頭部側面X線規格写真による顎顔面形態と咬合平面の関連性について

概要

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The purpose of this study was to investigate the correlation between occlusal plane angle and other angular measurements of dentofacial morphology by cephalometric analysis.Subjects consisted of fiftythree young adults with a mean age of 26 years. The following results were obtained : 1. SN-Occlusal plane angle was 14.4±4.87 degree. 2. SN-Occlusal plane angle showed a positive correlation to SN-Mandibular plane angle with a coeffient of 0.662 (p<0.005), and a negative correlation to SN-Mm with a coeffient of 0.527 (p<0.05). 3. Subjects were separated into three groupes ; less than -1S.D., from -1S.D. to +1S.D. and larger than +1S.D. of SN-Occlusal plane angle. The mean angular measurements of the three respective groups were then compared. Mean values of SN-Mandibular plane angle and Mm-Occlusal plane angle of the three groups showed significant difference to each other (P<0.05). It was shown that occlusal rlane angle correlated with both mandibular plane angle and masseter muscle orientation.
日本補綴歯科学会の論文
1988-12-01