Computer Aided Simulation System for Orthognathic Surgery

The easy simulation of orthognathic surgery with high accuracy and good reliability, and the visual explanation of the prediction of surgery to patients with marillo-mandibular deformities remains a key focus in oral and maxillofacial surgery. A Computer-Aided Simulation System for Orthognathic Surgery (CASSOS) was developed by means of the technique of digital image processing, with which a detailed analysis could be performed automatically, including 71 measurements of distance, degree and ratio for frontal cephalograms and 68 measurements for lateral ones, with computer-aided diagnosis. A quantitative surgical simulation for the prediction of operations could be satisfactorily carried out for clinical use. All data and images were printed by Laserjet and color videoprinters. All procedures were finished in 20 minutes