Mixed Reality-Guided System for Patient-Specific Implants in Orthognathic Surgery.

Abstract

Patient-specific implants and cutting guides in orthognathic surgery have demonstrated improved surgical precision in maxillary positioning. We present a mixed reality-assisted technique for using patient-specific implants (PSI) and dynamically transferring drilling holes and osteotomy lines, eliminating cutting guide fabrication and enhancing the efficiency of maxillary positioning during surgery. Postoperative computed tomography (CT) analysis revealed clinically acceptable maxillary deviations of less than 1.2 mm. The mixed reality-guided technique provides a novel, cutting guide-free approach to maxillary positioning, enhancing surgical accuracy, workflow efficiency, and intraoperative adaptability.