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학술저널

하악골 전돌증의 악교정수술후 회귀도에 관한 연구

Relapse predictability in surgical correction of mandibular prognathism

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The purpose of this study is to investigate the etiologic factors on the relapse after orthognathic surgery. This study was based on the 13 patients with mandibular prognathism who had a surgical retrusive movement of the mandible at the Dept. of Oral Surgery, College of Dentistry, Yonsei University. We have taken serial cephalogram; before surgery (Ⅰ), immediately after surgery (Ⅱ), and from six months to one year after surgery (Ⅲ). A multiple regression analysis was used to determine relationships between the changes during sugery (Ⅱ-Ⅰ) and relapse after surgery (Ⅲ-Ⅱ). The results were obtained as follows, 1. There were positive correlation between horizontal movements of Pogonion and horizontal relapse of that. (ϓ=0.62648, p < 0.05) 2. There were positive correlation between horizontal movements and horizontal relapse of pogonion except horizontal relapse by rotation of mandibular plane. (ϓ=0.67221, p<0.05) 3. Horizontal relapse was beginning to see when the amounts of retrusive movement were about 7 ㎜. 4. There were reverse correlation between changes of mandibular plane angle and relapse of that. (ϓ=-0.79938, p<0.05)

Abstract

I. 서론

II. 연구대상 및 방법

III. 연구성적

IV. 총괄 및 고찰

V. 결론

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