Photoshop을 이용한 하악 후퇴 수술후의 연조직 안모 예측

Abstract

Various computer software has been applied to predict soft tissue profile after orthognathic surgery. In this study, the Photoshop program was introduced to simulate the surgical result. The purpose of the study was to evaluate reliability of the program in prediction of profile changes as a result of mandibular set-back surgery. Based on predicted hard tissue changes, soft tissue changes were recorded with pre- and postoperative lateral cephalogram of 26 patients with skeletal Class III deformity. All patients underwent bilateral sagittal split osteotomy. The mean mandibular set-back was 6.2mm (Pog) and soft tissue moved 6.3mm, 100% in Pog’point post-operatively. Difference between the between real horizontal soft tissue changes and predicted changes has not been detected statistically. However, the result revealed vertical soft tissue profile prediction was unsatisfactory. This prediction method can be used as additional informativetool for the patient explanation.