Application of Reverse Engineering Template for the Correction of Asymmetric Deformity of Maxillofacial Fibrous Dysplasia.

Facial asymmetry deformity is the most common symptom of patients with fibrous dysplasia. This study provides a novel method based on computed tomography scan data, mirror-imaged reverse engineering and rapid prototyping for design and manufacture of an individual template guiding accurately the extent and quantity of partial resection of hyperplastic tissues to reshape the affected bones during operation. Ten adult patients with unilateral facial fibrous dysplasia accepted these treatments, the postoperative appearances showed that the protrusions were effectively reduced; bilateral faces were basically symmetric with no serious complications. This method shorts operation time, decreases surgical risk, and guarantees the aesthetic symmetry. Apparent recurrence was not observed during the follow-up period, and the final outcomes were satisfactory for both surgeons and patients.