Computer aided design and computer aided manufacture of sacrificial pattern of removable partial denture framework / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To introduce a method applied in computer aided design and computer aided manufacture (CAD-CAM) of removable partial denture framework for rehabilitating edentulous arch of Kennedy Class II and found a basis for this project.</p><p><b>METHODS</b>Point cloud data of dental stone model was obtained by laser scanning. The following processes were made drawing framework outline on the reconstructed triangle mesh model, picking up and processing its inner side data as the data of tissue surface, shelling it for 3-D model of framework, and transferring the data to rapid prototyping equipment for manufacture.</p><p><b>RESULTS</b>3-D model of the removable partial denture framework was preliminarily accomplished. The resin framework used as a sacrificial pattern was manufactured with the rapid prototyping equipment. The fit between resin framework and plaster model was good.</p><p><b>CONCLUSIONS</b>This method, as an integrated procedure including data acquisition, 3-D computer modeling and fabrication by rapid prototyping, is feasible to implement CAD-CAM of removable partial denture framework.</p>