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US 7,649,029 B2Granted
Dental compositions containing nanozirconia fillers
Assignee3M Innovative Properties Company
InventorsBrant U. Kolb, Hoa T. Bui, Jason P. Thalacker, Lani S. Kangas, Joel D. Oxman, Kenton D. Budd, Jacqueline C. Rolf, Sumita B. Mitra
Life of this patent
Estimating the term…
Abstract
The present invention features ionomer compositions containing nanozirconia fillers. The compositions can be used in a variety of dental and orthodontic applications, for example, as adhesives, cements, restoratives, coatings and sealants.
Claims28
A hardenable dental composition comprising:
- (a) a polyacid;
- (b) an acid-reactive filler;
- (c) water;
- and
- (d) a nanozirconia filler comprising:
- (i) zirconia particles having an outer surface;
- (ii) a plurality of silane-containing hydrophilic molecules attached onto the outer surface of the zirconia particles;
- and
- (iii) a plurality of silane-containing reactive molecules attached onto the outer surface of the zirconia particles.
6 more elements
A multi-part hardenable dental composition comprising:
- (a) a first part comprising a polyacid;
- (b) a second part comprising an acid-reactive filler;
- (c) water present in either or both parts;
- (d) an optional polymerizable component present in either or both parts;
- and
- (e) a nanozirconia filler present in either or both parts, the zirconia filler comprising:
- (i) zirconia particles having an outer surface,
- (ii) a plurality of silane-containing hydrophilic molecules attached onto the outer surface of the zirconia particles, and
- (iii) a plurality of silane-containing reactive molecules attached onto the outer surface of the zirconia particles.
6 more elements
Dependencies are inferred from the claim text.