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KMID : 0360120120340050320
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Journal of the Korean Society of Maxillofacial Plastic Reconstructive Surgeons
2012 Volume.34 No. 5 p.320 ~ p.325
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Stability and Considerations of Total Maxillary Setback Le Fort I Osteotomy for the Correction of Maxillary Protrusion
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Lee Jae-Yeol
Yoon Sang-Yong
Hwang Dae-Seok
Kim Yong-Il
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Abstract
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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, $25.53{\pm}5.71$ 수식 이미지) 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 ($0.73{\pm}0.83$ 수식 이미지 mm) during T2-T1. An opening of the nasolabial angle (mean $12.58^{\circ}$ 수식 이미지) was noted.
Conclusion:Total maxillary setback allows combining satisfactory functional and cosmetic results for a number of carefully selected patients.
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KEYWORD
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Cone-beam computed tomography, Le Fort osteotomy
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