하악전돌증환자의 악교정수술후 안면측모 변화에 관한 두부방사선 계측학적 연구

• 영문명: A CEPHALOMETRIC STUDY OF PROFILE CHANGES FOLLOWING ORTHOGNATHIC SURGERY IN PATIENTS WITH MANDIBULAR PROGNATHISM
• 발행기관: 대한치과교정학회
• 저자명: 이형식(Hyung Sik Lee) 박영철(Yung Chael Park)
• 간행물 정보: 『The Korean Journal of Orthodontics』제17권 제2호, 299~310쪽, 전체 12쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1987.12.31

영문 초록

The purpose of this study was to examine soft tissue and hardtissue changes following orthognathic surgery in patients with mandibular prognathism lateral cephalometric films were obtained immediate before surgery, 48 hours following surgery, and 6 months following surgery. 18 patients were selected (10 men, and 6 women) for this study, who had received orthognathic surgery. Statistical analysis for the each time interval differences were performed with the SPSS package. The results were as follows, ∗In the cases of mandibular sagittal split osteotomy 1. LI point was moved backward (average 7.55mm) 48 hours following surgery. 6 months later, it was returned forward (average 1.1mm) Relapse rate was 14.6%. 2. Pog was moved backward (average 8.3mm) 48 hours following surgery. The ratio of horizontal change of soft tissue to hard tissue at pog is 0.95 1 ∗In the cases of maxillary Le-Fort I osteotomy & mandibular sagittal split osteotomy. 3. A point was moved forward (average 3.31mm) 48 hours following surgery. 6 months later, it was returned backward (average 0.31). Relapse rate was 9.4% 4. 6 months later, the ratio of facial convexity angle change of soft tissue to hard tissue is 0.63 1.