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TMJ disorders

Gregory J Wright, Matthew C Coombs, R Glenn Hepfer, Brooke J Damon, Thierry H Bacro, Michael K Lecholop, Elizabeth H Slate, Hai Yao
Approximately 30% of temporomandibular joint (TMJ) disorders include degenerative changes to the articular disc, with sex-specific differences in prevalence and severity. Limited tensile biomechanical properties of human TMJ discs have been reported. Stress relaxation tests were conducted on TMJ disc specimens harvested bilaterally from six males and six females (68.9±7.9 years), with step-strain increments of 5%, 10%, 15%, 20% and 30%, at 1% strain-per-second. Stress versus strain plots were constructed, and Young׳s Modulus, Instantaneous Modulus and Relaxed Modulus were determined...
October 6, 2016: Journal of Biomechanics
Hirotaka Muraoka, Takashi Kaneda, Yusuke Kawashima, Naohisa Hirahara, Taiga Fukuda, Teruaki Muramatsu, Kotaro Ito
PURPOSE: Lymphadenopathy often occurs in the setting of inflammation, with or without infection. We sought to elucidate any association of parotid lymphadenopathy with joint effusion in temporomandibular joint (TMJ) disorders. MATERIALS AND METHODS: We performed a retrospective cohort study. We analyzed the magnetic resonance imaging studies of patients with suspected TMJ disorders performed from April 2006 to March 2007. The degree of joint effusion was graded on sagittal T2-weighted spin echo images according to a commonly used system...
September 17, 2016: Journal of Oral and Maxillofacial Surgery
Gaetano Isola, Luca Ramaglia, Giancarlo Cordasco, Alessandra Lucchese, Luca Fiorillo, Giovanni Matarese
BACKGROUND: Patients affected by Juvenile Idiopathic Arthritis (JIA) may have several craniofacial growth disturbances and involvements at the temporomandibular joint (TMJ). The objectives of the present study were to evaluate the clinical effectiveness of functional therapy used to reduce asymmetry of mandibular growth and TMJ disorder in patients with JIA. METHODS: By a retrospective longitudinal design, a cohort of 54 patients with JIA (mean age, 13.2 ± 3.7 years; range, 5-17...
September 13, 2016: Minerva Stomatologica
Poornima Patel, Faisal Idrees, Vilas Newaskar, Deepak Agrawal
BACKGROUND: Internal derangement of the temporomandibular joint (TMJ) is one of the most common forms of temporomandibular disorders. The minimally invasive treatments such as arthrocentesis as well as arthroscopic lysis and lavage are often used as a first-line surgical treatment or in conjunction with nonsurgical modalities with low morbidity and high efficacy. Sodium hyaluronate (SH) has been proposed as an alternative therapeutic agent with similar therapeutic effects. OBJECTIVE: A prospective study was carried out for evaluation of efficacy of TMJ arthrocentesis with and without injection of SH in management of internal derangements...
October 6, 2016: Oral and Maxillofacial Surgery
Ashkan Aryaei, Natalia Vapniarsky, Jerry C Hu, Kyriacos A Athanasiou
Temporomandibular disorders (TMDs) are among the most common maxillofacial complaints and a major cause of orofacial pain. Although current treatments provide short- and long-term relief, alternative tissue engineering solutions are in great demand. Particularly, the development of strategies, providing long-term resolution of TMD to help patients regain normal function, is a high priority. An absolute prerequisite of tissue engineering is to understand normal structure and function. The current knowledge of anatomical, mechanical, and biochemical characteristics of the temporomandibular joint (TMJ) and associated tissues will be discussed, followed by a brief description of current TMD treatments...
October 4, 2016: Current Osteoporosis Reports
Alp Saruhanoğlu, Bilge Gökçen-Röhlig, Ceren Saruhanoğlu, Değer Öngül, Meltem Koray
OBJECTIVE: The current study aimed to investigate the frequency of signs and symptoms of temporomandibular disorders (TMD) among call center employees. METHODS: Workers from four call centers (CC) were invited to participate in this study. The examination was based on the Research Diagnostic Criteria for Temporomandibular Disorder (RDC/TMD). The tenderness of the masticator muscles was assessed on both sides by bilateral palpation. The mobility of the mandible was measured with a plastic millimeter ruler on opening, lateral excursions, and protrusion...
August 16, 2016: Cranio: the Journal of Craniomandibular Practice
Shehryar N Khawaja, Heidi Crow, Ruba F G Mahmoud, Krishnan Kartha, Yoly Gonzalez
PURPOSE: The literature on joint effusion (JE) and its association with clinical and radiologic variables in patients with temporomandibular disorders (TMDs) is inconsistent and is characterized by multiple methodologic limitations. The primary aim of this investigation was to evaluate the association between magnetic resonance imaging (MRI) identified JE and temporomandibular joint (TMJ) arthralgia. The secondary aim of this investigation was to determine the association between JE and other clinical and MRI-identified soft tissue characteristics...
August 29, 2016: Journal of Oral and Maxillofacial Surgery
Hadeel Al-Shwaikh, Ilga Urtane, Pertti Pirttiniemi, Paula Pesonen, Zane Krisjane, Iveta Jankovska, Zane Davidsone, Valda Stanevica
INTRODUCTION: Patients with juvenile idiopathic arthritis (JIA) have a high risk of temporomandibular joint (TMJ) involvement. Lesions in the TMJ appear early in the course of this disease. Evaluating the structure of the TMJ in JIA patients using cone beam computed tomography (CBCT) provides an understanding of the typical radiologic features of morphological change in TMJs of JIA patients. This study aims to report these features as seen in CBCT and thus comparing them with the features observed in a control group within the same age group and in females and males...
2016: Stomatologija
Marijus Leketas, Evelina Vedlugaitė, Ričardas Kubilius
OBJECTIVES: To investigate which treatment of maxillofacial fractures is more effective and what type of complications is the most common after observed treatment. The second aim is to explore relationship between treated facial bone fractures and temporomandibular joint (TMJ) pathology. MATERIAL AND METHODS: Cases with TMJ pathology in Lithuanian University of Health Sciences (LUHS) in the Department of Maxillofacial Surgery (MS) during 2012-2014 were analysed to research the occurrence of TMJ disorders after facial bone fracture treatment...
2016: Stomatologija
Luca Guarda-Nardini, Cristina Cadorin, Antonio Frizziero, Stefano Masiero, Daniele Manfredini
OBJECTIVE: The aim of this study was to evaluate cervical spine pain and function after five sessions of viscosupplementation with hyaluronic acid (HA) in patients with temporomandibular joint (TMJ) osteoarthritis. METHODS: Forty-nine patients, (79% females, aged between 43-81 years), affected by TMJ osteoarthritis and concurrent cervical spine pain and limited function were recruited. All patients underwent a cycle of five weekly arthrocenteses and viscosupplementation with 1 ml of medium molecular weight HA according to the single-needle arthrocentesis technique...
September 16, 2016: Cranio: the Journal of Craniomandibular Practice
Zdzisław A Bogucki, Mariola Kownacka
The purpose of this work is to present a new, still experimental method of treating temporomandibular disorders (TMD) by injecting botulinum toxin Type A (TBX-A), using its effects not as a toxin but as a medication. The mechanism of TBX-A, indications and contraindications for its use, as well as possible side effects, are discussed. Temporomandibular disorders are of concern to approximately 70-80% of the population. The effect of botulinum toxin depends on blocking the release of acetylcholine from a presynaptic neuromuscular synapse and, in the autonomous system, blocking its release from post-ganglionic cholinergic neurons...
May 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Qian-Qian Gao, Yuan-Yong Feng, Ling-Xue Bu, Kai Song, Xin Dai, Wei Shang
Pigmented villonodular synovitis (PVNS) is a benign, proliferative disorder of synovium. It often affects the knee, and rarely occurs in the temporomandibular joint (TMJ). This paper reported a 45-year-old male patient with PVNS of the TMJ, who was referred with a chief complaint of slowly growing and painless preauricular mass that was noticed about 1 year. Radical excision and follow-up were conducted, no recurrence and metastasis were noted.
June 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
Wenna Liang, Xihai Li, Houhuang Chen, Xiang Shao, Xuejuan Lin, Jianying Shen, Shanshan Ding, Jie Kang, Candong Li
The temporomandibular joint (TMJ), a unique synovial joint whose development differs from that of other synovial joints, develops from two distinct mesenchymal condensations that grow toward each other and ossify through different mechanisms. The short stature homeobox 2 (Shox2) gene serves an important role in TMJ development and previous studies have demonstrated that Shox2SHOX KI/KI mice display a TMJ defective phenotype, congenital dysplasia and premature eroding of the articular disc, which is clinically defined as a TMJ disorder...
October 2016: Molecular Medicine Reports
Jose A Lopez-Escamez, Thanos Bibas, Rilana F F Cima, Paul Van de Heyning, Marlies Knipper, Birgit Mazurek, Agnieszka J Szczepek, Christopher R Cederroth
Subjective tinnitus is the perception of sound in the absence of external or bodily-generated sounds. Chronic tinnitus is a highly prevalent condition affecting over 70 million people in Europe. A wide variety of comorbidities, including hearing loss, psychiatric disorders, neurodegenerative disorders, and temporomandibular joint (TMJ) dysfunction, have been suggested to contribute to the onset or progression of tinnitus; however, the precise molecular mechanisms of tinnitus are not well understood and the contribution of genetic and epigenetic factors remains unknown...
2016: Frontiers in Neuroscience
Jae Young Jang, Jeong Seung Kwon, Debora H Lee, Jung Hee Bae, Seong Taek Kim
PURPOSE: Most of the reports on instrumentalists' experiences of temporomandibular disorders (TMD) have been reported not by clinical examinations but by subjective questionnaires. The aim of this study was to investigate the clinical signs and subjective symptoms of TMD in a large number of instrumentalists objectively. MATERIALS AND METHODS: A total of 739 musicians from a diverse range of instrument groups completed a TMD questionnaire. Among those who reported at least one symptom of TMD, 71 volunteers underwent clinical examinations and radiography for diag-nosis...
November 2016: Yonsei Medical Journal
J Ferri, G Raoul, J Potier, R Nicot
The mandibular condyle is a special structure. Its embryology and physiology provide to the TMJ a particular behavior that explains the occurrence of specific diseases. Condyle hyperplasia is one of these disorders. It can be explained by a dysregulation of the prechondroblast cell layer within the cartilage cap providing an increase in volume first of the condyle, then of the ramus and finally of the entire affected hemiface. Mandible deformation affects the basal bone, leading to dento-alveolar deformations related to compensation attempts...
September 2016: Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale
Salih Onur Basat, Mehmet Surmeli, Oguzhan Demirel, Fatih Ceran, Funda Akoz Saydam, Karaca Basaran
Temporomandibular joint disorders (TMJDs) are a complex group of disorders that comprise dysfunctions of the temporomandibular joint (TMJ). In this study, we analyzed the objective and subjective findings of the TMJD patients by using Helkimo anamnesis (Ai) and clinical dysfunction (Di) indices, and tried to document a relation between these findings and magnetic resonance imaging (MRI) results.Ninety-eight patients who were admitted to our clinic were included in the study. The clinical evaluation was performed by using Ai, an 8-question-survey based on the objective symptoms of patients; Di, concluded as the score of 5 objective measurements of physical examination...
August 24, 2016: Journal of Craniofacial Surgery
Silvia Naomi Mitsui, Akihiro Yasue, Shingo Kuroda, Eiji Tanaka
This article reports the orthodontic treatment of a 20-year-old patient with dental crowding and temporomandibular joint disorders (TMDs). The patient presented moderate anterior crowding with a Class I molar relationship and masticatory disturbance in the mandibular position induced by previous splint therapy. Orthodontic treatment with multi-bracket appliance was initiated to correct the anterior crowding in both dental arches, after the extraction of first premolars and third molars, and also to maintain the splint-induced position of the condyles...
July 2016: Journal of Orthodontic Science
F Cheynet
The study of the relationship between temporomandibular joints (TMJ), mastication and ventilation and the involvement of these two functions in the genesis of primary Temporomandibular Disorders (TMD) and in some dentofacial deformities, was initiated in France, more than 30years, by Professor Raymond Gola. Once criticized the weakness of the scientific literature in this domain, the originality of the TMJ within the masticatory system is recalled with its huge adaptation potential to very different biomechanical constraints according to the age and masticatory activities during the day...
September 2016: Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale
J Gagé, A Gallucci, M Arnaud, C Chossegros, J M Foletti
INTRODUCTION: Temporomandibular disorders (TMDs) affect the masticatory muscles and the temporomandibular joints (TMJs). TMDs most often result from occlusal and/or muscular disorders and are then called primary or idiopathic TMDs. Less frequently, TMDs are related to local (trauma, infection) or general (rheumatoid arthritis) causes and are then called secondary TMDs. A little known iatrogenic cause of secondary TDM is the osteoarthritis that may be induced by intra-articular cortisone injections...
September 2016: Revue de Stomatologie, de Chirurgie Maxillo-faciale et de Chirurgie Orale
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