Methods and compositions to improve mechanical resistance of teeth

1. A method of enhancing the indentation hardness of at least one tooth of a mammal in need thereof, said method comprising:

a) providing a composition comprising (i) from about 1 mg/L to about 500 mg/L of theobromine, theobromine salt, or theobromine double salt, (ii) at least one source of calcium, and (iii) at least one source of phosphate, wherein the pH of said composition is about 6.0 to about 8.5; and

b) topically administering said composition to said at least one tooth of said mammal,

wherein said composition is selected from the group consisting of a toothpaste, a mouthwash, dental floss, a coated dental strip, a dental varnish, a dental cement, a dental adhesive, a dental polishing paste, a tooth-bleaching agent, a cavity-filling material, a dental resin, and a chewing gum.

2. The method of claim 1 , wherein said at least one source of calcium is selected from the group consisting of calcium chloride, calcium carbonate, calcium gluconate, calcium phosphate, and combinations thereof.

3. The method of claim 1 , wherein said at least one source of phosphate is selected from the group consisting of potassium dihydrogen phosphate, dipotassium hydrogen phosphate, tripotassium phosphate, sodium dihydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, and combinations thereof.

4. The method of claim 1 , further comprising at least one isotonic agent.

5. The method of claim 4 , wherein said isotonic agent is a polyhydric alcohol.

6. The method of claim 5 , wherein said polyhydric alcohol is selected from the group consisting of xylitol, sorbitol, mannitol, maltitol, lactitol, isomalt, erythritol, arabitol, glycerol, and combinations thereof.

7. The method of claim 1 , wherein said composition further comprises at least one thickener.

8. The method of claim 7 , wherein said thickener is selected from the group consisting of methyl cellulose, carboxymethyl cellulose, ethyl cellulose, hydroxypropyl cellulose, and combinations thereof.

9. The method of claim 1 , wherein said composition further comprises an antibacterial agent, an antimicrobial agent, or combinations thereof.

10. The method of claim 9 , wherein said antibacterial agent is selected from the group consisting of triclosan, hydrogen peroxide, methyl-4-hydroxybenzoate, clove oil, and combinations thereof.

11. The method of claim 1 , for enhancing the hardness of at least one tooth, wherein said composition enhances said hardness more than a dentifrice containing 0% to about 1.1% of either sodium fluoride or sodium monofluorophosphate.

12. The method of claim 11 , wherein said composition enhances said hardness more than a dentifrice containing 0% to about 0.5% of sodium fluoride or 0% to about 0.76% sodium monofluorophosphate.

13. The method of claim 11 , wherein said composition enhances said hardness more than a dentifrice containing 0% to about 0.25% of sodium fluoride or 0% to about 0.76% sodium monofluorophosphate.

14. The method of claim 11 , wherein said composition enhances said hardness more than a dentifrice containing 0% to about 0.15% of sodium fluoride or 0% to about 0.76% sodium monofluorophosphate.

15. The method of claim 1 , wherein said enhancing further comprises deposition of new hydroxylapatite and/or calcium phosphate onto said tooth.