A study on the variations of the soft tissue profile contour in relation to the skeletal patterns / 대한치과교정학회지

ABSTRACT

The purpose this study was to investigate the variations of the soft tissue profile contour in relation to the skeletal patterns and to confirm the correlation of soft tissue angles to the sagittal or vertical skeletal elements. Lateral cephalograms of 79 cases which were older than 17 years in age, were traced and statistically analyzed. The obtained results were as follows 1. Nasolabial angle, interlabial angle, lower lip angle, mentolabial angle, symphyseal angle showed the significant differences between skeletal Class II and skeletal. Class III group, but nasofrontal, upper lip, mentolavbial, and symphyseal angles showed the significant differences between high angle low angle group. 2. ANB value showed the dignificant positive correlation to nasolabial, symphuseal, and interlabial angles and the significant negative felation to lower lip angle. 3. SN-GoMe vlue showed the significant positive correlation to mentolabial, symphyseal, nasofrontal, and upper lip angles. 4. Soft tissue profile contour in SK. Class II group showed greater accofdance to SN-GoMe value than those in SK. Class III group.