Mandibular Medial Osteotomy Modifications and Postoperative Stability

This study aims to evaluate and compare the effects of two different medial mandibularosteotomy modifications, namely the Hunsuck and Posnick techniques, on postoperativeskeletal stability and relapse in patients undergoing orthognathic surgery.Patients who meet the study eligibility criteria and are scheduled to undergo bilateralsagittal split ramus osteotomy (BSSO) as part of orthognathic surgery will be included.Depending on the medial mandibular osteotomy technique used, patients will be evaluatedin two groups: those undergoing the Hunsuck modification and those undergoing the Posnickmodification.Preoperative and postoperative radiographic records will be evaluated to assess skeletalchanges associated with each osteotomy technique. Postoperative skeletal stability willbe assessed by comparing relevant mandibular and skeletal reference points and angularmeasurements between the preoperative, immediate postoperative, and follow‐up imagingrecords. The amount and direction of postoperative skeletal relapse will be determinedbased on changes occurring during the follow‐up period.The primary objective is to determine whether the Hunsuck and Posnick modificationsdiffer in terms of postoperative skeletal stability and relapse following orthognathicsurgery. Secondary evaluations may include assessment of the magnitude and direction ofmandibular positional changes and comparison of the radiographic outcomes between the twotechniques.The findings of this study may provide clinically relevant information regarding theinfluence of medial mandibular osteotomy design on postoperative skeletal stability andmay help guide the selection of an appropriate osteotomy technique in orthognathicsurgery.