The STL data of the dental crown, which fits the abutment model, was created using only the 3D CAD software enlarged to 100, 101, and 102 ％, and was also created from 3D scanned data and the dental CAD software with a cement space of 0, 50, and 100 μm. Using six types of STL data, wax patterns were created by the dental high-speed wax cutting machine. The dimensional accuracy of the wax patterns and the fit with the model were assessed, and then the patterns were casted and the same investigations of the cast crown were carried out. Using a specific enlargement ratio of inner and outer diameters, the inner and outer diameters closest to the designed values were obtained. The inner diameter of the wax patterns and cast crowns created from the scanned data, became smaller than the STL data of the model, even if a cement space of 100 μm was secured. The best fit was obtained at an expansion rate of 102 ％ or with a cement space of 100 μm from the fitting test. Using the best fit-designed data, there was no significant difference between a wax pattern and a cast body in the dimensional accuracy or fit test.