| Mandible position and head posture: electromyography of sternocleidomastoids. | |
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MedLine Citation:
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PMID: 9709564 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A study was performed to evaluate relationships between mandible position, dynamics, muscle activity and head posture while swallowing by use of surface EMG and mandible kinesiograph on two population groups (118 pathologics and 31 controls). The study produced the following: 1. specific mandible dynamics with a very fast rising phase (0.3 sec) and longer phase of stabilization (1.5 sec); 2. more than 60% of the subjects presented deglutition at occlusion level, the others swallowing at a distance of 0.1-4.6 mm; 3. the whole muscle activity (temporals, masseters, digastrics, sternocleidomastoids) lasted 1.5 sec with no correlation of duration to age; 4. sternocleidomastoids fired at swallowing with an effort of one-half of temporals or masseters; 6. firing order presented a particular pattern: digastrics more often first, sternocleidomastoids more often last. No differences were found between the pathologics and controls. Findings suggest that the oral phase or mandible dynamic, and the stabilization phase or oropharyngeal phase of swallowing, has an individual role that is important in head postural equilibrium. |
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Authors:
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L Bazzotti |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Cranio : the journal of craniomandibular practice Volume: 16 ISSN: 0886-9634 ISO Abbreviation: Cranio Publication Date: 1998 Apr |
Date Detail:
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Created Date: 1998-08-26 Completed Date: 1998-08-26 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 8609491 Medline TA: Cranio Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 100-8 Citation Subset: D |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Case-Control Studies Chi-Square Distribution Deglutition / physiology* Dental Occlusion Electromyography / methods Female Head* Humans Male Mandible / physiology* Middle Aged Motor Neurons / physiology Muscle Contraction / physiology Neck Muscles / physiology* Posture* Regression Analysis |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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