Evaluation of occlusal factors in patients with temporomandibular joint disorder

Abstract

OBJECTIVE: The aim of this study was to determine the prevalence and the relation between the main occlusal factors and the temporomandibular disorder (TMD). METHODS: We analyzed 100 patients (50 diagnosed with TMD and 50 asymptomatic volunteers, control group) through a questionnaire that classified TMD as absent, mild, moderate and severe. Then, an evaluation was made of intraoral occlusal factors: Absence of posterior teeth, wear facets, overjet, overbite, open bite, posterior crossbite, sagittal relationship (Class I, II and III), centric relation discrepancy for maximum intercuspation, anterior guidance and balancing occlusal interference. The c² examined the association between TMD and considered occlusal variables. RESULTS: The prevalence of studied occlusal factors was higher in patients with moderate and severe TMD. Statistically significant results were found on: Absence of five or more posterior teeth, overbite and overjet greater than 5 mm, edge-to-edge bite, posterior crossbite, Class II and III, the absence of effective anterior guide and balancing side interferences. CONCLUSIONS: Indeed, it is concluded that there is a relationship between TMD and occlusal factors, however it can not be told to what extent these factors are predisposing, precipitating or perpetuating the disease. Therefore, despite its multifactorial etiology, one can not neglect the occlusal analysis of these patients.

Masticatory behaviour and chewing difficulties in young adults with temporomandibular disorders

“…The criteria for the classification of the malocclusion were based on Angle's classification (1899): subjects who presented one or more of the following conditions were considered as having malocclusion: Angle Class II or III molar relationship, increased overjet (incisors with overjet >4 mm), increased overbite (incisors overbite >4 mm), anterior and/or posterior crossbite, anterior and/or posterior open bite; absence of dental elements …”

The Association between Number of Tooth Loss, Tooth Loss Quadrants, and Occlusal Support with Temporomandibular Disorders in Partially Edentulous Patients

“…The association between tooth loss and temporomandibular disorders (TMD) remains controversial [7,8]. Therefore, the authors are interested to investigate whether the number of missing teeth are associated with temporomandibular disorders in RSGMP FKG USU patients in terms of the number of missing teeth, the number of dental quadrants with missing posterior teeth and the number of occlusal support.…”

The Relationship between Eccentric Occlusion with Temporomandibular Disorders (TMD) and Para-functional Habits among Dentistry Students of Tabriz University of Medical Sciences in 2017

“…In a study of Mr. Sousa et alno relationship was found between side occlusion and TMD problems that are aligned with the results of the present study (4). 14 ABCMED 6(3): [11][12][13][14][15] This study showed that 16.33 percent of Group function side occlusion, 13.23 percent had side occlusion of Anterior Group function and 70.4 percent had side occlusion of canine raise.…”

“…ABCMED 6(3): [11][12][13][14][15] abnormal muscle or ligament connection 5) Stress: Stress leads to bruxism or clenching (5)(6)(7).…”

“…The relationship between TMD and other indexes was not detected (12) On the other hand, Mr. Sousa et alconducted a recent study on 100 patients, there was no relationship between side occlusion and TMD problems (4). In another study that was conducted in 2012 on 100 patients, factors such as occlusal interferences on the balancing side, the lack of posterior teeth more than 5, overjet and overbite more than 5 mm and had a significant role in the development of TMD problems (13). In another study by Dr. Taghavi et alon 235 dentistry students, stress and oral habits, by creating parafunctional performance, had an important role in increasing prevalence of symptoms such as joint sound, joint pain and limitation in opening mouth.…”