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US 2022/0313403 A1Published application
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.
Claims20
A dental stone powder comprising:
- (a) a binder;
- (b) fibers selected from organic fibers, inorganic fibers and combinations thereof;
- (c) a filler;
- (d) a plasticizer;
- and
- (e) a pigment.
3 more elements
A method of making a fiber-reinforced dental stone model, the method comprising:
- (a) blending dry components comprising a binder and fiberglass fibers to form a homogeneous dental stone powder;
- (b) mixing the dental stone powder with water at a weight ratio from about 1 to about 5 of the water to the dental stone powder to form a dental stone mixture;
- (c) pouring the dental stone mixture into an impression mold;
- and
- (d) setting the dental stone mixture in the impression mold.
2 more elements
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) from about 0.01% to about 1% fiberglass by weight of the dental stone powder.
Dependencies are inferred from the claim text.