Comparing Mandibular Segment Positioning in Orthognathic Surgery Using Virtual Planning and Patient-Specific Guides and Plates

What this Trial Is About

Researchers are evaluating different methods to improve the accuracy of mandibular positioning during orthognathic surgery, which corrects dentofacial deformities. This study focuses on comparing conventional splints, patient-specific cutting and positioning guides, and patient-specific fixation plates. The goal is to determine the best approach to reduce errors in positioning the mandibular proximal segment and to understand how these methods affect condylar changes after surgery. The study involves three groups of participants undergoing bilateral sagittal split osteotomy. One group uses only conventional intermediate and final splints during surgery. The second group uses patient-specific cutting and positioning guides, while the third group uses patient-specific cutting guides and fixation plates. These patient-specific devices are designed using virtual surgical planning to precisely transfer the surgical plan to the operation. The trial compares the accuracy and outcomes of these approaches. Participants will be assessed for mandibular condyle changes within the first week after surgery, which is the primary outcome measure. The accuracy of virtual surgical planning will also be evaluated as a secondary outcome during this period. The study includes healthy adults aged 18 to 55 with skeletal Class 2 or Class 3 malocclusion who have completed orthodontic treatment. Data collection includes postoperative CT scans and monitoring for complications. The total involvement includes surgery and immediate postoperative assessment.

Analysis of Mandibular Proximal Segment Position Using Virtual Orthognathic Surgical Planning, Individualized Guides, and Osteosynthesis Plates