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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/28069164/ex-vivo-thickness-measurement-of-cartilage-covering-the-temporomandibular-joint
#2
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
#3
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
#4
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
#5
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
#6
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/28054366/the-role-of-molecular-pain-biomarkers-in-temporomandibular-joint-internal-derangement
#7
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/28054261/effectiveness-of-low-level-laser-therapy-on-pain-intensity-pressure-pain-threshold-and-sf-mpq-indexes-of-women-with-myofascial-pain
#8
Laís Valencise Magri, Vinícius Almeida Carvalho, Flávia Cássia Cabral Rodrigues, César Bataglion, Christie Ramos Andrade Leite-Panissi
Women with temporomandibular disorders (TMD) frequently report pain areas in body regions. This process is associated with central sensitization phenomena, present in chronic pain. The low-level laser therapy (LLLT) has been reported as a therapeutic option for the painful TMD treatment. The aim of this study was to analyze the effect of LLLT on pain intensity (visual analogue scale, VAS), pain sensitivity in orofacial and corporal points (pressure pain threshold, PPT), and on Short Form-McGill Pain Questionnaire (SF-MPQ) indexes of women with myofascial pain (subtype of muscle TMD)...
January 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28050980/prevalence-and-severity-of-temporomandibular-disorders-among-undergraduate-medical-students-in-association-with-khat-chewing
#9
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/28043747/osteoblastoma-of-the-temporal-articular-tubercle-misdiagnosed-as%C3%A2-a-temporomandibular-joint-disorder
#10
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
#11
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
https://www.readbyqxmd.com/read/28034533/audiological-features-in-congenital-bony-atresia-of-external-auditory-canal-with-temporal-mandibular-joint-retroposition
#12
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...
October 3, 2016: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28025431/correlation-between-oral-health-related-quality-of-life-and-clinical-dysfunction-index-in-patients-with-temporomandibular-joint-osteoarthritis
#13
Naichuan Su, Yan Liu, Xianrui Yang, Jiefei Shen, Hang Wang
We evaluated the correlation between oral health-related quality of life (OHRQoL) and the Helkimo clinical dysfunction index (HDI) in patients with temporomandibular joint osteoarthritis (TMJ OA). Clinical data and scores for the Chinese version of the 14-item Oral Health Impact Profile (OHIP-C14) were recorded and analyzed for 541 patients with TMJ OA. Each patient was assigned an HDI score of 1 to 25, which was used to classify severity into three categories. OHRQoL was assessed by using OHIP-C14 score, which ranged from 0 to 56...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28011324/temporomandibular-joint-discectomy-with-abdominal-fat-graft-versus-temporalis-myofascial-flap-a%C3%A2-comparative-study
#14
Matt DeMerle, Olubukola O Nafiu, Sharon Aronovich
PURPOSE: Open temporomandibular joint (TMJ) arthroplasty with discectomy has been described as a primary surgical treatment and as a secondary treatment when minimally invasive procedures have failed. The aim of the present study was to compare TMJ discectomy with a fat graft versus TMJ discectomy with a temporalis graft using the pain score and maximal interincisal opening (MIO). PATIENTS AND METHODS: We performed a retrospective study of patients who had undergone TMJ arthroplasty and discectomy with an abdominal fat graft or an interpositional temporalis flap at the University of Michigan from 1999 to 2014...
December 12, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28008644/test-retest-reliability-of-quantitative-sensory-testing-for-mechanical-somatosensory-and-pain-modulation-assessment-of-masticatory-structures
#15
Yuri M Costa, Orlando Morita-Neto, Everardo N S de Araújo-Júnior, Fernanda A Sampaio, Paulo César R Conti, Leonardo R Bonjardim
BACKGROUND: Assessing the reliability of medical measurements is a crucial step toward the elaboration of an applicable clinical instrument. There are few studies that evaluate the reliability of somatosensory assessment and pain modulation of masticatory structures. OBJECTIVES: To estimate the test-retest reliability, i.e., over time, of the mechanical somatosensory assessment of anterior temporalis, masseter and temporomandibular joint (TMJ) and the conditioned pain modulation (CPM) using the anterior temporalis as the test site...
December 23, 2016: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28005732/assessment-of-the-relationship-between-clinicophysiologic-and-magnetic-resonance-imaging-findings-of-the-temporomandibular-disorder-patients
#16
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...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28003132/frequency-and-morbidity-of-temporomandibular-joint-involvement-in-adult-patients-with-a-history-of-juvenile-idiopathic-arthritis
#17
Cory M Resnick, Rushil Dang, Lauren A Henderson, David A Zander, Kimberly M Daniels, Peter A Nigrovic, Leonard B Kaban
PURPOSE: Most patients with juvenile idiopathic arthritis (JIA) have temporomandibular joint (TMJ) involvement, but little is known about the natural history of TMJ disease as these children enter adulthood. The purpose of this study was to evaluate adults with a history of JIA to document the frequency and severity of TMJ abnormalities and morbidity. The authors hypothesized that most would have persistent TMJ disease as adults. MATERIALS AND METHODS: This cross-sectional study included adults (>19 years of age) with JIA who were managed at Boston Children's Hospital (BCH) as children and at Brigham and Women's Hospital (BWH) as adults...
December 2, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28000839/il-1%C3%AE-impedes-the-chondrogenic-differentiation-of-synovial-fluid-mesenchymal-stem-cells-in-the-human-temporomandibular-joint
#18
Wenjing Liu, Yangpeng Sun, Yiqing He, Hong Zhang, Youhua Zheng, Yu Yao, Zhiguang Zhang
Mesenchymal stem cell-based therapy has great therapeutic potential for temporomandibular joint (TMJ) cartilage repair. However, the behavior of mesenchymal stem cells in the inflammatory milieu following their delivery remains poorly understood. Synovial fluid-derived mesenchymal stem cells (SFMSCs) are a promising resource for TMJ cartilage repair, as they are easily obtained from patients with TMJ disorders (TMD). In this study, we obtained SFMSCs from patients with TMD and expanded them in vitro; we then stimulated the cells with interleukin (IL)‑8, IL-1β, IL-6, IL-10, tumor necrosis factor (TNF)-α and IL-12p...
December 15, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27989706/osseous-osteoarthritic-like-changes-and-joint-mobility-of-the-temporomandibular-joints-and-upper-cervical-spine-is-there-a-relation
#19
Liselotte Sonnesen, Arne Petersson, Mie Wiese, Karl Erik Jensen, Palle Svanholt, Merete Bakke
OBJECTIVES: To compare 1) temporomandibular joint (TMJ) mobility between patients with and without reduced upper cervical spine (UCS) mobility and with and without TMJ osseous osteoarthritic-like changes, and 2) UCS osseous changes between patients with and without TMJ osseous osteoarthritic-like changes and with and without reduced UCS mobility. STUDY DESIGN: The study comprised 39 patients without pain from TMJ or UCS and with obstructive sleep apnea, 15 women (age range 26-72 years, mean 56...
November 11, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/27989703/usefulness-of-mri-cbct-image-registration-in-the-evaluation-of-temporomandibular-joint-internal-derangement-by-novice-examiners
#20
Mohammed A Q Al-Saleh, Noura Alsufyani, Hollis Lai, Manuel Lagravere, Jacob L Jaremko, Paul W Major
OBJECTIVE: To assess whether novice examiners can more reliably determine temporomandibular joint (TMJ) disk derangements with the use of fused images of magnetic resonance imaging and cone beam computed tomography (MRI-CBCT) compared with MRI images alone. STUDY DESIGN: Thirty dental students with minimal exposure to TMJ imaging received a 30-minute calibration session in which TMJ diagnostic imaging and the normal anatomy of the TMJ internal derangement were explained...
November 2, 2016: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
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