하악전돌증 환자의 양악 수술 시 상악골 후상방 회전이동 여부에 따른 안면부 경조직 변화량에 대한 비교 연구

김욱규; 이성탁; 김태훈; 송재민; 황대석; 정인교

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하악전돌증 환자의 양악 수술 시 상악골 후상방 회전이동 여부에 따른 안면부 경조직 변화량에 대한 비교 연구
A comparative study on the change of postoperative facial hard tissue profile after maxillary rotational surgery

대한구강악안면외과학회지 2011년 37권 4호 p.264 ~ 271

김욱규, 이성탁, 김태훈, 송재민, 황대석, 정인교,

소속 상세정보

김욱규 ( Kim Uk-Kyu ) - 부산대학교 치의학전문대학원 구강악안면외과학교실
이성탁 ( Lee Sung-Tak ) - 부산대학교 치의학전문대학원 구강악안면외과학교실
김태훈 ( Kim Tae-Hoon ) - 부산대학교 치의학전문대학원 구강악안면외과학교실
송재민 ( Song Jae-Min ) - 부산대학교 치의학전문대학원 구강악안면외과학교실
황대석 ( Hwang Dae-Seok ) - 부산대학교 치의학전문대학원 구강악안면외과학교실
정인교 ( Jung In-Kyo ) - 부산대학교 치의학전문대학원 구강악안면외과학교실

KMID : 0355620110370040264

Abstract

Purpose: This study evaluated retrospectively the postsurgical facial hard tissue profile of a Le Fort I osteotomy with/without posterior impaction and rigid internal fixation to correct mandibular prognathism. After observing a difference between the two groups, this measurement was used to pre￢pare a treatment plan for 2-jaw surgery.

Patients and Methods : Thirty patients who had undergone orthognathic surgery in Pusan National University Dental Hospital were enrolled in this study. Fifteen patients were treated using a Le Fort I osteotomy with posterior impaction and mandibular setback bilateral sagittal split ramus osteoto-my, and the other fifteen patients were treated without posterior impaction. The preoperative (T0), immediate postoperative (T1) and six-month follow-up period (T2) cephalograms were taken and difference between T1-T0 and T2-T2 was analyzed.

Results: Both groups was FH-ABp, SNB and ANB showed significant changes in the measurement, whereas only the posterior impaction group showed a change in the SN-U1, occlusal plane, posterior facial height, surgical movement difference from the L1 and B-point. There was no significant statistical change between the immediate postoperative (T1) and six-month follow-up (T2) hard tissue analysis in the two groups.

Conclusion:A Le Fort I osteotomy with posterior impaction is considerable for patients with a flat occlusal plane angle, large posterior facial height, prominent B-point, pogonion and labioversed incisal inclination if the indications are well chosen.