顎顔面形態が咬合力と咀嚼筋筋放電活動に及ぼす影響について : III-1. Normal face群の垂直方向クレンチング

概要

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To analyze the influence of craniofacial morphology on the functions of stomatognathic system, dentulous subjects in the normal face group were selected and had been engaged invertical clenching to measure the magnitude and direction of bite force as well as the EMG activity of masticatory muscles. The correlation was studied among them. The results were as follows : 1. The correlation curve of temporal muscle was hyperbolic. The correlation curves of masseter muscle and medial pterygoid muscle were linear. 2. The ratio of the EMG activity of the increasing part was equal to or higher than that of the holding part at 25〜100% MC. 3. A significant correlation was observed between <θ'>^^^- and 4 angle measurements. The correlation of 13 items of the craniofacial measurements and direction of bite force was investigated with the EMG activity per 1 kgf. A significant correlation was observed between the EMG activity per 1 kgf and several items of craniofacial measurements.
日本補綴歯科学会の論文
1991-06-01