Methods and compositions to increase the hardness and resistance of enamel
AssigneeThe Procter & Gamble Company
InventorsArif Ali Baig, Aaron Reed Biesbrock, Jennifer M. Kennedy, Samuel James St. John
Life of this patent
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Abstract
Teeth can be hardened and made more resistant to acid damage if treated with compositions that allow for the remineralization and demineralization of minerals found in teeth. Exchanging ions in hydroxyapatite for fluoride or other metal ions can result in teeth that are more resistant to chemical and physical insults.
Claims16
A single aqueous oral care composition for simultaneous demineralization and remineralization of at least one tooth comprising:
- a calcium source;
- a phosphate source;
- a fluoride source;
- at least 75%, by weight of the oral care composition, of water;
- wherein the composition is supersaturated relative to fluoroapatite and undersaturated relative to all calcium phosphate crystal phases selected from octacalcium phosphate, tricalcium phosphate, dicalcium phosphate dihydrate, dicalcium phosphate anhydrous, and mixtures thereof;
- and;
- wherein the pH of the composition is from about 4 to about 8.
A single aqueous oral care composition for simultaneous demineralization and remineralization of at least one tooth comprising:
- a calcium source;
- a phosphate source;
- a fluoride source;
- at least 75%, by weight of the oral care composition, of water;
- wherein the composition is supersaturated relative to fluoroapatite and undersaturated relative to hydroxyapatite;
- and;
- wherein the pH of the composition is from about 4 to about 8.
Dependencies are inferred from the claim text.