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Temporomandibular joint

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https://www.readbyqxmd.com/read/28087283/benefits-of-using-the-ultrasonic-bonescalpel%C3%A2-in-temporomandibular-joint-reconstruction
#1
Rebeka Silva, Rishi Gupta, Gianluca Tartaglia, Stephen Connelly
PURPOSE: The main objective of this retrospective study is to analyze and report on our operative experiences and outcomes using the ultrasonic BoneScalpel™ (BoneScalpel) versus a conventional reciprocating saw (RecipSaw) for the purpose of completing the osteotomies in total temporomandibular joint reconstruction (TJR) surgery. MATERIALS AND METHODS: 23 consecutive patients presented with a diagnosis of either degenerative joint disease (n = 23), a failing autogenous TJR (n = 1), heterotrophic bone formation (n = 1) or a subcondylar fracture (n = 1) for a total of 26 joints that received a TJR...
December 19, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28081371/gwas-identifies-new-loci-for-painful-temporomandibular-disorder
#2
A E Sanders, D Jain, T Sofer, K F Kerr, C C Laurie, J R Shaffer, M L Marazita, L M Kaste, G D Slade, R B Fillingim, R Ohrbach, W Maixner, T Kocher, O Bernhardt, A Teumer, C Schwahn, K Sipilä, R Lähdesmäki, M Männikkö, P Pesonen, M Järvelin, C M Rizzatti-Barbosa, C B Meloto, M Ribeiro-Dasilva, L Diatchenko, P Serrano, S B Smith
Temporomandibular disorder (TMD) is a musculoskeletal condition characterized by pain and reduced function in the temporomandibular joint and/or associated masticatory musculature. Prevalence in the United States is 5% and twice as high among women as men. We conducted a discovery genome-wide association study (GWAS) of TMD in 10,153 participants (769 cases, 9,384 controls) of the US Hispanic Community Health Study/Study of Latinos (HCHS/SOL). The most promising single-nucleotide polymorphisms (SNPs) were tested in meta-analysis of 4 independent cohorts...
January 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28078198/multidisciplinary-approach-to-management-of-temporal-bone-giant-cell-tumor
#3
Taija K Nicoli, Riste Saat, Risto Kontio, Anna Piippo, Maija Tarkkanen, Jussi Tarkkanen, Jussi Jero
Background Giant cell tumors (GCTs) are rare osseous tumors that rarely appear in the skull. Methods We review the clinical course of a 28-year-old previously healthy woman with a complicated GCT. Results The reviewed patient presented with a middle cranial fossa tumor acutely complicated by reactive mastoiditis. Left tympanomastoidectomy was performed for drainage of the mastoiditis and for biopsies of the tumor. Due to the challenging tumor location, the patient was treated with denosumab, a fully humanized monoclonal antibody against receptor activator of nuclear factor kappa-B ligand, for 7 months, which resulted in significant preoperative tumor shrinkage...
July 2016: Journal of Neurological Surgery Reports
https://www.readbyqxmd.com/read/28072990/-the-images-of-osteoarthrosis-associated-with-anterior-disc-displacement-without-reduction-detected-by-cone-beam-ct
#4
J H Han, J Lei, M Q Liu, K Y Fu
Objective: To analyze the radiological characteristics of the condylar bone in patients with anterior disc displacement without reduction of temporomandibular joint using cone-beam CT (CBCT), and to further investigate the clinical factors possibly associated with the early-stage osteoarthritic changes. Methods: Two hundred and four individuals (≤30 years old) diagnosed as unilateral anterior disc displacement without reduction (disease duration≤1 year) were recruited. CBCT images of bilateral condyles were independently evaluated by two assessors and documented...
January 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28069164/ex-vivo-thickness-measurement-of-cartilage-covering-the-temporomandibular-joint
#5
Fereshteh Mirahmadi, Jan Harm Koolstra, Frank Lobbezoo, G Harry van Lenthe, Vincent Everts
Articular cartilage covers the temporomandibular joint (TMJ) and provides smooth and nearly frictionless articulation while distributing mechanical loads to the subchondral bone. The thickness of the cartilage is considered to be an indicator of the stage of development, maturation, aging, loading history, and disease. The aim of our study was to develop a method for ex vivo assessment of the thickness of the cartilage that covers the TMJ and to compare that with two other existing methods. Eight porcine TMJ condyles were used to measure cartilage thickness...
December 19, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/28068790/temporomandibular-disorders-old-ideas-and-new-concepts
#6
Thomas List, Rigmor Højland Jensen
Background Temporomandibular disorders (TMD) is an umbrella term for pain and dysfunction involving the masticatory muscles and the temporomandibular joints (TMJs). TMD is the most common orofacial pain condition. Its prominent features include regional pain in the face and preauricular area, limitations in jaw movement, and noise from the TMJs during jaw movements. TMD affects up to 15% of adults and 7% of adolescents. Chronic pain is the overwhelming reason that patients with TMD seek treatment. TMD can associate with impaired general health, depression, and other psychological disabilities, and may affect the quality of life of the patient...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28065754/mechanisms-involved-in-antinociception-induced-by-a-polysulfated-fraction-from-seaweed-gracilaria-cornea-in-the-temporomandibular-joint-of-rats
#7
Chistiane Oliveira Coura, Hellíada Vasconcelos Chaves, Danielle Rocha do Val, Lorena Vasconcelos Vieira, Felipe Dantas Silveira, Fernanda Maxcynne Lino Dos Santos Lopes, Francisco Isaac Fernandes Gomes, Annyta Fernandes Frota, Ricardo Basto Souza, Juliana Trindade Clemente-Napimoga, Mirna Marques Bezerra, Norma Maria Barros Benevides
Temporomandibular disorder is a common clinical condition involving pain in the temporomandibular joint (TMJ) region. This study assessed the antinociceptive effects of a polysulfated fraction from the red seaweed Gracilaria cornea (Gc-FI) on the formalin-induced TMJ hypernociception in rats and investigated the involvement of different mechanisms. Male Wistar rats were pretreated with injection (sc) of saline or Gc-FI 1h before intra- TMJ injection of formalin to evaluate the nociception. The results showed that pretreatment with Gc-FI significantly reduced formalin-induced nociceptive behavior...
January 5, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28064032/tmj-energy-densities-in-healthy-men-and-women
#8
L R Iwasaki, Y M Gonzalez, Y Liu, H Liu, M Markova, L M Gallo, J C Nickel
OBJECTIVE: Cartilage fatigue, due to mechanical work, may account for the early development of degenerative joint disease in the temporomandibular joint (TMJ), and why women are 3-times more likely to be afflicted. This study tested for gender differences in mechanical energy densities in women and men with healthy TMJs. DESIGN: Eighteen women and eighteen men gave informed consent. Research diagnostic criteria including imaging were used to ensure that subjects' TMJs were normal, without disc displacement or signs of degenerative joint disease...
January 4, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28064031/frequency-of-temporomandibular-osteoarthritis-and-related-symptoms-in-a-hand-osteoarthritis-cohort
#9
Anna-Karin Abrahamsson, Margareth Kristensen, Linda Z Arvidsson, Tore K Kvien, Tore A Larheim, Ida K Haugen
OBJECTIVE: The prevalence of osteoarthritis (OA) in the temporomandibular joints (TMJs) in hand OA patients is largely unknown. Our aims were to explore 1) The frequency of TMJ-related symptoms and clinical findings; 2) The TMJ OA frequency defined by cone beam computed tomography (CBCT); and 3) The relationship between TMJ-related symptoms/clinical findings and CBCT-defined TMJ OA, in a hand OA cohort. METHODS: We calculated the frequencies of TMJ-related symptoms, clinical findings and diagnosis of TMJ OA by CBCT and clinical examination in 54 patients from the Oslo hand OA cohort (88% women, mean (range) age 71 (61-83) years)...
January 4, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28063976/effect-of-jaw-opening-exercise-on-prevention-of-temporomandibular-disorders-pain-associated-with-oral-appliance-therapy-in-obstructive-sleep-apnea-patients-a-randomized-double-blind-placebo-controlled-trial
#10
Hiroyuki Ishiyama, Shusuke Inukai, Akira Nishiyama, Masayuki Hideshima, Shuhei Nakamura, Meiyo Tamaoka, Yasunari Miyazaki, Kenji Fueki, Noriyuki Wakabayashi
PURPOSE: There are no studies on the prevention of temporomandibular joint and/or masticatory muscle pain (TMD pain) associated with oral appliance (OA) therapy in patients with obstructive sleep apnea (OSA). The aim of this study was to determine the effect of jaw-opening exercise on TMD pain associated with OA therapy in OSA patients. METHODS: Twenty-five OSA patients without pain-related TMD were consecutively enrolled into a two-arm, randomized, double-blind, placebo-controlled trial...
January 4, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28059446/elimination-of-pain-improves-specificity-of-clinical-diagnostic-criteria-for-adult-chronic-rhinosinusitis
#11
Scott D Hirsch, Evan R Reiter, Laurence J DiNardo, Wen Wan, Theodore A Schuman
OBJECTIVE: Determine whether the elimination of pain improves accuracy of clinical diagnostic criteria for adult chronic rhinosinusitis. STUDY DESIGN: Retrospective cohort study. METHODS: History, symptoms, nasal endoscopy, and computed tomography (CT) results were analyzed for 1,186 adults referred to an academic otolaryngology clinic with presumptive diagnosis of chronic rhinosinusitis. Clinical diagnosis was rendered using the 1997 Rhinosinusitis Taskforce (RSTF) Guidelines and a modified version eliminating facial pain, ear pain, dental pain, and headache...
January 6, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28057402/consultation-with-a-specialized-pain-clinic-reduces-pain-after-oral-and-maxillofacial-surgery
#12
Eva-Maria Dietrich, Norbert Griessinger, Friedrich Wilhelm Neukam, Tilo Schlittenbauer
PURPOSE: Postoperative pain management is important for improved patient care. Our primary objective was to investigate the effect of analgesic treatment adaptation by the pain clinic on postoperative pain relief at an oral and maxillofacial surgery department. Additionally, we aimed to present patients' pain characteristics and the administered analgesic treatment. MATERIALS AND METHODS: A total of 128 patients treated at our clinic in the period 2012-2015 who required analgesic treatment adaptation by our pain clinic were included...
December 14, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28056123/the-interface-of-mechanics-and-nociception-in-joint-pathophysiology-insights-from-the-facet-temporomandibular-joints
#13
Megan M Sperry, Meagan E Ita, Sonia Kartha, Sijia Zhang, Ya-Hsin Yu, Beth Winkelstein
Chronic joint pain is a widespread problem that frequently occurs with aging and trauma. Pain occurs most often in synovial joints, the body's load bearing joints. The mechanical and molecular mechanisms contributing to synovial joint pain are reviewed using two examples, the cervical spinal facet joints and temporomandibular joint. Although much work has focused on the macroscale mechanics of joints in health and disease, the combined influence of tissue mechanics, molecular processes, and nociception in joint pain has only recently become a focus...
January 5, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28054366/the-role-of-molecular-pain-biomarkers-in-temporomandibular-joint-internal-derangement
#14
REVIEW
Malin Ernberg
There is evidence that low-grade inflammation may be responsible for pain and development of degenerative changes in temporomandibular joint internal derangement. This article reviews the current knowledge of the molecular mechanisms behind TMJ internal derangements. A non-systematic search was carried out in PubMed, Embase, and the Cochrane library for studies regarding pathophysiological mechanisms behind internal derangements focusing on pain mediating inflammatory and cartilage degrading molecules. Recent data suggests that release of cytokines may be the key event for pain and cartilage destruction in TMJ internal derangements...
January 5, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28050992/dautrey-s-procedure-revisited-in-management-of-recurrent-mandibular-dislocation
#15
Joanna Baptist, Mohan Baliga
Mandibular dislocation occurs when the condylar head glides out of the glenoid fossa with the condyle positioned in such a way that its posterior articulating surface lying ahead of the articular eminence. Recurrent mandibular dislocation is relatively uncommon. Patient is extremely distressed and goes through a lot of discomfort. Varied etiologies have been cited in the literature, such as keeping the mouth wide open for long periods of time during dental procedures, yawning, laughing, traumatic injuries to the mandible, psychiatric disturbances, and certain drugs...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28050980/prevalence-and-severity-of-temporomandibular-disorders-among-undergraduate-medical-students-in-association-with-khat-chewing
#16
Mohammed M Al Moaleem, Abdulmajeed S Okshah, Ahid A Al-Shahrani, Abdulkhaliq Ali F Alshadidi, Fawzia I Shaabi, Abdulaziz H Mobark, Khurshid A Mattoo
INTRODUCTION: The aim of this study was to assess the prevalence and severity of temporomandibular joint disorders (TMDs) among undergraduate medical students in the presence of khat chewing over a period of time. MATERIALS AND METHODS: Totally, 186 medical college students (age < 20 years) were randomly selected for the present study. The study subjects were divided into two groups according to age, under 20 and above 20 years. The study was based on Fonseca's anamnestic index and its questionnaire, which is composed of 10 questions and classifies the severity of TMDs...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28049115/single-stage-temporomandibular-joint-arthroplasty-in-a-patient-with-complete-bony-ankylosis-and-previous-extradural-haematoma
#17
Emma Brown, Mark H Wilson, Peter Revington
We present a case of a man aged 20 years who was referred with the inability to open his mouth as a consequence of severe ankylosis of his temporomandibular joint. He had previously undergone an attempt to release the ankylosis at the referring institution; however, this was complicated by an extradural haematoma as a result of iatrogenic injury. We describe a one-stage procedure which provided safe excision of the ankylotic mass along with immediate total joint replacement with a custom implant. We advocate the use of preoperative vascular imaging along with the use of custom-made cutting guides to minimise vascular injury...
October 8, 2016: BMJ Case Reports
https://www.readbyqxmd.com/read/28044211/survival-impact-of-local-extension-sites-in-surgically-treated-patients-with-temporal-bone-squamous-cell-carcinoma
#18
Go Omura, Mizuo Ando, Yuki Saito, Osamu Fukuoka, Ken Akashi, Masafumi Yoshida, Akinobu Kakigi, Takahiro Asakage, Tatsuya Yamasoba
OBJECTIVES: Temporal bone squamous cell carcinoma (TSCC) is a rare malignancy. Due to its low incidence rate, studies involving TSCC treatment are limited. The aim of this study is to define the prognostic factors of surgery for TSCC by evaluating our clinical experience. METHODS: We reviewed the clinical charts of patients presenting at the University of Tokyo Hospital between 2001 and 2014 and identified 33 patients with TSCC who had been treated with surgery as initial curative treatment...
January 2, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28043747/osteoblastoma-of-the-temporal-articular-tubercle-misdiagnosed-as%C3%A2-a-temporomandibular-joint-disorder
#19
J Emanuelsson, C M Allen, K Rydin, M Sjöström
The case of a 17-year-old female with a benign osteoblastoma in the temporomandibular joint (TMJ) is reported. The patient had a 2.5-year history of reduced mouth opening accompanied by tenderness and swelling in the left TMJ. Initial treatment included stabilization of the occlusion with a splint, jaw exercises, and analgesics. At first the patient's symptoms decreased, but they then increased 18 months later, prompting a cone beam computed tomography (CBCT) evaluation of the joint. The radiographic findings showed a somewhat ill-defined, radiolucent, expansile lesion containing small scattered calcifications located in the temporal articular tubercle...
December 30, 2016: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28039006/pilot-study-to-show-the-feasibility-of-high-resolution-sagittal-ultrasound-imaging-of-the-temporomandibular-joint
#20
Richard W Katzberg, William F Conway, Susan J Ackerman, Theresa S Gonzales, Valeriy Kheyfits, Michael S Cronan
PURPOSE: To show the feasibility of acquiring high-resolution sagittal ultrasound (US) images of the temporomandibular joint (TMJ). PATIENTS AND METHODS: We used commercially available US probes to assess the TMJ via a transoral soft tissue window to acquire sagittal images. Magnetic resonance imaging and clinical correlation were compared with the US findings by the consensus assessment of 2 of the senior investigators. RESULTS: The sample was composed of 10 TMJs (6 participants) with an age range of 34 to 71 years and a male-female ratio of 3:1...
December 12, 2016: Journal of Oral and Maxillofacial Surgery
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