Three-dimensional model reconstruction for cleft lip and palate surgery

In craniofacial rectification process, most physicians conduct surgical planning through the patient´s two-dimensional cephalometry. Three-dimensional models, however, can present more reliable and instructional results, and can help evaluate craniofacial features from different angles and curve surfaces. This study focuses on reconstruction and adjustment of the three-dimensional model for patients with cleft lips and palate, and to establish soft-to-hard tissue relativity model in Le Fort I maxillary osteotomy. We proposed the spatial transformation-calibration and modeling (STCM) method to predict change of soft tissues after Le Fort I maxillary osteotomy. The preliminary case studies were done by using two data sets to help the physicians and the patients further their understanding of current conditions and approximate profiles after the forthcoming surgical operations.