Glass powder for dental glass ionomer cement

Details Glass powder for dental glass ionomer cement Glass powder for dental glass ionomer cement

1998-12-07

2000-10-24

Group, Karl

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

106 35, C03C 3062

Patent

active

061367370

ABSTRACT:
A glass powder for dental glass ionomer cement is disclosed, comprising a fluoroaluminosilicate glass powder for dental glass ionomer cement having a specific gravity of 2.4.about.4.0, a mean particle size of 0.02.about.4 .mu.m, and a BET specific surface area of 2.5.about.6.0 m.sup.2 /g. Further, it preferably has a maximum particle size of less than 4 .mu.m and contains 10.about.21% by weight of Al.sup.3+, 9.about.21% by weight of Si.sup.4+, 1.about.20% by weight of F.sup.-, and 10.about.34% by weight in total of Sr.sup.2+ and/or Ca.sup.2+ in its components. The glass powder for dental glass ionomer cement of the invention can impart superior surface smoothness and film thickness, while utilizing superior characteristics inherent to the conventional dental glass ionomer cement, such as superior biocompatibility and adhesive strength.

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patent: 5356951 (1994-10-01), Yearn et al.
patent: 5641347 (1997-06-01), Grabowski et al.
patent: 5962550 (1999-10-01), Akahane et al.

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