RESUMO
Objective:To present our experience of the surgical treatment of maxillofacial fibrous dysplasia(FD) using surgical navigation technology.Methods:14 patients with maxillofacial FD were included.Preoperative CT scanning data were obtained and a virtual plan based on the patient's mirrored anatomy was realized.Intraoperatively,a digital reference frame was fixed rigidly to patient's forehead or mandible depending on the location of the lesion.During operation each patient and the virtual image were matched through individual registration technique.A pointing device was constantly used to determine whether the extent of resection was consistent with the preoperative design.The surgical outcome was assessed through fusion of the preoperative planning and postoperative CT reconstruction image.Results:The application of surgical navigation system enhanced the safety and the accuracy of the surgery for the resection of the focal lesion and for the recontour of the profile.There was no complications during 1-3 years follow up.Conclusion:Surgical navigation based on a virtual plan proves to be safe and accurate,and is of great value in managing maxillofacial fibrous dysplasia.