MASSETER MUSCLE CONTRACTION OF TMD PATIENTS IN TERMS OF THEIR PARTICULAR PSYCHOLOGICAL STATE UNDER EXPERIMENTAL STRESS

概要

論文の詳細を見る
The aim of our study is to examine the relationship between temporomandibular disorders (TMD) onset and psychological state as to muscle hyperactivity under experimental stress. Twenty-one TMD patients and 29 non-TMD control subjects were recruited for this study. Their psychological states were examined with State-Trait Anxiety Inventory (STAI) and Self-rating Depression Scale (SDS). Electromyograms (EMG) of the masseter muscle and heart rates were recorded under experimental stress task. The data of 45 subjects (18 TMD patients and 27 controls) were statistically analyzed. Two-way analysis of variance was used to examine the interactions on the masseter muscle contraction between TMD and the other factors. There was a significant interaction between TMD and trait anxiety (P=0.006), and between TMD and depression (P=0.045). As a result, it was suggested that TMD patients with high trait anxiety or depression may cause masseter muscle contraction more frequently under psychological stress.
名古屋市立大学の論文