Accuracy of a Computer-Aided Surgical Simulation Protocol for Orthognathic Surgery: A Prospective Multicenter Study

摘要: Purpose The purpose of this prospective multicenter study was to assess the accuracy a computer-aided surgical simulation (CASS) protocol for orthognathic surgery. Materials and Methods CASS assessed by comparing planned outcomes with postoperative 65 consecutive patients enrolled from 3 centers. Computer-generated splints were used all patients. For genioplasty, 1 center computer-generated chin templates reposition segment only asymmetry. Standard intraoperative measurements without remaining primary outcome linear angular differences maxilla, mandible, when models registered at cranium. secondary maxillary dental midline difference between positions groups use template. latter measured mandibular body. Statistical analyses performed, reported using root mean square deviation (RMSD) Bland-Altman method assessing measurement agreement. Results In measurements, there no statistically significant among centers maxilla mandible. largest RMSDs 1.0 mm 1.5° 1.1 1.8° chin, template group showed excellent accuracy, positional RMSD orientation 2.2°. However, larger variances observed in not This anteroposterior superoinferior directions pitch yaw orientations. 0.9 mm. When body consistent results found measurements. Conclusions Using protocol, computerized plan can be transferred accurately consistently patient position mandible time provides greater repositioning than