Computer aided Framework Design for Digital Dentistry
AbstractThe aim of this paper is to propose a customized dental framework (coping) design system to improve artificial teeth production. First, a structure light optical scanner is used to scan the teeth model. And the registration and triangulation algorithms are used to reconstruct the scanned data to a triangular solid model. In the coping design process, the first part is to find the margin lines of the prepared abutment teeth. Then the non uniform offsetting and shelling algorithm is proposed to create the coping shell model with variable thickness. When restoring an edentulous space with a fixed partial denture that will crown the teeth adjacent to the space and bridge the gap with a pontic the restoration is referred to as a bridge. When the size or shape of coping and pontic models are not correct, some deformation tools are proposed to edit manually. Finally, the connector will be created between coping and pontic models.