Patent ID: 8350842
Filing Date: 2013-01-08
Classification: A61C

Abstract:
1. A fabrication aiding apparatus, comprising: a shape data storing unit to store three-dimensional shape data on a model of an abutment tooth to which a dental prosthesis is applied; a margin line storing unit to store three-dimensional position information about a margin line of the model; a contour determining unit to determine three-dimensional position information about a side portion of a coping, based on the three-dimensional shape data on the model and the three-dimensional position information about the margin line of the model, on a face containing a reference axis of the model, such that a specified angle is formed between a first line existing on a side face of the coping and a second line being connected at tangent to the margin line, wherein both the first line and the second line is connected to the margin line at a point of the model, wherein the specified angle is an acute angle; and an entire circumference determining control unit to make said contour determining unit detect the three-dimensional position information about the side portion of the coping on each of a plurality of different faces containing the reference axis over an entire circumference in a direction surrounding the reference axis.