| Comparison of cerebral activity during teeth clenching and fist clenching: a functional magnetic resonance imaging study. | |
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MedLine Citation:
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PMID: 21083626 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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Using functional magnetic resonance imaging (fMRI), we compared the cerebral activity during bilateral light fist-clenching and light-teeth clenching to provide more information on the central processing mechanisms underlying awake bruxism. Fourteen subjects participated in our study. Statistical comparisons were used to identify brain regions with significant activation in the subtraction of light fist clenching and light teeth clenching activity minus baseline. Participants also evaluated the perceived effort of clenching for each task, using a visual analogue scale of 0-100, after fMRI was performed. Bilateral light fist-clenching significantly activated the bilateral sensorimotor cortex, while light teeth-clenching was significantly associated with activation of the bilateral sensorimotor cortex, supplementary motor area, dorsolateral prefrontal cortex, and posterior parietal cortex. The VAS scores for fist clenching and teeth clenching were not significantly different. As light teeth-clenching activates a more extensive cortical network compared with light fist-clenching, we suggest that the teeth clenching may induce a more complex cerebral activity compared with the performance of a hand motor task. The clinical significance of these findings remains unknown but could perhaps be related to the propensity to trigger awake bruxism. |
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Authors:
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T Iida; M Kato; O Komiyama; H Suzuki; T Asano; T Kuroki; T Kaneda; P Svensson; M Kawara |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: European journal of oral sciences Volume: 118 ISSN: 1600-0722 ISO Abbreviation: Eur. J. Oral Sci. Publication Date: 2010 Dec |
Date Detail:
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Created Date: 2010-11-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9504563 Medline TA: Eur J Oral Sci Country: Denmark |
Other Details:
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Languages: eng Pagination: 635-41 Citation Subset: D; IM |
Copyright Information:
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© 2010 Eur J Oral Sci. |
Affiliation:
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Department of Clinical Oral Physiology, Nihon University School of Dentistry at Matsudo, Chiba, Japan. iida.takashi96@nihon-u.ac.jp |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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