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Journal of Oral & Facial Pain and Headache (OFPH) is published by MRE Press from Volume 38 lssue 1 (2024). Previous articles were published by another publisher on a subscription basis, and they are hosted by MRE Press on www.jofph.com as a courtesy and upon agreement with Journal of Oral & Facial Pain and Headache.

Original Research

Open Access

The Effect of Jaw Clenching on the Electromyographic Activities of 2 Neck and 2 Trunk Muscles

  • Ron Ehrlich1
  • D. Garlick 1,*,
  • Mark Ninio1

1School of Physiology and Pharmacology, The University of New South Wales, Sydney, Australia

DOI: 10.11607/jofph.13115 Vol.13,Issue 2,June 1999 pp.115-120

Published: 30 June 1999

*Corresponding Author(s): D. Garlick E-mail:

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Abstract

Aims: Symptoms of jaw dysfunction are often associated with neck muscle dysfunction or other musculoskeletal problems. This study attempted to quantify the effect of jaw clenching on the electromyographic (EMG) activity of certain neck, trunk, and jaw muscles.

Methods: The authors recorded EMG muscle activity in the sternocleidomastoid, trapezius, paravertebral, and rectus abdominis muscles in 10 university students at rest and during strong jaw clenching in supine and sitting positions.

Results: In both positions, jaw clenching resulted in increases in neck muscle activity ranging from 7.6 to 33 times resting muscle activity; for the trunk muscles, the increases ranged from 1.4 to 3.3 times resting activity.

Conclusion: These results add further information to the concept of the interrelatedness of jaw, neck, and trunk muscle activity.

Keywords

jaw clenching; electromyography; trunk muscles; neck muscles; masseter; sternocleidomastoid; trapezius; paravertebral muscles; rectus abdomims

Cite and Share

Ron Ehrlich, D. Garlick , Mark Ninio. The Effect of Jaw Clenching on the Electromyographic Activities of 2 Neck and 2 Trunk Muscles . Journal of Oral & Facial Pain and Headache. 1999. 13(2);115-120.

URL:

https://www.jofph.com/articles/10.11607/jofph.13115

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