Maxillofacial Plastic and Reconstructive Surgery

Korean Association of Maxillofacial Plastic and Reconstructive Surgeons (대한악안면성형재건외과학회)
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Stability and Considerations of Total Maxillary Setback Le Fort I Osteotomy for the Correction of Maxillary Protrusion

상악전돌의 치료를 위한 상악 후방이동의 안정성 및 고려사항

  • Lee, Jae-Yeol (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University) ;
  • Kim, Yong-Il (Departments of Orthodontics, School of Dentistry, Pusan National University) ;
  • Yoon, Sang-Yong (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University) ;
  • Hwang, Dae-Seok (Department of Oral and Maxillofacial Surgery, School of Dentistry, Pusan National University)
  • 이재열 (부산대학교 치의학전문대학원 구강악안면외과학교실) ;
  • 김용일 (부산대학교 치의학전문대학원 교정학교실) ;
  • 윤상용 (부산대학교 치의학전문대학원 구강악안면외과학교실) ;
  • 황대석 (부산대학교 치의학전문대학원 구강악안면외과학교실)
  • Received : 2012.07.17
  • Accepted : 2012.08.27
  • Published : 2012.09.30
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Abstract

Purpose: The purpose of this study was to evaluate the stability of the total setback of maxilla. It also discussed the surgical considerations of the procedure. Methods: The study consisted of 15 patients (mean age, $25.53{\pm}5.71$) who were treated with total setback Le Fort I osteotomy (with or without additional posterior maxillary impaction). The cone beam computed tomography was obtained before surgery (T0), 3~4 days after surgery (T1), and 6 months after surgery (T2). The surgical changes as well as the relapse of reference points in relation to the reference planes were statistically analyzed. Results: The mean maxillary setback was 2.35 mm. There were posterior movements of A-point ($0.73{\pm}0.83$ mm) during T2-T1. An opening of the nasolabial angle (mean $12.58^{\circ}$) was noted. Conclusion: Total maxillary setback allows combining satisfactory functional and cosmetic results for a number of carefully selected patients.

Keywords

References

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