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Temporomandibular joint

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https://www.readbyqxmd.com/read/29034273/comparison-of-the-effects-of-transcutaneous-electrical-nerve-stimulation-and-low-level-laser-therapy-on-drug-resistant-temporomandibular-disorders
#1
Fahimeh Rezazadeh, Khadijeh Hajian, Shoaleh Shahidi, Soraya Piroozi
STATEMENT OF THE PROBLEM: Temporomandibular disorder (TMD) is a clinical term used for clinical signs and symptoms that affect the temporomandibular joints, masticatory muscles, and associated structures. Surgical and non-surgical treatments can be used for management of TMD. Non-surgical route is the main part of the treatment, since clinicians prefer non-aggressive treatment for TMD such as pharmacological and physical therapy. Low-level laser therapy (LLLT) and transcutaneous electrical nerve stimulation (TENS) are the main procedures in physical therapy...
September 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29034269/the-role-of-botulinum-toxin-a-in-treatment-of-temporomandibular-joint-disorders-a-review
#2
REVIEW
Rana Ataran, Ayla Bahramian, Zahra Jamali, Vahid Pishahang, Homayoon Sadeghi Barzegani, Parvin Sarbakhsh, Javad Yazdani
Temporomandibular joint disorders (TMDs) usually present with symptoms and signs such as pain, mandibular movement, dysfunction, or joint sounds. Botulinum toxin type A (BTX-A) is a biologic toxin which inhibits skeletal muscle through hindering the production of acetylcholine in the nerve endings. This toxin is used for the treatment of hyperactivity of lateral pterygoid muscle and TMD symptoms. This comprehensive review aimed to evaluate the effect of BTX-A injections in the lateral pterygoid muscle on treatment of TMDs symptoms...
September 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/29032864/dietary-variation-and-mechanical-properties-of-articular-cartilage-in-the-temporomandibular-joint-implications-for-the-role-of-plasticity-in-mechanobiology-and-pathobiology
#3
Matthew J Ravosa, Robert J Kane
Due to their nature as tissue composites, skeletal joints pose an additional challenge in terms of evaluating the functional significance of morphological variation in their bony and cartilaginous components in response to altered loading conditions. Arguably, this complexity requires more direct means of investigating joint plasticity and performance than typically employed to analyze macro- and micro-anatomical phenomena. To address a significant gap in our understanding of the plasticity of the mammalian temporomandibular joint (TMJ), we investigated the histology and mechanical properties of condylar articular cartilage in rabbits subjected to long-term variation in diet-induced masticatory stresses, specifically cyclical loading...
August 25, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/29031528/a-rare-unusual-presentation-of-primary-tuberculosis-in-the-temporomandibular-joint
#4
N T Geetha, Amarnath P Upasi, K V Umashakara, Kirthikumar Rai
Tuberculosis (TB) is a very common health problem in developing nations such as India. It can present as its primary form or as secondary forms (extrapulmonary TB). Maxillofacial manifestations of TB compose nearly 10% of all extrapulmonary manifestations of the disease. Extrapulmonary TB involving the maxillofacial region is very rare and can present in any tissues in this region. These infections generally involve the head and neck through hematogenous or lymphatic routes. Very few cases of primary TB of the temporomandibular joint (TMJ) have been reported in the literature...
September 19, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29030281/disc-repositioning-plus-temporal-eminectomy-for-temporomandibular-joint-internal-derangement-a-pilot-study
#5
René Pedraza-Alarcon, Martín Pinzón-Navarro, Cristián E Bachelet, Perla Villamor
INTRODUCTION: Temporomandibular joint internal derangement is a common disorder, which usually resolves with conservative management. However, 5% of patients require surgery, and although many techniques have been described, a gold standard surgical procedure has not yet been established. OBJECTIVES: The aim of this study was to compare the clinical outcome of disc repositioning plus temporal eminectomy versus disc repositioning alone, for the treatment of temporomandibular joint internal derangement...
October 10, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29026514/longstanding-unilateral-dislocation-of-the-temporomandibular-joint-in-a-6-year-old-girl
#6
Kemal M Tekeli, Keith Altman
Unilateral longstanding dislocation of the temporomandibular joint (TMJ) is rare in children. These patients may demonstrate some function in opening and closing of the mouth due to the formation of a pseudo-joint in the dislocated position. In this report we describe a case of longstanding unilateral dislocation of the TMJ in a 6-year-old girl, highlighting the diagnostic difficulty and management of the condition.
October 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29022844/laser-biophotomodulation-in-patients-with-neurosensory-disturbance-of-the-inferior-alveolar-nerve-after-sagittal-split-ramus-osteotomy-a-2-year-follow-up-study
#7
Daniela Guarini, Benjamín Gracia, Valeria Ramírez-Lobos, Alfredo Noguera-Pantoja, Pedro Solé-Ventura
OBJECTIVES: To evaluate the effect of the application of photobiomodulation in a 2-year follow-up period in patients who have been intervened with a sagittal ramus split osteotomy and present neurosensory disturbance of the inferior alveolar nerve. BACKGROUND: Photobiomodulation is a common clinical tool in dentistry, for its beneficial effects have been shown in surgical and periodontal wound healing, reducing of swelling and pain, neurosensory recovery, and treatment of temporomandibular joint disorders...
October 12, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29020504/fibrocartilage-stem-cells-engraft-and-self-organize-into-vascularized-bone
#8
J Nathan, A Ruscitto, S Pylawka, A Soharby, C J Shawber, M C Embree
Angiogenesis is a complex, multicellular process that is critical for bone development and generation. Endochondral ossification depends on an avascular cartilage template that completely remodels into vascularized bone and involves a dynamic interplay among chondrocytes, osteoblasts, and endothelial cells. We have discovered fibrocartilage stem cells (FCSCs) derived from the temporomandibular joint (TMJ) mandibular condyle that generates cartilage anlagen, which is subsequently remodeled into vascularized bone using an ectopic transplantation model...
October 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/29017019/results-of-combined-single-session-arthrocentesis-and-dextrose-prolotherapy-for-symptomatic-temporomandibular-joint-syndrome-a-case-series
#9
Burak Cezairli, Efe Can Sivrikaya, Mehmet Melih Omezli, Ferhat Ayranci, Neslihan Seyhan Cezairli
OBJECTIVE: Arthrocentesis and prolotherapy are nonsurgical treatments for temporomandibular joint (TMJ) diseases. This study aimed to evaluate the treatment of hypermobility, pain, and displacement of the TMJ by consecutively performing arthrocentesis and prolotherapy in the same session. MATERIALS AND METHODS: In this study, 10 adults with disc displacement and painful, hypermobile TMJ were selected. Arthrocentesis and prolotherapy were consecutively performed using a 30% dextrose solution that was simultaneously injected into five areas: posterior disc attachment, superior joint space, superior and inferior capsular attachments, and stylomandibular ligament...
October 10, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/28993018/functional-correlates-of-the-position-of-the-axis-of-rotation-of-the-mandible-during-chewing-in-non-human-primates
#10
Jose Iriarte-Diaz, Claire E Terhune, Andrea B Taylor, Callum F Ross
The location of the axis of rotation (AoR) of the mandible was quantified using the helical axis (HA) in eight individuals from three species of non-human primates: Papio anubis, Cebus apella, and Macaca mulatta. These data were used to test three hypotheses regarding the functional significance of anteroposterior condylar translation - an AoR located inferior to the temporomandibular joint (TMJ) - during chewing: minimizing impingement of the gonial region on cervical soft tissue structures during jaw opening; avoiding stretching of the inferior alveolar neurovascular bundle (IANB); and increasing jaw-elevator muscle torques...
August 23, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28990016/orthodontics-and-the-temporomandibular-joint-what-orthodontic-providers-need-to-know
#11
Charles S Greene, Maria Therese S Galang-Boquiren, Bo Yeon Bartilotta
Currently, there are three major groups of dentists who provide orthodontic services to the public: postgraduate trained orthodontists, postgraduate trained pediatric dentists, and general dentists who have taken various orthodontic training courses. All of them can expect to encounter a variety of clinical situations that require a proper understanding of how normal temporomandibular joints (TMJs) function, and also how the masticatory system can develop pain-dysfunction problems; those problems are classified and defined as temporomandibular disorders (TMDs)...
October 6, 2017: Quintessence International
https://www.readbyqxmd.com/read/28987286/determination-of-sex-differences-of-human-cadaveric-mandibular-condyles-using-statistical-shape-and-trait-modeling
#12
Jessica S Coogan, Do-Gyoon Kim, Todd L Bredbenner, Daniel P Nicolella
The objective of this study was to elucidate sex differences in the anatomy of human temporomandibular joint mandibular condyles using a statistical shape and trait model (SSTM). Mandibles were obtained from 16 human cadavers (79±13years). The condyles were scanned using micro-computed tomography with 27μm resolution. An image processing algorithm was used to segment the bone, determine the border of the entire mandibular condyle and trabecular bone compartments, and create triangulated meshes of the compartments...
October 4, 2017: Bone
https://www.readbyqxmd.com/read/28983677/reduced-dose-c-arm-computed-tomography-applications-at-a-pediatric-institution
#13
Michael Acord, Sphoorti Shellikeri, Seth Vatsky, Abhay Srinivasan, Ganesh Krishnamurthy, Marc S Keller, Anne Marie Cahill
BACKGROUND: Reduced-dose C-arm computed tomography (CT) uses flat-panel detectors to acquire real-time 3-D images in the interventional radiology suite to assist with anatomical localization and procedure planning. OBJECTIVE: To describe dose-reduction techniques for C-arm CT at a pediatric institution and to provide guidance for implementation. MATERIALS AND METHODS: We conducted a 5-year retrospective study on procedures using an institution-specific reduced-dose protocol: 5 or 8 s Dyna Rotation, 248/396 projection images/acquisition and 0...
October 5, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28970076/temporomandibular-joint%C3%A2-involvement-in-ankylosing-spondylitis
#14
Faten Frikha, Mouna Snoussi, Sondes Briki, Fathi Karray, Zouhir Bahloul
No abstract text is available yet for this article.
September 29, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28966039/temporomandibular-disorder-otologic-implications-and-its-relationship-to-sleep-bruxism
#15
Bruno Gama Magalhães, Jaciel Leandro de Melo Freitas, André Cavalcanti da Silva Barbosa, Maria Cecília Scheidegger Neves Gueiros, Simone Guimarães Farias Gomes, Aronita Rosenblatt, Arnaldo de França Caldas Júnior
INTRODUCTION: Temporomandibular disorder is an umbrella term for various clinical problems affecting the muscles of mastication, temporomandibular joint and associated structures. This disorder has a multifactor etiology, with oral parafunctional habits considered an important co-factor. Among such habits, sleep bruxism is considered a causal agent involved in the initiation and/or perpetuation of temporomandibular disorder. That condition can result in pain otologic symptoms. OBJECTIVE: The aim of the present study was to investigate the relationship between temporomandibular disorder and both otologic symptoms and bruxism...
August 23, 2017: Brazilian Journal of Otorhinolaryngology
https://www.readbyqxmd.com/read/28964665/recurrent-synovial-chondromatosis-of-the-temporomandibular-joint-report-of-two-cases
#16
Z-X Han, M-J Chen, C Yang, M-J Dong
Synovial chondromatosis is the most common tumour-like lesion that is found in the temporomandibular joint (TMJ). Although it is benign and self-limiting, it can recur. We retrospectively reviewed 274 cases that were treated in our department from 2001-16 and found two recurrences, the radiological, surgical, histopathological, and follow-up results of which we report here. The reasons for their recurrence were analysed and elucidated.
September 27, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28956095/imaging-findings-of-copa-syndrome-in-a-12-year-old-boy
#17
Razan Noorelahi, Geovany Perez, Hansel J Otero
Copa syndrome is a newly described autosomal dominant autoinflammatory disease that presents as pulmonary hemosiderosis and polyarticular arthritis. Twenty-one cases from five families have been reported to date. We present chest computed tomography (CT) and temporomandibular joint magnetic resonance (MR) findings of a 12-year-old boy presenting with dyspnea on exertion, fatigue and clubbing. Additional findings included a restrictive pattern of pulmonary involvement and positive inflammatory markers and autoantibodies...
September 28, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28944379/septic-arthritis-of-the-temporomandibular-joint-after-acute-otitis-media-in-a-child
#18
Kathia Dubron, Jan Meeus, Koenraad Grisar, Stefanie Desmet, Titiaan Dormaar, Yannick Spaey, Constantinus Politis
Septic arthritis of the temporomandibular joint as a complication of acute otitis media is rare in the Western world. This report describes the case of a 7-year-old boy who had pain in his right ear and limited mouth opening, following the onset of acute otitis media. A contrast-enhanced computed tomography scan revealed right-sided mastoiditis and hydrops of the right temporomandibular joint, suggesting septic arthritis. Real-time PCR and microbiologic analysis identified Streptococcus pyogenes and Staphylococcus epidermidis in the joint aspirate...
September 22, 2017: Quintessence International
https://www.readbyqxmd.com/read/28943181/clinical-study-of-splint-therapeutic-efficacy-for-the-relief-of-temporomandibular-joint-discomfort
#19
Yoko Hasegawa, Naoya Kakimoto, Seiki Tomita, Masanori Fujiwara, Reichi Ishikura, Hiromitsu Kishimoto, Kosuke Honda
PURPOSE: This study aimed to evaluate the relationship between displacement of the mandibular condyle/disc due to occlusal splint insertion with splint therapy and changes in discomfort of the temporomandibular joint (TMJ), and to clarify the relationships between the outcomes over time of temporomandibular discomfort and TMJ magnetic resonance imaging (MRI) findings at the initiation of splint therapy. MATERIALS AND METHODS: A total of 75 patients admitted to hospital with discomfort around the TMJ were evaluated...
August 24, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28942310/dental-and-temporomandibular-joint-pathology-of-the-north-american-brown-bear-ursus-arctos-horribilis-ursus-arctos-middendorffi-and-ursus-arctos-sitkensis
#20
J N Winer, B Arzi, S Döring, P H Kass, F J M Verstraete
Museum specimens (maxillae and mandibles) from 393 North American brown bears (Ursus arctos) from Alaska were examined macroscopically according to predefined criteria and 204 specimens were included in this study. The specimens were acquired between 1905 and 2012. There were 99 specimens (48.5%) from male animals, 87 (42.7%) from female animals and 18 (8.8%) from animals of unknown sex. The ages of the animals ranged from neonate to adult, with 92 adults (45.1%) and 112 young adults (54.9%) included and neonates/juveniles excluded from the study...
August 2017: Journal of Comparative Pathology
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