Dentsply Detrey G.m.b.h.

Dentsply Gmbh

Peter Scharer

Klaus Krumbholz

Wigbert Hauner

Ralf Janda

Atef Malash

Heinz Luthy

Hansjorg Janssen

Gerhard Bayer

Martin E Hofmann

Carmen Hofmann

Ludwig J Gauckler

Ludwig Julius Gauckler

Carmen Hofmann, Geb Roth

A shaped, high-strength dental ceramic prothesis is made by pressing a molding composition comprising about 1-50 wt % glass particles and about 50-99 wt % ceramic particles to form a ceramic frame, veneering the frame and firing the coated frame.

Dental prosthesis

A process for manufacturing a non-metallic dental prosthesis including a ceramic frame and an esthetic ceramic veneer including the steps of: preparing the ceramic frame by press molding a composition comprising from 1 to 50 parts by weight glass particles and from 50 to 99 parts by weight ceramic particles at a molding temperature from 800 to 1300.degree. C.; applying a slurry comprising a dental ceramic veneering composition to the thus prepared ceramic frame; and firing the ceramic frame having the slurry applied thereto at a temperature lower than the molding temperature to produce said dental prosthesis. The dental ceramic veneering composition may have a melting point at least 50.degree. C. less than the molding temperature.

Method of manufacturing a dental prosthesis

A shaped, high-strength dental ceramic prosthesis is made by pressing a molding composition including from about 1 to 50 percent by weight glass particles and from about 99 to about 50 percent by weight inorganic oxide particles at a pressure of from about 10 to about 40 MPa and a temperature of from about 1000.degree. to about 1200.degree. C. Dental prostheses prepared in accordance with the invention include crowns, bridges, inlays and onlays.

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Zurich, Switzerland

Peter Scharer