Document Detail

An electromyographic study of aspects of 'deprogramming' of human jaw muscles.
MedLine Citation:
PMID:  2283547     Owner:  NLM     Status:  MEDLINE    
Surface electromyograms from the right and left masseter and anterior temporalis muscles were used to detect peripheral correlates of deprogramming, also known as programming and reprogramming, of jaw elevator muscles. Putative deprogramming was attempted through the clinically recommended use of a leaf gauge, placed for 15 min between the maxillary and mandibular anterior teeth and disoccluding the posterior teeth by about 2 mm. Studied contractile activities were those of postural activity (subconscious, semi-isometric, minimal activity) and intercuspal teeth clenching (conscious, isometric, maximal activity). Use of the leaf gauge did not affect normalized postural activity (about 4%), the duration (about 900 ms) and static work efforts of clenching (about 1200 microV.s), the time to peak mean voltage of clenching (about 400 ms), and the peak mean voltage of clenching (about 300 microV). Activity and asymmetry indices showed that the studied motor innervation patterns were not changed by the leaf gauge.
S J Donegan; A B Carr; L V Christensen; G J Ziebert
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of oral rehabilitation     Volume:  17     ISSN:  0305-182X     ISO Abbreviation:  J Oral Rehabil     Publication Date:  1990 Nov 
Date Detail:
Created Date:  1991-03-15     Completed Date:  1991-03-15     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0433604     Medline TA:  J Oral Rehabil     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  509-18     Citation Subset:  D; IM    
Marquette University, School of Dentistry, Milwaukee, WI 53233.
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MeSH Terms
Dental Occlusion*
Isometric Contraction
Masseter Muscle / physiology*
Muscle Contraction / physiology*
Temporal Muscle / physiology*
Time Factors
Vertical Dimension

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