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A comparison of the stability of miniplate with bicortical screw fixation after sagittal split setback
1Yonsei University and Wonju Christian Hospital, Department of Oral and Maxillofacial Surgery, Kangwon-Do, South Korea.
Objective:
The objective of this study was to decide whether use of bicortical screw fixation provides sufficient stability to dispense with intermaxillary fixation.
Study Design:
Thirty consecutive patients who had undergone surgical setback of the mandible by means of bilateral sagittal split ramus osteotomies were studied. Group 1 (15 patients) had miniplate fixation with intermaxillary fixation for 6 weeks, and group 2 (15 patients) had bicortical screw fixation and immediate postoperative function. The 2 groups were evaluated radiographically for postsurgical changes of pogonion in the early (6 weeks) phase.
Results:
The results showed that there were no significant differences between the 2 groups. Overall, there was good stability in both groups.
Conclusion:
The use of bicortical screw fixation after sagittal split setback of the mandible provides sufficient stability to dispense with intermaxillary fixation.