골격성 III급 부정교합 환자의 악교정 수술 후 하악 과두의 위치 변화에 관한 연구

• 영문명: THE CHANGES OF CONDYLAR POSITION AFTER ORTHOGNATHIC SURGERY IN PATIENTS WITH SKELETAL CLASS III MALOCCLUSION
• 발행기관: 대한치과교정학회
• 저자명: 윤형상(Hyang-Sang Yoon) 백형선(Hyoung-Seon Baik)
• 간행물 정보: 『The Korean Journal of Orthodontics』제22권 제4호, 837~853쪽, 전체 17쪽
• 주제분류: 의약학 > 기타의약학
• 파일형태: PDF
• 발행일자: 1992.12.31

영문 초록

The purpose of this study was to investigate the positional changes of the mandibular condyles after orthognathic surgery in patients with severe skeletal Class III malocclusion. This study was based on 21 patients who had received bilateral sagittal split osteotomy for mandibular setback. Among them 14 were fixated non-rigidly (W group), and 7 were fixated rigidly (R group). After submental vertex view analysis each subject was given the T.M.J. Tomogram in both centric occlusion and centric relation immediate before, 4~6 weeks after and more than 6 months after surgery. The anteroposterior and vertical changes between each time interval were measured and analyzed statistically. Fallowing results were obtained. 1. There was no significant difference between right and left condyles in their anteroposterior and vertical changes of the condylar position. 2. In anteroposterior changes of condylar positon of the wire fixation group, the condyles were moved anteriorly 4-6 weeks after surgery, and then the pattern of reestablishment to their preoperative position was observed more than 6 months after surgery. In the rigid fixation group, there was no significant difference in any observation periods of centric occlusion and centric relation. 3. In vertical changes of condylar position of the wire fixation group, the condyles were moved inferiorly 4-6 weeks after surgery, and then the pattern of reestablishment to their preoperative position was observed more than 6 months after surgery. In the rigid fixation group, the condyles were moved inferiorly 4-6 weeks after surgery, and then the pattern of reestablishment to their preoperative position was observed more than 6 months after surgery in centric occlusion only.

키워드

sagittal split ramus osteotomy rigid fixation non-rigid fixation condylar positon