Acoustic myography in the assessment of human masseter muscle.

L'Estrange P.R., Rowell J. and Stokes M.J. (1993) Acoustic myography in the assessment of human masseter muscle.. Journal of Oral Rehabilitation, 20 4: 353-362. doi:10.1111/j.1365-2842.1993.tb01618.x

Author L'Estrange P.R.
Rowell J.
Stokes M.J.
Title Acoustic myography in the assessment of human masseter muscle.
Journal name Journal of Oral Rehabilitation   Check publisher's open access policy
ISSN 0305-182X
Publication date 1993-01-01
Sub-type Article (original research)
DOI 10.1111/j.1365-2842.1993.tb01618.x
Open Access Status Not yet assessed
Volume 20
Issue 4
Start page 353
End page 362
Total pages 10
Language eng
Subject 3500 Dentistry
Abstract The feasibility of examining electro‐mechanical activity of the human masseter muscles using non‐invasive recording techniques was examined in six healthy dentate adults (aged 34‐57 years). Electrical activity of the muscle was examined by surface electro‐myography (EMG) and the mechanical activity, in the form of muscle sounds, was examined by acoustic myography (AMG). Bilateral recordings of EMG and AMG were made simultaneously using composite probes which were placed on the skin over the masseter muscles. A standardized pressure was applied to the probes via adjustable rods attached to a safety helmet. Pressures were monitored by strain gauges placed between the ends of the rods and the probes. With the subject seated, recordings of AMG and EMG were obtained during maximal jaw clenching for 4s and the raw signals were stored on a computer. Of three maximal contractions performed, the last two were used in the analysis. The raw amplified signals underwent frequency analysis by fast Fourier Transform. Total activity was also assessed after amplification, full‐wave rectification and integration, and repeatability of the results was assessed. The AMG frequency range was 6‐15 Hz and was similar to values for other human skeletal muscles. The integrated values for EMG and AMG were repeatable on both sides of the face (IEMG, right r = 0.99, left r = 0.99; IAMG right r = 0.70, left r = 0.71). Simultaneous recordings of AMG and EMG from the masseter muscles may be useful for assessing electro‐mechanical muscle function but further validation studies are required before the technique can be used clinically. Copyright
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
Version Filter Type
Citation counts: Scopus Citation Count Cited 23 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Tue, 28 Jun 2016, 13:17:48 EST by System User