Hydrogen peroxide-releasing tooth powder

• US 4,812,308 A
• Filed: 02/20/1987
• Issued: 03/14/1989
• Est. Priority Date: 02/20/1987
• Status: Expired due to Term

• Current Assignee: Church & Dwight Company Incorporated
• Original Assignee: Church & Dwight Company Incorporated
• Inventors: Marder, Herman, Sorenson, Wayne, Winston, Anthony
• Primary Examiner(s): Rose, Shep K.
• Application Number:
  US07/017,143
• Time in Patent Office: 753 Days
• Field of Search: 424/49, 424/52, 424/53
• US Class Current: 424/52
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 8/02 characterised by special physical form
• CPC Class Codes: A61K 8/19 containing inorganic ingredients
• CPC Class Codes: A61K 8/22 Peroxides; Oxygen; Ozone
• CPC Class Codes: A61Q 11/00 Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses

Abstract

A stable, palatable and safe hydrogen peroxide releasing tooth powder composition containing sodium bicarbonate and sodium percarbonate in combination with flavoring agents, sweeteners, fluoridating agents, additional abrasives, surfactants and/or additional adjuvants.

Claims

1. A tooth powder, comprising at least 40% by weight of a mixture of sodium bicarbonate and sodium percarbonate, the percarbonate being present in an amount sufficient to release from 0.5 to 5% hydrogen peroxide by weight of the tooth powder, upon contact with water.

2. The tooth powder of claim 1, wherein the sodium bicarbonate is incorporated in an amount of from 50 to 98% of the tooth powder, in the form of particles having a median particle size within the range of 74-210 microns.

3. The tooth powder of claim 1, wherein the sodium percarbonate is present in an amount of from 1 to 12% by weight of the tooth powder.

4. The tooth powder of claim 1, further comprising from 0.2 to 2% by weight of a fluoridating agent.

5. The tooth powder of claim 1, further comprising from 0.1 to 5% of a sweetener.

6. The tooth powder of claim 1, further comprising from 0.2 to 3.0% by weight of a flavoring agent.

7. The tooth powder of claim 1, further comprising from 1 to 50% by weight of a secondary abrasive.

8. The tooth powder of claim 1, further comprising up to 1% by weight of a flow aid.

9. The tooth powder of claim 1, comprising:

space="preserve" listing-type="tabular">______________________________________ sodium bicarbonate 48 to 98% sodium percarbonate 1 to 12% fluoridating agent 0.2 to 2% flavoring agent 0.2 to 3% sweetener 0.1 to 5 secondary abrasive 0 to 50% surfactant 0 to 3% ______________________________________

10. The tooth powder of claim 1, comprising:

space="preserve" listing-type="tabular">______________________________________ sodium bicarbonate 89 to 94% sodium percarbonate 4 to 6% flavoring agent 1 to 2% sweetener 1 to 2% flow aid 0 to 1% ______________________________________

12. The method of claim 9, wherein the sodium bicarbonate is incorporated in an amount of from 50 to 98% of the tooth powder, in the form of particles having a median particle size within the range of 74 to 210 microns.

13. The method of claim 9, wherein the sodium percarbonate is present in an amount of from 1 to 12% by weight of the tooth powder.

14. The method of claim 9, wherein the tooth powder further comprises from 0.2 to 2% by weight of a fluoridating agent.

15. The method of claim 9, wherein the tooth powder further comprises from 0.1 to 5% of a sweetener.

16. The method of claim 9, wherein the tooth powder further comprises from 0.20 to 3.0% by weight of a flavoring agent.

17. The method of claim 9, wherein the tooth powder further comprises from 1 to 50% by weight of a secondary abrasive.

18. The method of claim 9, wherein the tooth powder further comprises from 0.1 to 0.2% by weight of a flow aid.

19. The method of claim 9, wherein the tooth powder comprises:

space="preserve" listing-type="tabular">______________________________________ sodium bicarbonate 48 to 98% sodium percarbonate 1 to 12% fluoridating agent 0.2 to 2% flavoring agent 0.2 to 3% sweetener 0.1 to 5% secondary abrasive 0 to 50% surfactant 0 to 3% ______________________________________

20. The method of claim 9, wherein the tooth powder comprises:

space="preserve" listing-type="tabular">______________________________________ sodium bicarbonate 89 to 94% sodium percarbonate 4 to 6% flavoring agent 1 to 2% sweetener 1 to 2% flow aid 0 to 1% ______________________________________

11. A method of cleaning the teeth and gums, comprising applying a tooth powder to the teeth and gums, said tooth powder comprising at least 40% by weight of a mixture of sodium bicarbonate and sodium percarbonate, the percarbonate being present in an amount sufficient to release from 0.5 to 5% hydrogen peroxide by weight of the tooth powder, upon contact with water.