Abstract
The purpose of this study was to investigate the correlation between occlusal plane angle and other angular measurements of dentofacial morphology by cephalometric analy
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 -S. 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 plane angle correlated with both mandibular plane angle and masseter muscle orientation.
