1 Jiangsu Key Laboratory of Digital Medical Equipment Technology, College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
2 Department of Prosthodontics, Peking University School of Stomatology, Beijing 100081, China
Abstract：Dental CAD/CAM requires the ability to produce an accurate restoration efficiently and reliably. According to these special characteristics, an adaptive reconstruction algorithm to recover partially missing dental occlusion surface was proposed in this paper. The damaged dental can be designed by deforming the template dental which is in the corresponding position. By the First step, the damaged dental was segmented into interior part and exterior part based on the cavity contour information; next, a template dental was segmented into three parts by means of region segmentation strategy; after adaptive deformation, the part above the cavity was cut as the occlusion surface. Clinical experiments on three kinds of inlay demonstrated that the reconstructed occlusion surface preserved local geometric details and matched well with the preparation tooth. The algorithm provided a complete practical inlay design proposal for clinic application in dental CAD/CAM.
