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

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.