口腔医学研究

口腔医学研究 ›› 2015, Vol. 31 ›› Issue (11): 1093-1095.

• 临床研究论著 • 上一篇    下一篇

视觉反馈诱导下升颌肌不同水平主动收缩的表面肌电研究

周丽娟,李宝勇,王美青*   

  1. 军事口腔医学国家重点实验室,第四军医大学口腔医学院口腔解剖
    生理学教研室及颞下颌关节科 陕西 西安 710032
  • 收稿日期:2015-06-25 出版日期:2015-11-28 发布日期:2016-03-21
  • 通讯作者: 王美青,电话:029-84776144
  • 作者简介:周丽娟(1985~)女,安徽人,住院医师,博士,主要从事牙合学及颞下颌关节病的研究工作。
    李宝勇(1980~)男,山东人,主治医师,博士,主要从事牙合学及颞下颌关节病的研究工作。
  • 基金资助:
    国家自然科学基金(编号:81271169)

Electromyographic Study on Jaw-closing Muscle Induced by Preseted Levels of Clenching.

ZHOU Li-juan, LI Bao-yong, WANG Mei-qing.   

  1. Department of Oral Anatomy and Physiology, School of Stomatology, Fourth Military Medical University, Xi'an 710032, China
  • Received:2015-06-25 Online:2015-11-28 Published:2016-03-21

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241

被引次数

2

摘要： 目的:探索持续紧咬、咬合力水平和视觉反馈三因素对正中紧咬时颞肌前束和咬肌的肌电活动水平是否存在协同作用。方法:应用T-Scan III咬合分析仪和BioEMG III肌电图仪同步记录25例健康正常成年人以轻度、中等、最大咬合力做正中紧咬时双侧颞肌前束(TA)和咬肌(MM)的肌电活动,并以多因素方差分析方法分析咬合力水平、力值视觉反馈和维持因素对肌电活动的影响。结果:析因分析结果显示,双侧TA和MM的肌电活动水平均随咬合力增高以及力量维持而增强(P<0.001),而且咬合力水平与维持因素之间存在交互作用(P<0.01),力值视觉反馈下仅一侧肌电(右侧TA和左侧MM)维持在目标水平(P>0.05)。结论:维持一定的咬合力水平将增加咬肌和颞肌前束的肌电活动,维持努力与咬合力水平之间存在交互作用。咬合力水平视觉反馈对降低肌电活动水平有一定的作用。

Abstract: Objective: To investigate whether force level, visual feedback and maintenance effort had synergistic effects on the electromyographic (EMG) activities of jaw-closing muscle during simulated clenching. Methods: T-Scan III and BioEMG III systems were used to evaluate the interrelationships between occlusal force and jaw-closing muscles activity of bilateral anterior temporalis (TA) and masseter (MM) muscles in 25 asymptomatic volunteers, who were enrolled to clench with low, medium, and maximum force levels, with or without visual feedback and maintenance effort. Corresponding statistics were calculated using multivariate factorial variance analysis. Results: Statistics indicated that force level and maintenance effort contributed to the increase of SEMG values in all tested jaw muscles during clenching (P<0.001) and there was an association between two factors (P<0.01). The contribution of visual feedback to the SEMG values was only noticed in TAR and MML (P>0.05). Conclusion: The SEMG activity of jaw muscles was increased when maintaining appropriate occlusal force. There was an interaction between maintaining and occlusal force. The visual feedback of occlusal force might decrease the level of SEMG activity.

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