Low-fusing temperature porcelain

Details Low-fusing temperature porcelain Low-fusing temperature porcelain

1994-12-12

1996-09-03

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 66, 501 70, 501 21, 106 35, C03C 802, C03C 3095

Patent

active

055523501

ABSTRACT:
A low-fusing temperature porcelain composition for use in dental prostheses is disclosed having a fusing temperature of about 700.degree. C..+-.50.degree. C. and a coefficient of thermal expansion compatible with a substrate of metal or ceramic. The composition includes, in weight percent of the composition, SiO.sub.2 at 57-61, Al.sub.2 O.sub.3 at 6.5-11.5, Na.sub.2 O at 10-11, K.sub.2 O at 8-16, Li.sub.2 O at 1-3, CaO at 1.5-4, BaO at 1.5-2.5, CeO.sub.2 at 0.5-2, and Tb.sub.2 O.sub.3 at 0.5-2.

REFERENCES:
patent: 4170823 (1979-10-01), Smyth et al.
patent: 4481036 (1984-11-01), Panzera
patent: 4798536 (1989-01-01), Katz
patent: 5346866 (1994-09-01), Komma et al.
patent: 5387558 (1995-02-01), Grossman
patent: 5432130 (1995-07-01), Rheinberger et al.

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