골격성 3급 부정교합 환자에서 하악지시상분할골절단술 후 3D CT 영상을 이용한 하악과두 위치변화 분석

• 영문명: THE EVALUATION OF THE POSITIONAL CHANGE OF THE MANDIBULAR CONDYLE AFTER BILATERAL SAGITTAL SPLIT RAMUS OSTEOTOMY USING THREE DIMENSIONAL COMPUTED TOMOGRAPHY IN SKELETAL CLASS III PATIENTS
• 발행기관: 대한구강악안면외과학회
• 저자명: 장정록(Jung-Rok Jang) 최근호(Guen-Ho Choi) 박영준(Young-Jun Park) 김방신(Bang-Sin Kim) 유민기(Min-Gi Yu) 국민석(Min-Suk Kook) 박홍주(Hong-Ju Park) 유선열(Sun-Youl Ryu) 오희균(Hee-Kyun Oh)
• 간행물 정보: 『대한구강악안면외과학회지』대한구강악안면회과학회지 제35권 제5호, 316~323쪽, 전체 8쪽
• 주제분류: 의약학 > 내과학
• 파일형태: PDF
• 발행일자: 2009.10.30

영문 초록

Purpose: This study was performed to evaluate three-dimensional positional change of the condyle using 3D CT after bilateral sagittal split ramus osteotomy (BSSRO) in skeletal class III patients. Patients and methods: Nine patients who underwent BSSRO for mandibular set-back in skeletal class III malocclusion without facial asymmetry were examined. Miniplates were used for the fixation after BSSRO. 3-D CT was taken before, immediately after, and 6 months after undergoing BSSRO. After creating 3D-CT images using V-works 4.0TM program, axial plane, coronal plane, & sagittal plane were configured. Three dimensional positional change, from each plane to the condyle, of the nine patients was measured before, immediately after, and 6 months after undergoing BSSRO. Results: 1. The mean value of mandibular set-back for nine mandibular prognathism patients was 7.36 mm (± 2.42 mm). 2. In the axial view, condyle is rotated inward immediately after BSSRO (p < 0.05), comparing with preoperative but outward 6 months after BSSRO comparing with postoperative (p < 0.05). 3. In the axial view, condyle is moved laterally immediately after BSSRO (p < 0.05), comparing with preoperative but regressed 6 months after BSSRO comparing with preoperative (p > 0.05). 4. In the frontal & coronal view, there is changed immediately after and 6 months after BSSRO, comparing with preoperative but no statistical difference. Conclusion: These results indicate that three-dimensional positional change of the condyle in skeletal class III patients is observed lateral displacement & inward rotation immediate after BSSRO, but the condyle in 6 months after BSSRO tends to regress to preoperative position.

키워드

BSSRO Condyle Skeletal class III Computed tomography