Method of producing a sintered dental prosthesis

摘要

A method of producing a sintered, very high density dental prosthesis from a suspension containing noble-metal powder mixtures with bi or multimodal particle-size distribution and a mixing liquid. The suspension is molded to the desired shape and then the dental prosthesis is dried. The molded dental prosthesis is then heat-treated 5 to 45 minutes between 100 DEG and 400 DEG C., then heated with an average temperature elevation of 50 to 300 K/min. to 800 DEG C. and then brought to the sintering temperature T at 20 to 200 K/min. The sintering temperature T is between Tsolidus - 200) and Tsolidus - 70), whereby Tsolidus is the solidus temperature of the sintered alloy. The cooling-down of the dental prosthesis takes place under a vacuum or a protective gas.