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US 12,193,900 B2Granted
Dental stone powder and fiber reinforced dental stone comprising the same
AssigneeRansom & Randolph LLC
InventorDaniel Paul Nixon
Life of this patent
Estimating the term…
Abstract
Fibers, for example fiberglass fibers, are added to dental stone powders to provide for reinforced dental stones. Dental stones are made by combining dry components, including binder and fiber glass, adding water to the resulting mixture and setting the mixture in a dental mold. The dental stones are reinforced by the fibers, and allow for reduced breaking or chipping during handling.
Claims15
A dental stone powder comprising:
- (a) a binder, wherein the binder is calcium sulfate;
- (b) fibers selected from organic fibers, inorganic fibers and combinations thereof;
- (c) a filler;
- (d) a plasticizer;
- and
- (e) a pigment.
3 more elements
The dental stone powder of elaim 2claim 1, wherein the calcium sulfate is present at from about 80% to about 99.99% by weight of the dental stone powder.
A dental stone powder consisting of:
- (a) from about 80% to about 99.99% calcium sulfate, by weight of the dental stone powder;
- and
- (b) inorganic glass fibers;
- (c) quartz;
- (d) a plasticizer;
- and
- (e) a pigment selected from inorganic pigments, organic pigments and combinations thereof.
4 more elements
Dependencies are inferred from the claim text.