| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing support program of data for cut processing anchor tooth opposing face of a dental prosthesis by which there is no undercut part in an axial direction of a cutting bar of an automatic cutting machine in 3D data of the anchor opposing face of a dental prothesis in a CAD/CAM system. SOLUTION: The manufacturing support program of data for cut processing anchor tooth opposing face of a dental prosthesis is constituted of a surface model making means making a surface model from the 3D data of a gypsum model including the anchor tooth, a cutting direction regulating means regulating the direction of the center axis of the cutting bar relative to the surface model, and the surface model making means for machining defining a base axis parallel to the center axis of the cutting bar in the surface model based on the 3D data, defining the plane moving coordinate of the cutting bar and changing the same to 3D data of a novel coordinate, converting the coordinate of the site becoming the undercut part to the same as the plane moving coordinate of the point where the distance from the base axis is longer than the distance from the base axis of the point where the height from the specific plane perpendicular to the base axis in the side opposite to the occlusion plane of the surface model is high and making the same the surface model. COPYRIGHT: (C)2008,JPO&INPIT
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