEC is en bloc resection with wide safety margins and subsequent reconstruction of the jaw, but few surgeons or pediatric specialists have experience with this procedure. An 11-year-old boy received a hemi-maxillectomy with subsequent application of the modified functional obturator (MFO) by the functional matrix concept of Moss. And the patient's face showed normal growth pattern. The purpose of this report is to demonstrate the novel concept of pediatric maxillary reconstruction using MFO for the consideration of facial growth. PMID:26235731

  7. Prosthetic rehabilitation of a maxillectomy with a two-piece hollow bulb obturator. A clinical report.

    PubMed

    Padmanabhan, T V; Kumar, V Anand; Mohamed, K Kasim; Unnikrishnan, Nandini

    2011-07-01

    Extensive bilateral midfacial defects involving the upper jaw, palate, and sinus present a formidable reconstructive challenge. A combination of total and subtotal maxillectomy is, in general, a rare surgical procedure that affects the cosmetic, functional, and psychological aspects of a patient's life. Prosthetic restoration has become the preferred method for the rehabilitation of such conditions. The use of magnets is an efficient means of providing combined prostheses with retention, quality, and stability. This clinical report describes the rehabilitation of a total and subtotal maxillectomy patient with a two-piece hollow bulb obturator retained with the help of magnets and a retention clasp. PMID:21651640

  8. Lipoma arborescens arising in the extra-articular bursa of the knee joint

    PubMed Central

    Minami, Shinji; Miyake, Yusuke; Kinoshita, Hirofumi

    2016-01-01

    Lipoma arborescens arising in the extra-articular bursa of the knee joint is extremely rare. We describe an 11-year-old boy who complained of a gradual swelling mass of the lateral knee joint. Magnetic resonance imaging (MRI) showed a high signal intensity tumor on T1- and T2-weighted images with a thickened septa and nodular lesion that showed low signal intensity. The radiologist suggested the possible differential diagnosis of well-differentiated liposarcoma. At operation, the tumor was found under the iliotibial tract and was not in contact with the knee joint. Histopathologically, this lesion was diagnosed as lipoma arborescens arising in the extra-articular bursa of the knee joint. On MRI, the appearance of lipoma arborescens arising in the extra-articular bursa of the knee joint differed from that of conventional intra-articular lipoma arborescens. In this report, we describe a case of extra-articular lipoma arborescens of the knee joint bursa and discuss the diagnosis and etiology. PMID:27382924

  9. Detection and phylogenetic characterization of Theileria spp. and Anaplasma marginale in Rhipicephalus bursa in Portugal.

    PubMed

    Ferrolho, Joana; Antunes, Sandra; Santos, Ana S; Velez, Rita; Padre, Ludovina; Cabezas-Cruz, Alejandro; Santos-Silva, Maria Margarida; Domingos, Ana

    2016-04-01

    Ticks are obligatory blood-sucking arthropod (Acari:Ixodida) ectoparasites of domestic and wild animals as well as humans. The incidence of tick-borne diseases is rising worldwide, challenging our approach toward diagnosis, treatment and control options. Rhipicephalus bursa Canestrini and Fanzago, 1877, a two-host tick widely distributed in the Palearctic Mediterranean region, is considered a multi-host tick that can be commonly found on sheep, goats and cattle, and occasionally on horses, dogs, deer and humans. R. bursa is a species involved in the transmission of several tick-borne pathogens with a known impact on animal health and production. The aim of this study was to estimate R. bursa prevalence in Portugal Mainland and circulating pathogens in order to contribute to a better knowledge of the impact of this tick species. Anaplasma marginale and Theileria spp. were detected and classified using phylogenetic analysis. This is the first report of Theileria annulata and Theileria equi detection in R. bursa ticks feeding on cattle and horses, respectively, in Portugal. This study contributes toward the identification of currently circulating pathogens in this tick species as a prerequisite for developing future effective anti-tick control measures. PMID:26797395

  10. mRNA expression in different developmental stages of the chicken bursa of Fabricius.

    PubMed

    Liu, Xiao-Dong; Zhang, Fubo; Shan, Hu; Wang, Shu-Bai; Chen, Pu-Yan

    2016-08-01

    The bursa of Fabricius, the central humoral immune organ unique to birds, plays an important role in B-lymphocyte differentiation. In order to gain a better understanding of the molecular mechanism of critical biological processes like B-cell immigration, differentiation, and final emigration, the transcriptional changes during embryonic and posthatch development of this organ were investigated. We generated a cDNA library from total RNA isolated from 3 representative developmental stages (embryonic day [ED] 10, posthatch d 2 and d 21). We generated over 70 million high-quality reads from the cDNA library by using deep sequencing. The uniquely mapped sequences of ED 10, d 2 and d 21 were 71087280, 59167491 and 70263675 respectively. All of the differential expressed genes were involved in Vitamin A metabolism, regulation of actin cytoskeleton, Wnt signaling pathway, MAPK signaling pathway, Jak-STAT signaling pathway, Notch signaling pathway, Toll-like receptor signaling pathway. The RNA-seq analysis provides a powerful method for analyzing the transcriptome and investigating the transcriptional changes of different development stages of bursa of Fabricius. The assembled bursa transcriptome provides an essential resource for future investigations about chicken Bursa development. PMID:26994188

  11. Ground Motion Simulations for Bursa Region (Turkey) Using Input Parameters derived from the Regional Seismic Network

    NASA Astrophysics Data System (ADS)

    Unal, B.; Askan, A.

    2014-12-01

    Earthquakes are among the most destructive natural disasters in Turkey and it is important to assess seismicity in different regions with the use of seismic networks. Bursa is located in Marmara Region, Northwestern Turkey and to the south of the very active North Anatolian Fault Zone. With around three million inhabitants and key industrial facilities of the country, Bursa is the fourth largest city in Turkey. Since most of the focus is on North Anatolian Fault zone, despite its significant seismicity, Bursa area has not been investigated extensively until recently. For reliable seismic hazard estimations and seismic design of structures, assessment of potential ground motions in this region is essential using both recorded and simulated data. In this study, we employ stochastic finite-fault simulation with dynamic corner frequency approach to model previous events as well to assess potential earthquakes in Bursa. To ensure simulations with reliable synthetic ground motion outputs, the input parameters must be carefully derived from regional data. In this study, using strong motion data collected at 33 stations in the region, site-specific parameters such as near-surface high frequency attenuation parameter and amplifications are obtained. Similarly, source and path parameters are adopted from previous studies that as well employ regional data. Initially, major previous events in the region are verified by comparing the records with the corresponding synthetics. Then simulations of scenario events in the region are performed. We present the results in terms of spatial distribution of peak ground motion parameters and time histories at selected locations.

  12. Photoelastic analysis to compare implant-retained and conventional obturator dentures

    NASA Astrophysics Data System (ADS)

    Goiato, Marcelo Coelho; Prado Ribeiro, Paula do; Pellizzer, Eduardo Piza; Pesqueira, Aldiéris Alves; Haddad, Marcela Filiè; dos Santos, Daniela Micheline; Moreno, Amália

    2012-06-01

    The use of photoelastic analysis contributes to the rehabilitation of patients with oral-sinus-nasal sequelae, which in turn affect important functions such as chewing, swallowing, and speech. The prosthetic rehabilitation with implant-retained dentures is a suitable treatment option. The purpose of this study was to verify, by using a photoelastic analysis, the stress distribution in implant-retained palatal obturator dentures (relined or not) associated with different attachment systems (O-ring, bar-clip, and bar-clip associated with distally placed O-rings). Two photoelastic models were obtained from an experimental maxillary cast presenting an oral-nasal communication. One model had two 13-mm length implants placed on the left region. A total of eight colorless maxillary obturators were fabricated and subsequently four of them were relined with soft silicone soft, and three had attachment systems associated. The assembly (model/attachment system/prosthesis) was positioned in a circular polariscope and a 100-N load was applied at 10 mm/s. The results showed that the denture relining influenced the distribution and amount of stress on the models. The O-ring group displayed the lowest stress levels, followed by bar-clip system associated with distally placed O-rings and bar-clip groups.

  13. Genomic signature of successful colonization of Eurasia by the allopolyploid shepherd's purse (Capsella bursa-pastoris).

    PubMed

    Cornille, A; Salcedo, A; Kryvokhyzha, D; Glémin, S; Holm, K; Wright, S I; Lascoux, M

    2016-01-01

    Polyploidization is a dominant feature of flowering plant evolution. However, detailed genomic analyses of the interpopulation diversification of polyploids following genome duplication are still in their infancy, mainly because of methodological limits, both in terms of sequencing and computational analyses. The shepherd's purse (Capsella bursa-pastoris) is one of the most common weed species in the world. It is highly self-fertilizing, and recent genomic data indicate that it is an allopolyploid, resulting from hybridization between the ancestors of the diploid species Capsella grandiflora and Capsella orientalis. Here, we investigated the genomic diversity of C. bursa-pastoris, its population structure and demographic history, following allopolyploidization in Eurasia. To that end, we genotyped 261 C. bursa-pastoris accessions spread across Europe, the Middle East and Asia, using genotyping-by-sequencing, leading to a total of 4274 SNPs after quality control. Bayesian clustering analyses revealed three distinct genetic clusters in Eurasia: one cluster grouping samples from Western Europe and Southeastern Siberia, the second one centred on Eastern Asia and the third one in the Middle East. Approximate Bayesian computation (ABC) supported the hypothesis that C. bursa-pastoris underwent a typical colonization history involving low gene flow among colonizing populations, likely starting from the Middle East towards Europe and followed by successive human-mediated expansions into Eastern Asia. Altogether, these findings bring new insights into the recent multistage colonization history of the allotetraploid C. bursa-pastoris and highlight ABC and genotyping-by-sequencing data as promising but still challenging tools to infer demographic histories of selfing allopolyploids. PMID:26607306

  14. [The normal aspect of the suprapatellar bursa in echography of the knee].

    PubMed

    Martino, F; Angelelli, G; Ettorre, G C; Macarini, L; Patella, V; Moretti, B; Pesce, V; Nardella, M

    1992-01-01

    Sonography is suitable to recognize fluids in the suprapatellar bursa, which can represent an indirect sign of intra-articular knee effusion. In order to obtain the physiologic parameters of suprapatellar bursa, 50 healthy volunteers, 38 sedentary and 12 sportsmen, were evaluated by means of US. The bursa was recognizable in 8/50 cases (16%) with quadriceps in prolapse (mean thickness: 1.8 mm, mean length: 20.5 mm), and in 23/50 cases (46%) with quadriceps in contraction (mean thickness: 2.6 mm, mean length: 22.6 mm). Suprapatellar bursal thickness ranged 1-4 mm, and its length ranged 12-44 mm. The suprapatellar bursa appeared as a well-defined hypoechoic band, cranial to patella, anterior to the distal femoral shaft, and posterior to quadriceps tendon. Quadriceps contraction increases both thickness and length of bursal swelling (1 and 2 mm, respectively, on the average). When sportsmen were compared with sedentary subjects, suprapatellar bursa diameters were observed not to change, but the bursal itself was evident in 3/12 (25%) and in 8/12 (66%) of cases, according to whether the quadriceps was in prolapse or in contraction. Bursal contents were homogeneously anechoic and bursal outline smooth and regular in all cases (23/23). Bursal morphology was symmetric, in 23/23 cases, in length, regularity of outline, and echogenicity of contents. Thickness alone resulted asymmetrical in 2/23 subjects (8%), even though variations were less than or equal to 2 mm. In conclusion, we can consider as pathologic features: thickness greater than 3-4 mm, asymmetry greater than 2 mm, irregular outline, and inhomogeneous contents. These parameters must be examined in pathologic subjects and further research is mandatory. PMID:1557543

  15. Comparative Evaluation of Three Different Obturating Techniques Lateral Compaction, Thermafil and Calamus for Filling Area and Voids Using Cone Beam Computed Tomography: An Invitro study

    PubMed Central

    Dhingra, Anil; Panwar, Nidhi R

    2015-01-01

    Introduction The success of root canal treatment depends upon the proper sealing of root canal system. Improper apical seal leads to the microleakage which can be prevented by proper obturation technique. Aim To compare the quality of three different root canal obturation techniques: lateral compaction, Thermafil and Calamus by using cone beam computed tomography. Materials and Methods A total of 30 central incisors were selected. Biomechanical preparation was done by Reciproc file no 25. Teeth were divided into 3 groups of 10 teeth each according to the obturation technique i.e. Calamus, Thermafil and lateral compaction. Cone beam computed tomography was used to measure filling area and voids at coronal, middle and apical third of the root canal after obturation by different techniques. Data was statistically analysed by One-Way Anova and multiple comparison of Tukey HSD tests. Result The maximum amount of obturating material was observed in Calamus group followed by Thermafil and lateral compaction. Minimum voids were seen in obturation by Calamus technique. Conclusion Within the limitations of this study, it can be concluded that Calamus may be a good obturation technique. PMID:26436038

  16. Penetration of a resin-based filling material into lateral root canals and quality of obturation by different techniques.

    PubMed

    Michelotto, André Luiz da Costa; Moura-Netto, Cacio; Araki, Angela Toshie; Akisue, Eduardo; Sydney, Gilson Blitzkow

    2015-01-01

    The aim of this study was to evaluate the penetration of a resin/polyester polymer-based material (Resilon Real Seal; SybronEndo Corp., Orange, USA) into simulated lateral canals, and the quality of obturations by different techniques. A total of 30 standardized simulated canals were divided into three groups according to the technique of obturation used: MS (McSpadden), SB (SystemB/Obtura II), and LC (Lateral Condensation). To analyze the penetration of the filling material, the simulated canals were digitalized and the images were analyzed using the Leica QWIN Pro v2.3 software. The data of the middle and apical thirds were separately submitted to analysis of variance (ANOVA), followed by the Tukey's test for the comparison of the techniques. Results showed a significant difference (p < 0.05) between groups (LC < SB) in the middle third, and a significant difference (p < 0.05) between groups (LC < SB and MS < SB) in the apical third. To analyze the quality of the obturations, the canals were radiographed and evaluated by three examiners. The Kappa test on interexaminer agreement and the nonparametric Kruskal-Wallis test indicated no significant difference between filling techniques. It was concluded that Resilon achieves greater levels of penetration when associated with thermoplastic obturation techniques. PMID:25466332

  17. Ability of New Obturation Materials to Improve the Seal of the Root Canal System – A Review

    PubMed Central

    Zhang, Wei; Olsen, Mark; De-Deus, Gustavo; Eid, Ashraf A.; Chen, Ji-hua; Pashley, David H.; Tay, Franklin R.

    2014-01-01

    Objectives New obturation biomaterials have been introduced over the past decade to improve the seal of the root canal system. However, it is not clear whether they have really produced a three-dimensional impervious seal that is important for reducing diseases associated with root canal treatment. Methods A review of the literature was performed to identify models that have been employed for evaluating the seal of the root canal system. Results and Significance In-vitro and in-vivo models are not totally adept at quantifying the seal of root canals obturated with classic materials. Thus, one has to resort to clinical outcomes to examine whether there are real benefits associated with the use of recently-introduced materials for obturating root canals. However, there is no facile answer because endodontic treatment outcomes are influenced by a host of other predictors that are more likely to take precedence over the influence of obturation materials. From the perspective of clinical performance, classic root filling materials have stood the test of time. Because many of the recently-introduced materials are so new, there is not enough evidence yet to support their ability to improve clinical performance. This emphasizes the need to translate anecdotal information into clinically relevant research data on new biomaterials. PMID:24321349

  18. Coronal Microleakage of the Resilon and Gutta-Percha Obturation Materials with Epiphany SE Sealer: An in-vitro Study

    PubMed Central

    Al-Maswary, Arwa Ahmed; Alhadainy, Hatem Abdel-Hameed

    2016-01-01

    Introduction The coronal leakage of bacteria and other irritants to the root canal system is one of the main factors that may result in clinical failure and affect the long term success of endodontic treatment. The Resilon/Epiphany obturation system has been developed as an alternative to gutta-percha and traditional sealers. Aim This study aimed to evaluate and compare the coronal leakage between Resilon obturation material and gutta-percha using the same sealer. Materials and Methods In this in-vitro study, 72 freshly extracted single-rooted human teeth were used, and were sectioned at CEJ with 13mm length. The roots were randomly divided into four groups. In Group I, 30 roots were obturated using Resilon and Epiphany SE sealer, Group II, 30 roots were obturated using gutta-percha and Epiphany SE. Group III and Group IV, 12 roots were used as control groups (positive and negative). The coronal leakage was measured using the dye penetration technique. Data were statistically analysed by a One-Way ANOVA test. Results There was a significant difference between the two experimental groups where Resilon revealed less microleakage than gutta-percha group (p <0.05). Conclusion Resilon is a suitable replacement for gutta-percha on the basis of its increased resistance to microleakage, but it failed to provide complete hermetic coronal sealing. PMID:27437358

  19. Microleakage of Single-Cone Gutta-Percha Obturation Technique in Combination with Different Types of Sealers

    PubMed Central

    Sadr, Saeedeh; Golmoradizadeh, Ali; Raoof, Maryam; Tabanfar, Mohammad Javad

    2015-01-01

    Introduction: Various materials and methods have been recommended for successful root canal obturation. The aim of this experimental in vitro study was to compare the sealing ability of three root canal sealers AH-26, glass ionomer cement (GIC) and zinc oxide eugenol (ZOE) in single gutta-percha obturating system. Methods and Materials: Seventy extracted single-rooted human teeth were decoronated. The teeth were randomly divided into 3 experimental groups (n=20) and 2 positive and negative control groups. After root canal preparation, canals were obturated with single-cone method using either AH-26, GIC and ZOE. The leakage was evaluated using the dye penetration method. The samples were sectioned to evaluate the linear leakage using a stereomicroscope. The data were analyzed using the One-way ANOVA test. Results: All the specimens in the positive control group showed evidence of leakage. In the experimental groups, the lowest leakage scores were observed in the AH-26 group (P<0.05). However, there were no statistically significant differences between GIC and ZOE samples (P=0.676). Conclusion: AH-26 showed a superior seal and less microleakage compared to the two other materials in single gutta-percha obturating system. PMID:26213544

  20. Quality of Obturation Achieved by an Endodontic Core-carrier System with Crosslinked Gutta-percha Carrier in Single-rooted Canals

    PubMed Central

    Li, Guo-hua; Niu, Li-na; Selem, Lisa C.; Eid, Ashraf A.; Bergeron, Brian E.; Chen, Ji-hua; Pashley, David H.; Tay, Franklin R.

    2014-01-01

    Objectives The present study examined the quality of obturation in root canals obturated by GuttaCore, a gutta-percha-based core-carrier system with a cross-linked thermoset gutta-percha carrier, by comparing the incidence of gaps and voids identified from similar canals obturated by cold lateral compaction or warm vertical compaction. Methods Thirty single-rooted premolars with oval-shaped canals were shaped and cleaned, and obturated with one of the three obturation techniques (N=10): GuttaCore, warm vertical compaction or cold lateral compaction. Filled canals were scanned with micro-computed tomography (micro-CT); reconstructed images were analysed for the volumetric percentage of gaps and voids at 3 canal levels (0-4 mm, 4-8 mm and 8-12 mm from working length). The roots were subsequently sectioned at the 4-mm, 8-mm and 12-mm levels for analyses of the percentage of interfacial gaps, and area percentage of interfacial and intracanal voids, using scanning electron microscopy (SEM) to examine negative replicas of root sections. Data were analysed with parametric or non-parametric statistical methods at α=0.05. Results Both micro-CT and SEM data indicated that canals obturated with GuttaCore core-carriers had the lowest incidence of interfacial gaps and voids, although the results were not significantly different from canals obturated by warm vertical compaction. Both the GuttaCore and the warm vertical compaction groups, in turn, had significantly lower incidences of gaps and voids than the cold lateral compaction group. Conclusions Because of the similarity in obturation quality between GuttaCore and warm vertical compaction, practitioners may find the GuttaCore core-carrier technique a valuable alternative for obturation of oval-shaped canals. PMID:24769108

  1. Comparison of Obturation Quality in Modified Continuous Wave Compaction, Continuous Wave Compaction, Lateral Compaction and Warm Vertical Compaction Techniques

    PubMed Central

    Aminsobhani, Mohsen; Ghorbanzadeh, Abdollah; Sharifian, Mohammad Reza; Namjou, Sara; Kharazifard, Mohamad Javad

    2015-01-01

    Objectives: The aim of this study was to introduce modified continuous wave compaction (MCWC) technique and compare its obturation quality with that of lateral compaction (LC), warm vertical compaction (WVC) and continuous wave compaction techniques (CWC). The obturation time was also compared among the four techniques. Materials and Methods: Sixty-four single-rooted teeth with 0–5° root canal curve and 64 artificially created root canals with 15° curves in acrylic blocks were evaluated. The teeth and acrylic specimens were each divided into four subgroups of 16 for testing the obturation quality of four techniques namely LC, WVC, CWC and MCWC. Canals were prepared using the Mtwo rotary system and filled with respect to their group allocation. Obturation time was recorded. On digital radiographs, the ratio of area of voids to the total area of filled canals was calculated using the Image J software. Adaptation of the filling materials to the canal walls was assessed at three cross-sections under a stereomicroscope (X30). Data were statistically analyzed using ANOVA, Tukey’s post hoc HSD test, the Kruskal Wallis test and t-test. Results: No significant difference existed in adaptation of filling materials to canal walls among the four subgroups in teeth samples (P ≥ 0.139); but, in artificially created canals in acrylic blocks, the frequency of areas not adapted to the canal walls was significantly higher in LC technique compared to MCWC (P ≤ 0.02). The void areas were significantly more in the LC technique than in other techniques in teeth (P < 0.001). The longest obturation time belonged to WVC technique followed by LC, CW and MCWC techniques (P<0.05). The difference between the artificially created canals in blocks and teeth regarding the obturation time was not significant (P = 0.41). Conclusion: Within the limitations of this in vitro study, MCWC technique resulted in better adaptation of gutta-percha to canal walls than LC at all cross-sections with

  2. Evaluation of fracture resistance of roots obturated with resilon and thermoplasticized gutta-percha: An in vitro study

    PubMed Central

    Kumar, Pravin; Kaur, Navsangeet Mangat; Arora, Saurabh; Dixit, Seema

    2014-01-01

    Aim: To investigate and compare the fracture resistance of resilon and realseal filled root canals with those that were obturated with thermoplasticized gutta-percha and AH-plus endodontic sealer. Materials and Methods: Eighty extracted human mandibular single-rooted premolars stored in 10% formalin were used in this study. They were prepared by using a crown-down technique, debrided and irrigated with NaOCl, EDTA, and normal saline and divided into four groups. Group I = Negative control, canals prepared but no obturation was done; Group II = Positive control obturated with dual cure composite resin; Group III = Obturated with thermoplasticized GP and AH-plus; Group IV = Obturated with resilon and realseal. All root specimens were stored for two weeks in 100% humidity to allow for complete setting of the sealer. Each specimen was mounted in acrylic in a polyvinyl ring and tested for fracture resistance with a universal testing machine. The loading fixture of the machine was mounted with its spherical tip aligned with the center of the access opening of each root. A vertical loading force was applied until it fractured the root. The force values were subjected to statistical analysis: Kruskall-Wallis H-test and Mann-Whitney U-test. Results: Group comparison revealed that Group II (positive control) had significantly higher values of resistance to fracture as compared to all the other groups. While Group IV (resilon with realseal) had significantly higher values of resistance to fracture as compared to Group I (negative control). Conclusion: On the basis of our findings, it can be concluded that filling the root canals with resilon and realseal increased the in vitro resistance to fracture of single-canal extracted teeth. resilon and realseal demonstrated high fracture-resistance values and could be an alternative to the conventional gutta-percha. PMID:25125849

  3. Postoperative tetanus after laparoscopic obturator hernia repair for strangulated ileus: report of a case.

    PubMed

    Mori, Mitsuo; Iida, Haruyasu; Miki, Keita; Tsugane, Eiji; Sasaki, Miwako; Nagayama, Rintaro; Noguchi, Takaaki; Manabe, Haruki; Ohta, Fumihito; Iimura, Yuzuru

    2012-05-01

    This report presents the case of an 84-year-old woman who developed tetanus 3 days after the resection of a gangrenous small intestine caused by obturator hernia incarceration. The diagnosis of tetanus was clinically made after the appearance of generalized spastic contractions with opisthotonus. Clostridium tetani organisms residing in the gastrointestinal tract were presumed to have been endogenously inoculated into the strangulated intestine, where it produced tetanospasmin, causing tetanus. The patient successfully recovered after aggressive intensive care. There have been 16 case reports of tetanus occurring after gastrointestinal surgical procedures. Primary care physicians should thus be aware of the fact that, although extremely rare, C. tetani residing in the gastrointestinal tract can provide a possible endogenous source of tetanus infection. PMID:22037939

  4. Scratch and abrasion properties of polyurethane-based micro- and nano-hybrid obturation materials.

    PubMed

    Estevez, Miriam; Rodriguez, J Rogelio; Vargas, Susana; Guerra, J A; Brostow, Witold; Lobland, Haley E Hagg

    2013-06-01

    Polyurethane-based micro- and nano-hybrid composites were produced with controlled porosity to be used as obturation materials. In addition to hydroxyapatite (HAp) micro-particles in the composites, two different ceramics particle types were also added: alumina micro-particles and silica nano-particles. Particles of different sizes provide the materials with improved mechanical properties: the use of micro- and nano-particles produces a better packing because the nano-particles fill the interstitial space left by the micro-particles, rendering an improvement in the mechanical properties. The silica and alumina particles provide the materials with appropriate abrasion and scratching properties, while the HAp provides the required bio-acceptance. The polymeric matrix was a mono-component solvent-free polyurethane. The porosity was selected by controlling the chemical reaction. PMID:23862519

  5. A comparative study of four coronal obturation materials in endodontic treatment.

    PubMed

    Uranga, A; Blum, J Y; Esber, S; Parahy, E; Prado, C

    1999-03-01

    The aim of this study was to compare, in vitro, the ability of temporary versus permanent materials to seal the access cavity. Eighty human maxillary single-canal teeth were prepared biomechanically and obturated with gutta-percha and an endodontic cement AH Plus, using the warm vertical compaction technique. All access cavities were sealed with 1 of 4 materials (Cavit, Fermit, Tetric, or Dyract). Microleakage was assessed by methylene blue dye penetration. The teeth were submitted to 100 thermocycles, with temperature varying from 0 degree to 55 degrees C. The greatest degree of leakage was observed with the temporary materials (Cavit and Fermit). There was a significant difference (p < 0.05) in leakage between all materials except between Dyract and Tetric. This suggests that it may be more prudent to use a permanent restorative material for provisional restorations to prevent inadequate canal sealing and the resulting risk of fluid penetration. PMID:10321182

  6. Evaluation of interadductor approach in neurolytic blockade of obturator nerve in spastic patients

    PubMed Central

    Ghai, Anju; Sangwan, Sukhbir Singh; Hooda, Sarla; Garg, Nidhi; Kundu, Zile S.; Gupta, Tushar

    2013-01-01

    Background: Spasticity is a syndrome associated with a persistent increase in involuntary reflex activity of a muscle in response to stretch. Adductor muscle spasticity is a common complication of spinal cord and brain injury. It needs to be treated if it interferes with activities of daily living and self-care. Obturator neurolytic blockade is one of the cost-effective therapeutic possibilities to treat spasticity of adductor group of muscles. In this study, we assessed the efficacy of interadductor approach in alleviating the spasticity. Methods: Obturator neurolysis using 8-10 ml 6% phenol was given with the guidance of a peripheral nerve stimulator in 20 spastic patients. Technical evaluation included number of attempted needle insertions, time to accurate location of the nerve, depth of needle insertion, and success rate. Pain, spasticity, hip abduction range of motion (ROM), number of spasms, gait, and hygiene were evaluated at 1st hour, 24th hour, end of the 1st week, and in the 1st, 2nd, and 3rd months following the intervention. Results: The success rate was 100% with mean time to accurate nerve location 4.9±2.06 min. Average depth of needle insertion was 2.91±0.32 cm. Compared with the scores measured immediately before the block, all studied parameters improved significantly. An increase in the Modified Ashworth Scale values was observed in the 2nd and 3rd months, but they did not reach their initial values. Conclusion: The interadductor approach proved to be accurate and fast, with a high success rate. Phenol blockade is an efficient and cost-effective technique in patients with adductor spasticity. It led to a decrease in spasticity and pain with an increase in the ROM of the hip and better hygiene, with an efficacy lasting for about 3 months. PMID:24348294

  7. EVALUATION OF THE APICAL INFILTRATION AFTER ROOT CANAL DISRUPTION AND OBTURATION

    PubMed Central

    Gomes, João Eduardo; Hopp, Renato Nicolás; Bernabé, Pedro Felício Estrada; Nery, Mauro Juvenal; Otoboni, José Arlindo; Dezan, Elói

    2008-01-01

    The aim of this study was to evaluate two root canal filling techniques used in teeth that had their apical foramen disrupted and compare the apical infiltration with an ideal clinical situation. Twenty-seven freshly extracted single-rooted teeth were selected and radiographed to confirm the existence of a single and straight root canal. The crowns were removed at a mean distance of 11 mm from the apex. The teeth had the root canals instrumented and were randomly assigned to 3 groups (n=9): ND group - root canals were filled using the lateral compaction technique and no disruption was performed; DRF group - the apical constriction was disrupted by advancing a #40 K-file 1 mm beyond the original working length, the canals were reinstrumented to create an apical ledge at 1 mm from the apical foramen and were obturated with a master gutta-percha cone with same size as the last file used for reinstrumentation; DF group - the teeth had the apical constriction disrupted and the canals were obturated with a master gutta-percha cone that fit at 1 mm from the apex. The teeth were submitted to dye leakage test with Rhodamine B for 7 days, using vaccum on the initial 5 min. The teeth were sectioned longitudinally and the leakage was measured in a linear fashion from apex to crown. There was no statistically significant difference (p>0.05) between the groups that had the apical foramen disrupted (DF, DRF), but significant difference was found between the disrupted groups and the non-disrupted one (p<0.01). In conclusion, none of the evaluated techniques was able to prevent apical infiltration, so working length so the working length determination has to be established and maintained carefully. PMID:19089232

  8. An important Norwegian contribution to the study of the bursae of the upper and lower extremities

    PubMed Central

    2010-01-01

    We present a critical analysis of the monograph of A.S.D. Synnestvedt (1869) “En anatomisk beskrivelse af de paa over- og underestremiteterne forekommende Bursae mucosae”. The analysis was completed using anatomical information from the historically oldest publications dealing with the bursae of the extremities: Albinus (1734), Monro (1788), Rosenmüller (1799). We are of the opinion that Synnestvedt's publication is important, not only historically but also as a source of information for recent medical practitioners. Synnestvedt's monograph has a wealth of literary citations, unambiguous opinions of seasoned anatomists regarding the structure and function of the synovial membrane, and detailed descriptions of dissections he performed on fetal and adult cadavers. The information in this publication may enhance the diagnosis of bursopathies and enthesopathies of the extremities. PMID:20860444

  9. Rehabilitation of a Bilateral Maxillectomy Patient with a Free Fibula Osteocutaneous Flap and with an Implant-Retained Obturator: A Clinical Report.

    PubMed

    Otomaru, Takafumi; Sumita, Yuka I; Aimaijiang, Yiliyaer; Munakata, Motohiro; Tachikawa, Noriko; Kasugai, Shohei; Taniguchi, Hisashi

    2016-06-01

    A 47-year-old man underwent surgical resection and reconstruction with a fibula osteocutaneous flap. After the surgery, a surgical obturator was placed and adjusted. After flap healing, a conventional obturator was fabricated with polymethyl methacrylate resin and retained by the anatomical undercuts around the reconstructed fibula bone flap and the posterior part of the defect. As the defect shape changed with time, a second conventional obturator was fabricated and fitted. No further recurrence of myoepithelioma was observed for 2 years, and the patient was satisfied with the obturator during mastication and speech; however, despite having no major complaints, the patient found it difficult to chew on the right side, and the obturator was displaced slightly downward when the mouth was opened wide and shifted when chewing hard and sticky food. Thus, an implant-retained obturator was suggested to provide better retention and stability. Four dental implants were therefore placed into the fibula bone, although one did not osseointegrate because either primary stability was insufficient or overload was affected in the nonloaded implant environment and was replaced. After fitting custom abutments with a magnet, an implant-retained obturator was placed, and the patient was satisfied with the outcome. During 3 years of follow-up, no issues were noted with the implant bodies, abutments, obturator, or reconstructed site. The conventional obturator was displaced slightly downward when the patient opened his mouth wide, and it shifted when chewing hard and sticky food because there was limited fibula bone at the reconstruction site and more available posteriorly. For better retention and stability, the implant-retained obturator was fabricated with a custom abutment and magnetic retention. The patient was satisfied with the results, as improved implant retention increased the stability of the prosthesis. This clinical report describes the rehabilitation of a bilateral

  10. The caudal bursa in the Heligmonellidae (Nematoda: Trichostrongylina). Characterization and hypothesis on its evolution

    PubMed Central

    Durette-Desset, M.C.; Digiani, M.C.

    2012-01-01

    The different patterns of the caudal bursa of the Heligmonellidae (Nematoda) are redefined, taking into account the grouping of rays 2-6 and the sequence of origin of these rays from their common trunk. The type of symmetry of the caudal bursa is also redefined. The following patterns were observed and characterized: the basic patterns: types 2-3, 2-2-1, 1-3-1 and 1-4 and the intermediary patterns: type 2-3 tending to type 2-2-1, type 2-2-1 tending to type 1-3-1, type 1-3-1 tending to type 1-4 and type 2-2-1 tending to type 1-4. An evolutionary interpretation of the patterns is attempted and seems to follow the direction: 2-3 to 2-2-1 to 1-3-1 to 1-4. Seven atypical patterns are described. The caudal bursae were classified based on their symmetry: subsymmetrical, dissymmetrical and asymmetrical. Independently of the type of symmetry, the two latero-ventral lobes may have the same or different patterns. The type of symmetry, the ratio between the two latero-ventral lobes and a characteristic pattern were utilized to characterize the caudal bursae at the level of the genus and the subfamily. The combination of the right/left ratio and the type of symmetry gives heterogeneous results, with no real association between these characters. The most conspicuous asymmetries and dissymmetries were found among the Nippostrongylinae. The most frequent pattern in the Heligmonellidae is the basic type 2-2-1; types 1-3-1 and 1-4 are less frequent but are characteristic of several genera; type 1-4 is absent from the Heligmonellinae. Whatever the pattern, in the Heligmonellidae rays 4 and 5 are the last to diverge from the common trunk of rays 2-6. PMID:22314236

  11. Identification and characterization of a novel adenovirus in the cloacal bursa of gulls

    SciTech Connect

    Bodewes, R.; Bildt, M.W.G. van de; Schapendonk, C.M.E.; Leeuwen, M. van; Boheemen, S. van; Jong, A.A.W. de; Osterhaus, A.D.M.E.; Smits, S.L.; Kuiken, T.

    2013-05-25

    Several viruses of the family of Adenoviridae are associated with disease in birds. Here we report the detection of a novel adenovirus in the cloacal bursa of herring gulls (Larus argentatus) and lesser black-backed gulls (Larus fuscus) that were found dead in the Netherlands in 2001. Histopathological analysis of the cloacal bursa revealed cytomegaly and karyomegaly with basophilic intranuclear inclusions typical for adenovirus infection. The presence of an adenovirus was confirmed by electron microscopy. By random PCR in combination with deep sequencing, sequences were detected that had the best hit with known adenoviruses. Phylogenetic analysis of complete coding sequences of the hexon, penton and polymerase genes indicates that this novel virus, tentatively named Gull adenovirus, belongs to the genus Aviadenovirus. The present study demonstrates that birds of the Laridae family are infected by family-specific adenoviruses that differ from known adenoviruses in other bird species. - Highlights: ► Lesions typical for adenovirus infection detected in cloacal bursa of dead gulls. ► Confirmation of adenovirus infection by electron microscopy and deep sequencing. ► Sequence analysis indicates that it is a novel adenovirus in the genus Aviadenovirus. ► The novel (Gull) adenovirus was detected in multiple organs of two species of gulls.

  12. Progesterone receptor in chicken bursa of Fabricius and thymus: evidence for expression in B-lymphocytes.

    PubMed

    Pasanen, S; Ylikomi, T; Palojoki, E; Syvälä, H; Pelto-Huikko, M; Tuohimaa, P

    1998-06-25

    In the present work constitutive progesterone receptor (PR) expression in the chicken bursa of Fabricius was detected in the stromal, smooth muscle and follicular medullary cells and smooth muscle cells of blood vessels. PR expression was increased during sexual maturation and after estrogen treatment. Bursal medullary PR-positive cells were further characterized to be B-lymphocytes by flow cytometric analysis. In addition, estrogen induced expression of PR in the bursal FAE-cells (follicle-associated epithelial cells). In the thymus PR was expressed constitutively in the connective tissue cells of the capsule and interfollicular septa, in a few medullary cells and in vascular smooth muscle. The PR-positive medullary cells consisted of epithelial cells, large polygonal cells resembling macrophages and plasma cells. T-lymphocytes were PR-negative. Estrogen up-regulated PR expression in the thymus. Immunoblotting studies revealed that both isoforms of PR, i.e. PR-A and PR-B, were expressed in the bursa of Fabricius and thymus with PR-B dominance. These results suggest that the chicken primary lymphoid organs bursa and thymus are under regulation of estrogen and progesterone. Expression of PR in B-lymphocytes, macrophages and plasma cells in the chicken is documented for the first time and suggests evidence for direct action of progesterone on immune responses. PMID:9723893

  13. A simple method of enhancing retention in interim hollow bulb obturator in a case of an acquired palatal defect

    PubMed Central

    Karthikeyan, S.; Balu, K.; Devaki, V.; Ajay, R.

    2015-01-01

    Maxillary defects occur either as a result of surgical resection of malignant tumors of the nasal cavity and paranasal sinuses or of the congenital causes. Rehabilitation of the patients with maxillectomy defects presents a challenge in restoring the lost form, function and speech. Maxillary interim obturators in prosthetic reconstruction of the defects are often complicated with lack of adequate retention, stability, and support. This case report presents the simplified approach, to rehabilitate a case of sub-total maxillectomy due to squamous cell carcinoma of maxillary sinus, using a closed hollow bulb obturator prosthesis fabricated with a “U” loop and a modified buccal flange for enhanced retention of the prosthesis. PMID:26538969

  14. Obturator internus pyomyositis manifested as sciatica in a patient with subacute bacterial endocarditis: A rare case report.

    PubMed

    Hsu, Wei-Ching; Hsu, Jin-Yi; Chen, Michael Yu-Chih; Liang, Chung-Chao

    2016-07-01

    Pyomyositis is a pyogenic infection of the skeletal muscles causing myalgia and fever in patients. Hematogenous seeding engendered by persistent bacteremia and septic embolism is usually the underlying cause of the disease. Trauma, intravenous drug use, and immunodeficiency are the main predisposing factors.Obturator internus pyomyositis with sciatica has not previously been reported. We report a rare case of a patient with subacute bacterial endocarditis presenting with left buttock pain and sciatica.Computed tomography confirmed the diagnosis of obturator internus pyomyositis. The patient was discharged uneventfully after successful antibiotic treatment.The mortality rate of patients who have pyomyositis comorbid with another condition or disease is extremely high. Early diagnosis and aggressive management are imperative. PMID:27472717

  15. Evaluation of the Quality of Obturation with Obtura at Different Sizes of Apical Preparation Through Microleakage Testing

    PubMed Central

    Tanikonda, Rambabu; Sajjan, Girija S.; Lakshmi, B.H. Vijaya; Varma, K. Madhu; Satish, R. Kalyan

    2016-01-01

    Introduction Obturation of the root canal system is required to prevent recontamination of the root canal after cleaning and shaping procedures and to seal the root canal completely, both the apical and coronal avenues of potential leakage and to maintain the disinfected status. Aim The aim of this study was to determine the microleakage by dye leakage method at 1mm, 3mm and 5mm short of the apex with different sizes of apical preparation, obturated by Obtura. Materials and Methods Sixty freshly extracted human single rooted teeth were randomly distributed into six equal groups. Group I (control group) was obturated by lateral compaction technique. Group II to VI were experimental groups (apical preparations done upto ISO sizes 20, 30, 40, 50 and 60 respectively), obturated by Obtura technique. After storing the samples at 100% humidity for seven days and one day in 2% methylene blue, the roots of the teeth were sectioned at 3mm short of the apex. They were observed under stereomicroscope at 20X magnification and the images were analysed for microleakage using the scoring criteria. The data obtained were analysed by One-way ANOVA followed by Tukey pair-wise multiple comparison test and p ≤ 0.05 was considered as the level of significance. Results The lowest mean microleakage score was seen in Group VI (0) and the highest mean leakage score was seen in Group II (1.5). There was statistically significant difference between Group II and Group V (p = 0.044), Group II and Group VI (p = 0.013). There was no significant difference between all the other groups (p> 0.05). Conclusion Comparison of microleakage between different groups from ISO sizes 20-60 recommends a minimum apical preparation of ISO size 30. PMID:27190948

  16. Comparative Evaluation of Sealing Ability of Three Newer Root Canal Obturating Materials Guttaflow, Resilon and Thermafil: An In Vitro Study

    PubMed Central

    H Bhandi, Shilpa; T S, Subhash

    2013-01-01

    Introduction: Microleakage continues to be a main reason for failure of root canal treatment where the challenge has been to achieve an adequate seal between the internal structure and the main obturating material. The objective of this study is to compare the sealing ability of 3 newer obturating materials GuttaFlow, Resilon/Epiphany system (RES) and Thermafil, using silver nitrate dye and observing under stereomicroscope. Methodology: Thirty single rooted teeth were divided into following groups. Group I : GuttaFlow ;Group II : Resilon /Epiphany sealer Group III : Thermafil with AH-Plus sealer. Teeth were decoronated and instrumented with profile rotary system and obturated with specified materials. Apical seal was determined by dye penetration method using silver nitrate. Then the specimens were transversely sectioned at each mm till 3 mm from the apex. Dye leakage was determined using stereomicroscope. Statistical analysis of the results was performed using Kruskall-Wallis test. Results: The results showed that Group II i.e., Resilon with Epiphany sealer showed the least amount of microleakage when compared to Group I i.e., GuttaFlow and Group III i.e., Thermafil with AH-plus sealer. Conclusion: Based on the results of this study it can be concluded that RES had higher sealing ability followed by Thermafil and GuttaFlow in vitro but further studies have to be carried out to make a direct correlation between these results and invivo situation. How to cite this article: Bhandi S H, Subhash T S. Comparative Evaluation of Sealing Ability of Three Newer Root Canal Obturating Materials Guttaflow, Resilon and Thermafil: An In Vitro Study. J Int Oral Health 2013; 5(1):54-65. PMID:24155579

  17. Transvaginal Oocyte Retrieval Complicated by Life-Threatening Obturator Artery Haemorrhage and Managed by a Vessel-Preserving Technique.

    PubMed Central

    Bolster, Ferdia; Mocanu, Edgar; Geoghegan, Tony; Lawler, Leo

    2014-01-01

    We report the case of a 36-year-old woman with secondary infertility who underwent routine transvaginal oocyte retrieval as part of IVF treatment. Four days following the procedure she presented with life threatening haemorrhagic shock. She underwent surgical laparotomy followed by CT and selective angiography, which demonstrated haemorrhage from a pseudoaneurysm of the obturator artery. The haemorrhage was successfully managed endovascularly with a vessel preserving covered stent. PMID:25484463

  18. Biomechanical 3-Dimensional Finite Element Analysis of Obturator Protheses Retained with Zygomatic and Dental Implants in Maxillary Defects

    PubMed Central

    Akay, Canan; Yaluğ, Suat

    2015-01-01

    Background The objective of this study was to investigate the stress distribution in the bone around zygomatic and dental implants for 3 different implant-retained obturator prostheses designs in a Aramany class IV maxillary defect using 3-dimensional finite element analysis (FEA). Material\\Methods A 3-dimensional finite element model of an Aramany class IV defect was created. Three different implant-retained obturator prostheses were modeled: model 1 with 1 zygomatic implant and 1 dental implant, model 2 with 1 zygomatic implant and 2 dental implants, and model 3 with 2 zygomatic implants. Locator attachments were used as a superstructure. A 150-N load was applied 3 different ways. Qualitative analysis was based on the scale of maximum principal stress; values obtained through quantitative analysis are expressed in MPa. Results In all loading conditions, model 3 (when compared models 1 and 2) showed the lowest maximum principal stress value. Model 3 is the most appropirate reconstruction in Aramany class IV maxillary defects. Two zygomatic implants can reduce the stresses in model 3. The distribution of stresses on prostheses were more rational with the help of zygoma implants, which can distribute the stresses on each part of the maxilla. Conclusions Aramany class IV obturator prosthesis placement of 2 zygomatic implants in each side of the maxilla is more advantageous than placement of dental implants. In the non-defective side, increasing the number of dental implants is not as suitable as zygomatic implants. PMID:25714086

  19. Photoelastic analysis of implant-retained and conventional obturator prostheses with different attachment systems and soft relining.

    PubMed

    do Prado Ribeiro, Paula; Goiato, Marcelo Coelho; Pellizzer, Eduardo Pizza; Pesqueira, Aldiéris Alves; Haddad, Marcela Filiè; de Carvalho Dekon, Stefan Fiuza; dos Santos, Daniela Micheline

    2011-05-01

    Complete and partial loss of maxillary bone may jeopardize oral physiology and generate complications as oral-sinus-nasal communication. Palatal obturator prostheses are a treatment alternative for rehabilitation of these patients. The aim of this study was to assess stress distribution, through photoelasticity, on palatal obturator prostheses associated with different attachment systems (o'ring, bar clip, and o'ring/bar clip) of implants and submitted to relining. Two photoelastic models were fabricated according to an experimental maxillary model with oral-sinus-nasal communication. One model did not present implants, whereas the other included 2 implants with 13.0 mm in length in the left ridge. Four colorless maxillary obturator prostheses were fabricated and relined with soft silicone. One of these prostheses presented no attachment system, whereas the remaining prostheses included attachment systems adapted to the implants. The assembly (model/attachment system/prosthesis) was positioned in a circular polariscope during loading with 100 N at 10 mm/s. The results were based on observation during the experiment and photographic records of stress on the photoelastic model. The bar clip system exhibited the highest stress concentration followed by o'ring/bar clip and o'ring systems. The attachment systems presented different stress distribution with greater concentration surrounding the implants and homogenous stress distribution on the photoelastic model without implants. The highest concentration of fringes occurred, in ascending order, with o'ring, o'ring/bar clip, and bar clip systems. PMID:21558947

  20. A mini dental implant-supported obturator application in a patient with partial maxillectomy due to tumor: case report.

    PubMed

    Dilek, Ozkan Cem; Tezulas, Emre; Dincel, Mert

    2007-03-01

    Following a partial maxillectomy in a patient, the oral and nasal cavities remain open, providing a passageway for transmission of air and fluids between the 2 cavities. In such cases the primary aim should be the construction of an implant-supported obturator prosthesis with adequate retention, stability, and peripheral seal. In this case report, a 34-year-old female patient who underwent a class II (according to Okay et al.) partial maxillectomy 14 years before was fitted with an obturator that was supported by 5 mini dental implants. The reason for the preference of mini dental implants is the lack of adequate bone tissue for conventional implant placement in the resected area and the placement of mini dental implants with a simple surgical procedure. The treatment achieved restoration of the lost functions, which satisfied the patient, restoring her self-confidence and enhancing her quality of life. Thus, applying obturators supported by mini dental implants was successful and may be considered as an alternative to more complicated surgical techniques. Although the presented case is promising, further clinical research is needed to draw more definite conclusions. PMID:17197207

  1. The influence of obturation technique on sealer thickness and depth of sealer penetration into dentinal tubules evaluated by computer-aided digital analysis.

    PubMed

    Ravindranath, Mithun; Neelakantan, Prasanna; Karpagavinayagam, Kumaraguru; Subba Rao, C V

    2011-01-01

    The aim of this study was to determine sealer penetration into dentinal tubules and sealer thickness with different obturation materials and techniques, with the null hypothesis that sealer cement thickness and dentinal tubule penetration was not affected by obturation technique. This study used 180 freshly extracted human mandibular premolars. Samples were obturated using the lateral condensation technique with either gutta-percha (Group 1) or Resilon (Group 2), using AH Plus (subgroup A) or Epiphany (subgroup B) as a sealer. Other samples were obturated with One-Step Obturator (Group 3) using AH Plus or Epiphany sealer. The sealer thickness and sealer penetration into dentinal tubules was evaluated using stereomicroscopy and analysis of digital images using AutoCAD software at 5.0 mm, 3.0 mm, and 1.0 mm from the apex. The mean value of sealer thickness for Group 3 was significantly lower than the mean values of the other groups. There was no significant difference in the mean values between subgroups A and B for Group 1 or Group 3, whereas for Group 2, the mean value in subgroup A was significantly higher than the mean value in subgroup B. The greatest average frequency of the penetration of sealer cement was found at the 5.0 mm level, followed by the 3.0 mm level, which, in turn, was greater than at the 1.0 mm level. The thickness of the sealer cement is dependent on the obturation technique employed, while the penetration of the sealer into the dentinal tubules is independent of the obturation technique. PMID:22313823

  2. Use of Postoperative Palatal Obturator After Total Palatal Reconstruction With Radial Forearm Fasciocutaneous Free Flap.

    PubMed

    Jeong, Euicheol C; Jung, Young Ho; Shin, Jin-yong

    2015-07-01

    A 67-year-old-male patient visited our hospital for a mass on the soft palate of approximately 5.0 × 6.0  cm in size. He was diagnosed with adenoid cystic carcinoma and reconstruction after total palate resection was planned. After ablative surgery, a radial forearm free flap procedure was successfully performed to cover the hard and soft palates. However, wound disruption occurred twice during the postoperative period. When a palate defect is reconstructed using a soft tissue free flap, flap drooping by gravitation and the flap itself can generate irregularity in the lower contour of the palate and, in the long-term, insufficiencies of velopharyngeal function, speech, and mastication. To complement such functional and aesthetic problems caused by flap drooping, conventional prosthetics and new operative techniques have been discussed. However, overcoming wound disruption caused by flap drooping in the acute postoperative period has not been discussed. In this case, the temporary use of a palatal obturator during the postoperative period was beneficial after soft tissue reconstruction of the palate. PMID:26114541

  3. Sealing ability of three hydrophilic single-cone obturation systems: An in vitro glucose leakage study

    PubMed Central

    Hegde, Vibha; Arora, Shashank

    2015-01-01

    Aim: The aim of this study is to compare the corono-apical sealing ability of three single-cone obturation systems using a glucose leakage model. Materials and Methods: A total of 90 freshly extracted human maxillary single-rooted teeth was selected, and their crowns were cut. The root canal of each sample was instrumented using a rotary crown down technique and then divided into four experimental (n = 20 each) and two control groups (n = 5 each). Samples in the experimental groups were filled as follows: Group 1, cold lateral condensation using gutta-percha/AH Plus; group 2, single-cone C-points/smart-paste bio-sealer; group 3, single-cone bio-ceramic (BC) impregnated gutta-percha/endo-sequence BC sealer; group 4, single-cone Resilon/RealSeal SE after 7 days, the sealing ability of root canal fillings was tested at different time intervals using glucose leakage model. Glucose leakage values were measured using a spectrophotometer and statistically analyzed. Results: The four experimental groups presented significantly different glucose leakage values at all test periods (P < 0.05). At the end of the observation period, the cumulative glucose leakage values of groups 2 and 3 were significantly lower than those of groups 1 and 4 (P < 0.05). Conclusion: C-points/smart-paste Bio and BC impregnated gutta-percha/endo-sequence BC sealer combinations provided the superior sealing ability over the lateral condensation technique. PMID:25821383

  4. Root canal obturation: experimental study on the thermafil system related to different irrigation protocols

    PubMed Central

    Migliau, Guido; Sofan, Afrah Ali Abdullah; Sofan, Eshrak Ali Abdullah; Cosma, Salvatore; Eramo, Stefano; Gallottini, Livio

    2014-01-01

    Summary Aim The aim of this study was to stress the ability of a specific obturation technique (thermafil technique) to seal root canal system in presence or absence of smear layer. Methodology Sixteen monoradicular teeth, extracted for periodontal reasons, were collected for this study. All specimens were prepared with nickel-titanium rotary files, and then divided into two groups: for each group was applied a different kind of irrigation method, verifying the effectiveness in removing the smear layer, thus rendering the dentinal tubules more permeable for penetration of softened gutta-percha. Thermafil system was used to fill the root canals, and then all the specimens were observed under scanning electron microscope (SEM). Results The results showed that the Group which followed irrigation only with sodium hypochlorite exhibited significantly less gutta-percha tags when compared to the second Group, which was irrigated with sodium hypochlorite and EDTA. Conclusion The thermafil systems have a very good quality of compression and fluency that permit to gain a good seal of endodontic space; furthermore it allows the penetration of gutta-percha with the formation of numerous of gutta-percha tags inside the dentinal tubules above all when smear layer is reduced or eliminated. PMID:25506413

  5. Dermatitis caused by the tropical fowl mite Ornithonyssus bursa (Berlese) (Acari: Macronyssidae): a case report in humans.

    PubMed

    Mentz, Márcia Bohrer; Silva, Guilherme Liberato da; Silva, Carlos Eugênio

    2015-01-01

    We herein report human dermatitis caused by the tropical fowl mite Ornithonyssus bursa (Berlese). The cases occurred in an apartment in a residential district of Porto Alegre City, State of Rio Grande do Sul, Brazil, where three members of the same family presented with pruritic lesions on the arms and legs. On inspecting the bathroom, several mites measuring approximately 1.0mm in length were observed coming from a nest of Rufous Hornero, Furnarius rufus (Gmelin). This is the first report of O. bursa in the urban area of Porto Alegre City, from a nest of F. rufus that bites humans. PMID:26676510

  6. Efficacy of ProTaper Retreatment System in Root Canals Obturated with Gutta-Percha Using Two Different Sealers and GuttaFlow.

    PubMed

    Siotia, Jaya; Acharya, Shashi Rashmi; Gupta, Sunil Kumar

    2011-01-01

    Objective. To compare the efficacy of ProTaper retreatment files in removing three different obturating materials. Study Design. Forty-five human, single-rooted premolars were divided into three experimental groups. Group 1 was obturated with gutta-percha and AH Plus sealer, Group 2 was obturated with gutta-percha and zinc oxide eugenol sealer, and Group 3 was obturated with GuttaFlow. Retreatment was done using the ProTaper universal rotary retreatment files. Root halves were visualized using magnifying loops at 3X magnification and optical stereomicroscope at 10X magnification. Images were analyzed using AutoCAD 2004 software to calculate area of the remaining debris in the canal. For statistical analysis were used variance test and ANOVA. Results. Total debris/canal area ratio between the three groups showed a statistically significant difference (P < 0.001). Conclusion. ProTaper retreatment system did not produce completely clean canals in any of the groups. However, it had the best efficacy towards removing silicon based obturating material GuttaFlow. PMID:22114598

  7. Static vs stochastic optimization: A case study of FTSE Bursa Malaysia sectorial indices

    SciTech Connect

    Mamat, Nur Jumaadzan Zaleha; Jaaman, Saiful Hafizah; Ahmad, Rokiah Rozita

    2014-06-19

    Traditional portfolio optimization methods in the likes of Markowitz' mean-variance model and semi-variance model utilize static expected return and volatility risk from historical data to generate an optimal portfolio. The optimal portfolio may not truly be optimal in reality due to the fact that maximum and minimum values from the data may largely influence the expected return and volatility risk values. This paper considers distributions of assets' return and volatility risk to determine a more realistic optimized portfolio. For illustration purposes, the sectorial indices data in FTSE Bursa Malaysia is employed. The results show that stochastic optimization provides more stable information ratio.

  8. Static vs stochastic optimization: A case study of FTSE Bursa Malaysia sectorial indices

    NASA Astrophysics Data System (ADS)

    Mamat, Nur Jumaadzan Zaleha; Jaaman, Saiful Hafizah; Ahmad, Rokiah@Rozita

    2014-06-01

    Traditional portfolio optimization methods in the likes of Markowitz' mean-variance model and semi-variance model utilize static expected return and volatility risk from historical data to generate an optimal portfolio. The optimal portfolio may not truly be optimal in reality due to the fact that maximum and minimum values from the data may largely influence the expected return and volatility risk values. This paper considers distributions of assets' return and volatility risk to determine a more realistic optimized portfolio. For illustration purposes, the sectorial indices data in FTSE Bursa Malaysia is employed. The results show that stochastic optimization provides more stable information ratio.

  9. Fractional Ornstein-Uhlenbeck for index prices of FTSE Bursa Malaysia KLCI

    NASA Astrophysics Data System (ADS)

    Chen, Kho Chia; Bahar, Arifah; Ting, Chee-Ming

    2014-07-01

    This paper studies the Ornstein-Uhlenbeck model that incorporates long memory stochastic volatility which is known as fractional Ornstein-Uhlenbeck model. The determination of the existence of long range dependence of the index prices of FTSE Bursa Malaysia KLCI is measured by the Hurst exponent. The empirical distribution of unobserved volatility is estimated using the particle filtering method. The performance between fractional Ornstein -Uhlenbeck and standard Ornstein -Uhlenbeck process had been compared. The mean square errors of the fractional Ornstein-Uhlenbeck model indicated that the model describes index prices better than the standard Ornstein-Uhlenbeck process.

  10. Determination of aflatoxin M1 levels in cheese and milk consumed in Bursa, Turkey.

    PubMed

    Oruc, H H; Sonal, S

    2001-10-01

    Aflatoxin M1 (AFM1) was determined by ELISA in 57 cheese and 10 milk samples collected from supermarkets and street milkmen during August in Bursa Province, Turkey. The highest AFM1 concentration was 810.00 ng/kg in full fatty white cheese. The incidence of AFM1 in the cheese was higher (89.47%) than that of milk (10%). The AFM1 in 7/57 (12.28%) cheese samples exceeded the Turkish AFM1 tolerance limits of 250 ng/kg, but none of the milk samples exceeded the FAO/WHO, European Union and Turkish tolerance limit of 50 ng/L. PMID:11577937

  11. Proton pump inhibitor administration delays rebleeding after endoscopic gastric variceal obturation

    PubMed Central

    Jang, Won Seok; Shin, Hyun Phil; Lee, Joung Il; Joo, Kwang Ro; Cha, Jae Myung; Jeon, Jung Won; Lim, Jun Uk

    2014-01-01

    AIM: To clarify the efficacy of proton pump inhibitors (PPIs) after endoscopic variceal obturation (EVO) with N-butyl-2-cyanoacrylate. METHODS: A retrospective study was performed on 16 liver cirrhosis patients with gastric variceal bleeding that received EVO with injections of N-butyl-2-cyanoacrylate at a single center (Kyung Hee University Hospital at Gangdong) from January 2008 to December 2012. Medical records including patient characteristics and endoscopic findings were reviewed. Treatment results, liver function, serum biochemistry and cirrhosis etiology were compared between patients receiving PPIs and those that did not. Furthermore, the rebleeding interval was compared between patients that received PPI treatment after EVO and those who did not. RESULTS: The patient group included nine males and seven females with a mean age of 61.8 ± 11.7 years. Following the EVO procedure, eight of the 12 patients that received PPIs and three of the four non-PPI patients experienced rebleeding. There were no differences between the groups in serum biochemistry or patient characteristics. The rebleeding rate was not significantly different between the groups, however, patients receiving PPIs had a significantly longer rebleeding interval compared to non-PPI patients (22.2 ± 11.2 mo vs 8.5 ± 5.5 mo; P = 0.008). The duration of PPI use was not related to the rebleeding interval. A total of six patients, who had ulcers at the injection site, exhibited a shorter rebleeding interval (16.8 ± 5.9 mo) than patients without ulcers (19.9 ± 3.2 mo), though this difference was not statistically significant. CONCLUSION: PPI therapy can extend the rebleeding interval, and should therefore be considered after EVO treatment for gastric varices. PMID:25493026

  12. FP core carrier technique: thermoplasticized gutta-percha root canal obturation technique using polypropylene core.

    PubMed

    Kato, Hiroshi; Nakagawa, Kan-Ichi

    2010-01-01

    Core carrier techniques are unique among the various root canal filling techniques for delivering and compacting gutta-percha in the prepared root canal system. Thermafil (TF), considered the major core carrier device, is provided as an obturator consisting of a master core coated with thermoplasticized gutta-percha. We have devised a thermoplasticized gutta-percha filling technique using a polypropylene core, FlexPoint® NEO (FP), which was developed as a canal filling material that can be sterilized in an autoclave. Therefore, FP can be coated onto thermoplasticized gutta-percha and inserted into the prepared canal as a core carrier. The FP core carrier technique offers many advantages over the TF system: the core can be tested in the root canal and verified radiographically; the core can be adjusted to fit and surplus material easily removed; furthermore the core can be easily removed for retreatment. The clinical procedure of the FP core carrier technique is simple, and similar that with the TF system. Thermoplasticized gutta-percha in a syringe is heated in an oven and extruded onto the FP core carrier after a trial insertion. The FP core carrier is inserted into the root canal to the working length. Excess FP is then removed with a red-hot plastic instrument at the orifice of the root canal. The FP core carrier technique incorporates the clinical advantages of the existing TF system while minimizing the disadvantages. Hence the FP core carrier technique is very useful in clinical practice. This paper describes the FP core carrier technique as a new core based method. PMID:21139375

  13. Spatial Distribution of Polycyclic Aromatic Hydrocarbon (PAH) Concentrations in Soils from Bursa, Turkey.

    PubMed

    Karaca, Gizem

    2016-02-01

    The objectives of this study were to identify regional variations in soil polycyclic aromatic hydrocarbon (PAH) contamination in Bursa, Turkey, and to determine the distributions and sources of various PAH species and their possible sources. Surface soil samples were collected from 20 different locations. The PAH concentrations in soil samples were analyzed using gas chromatography-mass spectrometry (GC-MS). The total PAH concentrations (∑12 PAH) varied spatially between 8 and 4970 ng/g dry matter (DM). The highest concentrations were measured in soils taken from traffic+barbecue+ residential areas (4970 ng/g DM) and areas with cement (4382 ng/g DM) and iron-steel (4000 ng/g DM) factories. In addition, the amounts of ∑7 carcinogenic PAH ranged from 1 to 3684 ng/g DM, and between 5 and 74 % of the total PAHs consisted of such compounds. Overall, 4-ring PAH compounds (Fl, Pyr, BaA and Chr) were dominant in the soil samples, with 29-82 % of the ∑12 PAH consisting of 4-ring PAH compounds. The ∑12 BaPeq values ranged from 0.1 to 381.8 ng/g DM. Following an evaluation of the molecular diagnostic ratios, it was concluded that the PAH pollution in Bursa soil was related to pyrolytic sources; however, the impact of petrogenic sources should not be ignored. PMID:26658619

  14. [The investigation of malaria cases in Bursa between 2006-2008].

    PubMed

    Alver, Oktay; Atici, Efrail; Töre, Okan

    2009-01-01

    Malaria caused by Plasmodium parasites is one of the most common infectious diseases and an enormous public health problem. In this study, malaria cases detected and reported by the Malaria Control Dispensary of the Infectious Disease Division of Bursa Health Directory from October 2006 through December 2008 have been reported. The cases were evaluated according to age, gender, occupation and localization of the cases (indigenous or imported cases). A total of 23.416 blood smears were examined during this 26-month period and malaria parasite was found in 9 cases (0.038%). Of the 9 positive cases, 8 (88.9%) were male and 1 (11.1%) was female. Of these, 4 (44.5%) were acquired in Azarbajcan; 1 (1.1%) in Pakistan; 1 (1.1%) in Ghana; 1 (1.1%) in Sudan; 1 (1.1%) in an unknown Africa country; and 1 (1.1%) in the southeastern of Turkey. Except for three cases of foreign origin infected with Plasmodium falciparum, all the other cases were caused by Plasmodium vivax. The 0.05% decrease in malaria cases during the last 26-month, compared with prior data of malaria prevalence in Bursa, resulted primarily from a decrease in the number of cases acquired in Turkey. PMID:19598089

  15. Comparative evaluation of a novel smart-seal obturating system and its homogeneity of using cone beam computed tomography: In vitro simulated lateral canal study

    PubMed Central

    Arora, Shashank; Hegde, Vibha

    2014-01-01

    Aim: The aim was to evaluate and compare a novel polyamide polymer based obturating system and Gutta-percha and sealer in filling simulated lateral canals and their homogeneity when used for obturating the root canals. Materials and Methods: A total of 60 freshly extracted human single rooted teeth with fully formed apices were selected for this study. Teeth were de-coronated, and roots were standardized to a working length of 15 mm. Root canal preparation was carried out with rotary Protaper file system in all groups. The specimens were then randomly divided into three groups A, B, and C (n = 20). Ten samples from each group were decalcified and simulated lateral canals were made at 2, 4, and 6 mm from the root apex. Remaining ten samples from each group were maintained calcified. Group A was obturated with SmartSeal system (Prosmart-DRFP Ltd., Stamford, UK). Group B was obturated with sectional backfill method. Group C was obutrated with cold lateral compaction method (control). Decalcified samples from the respective groups were analyzed with digital radiography and photography and the measurement of the linear extension and area of lateral canal filling was done using UTHSCSA (UTHSCSA Image Tool for Windows version 3.0, San Antonio, TX, USA) software. Calcified samples were subjected to cone beam computed tomography image analysis sectioned axially. Results: Group A 92.46 ± 19.45 showed greatest extent of filling in lateral canals and denser homogeneity of oburation, followed by Group B 78.43 ± 26.45 and Group C 52.12 ± 36.67. Conclusions: Polyamide polymer obturation proved to have greater efficiency when compared with Gutta-percha system, when used for obturation with regards to adaptation of the sealer and penetration into the simulated lateral canals. PMID:25125851

  16. [IMPROVEMENT AND CHOICE OF COLOSTOMY METHOD IN THE TREATMENT OF PATIENTS, SUFFERING AN ACUTE OBTURATIVE IMPASSABILITY OF LARGE BOWEL].

    PubMed

    Kustryo, V I; Langazo, O V

    2015-11-01

    Colostomy was done in 49 patients, suffering an acute obturative impassability of large bowel (AOILB). In 28 patients (1st group) colostomy was conducted in accordance to standard method; in 21 (2nd group)--in accordance to the method, proposed by us. Application of the method proposed for surgical treatment of AOILB have guaranteed a reduction of postoperative paracolostomal complications rate in 6.8 times, of postoperative lethality--in 2.2 times, duration of the patient stationary treatment--in 1.4 times, the rate of dressings and the dressing material expanses--in 10 times. PMID:26939423

  17. [Joint and sensory branch block of the obturator and femoral nerves in a case of femoral head osteonecrosis and arthritis].

    PubMed

    Cortiñas-Sáenz, M; Salmerón-Velez, G; Holgado-Macho, I A

    2014-01-01

    The sensory innervation of the hip joint is complex. The joint and sensory branch block of the obturator and femoral nerves is effective for treating the pain caused due to different hip diseases. This could be an option to be considered in certain circumstances such as, being a surgical-anaesthetic high risk, or if there is significant overweight, It could also be useful on other occasions if the traumatoligist considers that it is better to delay hip replacement for a limited period. PMID:24656423

  18. An In Vitro Comparative Study of the Adaptation and Sealing Ability of Two Carrier-Based Root Canal Obturators

    PubMed Central

    Alkahtani, Ahmed; Al-Subait, Sara; Anil, Sukumaran

    2013-01-01

    The study was done to assess the sealing ability and adaptation of RealSeal 1, and to compare it with Thermafil. 65 single-rooted extracted teeth were selected and root canal treatment was performed. Root canals were obturated with RealSeal 1 or Thermafil. A double chamber bacterial leakage model using E. faecalis was developed to assess the sealing ability. Samples were monitored daily for 60 days. After the bacterial leakage test, samples were embedded in resin and sectioned horizontally at 2 and 4 mm from the apical foramen. Specimens were examined under scanning electron microscope and digitally photographed. AutoCAD software was used to measure the gap between the canal surface and obturation material. Results were statistically analyzed using nonparametric Kaplan-Meier survival analysis for the bacterial leakage and t-test to compare the means of gap in RealSeal 1 and Thermafil at 2 and 4 mm. There was no significant difference between the RealSeal 1 and Thermafil with respect to leakage over time. At 2 mm and 4 mm, RealSeal 1 had significantly more gaps than Thermafil. From the observations it can be concluded that RealSeal 1 and Thermafil have comparable performance in terms of adaptation and sealing ability. PMID:23710141

  19. An in vitro comparative study of the adaptation and sealing ability of two carrier-based root canal obturators.

    PubMed

    Alkahtani, Ahmed; Al-Subait, Sara; Anil, Sukumaran

    2013-01-01

    The study was done to assess the sealing ability and adaptation of RealSeal 1, and to compare it with Thermafil. 65 single-rooted extracted teeth were selected and root canal treatment was performed. Root canals were obturated with RealSeal 1 or Thermafil. A double chamber bacterial leakage model using E. faecalis was developed to assess the sealing ability. Samples were monitored daily for 60 days. After the bacterial leakage test, samples were embedded in resin and sectioned horizontally at 2 and 4 mm from the apical foramen. Specimens were examined under scanning electron microscope and digitally photographed. AutoCAD software was used to measure the gap between the canal surface and obturation material. Results were statistically analyzed using nonparametric Kaplan-Meier survival analysis for the bacterial leakage and t-test to compare the means of gap in RealSeal 1 and Thermafil at 2 and 4 mm. There was no significant difference between the RealSeal 1 and Thermafil with respect to leakage over time. At 2 mm and 4 mm, RealSeal 1 had significantly more gaps than Thermafil. From the observations it can be concluded that RealSeal 1 and Thermafil have comparable performance in terms of adaptation and sealing ability. PMID:23710141

  20. Fracture Resistance of Simulated Immature Teeth Obturated with Gutta-Percha or Resilon and Reinforced by Composite or Post

    PubMed Central

    Bolhari, Behnam; Mojazi Amiri, Elham; Kermanshah, Hamidreza; Ghabraei, Sholeh; Jamei, Azad

    2015-01-01

    Objectives: The purpose of this ex- vivo study was to evaluate the fracture resistance of simulated immature teeth, obturated with Gutta-percha or Resilon and reinforced by either composite resin or fiber post. Materials and Methods: Eighty-four human maxillary incisors were divided into seven groups (n=12). Teeth in all groups were prepared until Peeso #5 (1.5mm) could be passed through the apex. Root ends received 4mm of MTA plug as an apical barrier. Groups received the followings: 1.Gutta-percha, 2.Resilon, 3.Gutta-percha + composite resin, 4.Resilon + composite resin, 5.Gutta-percha + fiber post, 6.Resilon + fiber post and 7.No obturation (control group). Access openings were filled with composite resin. Specimens were then subjected to oblique load using Instron Testing Machine. The mean peak load at fracture was recorded and analyzed using ANOVA. Results: Experimental groups had a significantly more fracture resistance than the control group (P< 0.05). No significant difference was seen between experimental groups. Teeth reinforced by fiber post showed favorable fracture resistance. Conclusion: Treatment plans used in this study increase the fracture resistance of immature teeth. Use of fiber posts in immature teeth, may be the most favorable clinically applicable technique. PMID:26056522

  1. Retreatability of Root Canals Obturated Using Gutta-Percha with Bioceramic, MTA and Resin-Based Sealers

    PubMed Central

    Uzunoglu, Emel; Yilmaz, Zeliha; Sungur, Derya Deniz; Altundasar, Emre

    2015-01-01

    Introduction: The aim of this study was to evaluate the retreatability of root canals obturated with gutta-percha (GP) and three different endodontic sealers [iRoot SP (bioceramic sealer), MTA Fillapex (MTA-based sealer) and AH-26 (epoxy resin-based sealer)] using the ProTaper Universal Retreatment (PTR) system. Methods and Materials: Forty extracted single-rooted human teeth were prepared with universal ProTaper files up to F4 (40/0.06). Specimens were randomly divided into four groups according to obturation technique/material: single-cone GP/AH-26, lateral compaction of GP/AH-26, single-cone GP/iRoot SP, and single-cone GP/MTA Fillapex. Root fillings were removed with PTR. The time taken to reach the working-length (TWL) was recorded. Roots were longitudinally sectioned and each half was evaluated using a stereomicroscope. Three observers scored each third of all specimen. Obtained data were analyzed using the Kruskal-Wallis, Mann-Whitney U, Welch and Games-Howell tests. The level of significance was set at 0.05. Results: In single-cone GP/MTA Fillapex group the TWL was significantly shorter. The remnant of filling material in the apical and middle thirds of groups was similar and higher than the coronal thirds. Conclusion: None of the tested sealers were completely removed from the root canal system. PMID:25834591

  2. Effect of advanced irrigation protocols on self-expanding Smart-Seal obturation system: A scanning electron microscopic push-out bond strength study

    PubMed Central

    Hegde, Vibha; Arora, Shashank

    2015-01-01

    Introduction: The aim of this study was to evaluate the effect of different final irrigation activation techniques affect the bond strength of self-expanding Smart-Seal obturation at the different thirds of root canal space. Materials and Methods: One hundred single-rooted human teeth were prepared using the Pro-Taper system to size F3, and a final irrigation regimen using 3% sodium hypochlorite and 17% EDTA was performed. The specimens were randomly divided into five groups (n = 20) according to the final irrigation activation technique used as follows: No activation (control), manual dynamic activation (MDA), CanalBrush activation, ultrasonic activation (UA) and EndoActivator. Five specimens from each group were subjected to scanning electron microscopic observation for assessment of the smear layer removal after the final irrigation procedures. All remaining roots were then obturated with Smart-Seal obturation system. A push-out test was used to measure the bond strength between the root canal dentin and Smart-Seal paste. The data obtained from the push-out test were analyzed using two-way analysis of variance and Tukey post-hoc tests. Conclusions: It was observed that UA improved the bond strength of Smart-Seal obturation in the coronal and middle third and MDA/EndoActivator in the apical third of the root canal space. PMID:25684907

  3. A comparison of the effects of local analgesic solution in the navicular bursa of horses with lameness caused by solar toe or solar heel pain.

    PubMed

    Schumacher, J; Schumacher, J; de Graves, F; Schramme, M; Smith, R; Coker, M; Steiger, R

    2001-07-01

    We hypothesised that analgesia of the navicular bursa is not selective for the navicular apparatus; and that solar pain in some horses can be temporarily abolished or attenuated by analgesia of the navicular bursa. To test this hypothesis, we caused lameness in horses by inducing pain in the dorsal margin or the angles of the sole and then evaluated the ability of a local analgesic solution administered into the navicular bursa to attenuate lameness. The response of horses with solar pain in the dorsal or palmar aspect of the foot to 3.5 ml local analgesic solution administered into the navicular bursa was examined. Lameness was induced in 6 horses by creating solar pain in the dorsal aspect of one forefoot and, at another time, the palmar aspect of the other forefoot, with set-screws inserted into a custom-made shoe. Horses were videotaped trotting before and after application of set-screws and after administering 3.5 ml local analgesic solution into the navicular bursa. Lameness scores were assigned by examining videotaped gaits. Scores were significantly lower (P<0.05) for all horses with set-screws applied to the dorsal margin of the sole after administration of local analgesic solution into the navicular bursa. In conclusion, analgesia of the navicular bursa was less effective in desensitising the angles of the sole than in desensitising the dorsal margin of the sole. Pain arising from the sole should not be excluded as a cause of lameness when lameness is attenuated by analgesia of the navicular bursa. PMID:11469772

  4. Black-Scholes finite difference modeling in forecasting of call warrant prices in Bursa Malaysia

    NASA Astrophysics Data System (ADS)

    Mansor, Nur Jariah; Jaffar, Maheran Mohd

    2014-07-01

    Call warrant is a type of structured warrant in Bursa Malaysia. It gives the holder the right to buy the underlying share at a specified price within a limited period of time. The issuer of the structured warrants usually uses European style to exercise the call warrant on the maturity date. Warrant is very similar to an option. Usually, practitioners of the financial field use Black-Scholes model to value the option. The Black-Scholes equation is hard to solve analytically. Therefore the finite difference approach is applied to approximate the value of the call warrant prices. The central in time and central in space scheme is produced to approximate the value of the call warrant prices. It allows the warrant holder to forecast the value of the call warrant prices before the expiry date.

  5. Synovial Chondromatosis of the Subacromial Bursa Causing a Bursal-Sided Rotator Cuff Tear

    PubMed Central

    Neumann, Julie A.; Garrigues, Grant E.

    2015-01-01

    Synovial chondromatosis is an uncommon condition, and involvement of the shoulder is even more rare. We report on a 39-year-old female who presented with symptoms, radiographic features, and intraoperative findings consistent with multiple subacromial loose bodies resulting in a partial-thickness, bursal-sided rotator cuff tear of the supraspinatus muscle. She was treated with an arthroscopic removal of loose bodies, complete excision of the subacromial/subdeltoid bursa, acromioplasty, and rotator cuff repair. To our knowledge, this is the first report of arthroscopic treatment for a bursal-sided, partial-thickness rotator cuff tear treated with greater than two-year clinical and radiographic follow-up. We utilized shoulder scores, preoperative and postoperative range of motion, and imaging to assess the results of treatment and surveillance for recurrence in our patient after two-year follow-up. PMID:25861500

  6. Synovial chondromatosis of the subacromial bursa causing a bursal-sided rotator cuff tear.

    PubMed

    Neumann, Julie A; Garrigues, Grant E

    2015-01-01

    Synovial chondromatosis is an uncommon condition, and involvement of the shoulder is even more rare. We report on a 39-year-old female who presented with symptoms, radiographic features, and intraoperative findings consistent with multiple subacromial loose bodies resulting in a partial-thickness, bursal-sided rotator cuff tear of the supraspinatus muscle. She was treated with an arthroscopic removal of loose bodies, complete excision of the subacromial/subdeltoid bursa, acromioplasty, and rotator cuff repair. To our knowledge, this is the first report of arthroscopic treatment for a bursal-sided, partial-thickness rotator cuff tear treated with greater than two-year clinical and radiographic follow-up. We utilized shoulder scores, preoperative and postoperative range of motion, and imaging to assess the results of treatment and surveillance for recurrence in our patient after two-year follow-up. PMID:25861500

  7. Evaluation of Fracture Resistance of Endodontically Treated Teeth Filled with Gutta-Percha and Resilon Obturating Material: An In Vitro Study

    PubMed Central

    Khan, Sheeba; Inamdar, Mohammed Nasir K; Munaga, Swapna; Ali, Syed Akbar; Rawtiya, Manjusha; Ahmad, Ezaz

    2015-01-01

    Background: As per many studies endodontically treated teeth are widely considered to be more susceptible to fracture than vital teeth. Obturation strains and post placement have been a major cause of vertical root fracture. Present study was conducted to compare in vitro fracture resistance after filling with either Gutta-percha or Resilon by lateral condensation techniques in root canals. This study evaluated a new thermoplastic synthetic polymer based on polyester, which contains bioactive and radiopaque filler, Resilon performs every way as Gutta-percha except that it allows the bonding agent to attach to the resin core and the dentin wall thus forming a monoblock. Materials and Methods: In the present study 90 freshly extracted single-rooted human mandibular premolar teeth endodontically treated, were cut at the cemento-enamel junction, and were randomly divided into three groups of 30 each as teeth of Group A (Control) received no obturation, Group B teeth were obturated using Gutta-percha/AH26, and Group C teeth were obturated using Resilon/Epiphany obturating kit. Each specimen were mounted in acrylic in a polyvinyl ring and then tested for fracture resistance with the help of an universal testing machine. A compressive force was applied until the root is fractured. The data were subjected to analysis of variance for comparing mean difference of fracture resistance among three groups. Multiple comparisons among these groups were carried out by non-parametric Kruskal–Wallis analysis. A p value of <0.0001 was considered a statistically significant difference. Results: The results obtain after analysis showed no significant differences in the fracture resistance between the two tested groups of endodontic sealers. Conclusion: Within the limitation of the present in-vitro study, Resilon/Epiphany sealer performs better than Gutta-percha/AH 26 sealer with lateral condensation technique. PMID:26668476

  8. The effect of alterations in myc gene expression on B cell development in the bursa of Fabricius.

    PubMed

    Thompson, C B; Humphries, E H; Carlson, L M; Chen, C L; Neiman, P E

    1987-11-01

    Infection of 18-day embryonic bursal lymphocytes with a v-myc-containing retrovirus leads directly to a polyclonal proliferation of surface immunoglobulin-positive (slg+) cells in the bursa of Fabricius detected four weeks after hatching. These v-myc-expressing bursal cells repopulate the follicles of chemically ablated bursae more efficiently than total normal 18-day embryonic bursal cells. In contrast, comparable normal bursal cells lose the ability to repopulate follicles by four weeks. Bursal lymphocytes expressing either a retroviral v-myc or a c-myc gene deregulated by adjacent retroviral integration retain the ability of embryonic bursal lymphocytes to diversify their immunoglobulin light chain genes. These results suggest that retroviral deregulation of myc expression during avian B cell development induces outgrowth of a population of cells with the cardinal phenotypic characteristics of bursal stem cells. PMID:3499231

  9. Novel Pathways Revealed in Bursa of Fabricius Transcriptome in Response to Extraintestinal Pathogenic Escherichia coli (ExPEC) Infection

    PubMed Central

    Sun, Hongyan; Liu, Peng; Nolan, Lisa K.; Lamont, Susan J.

    2015-01-01

    Extraintestinal pathogenic Escherichia coli (ExPEC) has major negative impacts on human and animal health. Recent research suggests food-borne links between human and animal ExPEC diseases with particular concern for poultry contaminated with avian pathogenic E. coli (APEC), the avian ExPEC. APEC is also a very important animal pathogen, causing colibacillosis, one of the world’s most widespread bacterial diseases of poultry. Previous studies showed marked atrophy and lymphocytes depletion in the bursa during APEC infection. Thus, a more comprehensive understanding of the avian bursa response to APEC infection will facilitate genetic selection for disease resistance. Four-week-old commercial male broiler chickens were infected with APEC O1 or given saline as a control. Bursas were collected at 1 and 5 days post-infection (dpi). Based on lesion scores of liver, pericardium and air sacs, infected birds were classified as having mild or severe pathology, representing resistant and susceptible phenotypes, respectively. Twenty-two individual bursa RNA libraries were sequenced, each yielding an average of 27 million single-end, 100-bp reads. There were 2469 novel genes in the total of 16,603 detected. Large numbers of significantly differentially expressed (DE) genes were detected when comparing susceptible and resistant birds at 5 dpi, susceptible and non-infected birds at 5 dpi, and susceptible birds at 5 dpi and 1 dpi. The DE genes were associated with signal transduction, the immune response, cell growth and cell death pathways. These data provide considerable insight into potential mechanisms of resistance to ExPEC infection, thus paving the way to develop strategies for ExPEC prevention and treatment, as well as enhancing innate resistance by genetic selection in animals. PMID:26556806

  10. Novel Pathways Revealed in Bursa of Fabricius Transcriptome in Response to Extraintestinal Pathogenic Escherichia coli (ExPEC) Infection.

    PubMed

    Sun, Hongyan; Liu, Peng; Nolan, Lisa K; Lamont, Susan J

    2015-01-01

    Extraintestinal pathogenic Escherichia coli (ExPEC) has major negative impacts on human and animal health. Recent research suggests food-borne links between human and animal ExPEC diseases with particular concern for poultry contaminated with avian pathogenic E. coli (APEC), the avian ExPEC. APEC is also a very important animal pathogen, causing colibacillosis, one of the world's most widespread bacterial diseases of poultry. Previous studies showed marked atrophy and lymphocytes depletion in the bursa during APEC infection. Thus, a more comprehensive understanding of the avian bursa response to APEC infection will facilitate genetic selection for disease resistance. Four-week-old commercial male broiler chickens were infected with APEC O1 or given saline as a control. Bursas were collected at 1 and 5 days post-infection (dpi). Based on lesion scores of liver, pericardium and air sacs, infected birds were classified as having mild or severe pathology, representing resistant and susceptible phenotypes, respectively. Twenty-two individual bursa RNA libraries were sequenced, each yielding an average of 27 million single-end, 100-bp reads. There were 2469 novel genes in the total of 16,603 detected. Large numbers of significantly differentially expressed (DE) genes were detected when comparing susceptible and resistant birds at 5 dpi, susceptible and non-infected birds at 5 dpi, and susceptible birds at 5 dpi and 1 dpi. The DE genes were associated with signal transduction, the immune response, cell growth and cell death pathways. These data provide considerable insight into potential mechanisms of resistance to ExPEC infection, thus paving the way to develop strategies for ExPEC prevention and treatment, as well as enhancing innate resistance by genetic selection in animals. PMID:26556806

  11. Ipsilateral obturator type of hip dislocation with fracture shaft femur in a child: a case report and literature review.

    PubMed

    Arjun, R H H; Kumar, Vishal; Saibaba, Balaji; John, Rakesh; Guled, Uday; Aggarwal, Sameer

    2016-09-01

    The incidence of traumatic hip dislocations in children is rising in this fast developing world along with increasing numbers of high-velocity road traffic accidents. Anterior dislocation of the hip has a lower incidence compared with posterior dislocation of the hip. We encountered a rare case of the obturator type of anteriorly dislocated hip associated with ipsilateral fracture of the shaft femur in an 11-year-old child. This is a highly unusual injury combination and the mechanism of injury is obscure. Only two similar cases have been reported in the English literature to date. Closed reduction of the hip using a hitherto undescribed technique and an intramedullary interlocking nail was performed in this case. At 6 months of follow-up, the fracture shaft femur has united and the child is bearing full weight on the limb. PMID:27128394

  12. A comparison of three different root canal sealers when used to obturate a moisture-contaminated root canal system.

    PubMed

    Horning, T G; Kessler, J R

    1995-07-01

    Sealing ability of three classes of endodontic sealers, in moisture-contaminated canals, was evaluated. A total of 120 single-rooted extracted teeth were divided into three groups. The groups were obturated with either Procosol, Sealapex, or Ketac-Endo using saline as a moisture contaminant in all cases. Half (20 teeth) of each group was placed in a saline storage medium for 9 months. The remainder of the samples were placed in India ink, under a vacuum, cleared, and the amount of dye penetration measured under magnification. The stored samples were similarly treated after the 9-month storage period. In a moisture-contaminated canal, Procosol exhibited the least amount of apical leakage, followed by Sealapex, then Ketac-Endo. There was no significant difference in the amount of dye penetration after 9 months of storage over that found initially, which indicates that the deleterious effects of moisture contamination occur during the initial placement and setting reaction. PMID:7499974

  13. Evaluation of Apical Leakage in Root Canals Obturated with Three Different Sealers in Presence or Absence of Smear Layer

    PubMed Central

    Mokhtari, Hadi; Shahi, Shahriar; Janani, Maryam; Reyhani, Mohammad Frough; Mokhtari Zonouzi, Hamid Reza; Rahimi, Saeed; Sadr Kheradmand, Hamid Reza

    2015-01-01

    Introduction: Microleakage can result in failure of endodontic treatment. An important characteristic of endodontic sealer is sealing ability. The aim of this experimental study was to compare the apical leakage of teeth obturated with gutta-percha and three different sealers (resin- and zinc oxide eugenol-based) with/without smear layer (SL). Materials and Methods: In this study, 100 single-rooted teeth were used after cutting off their crowns. Cleaning and shaping was carried out with step-back technique and the samples were randomly divided into three groups (n=30) which were then divided into two subgroups (n=15) according to the presence/absence of SL. Two negative and positive control groups (n=5) were also prepared. In the various groups, the canals were obturated with gutta-percha and either of the test sealers (AH-26, Adseal or Endofill). The samples were submerged in India ink for 72 h. Then they were longitudinally sectioned and observed under a stereomicroscope at 20× magnification. Data were analyzed with descriptive statistical methods and one-way ANOVA. The significance level was set at 0.05. Results: The mean penetration length of dye in AH-26, Adseal and Endofill samples were 2.53, 2.76 and 3.03 mm, respectively. The differences between three groups were not significant (P>0.05); also, the mean dye penetration in AH-26, Adseal and Endofill samples in presence or absence of the SL was not significantly different. Conclusion: AH-26, Adseal and Endofill were similarly effective in prevention of apical microleakage. Differences in the mean dye penetration between the groups with/without the SL were not statistically significant. PMID:25834599

  14. Evaluation of Coronal Leakage Following Different Obturation Techniques and in-vitro Evalution Using Methylene Blue Dye Preparation

    PubMed Central

    Mathur, Rachit; Sharma, Medhavi; Sharma, Deepak; Raisingani, Deepak; Vishnoi, Suchita; Singhal, Deepika

    2015-01-01

    Introduction Coronal and apical leakage still remains one of the most important cause for endodontic failure in spite of the presence of advanced endodontic materials. The cause may attribute to different filling techniques, physical and chemical properties of sealers and presence or absence of smear layer assessment of coronal or apical leakage is used as a research method to compare the sealing ability of different techniques and endodontic materials. Aim To compare the coronal bacterial leakage using methylene blue in four different obturation techniques after protaper hand instrumentation. Materials and Methods Ninety extracted single-rooted teeth were instrumented to an apical preparation size F3 Protaper hand files. Twenty teeth were randomly obturated with lateral compaction, 20 with vertical compaction, 20 with combination of vertical and lateral compaction and 20 with Thermafil. Ten teeth were used for positive and negative controls (five teeth in each group). Teeth were kept in 100% humidity for 90 days, and then subjected coronally to Proteus vulgaris for 21 days to assess bacterial leakage. After bacterial challenge, methylene blue was placed coronally for another 21 days, and then scoring was done according to depth of dye leakage. Chi-square test was done for statistical analysis. Results Leakage as observed with combination of vertical and lateral compaction was significantly less than vertical compaction, lateral compaction and thermafil carriers during bacterial challenge. However, when dye was used it also showed statistically significant results with thermafil carriers showing the least leakage in comparison to vertical condensation, lateral condensation and combined groups. Conclusion The study concludes that two different methods i.e. bacterial and dye leakage revealed considerable variation on the same substrate Thus, due to the presence of variability among the results obtained by two different analytical methods used in the present study

  15. Influence of Pasteurella multocida and high and low environmental temperatures on adrenals and bursa of Fabricius in turkeys

    SciTech Connect

    Simensen, E.; Olson, L.D.; Hahn, G.L.

    1980-01-01

    The morphologic changes in the adrenals and bursa of Fabricius were evaluated from turkeys inoculated with Pasteurella multocida either in the palatine air spaces or via drinking water and maintained at high (33.4-37.4 C), low (2.6-5.3 C), and moderate (19.8-22.4 C) temperatures in temperature-controlled chambers. There was a slight hyperplasia of the adrenal cortical cells and a hypertrophy of the nuclei in the uninoculated turkeys maintained at both high and low temperatures, but these changes were more marked in turkeys maintained at low temperatures. Regardless of the temperature to which the turkeys were exposed, there was an increase in adrenal weight, hyperplasia of the cortical cells, hypertrophy of the nuclei of the cortical cells, and depletion of lipid in the cortical cells in the turkeys that became depressed after inoculation with P. multocida. In the uninoculated turkeys exposed to high temperatures there was a reduction in the weight of the bursa of Fabricius, atrophy of the follicles, and a reduction in the number of lymphocytes within the follicle, which did not occur in the bursae from uninoculated turkeys maintained at low temperatures. In the turkeys inoculated with P. multocida, there was a marked reduction in bursal weight, atrophy of the follicles, and reduction in the number of lymphocytes within the follicles.

  16. Fabricating a tooth- and implant-supported maxillary obturator for a patient after maxillectomy with computer-guided surgery and CAD/CAM technology: A clinical report.

    PubMed

    Noh, Kwantae; Pae, Ahran; Lee, Jung-Woo; Kwon, Yong-Dae

    2016-05-01

    An obturator prosthesis with insufficient retention and support may be improved with implant placement. However, implant surgery in patients after maxillary tumor resection can be complicated because of limited visibility and anatomic complexity. Therefore, computer-guided surgery can be advantageous even for experienced surgeons. In this clinical report, the use of computer-guided surgery is described for implant placement using a bone-supported surgical template for a patient with maxillary defects. The prosthetic procedure was facilitated and simplified by using computer-aided design/computer-aided manufacture (CAD/CAM) technology. Oral function and phonetics were restored using a tooth- and implant-supported obturator prosthesis. No clinical symptoms and no radiographic signs of significant bone loss around the implants were found at a 3-year follow-up. The treatment approach presented here can be a viable option for patients with insufficient remaining zygomatic bone after a hemimaxillectomy. PMID:26774316

  17. US guided corticosteroid injection into the subacromial-subdeltoid bursa: Technique and approach

    PubMed Central

    Molini, L.; Mariacher, S.; Bianchi, S.

    2012-01-01

    Local injection of cortisone derivatives, sometimes combined with local anesthetics, is frequently administered in rheumatology as the treatment of choice in para-articular diseases or as an adjuvant to systemic therapy in the treatment of arthritis. One of the most frequent local corticosteroid injections administered in daily clinical practice by rheumatologists, orthopedic surgeons, physiatrists, sports medicine doctors and general practitioners is injection into the subacromialsubdeltoid bursa in the treatment of bursitis and anterior superior impingement syndrome of the shoulder. Before local corticosteroid injection is administered, it is important to identify possible contraindications and to examine the documentation provided by the patient. Absolute contraindications or those related to the procedure should be evaluated by the prescribing physician but also the physician performing the corticosteroid injection should evaluate possible contraindications to make sure that corticosteroid injection is feasible. The present paper describes the ultrasound (US) guided local corticosteroid injection procedure with particular attention to the equipment required, the position of the patient and the examiner as well as the approach. The main advantage of US guidance during corticosteroid injection is the possibility to identify vascular structures, nerves and tendons situated in the needle path in order to avoid these structures and be sure to inject the drug into the appropriate location. When all rules are complied with and the corticosteroid injection is carried out by an experienced physician, it is virtually painless and is performed in just a few minutes. PMID:23396761

  18. Estimation of stochastic volatility with long memory for index prices of FTSE Bursa Malaysia KLCI

    SciTech Connect

    Chen, Kho Chia; Kane, Ibrahim Lawal; Rahman, Haliza Abd; Bahar, Arifah; Ting, Chee-Ming

    2015-02-03

    In recent years, modeling in long memory properties or fractionally integrated processes in stochastic volatility has been applied in the financial time series. A time series with structural breaks can generate a strong persistence in the autocorrelation function, which is an observed behaviour of a long memory process. This paper considers the structural break of data in order to determine true long memory time series data. Unlike usual short memory models for log volatility, the fractional Ornstein-Uhlenbeck process is neither a Markovian process nor can it be easily transformed into a Markovian process. This makes the likelihood evaluation and parameter estimation for the long memory stochastic volatility (LMSV) model challenging tasks. The drift and volatility parameters of the fractional Ornstein-Unlenbeck model are estimated separately using the least square estimator (lse) and quadratic generalized variations (qgv) method respectively. Finally, the empirical distribution of unobserved volatility is estimated using the particle filtering with sequential important sampling-resampling (SIR) method. The mean square error (MSE) between the estimated and empirical volatility indicates that the performance of the model towards the index prices of FTSE Bursa Malaysia KLCI is fairly well.

  19. Estimation of stochastic volatility with long memory for index prices of FTSE Bursa Malaysia KLCI

    NASA Astrophysics Data System (ADS)

    Chen, Kho Chia; Bahar, Arifah; Kane, Ibrahim Lawal; Ting, Chee-Ming; Rahman, Haliza Abd

    2015-02-01

    In recent years, modeling in long memory properties or fractionally integrated processes in stochastic volatility has been applied in the financial time series. A time series with structural breaks can generate a strong persistence in the autocorrelation function, which is an observed behaviour of a long memory process. This paper considers the structural break of data in order to determine true long memory time series data. Unlike usual short memory models for log volatility, the fractional Ornstein-Uhlenbeck process is neither a Markovian process nor can it be easily transformed into a Markovian process. This makes the likelihood evaluation and parameter estimation for the long memory stochastic volatility (LMSV) model challenging tasks. The drift and volatility parameters of the fractional Ornstein-Unlenbeck model are estimated separately using the least square estimator (lse) and quadratic generalized variations (qgv) method respectively. Finally, the empirical distribution of unobserved volatility is estimated using the particle filtering with sequential important sampling-resampling (SIR) method. The mean square error (MSE) between the estimated and empirical volatility indicates that the performance of the model towards the index prices of FTSE Bursa Malaysia KLCI is fairly well.

  20. Calcaneus, calcaneal tendon and retrocalcaneal bursa. Historical overview and plea for an accurate terminology.

    PubMed

    Kachlik, D; Musil, V; Vasko, S; Klaue, K; Stingl, J; Baca, V

    2010-01-01

    Diseases and injuries of several specific structures in the heel region have been an enduring focus of medicine: The anatomical terminology of many of these structures has not been established until recently. The aim of the study was a historical analysis of the advances of anatomical terminology of three selected morphological units in the heel region--the Achilles tendon, calcaneus and retrocalcaneal bursa. It starts with a critical evaluation of the mythological eposes, the Illiad and Odyssey, describing the exploits of heroes in the Trojan war, followed by a review of relevant terms used for the designation of selected heel structures in the Middle Ages as well as in the 18" and 19" centuries. Principal versions of Latin anatomical terms used for the denotation of the mentioned structures are discussed. Recently applicable Latin terms and their recommended English synonyms, according to the latest version of Terminologia Anatomica (1998) are summed up. It surveys examples of "not very appropriate" terms, which are frequently used in clinical literature. The authors consider the use of official anatomical terms (both Latin and English) as an important step for the improvement of the clinical expressions and formulations. PMID:20514849

  1. The Tail Exponent for Stock Returns in Bursa Malaysia for 2003-2008

    NASA Astrophysics Data System (ADS)

    Rusli, N. H.; Gopir, G.; Usang, M. D.

    2010-07-01

    A developed discipline of econophysics that has been introduced is exhibiting the application of mathematical tools that are usually applied to the physical models for the study of financial models. In this study, an analysis of the time series behavior of several blue chip and penny stock companies in Main Market of Bursa Malaysia has been performed. Generally, the basic quantity being used is the relative price changes or is called the stock price returns, contains daily-sampled data from the beginning of 2003 until the end of 2008, containing 1555 trading days recorded. The aim of this paper is to investigate the tail exponent in tails of the distribution for blue chip stocks and penny stocks financial returns in six years period. By using a standard regression method, it is found that the distribution performed double scaling on the log-log plot of the cumulative probability of the normalized returns. Thus we calculate α for a small scale return as well as large scale return. Based on the result obtained, it is found that the power-law behavior for the probability density functions of the stock price absolute returns P(z)˜z-α with values lying inside and outside the Lévy stable regime with values α>2. All the results were discussed in detail.

  2. Comparative evaluation of the sealing ability of different obturation systems used over apically separated rotary nickel-titanium files: An in vitro study

    PubMed Central

    Hegde, Jayshree; Bashetty, Kusum; Kumar, Krishna K; Chikkamallaiah, Champa

    2013-01-01

    Aim: The study was designed to investigate the sealing ability of two obturation systems (cold laterally compacted gutta percha and Obtura II) over different apically separated rotary nickel-titanium files (RACE and K3 system) using dye extraction method. Materials and Methods: Sixty-two mandibular premolars were divided into 2 groups of 30 teeth each, and 2 teeth served as negative controls. In Groups A and B, roots were prepared using RACE and K3 system, respectively, and were further subdivided into 4 subgroups. In subgroups A1, B1 and A2, B2 (n = 10 each), files were separated at 3 mm from the tip in apical 3rd of the canal. In subgroups A3, B3 and A4, B4 (n = 5), instruments were not separated. Subgroups A1, A3, B1, B3 and A2, A4, B2, B4 were obturated by lateral condensation method and Obtura II techniques, respectively. The sealing ability of the obturated specimens were tested using dye extraction method. The values for each group were recorded and analysis of variance (ANOVA), Student “t” test (two-tailed, independent), and Leven's test were performed. Results: Group A1 showed significantly less leakage than B1. No statistical significant difference between Groups A2 and B2 and Groups A3 and B3, respectively, were observed. Group A4 showed significantly less leakage than B4. Conclusion: Groups obturated with Obtura II showed less leakage than the lateral condensation technique irrespective of presence or absence of fractured NiTi rotary system. PMID:24082568

  3. Fabrication of a definitive obturator from a 3D cast with a chairside digital scanner for a patient with severe gag reflex: a clinical report.

    PubMed

    Londono, Jimmy; Abreu, Amara; Baker, Philip S; Furness, Alan R

    2015-11-01

    Patient gagging is a common problem during dental procedures such as maxillary impression making. This clinical report describes the use of a chairside intraoral scanner for a patient with a hypersensitive gag reflex. The technique proved to be a more comfortable alternative for the patient and an accurate method for the clinician to capture both hard and soft tissue detail for the fabrication of a definitive obturator. PMID:26182852

  4. Perineural Dexmedetomidine as an Adjuvant Reduces the Median Effective Concentration of Lidocaine for Obturator Nerve Blocking: A Double-Blinded Randomized Controlled Trial

    PubMed Central

    Lu, Yuechun; Sun, Jian; Zhuang, Xinqi; Lv, Guoyi; Li, Yize; Wang, Haiyun; Wang, Guolin

    2016-01-01

    Research suggests that the addition of dexmedetomidine to local anesthetics can prolong peripheral nerve blocks; however, it is not known whether dexmedetomidine can reduce the quantity of local anesthetic needed. We hypothesized that adding dexmedetomidine as an adjuvant to an obturator nerve block could reduce the median effective concentration of lidocaine. In this double-blinded randomized trial, 60 patients scheduled for elective transurethral resection of bladder tumors on the lateral wall were randomly divided into two groups: the control group (C group, n = 30) and the dexmedetomidine group (D group, n = 30). Two main branches of the obturator nerve (i.e., anterior and posterior) were identified using neural stimulation at the inguinal level, with only lidocaine used for the C group and 1 μg/kg dexmedetomidine combined with lidocaine used for the D group. The median effective concentration was determined by an up-and-down sequential trial. The ratio of two consecutive concentrations was 1.2. The median effective concentration (95% confidence interval) of lidocaine was 0.57% (0.54%-0.62%) in the C group and 0.29% (0.28%-0.38%) in the D group. The median effective concentration of lidocaine was significantly lower in the D group than in the C group (p < 0.05). These results indicate that dexmedetomidine (1 μg/kg) in combination with lidocaine for obturator nerve block decreases the median effective concentration of lidocaine. Trial Registration: ClinicalTrials.gov NCT02066727 PMID:27341450

  5. To evaluate the influence of smear layer with different instruments and obturation methods on microleakage of root canal filled teeth: In vitro study

    PubMed Central

    Likhitkar, Manoj S.; Kulkarni, Shantaram V.; Burande, Aravind; Solanke, Vishal; Kumar, C. Sushil; Kamble, Babasaheb

    2016-01-01

    Aims and Objectives: The success of root canal treatment depends on proper debridement, instrumentation, proper accessibility, and proper restoration. The presence of a smear layer is considered to be a significant factor. This in vitro study was conducted to assess the effect of the presence/absence of a smear layer on the microleakage of root canal filled teeth using different instruments and obturation methods. Materials and Methods: One hundred extracted mandibular premolars with closed apices and single roots were chosen and then divided into six groups, A to F, consisting of 15 teeth each. The control group included 10 teeth; 5 positive and 5 negative. The teeth were decoronated at the cementoenamel junction. Groups A, B, C, and D were instrumented with engine-driven rotary Protaper NiTi files. Groups E and F were instrumented with conventional stainless steel hand files. Groups A, C, and E were flushed with 3 ml of 17% EDTA to remove the smear layer prior to obturation. All teeth were flushed with 5.25% sodium hypochlorite solution and obturated with AH-Plus sealer with lateral condensation technique for Groups C, D, E, F and with thermoplasticized gutta-percha technique for Groups A and B. Using an electrochemical technique, leakages in the obturated canals were assessed for 45 days. The results were tabulated using Student's t-test (paired and unpaired t-test) with the Statistical Package for the Social Sciences Software Version 21 (IBM Company, New York, USA). Results: Group A showed the lowest mean value at intervals of 10, 20, 30, and 45 days. There was no current flow in the negative controls during the test period. There was leakage in the positive controls within a few minutes of immersion. Conclusion: The results showed that rotary instrumentation contributed toward an exceptional preparation of root canals compared to hand instrumentation. Elimination of the smear layer enhanced the resistance to microleakage; thermoplasticized gutta

  6. Floral visitation and reproductive traits of Stamenoid petals, a naturally occurring floral homeotic variant of Capsella bursa-pastoris (Brassicaceae).

    PubMed

    Ziermann, Janine; Ritz, Markus S; Hameister, Steffen; Abel, Christian; Hoffmann, Matthias H; Neuffer, Barbara; Theissen, Günter

    2009-11-01

    Homeotic changes played a considerable role during the evolution of flowers, but how floral homeotic mutants initially survive in nature has remained enigmatic. To better understand the evolutionary potential of floral homeotic mutants, we established as a model system Stamenoid petals (Spe), a natural variant of Capsella bursa-pastoris (Brassicaceae). In the flowers of Spe plants, petals are transformed into stamens, whereas all other floral organs are unaffected. In contrast with most other homeotic mutants, the Spe variant occurs in relatively stable populations in the wild. In order to determine how the profound change in floral architecture influences plant performance in the wild, we performed common garden experiments running over 3 years. Here, we show that Spe and wild-type plants attract the same assemblage of floral visitors: mainly hoverflies, wild bees and thrips. However, floral visitation is about twice as frequent in wild-type plants as in Spe plants. Nevertheless, the numbers of seeds per fruit were about the same in both variants. Wild-type plants produced more flowers, fruits and seeds per plant than Spe plants, whereas the germination capacity of Spe seeds was higher than that of the wild-type. Determination of volatile composition revealed monoterpenes and 3,4-dimethylbenzaldehyde, which were detected only in wild-type flowers, presumably because they are produced only by petals. Our data indicate that the similar fitness of Spe and wild-type C. bursa-pastoris in the field results from complex compensation between plant architecture and germination capacity. In contrast, flower structure and floral visitation are only of minor importance, possibly because C. bursa-pastoris is mainly self-pollinating. PMID:19784670

  7. Re-establishing apical patency after obturation with Gutta-percha and two novel calcium silicate-based sealers

    PubMed Central

    Agrafioti, Anastasia; Koursoumis, Anastasios D.; Kontakiotis, Evangelos G.

    2015-01-01

    Objective: Aim of the present study was to evaluate the retreatability and reestablishment of apical patency of two calcium silicate-based sealers, TotalFill BC Sealer (BCS) and mineral trioxide aggregate Fillapex (MTA F), versus AH Plus, when used in combination with Gutta-percha (GP). Materials and Methods: The canals of 54 single-rooted anterior teeth were instrumented and filled with GP/AH Plus (Group A), GP/MTA F (Group B), or GP/BCS (Group C) using continuous wave obturation technique. The groups were subdivided into subgroups with the master-GP cone placed to the working length (WL) or intentionally 2 mm short. The retreatment procedures were performed using ultrasonics, chloroform, rotary, and hand files. The ability to establish the patency and reach WL was determined as well as the time taken to reach WL was calculated in minutes. Furthermore, the samples were observed under a dental, optical microscope, after vertically splitting them. Results: The WL and patency were reestablished in 100% of specimens in all groups. The Mann–Whitney U-test indicated that there was a significant difference in the amount of time required to reach WL between the groups (P < 0.05) with group GP/BCS short of the WL showing the most amount of time to be retreated. Conclusion: The novel calcium silicate-based sealers are negotiable under simple root canal anatomy. However, the conventional retreatment techniques are not able to fully remove them. PMID:26929681

  8. Ore Mineralogy Features of Hayriye and Arapdede Mineralizations in (Inegol-Bursa) Area

    NASA Astrophysics Data System (ADS)

    Sendir, Hüseyin; Kocatürk, Hüseyin; Cesur, Duru; Toygar, Özlem

    2016-04-01

    Western Anatolia (Turkey) experienced widespread Cenozoic magmatism after the collision between the Sakarya and Anatolide-Tauride continental blocks in the pre-middle Eocene. The widespread magmatic activity in NW Anatolia postdates this continental collisional event in the region. The following magmatic episode during the Oligocene and Early Miocene is known to have produced the widespread granitic plutons. Many skarn mineralization associated with plutons formed in the region (such as Hayriye and Arapdede Mineralizations). The Paleozoic aged Devlez Metabasite is the oldest unit of the study area. This unit includes amphibolite, glaucophane-lawsonite schist, muscovite schists. The unit has widely spread in area. This units are overlain unconformably by the Geyiktepe Marbles. Paleocene aged Domaniç granitoidic intrusives cut other rock series and located as a batholite. Magmatic units present porphyric and holocrystalline textures. Granitoidic intrusions are represented by tonalite, tonalite porphyr, granodiorite, granodiorite porphyr, granite, diorite, diorite porphyries. The Domaniç granitoid intruded in to the metamorphides during Paleocene and caused formations of skarn zones and related Cu-Pb-Zn mineralizations along the contacts. Mineralizations are known in the locations named as Arapdede and Hayriye. The mineralizations occur along the metamorphites - plutonics contact, in the pockets and fractures extending towards marble. The thickness of the mineralized bodies can reach up to 1 -2 m. Primary minerals are galenite, magnetite, pyrite, chalcopyrite and sphalerite at Hayriye mineralizations and sphalerite, galenite, chalcopyrite and pyrite minerals at the Arapdede mineralizations. This study supported by ESOGU BAP (201115031) Keywords: Ore mineralogy, mineralization, Cu-Pb-Zn deposits, Inegöl (Bursa).

  9. Experimental evidence for the ectodermal origin of the epithelial anlage of the chicken bursa of Fabricius.

    PubMed

    Nagy, Nándor; Oláh, Imre

    2010-09-01

    The bursa of Fabricius (BF) is a central lymphoid organ of birds responsible for B-cell maturation within bursal follicles of epithelial origin. Despite the fundamental importance of the BF to the birth of B lymphocytes in the immune system, the embryological origin of the epithelial component of the BF remains unknown. The BF arises in the tail bud, caudal to the cloaca and in close association with the cloacal membrane, where the anal invagination (anal sinus) of ectoderm and the caudal endodermal wall of the cloaca are juxtaposed. Serial semi-thin sections of the tail bud show that the anal sinus gradually transforms into the bursal duct and proctodeum, which joins the distal part of the cloaca during late embryogenesis. These anatomical findings raise the possibility that the ectoderm may contribute to the epithelial anlage of the BF. The expression of sonic hedgehog and its receptor in the embryonic gut, but not in the BF, further supports an ectodermal origin for the bursal rudiment. Using chick-quail chimeras, quail tail bud ectoderm was homotopically transplanted into ectoderm-ablated chick, resulting in quail-derived bursal follicle formation. Chimeric bursal anlagen were generated in vitro by recombining chick bursal mesenchyme with quail ectoderm or endoderm and grafting the recombination into the chick coelomic cavity. After hematopoietic cell colonization, bursal follicles formed only in grafts containing BF mesenchyme and tail bud ectoderm. These results strongly support the central role of the ectoderm in the development of the bursal epithelium and hence in the maturation of B lymphocytes. PMID:20702559

  10. A mathematical model of mucilage expansion in myxospermous seeds of Capsella bursa-pastoris (shepherd's purse)

    PubMed Central

    Deng, Wenni; Jeng, Dong-Sheng; Toorop, Peter E.; Squire, Geoffrey R.; Iannetta, Pietro P. M.

    2012-01-01

    Background and Aims Myxospermy is a term which describes the ability of a seed to produce mucilage upon hydration. The mucilage is mainly comprised of plant cell-wall polysaccharides which are deposited during development of those cells that comprise the seed coat (testa). Myxospermy is more prevalent among those plant species adapted to surviving on arid sandy soils, though its significance in determining the ecological fitness of plants is unclear. In this study, the first mathematical model of myxospermous seed mucilage expansion is presented based on seeds of the model plant species Capsella bursa-pastoris (shepherd's purse). Methods The structures underpinning the expansion process were described using light, electron and time-lapse confocal micrographs. The data and experimental observations were used to create a mathematical model of myxospermous seed mucilage expansion based on diffusion equations. Key Results The mucilage expansion was rapid, taking 5 s, during which the cell mucilage volume increased 75-fold. At the level of the seed, this represented a 6-fold increase in seed volume and a 2·5-fold increase in seed surface area. These increases were shown to be a function of water uptake (16 g water g−1 mucilage dry weight), and relaxation of the polymers which comprised the mucilage. In addition, the osmotic pressure of the seed mucilage, estimated by assessing the mucilage expansion of seeds hydrated in solutions of varying osmotic pressure, was –0·54 MPa (equivalent to 0·11 m or 6·6 g L−1 NaCl). Conclusions The results showed that the mucilage may be characterized as hydrogel and seed-mucilage expansion may be modelled using the diffusion equation described. The potential of myxospermous seeds to affect the ecological services provided by soil is discussed briefly. PMID:22112439

  11. Geophysical/Geotechnical Applications to Urban Transformation: Example of District of Yildirim of Bursa City

    NASA Astrophysics Data System (ADS)

    Karabulut, Savas; Imre, Nazire; Yeziz, Hatice; Caglak, Faruk; Tezel, Okan; Ozcep, Ferhat

    2013-04-01

    The city of Bursa, which is located near to the North Anatolian Fault Zone has a very active tectonic regime. The city has a local site effect problem, which is the subject of many studies for this region due to take place in the middle of the basin of the city center. However, in line with the law of new urban transformation, Turkey has started renovation of damaged old buildings and sub-urban buildings. The first example of study has been conducted in Bursa City Center in the district of Yıldırım and that has covered a big area. We used Turkish/Eurocode-8 Standard and Microzonation Criteria for all of this study. The study area covered 7 sub-district areas in particular the southern part of the conservancy district of the plains and northern part of the Uludag slope. We carried out geophysical (microtremors, seismic refraction method, surface wave analysis methods (MASW-MAM) and vertical electrical sounding) and geotechnical (boring up to 20 m and laboratory testing) studies at 75 sites to estimate elastical parameters, soil group, soil classification, and geological cross-sections. The study area was divided into two sub-areas as slope rubble (in the southern part) and alluvial deposits by using borehole data. Standard penetration tests were applied for each 1.5 m to all the boreholes and to estimate mechanical and index properties of soils, several laboratory test were applied to soil/rock specimens. Several soil problems such as soil bearing capacity, soil liquefaction potential, soil settlement analysis, soil amplification, soil expansion analysis were solved by using the results of geophysical, geotechnical and laboratory data. For the study area, deterministic and probabilistic earthquake hazard analysis was performed and ground motion level (magnitude and accelaration of design earthquake) was estimated as Mw:7.4 and a: 0.41 g for exceedence rate of 30% in 50 years. These values guided the solution of soil dynamic analysis. Vs30 map of soils for the

  12. An in vitro comparison of bond strengths of Gutta-percha/AH Plus, Resilon/Epiphany self-etch and EndoREZ obturation system to intraradicular dentin using a push-out test design

    PubMed Central

    Patil, Sanjana A; Dodwad, Preeti K; Patil, Avinash A

    2013-01-01

    Aim: To evaluate and compare the push-out bond strengths of three obturation materials; Gutta-percha/AH Plus, Resilon/Epiphany self-etch (SE) and EndoREZ obturation system to intraradicular dentin. Materials and Methods: Sixty single-canal anterior teeth were prepared and assigned to experimental groups (n = 20), designated as Group I: Gutta-percha/AH Plus, Group II: Resilon/Epiphany SE and Group III: EndoREZ sealer/EndoREZ points. After obturation, each tooth was prepared for push-out assessment with root slices of 2 mm thickness using universal testing machine. Statistical Analysis: Two way analysis of variance and Scheffe's test. Results: Gutta-percha/AH Plus root fillings showed significantly highest bond strength. Also, root segment location did not have a significant influence on bond strength. Conclusion: The adhesiveness quality to root dentin promoted by newer methacrylate resin-based obturation systems like Resilon/Epihany SE and EndoREZ is compromised even when teeth with simple anatomic features were obturated under well-monitored laboratory conditions. PMID:23833458

  13. Comparative analysis of viral RNA and apoptotic cells in bursae following infection with infectious bursal disease virus.

    PubMed

    Kong, Lih L; Omar, Abdul R; Hair-Bejo, M; Aini, I; Seow, Heng F

    2004-11-01

    Specific-pathogen-free (SPF) chickens infected with very virulent (vv) infectious bursal disease virus (IBDV) UPM94/273 developed lower pathogenicity compared to UPM97/61. Sequence analysis indicated that UPM94/273 is an exceptional vvIBDV. In this study, a SYBR Green I based real-time reverse transcriptase reaction assay was developed to measure viral RNA in the bursae of SPF chickens infected with IBDV. Specificity of the amplified products was confirmed by melting temperature analysis. A linear relationship was observed between the amount of input viral RNA and the threshold values for IBDV-specific product over five log10 dilutions. The viral RNA level following infection with UPM94/273 was significantly higher at day 1 and 2 post-inoculation (p.i.) compared to UPM97/61 infected chickens. However, chickens infected with UPM97/61 had significantly higher numbers of bursal cells undergoing apoptosis compared to UPM94/273 infected chickens. In both groups, the number of apoptotic cells and viral RNA levels peak at day 3 p.i. This study indicates that UPM97/61 and UPM94/273 have different efficiency of replication and percentage of apoptotic cells in bursae during the acute phase of IBDV infection. PMID:15325516

  14. Toxic effect of NiCl2 on development of the bursa of Fabricius in broiler chickens

    PubMed Central

    Yin, Shuang; Cui, Hengmin; Peng, Xi; Fang, Jing; Zuo, Zhicai; Deng, Junliang; Wang, Xun; Wu, Bangyuan; Guo, Hongrui

    2016-01-01

    This study was conducted with objective of evaluating the toxic effects of nickel chloride (NiCl2) on development of bursa of Fabricius in broilers fed on diets supplemented with 0, 300, 600 and 900 mg/kg of NiCl2 for 42 days by using the methods of experimental pathology, flow cytometry (FCM), and quantitative real-time polymerase chain reaction (qRT-PCR). The results showed that dietary NiCl2 in 300 mg/kg and over induced toxic suppression in the bursal development, which was characterized by decreasing lymphocytes histopathologically and relative weight, increasing G0/G1 phase (a prolonged nondividing state), reducing S phase (DNA replication) and proliferating index, and increasing percentages of apoptotic cells. Concurrently, the mRNA expression levels of bax, cytochrome c (cyt c), apoptotic peptidase activating factor 1 (Apaf-1), caspase-3, caspase-6, caspase-7 and caspase-9 were increased and the bcl-2 mRNA expression levels were decreased. The toxic suppression of bursal development finally impaired humoral immunity duo to the reduction of B lymphocyte population and B lymphocyte activity in the broiler chicken. This study provides new evidences for further studying the effect mechanism of Ni and Ni compoundson B-cell or bursa of Fabricius. PMID:26683707

  15. A Study on Evaluation of the Biology Projects Submitted to the TUBITAK Secondary Education Research Projects Contest from the Bursa Region

    ERIC Educational Resources Information Center

    Zeren Özer, Dilek; Güngör, Sema Nur; Özkan, Muhlis

    2015-01-01

    This study evaluates, through the employment of scientific methods and techniques, a total of 107 Biology projects submitted by secondary education students to the Bursa Region Coordinatorship of TUBITAK (a region which encompasses the municipalities of Afyonkarahisar, Balikesir, Bilecik, Canakkale, Eskisehir, Kutahya, and Yalova). The projects…

  16. [A severe cutaneous anthrax case complicated with sepsis in Bursa, Turkey].

    PubMed

    Durmuş, Gül; Yeşilyurt, Murat; Karagöz, Alper; Demir, Canan; Eren, Nilüfer; Kılıç, Selçuk

    2013-07-01

    Anthrax is a zoonotic infection caused by Bacillus anthracis. Although the incidence of disease has been decreasing in Turkey, it is still endemic in some regions of the country. The cutaneous form of disease is the most common clinical form, usually benign and rarely causes bacteriemia and sepsis. In this report, a case of cutaneous anthrax complicated with sepsis where B.anthracis was isolated from blood and wound cultures, was presented. A 53-years-old male living in Bursa province (northwestern Turkey), admitted to the emergency ward with high fever and a lesion on the right arm. His history indicated that he is dealing with livestock breeding and injured his arm during slaughtering of a sick lamb. The infection started as a black colored painless ulcer with 2 cm in diameter on his right elbow. The case was hospitalized and penicillin G therapy was started with the preliminary diagnosis of anthrax. Bullous lesions occurred around the wound, got necrosis and integrated with the first lesion. Gram stained slides from the bullous lesions revealed capsulated gram-positive bacilli under light microscope. Gram-positive bacilli were also isolated from bullous lesions and the blood cultures. The isolates were identified and confirmed as B.anthracis by conventional and molecular methods. Antibiotic susceptibility tests were performed by E-test method and the isolates were found to be susceptible to ampicillin, tetracyclin, tigecyclin, ciprofloxacin, levofloxacin, gentamycin, chloramphenicol, erythromycin, clarithromycin, vancomycin, linezolid, daptomycin and rifampicin. The lesion became surrounded by an extensive erythema and edema and expanded to the whole arm. Moxifloxacin was initiated due to the fact that clinical progress. During the second week of the therapy, a black colored scar was observed on the wound while hyperemia and edema regressed. The necrotic tissue debridated to accelerate healing and rest of the skin defect was planned for reconstruction. The

  17. Retrieval of Green's Functions from Ambient Noise Measurements in the Adana and Bursa Basins of Turkey

    NASA Astrophysics Data System (ADS)

    Bakirci, Taciser; Kaslilar, Ayse; Kocaoglu, Argun

    2014-05-01

    Records of ambient seismic noise (ASN) field are widely used to obtain seismic velocity structures at both engineering and global scales. Two well-known methods commonly employed to obtain shear-wave velocity profiles, in engineering seismology, are the frequency-wavenumber (FK) transform and spatial auto-correlation (SPAC) methods that are based on the analysis of ASN field recorded by 2D sensor arrays. At global scale on the other hand, seismic velocity structure is determined by the Green's function retrieved from cross-correlation of the ASN recorded between two seismic stations. In the last decade, this approach has become complementary or almost alternative to the conventional methods of surface wave tomography used to investigate the velocity structure of the crust and upper mantle. Similarly, in recent years, the Green's functions estimated from ASN have also been used to investigate the shear-wave velocity structure of basins and their site amplification properties. This work presents the Rayleigh wave Green's functions retrieved from the vertical-component ASN data recorded in the Bursa and Adana basins of Turkey. This constitutes the first stage of our research whose objective is to investigate whether velocity structures of these basins can reliably be obtained from tomographic inversion. The continuous data used in our study were recorded between 2010 and 2013 by the national seismic networks operated by Kandilli Observatory and Earthquake Research Institute (KOERI) of Bosphorus University and Earthquake Research Department (ERD) of Disaster and Emergency Management Presidency of Turkey. For both basins, distances between station pairs are in the range of 30-200 km. In this distance range, the Green's functions reveal Rayleigh waves with the periods of 6 to 30 s. Group velocity dispersion analysis carried out by the multiple filtering technique show that the group velocities are estimated to be in the range of 2.5-4.0 km/s. Observed variation of group

  18. A simplified post preparation technique after Thermafil obturation: evaluation of apical microleakage and presence of voids using methylene blue dye penetration

    PubMed Central

    Pusinanti, Luca; Rubini, Riccardo; Pellati, Agnese; Zerman, Nicoletta

    2013-01-01

    Summary Aim To evaluate the apical microleakage of Thermafil obturations after three different post space preparation techniques. Materials and methods 33 root canals of mono-radiculated extracted teeth were prepared with M two and then obturated with Thermafil. Teeth so treated were then divided into three groups and the post space to middle root was prepared using three different techniques. In samples in group A the housing for the post was created using a Torpan bur, and the carrier was partially removed only in the coronal portion. In samples in group B the carrier was completely removed and gutta-percha was hand compacted, before canal preparation using a Torpan bur. In samples in group C the carrier was completely removed, without guttapercha compaction, before canal preparation using a Torpan bur. The roots were immersed for 72 hours in methylene blue dye solution and sectioned transversely at 1-3-5 mm from the apex for evaluation of dye penetration using a stereomicroscope. The data collected were processed using Win CAD software and subjected to statistical analysis using the Student t test for p<0.05. Results There were no significant differences between the three groups, except for the presence of voids in the intermediate section of teeth in groups B and C. Conclusions Post space preparation did not influence the apical seal, and gutta-percha without voids was always found in the last millimetre of the canal obturation. This study proposes a post preparation technique which provides for complete carrier removal using pliers, hand compaction of residual gutta-percha with a manual plugger and enlargement of the root canal, using appropriate post space burs, free of any interference from the carrier. Operating time is reduced, as is the risk of creating ledges or iatrogenic perforations. PMID:23991269

  19. Isolation and immunomodulatory activity of bursal peptide, a novel bursal peptide from the chicken bursa of Fabricius

    PubMed Central

    Liu, Xiao-Dong; Qian, Yingjuan

    2015-01-01

    The bursa of Fabricius (BF), which is unique to birds, serves as the central humoral immune organ and plays a significant role in B lymphocyte differentiation. In this study, a new bursal peptide (BP-IV) was isolated from BF, which promoted colony-forming unit pre-B formation and regulated B cell differentiation. BP-IV also exerted immunomodulatory effects on antigen-specific immune responses via both humoral and cellular immunity in chicken and mice that had been immunized with inactivated avian influenza virus (AIV; H9N2 subtype), including enhancing AIV-specific antibody and cytokine production. The results of this study provided novel insights into the use of a potential candidate reagent for B cell development and future immuno-pharmacological use. PMID:26119163

  20. Concurrent Fowlpox and Candidiasis Diseases in Backyard Chickens with Unusual Pox Lesions in the Bursa of Fabricius.

    PubMed

    Ogasawara, Fusae; Yamamoto, Yu; Sato, Yasuo; Fukunari, Kazuhiro; Murata, Ken-Ichi; Yaegashi, Gakuji; Goto, Makiko; Murakami, Ryukoh

    2016-09-01

    Concurrent fowlpox and candidiasis diseases occurred in a backyard chicken flock. Four deceased chickens (one Nagoya breed and three white silkie chickens) were examined for diagnosis. At necropsy, white curd-like plaques were observed in the crop. Fungal elements that stained positive for Candida albicans with immunohistochemistry were distributed throughout the tongue, choanal mucosa, esophagus, and crop. Typical fowlpox lesions, composed of proliferating epithelial cells with ballooning degeneration and viral intracytoplasmic inclusions, were observed in the conjunctiva, nasal mucosa, and skin around the cloaca. Interestingly, hyperplastic interfollicular epithelium with rare virus inclusions was observed in the bursa of Fabricius (BF). Some bursal follicles were replaced by proliferating epithelial cells. These proliferating cells immunohistochemically stained positive for cytokeratin. PCR and subsequent genetic sequencing detected the C. albicans gene in the crop, and fowlpox virus genes in the BF. These results indicate that this outbreak was a rare presentation of fowlpox in spontaneously infected chickens, with unusual pox lesions in the BF. PMID:27610735

  1. Gracilaria bursa-pastoris (Gmelin) Silva extract attenuates ultraviolet B radiation-induced oxidative stress in human keratinocytes.

    PubMed

    Piao, M J; Kim, K C; Zheng, J; Yao, C W; Cha, J W; Kang, H K; Yoo, E S; Koh, Y S; Ko, M H; Lee, N H; Hyun, Jin Won

    2014-01-01

    The purpose of this study was to assess the protective effects of an ethanol extract derived from the red alga Gracilaria bursa-pastoris (Gmelin) Silva (GBE) on ultraviolet B (UVB)-irradiated human HaCaT keratinocytes. GBE exhibited scavenging activity against intracellular reactive oxygen species that were induced by either hydrogen peroxide or UVB radiation. In addition, both the superoxide anion and the hydroxyl radical were scavenged by GBE in cell-free systems. GBE absorbed light in the UVB range (280-320 nm) of the electromagnetic spectrum and lessened the extent of UVB-induced oxidative damage to cellular lipids, proteins, and DNA. Finally, GBE-treated keratinocytes showed a reduction in UVB-induced apoptosis, as exemplified by fewer apoptotic bodies. These results suggest that GBE exerts cytoprotective actions against UVB-stimulated oxidative stress by scavenging ROS and absorbing UVB rays, thereby attenuating injury to cellular constituents and preventing cell death. PMID:24579808

  2. Severely scarred oronasal cleft defects in edentulous adults: initial data on the long-term outcome of telescoped obturator prostheses supported by zygomatic implants.

    PubMed

    Landes, Constantin A; Ghanaati, Sharam; Ballon, Alexander; Thai, Van Dung; Reinhard, René; Nolte, Dieter; Piwowarczyk, Andree; Wagner, Mathias; Sader, Robert

    2013-07-01

    Objective : Prosthetic rehabilitation of edentulous patients presenting with severely scarred oronasal cleft defects. To document the outcome of telescopic obturator prostheses attached to zygomatic implants in edentulous cleft lip and palate patients. Patients and Methods : Four edentulous patients suffering from the consequences of cleft lip and palate were selected from a cohort of 52 patients who had received zygomatic implants between 1998 and 2010. Oronasal communication had persisted and severe scars and chronic infection were noted in the cleft region. Bone grafting procedures were contraindicated due to high risk for dehiscence. For the functional support of telescopic prostheses, nine zygomatic implants and two standard dental implants had been placed. Results : The zygomatic implants and the telescopic prostheses survived an average of 62 months (37 to 99 months) and were successful. Patients' satisfaction and oral function improved (on visual analog scale and oral health impact profile). Conclusions : Telescopic obturator dentures supported by zygomatic implants represent a feasible option for the prosthetic rehabilitation of cleft lip and palate patients with severe impairments of the edentulous ridges including atrophy, scar tissue, ridge defects, oronasal communication, and chronic infection in the cleft region. PMID:23611444

  3. Effect of selenium supplementation on aflatoxin B₁-induced histopathological lesions and apoptosis in bursa of Fabricius in broilers.

    PubMed

    Chen, Kejie; Fang, Jing; Peng, Xi; Cui, Hengmin; Chen, Jin; Wang, Fengyuan; Chen, Zhengli; Zuo, Zhicai; Deng, Junliang; Lai, Weimin; Zhou, Yi

    2014-12-01

    To investigate the effects of sodium selenite against aflatoxin B1 (AFB 1), 200 male Avian broilers, divided into five groups, were fed with basal diet (control group), 0.3 mg/kg AFB1 (AFB1 group), 0.3 mg/kg AFB1 + 0.2 mg/kg Se (+Se group I), 0.3 mg/kg AFB1 + 0.4 mg/kg Se (+Se group II) and 0.3 mg/kg AFB1 + 0.6 mg/kg Se (+Se group III), respectively. Compared with the control group, decreased relative weight of bursa of Fabricius and contents of serum immunoglobulin, more vacuoles and debris in the bursal lymphoid follicle, and increased percentage of apoptotic bursal cells were observed in the AFB1 group. Sodium selenite, however, could increase the relative weight of bursa of Fabricius and contents of serum immunoglobulin, and ameliorate histopathological lesions. The percentages of apoptotic bursal cells, through flow cytometry and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling method, in the three +Se groups were lower than those in the AFB 1 group. Compared with the AFB 1 group, moreover, the mRNA expressions of Bax and Caspase-3 by qRT-PCR in the three +Se groups were decreased, while the expression of Bcl-2 was increased. The results indicate that sodium selenite in diet can protect chicken from AFB 1-induced impairment of humoral immune function by reducing bursal histopathological lesions and percentages of apoptotic bursal cells. PMID:25261862

  4. In Vitro Evaluation of Apical Sealing Ability of HEROfill® Obturator Versus Cold Lateral Condensation in Curved Root Canals

    PubMed Central

    Zarei, Mina; Javidi, Maryam; Kazemi, Zeinab

    2015-01-01

    Objectives: This study aimed to assess and compare the apical sealing ability of HEROfill® Soft-Core system and lateral condensation technique in fine curved canals using the fluid filtration method. Materials and Methods: Forty human mesiobuccal root canals of mandibular first molars with 25° to 40° curvatures were instrumented to an apical size 30/0.04. Roots were randomly assigned to two experimental groups of 15, designated as groups A and B. Two control groups, each containing five teeth, served as positive and negative controls. Group A was obturated using lateral condensation technique and group B with the HEROfill® Soft-Core system. The groups were tested for microleakage using an in vitro fluid filtration apparatus with 0.5 atm pressure at zero, two, four, six, eight and 10 minutes. Independent t-test was used to analyze the microleakage data. Results: The mean and standard deviation (SD) values for fluid microleakage in the lateral condensation group were 0.58±0.49 μL/min, 0.68±0.35 μL/min, 0.74±0.22 μL/min, 0.71±0.29 μL/min and 0.60± 0.29 μL/min at two, four, six, eight and 10 minutes, respectively. The mean and SD values for fluid microleakage in the HEROfill® group were 0.53±0.42 μL/min, 0.67±0.34 μL/min, 0.69±0.26 μL/min, 0.73±0.33 μL/min and 0.63±0.26 μL/min at two, four, six, eight and 10 minutes, respectively. The difference between the lateral condensation and HEROfill® groups was not statistically significant at two (P=0.776), four (P=0.909), six (P=0.562), eight (P=0.861) or 10 (P=0.765) minutes. Conclusion: The HEROfill® system and cold lateral condensation technique were equally effective for apical sealing of curved canals. PMID:27123020

  5. The reliability of a novel magnetic resonance imaging-based tool for the evaluation of forefoot bursae in patients with rheumatoid arthritis: the FFB score

    PubMed Central

    King, Leonard; Thomas, Matthew; Roemer, Frank; Culliford, David; Bowen, Catherine J.; Arden, Nigel K.; Edwards, Christopher J.

    2014-01-01

    Objective. The aim of this study was to determine the reliability of an MRI-based score that evaluates forefoot bursae (FFBs) in patients with RA. Methods. Items for inclusion, grading criteria and MRI sequences were determined iteratively. The score was evaluated in 30 patients with established RA. Reader agreement was evaluated using the percentage of exact/close agreement, Bland–Altman plots, kappa and intraclass correlation coefficient analyses. Results. The FFB score assesses nine forefoot regions and contains four items: presence, shape, enhancement and magnetic resonance characteristics. The FFB score showed moderate to good intra- and interreader agreement (κ range = 0.5–0.9 and 0.47–0.87, respectively). Conclusion. The FFB score is adequately reliable in the evaluation of bursa-like lesions of the forefoot in patients with RA. PMID:24907157

  6. Methicillin-resistant Staphylococcus aureus infection of the subacromial bursa: an unusual complication following subacromial corticosteroid injection (a report of two cases)

    PubMed Central

    Jones, Sian A; Gurunaidu, Subramaniam; Pritchard, Mark G

    2014-01-01

    Subacromial corticosteroid injections are frequently used for both diagnostic and therapeutic purposes in shoulder pain. Subacromial septic bursitis is a recognized but rare complication. There have been no reports of methicillin-resistant Staphylococcus aureus infections of the subacromial bursa after subacromial injections in the literature. We describe case reports of two patients who presented with subacromial methicillin-resistant Staphylococcus aureus septic bursitis following subacromial corticosteroid injections in the community and highlight the diagnostic and management challenges of this condition.

  7. SALINE ARTHROGRAPHY OF THE DISTAL INTERPHALANGEAL JOINT FOR LOW-FIELD MAGNETIC RESONANCE IMAGING OF THE EQUINE PODOTROCHLEAR BURSA: FEASIBILITY STUDY.

    PubMed

    McGill, Shannon L; Gutierrez-Nibeyro, Santiago D; Schaeffer, David J; Hartman, Susan K; O'Brien, Robert T; Joslyn, Stephen K

    2015-01-01

    Abnormalities of the deep digital flexor tendon, navicular bone, and collateral sesamoidean ligament can be difficult to visualize using magnetic resonance imaging (MRI) if bursal fluid is absent. The use of saline podotrochlear bursography improves podotrochlear apparatus evaluation, however, the technique has disadvantages. The objective of this prospective feasibility study was to describe saline arthrography of the distal interphalangeal joint as an alternative technique for improving MRI visualization of the deep digital flexor tendon, navicular bone, collateral sesamoidean ligament, and podotrochlear bursa, and to compare this technique with saline podotrochlear bursography. Eight paired cadaver forelimbs were sampled. Saline podotrochlear bursography or saline arthrography techniques were randomly assigned to one limb, with the alternate technique performed on the contralateral limb. For precontrast and postcontrast studies using each technique, independent observers scored visualization of the dorsal aspect of the deep digital flexor tendon, palmar aspect of the navicular bone, collateral sesamoidean ligament, and podotrochlear bursa. Both contrast techniques improved visualization of structures over precontrast MR images and visualization scores for both techniques were similar. Findings from this study demonstrated that saline arthrography is feasible and comparable to saline podotrochlear bursography for producing podotrochlear bursa distension and separation of the structures of the podotrochlear apparatus on nonweight bearing limbs evaluated with low-field MRI. Clinical evaluation of saline arthrography on live animals is needed to determine if this technique is safe and effective as an alternative to saline podotrochlear bursography in horses with suspected pathology of the podotrochlear apparatus. PMID:25857430

  8. The B-cell development independent of the bursa of Fabricius but dependent upon the thymus in chickens treated with testosterone propionate.

    PubMed Central

    Hirota, Y; Suzuki, T; Bito, Y

    1980-01-01

    Spleen cells taken from chickens treated with testosterone propionate, surgically bursectomized and immunized, were treated with anti-bursa-cell antiserum in the presence of complement, and transferred together with the mixed antigens into immunodeficient chickens. The recipient chickens showed restored capacity for antibody response to sheep red blood cells. In contrast, adoptive immune responses by spleen cells from normal chickens were abolished by treating with anti-bursa-cell antiserum in the presence of complement. These findings indicate that antibody-forming cells in TP-treated chickens do not bear cell-surface antigens specific for bursa cells; Testosterone-treated chickens were thymectomized at 7 days of age and immunized with the mixed antigens; the chickens thus treated were not able to produce antibodies. Thymocytes and thymus-derived cells taken from normal chickens were transferred into the testosterone-treated and surgically thymectomized chickens; but the antibody responses were not restored, indicating that absence of antibody formation in testosterone-treated, thymectomized birds is not due to lack of T cells as such. This result was confirmed by using adoptive transfer of B cells taken from testosterone-treated chickens together with T cells. PMID:6966603

  9. A Rare Case of Perforated Descending Colon Cancer Complicated with a Fistula and Abscess of Left Iliopsoas and Ipsilateral Obturator Muscle

    PubMed Central

    Cacurri, Alban; Trastulli, Stefano; Desiderio, Jacopo; Pressi, Eleonora; Giovannelli, Giorgio; Parisi, Amilcare

    2014-01-01

    Perforation of descending colon cancer combined with iliopsoas abscess and fistula formation is a rare condition and has been reported few times. A 67-year-old man came to our first aid for an acute pain in the left iliac fossa, in the flank, and in the ipsilateral thigh. Ultrasonography and computed tomography revealed a left abdominal wall, retroperitoneal, and iliopsoas abscess that also involved the ipsilateral obturator muscle. It proceeded with an exploratory laparotomy that showed a tumor of the descending colon adhered and perforated in the retroperitoneum with abscess of the iliopsoas muscle on the left-hand side, with presence of a fistula and liver metastases. A left hemicolectomy with drainage of the broad abscess was performed. Pathologic report findings determined adenocarcinoma of the resected colon. PMID:24744948

  10. Effect of Different Obturation Materials on Residual Antimicrobial Activity of 2% Chlorhexidine in Dentin at Different Time Intervals: An Ex Vivo Study

    PubMed Central

    Bolhari, Behnam; Dehghan, Somayyeh; Sharifian, Mohammad Reza; Bahador, Abbas

    2015-01-01

    Objectives: The aim of this study was to evaluate the effect of gutta percha/AH26 and Resilon/RealSeal SE on residual antimicrobial activity of chlorhexidine (CHX) in human root dentin and suggest the best filling material when CHX is used as final irrigant. Materials and Methods: One-hundred and forty-four single-rooted human teeth were selected for this study. Canals were instrumented to the apical size #35. Smear layer was removed using 5.25% NaOCl and 17% EDTA and then 108 teeth were irrigated with 2% CHX and randomly divided into three groups of gutta percha/AH26, Resilon/RealSeal SE and positive controls. Each group was divided into three subgroups for different time intervals (one, three and six weeks). Thirty-six teeth, as negative controls, were irrigated with saline and obturated with gutta percha/AH26 and Resilon/RealSeal SE. Dentin powder was prepared at the afore-mentioned intervals. After exposure to Enterococcus faecalis for 24 hours, colony forming units (CFUs) were counted and residual antimicrobial activity was calculated. The data were analyzed using the Kruskal Wallis test and one-way ANOVA. The significance level was set at P<0.05. Results: The antimicrobial activity of CHX gradually decreased in a time-dependent manner but it maintained over 95% of its antimicrobial activity after six weeks. Moreover, Resilon/RealSeal SE significantly decreased the antimicrobial activity of CHX in comparison with gutta-percha/AH26 (P<0.05). Conclusion: After a final irrigation with CHX, gutta-percha/AH26 is a better choice for root canal obturation. PMID:27252755

  11. Infected and apoptotic cells in the IBDV-infected bursa of Fabricius, studied by double-labelling techniques.

    PubMed

    Nieper, H; Teifke, J P; Jungmann, A; Lohr, C V; Muller, H

    1999-06-01

    Infections of young chickens with infectious bursal disease virus (IBDV) result in depletion of lymphoid cells of the bursa of Fabricius (BF) due to necrosis and apoptotic processes. Interactions between IBDV and lymphoid cells were investigated by labelling paraffin-embedded tissue sections of infected BF with combinations of either immunohistochemistry (IHC), in situ hybridization (ISH) or in situ TUNEL reaction (IST). With regard to specificity and sensitivity, results of ISH were comparable to those of IHC. By double-labelling it was shown, for the first time, that viral antigen was present in most of the apoptotic cells. This suggests that IBDV may be directly involved in the induction of the apoptotic process. However, some cells also showed either viral antigen or DNA fragmentation, especially at the early stages of infection. It should be taken into account, therefore, that the apoptotic processes might also be induced by IBDV through indirect interaction between cells. Remarkably, in some of the infected lymphoid cells ISH signals were observed in the nucleolus. PMID:26915384

  12. Effect of Diclazuril on the Bursa of Fabricius Morphology and SIgA Expression in Chickens Infected with Eimeria tenella

    PubMed Central

    Zhou, Bian-hua; Liu, Li-li; Liu, Jeffrey; Yuan, Fu-wei; Tian, Er-jie; Wang, Hong-wei

    2015-01-01

    The effects of diclazuril on the bursa of Fabricius (BF) structure and secretory IgA (SIgA) expression in chickens infected with Eimeria tenella were examined. The morphology of the BF was observed by hematoxylin and eosin staining, while ultrastructural changes were monitored by transmission electron microscopy. E. tenella infection caused the BF cell volumes to decrease, irregularly arranged, as well as, enlargement of the intercellular space. Diclazuril treatment alleviated the physical signs of damages associated with E. tenella infection. The SIgA expression in BF was analyzed by immunohistochemistry technique. The SIgA expression increased significantly by 350.4% (P<0.01) after E. tenella infection compared to the normal control group. With the treatment of diclazuril, the SIgA was relatively fewer in the cortex, and the expression level was significantly decreased by 46.7% (P<0.01) compared with the infected and untreated group. In conclusion, E. tenella infection in chickens induced obvious harmful changes in BF morphological structure and stimulated the expression of SIgA in the BF. Diclazuril treatment effectively alleviated the morphological changes. This result demonstrates a method to develop an immunological strategy in coccidiosis control. PMID:26797433

  13. Effect of Diclazuril on the Bursa of Fabricius Morphology and SIgA Expression in Chickens Infected with Eimeria tenella.

    PubMed

    Zhou, Bian-Hua; Liu, Li-Li; Liu, Jeffrey; Yuan, Fu-Wei; Tian, Er-Jie; Wang, Hong-Wei

    2015-12-01

    The effects of diclazuril on the bursa of Fabricius (BF) structure and secretory IgA (SIgA) expression in chickens infected with Eimeria tenella were examined. The morphology of the BF was observed by hematoxylin and eosin staining, while ultrastructural changes were monitored by transmission electron microscopy. E. tenella infection caused the BF cell volumes to decrease, irregularly arranged, as well as, enlargement of the intercellular space. Diclazuril treatment alleviated the physical signs of damages associated with E. tenella infection. The SIgA expression in BF was analyzed by immunohistochemistry technique. The SIgA expression increased significantly by 350.4% (P<0.01) after E. tenella infection compared to the normal control group. With the treatment of diclazuril, the SIgA was relatively fewer in the cortex, and the expression level was significantly decreased by 46.7% (P<0.01) compared with the infected and untreated group. In conclusion, E. tenella infection in chickens induced obvious harmful changes in BF morphological structure and stimulated the expression of SIgA in the BF. Diclazuril treatment effectively alleviated the morphological changes. This result demonstrates a method to develop an immunological strategy in coccidiosis control. PMID:26797433

  14. Effects of analgesia of the distal interphalangeal joint and navicular bursa on experimental lameness caused by solar pain in horses.

    PubMed

    Sardari, K; Kazemi, H; Mohri, M

    2002-11-01

    It has been hypothesized that pain originating from the dorsal margin of the sole of the hoof in horses can be attenuated by analgesia of either the distal interphalangeal (DIP) joint, or of the navicular bursa (NB). To test this hypothesis, an experimental lameness was induced in the toe region of the left forelimb in six adult horses. After this, both synovial structures were blocked and the effects on the lameness were semi-quantitatively scored. Lameness was induced by creating pressure on the dorsal margin of the sole with the help of set-screws that were screwed into a nut, welded to the inside of each branch of the shoe. Gaits were recorded on a videotape before and after application of the screws, and after application of either a local anaesthetic or saline into the DIP joint or NB. The gaits were independently evaluated by two blinded clinicians and scored. Lameness scores were high after application of the screws and remained high after the administration of saline, but decreased significantly (P < 0.05) after administration of the local anaesthetic. Analgesia of the DIP joint as well as the NB appeared to be able to desensitize a portion of the sole. It was concluded that pain arising from the toe region of the sole should not be excluded as a cause of lameness when lameness is attenuated by analgesia of the DIP joint, or of the NB. PMID:12489872

  15. [Ocurrence of Ornithonyssus bursa (Berlese, 1888) (Acari: Macronyssidae) on Megascops choliba (tropical screech-owl) and Pitangus sulphuratus (great kiskadee) nestlings in the Rio Grande do Sul State, Brazil].

    PubMed

    Mascarenhas, Carolina S; Coimbra, Marco A A; Müller, Gertrud; Brum, João Guilherme W

    2009-01-01

    The Center for Rehabilitation of Wildlife and Center for Selection of Wild Animal of the Federal University of Pelotas has attended two nestlings of Megascops choliba (tropical screech-owl) (Strigiformes - Strigidae) and two of Pitangus sulphuratus (great kiskadee) (Passeriformes - Tyrannidae) heavily parasitized by mites, in May 2005 and December 2006, respectively. The nestlings and the nest of P. sulphuratus were collected in the Pelotas urban area after severe storms. The mites were removed, clarified in lactofenol, permanently mounted in Hoyer's medium and identified as Ornithonyssus bursa (Acari - Macronyssidae). Megascops choliba and Pitangus sulphuratus are reported as host of Ornithonyssus bursa in Rio Grande do Sul State, Brazil. PMID:20040213

  16. In-vitro evaluation of the effect of canal curvature on adaptation of gutta-percha in canals obturated with HEROfill system by CBCT.

    PubMed

    Zarei, Mina; Talati, Ali; Mortazavi, Mohammad; Zarch, Hosein Hoseini; Javidi, Maryam; Bidokhty, Hamid Abbaszadeh

    2011-03-01

    A hermetic seal of the root canal space following canal preparation is important in endodontics. This study evaluated the effect of canal curve on adaptation of gutta-percha to dentinal walls of canals obturated using the Herofill system. For this in vitro study, 80 mesial roots of mature human first molars with length of 16 mm, curve between 5° and 45°, and no caries or resorption of the root surface were selected. A cone beam computed tomography system was used to evaluate the presence or absence of a gap in the samples. Photographs were taken in three sections: 2 mm above the curve, at the curve and 2 mm below the curve. The gap area was identified using Photoshop and AutoCAD software. Kruskal Wallis and Mann-Whitney tests were used to analyze the data mounted in a castcurve. There were significant differences between the two lateral condensation groups with various curves; roots with more curve had more gaps. When the Herofill and lateral condensation groups were compared without considering the sections and curve, there was a significant difference between these groups and the Herofill group had less gaps. The Herofill system is an alternative to the lateral condensation technique in severely curved canals. PMID:21467814

  17. An in vitro comparative evaluation of different intraorifice barriers on the fracture resistance of endodontically treated roots obturated with gutta-percha

    PubMed Central

    Gupta, Abhishek; Arora, Vipin; Jha, Padmanabh; Nikhil, Vineeta; Bansal, Parul

    2016-01-01

    Aim: To compare and evaluate the root reinforcement potential of four different intraorifice barriers: Mineral trioxide aggregate (MTA), resin-modified glass ionomer cement (RMGIC), fiber-reinforced composite (FRC), and nanohybrid composite (NC). Materials and Methods: Seventy-five mandibular premolars were decoronated to a standardized length, and prepared and obturated with gutta-percha and AH Plus sealer. Except for control specimens, the coronal 3-mm gutta-percha was removed and filled with different materials. The specimens (75) were divided into five groups (n = 15) on the basis of the intraorifice barrier material used. Group 1: MTA, Group 2: RMGIC, Group 3: FRC, Group 4: NC, Group 5: no barrier (control). Fracture resistance of the specimens was tested. Results: Fracture resistance of roots was significantly affected by the type of intraorifice barrier used and the following pattern was observed: RMGIC > FRC > NC > MTA. Conclusion: Intraorifice barriers can be regarded as a viable choice to reduce the occurrence of postendodontic root fractures. Among the four tested materials, RMGIC showed the maximum reinforcement. PMID:27099413

  18. Ultrastructural study on the plical epithelium of the bursa of Fabricius in chick embryos: influence of partial decerebration and hypophyseal allografts.

    PubMed Central

    Romano, N; Baldassini, M R; Abelli, L; Aita, M; Mastrolia, L

    1996-01-01

    The bursa of Fabricius of 18 day normal and partially decerebrated chick embryos, and partially decerebrated embryos bearing a hypophyseal allograft was analysed by scanning and transmission electron microscopy, focusing on the ultrastructural characterisation of the plical epithelium. The plicae of the normal bursa consist of interfollicular (IFE) and follicle associated epithelium (FAE). The FAE is composed of typical polygonal cells and is supported by a layer of epithelial cells which appears as a continuation of the corticomedullary epithelium. Bordering cells lie between the FAE and IFE. The IFE is composed of 4 cell types: (1) undifferentiated, (2) goblet, at various stages of maturity, (3) prismatic, and (4) globular light cells. Partially decerebrated embryos showed a gross impairment of plical epithelium development and the complex of FAE and IFE cells was largely undifferentiated. Partially decerebrated embryos with a hypophyseal allograft displayed the same cellular types as observed in controls, thus indicating a restored differentiation of plical epithelium. These findings suggest that the hypophysis affects the differentiation of plical epithelium during ontogenesis. Images Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Figs 8-11 Fig. 12 Fig. 13 Fig. 14 Fig. 15 Fig. 16 Fig. 17 Fig. 18 PMID:8655413

  19. The secondary prophylactic efficacy of beta-blocker after endoscopic gastric variceal obturation for first acute episode of gastric variceal bleeding

    PubMed Central

    Choi, Moon Han; Kim, Sang Gyune; Lee, Yun Nah; Seo, Yu Ri; Kim, Min Jin; Lee, Sae Hwan; Jeong, Soung Won; Jang, Jae Young; Kim, Hong Soo; Kim, Boo Sung

    2013-01-01

    Background/Aims The most appropriate treatment for acute gastric variceal bleeding (GVB) is currently endoscopic gastric variceal obturation (GVO) using Histoacryl®. However, the secondary prophylactic efficacy of beta-blocker (BB) after GVO for the first acute episode of GVB has not yet been established. The secondary prophylactic efficacy of BB after GVO for the first acute episode of GVB was evaluated in this study. Methods Ninety-three patients at Soonchunhyang University Hospital with acute GVB who received GVO using Histoacryl® were enrolled between June 2001 and March 2010. Among these, 42 patients underwent GVO alone (GVO group) and 51 patients underwent GVO with adjuvant BB therapy (GVO+BB group). This study was intended for patients in whom a desired heart rate was reached. The rates of rebleeding-free survival and overall survival were calculated for the two study groups using Kaplan-Meyer analysis and Cox's proportional-hazards model. Results The follow-up period after the initial eradication of gastric varices was 18.14±25.22 months (mean±SD). During the follow-up period, rebleeding occurred in 10 (23.8%) and 21 (41.2%) GVO and GVO+BB patients, respectively, and 39 patients died [23 (54.8%) in the GVO group and 16 (31.4%) in the GVO+BB group]. The mean rebleeding-free survival time did not differ significantly between the GVO and GVO+BB groups (65.40 and 37.40 months, respectively; P=0.774), whereas the mean overall survival time did differ (52.54 and 72.65 months, respectively; P=0.036). Conclusions Adjuvant BB therapy after GVO using Histoacryl® for the first acute episode of GVB could decrease the mortality rate relative to GVO alone. However, adjuvant BB therapy afforded no benefit for the secondary prevention of rebleeding in GV. PMID:24133666

  20. LIPOMA ARBORESCENS: RARE CASE OF ROTATOR CUFF TEAR ASSOCIATED WITH THE PRESENCE OF LIPOMA ARBORESCENS IN THE SUBACROMIAL-SUBDELTOID AND GLENOHUMERAL BURSA

    PubMed Central

    Benegas, Eduardo; Neto, Arnaldo Amado Ferreiro; Teodoro, Daniel Sabatini; da Silva, Marcos Vinícius Muriano; de Oliveira, Augusto Medaglia; Filippi, Renée Zon; de Santis Prada, Flávia

    2015-01-01

    Lipoma arborescens is a rare intra-articular disease that is usually monoarticular and is characterized by extensive proliferation of the synovial villi and hyperplasia of the subsynovial fat. The synovial tissue is progressively replaced by mature fat cells in the synovial membrane. The present study reports a case of a rare condition of lipoma arborescens that was simultaneously intra-articular (glenohumeral joint) and in the subacromial-subdeltoid bursa, in association with a torn supraspinatus tendon. The clinical, histological and radiographic presentations and treatment are discussed here. The description of this case includes radiographic and magnetic resonance evaluations and pathological examination. Although lipoma arborescens is a rare condition, it should be taken into consideration in cases presenting synovial hyperproliferation and synovial fat replacement. PMID:27047861

  1. Antibacterial activity of Tribulus terrestris and its synergistic effect with Capsella bursa-pastoris and Glycyrrhiza glabra against oral pathogens: an in-vitro study

    PubMed Central

    Soleimanpour, Saman; Sedighinia, Fereshteh Sadat; Safipour Afshar, Akbar; Zarif, Reza; Ghazvini, Kiarash

    2015-01-01

    Objective: In this study, antimicrobial activities of an ethanol extract of Tribulus terrestris aloneand in combination with Capsella bursa-pastoris and Glycyrrhiza glabra were examined in vitro against six pathogens namely Streptococcus mutans, Streptococcus sanguis, Actinomyces viscosus, Enterococcus faecalis Staphylococcus aureus, and Escherichia coli. Materials and methods: Antibacterial activities of the extracts were examined using disc and well diffusion methods and the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of ethanol extracts were determined against these microorganisms using agar and broth dilution methods. Chlorhexidine was used as positive control. Results: Tribulus terrestris extract exhibited good antibacterial activity against all bacteria. Antibacterial activity of mixed extract was evaluated and exhibited that mixed extract was more effective against all bacteria than any of the cases alone which indicates the synergistic effect between these three extracts (p˂0.05). No strain showed resistance against these extracts. In agar dilution, Tribulus terrestris exhibited MIC values ranging from 35.0 to 20.0 mg/ml and mixed extract showed MIC values ranging from 12.5 to 5.0 mg/ml. The results of broth dilution method were consistent with the findings of the agar dilution method. Conclusion: This in-vitro study was a preliminary evaluation of antibacterial activity of the plants. It provided scientific evidence to support uses of T. terrestris and its mixture with C. bursa-pastoris and G. glabra for the treatment of oral infections. In-vivo studies are also required to better evaluate the effect of these extracts. PMID:26101754

  2. Behavior of chars from Bursa Mustafa Kemal Pasa Alpagut and Balkesir Dursunbey Cakiirca Lignite (Turkey) during non-catalytic and catalytic gasification

    SciTech Connect

    Bozkurt, Y.; Misirlioglu, Z.; Sinag, A.; Tekes, A.T.; Canel, M.

    2008-07-01

    The reactivities of chars obtained by pyrolysis of Bursa Mustafa Kemal Pasa Alpagut lignite and Balkesir Dursunbey Cakiirca lignite (Turkey) at different temperatures were determined by CO{sub 2} gasification and by combustion with O{sub 2}. Catalytic effect of Na{sub 2}CO{sub 3} on the CO{sub 2} and O{sub 2} gasification reactivity of chars was investigated. Gasification tests were performed in the fixed bed reactors operating at ambient pressure. Reactivity of chars during the CO{sub 2} gasification reactions was determined by calculating the reaction rate constants and reactivity of chars during the O{sub 2} gasification was determined by using ignition temperatures of the samples. Activation energies and Arrhenius constants of the chars on the CO{sub 2} gasification reactions were also calculated by the help of Arrhenius curves. The activation energy for CO{sub 2} gasification was generally decreased with pyrolysis temperature, due to the different surface characteristics and different nature of carbon atoms gasified as the gasification reactions proceed. Generally, the increase in pyrolysis temperature leads to an increase in gasification reactivity with CO{sub 2}. The reactivity of chars in catalytic gasification was higher than the corresponding non-catalytic reactivity of the same chars. Ignition temperature increased with increasing pyrolysis temperature.

  3. The influence of population structure on gene expression and flowering time variation in the ubiquitous weed Capsella bursa-pastoris (Brassicaceae).

    PubMed

    Kryvokhyzha, Dmytro; Holm, Karl; Chen, Jun; Cornille, Amandine; Glémin, Sylvain; Wright, Stephen I; Lagercrantz, Ulf; Lascoux, Martin

    2016-03-01

    Population structure is a potential problem when testing for adaptive phenotypic differences among populations. The observed phenotypic differences among populations can simply be due to genetic drift, and if the genetic distance between them is not considered, the differentiation may be falsely interpreted as adaptive. Conversely, adaptive and demographic processes might have been tightly associated and correcting for the population structure may lead to false negatives. Here, we evaluated this problem in the cosmopolitan weed Capsella bursa-pastoris. We used RNA-Seq to analyse gene expression differences among 24 accessions, which belonged to a much larger group that had been previously characterized for flowering time and circadian rhythm and were genotyped using genotyping-by-sequencing (GBS) technique. We found that clustering of accessions for gene expression retrieved the same three clusters that were obtained with GBS data previously, namely Europe, the Middle East and Asia. Moreover, the three groups were also differentiated for both flowering time and circadian rhythm variation. Correction for population genetic structure when analysing differential gene expression analysis removed all differences among the three groups. This may suggest that most differences are neutral and simply reflect population history. However, geographical variation in flowering time and circadian rhythm indicated that the distribution of adaptive traits might be confounded by population structure. To bypass this confounding effect, we compared gene expression differentiation between flowering ecotypes within the genetic groups. Among the differentially expressed genes, FLOWERING LOCUS C was the strongest candidate for local adaptation in regulation of flowering time. PMID:26797895

  4. Forsythiaside attenuates lipopolysaccharide-induced inflammatory responses in the bursa of Fabricius of chickens by downregulating the NF-κB signaling pathway

    PubMed Central

    CHENG, GUANGDONG; ZHAO, YULIAN; LI, HE; WU, YUE; LI, XIANXIAN; HAN, QIANG; DAI, CHONGSHAN; LI, YANHUA

    2014-01-01

    Forsythiaside, a phenylethanoside product isolated from air-dried fruits of Forsythia suspensa, has been demonstrated to exhibit antioxidant, antibacterial and anti-inflammatory activities in vitro. However, its mechanism and the effects of lipopolysaccharide (LPS)-induced injury on the bursa of Fabricius (BF) of chickens are poorly understood. The present study aimed to investigate the anti-inflammatory effects of forsythiaside on LPS-induced acute inflammation. In addition, the potential molecular mechanisms of forsythiaside were analyzed in the BF, a special immune organ in chickens. Forty 15-day-old chickens were randomly divided into control, LPS and LPS plus forsythiaside (30 or 60 mg/kg) groups (n=10 for each group). In the LPS plus forsythiaside (30 or 60 mg/kg) groups, the chickens were orally administered with forsythiaside at doses of 30 and 60 mg/kg for seven days. At 21 days old, the chickens were intravenously injected with 200 μg/kg body weight LPS. Chickens in the control and LPS groups were only administered with vehicle or LPS, respectively, at day 21. At 3 h post-injection, the body temperature and nitric oxide (NO) levels were analyzed. In addition, the levels and mRNA expression of pro-inflammatory cytokines, including tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6) and IL-1β, and the mRNA expression of nuclear factor-κB (NF-κB), cyclooxygenase-2 (COX-2) and inducible NO synthase (iNOS), were examined in the BFs isolated from the chickens. The results revealed that forsythiaside was able to attenuate the LPS-induced inflammatory responses in the BFs of the chickens. The mechanisms by which forsythiaside exerted its anti-inflammatory effect were found to correlate with the inhibition of IL-6, IL-1β, TNF-α and COX-2 production, via the inactivation of NF-κB, indicating that the NF-κB-iNOS-NO signaling pathway may be important in this process. PMID:24348786

  5. Dual infections with low virulent chicken infectious anaemia virus (lvCIAV) and intermediate infectious bursal disease virus (iIBDV) in young chicks increase lvCIAV in thymus and bursa while decreasing lymphocyte disorders induced by iIBDV.

    PubMed

    Vaziry, Asaad; Silim, Amer; Bleau, Christian; Frenette, Diane; Lamontagne, Lucie

    2013-04-01

    The use of attenuated vaccines or the occurrence of low virulent T-lymphotropic or B-lymphotropic viruses in flocks may alter the immune responses of young chicks in spite of the absence of clinical signs. Infections with a low virulent T-lymphotropic chicken infectious anaemia virus (lvCIAV) followed by infection with an intermediate B-lymphotropic infectious bursal disease virus (iIBDV) were conducted in specific pathogen free chicks. Thirty-six 1-day-old chicks were infected with the lvCIAV strain (CAV-VAC®) and a similar number of chicks were inoculated with phosphate-buffered saline. At 14 days after lvCIAV infection, one group of 18 lvCIAV-infected chicks and one group of 18 uninfected chicks were infected with an iIBDV strain. At 4, 7 and 14 days post infection with iIBDV, six chicks from each group were euthanized and lymphoid organs were collected. Detection of lvCIAV and iIBDV genomes was conducted by polymerase chain reaction and reverse transcriptase-polymerase chain reaction, respectively. Double-labelled lymphoid subsets from the thymus, spleen and bursa were studied by cytofluorometric analysis. The results reveal that previous infection with lvCIAV increases the occurrence of the lvCIAV and iIBDV genome in thymus and/or bursa without the occurrence of clinical signs in dually lvCIAV/iIBDV-infected chicks. However, the decreases of B cells in spleen and bursa and increases of T-cell subsets in bursa observed in chicks infected with iIBDV did not occur in chicks previously infected with lvCIAV. Taken together, these results suggest that previous infection of young chicks with lvCIAV decreases lymphoid disorders induced by iIBDV while subsequent iIBDV infection increases the lvCIAV genome in lymphoid organs. PMID:23581435

  6. Pelvic osteomyelitis mimicking septic hip arthritis: a case report.

    PubMed

    Takemoto, Richelle C; Strongwater, Allan M

    2009-09-01

    Peripelvic infections are rare, compared with the incidence of septic hip arthritis, but are serious, requiring emergent treatment. They often are not included in differential diagnoses for patients presenting with fever, pain, inability to bear weight, elevated white blood cell count, and elevated erythrocyte sedimentation rate. Most patients are treated initially as a septic hip arthritis. Early diagnosis and treatment are crucial to outcome in peripelvic abscess. Use of MRI may help to elucidate the correct diagnosis. Previously reported peripelvic infections included obturator internus and externus, and psoas, but to the best of our knowledge, this is first case report of infection of the ischiopubic ramus synchondrosis presenting as septic arthritis. PMID:19491707

  7. Corrosion and cytotoxicity evaluation of thermafil endodontic obturator carriers.

    PubMed

    Sutow, E J; Foong, W C; Zakariasen, K L; Hall, G C; Jones, D W

    1999-08-01

    The purpose of this study was to evaluate the in vitro cytotoxicity of two metallic and two plastic Thermafil carrier materials, and to separately evaluate the in vitro corrosion behavior of the two metallic carriers. Stainless-steel, Ti-6AI-4V, Polysulfone, and Vectra carriers were evaluated for cytotoxicity using the ISO-recommended agar overlay test. The two metallic carriers were additionally corrosion tested in 0.9% NaCl solution for 174 wk, at 37 degrees C. Elemental analyses of the corrosion solutions were periodically conducted using inductively coupled plasma-mass spectroscopy. Agar overlay results showed that the four carrier materials were not cytotoxic to L929 fibroblasts. Inductively coupled plasma-mass spectroscopy results showed that the metallic materials had small mass loss rates. Scanning electron microscopy showed no evidence of pitting or crevice corrosion. PMID:10635223

  8. Magnet-Retained Facial Prosthesis Combined with Maxillary Obturator

    PubMed Central

    Hatami, Mahnaz; Badrian, Hamid; Samanipoor, Siamak; Goiato, Marcelo Coelho

    2013-01-01

    Prosthetic rehabilitation of the midfacial defects has always perplexed prosthodontists. These defects lead to functional and esthetic deficiencies. The purpose of this clinical case report was the presentation of the prosthetic rehabilitation of an extraoral-intraoral defect using two-piece prosthesis magnetically connected. This prosthesis has dramatically improved the patient's speech, mastication, swallowing, and esthetic. PMID:23738151

  9. Quality improvement of photopolimerizable-cement root canal obturation

    NASA Astrophysics Data System (ADS)

    Lupato Conrado, Luis A.; Frois, Iris M.; Amaro Zangaro, Renato; Munin, Egberto; Kuranaga, Carlos; Dias da Silva, Marcos; do Carmo de Andrade Nono, Maria; Cerquiera Rezende, Mirabel

    2003-06-01

    The sealing cements commonly used for endodontic applications are of the type cured through chemical reactions. During the polymerization process, mechanical contractions are not uncommon, leading to a non-perfect sealing. Photopolymerizable cements usually presents superior performance as compared to those chemically activated. However, difficulties in carrying the light to difficult-to-reach regions like the dental apex preclude those material of being accepted in the dental office routine. This work reports on a novel technique which allow the light curing of photopolymerizable cements in endodontic applications. A special light guide had been developed to allow the curing light to reach and polymerize the sealing cement in the apex region. The technique was tested by using single-root human teeth with normal canal morphology. The Ultradent EndoREZ root canal sealer and a resin-based photopolymerizable filler specially developed for the current application had been used. The cone-shaped light guide was introduced into treated canals filled with the photopolymerizable material, up to the apical region. Light from an argon laser was launched onto the light guide for polymerization. All test samples were immersed in methylene-blue solution for microleakage testing. All samples treated with the self-polymerizable material presented dye penetration to some extent. No sample within the group which had the filling material polymerized by using the light guide presented dye penetration through the canal wall.

  10. Mosses beta radioactivity in Katirli mountain-Bursa, TURKEY

    NASA Astrophysics Data System (ADS)

    Kahraman, A. G.; Kaynak, G.; Akkaya, G.; Gultekin, A.; Gurler, O.; Yalcin, S.

    2007-04-01

    Mosses are one of the most widely used procedures to determine via plant of radioactive contamination. The high concentrating capacity of mosses may be used as bioindicator of environmental radioactive contamination. In this study, the mosses were collected in region of Katirli Mountain in northwestern Turkey, activities were determined using TENNELEC LB 1000-PW detector. Samples of mosses growing on soil, rock, and tree bark were collected.