PROCESS FOR MANUFACTURING TOOTH REPLACEMENTS BY SPARK EROSION AND DEVICE FOR CLAMPING, INSERTING AND TRUING PLASTER MODELS OR COPPER ELECTRODES FOR THE SPARK-EROSION MANUFACTURE OF TOOTH REPLACEMENTS

摘要

PCT No. PCT/DE90/00798 Sec. 371 Date Apr. 23, 1992 Sec. 102(e) Date Apr. 23, 1992 PCT Filed Oct. 22, 1990 PCT Pub. No. WO88/06429 PCT Pub. Date Sep. 7, 1988.A method of making a dental prosthesis by forming a model of a tooth stump, coating with a layer of electrically conductive material, galvanically plating over the conductive material with a layer of copper, exposing occlusal surfaces of the model, coating the exposed occlusal surfaces of the model with an electrically conductive material followed by a galvanic plating on the model occlusal surfaces, and separating the copper layers form each other at about the tooth equator into an occlusal mold/electrode and a stump mold/electrode. The electrodes are used in a spark erosion process to form a dental prosthesis from a solid matrix body.