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Temporomandibular

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https://www.readbyqxmd.com/read/28342326/sex-dependent-mechanical-properties-of-the-human-mandibular-condyle
#1
Do-Gyoon Kim, Arman Haghighi, Hyun-Jung Kwon, Jessica S Coogan, Daniel P Nicolella, Trenton B Johnson, Hwan D Kim, Nari Kim, Amanda M Agnew
The mandibular condyle consists of articular cartilage and subchondral bone that play an important role in bearing loads at the temporomandibular joint (TMJ) during static occlusion and dynamic mastication. The objective of the current study was to examine effects of sex and cartilage on 1) static and dynamic mechanical analysis (DMA) based dynamic energy storage and dissipation for the cartilage-subchondral bone construct of the human mandibular condyle, and 2) their correlations with the tissue mineral density and trabecular morphological parameters of subchondral bone...
March 16, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28341880/long-term-skeletal-and-dental-effects-of-facemask-versus-chincup-treatment-in-class-iii-patients-a-retrospective-study
#2
B Wendl, M Stampfl, A P Muchitsch, H Droschl, H Winsauer, A Walter, M Wendl, T Wendl
OBJECTIVES: To investigate the skeletal and dental changes during chincup versus facemask treatment, to compare the long-term effects of the two appliances, and to document the impact of each on treatment success. METHODS: In all, 61 patients with Class III syndrome were retrospectively analyzed at three examination times: 7.8 ± 1.7 years of age (T0, pretreatment), 9.6 ± 2.4 years of age (T1, posttreatment), and around 15-20 years later (T2, long-term follow-up)...
March 24, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28341537/interleukin-6-expression-in-disc-derangement-of-human-temporomandibular-joint-and-association-with-osteoarthrosis
#3
Flavio de Alcântara Camejo, Marina Azevedo, Viviane Ambros, Karina São Thiago Caporal, Andrea Duarte Doetzer, Luis Eduardo Almeida, Marcia Olandoski, Lucia Noronha, Paula Cristina Trevilatto
The inflammatory process is a coordinated response that protects host after infection or trauma, involving several molecular reactions. Once the inflammation is closely linked to the process of destruction of the temporomandibular joint, this study aims to examine, by immunohistochemistry, the expression of interleukin-6 (IL-6), an important inflammatory marker, in temporomandibular articular discs of patients with anterior disc displacement with (ADDwR) and without reduction (ADDwoR) and its association with osteoarthrosis (OA)...
February 24, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28341434/trends-in-maxillofacial-imaging
#4
REVIEW
R Boeddinghaus, A Whyte
Maxillofacial imaging encompasses radiology of the teeth and jaws, including the temporomandibular joints. Modalities used include intra-oral radiographs, panoramic tomography, cephalograms, cone-beam computed tomography, computed tomography, magnetic resonance imaging, ultrasound, and radionuclide imaging. Common indications for imaging are impacted and supernumerary teeth, dental implants, inflammatory dental disease, and fibro-osseous lesions, cysts, and masses of the jaws. Osteonecrosis of the jaws may follow radiotherapy or the use of bisphosphonates and other drugs...
March 21, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28341275/current-thinking-about-the-management-of-dysfunction-of-the-temporomandibular-joint-a-review
#5
REVIEW
S Rajapakse, N Ahmed, A J Sidebottom
Increasingly the management of TMJ pathology is becoming a subspecialist interest. The number of patients having TMJ joint replacement had steadily increased over the last decade and there is now NICE guidance on this matter. Whilst the evidence of the management of TMJ disease is limited and there are few randomised controlled trials, the incidence of TMJ pathology has not changed and there is a requirement for guidance on the management. Whilst previously patients with TMJ pain were managed surgically, this is changing, and the vast bulk of initial management is non-surgical/medical...
March 21, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28338212/management-of-temporomandibular-disorders-by-ministry-of-public-health-dentists-in-central-thailand
#6
Supang Chanton, Supranee Vicheinnet, Chanchai Hosanguan, Wantanee Mutirangura
Very little is known about the ability of dentists to diagnose and treat temporomandibular disorders (TMDs). The aims of this study were to investigate whether dentists in Central Thailand diagnosed TMD subcategories before initiating treatment for TMDs and to explore the frequency of corresponding treatments. METHODS: A questionnaire covering TMD management was developed and posted to all Ministry of Public Health dentists (n = 969) in Central Thailand. The data were analysed using descriptive statistics...
March 24, 2017: International Dental Journal
https://www.readbyqxmd.com/read/28337986/simultaneous-treatment-of-temporomandibular-joint-ankylosis-with-severe-mandibular-deficiency-by-standard-tmj-prosthesis
#7
YiHui Hu, LuZhu Zhang, DongMei He, Chi Yang, MinJie Chen, ShanYong Zhang, Hui Li, Edward Ellis Iii
Temporomandibular joint (TMJ) ankylosis is a refractory disease that is difficult to predictably treat. This study evaluated the prognosis of using standard alloplastic TMJ prostheses for the treatment of TMJ ankylosis in Chinese patients with severe mandibular deficiency. Patients treated from 2013 to 2015 were reviewed. The computer-aided design and manufacture (CAD/CAM) technique was used to guide bony mass removal and locate the TMJ prosthesis (Biomet, USA). Eleven patients were included in this study. All prostheses were successfully installed and stabilized intraoperatively...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337262/osteopontin-stimulates-matrix-metalloproteinase-expression-through-the-nuclear-factor-%C3%AE%C2%BAb-signaling-pathway-in-rat-temporomandibular-joint-and-condylar-chondrocytes
#8
Feng Ding, Jing Wang, Guoxiong Zhu, Huaqiang Zhao, Gaoyi Wu, Lei Chen
BACKGROUND: To examine the possible regulatory mechanisms of osteopontin (OPN) and the nuclear factor-κB (NF-κB) signaling pathway in the temporomandibular joint (TMJ) of rats subjected to chronic sleep deprivation (CSD). METHODS: Rats were subjected to CSD using the modified multiple platform method. The histomorphology of the TMJ was observed by hematoxylin-eosin staining. OPN and NF-κB/p65 expression were detected by immunohistochemical and immunofluorescence staining together with western blotting...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/28333775/pigmented-villonodular-synovitis-of-the-temporomandibular-joint-with-petrous-bone-invasion
#9
Miguel Vaca, Ruben Polo, Juan Martínez-San-Millán, Maria Eugenia Reguero, Cecilia Pérez, Adela Cordero, Maria Del Mar Medina, Ignacio Cobeta
No abstract text is available yet for this article.
March 22, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28332854/the-intravoxel-incoherent-motion-mri-of-lateral-pterygoid-muscle-a-quantitative-analysis-in-patients-with-temporomandibular-joint-disorders
#10
Supak Ngamsom, Shin Nakamura, Junichiro Sakamoto, Shinya Kotaki, Akemi Tetsumura, Tohru Kurabayashi
OBJECTIVES: To quantitatively evaluate diffusion and perfusion status of lateral pterygoid muscle (LPM) in patients with temporomandibular joint disorder (TMD) by intravoxel incoherent motion (IVIM) imaging and to correlate with findings on temporomandibular joints (TMJs) by conventional MRI. METHODS: 42 patients with TMD underwent MRI. To assess IVIM parameters, diffusion-weighted imaging was obtained by spin-echo-based single-shot echoplanar imaging. Regions of interest were created on all diffusion-weighted images of the superior belly of the lateral pterygoid (SLP) and inferior belly of the lateral pterygoid (ILP) at b-values 0-500 s mm(-2)...
March 23, 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/28330573/implication-of-general-anaesthetic-and-sedation-techniques-in-temporomandibular-joint-disorders%C3%A2-%C3%A2-a-systematic-review
#11
J Talaván-Serna, J M Montiel-Company, C Bellot-Arcís, J M Almerich-Silla
The purpose of this study was to conduct a systematic review of the literature on temporomandibular joint damage directly related to general anaesthesia and sedation. We searched MEDLINE, SCOPUS and the COCHRANE Library for titles and abstracts containing terms related to the subject. The search delimiters were analytical and descriptive studies with abstracts in Spanish, German, English or French, with no time limit. The search was updated in January 2015. Of the 398 articles found, 89 were duplicates and only 28 were of interest...
February 2017: J Stomatol Oral Maxillofac Surg
https://www.readbyqxmd.com/read/28328603/simultaneous-autologus-mandible-and-temporomandibular-joint-reconstruction
#12
Yigit Ozer Tiftikcioglu, Ersin Gur, Ufuk Bilkay
Ablative surgery of mandible often necessitates combined reconstruction of the mandible and the temporomandibular joint. Fibula-free flaps with gap arthroplasty or osseochondral grafts are common procedures in the authors' practice. In search for a better reconstructive option free fibula flap is used together with a metatarsal bone flap for the vascular reconstruction of the mandibular body and the condyle at the same time. The 2 osseous-free flaps have been fused and used as a combined flow through double-free flap...
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28326983/morphologic-and-morphometric-description-of-the-temporomandibular-joint-in-the-domestic-dog-using-computed-tomography
#13
Lenin A Villamizar-Martinez, Cristian M Villegas, Marco A Gioso, Alexander M Reiter, Geni C Patricio, Ana C Pinto
The temporomandibular joint (TMJ) in the domestic dog is a synovial joint with 2 articular surfaces, the mandibular fossa of the squamous portion of the temporal bone and the articular head of the condylar process of the mandible. Although different diagnostic imaging techniques have been used to study the TMJ in dogs, morphologic and morphometric studies based on computed tomography (CT) are scarce. The purpose of the present study was to describe the morphologic and morphometric features of the TMJ in domestic dogs using CT...
June 2016: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28326709/-cone-beam-computed-tomography-analysis-of-the-bony-structure-of-the-temporomandibular-joint-during-two-phase-treatment-with-herbst-appliance
#14
Chen Weiwei, Sang Ting, Huang Zhen, Wu Jun
OBJECTIVE: This study assessed the effects of two-phase treatment with Herbst appliance on the bony structure of the temporomandibular joint via cone beam computed tomography (CBCT) analysis. METHODS: This study selected 15 patients exhibiting early permanent dentition and classⅡmalocclusion combined with mandibular retrusion treated by a two phase treatment (Herbst and fixed appliance). The CBCT scans of the patients were obtained at the following stages: 2 weeks before Herbst treatment (T1), at the start of treatment when the Herbst appliance was set in place (T2), immediately after removal of the Herbst appliance (T3), and immediately after removal of the edgewise appliance (T4)...
October 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28325585/gender-differences-in-demographic-and-clinical-correlates-among-veterans-with-musculoskeletal-disorders
#15
Diana M Higgins, Brenda T Fenton, Mary A Driscoll, Alicia A Heapy, Robert D Kerns, Matthew J Bair, Constance Carroll, Penny L Brennan, Diana J Burgess, John D Piette, Sally G Haskell, Cynthia A Brandt, Joseph L Goulet
BACKGROUND: Studies suggest that women may be at greater risk for developing chronic pain and pain-related disability. METHODS: Because musculoskeletal disorders (MSD) are the most frequently endorsed painful conditions among veterans, we sought to characterize gender differences in sociodemographic and clinical correlates among veterans upon entry into Veterans Health Administration's Musculoskeletal Disorders Cohort (n = 4,128,008). RESULTS: Women were more likely to be younger, Black, unmarried, and veterans of recent conflicts...
March 18, 2017: Women's Health Issues: Official Publication of the Jacobs Institute of Women's Health
https://www.readbyqxmd.com/read/28318925/retrospective-evaluation-of-three-different-joint-surgeries-for-internal-derangements-of-the-temporomandibular-joint
#16
Celal Candirli, Mehmet Demirkol, Onur Yilmaz, Sadi Memis
PURPOSE: To compare the outcomes achieved with eminectomy, discectomy alone, and discectomy with an abdominal dermis fat graft (D + ADFG) in the treatment of internal derangements (IDs) of the temporomandibular joint (TMJ), and to briefly discuss the failed cases in which a second operation was needed. PATIENTS AND METHODS: This was a retrospective study of 31 patients (27 females, 4 males) who were unresponsive to conservative therapy and therefore underwent eminectomy (group A, n = 6), discectomy alone (group B, n = 8), or D + ADFG (group C, n = 17)...
February 13, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318915/computer-assisted-positioning-of-the-proximal-segment-after-sagittal-split-osteotomy-of-the-mandible-preclinical-investigation-of-a-novel-electromagnetic-navigation-system
#17
Igor Nova, Sebastian Kallus, Moritz Berger, Oliver Ristow, Urs Eisenmann, Christian Freudlsperger, Jürgen Hoffmann, Hartmut Dickhaus
INTRODUCTION: Modifications of the temporomandibular joint position after mandible osteotomy are reluctantly accepted in orthognathic surgery. To tackle this problem, we developed a new navigation system using miniaturized electromagnetic sensors. Our imageless navigation approach is therefore optimized to avoid complications of previously proposed optical approaches such as the interference with established surgical procedures and the line of sight problem. MATERIAL AND METHODS: High oblique sagittal split osteotomies were performed on 6 plastic skull mandibles in a laboratory under conditions comparable to the operating theatre...
February 17, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28318085/inflammatory-double-hit-model-of-temporomandibular-joint-disorder-with-elevated-ccl2-cxcl9-cxcl10-rantes-and-behavioural-hypersensitivity-in-tnfr1-r2-mice
#18
S L McIlwrath, R Nesemeier, F Ma, H S Oz, L Zhang, K N Westlund
BACKGROUND: Patients with temporomandibular joint disorders (TMD), reactive arthritis and rheumatoid arthritis often have combined etiology of hereditary and microenvironmental factors contributing to joint pain. Multiple clinical and animal studies indicate 'double-hit' inflammatory insults can cause chronic inflammation. The first inflammatory insult primes the immune system and subsequent insults elicit amplified responses. The present 'double hit' study produced a chronic orofacial pain model in mice with genetic deletion of both TNFα receptors (TNFR1/R2-/-), investigating the main nociceptive signalling pathways in comparisons to wild type mice...
March 20, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28317450/personality-traits-are-potentially-associated-with-the-presence-of-chronic-temporomandibular-joint-pain-in-patients-without-effusion-as-determined-by-t-2-weighted-magnetic-resonance
#19
Daniele Manfredini, Silvia Cerea, Chiara Pavan, Luca Guarda-Nardini
OBJECTIVE: The study aimed at investigating personality traits in chronic temporomandibular joints (TMJ) pain patients with and without joint effusion. METHODS: Two groups of chronic TMJ pain patients were recruited. The TMJ pain control group was composed of patients showing magnetic resonance imaging (MRI) signs of TMJ effusion, while the TMJ pain test group included patients with chronic TMJ pain seemingly not justified, due to the absence of MRI-detected disorders...
March 20, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28317439/patterns-of-cervical-and-masticatory-impairment-in-subgroups-of-people-with-temporomandibular-disorders-an-explorative-approach-based-on-factor-analysis
#20
Nikolaus Ballenberger, Harry von Piekartz, Mira Danzeisen, Toby Hall
OBJECTIVES: To identify clinical patterns of impairment affecting the cervical spine and masticatory systems in different subcategories of temporomandibular disorder (TMD) by an explorative data-driven approach. METHODS: For this observational study, 144 subjects were subdivided according to Research Diagnostic Criteria for TMDs into: Healthy controls, temporomandibular joint (TMJ) signs without symptoms, TMJ affected, temporomandibular muscles affected, or TMJ and muscles affected...
March 20, 2017: Cranio: the Journal of Craniomandibular Practice
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