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Temporomandibular disorders

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https://www.readbyqxmd.com/read/28730748/extracellular-signal-regulated-kinase-activation-in-the-spinal-cord-contributes-to-visceral-hypersensitivity-induced-by-craniofacial-injury-followed-by-stress
#1
Y-J Zhao, J-H Li, B Hu, Y Wang, X-F Chang, R J Traub, D-Y Cao
BACKGROUND: We previously developed an animal model to examine mechanisms that underlie the emergence of visceral hypersensitivity modeling pain characteristics of temporomandibular disorder (TMD) patients with comorbid irritable bowel syndrome (IBS). In ovariectomized (OVx) rats with estradiol (E2) replacement, visceral hypersensitivity developed subsequent to masseter muscle inflammation followed by repeated forced swim (FS) stress. The purpose of this study was to investigate whether activation of extracellular signal-regulated kinase (ERK) in the spinal cord contributes to visceral hypersensitivity in this overlapping pain model...
July 21, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28722246/delta-9-tetrahydrocannabinol-decreases-masticatory-muscle-sensitization-in-female-rats-through-peripheral-cannabinoid-receptor-activation
#2
H Wong, S Hossain, B E Cairns
BACKGROUND: This study investigated whether intramuscular injection of delta-9-tetrahydrocannabinol (THC), by acting on peripheral cannabinoid (CB) receptors, could decrease nerve growth factor (NGF)-induced sensitization in female rat masseter muscle; a model which mimics the symptoms of myofascial temporomandibular disorders. METHODS: Immunohistochemistry was used to explore the peripheral expression of cannabinoid receptors in the masseter muscle while behavioural and electrophysiology experiments were employed to assess the functional effects of intramuscular injection of THC...
July 18, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28717635/the-fabrication-of-a-customized-occlusal-splint-based-on-the-merging-of-dynamic-jaw-tracking-records-cone-beam-computed-tomography-and-cad-cam-digital-impression
#3
Katerina Aslanidou, Chung How Kau, Christos Vlachos, Tayem Abou Saleh
OBJECTIVES: The aim of this case report was to present the procedure of fabricating a customized occlusal splint, through a revolutionary software that combines cone beam computed tomography (CBCT) with jaw motion tracking (JMT) data and superimposes a digital impression. MATERIALS AND METHODS: The case report was conducted on a 46-year-old female patient diagnosed with the temporomandibular disorder. A CBCT scan and an optical impression were obtained. The range of the patient's mandibular movements was captured with a JMT device...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717293/utility-of-vaccum-pressed-silicon-sheet-as-a-bite-raising-appliance-in-the-management-of-tmj-dysfunction-syndrome
#4
Abhay Datarkar, Surendra Daware, Ravi Dande
INTRODUCTION: Temporomandibular disorders (TMDs) represent a group of painful conditions involving the muscles of mastication and the temporomandibular joint (TMJ) that frequently encountered in general clinical practice. This study is designed to assess the utility of vacuum pressed silicon sheet as a bite raising appliance in the management of TMJ dysfunction syndrome. METHODOLOGY: The patients for this study were selected from those with the chief complaint of TMJ disorder...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28714534/adjustable-thermoplastic-oral-appliance-versus-positive-airway-pressure-for-obstructive-sleep-apnea
#5
Wish Banhiran, Paraya Assanasen, Cherdchai Nopmaneejumrudlers, Nongyoaw Nujchanart, Wimontip Srechareon, Cheerasook Chongkolwatana, Choakchai Metheetrairut
OBJECTIVES/HYPOTHESIS: To compare outcomes of continuous positive airway pressure (CPAP) and the adjustable thermoplastic mandibular advancement splint (AT-MAS) for obstructive sleep apnea treatment. STUDY DESIGN: Randomized crossover, noninferiority, tertiary center setting. METHODS: Fifty patients with a mean age of 49.5 ± 10.6 years were enrolled. Inclusion criteria were age ≥18 years, apnea-hypopnea index (AHI) ≥5 events/hour, and oxygen saturation ≥70%...
July 17, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28714016/elastin%C3%A2-derived-peptides-are-involved-in-the-processes-of-human-temporomandibular-disorder-by-inducing-inflammatory-responses-in-synovial-cells
#6
Kazuhiko Kobayashi, Rei Jokaji, Mayuko Miyazawa-Hira, Shigeyuki Takatsuka, Akira Tanaka, Kazuhiro Ooi, Hiroyuki Nakamura, Shuichi Kawashiri
Temporomandibular joint dysfunction (TMD) is a collection of clinical symptoms that involve masticatory muscles and the temporomandibular joint (TMJ). Common symptoms include limited jaw motion and joint sound/pain, along with TMJ disc displacement. TMD is frequently associated with synovitis, a chronic inflammation of the synovium. Fibroblast‑like synovial cells have been identified to produce several inflammatory mediators and may have an important role in the progression of TMJ inflammation. Degradation of the extracellular matrix molecule elastin may lead to the release of bioactive peptides...
July 15, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713764/assessing-prevalence-of-temporomandibular-disorders-among-university-students-a-questionnaire-study
#7
R Karthik, M I Fathima Hafila, C Saravanan, N Vivek, P Priyadarsini, B Ashwath
AIM: The aim of this study is to assess the prevalence of temporomandibular disorders (TMDs) among university students. OBJECTIVES: The etiology of TMD is of multifactorial, and our study is designed to assess the prevalence of TMD in an institution within a university. Various parameters including trauma, malocclusion, stress assessment - its correlation with the timing, the duration of TMD in meeting the deadlines, and examinations have been assessed. MATERIALS AND METHODS: A standard questionnaire-based study with modified Fonseca anamnestic index is used...
June 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28712505/long-term-evaluation-of-single-puncture-temporomandibular-joint-arthrocentesis-in-patients-with-unilateral-temporomandibular-disorders
#8
M F Şentürk, D Yıldırım, E Bilgir, Y Fındık, T Baykul
The purpose of this study was to evaluate the long-term effects of the single-puncture arthrocentesis (SPA) technique. Forty-two patients with unilateral temporomandibular joint disorders (TMDs) were treated by SPA. Thirty-eight of these patients completed 1-24 months of follow-up (short-term group) and 21 completed 11 months or longer of follow-up (long-term group). The two groups were evaluated statistically for pain (visual analogue scale), maximum mouth opening, lateral excursion, and protrusion. Both follow-up duration groups showed significant improvements when compared to baseline levels for almost all of the outcome variables (P<0...
July 13, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28712174/arthrocentesis-for-temporomandibular-joint-pain-dysfunction-syndrome
#9
Shahid Rauf Jamot, Zafar Ali Khan, Tahir Ullah Khan, Riaz Ahmad Waraich, Muhammad Farooq
BACKGROUND: Temporomandibular joint (TMJ) dysfunction is painful condition of facial musculoskeletal system. Arthrocentesis is less invasive treatment of TMJ dysfunctions. It has been used to treat variety of TMJ disorders. The objective of this study was to determine the success of arthrocentesis in TMJPDS patients where conservative treatment had failed. METHODS: This descriptive case study of 45 patients was completed in 6 months at Outpatient Department of Oral and Maxillofacial Surgery, Mayo hospital Lahore...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28703117/early-diagnostics-of-temporomandibular-joint-structural-elements-injures-caused-by-traumatic-mandibular-bone-fractures
#10
Kh R Pohranychna, A R Stasyshyn, U D Matolych
A rapidly increasing number of mandibular condylar fractures and some complications related to injuries of temporomandibular elements make this study important. Intra-articular disorders lead to secondary pathological findings such as osteoarthritis, deforming osteoarthrosis, and temporomandibular joint ankylosis that limits mouth opening, mastication, swallowing, breathing, and decreased/lost working capacity or disability. Early diagnosis of intra-articular disorders can prevent from long-lasting functional complications caused by temporomandibular joint injuries...
June 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28693545/competence-profiles-in-undergraduate-dental-education-a-comparison-between-theory-and-reality
#11
Sebastiaan Koole, Shani Van Den Brulle, Véronique Christiaens, Wolfgang Jacquet, Jan Cosyn, Hugo De Bruyn
BACKGROUND: Competence profiles are purposed to provide a blueprint in support to develop and/or benchmark the learning outcomes of undergraduate dental curricula. This study aims to investigate whether a competence profile as proposed by academic- and clinical experts is able to represent the real clinical reality. METHODS: A questionnaire was developed including questions about gender and age, perception about required competences, and educational organisation and was distributed among Flemish dentists via email and on paper during a symposium...
July 11, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28692514/application-of-bidirectional-distraction-osteogenesis-for-the-treatment-of-mandibular-micriognathia-caused-by-temporomandibular-joint-ankylosis
#12
Chi Zhang, Yunfeng Li, Bin Ye, Yao Liu, Chongyun Bao, Songsong Zhu
BACKGROUND: Temporomandibular joint (TMJ) ankylosis is a joint disorder that refers to bone or fibrous adhesion of the anatomic joint components and the ensuing loss of function. When it happens on children, it is always accompanied by dentofacial deformities. The objective of this study was to describe the authors' experience of bidirectional distraction osteogenesis for the treatment of mandibular deformities caused by TMJ ankylosis. METHODS: Sixteen patients with TMJ ankylosis and severe secondary mandibular deformities were treated with bidirectional distraction osteogenesis and release of joint from January 2013 to December 2015...
July 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28691465/bilateral-coronoid-hyperplasia-a-report-of-six-cases
#13
M Romano, G Porcellini, D Rossi, A Bolzoni, A B Giannì, F J Silvestre, A Baj
Bilateral coronoid process hyperplasia is a rare condition defined as an abnormal elongation of the mandibular coronoid process, formed of histologically normal bone. Coronoid process hyperplasia usually develops progressively, and the clinical symptoms are often similar to those of temporomandibular joint disorders (TMD). Therefore, it is often misdiagnosed as TMD initially. From 2013 to 2016, six patients were referred to our maxillofacial surgery unit by their dentist, to evaluate mouth opening with suspected TMJ disorder...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28690356/diagnostic-index-an-open-source-tool-to-classify-tmj-oa-condyles
#14
Beatriz Paniagua, Laura Pascal, Juan Prieto, Jean Baptiste Vimort, Liliane Gomes, Marilia Yatabe, Antonio Carlos Ruellas, Francois Budin, Steve Pieper, Martin Styner, Erika Benavides, Lucia Cevidanes
Osteoarthritis (OA) of temporomandibular joints (TMJ) occurs in about 40% of the patients who present TMJ disorders. Despite its prevalence, OA diagnosis and treatment remain controversial since there are no clear symptoms of the disease, especially in early stages. Quantitative tools based on 3D imaging of the TMJ condyle have the potential to help characterize TMJ OA changes. The goals of the tools proposed in this study are to ultimately develop robust imaging markers for diagnosis and assessment of treatment efficacy...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28688272/does-pain-in-the-masseter-and-anterior-temporal-muscles-influence-maximal-bite-force
#15
Marcelo Coelho Goiato, Paulo Renato Junqueira Zuim, Amália Moreno, Daniela Micheline Dos Santos, Emily Vivianne Freitas da Silva, Fernanda Pereira de Caxias, Karina Helga Leal Turcio
OBJECTIVE: The aim of this study was to evaluate changes in pain and muscle force, and the relationship between them, in patients with muscle pain and bruxism, prior to and after treatment. METHODS: Thirty women with bruxism and myofascial pain (Ia) were included in this study. Sleep bruxism diagnosis was made based on clinical diagnostic criteria, and awake bruxism diagnosis was made by patient questionnaires and the presence of tooth wear. The diagnosis of myofascial pain was established according to the Research Diagnostic Criteria for Temporomandibular Disorders (RDC-TMD)...
June 23, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28688157/the-application-of-3-dimensional-printing-for-preoperative-planning-in-oral-and-maxillofacial-surgery-in-dogs-and-cats
#16
Jenna N Winer, Frank J M Verstraete, Derek D Cissell, Steven Lucero, Kyriacos A Athanasiou, Boaz Arzi
OBJECTIVE: To describe the application of 3-dimensional (3D) printing in advanced oral and maxillofacial surgery (OMFS) and to discuss the benefits of this modality in surgical planning, student and resident training, and client education. STUDY DESIGN: Retrospective case series. ANIMALS: Client-owned dogs (n = 28) and cats (n = 4) with 3D printing models of the skulls. METHODS: The medical records of 32 cases with 3D printing prior to major OMFS were reviewed...
July 8, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28687468/two-different-techniques-of-manufacturing-tmj-replacements-a-technical-report
#17
Marcin Kozakiewicz, Tomasz Wach, Piotr Szymor, Rafał Zieliński
INTRODUCTION: Presently, during the surgical treatment of the patients in maxillofacial surgery, one can use various medical implants. Moreover custom made implants are being used. Replacements may be fitted to the structure and shape of the human skull owing to CAD/CAM (custom aided design/manufacture) called customized implants. This study was aimed to report for the first time clinical material from which custom implants, using two different techniques, were manufactured to reconstruct the temporomandibular joint (TMJ)...
June 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28682279/temporomandibular-pain-caused-by-sleep-disorders-a-review-and-case-report
#18
Daniel F Babiec
Patients who present to the general dentist's office with complaints of temporomandibular joint pain may exhibit signs and symptoms such as muscle soreness, bruxism, joint soreness, limited range of movement, altered movement, and facial pain as well as tooth chipping or tooth movement. After examinations, radiographic evaluations, and a review of medical history, dentists may have a bias toward regarding these symptoms as oral or dental in origin. After a diagnosis of a temporomandibular disorder (TMD), bruxism, or muscular spasms due to occlusal instabilities is established, the treatment protocol often includes an oral appliance (such as a nightguard), exercises, and pharmacologic agents...
July 2017: General Dentistry
https://www.readbyqxmd.com/read/28681709/current-trends-in-disability-claims-due-to-fibromyalgia-syndrome
#19
REVIEW
Vittorio Schweiger, Giovanna Del Balzo, Dario Raniero, Domenico De Leo, Alvise Martini, Piercarlo Sarzi-Puttini, Enrico Polati
Fibromyalgia syndrome (FMS) affects 0.4-8% of the general population predominantly in the female population with a F:M ratio of 3-9:1. It is characterised by persistent widespread pain and other associated clinical conditions such as chronic fatigue, irritable bowel syndrome (IBS), temporomandibular joint dysfunction (TMJD), sleep disorders and cognitive impairment. FMS diagnosis at present is purely clinical because no medical or laboratory examinations are able to identify it with certainty. FMS is not fully recognised worldwide, and patients often do not receive the treatment and disability benefits planned for other chronic diseases even though it gives rise to a very significant social burden due to direct and indirect healthcare costs and the loss of productivity and work...
May 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28673836/microneedles-enhance-topical-delivery-of-15-deoxy-%C3%AE-12-14-prostaglandin-j2-and-reduce-nociception-in-temporomandibular-joint-of-rats
#20
Cristina G Macedo, Amit K Jain, Michelle FranzMontan, Marcelo H Napimoga, Juliana T Clemente-Napimoga, Harvinder Singh Gill
The pain arising from temporomandibular disorders is often treated with opioids and agents that inhibit the immune response and are associated with substantial adverse effects and long-term risks. Thus, the development of new therapies that are safer and more effective is of great interest to patients and clinicians. 15-deoxy-Δ(12,14)-prostaglandin J2 (15d-PGJ2) is naturally produced in the human body and has anti-inflammatory properties. We have previously shown in a rat temporomandibular joint (TMJ) model that injection of 15d-PGJ2 into the rat TMJ can provide antinociceptive relief against a subsequent noxious challenge from formalin injection into the same TMJ...
June 30, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
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