Evaluation of the Accuracy of Virtual Planning in Orthognathic Surgery: A Morphometric Study

• Published in: The Journal of craniofacial surgery Vol. 30; no. 4; pp. 1214 - 1220
• Main Authors: Zavattero, Emanuele, Romano, Michele, Gerbino, Giovanni, Rossi, Diego Sergio, Giannì, Aldo Bruno, Ramieri, Guglielmo, Baj, Alessandro
• Format: Journal Article
• Language: English
• Published: United States 01-06-2019
• ISSN: 1049-2275; 1536-3732
• DOI: 10.1097/SCS.0000000000005355

The purpose of this study was to prospectively test the accuracy of computer-aided orthognathic surgery comparing the virtual surgical planning with the three-dimensional (3D) outcome.
Patients that underwent computer-assisted orthognathic surgery were retrospectively evaluated. The postoperative results were compared with the surgical plan, superimposing the postoperative computed tomography (CT) scan onto the virtual plan. Surface-based superimpositioning of the postoperative CT scan onto the 3D preoperative plan was carried out to visualize the discrepancy between preoperative virtual plan and postoperative 3D CT result.
A total of 17 consecutive patients that underwent two-jaw computer-assisted orthognathic surgery were enrolled in the study.The average linear differences for selected points were <1 mm in 12 patients out of 17. In 5 patients out of 17, the average differences for selected points were <2 mm.
An overall high degree of accuracy between the virtual plan and the postoperative result was found.