颌面颅形态学因素与咀嚼肌肌电图活动的关系。

Nihon Ago Kansetsu Gakkai Zasshi Pub Date : 1989-01-01
T Morimitsu, T Nokubi, T Nagashima, M Yoshida, K Ikebe, Y Okuno
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引用次数: 0

摘要

本研究的目的是评估口面颅形态学和功能因素之间的关系。对10例正常人的侧位脑电图进行了记录。作者将测量参数分为线性测量和角度测量。记录叩击运动时双侧颞前肌和咬肌的肌电图活动。然后测量两组肌肉的总肌肉活动,以及咬肌活动占总肌肉活动的比例。分析头侧测量与肌电参数的相关系数。结果表明:1)肌肉总活动度与各项线性测量值呈正相关。特别是,总肌肉活动与下颌骨大小显著相关,如Co-Go和Go-Me。2)上颌基底面、下颌缘面、下颌基底面夹角越小,S-N-A、S-N-B夹角越大,肌肉总活动呈增加趋势。3)咬肌活动比与颅形态学指标无相关性。咬肌活动比与牙位和前牙前后倾角相关。这些结果提示,在检查咀嚼肌活动时,有必要考虑口面颅形态学因素与肌电图参数之间的关系。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Relationship between orofaciocranial morphologic factors and electromyographic activities of the masticatory muscles].

The purpose of this study is to evaluate the relationship between orofaciocranial morphologic and functional factors. The lateral cephalograms of 10 normal subjects were taken and traced. The authors divided cephalometric parameters into linear and angular measurements. Electromyographic (EMG) activities were recorded from bilateral anterior temporal and masseter muscles during tapping movement. Then the total muscle activity of both muscles, and the masseter muscle activity ratio in the total muscle activity were measured. The correlation coefficients between cephalometric measurements and EMG parameters were analyzed. The results of this study are as follows: 1) The total muscle activity revealed positive correlation with all the linear measurements. Especially, the total muscle activity significantly correlated with the size of mandible, such as Co-Go and Go-Me. 2) The total muscle activity showed a tendency to increase when the angles among SN plane, FH plane, maxillary base plane and mandibular border plane became small, and when S-N-A and S-N-B became large. 3) There was no correlation between masseter muscle activity ratio and cranial morphologic measurments. But masseter muscle activity ratio correlated with tooth position and anteroposterior inclination of the anterior teeth. These results suggest that the consideration of the relationship between orofaciocranial morphologic factors and EMG parameters is necessary for examining the masticatory muscle activity.

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