Asymmetry of masticatory muscle activity during intercuspal maximal clenching in healthy subjects and subjects with stomatognathic dysfunction syndrome

H. ABEKURA, H. KOTANI, H. TOKUYAMA, T. HAMADA

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

summary The present study investigated the asymmetry of masticatory muscle activity during maximal intercuspal clenching in healthy subjects and subjects with stomatognathic dysfunction syndrome. Stomatognathic dysfunction syndrome, unilateral mastication and the asymmetry of masticatory muscle activity appear to be related to each other. The asymmetry of masseter muscle activity was greater as stomatognathic dysfunction became increasingly severe. Because fatigue and pain are produced more quickly by unilateral clenching than bilateral clenching, clenching under conditions of left and right muscular imbalance can further aggravate stomatognathic dysfunction. It is suggested the asymmetry of masseter muscle activity during maximal clenching correlates with the onset of the stomagnathic dysfunction syndrome. Stomatognathic dysfunction syndrome is closely related to the asymmetry of masseter muscle activity and only slightly related to the asymmetry of temporal muscle activity. The asymmetry of anterior temporal muscle activity appears to have little clinical significance.

Original languageEnglish
Pages (from-to)699-704
Number of pages6
JournalJournal of oral rehabilitation
Volume22
Issue number9
DOIs
Publication statusPublished - 1995 Sep

ASJC Scopus subject areas

  • Dentistry(all)

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