Orthognathic treatment of asymmetry: two cases of "waferless" stereotactic maxillary positioning.

We present 2 cases in which navigation-guided surgery was used to correct complex facial asymmetry. The merits and challenges of using stereotactic technology to allow "waferless" positioning of the maxilla in orthognathic surgery are illustrated by patients who were operated on without the use of acrylic wafers to achieve three-dimensional correction of the maxillary deformity. Biometric assessment was made clinically and recorded with computed tomographic (CT) scanning. The operation was planned using Voxim(®) software and the operation done with the aid of the Voxim(®) navigation system.