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https://www.readbyqxmd.com/read/28548559/the-yucatan-minipig-tmj-disc-structure-function-relationships-support-its-suitability-for-human-comparative-studies
#1
Natalia Vapniarsky, Ashkan Aryaei, Boaz Arzi, Jerry C Hu, David C Hatcher, Kyriacos A Athanasiou
Frequent involvement of the disc in temporomandibular joint (TMJ) disorders warrants attempts to tissue engineer TMJ disc replacements. Physiologically, a great degree of similarity is seen between humans and farm pigs (FPs), but the pig's rapid growth confers a significant challenge for in vivo experiments. Minipigs have a slower growth rate and are smaller than FPs, but minipig TMJ discs have yet to be fully characterized. The objective of this study was to determine the suitability of the minipig for TMJ studies by extensive structural and functional characterization...
May 26, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28545771/efficacy-of-proportional-condylectomy-in-a-treatment-protocol-for-unilateral-condylar-hyperplasia-a-review-of-73-cases
#2
Guillaume Mouallem, Zahia Vernex-Boukerma, Julie Longis, Jean-Philippe Perrin, Jean Delaire, Jacques-Marie Mercier, Pierre Corre
INTRODUCTION: Unilateral condylar hyperplasia (UCH) is characterized by an excessive growth of a mandibular condyle, resulting in facial, and occlusal deformities. Scintigraphic hyperactivity usually triggers the need of condylectomy. Delaire has presented a protocol for the treatment of active or non-active UCH using systematically a proportional condylectomy, which could solve both aetiology and adaptive deformities. The aim of this study was to evaluate this protocol by clinical and radiographical analysis...
April 21, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28532603/matrix-replenishing-by-bmscs-is-beneficial-for-osteoarthritic-temporomandiblar-joint-cartilage
#3
Mian Zhang, Hongxu Yang, Lei Lu, Xianghong Wan, Jing Zhang, Hongyun Zhang, Xiaodong Liu, Xiaofeng Huang, Guozhi Xiao, Meiqing Wang
OBJECTIVES: The present goal was to explore whether matrix replenishment is the primary requirement for osteoarthritic (OA) cartilage. METHODS: Cells isolated from the superficial and deep zone cartilage of a pig temporomandibular joint (TMJ) were exposed to fluid flow shear stress (FFSS). Differences in matrix production and cellular differentiation were detected. Unilateral anterior crossbite (UAC) was applied to C57BL/6J female mice. Green fluorescent protein-labelled exogenous bone marrow stromal cells (GFP-BMSCs) were injected weekly into TMJs, starting from 3 weeks of UAC stimulation and continuing for 4-, 8- and 12-weeks...
May 19, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28530780/retromandibular-transparotid-approach-for-subcondylar-mandibular-fractures-a-retrospective-study
#4
Gökhan Göçmen, Altan Varol, Onur Atalı, Sertaç Aktop, Selçuk Basa
BACKGROUND: The aim was to evaluate the effectiveness and complications of retromandibular transparotid approach performed for the reduction of dislocated subcondylar fractures. METHODS: Fourteen patients with subcondylar mandibular fractures were evaluated (8 male, 6 female, age range 19-43 years). The primary predictor variable in the present study was time (preoperative vs postoperative). The primary outcome variables were inflammatory complication, facial nerve deficit (House and Brackmann classification), and presence of parotid fistula...
May 2017: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28530471/structure-function-relationships-of-temporomandibular-retrodiscal-tissue
#5
M C Coombs, J M Petersen, G J Wright, S H Lu, B J Damon, H Yao
It is estimated that 2% to 4% of the US population will seek treatment for temporomandibular joint (TMJ) symptoms, typically occurring with anterior disc displacement. The temporomandibular retrodiscal tissue (RDT) has been postulated to restrict pathologic disc displacement. To elucidate RDT function, understanding regional RDT biomechanics and ultrastructure is required. No prior biomechanical analysis has determined regional variations in RDT properties or associated biomechanical outcomes with regional variations in collagen and elastin organization...
June 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28508937/the-prevalence-of-oropharyngeal-dysphagia-in-adults-presenting-with-temporomandibular-disorders-associated-with-rheumatoid-arthritis-a-systematic-review-and-meta-analysis
#6
REVIEW
Órla Gilheaney, Lina Zgaga, Isolde Harpur, Greg Sheaf, Liss Kiefer, Sibylle Béchet, Margaret Walshe
Temporomandibular disorders (TMDs) are the most frequent non-dental orofacial pain disorders and may be associated with rheumatoid arthritis (RA), resulting in oropharyngeal dysphagia (OD). However, clinicians' understanding of involvement with OD caused by RA-related TMDs is limited and the methodological quality of research in this field has been criticised. Therefore, the aim of this study was to systematically review the prevalence of oral preparatory and oral stage signs and symptoms of OD in adults presenting with TMDs associated with RA...
May 16, 2017: Dysphagia
https://www.readbyqxmd.com/read/28500876/does-adjunctive-botulinum-toxin-a-reduce-pain-scores-when-combined-with-temporomandibular-joint-arthroscopy-for-the-treatment-of-concomitant-temporomandibular-joint-arthralgia-and-myofascial-pain
#7
Nick Thomas, Sharon Aronovich
PURPOSE: Currently, there is no standard of care for the treatment of refractory myofascial pain and concomitant temporomandibular joint (TMJ) arthralgia. This comparative study was conducted to determine the effectiveness of botulinum toxin A (Btx), as an adjunct to TMJ arthroscopy, in this patient population. MATERIALS AND METHODS: A retrospective cohort study was conducted of patients who underwent TMJ arthroscopy with (Btx group) or without (control group) intramuscular Btx for TMJ arthritis and refractory myofascial pain at the University of Michigan (Ann Arbor) from 2011 through 2014...
April 19, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28495394/chronic-temporomandibular-joint-pain-two-cases-of-osteoid-osteoma-and-a-review-of-the-literature
#8
REVIEW
J T Deferm, S C A Steens, D Vriens, E M Bekers, S I Kalaykova, W A Borstlap
Osteoid osteoma is a benign bone tumour with self-limiting growth potential occurring in any part of the body. Two rare cases of a pathologically proven osteoid osteoma invading the temporomandibular joint (TMJ) are reported herein. This article also reviews the cases of osteoid osteoma of the craniofacial complex reported in the English-language literature to date. Although the clinical presentation of osteoid osteoma in the jaw differs from that of osteoid osteoma in the more common locations, the radiographic features are similar...
May 8, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28487216/patient-specific-factors-predicting-outcome-of-temporomandibular-joint-arthroscopy-a-6-year-retrospective-study
#9
Mattias Ulmner, Carina Kruger-Weiner, Bodil Lund
PURPOSE: Although indications for the surgical treatment of internal derangement of the temporomandibular joint (TMJ) and the choice of treatment are debated, arthroscopy seems generally accepted as a minimally invasive alternative. The objective of this study was to investigate various factors and their possible correlation with an unsuccessful outcome of arthroscopic lysis and lavage in patients diagnosed with chronic closed lock, arthralgia with or without concomitant osteoarthritis of the TMJ, or systemic rheumatologic disease with involvement of the TMJ...
April 13, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28483248/electromyographic-ratio-of-masseter-and-anterior-temporalis-muscles-in-children-with-and-without-temporomandibular-disorders
#10
Thaís Cristina Chaves, Aroldo Dos Santos Aguiar, Lilian Ramiro Felicio, Stella Maris Greghi, Simone Cecilio Hallak Regalo, Débora Bevilaqua-Grossi
OBJECTIVE: This study investigated differences in surface electromyography (sEMG) activity of the masseter and anterior temporalis muscles in children with and without temporomandibular disorders (TMD). PARTICIPANTS: Thirty-four children aged 8-12 years were recruited, comprising 17 children with TMD and 17 without TMD (control group [CG]). The children were quasi-matched for sex, age, weight, and height. sEMG data were obtained using Myosystem(®) Br-1 equipment with 12 channels to evaluate the bilateral masseter, anterior temporalis, and suprahyoid muscles...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28482441/-effect-of-temporomandibular-joint-disc-perforation-on-expression-of-type-%C3%A2-collagen-in-temporomandibular-joint-disc-cells
#11
M H Deng, J Xu, H X Cai, W Fang, X Long
Objective: To investigate the effect of temporomandibular joint (TMJ) disc perforation on expression of type Ⅰ collagen in TMJ disc cells. Methods: The fibroblastic-like cells from the surgical removed TMJ disc tissue (disc perforation or TMJ condyle hyperplasia) were cultured. The cultured cells were identified as fibroblastic-like cells by toluidine blue and immunofluorescence staining. The expression of type Ⅰ collagen was detected with Western blotting and the content of type Ⅰ collagen was examined by enzyme linked immunosorbent assay (ELISA)...
May 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28476093/association-of-condylar-bone-quality-with-tmj-osteoarthritis
#12
J Shi, S Lee, H C Pan, A Mohammad, A Lin, W Guo, E Chen, A Ahn, J Li, K Ting, J H Kwak
The etiology and treatment of temporomandibular joint (TMJ) osteoarthritis (TMJOA) remain complex and unclear. Based on clinical observations, we hypothesized that low condylar bone quality is significantly correlated with TMJOA and explored this association in a cross-sectional study with human patients. A total of 254 postmenopausal female participants were included in this study. Radiographic findings from cone beam computed tomography (CBCT) and clinical symptoms were used to classify each TMJ data sample as healthy control ( n = 124) or TMJOA ( n = 130)...
May 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28474074/-measurement-of-temporomandibular-joint-space-of-patients-with-obstructive-sleep-apnea-hypopnea-syndrome
#13
Rui Zhao, Wei-Sheng Wen, Ge Yang, Ye Tao, Rui Jia
PURPOSE: This research evaluated the morphological differences of temporomandibular joint (TMJ) between patients with obstructive sleep apnea hypopnea Syndrome (OSAHS) and normal population using magnetic resonance imaging (MRI). METHODS: Eighteen OSAHS patients were admitted from January 2014 to May 2016 and 18 healthy adults were chosen as control. OSAHS patients were divided into three sub-groups (n=6), i.e. the mild group, the moderate group and the severe group, according to apnea and hypopnea index (AHI)...
February 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28471560/arthroscopy-of-the-temporomandibular-joint-for-the-treatment-of-chronic-closed-lock
#14
Waseem Abboud, Sahar Nadel, Noam Yarom, Ran Yahalom
BACKGROUND: Temporomandibular joint (TMJ) disorders affect roughly 5% of the population. Chronic closed lock is one of the more common temporomandibular disorders and is characterized by limited mouth opening and various degrees of joint pain and dysfunction. OBJECTIVES: To evaluate the efficacy and safety of arthroscopic lysis and lavage of the TMJ to treat limited mouth opening in patients suffering from chronic closed lock. METHODS: This is a retrospective analysis of the medical records of 47 patients with chronic closed lock treated with arthroscopic lysis and lavage...
July 2016: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28462199/giant-cell-tumor-of-temporomandibular-joint-masquerading-as-temporomandibular-joint-pain-dysfunction-syndrome-a-rare-case-report
#15
Jo Ee Sam, Rullyandrianto Pan Nuriman Rachmat, Cri Saiful Jordan Melano, Nasser Abdul Wahab
Giant cell tumor (GCT) of the craniofacial bones has been reported but they are not common. This tumor occurs more often in women than in men and predominantly affects patients around the third to fifth decade of life. GCTs are generally benign but can be locally aggressive as well. We report a case of GCT involving the temporomandibular joint (TMJ), which was initially thought to be temporomandibular disorder (TMD). A 22-year-old female presented with swelling and pain over the right temporal region for 18 months associated with jaw locking and clicking sounds...
April 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28462182/evaluation-of-temporomandibular-disorders-before-and-after-orthognathic-surgery-therapeutic-considerations-on-a-sample-of-76-patients
#16
Carlo di Paolo, Giorgio Pompa, Paolo Arangio, Anna di Nunno, Stefano Di Carlo, Daniele Rosella, Piero Papi, Piero Cascone
OBJECTIVES: Temporomandibular disorders may be associated with dental and facial malformations. The aim of this study is to record the prevalence of TMDs in patients scheduled for orthognathic surgery, reporting the development of TMDs and symptoms during the entire period of the treatment, and demonstrating the benefits of a team effort on this population. MATERIALS AND METHODS: Assessment of temporomandibular status was performed using the RDC/TMD criteria at T0 (prior to orthodontic therapy), T1 (3 months after the surgery), and T2 post-therapeutic cycle (6 to 12 months postoperatively)...
March 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28461120/a-rare-complication-of-tonsillitis-septic-arthritis-of-the-temporomandibular-joint
#17
E Araz Server, O Onerci Celebi, B Hamit, O Yigit
Septic arthritis of the temporomandibular joint (TMJ) is a rarely seen clinical condition. Such an infection may be encountered following infections in the head and neck region, with direct or haematogenous spread to the joint. This article presents the case of a patient with tonsillitis leading to septic arthritis of the TMJ and reports the results of a review of the literature.
April 28, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28460873/long-term-therapeutic-effects-of-dextrose-prolotherapy-in-patients-with-hypermobility-of-the-temporomandibular-joint-a-single-arm-study-with-1-4-years-follow-up
#18
H Refai
The aim was to analyse the short-term and long-term therapeutic efficacy of dextrose prolotherapy for dislocation or subluxation (hypermobility) of the temporomandibular joint (TMJ). Sixty-one patients with symptomatic hypermobility of the TMJ were included in this single-arm prospective study, in which they were each given four sessions of intra-articular and pericapsular injections six weeks apart. Each injection comprised 10% dextrose/mepivacaine solution 3ml. Clinical outcomes including severity of pain on movement according to the numerical rating scale (NRS), maximal interincisal opening, clicking, and frequency of locking were measured before treatment (T1), during treatment (T2) (just before the third session of injections), at the short-term follow-up (T3) (three months after treatment), and at the long-term follow-up (T4) (1-4 years after treatment)...
April 28, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28458938/septic-arthritis-of-the-temporomandibular-joint-secondary-to-acute-otitis-media-in-an-adult-a-rare-case-with-achromobacter-xylosoxidans
#19
Ryan Chin Taw Cheong, Laura Harding
Septic arthritis of the temporomandibular joint (SATMJ) is a rare complication of acute otitis media (AOM) with only four reported cases in the English and Japanese literature. Based on the unusual nature of this clinical condition, we discuss the first documented case due to Achromobacter xylosoxidans and the utility of myringotomy with long-term intravenous antibiotics via a peripherally inserted central catheter (PICC). We describe the case of a 76-year-old male patient that was brought in by ambulance to the accident and emergency (A&E) department due to severe right-sided otalgia with increased hearing impairment...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28457590/accuracy-of-maxillary-repositioning-by-computer-aided-orthognathic-surgery-in-patients-with-normal-temporomandibular-joints
#20
Xiaozhen Lin, Biao Li, Xudong Wang, Steve G F Shen
Our aim was to assess the accuracy of computer-aided orthognathic surgery for maxillary repositioning in 15 patients with mandibular hyperplasia and normal temporomandibular joints (TMJ). We aligned preoperative and postoperative virtual skulls at the cranium using surface superimposition then recorded and calibrated three 3-dimensional coordinates (maxillary dental landmarks U0, 6R, and 6L) on the skulls. Errors between these preoperative and postoperative landmarks were calculated and the largest error of every patient was chosen for assessment...
April 27, 2017: British Journal of Oral & Maxillofacial Surgery
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