Dental prosthesis

US5849068A · kind A · utility

Assignee

• Dentsply G.m.b.H. · 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: May 1, 1997
• Grant date: Dec 15, 1998
• Expiry date: May 1, 2017

Classification

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

Abstract

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.