title: Evaluation of early postoperative healing of pterygomaxillary region after LeFort I osteotomy with total maxillary setback movement.
abstract: OBJECTIVE
  The aims of this study were (1) to evaluate postoperative stability and (2) to examine bone healing in the pterygomaxillary region after total maxillary setback surgery to correct dentofacial deformities.
  
  
  METHODS
  A total of 27 patients with maxillary protrusion who underwent a 1-piece LeFort I osteotomy and bilateral sagittal split ramus osteotomy were evaluated. The amounts of postoperative relapse were analyzed and compared using cephalometric analysis, and the bone healing in the pterygomaxillary region was evaluated by computed tomography.
  
  
  RESULTS
  At >6 months after surgery, there was no statistically significant horizontal or vertical relapse. The tendency to relapse did not significantly increase with an extensive amount of maxillary setback. Significant osseous regeneration at the pterygomaxillary region occurred in the early phase of recovery (P < .001).
  
  
  CONCLUSIONS
  This study suggests that total maxillary setback provides a successful outcome with good stability for the correction of maxillary protrusion.
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, South Korea.
authors.forename: Jeong Joon
authors.initials: JJ
authors.lastname: Han
authors.affiliation: Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, South Korea. Electronic address: Sjhwang@snu.ac.kr.
authors.forename: Soon Jung
authors.initials: SJ
authors.lastname: Hwang
mesh_terms: D000328:Adult; D002508:Cephalometry; D005260:Female; D006801:Humans; D008297:Male; D019767:Maxillofacial Abnormalities / Q000000981:diagnostic imaging / Q000601:surgery*; D019340:Osteotomy, Le Fort; D059229:Osteotomy, Sagittal Split Ramus; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014945:Wound Healing