Assessment of the impact of temporomandibular disorders on maximum bite force.

Jelena Todic,Miloš Staletovic,Sasa Tabakovic,Brankica Martinovic,Jasna Pavlovic

doi:10.5507/bp.2019.001

Abstract

Temporomandibular disorders (TMD) refer to functional disorders of the masticatory system, temporomandibular joint (TMJ) and masticatory muscles. The main objective of this study was to determine whether and to what extent temporomandibular disorders (TMD) affect the maximum bite force (MBF). The present study included subjects with and without temporomandibular disorder. The presence of TMD was assessed by means of the Helkimo clinical dysfunction index analysis. We measured the maximum bite pressure (MBP) and occlusal contact area (OCA) by means of a Fuji Prescale Pressure measurement film. Based on the MBP and OCA values obtained, MBF values were determined. The MBF values were significantly lower in patients with TMD compared to subjects without TMD (P Conclusion: TMDs have a significant impact on MBF and masticatory muscle action potential. More research is needed to determine the impact of reduced maximum bite force on the functional efficiency of the masticatory system.

Highlights

Temporomandibular disorders (TMD) refer to functional disorders of the masticatory system, temporomandibular joint (TMJ) and masticatory muscles.Epidemiological studies have established that 50-75% of the population during their lifetime experiences transient symptoms of TMD; only 3-4% of patients seek medical assistance[1].Symptoms of the disorder include pain, restricted mandibular mobility and the noises from the TMJ during jaw movement
Average values of Maximum bite pressure (MBP), occlusal contact surface area (OCA) and Maximum bite force (MBF) were compared between the TMD group and the control group subjects respecting the gender distinction thereof
By testing the statistical significance of the difference (t-test), it was established that the average values of OCA were significantly higher in the control group compared to the TMD group (P

Summary

Introduction

Temporomandibular disorders (TMD) refer to functional disorders of the masticatory system, temporomandibular joint (TMJ) and masticatory muscles.Epidemiological studies have established that 50-75% of the population during their lifetime experiences transient symptoms of TMD; only 3-4% of patients seek medical assistance[1].Symptoms of the disorder include pain, restricted mandibular mobility and the noises from the TMJ during jaw movement. Temporomandibular disorders (TMD) refer to functional disorders of the masticatory system, temporomandibular joint (TMJ) and masticatory muscles. Epidemiological studies have established that 50-75% of the population during their lifetime experiences transient symptoms of TMD; only 3-4% of patients seek medical assistance[1]. Symptoms of the disorder include pain, restricted mandibular mobility and the noises from the TMJ during jaw movement. Pain is localised in masticatory muscles, temporomandibular joints and preauricular area, and may manifest in the form of otalgia or headache. Mandibular mobility disorders are reflected as single or multiple motion restrictions during jaw movement, which may be accompanied by irregularities in the progress and flow. The noise in the TMJ may be registered as a clicking, crepitus or a dull sound in the terminal stages of mouth opening

Objectives

Methods

Results

Discussion

Conclusion