Clinical StudiesComputer-Assisted Distraction Osteogenesis in the Treatment of Hemifacial MicrosomiaYu, Hongbo DDS, MD; Wang, Bo DDS, MD; Wang, Minjiao DDS; Wang, Xudong DDS, MD; Shen, Steve Guofang DDS, MDAuthor Information Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Address correspondence and reprint requests to Dr Steve Guofang Shen, DDS, MD, Department of Oral and Craniomaxillofacial Surgery, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; E-mail: [email protected] Received 7 October, 2015 Accepted 20 April, 2016 HY, BW, and MW contributed equally to this paper. This work was supported by National Natural Science Foundation of China (Grant No. 81571022), Shanghai Pujiang program, and Research Fund of Medicine and Engineering of Shanghai Jiao Tong University (No. YG2013MS56). The authors report no conflicts of interest. Journal of Craniofacial Surgery: September 2016 - Volume 27 - Issue 6 - p 1539-1542 doi: 10.1097/SCS.0000000000002838 Buy Metrics Abstract Purpose: To investigate the application of computer-assisted surgical planning and virtual guide in distraction osteogenesis for patients with hemifacial microsomia. Methods: Eight patients diagnosed with unilateral hemifacial microsomia were enrolled in this study. Preoperative surgical planning and simulation were performed on three-dimensional model. Distraction was simulated on virtual model and the new morphology of the mandible was predicted. Mandibular ramus osteotomy and distractor implant was performed under the guidance of tooth-borne virtual guide. Postoperative evaluation of the intervention was performed by comparison of surgical planning and actual result. Results: Preoperative planning, simulation, osteotomy and distractor implant under the guidance of virtual guide were performed successfully on all patients. Tooth-borne guide defined the osteotomy line and accurate position of distractor. Facial symmetry was greatly improved. The osteogenesis and neomandible contour was checked by postoperative computed tomography, and a good matching with the preoperative planning was achieved. Conclusions: Computer-assisted surgical planning and intraoperative virtual guide shows its great value in improving the accuracy of distraction osteogenesis and restoring facial symmetry. It is regarded as a valuable technique in this potentially complicated procedure. © 2016 by Mutaz B. Habal, MD.