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교정치료가 비순각의 변화에 미치는 영향에 관한 연구
The Change in the Nasolabial Angle after Orthodontic Treatment

구강생물학연구 1993년 17권 1호 p.39 ~ 50

김영수, 이동주,

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김영수 ( Kim Young-Soo ) - 조선대학교 치과대학 교정학교실
이동주 ( Lee Dong-Joo ) - 조선대학교 치과대학 교정학교실

KMID : 0353319930170010039

Abstract

The purpose of this study was to evaluate the changes in the nasolabial angle of the soft tissue profile after orthodontic treatment.
The lateral cephalogram was analysed in 60 patients, consisted of 15 Angle’s Class I bicuspid extraction, 15 Angle’s Class I nonextraction, 15 Angle’s Class II nonextraction and 15 Angles’s Class III nonextraction patients.
@ES The results were obtained as follows.
@EN 1. The changes in the nasolabial angle had highest correlation with the changes of inclination of maxillary incisors (γ=-0.74).
2. The nasolabial angle was increased 5.33°in Class I extraction, and increased 5.36°in Class II (Table 2., 4.).
3. The nasolabial angel was decreased 4.61°in Class I nonextraction, and decreased 4.83°in Class III (Table 3., 5.).
4. There was little correlation between changes in the nasolabial angel and changes in the mandibular incisors.