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Temporomandibular disorders

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https://www.readbyqxmd.com/read/28815255/-investigation-of-related-risk-factors-of-temporomandibular-disorders-in-109-patients
#1
Xin-Xin Hu, Yao-Min Zhu, Liu-Ting He, Ying Gu, Zhi-Gang Liang, Cang-Shang Zheng
PURPOSE: To investigate the related risk factors of temporomandibular disorders(TMD), and to provide evidences for clinical prevention. METHODS: One hundred and nine TMD patients were included in the study as case group, while 109 people with no TMJ symptoms and signs were selected randomly as control group. All subjects fulfilled questionaires. Logistics regression analysis was used to analyze the data with SPSS 22.0 software package. RESULTS: Females patients were more common than males, with 20~29 age group accounting for 44%...
April 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28813570/experimental-and-numerical-characterization-of-the-mechanical-masseter-muscle-response-during-mastication
#2
Johannes Weickenmeier, Mahmood Jabareen, Benjamin J D Le Révérend, Marco Ramaioli, Edoardo Mazza
Predictive simulations of the mastication system would significantly improve our understanding of temporomandibular joint disorders and the planning of cranio-maxillofacial surgery procedures. Respective computational models must be validated by experimental data from in-vivo characterization of the mastication system's mechanical response. The present work introduces a combined experimental and numerical procedure for the validation of a computer model of the masseter muscle during biting. The proposed experimental setup enables simultaneous bite force measurements and ultrasound-based visualization of masseter deformation for the direct comparison with the numerically predicted masseter response...
August 16, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28806429/current-concepts-of-bruxism
#3
Daniele Manfredini, Junia Serra-Negra, Fabio Carboncini, Frank Lobbezoo
Bruxism is a common phenomenon, and emerging evidence suggests that biologic, psychologic, and exogenous factors have greater involvement than morphologic factors in its etiology. Diagnosis should adopt the grading system of possible, probable, and definite. In children, it could be a warning sign of certain psychologic disorders. The proposed mechanism for the bruxism-pain relationship at the individual level is that stress sensitivity and anxious personality traits may be responsible for bruxism activities that may lead to temporomandibular pain, which in turn is modulated by psychosocial factors...
August 14, 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28805272/clinical-phenotype-of-south-east-asian-temporomandibular-disorder-patients-with-upper-airway-resistance-syndrome
#4
David K L Tay, Kenny P Pang
OBJECTIVE: To document the clinical phenotype of temporomandibular disorder (TMD) patients with concomitant upper airway resistance syndrome (UARS) in a South East Asian population. STUDY DESIGN: A multi-center prospective series of 86 TMD patients (26 men and 60 women / mean age 35.7 years) with UARS. All had excessive daytime sleepiness, high arousal index and apnea-hypopnea index (AHI)<5 RESULTS: The mean body mass index was 20.1, mean arousal index 16.2, mean respiratory disturbance index 19...
August 14, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28804935/confirming-the-mechanisms-behind-cognitive-behavioural-therapy-effectiveness-in-chronic-pain-using-structural-equation-modeling-in-a-sample-of-patients-with-temporomandibular-disorders
#5
Estrella Durá-Ferrandis, Maite Ferrando-García, Mª José Galdón-Garrido, Yolanda Andreu-Vaillo
OBJECTIVE: To evaluate whether therapeutic mechanisms assumed to explain the effect of cognitive behavioural therapy (CBT) concerning temporomandibular symptoms are confirmed by structural equation modelling. METHOD: Patients were randomly assigned to either an experimental group receiving CBT (N = 41) or a standard therapy control group (N = 31). Subjects were assessed before and after intervention using mediator variables hypothesized according to the CBT model, as well as outcome variables and other socio-demographic and clinical measures...
August 14, 2017: Clinical Psychology & Psychotherapy
https://www.readbyqxmd.com/read/28800304/role-of-upper-cervical-spine-in-temporomandibular-disorders
#6
Cristian Rodolfo Raya, Gustavo Plaza-Manzano, Daniel Pecos-Martín, Alejandro Ferragut-Garcías, Patricia Martín-Casas, Tomás Gallego-Izquierdo, Natalia Romero-Franco
BACKGROUND: Temporomandibular disorders (TMDs) are prevalent multifactorial pathologies in which the actual role of the cervical region position is controversial. OBJECTIVE: To analyze the relationship between the position of the upper cervical rachis and the symptoms of TMD. METHODS: Sixty women were recruited to this study. All of them completed a questionnaire and were subjected to a temporomadibular exploration to create two different groups: a TMD Group (n= 30) - women who suffered TMD symptoms according to the evaluation; and a control group (n= 30) - women who were free from TMD symptoms...
August 3, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28798446/prosthodontic-planning-in-patients-with-temporomandibular-disorders-and-or-bruxism-a-systematic-review
#7
(no author information available yet)
It is some indictment, in that there were no studies with sufficient rigor to be included in this systematic review.
August 11, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28797764/inflammatory-pain-assessment-in-the-arthritis-of-the-temporomandibular-joint-in-rats-a-comparison-between-two-phlogistic-agents
#8
Joana Cláudia Bezerra de Araújo, Delane Viana Gondim, André Luiz Cunha Cavalcante, Mario Roberto Pontes Lisboa, Gerly Anne de Castro Brito, Mariana Lima Vale
Temporomandibular joint (TMJ) disorders are a group of conditions that result in TMJ pain, which frequently limits basic daily activities. Experimental models that allow the study of the mechanisms underlying these inflammatory and pain conditions are of great clinical relevance. The aim of this study was to evaluate nociception, inflammation and participation of the macrophage/microglia cells in the arthritis of the TMJ induced by two phlogistic agents. 84 rats were divided into 2 groups: Zy, which received zymosan intra-articularly, or Cg, which received carrageenan intra-articularly...
August 7, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28797219/unresolving-trismus-following-third-molar-surgery-report-of-a-case-of-fibrodysplasia-ossificans-progressiva-with-review-of-literature
#9
B R Rajanikanth, Kavitha Prasad, K Vineeth, Sushma M N Sonale, Khuteja Al-Kubra
BACKGROUND: Trismus is a problem commonly encountered by the dental practitioner. It has a number of potential causes, and its treatment will depend on the cause. However, there are very few reports of trismus due to fibrodysplasia ossificans progressiva (FOP) following third molar surgery. CLINICAL PRESENTATION: FOP is a rare human genetic disorder with characteristic clinical features like progressive formation of extraskeletal bone or heterotopic ossification and congenital malformation of the great toes...
August 11, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28796986/evaluation-of-stomatognathic-problems-in-children-with-osteogenesis-imperfecta-osteogenesis-imperfecta-oi-preliminary-study
#10
Danuta Smoląg, Małgorzata Kulesa-Mrowiecka, Jerzy Sułko
According to epidemiological data, muscular dysfunctions of the masticatory system occur in 15-23% of the population. Preventive examinations of functional disorders of the stomatognathic system are, therefore, of particular importance. A distinct group of patients exposed to dysfunctions in the area of the masticatory organ locomotor apparatus comprises those with genetic diseases characterised by disorders in collagen formation. One of such diseases is osteogenesis imperfecta (OI) and dentinogenesis imperfecta that usually goes together with the former...
2017: Developmental Period Medicine
https://www.readbyqxmd.com/read/28792365/frequency-of-temporomandibular-disorders-diagnoses-based-on-rdc-tmd-in-a-polish-patient-population
#11
Magdalena A Osiewicz, Frank Lobbezoo, Bartłomiej W Loster, Jolanta E Loster, Daniele Manfredini
OBJECTIVE: To assess the frequency and age distribution of Axis I and Axis II diagnoses among Polish patients with temporomandibular disorders (TMD). METHOD: One hundred sixty-three (n = 163) consecutive adult patients seeking TMD treatment were assessed based on the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) guidelines. Descriptive statistics on the frequency of diagnoses and mean age of the diagnostic groups was performed. RESULT: Frequency of muscle disorders, disc displacements, and other joint disorders was 56...
August 9, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28791820/evaluation-of-articular-disc-loading-in-the-temporomandibular-joints-after-prosthetic-and-pharmacological-treatment-in-model-studies
#12
Małgorzata E Pihut, Jerzy Margielewicz, Edward Kijak, Grażyna Wiśniewska
BACKGROUND: Temporomandibular joint dysfunction is often related to excessive load in the stomatognathic system. OBJECTIVES: The objective of the model tests, using numeric calculations, was to assess the articular disc loads in the temporomandibular joints after prosthetic and pharmacological treatment of functional disorders of the masticatory organ. MATERIAL AND METHODS: The study involved 10 patients, aged 21-48 years, of both sexes, randomly selected from a group of 120 patients treated with relaxation occlusal splints (60 patients, group I) and intramuscular injection of botulinum toxin type A (60 patients, group II), suffering from temporomandibular joint dysfunction with the dominant muscle component...
May 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28791048/specific-central-nervous-system-medications-are-associated-with-temporomandibular-joint-symptoms
#13
John K Drisdale Iii, Monica G Thornhill, Alexandre R Vieira
AIMS: There is evidence of association between bruxism and the increasingly common central nervous system stimulants prescribed for attention deficit hyperactivity disorder (ADHD), as well as the selective serotonin reuptake inhibitors (SSRIs) often prescribed for depression or anxiety. However, the evidence is not clear on whether these medications inducing bruxism are directly associated with temporomandibular joint disorder (TMD). The aim of this work is to evaluate whether these medications are associated with TMD symptoms...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28783046/epiregulin-and-egfr-interactions-are-involved-in-pain-processing
#14
Loren J Martin, Shad B Smith, Arkady Khoutorsky, Claire A Magnussen, Alexander Samoshkin, Robert E Sorge, Chulmin Cho, Noosha Yosefpour, Sivaani Sivaselvachandran, Sarasa Tohyama, Tiffany Cole, Thang M Khuong, Ellen Mir, Dustin G Gibson, Jeffrey S Wieskopf, Susana G Sotocinal, Jean Sebastien Austin, Carolina B Meloto, Joseph H Gitt, Christos Gkogkas, Nahum Sonenberg, Joel D Greenspan, Roger B Fillingim, Richard Ohrbach, Gary D Slade, Charles Knott, Ronald Dubner, Andrea G Nackley, Alfredo Ribeiro-da-Silva, G Gregory Neely, William Maixner, Dmitri V Zaykin, Jeffrey S Mogil, Luda Diatchenko
The EGFR belongs to the well-studied ErbB family of receptor tyrosine kinases. EGFR is activated by numerous endogenous ligands that promote cellular growth, proliferation, and tissue regeneration. In the present study, we have demonstrated a role for EGFR and its natural ligand, epiregulin (EREG), in pain processing. We show that inhibition of EGFR with clinically available compounds strongly reduced nocifensive behavior in mouse models of inflammatory and chronic pain. EREG-mediated activation of EGFR enhanced nociception through a mechanism involving the PI3K/AKT/mTOR pathway and matrix metalloproteinase-9...
August 7, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28765464/the-effect-of-new-oral-care-technologies-on-the-need-for-dentists-in-2040
#15
Peter M Milgrom, Jeremy A Horst
This article addresses changes in technology of oral self-care or professional care that may increase or decrease the demand for dentists by 2040. The focus is on dental caries, periodontitis, and temporomandibular joint disorders (TMD), as the first two are the main areas of current practice and because TMD is an area for growth. To address this question, the authors examined the scientific literature and government registries to identify recent or soon-to-be-available technologies. They also examined the state of translational efficiency, dissemination, and adoption of advances into dental practice...
August 2017: Journal of Dental Education
https://www.readbyqxmd.com/read/28764284/efficacy-of-bromelain-along-with-trypsin-rutoside-trihydrate-enzymes-and-diclofenac-sodium-combination-therapy-for-the-treatment-of-tmj-osteoarthritis-a-randomised-clinical-trial
#16
S Jayachandran, Priyanka Khobre
INTRODUCTION: Osteoarthritis (OA) is a degenerative disorder characterized by chronic inflammatory response of cartilage and articular surface involving Temporomandibular Joint (TMJ). Pain as one of the major symptom of osteoarthritis affects the quality of life and is usually managed by Non Steroidal Anti Inflammatory Drugs (NSAIDs) such as diclofenac sodium. Bromelain, trypsin and rutoside trihydrate formulation can be used to treat this disease because of anti-inflammatory and anti-oxidant effects...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28759868/an-index-for-the-evaluation-of-3d-masticatory-cycles-stability
#17
Claudia Lúcia Pimenta Ferreira, Matteo Zago, Cláudia Maria de Felício, Chiarella Sforza
OBJECTIVES: To introduce an index (Masticatory Stability Index, MSI) to analyze the stability of chewing cycles in standardized conditions and test it in a group of patients with subclinical mild temporomandibular disorder (TMD). DESIGN: 23 subjects with mild subacute TMD and 21 healthy subjects were involved; they all responded to a questionnaire about signs and symptoms of TMD (ProTMDmulti) and underwent a myofunctional orofacial evaluation with scores, using the protocol of orofacial myofunctional evaluation with scores (OMES)...
July 24, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28759313/glycosylation-of-dmp1-is-essential-for-chondrogenesis-of-condylar-cartilage
#18
Y Weng, Y Liu, H Du, L Li, B Jing, Q Zhang, X Wang, Z Wang, Y Sun
The mandibular condylar cartilage (MCC) shoulders force for the subchondral bone during mastication. The cartilage matrix contains various large molecules, such as type I, II, and X collagens and proteoglycans (PGs), which jointly play essential roles in maintaining cartilage characteristics. PGs play key roles in maintaining the elasticity of cartilage and providing a cushion against mastication forces. In addition to the well-known PGs, DMP1-PG, which is the PG form of dentin matrix protein 1 (DMP1), is a newly identified PG...
July 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28752798/primary-headaches-in-patients-with-temporomandibular-disorders-diagnosis-and-treatment-of-central-sensitization-pain
#19
Marco Sagripanti, Carlotta Viti
OBJECTIVES: Central sensitization (CS) has been found in patients with temporomandibular disorders (TMD), craniofacial pain (CP) and primary headaches, but its clinical implications remain uncertain. The first aim was to provide a synthesis of the current state of knowledge about the link between CS and TMD associated with primary headaches; the second goal was to find methodologies to assess and treat CS in this subgroup of patients. METHODS: A narrative review of the literature was conducted...
July 28, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/28751180/outcomes-of-office-based-temporomandibular-joint-arthroscopy-a-5-year-retrospective-study
#20
R H Hossameldin, J P McCain
Temporomandibular joint (TMJ) arthroscopy is a minimally invasive surgical approach for intra-articular TMJ diseases. Office-based arthroscopy using the smallest TMJ scope allows for good visualization, as well as the ability to lavage the joint in an office setting. This study aimed to assess the efficacy of an office-based TMJ arthroscopic technique. A retrospective evaluation of 363 patients with a TMJ disorder was performed. These patients underwent office-based arthroscopy using the OnPoint 1.2mm Scope System (Biomet Microfixation, Jacksonville, FL, USA) in Florida, USA, from July 2007...
July 24, 2017: International Journal of Oral and Maxillofacial Surgery
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