The need for intermaxillary fixation in sagittal split osteotomy setbacks with bicortical screw fixation


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Abstract

ObjectiveThe aim of this study was to decide whether use of bicortical screw fixation provides sufficient stability to dispense with intermaxillary fixation (IMF).Study designEighty-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.ResultsThere was no significant difference in the magnitude of the relapse between the 2 groups over the 24-month postoperative period.ConclusionThe use of bicortical screw fixation after sagittal split setback of the mandible provides sufficient stability to dispense with IMF.

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