J Korean Assoc Maxillofac Plast Reconstr Surg.  2012 Sep;34(5):320-325.

Stability and Considerations of Total Maxillary Setback Le Fort I Osteotomy for the Correction of Maxillary Protrusion

• Lee JY
• Kim YI
• Yoon SY
• Hwang DS

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+/-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+/-0.83 mm) during T2-T1. An opening of the nasolabial angle (mean 12.58degrees) was noted.
CONCLUSION
Total maxillary setback allows combining satisfactory functional and cosmetic results for a number of carefully selected patients.

Keyword

Cone-beam computed tomography; Le Fort osteotomy

MeSH Terms

Cone-Beam Computed Tomography
Cosmetics
Humans
Maxilla
Osteotomy
Osteotomy, Le Fort
Recurrence
Cosmetics