title: The need for intermaxillary fixation in sagittal split osteotomy setbacks with bicortical screw fixation.
abstract: OBJECTIVE
  The aim of this study was to decide whether use of bicortical screw fixation provides sufficient stability to dispense with intermaxillary fixation (IMF).
  
  
  METHODS
  Eighty-six patients who had undergone surgical setback of the mandible using bilateral sagittal split ramus osteotomies were examined. Group 1 (15 patients) received miniplate fixation with IMF for 6 weeks, and group 2 (71 patients) received bicortical screw fixation and immediate postoperative function. The 2 groups were evaluated radiographically for postsurgical changes of the pogonion 24 months postoperatively.
  
  
  RESULTS
  There was no significant difference in the magnitude of the relapse between the 2 groups over the 24-month postoperative period.
  
  
  CONCLUSIONS
  The use of bicortical screw fixation after sagittal split setback of the mandible provides sufficient stability to dispense with IMF.
authors.affiliation: Department of Oral & Maxillofacial Surgery, College of Dentistry, Yonsei University (Brain Korea 21 Project for Medical Science), Seoul, South Korea. choibh@wonju.yonsei.ac.kr
authors.forename: Byung-Ho
authors.initials: BH
authors.lastname: Choi
authors.forename: Shi-Jiang
authors.initials: SJ
authors.lastname: Zhu
authors.forename: Sang-Gueon
authors.initials: SG
authors.lastname: Han
authors.forename: Jin-Young
authors.initials: JY
authors.lastname: Huh
authors.forename: Byung-Yong
authors.initials: BY
authors.lastname: Kim
authors.forename: Jae-Hyung
authors.initials: JH
authors.lastname: Jung
mesh_terms: D000293:Adolescent; D000328:Adult; D001860:Bone Plates; D001863:Bone Screws; D002508:Cephalometry; D002680:Chin / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007103:Immobilization; D019248:Jaw Fixation Techniques; D008297:Male; D008334:Mandible / Q000601:surgery*; D019647:Oral Surgical Procedures / Q000295:instrumentation*; D010027:Osteotomy / Q000295:instrumentation; D011378:Prognathism / Q000601:surgery*; D011859:Radiography; D055502:Secondary Prevention; D013223:Statistics as Topic