| Masticatory jaw movement optimization after introduction of occlusal interference. | |
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MedLine Citation:
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PMID: 19968764 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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How 'control' characteristics of masticatory jaw movement, such as skilfulness of the movement, change after alteration in occlusion remains uncertain. For each of 10 healthy adults with good occlusion, an occlusal interference with artificial 'tooth-cusp' was introduced to the crown of the upper molar tooth on the non-working side of unilateral chewing. Mandibular incisor-point movements were then recorded by a 3D tracking device. The introduction of the occlusal interference induced a remarkable increase in the normalized jerk-cost (NJC), prolonged duration of the decelerative phase and lowered peak velocity for jaw closing movement during chewing. Overall, the NJC and velocity profile showed significant recoveries during the course of about 90 repetitive chewing cycles performed under the altered occlusal condition. These findings suggest that acute adaptive changes of jaw motion after introduction of occlusal interference might be characterized as the recovery process of movement skilfulness in terms of movement smoothness and velocity profile. |
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Authors:
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K Yashiro; T Fukuda; K Takada |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't Date: 2009-12-08 |
Journal Detail:
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Title: Journal of oral rehabilitation Volume: 37 ISSN: 1365-2842 ISO Abbreviation: J Oral Rehabil Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-04-22 Completed Date: 2010-07-15 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0433604 Medline TA: J Oral Rehabil Country: England |
Other Details:
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Languages: eng Pagination: 163-70 Citation Subset: D; IM |
Affiliation:
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Osaka University Graduate School of Dentistry, Orthodontics and Dentofacial Orthopedics, Suita, Osaka, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adaptation, Physiological
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physiology Adult Chewing Gum Crowns Deceleration Dental Occlusion, Traumatic / physiopathology* Female Humans Imaging, Three-Dimensional Incisor / physiopathology Kinesthesis Male Mandible / physiopathology* Mastication / physiology* Molar / physiopathology Motor Skills / physiology* Movement Signal Processing, Computer-Assisted Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Chewing Gum |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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