Abstract
In this study, the CAD process of the CAD/CAM system for laminate veneer restorations was developed.Since laminate veneer restorations are used for discolored teeth, diastema and microdont, three different CAD systems were developed because their indications have a different shape of prostheses.In the case of discolored teeth, the labial surface of natural teeth should be used as the labial surface of laminate veneers.Two models before and after preparation were measured on a specially designed jig and their data were combined by a CAD program.In the other cases of diastema and microdont, the design of the labial surface was made by interpolation of several CAD points.The CAD points used measured data of abutment teeth on the CRT monitor and were input manually with a P/C mouse.S-spline interpolation was used since the function could pass the CAD points and modify the shape of the labial surface locally.In conclusion, the labial surface of various laminate veneer restorations could be made and CAM process data were obtained.
