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Temporal mandibular joint

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https://www.readbyqxmd.com/read/28420009/temporal-summation-and-motor-function-modulation-during-repeated-jaw-movements-in-patients-with-temporomandibular-disorder-pain-and-healthy-controls
#1
Yuanxiu Zhang, Sheng Shao, Jinglu Zhang, Lin Wang, Kelun Wang, Peter Svensson
Temporal summation of nociceptive inputs may be an important pathophysiological mechanism in temporomandibular disorders (TMD) pain; however, it remains unknown how natural jaw function relates to underlying pain mechanisms. This study evaluated changes in pain and movement patterns during repeated jaw movements in patients with painful temporomandibular joints (TMJ) compared with healthy controls. Twenty patients with TMD with TMJ pain, and an anterior disk displacement without reduction and 20 age- and gender-matched healthy volunteers were included...
March 31, 2017: Pain
https://www.readbyqxmd.com/read/28326983/morphologic-and-morphometric-description-of-the-temporomandibular-joint-in-the-domestic-dog-using-computed-tomography
#2
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/28149814/an-unusual-finding-of-the-auriculotemporal-nerve-possible-risk-factor-during-preauricular-skin-incisions
#3
Joe Iwanaga, Samuel L Bobek, Christian Fisahn, Ken Nakamura, Yoshihiro Miyazono, R Shane Tubbs
The auriculotemporal nerve (ATN) is a branch of the mandibular nerve and has been implicated for some migraines and its role in Frey's syndrome is well known. An adult cadaver was found to have a duplicated ATN. The anterior trunk ascended as the superficial temporal artery and gave off the branches to the temporomandibular joint, parotid gland, external acoustic meatus and temporal region and communicated with a posterior trunk of the ATN. The posterior trunk ascended via the subcutaneous tissues 1 mm anterior to the auricle and gave off the branches to the anterior auricular region, temporal region and communicated with the anterior trunk...
December 2016: Gland Surgery
https://www.readbyqxmd.com/read/28034533/audiological-features-in-congenital-bony-atresia-of-external-auditory-canal-with-temporal-mandibular-joint-retroposition
#4
Ran Ren, Shouqin Zhao, Danni Wang, Lin Yang, Zhonglin Liu, Ying Li, Chenyi Wei
OBJECTIVES: To facilitate the diagnosis, treatment and surgical options for congenital bony atresia of external auditory canal (EAC) with temporal-mandibular joint (TMJ) retroposition by analyzing its audiological features and the morphology of temporal bone on CT scan. MATERIALS AND METHODS: Two cohorts of patients with congenital EAC bony atresia with (n=23) or without (n=21) TMJ retroposition were recruited from September 2012 to July 2014 at Beijing Tongren Hospital, Capital Medical University...
March 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/27957273/electromyographic-biofeedback-training-for-reducing-muscle-pain-and-tension-on-masseter-and-temporal-muscles-a-pilot-study
#5
Laura Criado, Antonio de La Fuente, Margarita Heredia, Javier Montero, Alberto Albaladejo, José-María Criado
BACKGROUND: Due to the absence of agreement about an effective unified treatment for temporomandibular disorders, non-invasive therapies such as EMG-biofeedback generate a greater interest. Furthermore, most studies to the present show methodological deficiencies that must be solved in the future, which makes important to emphasize this line of studies. MATERIAL AND METHODS: Fourteen patients were selected for this case series study, and replied to a questionnaire concerning awareness of bruxism, painful muscles, and muscle tension...
December 2016: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/27855674/disk-displacement-eccentric-condylar-position-osteoarthrosis-misnomers-for-variations-of-normality-results-and-interpretations-from-an-mri-study-in-two-age-cohorts
#6
Jens C Türp, Anna Schlenker, Johannes Schröder, Marco Essig, Marc Schmitter
BACKGROUND: Clinical decision-making and prognostic statements in individuals with manifest or suspected temporomandibular disorders (TMDs) may involve assessment of (a) the position of articular disc relative to the mandibular condyle, (b) the location of the condyle relative to the temporal joint surfaces, and (c) the depth of the glenoid fossa of the temporomandibular joints (TMJs). The aim of this study was twofold: (1) Determination of the prevalence of these variables in two representative population-based birth cohorts...
November 17, 2016: BMC Oral Health
https://www.readbyqxmd.com/read/27566458/total-alloplastic-joint-reconstruction-in-a-patient-with-temporomandibular-joint-ankylosis-following-condylar-dislocation-into-the-middle-cranial-fossa
#7
Ephraim R Rikhotso, Muhammad A Bobat
PURPOSE: Traumatic dislocation of the mandibular condyle into the middle cranial fossa is an extremely rare complication of maxillofacial injury. Management case of the of dislocation of the mandibular condyle complicated by bilateral temporomandibular joint ankylosis is presented. MATERIALS AND METHODS: A 17year old male patient presented to the outpatient clinic complaining of inability to open his mouth following a motor vehicle accident 6 months prior. Examination revealed bilateral TMJ ankylosis following left condylar head fracture and dislocation of the right condylar head into the middle cranial fossa...
December 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27504269/incidence-of-foramen-of-huschke-in-south-andhra-population-of-india
#8
P Sharmila Bhanu, K Devi Sankar
INTRODUCTION: Foramen of Huschke (FH) is an opening present in anteroinferior wall of External Acoustic Meatus (EAM) on the tympanic plate of temporal bone. The developing tympanic ring normally gets closed by the age of 5 years, if not, leads to the persistence of FH, shows a communication between the EAM and mandibular fossa of temporal bone. AIM: The aim of the present study was to report on the incidence of FH in adult skulls and individual temporal bones, belonging to South Coastal Andhra population...
June 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27499209/dynamic-contrast-enhanced-mri-detects-acute-radiotherapy-induced-alterations-in-mandibular-microvasculature-prospective-assessment-of-imaging-biomarkers-of-normal-tissue-injury
#9
(no author information available yet)
Normal tissue toxicity is an important consideration in the continued development of more effective external beam radiotherapy (EBRT) regimens for head and neck tumors. The ability to detect EBRT-induced changes in mandibular bone vascularity represents a crucial step in decreasing potential toxicity. To date, no imaging modality has been shown to detect changes in bone vascularity in real time during treatment. Based on our institutional experience with multi-parametric MRI, we hypothesized that DCE-MRI can provide in-treatment information regarding EBRT-induced changes in mandibular vascularity...
August 8, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27429562/a-systematic-review-of-dextrose-prolotherapy-for-chronic-musculoskeletal-pain
#10
REVIEW
Ross A Hauser, Johanna B Lackner, Danielle Steilen-Matias, David K Harris
OBJECTIVE: The aim of this study was to systematically review dextrose (d-glucose) prolotherapy efficacy in the treatment of chronic musculoskeletal pain. DATA SOURCES: Electronic databases PubMed, Healthline, OmniMedicalSearch, Medscape, and EMBASE were searched from 1990 to January 2016. STUDY SELECTION: Prospectively designed studies that used dextrose as the sole active prolotherapy constituent were selected. DATA EXTRACTION: Two independent reviewers rated studies for quality of evidence using the Physiotherapy Evidence Database assessment scale for randomized controlled trials (RCTs) and the Downs and Black evaluation tool for non-RCTs, for level of evidence using a modified Sackett scale, and for clinically relevant pain score difference using minimal clinically important change criteria...
2016: Clinical Medicine Insights. Arthritis and Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27411661/modified-endaural-approach-for-the-treatment-of-condylar-fractures-a-review-of-75-cases
#11
S M Balaji
BACKGROUND: There are several treatment approaches for mandibular condyle fractures. Type of fracture, clinical experience, and preference of the operating surgeon dictate the approach. Given this highly varied outcome, this manuscript intends to document the treatment experience of 75 patients with extracapsular condyle fractures using author's modification of the traditional endaural approach in the region. MATERIALS AND METHODS: A retrospective chart review was performed on patients with mandibular condylar fractures who visited the author's center between 2004 and 2014...
May 2016: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/27408471/a-conservative-surgical-approach-in-the-management-of-longstanding-chronic-protracted-temporomandibular-joint-dislocation-a-case-report-and-review-of-literature
#12
Priya Jeyaraj, Ashish Chakranarayan
Chronic protracted dislocation of the TMJ is a relatively uncommon but extremely unpleasant and distressing condition for a patient. It is also particularly challenging and difficult to treat as it worsens with time due to continuing spasm of the masticatory muscles and progressive fibrosis, adhesions and consolidation in and around the dislocated joint. No definite guidelines or treatment protocols have been laid down in literature till date, towards management of such dislocations. A range of extensive and invasive surgical procedures such as eminectomy, condylectomy, menisectomy, and various osteotomies of the mandibular ramus and body have been performed to reduce these dislocations...
July 2016: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/27347473/pneumatization-of-the-zygomatic-process-of-temporal-bone-on-computed-tomograms
#13
Reinhard E Friedrich, Liska Viezens, Ulrich Grzyska
PURPOSE: Zygomatic air cells (ZAC) are a variant of temporal bone pneumatization that needs no treatment. However, ZAC can have an impact on surgical procedures in the temporo-mandibular joint region. Recent reports suggest that computed tomography will disclose more ZAC than can be diagnosed on panoramic radiography. The aim of this study was to analyze ZAC prevalence on CT in a population that was not pre-selected by admission to a dental clinic. Furthermore, an extensive literature review was performed to assess the prevalence of ZAC and to address the impact of imaging technique on the definition of the item...
2016: GMS Interdisciplinary Plastic and Reconstructive Surgery DGPW
https://www.readbyqxmd.com/read/27324400/angioarchitecture-and-morphology-of-temporomandibular-joint-of-monodelphis-domestica
#14
Matheus Silvestre Minucci, João Paulo Mardegan Issa, Fernando Yukio Yokoyama, Fernando José Dias, Daniela Mizusaki Iyomasa, Elaine Aparecida Del-Bel Belluz Guimarães, Ii-Sei Watanabe, Mamie Mizusaki Iyomasa
The opossum Monodelphis domestica presents movement of the temporomandibular joint (TMJ) reflecting adaptation to eating habits similar to movement in humans, but the structure of the TMJ is not yet known. Thus, nine young M. domestica, of both sexes were weighed, anesthetized with xylazine (10 mg kg(-1) ), and ketamine (70 mg kg(-1) ) and processed for: 1. The analyses of the macroscopic angioarchitecture after latex injection, as well as the topography of the TMJ; 2. The analysis of microvascularization after injection of Mercox resin and corrosion of soft tissue with NaOH using scanning electron microscopy and; 3...
September 2016: Microscopy Research and Technique
https://www.readbyqxmd.com/read/27315306/overexpression-of-dlx2%C3%A2-leads-to-postnatal-condyle-degradation
#15
Jiewen Dai, Jiawen Si, Xiaofang Zhu, Lei Zhang, Dandan Wu, Jingting Lu, Ningjuan Ouyang, Xudong Wang, Guofang Shen
Distal-less homeobox 2 (Dlx2), a member of the Dlx family of transcription factors, is important for the development of craniofacial tissues. Previous studies based on knock‑out mutant mice revealed that Dlx2 primarily disturbed the development of tissues from maxillary arch. The present study used a transgenic mouse model to specifically overexpress Dlx2 in neural crest cells in order to investigate the role of Dlx2 overexpression in post‑natal condyle in mice. The model was constructed and the phenotype observed using gross observation, micro‑CT scan and histological examination...
August 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27207395/superolateral-dislocation-of-an-intact-mandibular-condyle-into-the-temporal-fossa-case-report-and-literature-review
#16
Divashree Sharma, Ankit Khasgiwala, Bharat Maheshwari, Charanpreet Singh, Neelam Shakya
Temporomandibular joint dislocation refers to the dislodgement of mandibular condyle from the glenoid fossa. Anterior and anteromedial dislocations of the mandibular condyle are frequently reported in the literature, but superolateral dislocation is a rare presentation. This report outlines a case of superolateral dislocation of an intact mandibular condyle that occurred in conjunction with an ipsilateral mandibular parasymphysis fracture. A review of the clinical features of superolateral dislocation of the mandibular condyle and the possible techniques of its reduction ranging from the most conservative means to extensive surgical interventions is presented...
February 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27151729/pulsatile-tinnitus-caused-by-a-dilated-left-petrosquamosal-sinus
#17
Dragoş Cătălin Jianu, Silviana Nina Jianu, Traian Flavius Dan, Andrei Gheorghe Marius Motoc, Mărioara Poenaru
The emissary veins, like the petrosquamosal sinus (PSS), are residual valveless veins, which connect the intracranial dural venous sinuses and the extracranial venous system. Rarely, they may cause pulsatile tinnitus (PT). A 22-year-old woman developed in the first week of puerperium worsening headaches, vomiting, and diplopia, and the accentuation of a PT in the left ear that she presented for eight years. The clinical examination findings nine days after delivery were unremarkable, with the exception of a left sixth nerve palsy, and a peculiar sensibility of the left temporo-mandibular joint...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27151706/etiological-factors-associated-with-temporomandibular-joint-disorder-study-on-animal-model
#18
Andrea Maria Chisnoiu, Radu Chisnoiu, Marioara Moldovan, Liana Maria Lascu, Alina Monica Picoş
The etiology of temporomandibular disorder (TMD) is multidimensional: biomechanical, neuromuscular, bio-psychosocial and biological factors may contribute to the disorder. The main objectives of our study were investigation and analysis of the degree of involvement for several presumptive etiological factors of TMD: biomechanical stress (BS), estrogen hormones (EH) and emotional stress (ES). Six groups (n=10) of mature female Wistar rats were included in the study. Single presumptive etiological factor was applied in three groups (BS, EH and ES groups) and also association of presumptive etiological factors were applied in two groups (BSEH and BSES groups)...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27135077/retromandibular-transparotid-approach-to-mandibular-subcondylar-and-high-ramus-fractures-two-point-fixation
#19
Cem Aslan, Mubin Hoşnuter, Soysal Baş, Osman Tan, Dağhan Işık, Mustafa Durgun
BACKGROUND: Although the fractures of the mandibular condylar region are very common, the controversies about the treatment of this area is still ongoing. In recent years, general agreement has emerged that open treatment is more effective than closed approaches for extracapsular condylar fractures. However, this time, the method of surgical approach has become controversial. The aim of this study was to evaluate the effectiveness of the retromandibular transparotid approach for the fixation of subcondylar/high ramus mandible fractures...
January 2016: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/27131251/influence-of-tnf-%C3%AE-308%C3%A2-g-a-gene-polymorphism-on-temporomandibular-disorder
#20
Bruno D'Aurea Furquim, Lívia Maria Sales Pinto Flamengui, Carlos Eduardo Palanch Repeke, Franco Cavalla, Gustavo Pompermaier Garlet, Paulo César Rodrigues Conti
INTRODUCTION: Tumor necrosis factor alpha (TNF-α) levels are significantly upregulated in the synovial fluid of patients with temporomandibular joint disorder (TMD). The TNF-α influences pain generation and maintenance. Therefore, the aim of this study was to investigate the influence of single nucleotide polymorphism TNFA-308 (rs1800629) on TMD risk and on the pressure pain threshold. METHODS: The genotypic and allelic frequencies of candidate single nucleotide polymorphisms were compared among 152 TMD patients and 91 sex- and age-matched healthy subjects in the control group using the real-time polymerase chain reaction technique...
May 2016: American Journal of Orthodontics and Dentofacial Orthopedics
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