The need for intermaxillary fixation in sagittal split osteotomy setbacks with bicortical screw fixation.
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.
Choi
Byung-Ho
BH
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
Zhu
Shi-Jiang
SJ
Han
Sang-Gueon
SG
Huh
Jin-Young
JY
Kim
Byung-Yong
BY
Jung
Jae-Hyung
JH
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