Electromyographic activity of masticatory, neck and trunk muscles of subjects with different mandibular divergence

Simona Tecco, Sergio Caputi, Stefano Tete, Giovanna Orsini, Felice Festa

Research output: Contribution to journalArticle

Abstract

Objective: To record and compare the surface electromyographic (sEMG) activity of masticatory, neck, and trunk muscles at different functional requirements of the stomatognathic system in an adult sample classified according to the mandibular divergence angle (SN-GoGn angle). Materials and Methods: 60 Caucasian adult subjects were classified on the basis of SN-GoGn angle: 20 subjects with normal mandibular divergence, 20 subjects with lower angles, and 20 subjects with higher angles. Their sEMG activity was recorded at mandibular rest position and during maximal voluntary clenching. Results: sEMG activity of subjects with a lower angle was significantly higher than that of subjects in the other two groups at mandibular rest position for the masseter, the anterior temporal, the upper trapezius, and the posterior cervical muscles. During maximal voluntary clenching, no significant difference was observed in the sEMG activity of the masticatory muscles among the three groups. However, the sEMG activity of the posterior cervicals and that of the upper trapezius were significantly higher in subjects with a lower angle than in the other two groups. Conclusion: Skeletal class does seem to affect the sEMG pattern activity of the masticatory, neck, and trunk muscles.

Original languageEnglish
Pages (from-to)260-265
Number of pages6
JournalAngle Orthodontist
Volume77
Issue number2
DOIs
Publication statusPublished - Mar 2007

    Fingerprint

Keywords

  • Cephalometry
  • Electromyography
  • Mandibular divergence
  • Neck and trunk muscles
  • Skeletal facial type

ASJC Scopus subject areas

  • Dentistry(all)

Cite this