期刊
BRAIN RESEARCH
卷 1383, 期 -, 页码 206-217出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.brainres.2011.01.096
关键词
fMRI; Orofacial; Mastication; Bruxism; Involuntary movements
资金
- American Equilibration Society [2005-2]
- Indiana Center of Excellence in Biomedical Imaging
- Departments of Radiology and Imaging Sciences and Anatomy and Cell Biology, Indiana University School of Medicine
Jaw-clenching and tooth-grinding associated with brtuxism can contribute to abnormal tooth wear and pain in the masticatory system. Clench and tooth-grinding jaw-movement tasks were evaluated in a block-design fMRI study comparing a dental-control (DC) group with a tooth-grinding (TG) group. Group classification was made prior to imaging based upon self-reported parafunctional clench and grind behavior and clinical evidence of abnormal tooth wear. Group differences in brain activation patterns were found for each task compared to the resting baseline. The DC group showed a more widely distributed pattern; more extensive activity in the supplementary motor area (SMA) proper that extended into the pre-SMA; and, for clench, activity in the left inferior parietal lobule (IPL). The DC group activated more than the TG subjects the left IPL for clench, and pre-SMA for grind. Neither task elicited more activity in the TG than DC subjects. Our group findings suggest that jaw-movement tasks executed by the TG group elicited (1) more efficient brain activation pattern consistent with other studies that found less extensive activity with executing over-learned tasks; (2) underactive SMA activity that underlies reduced motor planning, (3) decreased inferior parietal activity that is associated with lesser motor-attentional demands. Thus orofacial parafunctional habits may influence brain circuits recruited for jaw movements, providing a possible basis for understanding involuntary jaw movements in bruxism and oral movement disorders in general. (C) 2011 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据