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US 6,793,725 B2Granted
Premixed calcium phosphate cement pastes
AssigneeADA Foundation
InventorsLaurence C. Chow, Shozo Takagi
Life of this patent
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Abstract
A bone or dental implant material in the form of a paste includes a mixture of calcium phosphate powders, that are capable of forming hydroxyapatite, with liquid glycerol and hydroxypropyl methylcellulose and Na2HPO4. The paste will harden upon exposure to water with the time to harden controlled by the choice and ratio of constituents.
Claims10
A composition of matter for dental restoration and bone implants and restoration comprising, in combination:
- a mixture of liquid glycerol and a powdered calcium phosphate compound selected from the group consisting of tetracalcium phosphate;
- anhydrous dicalcium phosphate;
- α-tricalcium phosphate with calcium carbonate;
- dicalcium phosphate with calcium hydroxide and mixtures thereof, said mixture being free of water and in the form of a paste.
1 more element
A paste for bone and tooth restoration comprising, in combination:
- a water free mixture of liquid glycerol and powdered tetracalcium phosphate prepared from dicalcium phosphate and calcium carbonate.
Dependencies are inferred from the claim text.