Evaluation of the Accuracy of 3d Printed Reduction Guide in Treatment of Mandibular Fractures Using Two Different Methods of Virtual Planning

Evaluation of accuracy of surgical guide will be done using slicer and blender software with the aid of the preoperative and postoperative CT.

Preoperative planning will be merged with the new CT data to identify the accuracy of reduction.

Landmark-Based Positional Analysis was used to quantify positional accuracy of the reduced mandibular segment. Bilateral mandibular landmarks were selected to represent the spatial position of the fractured and adjacent segments. The selected landmarks included condylion (Co), gonion (Go), and mental foramen (MF), which are distributed across the mandibular ramus, angle, and body regions. linear distances to the three reference planes were recorded in millimeters. To provide a comprehensive three-dimensional representation of positional discrepancy, an asymmetry index (AI) was calculated for each bilateral landmark.

Assessment of occlusion will be done By checking the maximal intercuspal position (centric occlusion) to ensure proper occlusal relationship including molar relation, canine relation and midline centralization.

The percentage of patients suffering from occlusal disturbances will be recorded.