Objective: To evaluate the position and orientation of the mandibular proximal segment and the volume of condylar and coronoid processes in class II and III patients submitted to bimaxillary orthognathic surgery, using cone beam computed tomography scans.
Methods: Class II and III patients who underwent bimaxillary orthognathic surgery were evaluated by fusing their preoperative virtual planning and postoperative outcomes. The CBCT scans were import into Dolphin Imaging Software and the images were superimposed. The superimposition of the planned and postoperative CBCT images was performed with the voxel-based method. Results: Differences were found in condylar resorption between class II and III.
Conclusion: The displacement of the mandibular proximal segment after orthognathic surgery was negligible and supported by the condyle and coronoid process, which demonstrated with a clinically non-relevant resorption and postoperative stability.
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