The Profile of Occluding Strength and Masseter Muscular EMG Power Spectra during Short Time Clenching

短时咬牙过程中咬合强度和咬肌肌电图功率谱的分布

• 批准号: 17592051
• 负责人: KOBAYASHI Yoshinori
• 金额: $ 2.11万
• 依托单位: The Nippon Dental University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17592051/
• 关键词: Clenching; EMG Power Spectra; Masseter Muscular Activity; Occlusal force; MPF Value; 側頭下顎障害; 筋活動の積分値

In order to clarify whether it is possible to objectively evaluate masticatory muscular Function, the masseter activity during clenching were analyzed and the following results were obtained.1. After recording the masseter activity by an EMG of healthy subjects clenching with 80% of maximum clenching for 10 seconds, a program was created that is able to display on the computer both the original wave pattern and the power spectra of the muscular activity.2. 80% clenching by healthy subjects for 10 seconds were performed under two types of conditions (80%MVF : feedback from occlusal force and 80%MVC : feedback from integral values of masseter activities) and the masseter activity and occlusal force were recorded. The 10 seconds of clenching were divided into 5 sections of 2 seconds. Setting the first section as 100% the relative values of MPF values and integral values of masseter muscular activity and occlusal force of the second to fifth section in relation to the first section were in … More vestigated. As a result the relative values of MPF values showed significant changes with time for both 80%MVF and 80%MVC. However no significant differences between 80%MVF and 80%MVC were found. From these results it was concluded that during a short time clenching a certain amount of occlusal force and muscular activities could be generated, and the EMG power spectra of masseter muscle were not affected by various conditions of recording.3. Healthy subjects were asked to perform 80%MVC for 10 seconds and the masseter muscular activities and occlusal force were recorded. 10 seconds were divided into 5 sections of 2 seconds, and by setting the first section as 100% the relative values of occlusal force and MPF values for the second through fifth sections were investigated. As a result the relative values of occlusal force were close to 100% for all sections and changes along time were not observed. On the other hand the relative values of MPF values decreased gradually and a significant change along time was observed. From these results it was concluded that during short time clenching the occlusal force was maintained at a certain level and the MPF values of the masseter EMG power spectra decreased significantly along time. Less

为了探讨咀嚼肌功能的客观评价方法，本研究通过对咬肌在咬紧过程中的活动进行分析，得出以下结论.在记录健康受试者的咬肌活动与80%的最大紧咬10秒的EMG后，创建了一个程序，该程序能够在计算机上显示肌肉活动的原始波形和功率谱。在80%MVF（咬合力反馈）和80%MVC（咬肌活动积分值反馈）两种条件下，对健康受试者进行80%的咬牙10s实验，记录咬肌活动和咬合力。10秒的握紧分为5段，每段2秒。以第一节为100%，第二至第五节的MPF值、咬肌活动积分值和咬合力积分值与第一节的相对值分别为： ...更多信息 调查过了结果表明，80%MVF和80%MVC的MPF值的相对值均随时间发生显著变化。80%MVF和80%MVC之间无显著性差异，说明短时间的咬合可以产生一定的咬合力和肌肉活动，咬肌肌电功率谱不受不同记录条件的影响.健康受试者进行80%MVC 10 s，记录咬肌活动和咬合力。将10秒分为5个2秒的部分，并且通过将第一部分设置为100%，研究第二至第五部分的咬合力和MPF值的相对值。结果表明，各断面咬合力的相对值均接近100%，未观察到沿着时间的变化。另一方面，MPF值的相对值逐渐降低，并且观察到沿着时间的显著变化。结果表明，在短时间内，咬合力维持在一定水平，咬肌电功率谱MPF值沿着时间显著下降。少

项目成果

短時間クレンチング時のEMGパワースペクトル分析による咬筋の機能評価

短期咬紧牙关时肌电图功率谱分析咬肌功能评价

• 发表时间: 2006
• 期刊: 日本補綴歯科学会雑誌 50(3)
• 作者: 雲野美香;小林義典 他
• 通讯作者: 小林義典 他

短時間クレンチング時の咬筋EMGパワースペクトル-記録条件による経時的変化の差異-

短期咬紧牙关期间的咬肌肌电图功率谱 - 根据记录条件随时间变化的差异 -

• 发表时间: 2007
• 期刊: 日本補綴歯科学会東京支部総会・第10回学術大会抄録集
• 作者: HONTSU S;KAWASHIMA M;NISHIKAWA H;KUSUNOKI M;HAYAMIT;OHASHI Y;HIGUCHI Y;HASHIMOTO Y;小林義典 他
• 通讯作者: 小林義典 他

Evaluation of Masseter Muscle Function during Short-time Clenching using EMG Power Spectrum

使用 EMG 功率谱评估短时紧握过程中的咬肌功能

• 发表时间: 2006
• 期刊: J Jpn Prosthodont Soc 50(3)
• 作者: Unno Mika;Yoshinori Kobayashi et al.
• 通讯作者: Yoshinori Kobayashi et al.

短時間クレンチング時の咬筋EMGパワースペクトル -記録条件による経時的変化の差異-

短期咬紧牙期间的咬肌肌电图功率谱 -根据记录条件随时间变化的差异-

• 发表时间: 2007
• 期刊: 日本補綴歯科学会東京支部総会・第10回学術大会抄録集
• 作者: Y.HASHIMOTO;M.KAWASHIMA;R.HATANAKA;M.KUSUNOKI;H.NISHIKAWA;S.HONTSU;M.NAKAMURA;小林義典 他
• 通讯作者: 小林義典 他

Occlusal Force and EMG Power Spectra during Short Time Clenching

短时间咬紧过程中的咬合力和肌电图功率谱

• 发表时间: 2007
• 期刊: Journal of Dental Research Special Issue (A)
• 作者: HASHIMOTO Y;KUSUNOKI M;HATANAKA R;HAMANO K;NISHIKAWA H;HOSOI Y;HONTSU S;Yoshinori Kobayashi et al.
• 通讯作者: Yoshinori Kobayashi et al.