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

서지정보

· 발행기관 : 대한구강악안면외과학회
· 수록지 정보 : 대한구강악안면외과학회지 / 35권 / 5호 / 316 ~ 323페이지
· 저자명 : 장정록, 최근호, 박영준, 유민기, 국민석, 박홍주, 유선열, 오희균, 김방신

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.

영어초록

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.

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