Evaluation of the Accuracy of Dental Prostheses manufactured by Metal 3D Printer

Abstract

Recently, in the era of the fourth industrial revolution, the main technology trend of digital dentistry is to make dental prostheses using 3D printer. In this study, we evaluated the accuracy of dental prostheses(coping) made with metal 3D printer. The equipment used in the experiment are Cr-Co 3D printer, 3D scanner, Analysis Software(Geomagic). and Experimental process parameters are hatching(1way, cross, counterclockwise) and orientation(0 degrees, 45 degrees, 90 degrees). The 3D printing accuracy of the dental prostheses(coping) was excellent for "Hatching cross" and "Orientation 90 degrees." That is, The dental prostheses(coping) manufactured by using 3D printer has higher accuracy with higher heat emission. If the angle of orientation is less than 45 degree, the roughness of the lower part of the coping is not particularly good. and this has a negative effect on the suitability of inner side crown.