Method of manufacturing a dental prosthesis

US5916498A · kind A · utility

Assignee

• DENTSPLY DETREY GMBH · DE

Inventors

• Carmen Hofmann · Ottobeuren, DE
• Ludwig Gauckler · Schaffhausen, CH
• Gerhard Bayer · Raglan, AU
• Martin E. Hofmann · Ottobeuren, DE
• Atef Malash
• Peter Scharer · Zürich, CH
• Heinz Luthy · Neuchâtel, CH
• Klaus Krumbholz · Langen, DE
• Wigbert Hauner · Langen, DE
• Hansjorg Janssen · Frankfurt am Main, DE
• Ralf Janda · Bad Homburg vor der Höhe, DE

Key dates

• Filing date: Jun 15, 1998
• Grant date: Jun 29, 1999
• Expiry date: Jun 15, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B35/645
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

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.