Assessment of the impact of temporomandibular disorders on maximum bite force

Abstract

Aim. 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). Methods. 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. Results. The MBF values were significantly lower in patients with TMD compared to subjects without TMD (P<0.0005). MBF values demonstrate a trend, with a tendency towards a decrease in values with the increase in the severity of TMD (P <0.01). OCA was significantly lower in patients with TMD (P<0.05). There was no significant difference between controls and patients with TMD in terms of the MBP (P=0.135). 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.

Effects of Therapeutic and Aerobic Exercise Programs on Pain, Neuromuscular Activation, and Bite Force in Patients with Temporomandibular Disorders

“…The results are in line with those observed by other authors, who found that the decrease in masticatory muscle pain intensity led to an increase in BF [46]. Another set of studies evaluating the BF of patients with TMD in comparison with healthy subjects found that the masticatory MVC was reduced in the group of participants with TMD [8,47]. Cho and Lee [7] obtained similar results, since they found that the presence of pain led to a decrease in BF, although it is necessary to emphasize that in these studies, pain was experimentally induced.…”

“…However, pain is the main issue and the most common reason for seeking medical care [5], which is why a large number of studies have aimed to evaluate the effectiveness of various pain-related intervention measures [6]. Pain in the masticatory muscles in individuals with TMD can lead to changes in neuromuscular activation patterns, which may be more evident in maximum voluntary contraction (MVC) [7], with some studies indicating a decrease in bite force (BF) in these patients [8].…”

Factors associated with bite force in people with Parkinson's disease

“…Anatomical and physiological characteristics -such as sex, height, weight, dental status, facial morphology, age, denture use, presence of TMD, and masticatory preference -influence the direct BF measures 6,15,[24][25][26] . However, no correlation between BF and PD stage, SSO, and time of diagnosis was found in the literature researched to compare with this study.…”

Are jaw range of motion, muscle function and proprioception impaired in adults with persistent temporomandibular disorders? A systematic review and meta‐analysis

“…Joint position sense was reported in five studies. Two studies reported increased joint position error in TMD groups compared with controls, while two studies found no significant difference 56 Mod Lafreniere et al 1997 57 Mod MazzeƩo et al 2017 34 Mod Miller et al 1999 81 Mod Miller et al 2000 58 Mod Monteiro et al 1987 59 Mod PiƩa et al 2015 37 Mod Pizolato et al 2007 38 Mod Rauch et al 2018 39 Mod Rezaie et al 2017 40 Mod Seligman et al 1988 61 Mod Stegenga et al 1990 62 Mod Thorp et al 2019 67 Mod Todic et al 2019 70 Mod Tsolka et al 1994 71 Mod Turp et al 2005 43 Mod Visser et al 1995 63 Mod Wang et al 2018 72 Mod Xu et al 2017 44 Mod Zhang et al 2017 64 Mod Badel et al 2011 19 High Dahlstrom et al 1989 50 High Dworkin et al 1990 52 High Goulet et al 1998 77 High Isacsson et al 1988 54 High Lindauer et al 1986 80 High Nielsen et al 1990 60 High Nielsen et al 1987 78 High Van Willigen et al 1986 82 High 61 Reduced in all TMD groups compared to assymptomatic controls (P < .001 all except DDwR where P < .05). Reduced in all TMD groups, except DDwR, compared to symptomatic controls (P < .001)…”