A process for producing the positional coincidence of 3D data sets in a dental CAD / CAM system

A method for constructing tooth surfaces of a present as a 3-D data set digital dental prosthesis part, using a 3-D model of a preparation region and / or a dental prosthesis and another 3-D model, which with the first 3-D having model matching areas, wherein on the first 3-D model A and the second 3-D model A 'from the matching area at least three pairs (P