RecruitingNot ApplicableNCT07788976

Mandibular Medial Osteotomy Modifications and Postoperative Stability

The Effect of Mandibular Medial Osteotomy Modifications on Postoperative Stability Following Orthognathic Surgery

Sponsor

Bezmialem Vakif University

Enrollment

34 participants

Start Date

Jan 1, 2026

Study Type

INTERVENTIONAL

Conditions

Orthognathic Surgical Procedures

Summary

This study aims to compare the effects of the Hunsuck and Posnick modifications of medial mandibular osteotomy on postoperative skeletal stability and relapse in patients undergoing orthognathic surgery. The study will evaluate whether the choice of medial osteotomy technique influences postoperative mandibular relapse.

Eligibility

Min Age: 18 YearsMax Age: 65 Years

Plain Language Summary

Simplified for easier understanding

This clinical trial is studying a procedure called Hunsuck Modification of Medial Mandibular Osteotomy, a procedure called Posnick Modification Group, and others for people with orthognathic surgical procedures. The study is currently recruiting participants at 1 location. People eligible for this study include aged 18 Years to 65 Years.

This summary was AI-generated to explain the trial in plain language. It is not medical advice. Always discuss eligibility with your doctor before enrolling in a clinical trial.

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Interventions

PROCEDUREsagittal split osteotomy

Bilateral sagittal split ramus osteotomy will be performed as part of orthognathic surgery to correct the planned mandibular skeletal deformity. The mandibular ramus and body will be divided using the assigned medial osteotomy modification (Hunsuck or Posnick), followed by sagittal splitting of the mandible. The distal mandibular segment will then be repositioned according to the preoperative surgical plan and stabilized using appropriate osteosynthesis. Postoperative skeletal stability and mandibular relapse will be evaluated during the follow-up period.

PROCEDUREHunsuck Modification of Medial Mandibular Osteotomy

The Hunsuck modification of the medial mandibular osteotomy will be performed during bilateral sagittal split ramus osteotomy (BSSO). The medial horizontal osteotomy will be initiated at the lingula and extended posteriorly for a short distance, according to the Hunsuck modification. The remaining steps of the BSSO will be performed using the standard surgical technique. Postoperative skeletal stability and relapse will be assessed using preoperative, immediate postoperative, and follow-up radiographic evaluations

PROCEDUREPosnick Modification Group

The Posnick modification of the medial mandibular osteotomy will be performed during bilateral sagittal split ramus osteotomy (BSSO). The medial horizontal osteotomy will be performed according to the Posnick modification, with the osteotomy design extending posteriorly along the medial aspect of the mandibular ramus as described for this technique. The remaining steps of the BSSO will be performed using the standard surgical technique. Postoperative skeletal stability and relapse will be assessed using preoperative, immediate postoperative, and follow-up radiographic evaluations.