Oral care compositions comprising chlorite and methods

• US 6,132,702 A
• Filed: 02/27/1998
• Issued: 10/17/2000
• Est. Priority Date: 02/27/1998
• Status: Expired due to Term

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Wimalasena, Rohan Lalith, Wong, Andrew Lee, Witt, Jonathan James
• Primary Examiner(s): Rose, Shep K.
• Application Number:
  US09/032,234
• Time in Patent Office: 963 Days
• Field of Search: 424/49-58, 424/661
• US Class Current: 424/53
• CPC Class Codes: A61K 8/20 Halogens; Compounds thereof
• 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

The present invention relates to oral care compositions, including therapeutic rinses, especially mouth rinses, as well as toothpaste, gels, tooth powders, chewing gums, mouth sprays, and lozenges (including breath mints), comprising at least a minimally effective amount of chlorite wherein preferably the pH of the final composition is greater than 7 and level of chlorine dioxide or chlorous acid is less than about 50 ppm, preferably is essentially free of chlorine dioxide or chlorous acid. This invention further relates to a method for treating or preventing gingivitis, plaque, periodontal disease, and/or breath malodor, and/or for the whitening of teeth, in humans or other animals, by applying a safe and effective amount of the chlorite ion composition to the oral cavity.

Claims

1. An oral care toothpaste composition consisting essentially of:

(a) greater than about 0.2%, by weight of the final composition, of chlorite ion; and

(b) a pharmaceutically-acceptable topical, toothpaste oral carrier;

wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 50 ppm and the pH of the final composition is greater than 7.

2. The composition of claim 1 wherein the composition comprises greater than about 0.4%, by weight of the composition, of chlorite ion.

3. The composition of claim 2 wherein the composition comprises greater than about 0.75%, by weight of the composition, of chlorite ion.

4. The composition of claim 3 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 25 ppm.

5. The composition of claim 4 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 10 ppm.

19. A method for the treatment or prevention of breath malodor, by administering to the oral cavity, the oral care toothpaste composition according to claim 1.

6. An oral care toothpaste composition consisting essentially of:

(a) greater than about 0.2% by weight of the final composition, of chlorite ion; and

(b) a pharmaceutically-acceptable topical, toothpaste oral carrier;

wherein the pH of the final composition is greater than 7.5.

7. The composition of claim 6 wherein the composition comprises greater than about 0.4%, by weight of the composition, of chlorite ion.

8. The composition of claim 7 wherein the composition comprises greater than about 0.75%, by weight of the composition, of chlorite ion.

9. The composition of claim 8 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 50 ppm.

10. The composition of claim 9 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 25 ppm.

11. The composition of claim 10 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 10 ppm.

12. The composition of claim 6 wherein the pH is greater than 7.6.

13. The composition of claim 12 wherein the pH is greater than 8.

14. The composition of claim 13 wherein the pH is from 8 to 10.

20. A method for the treatment or prevention of breath malodor, by administering to the oral cavity, the oral care toothpaste composition according to claim 6.

15. An oral care non-abrasive gel composition consisting essentially of:

(a) greater than about 0.2%, by weight of the final composition, of chlorite ion; and

(b) a pharmaceutically-acceptable topical, non-corasive gel, oral carrier;

wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 50 ppm and the pH of the final composition is greater than 7.

16. The composition of claim 15 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 25 ppm.

17. The composition of claim 16 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 10 ppm.

18. The composition of claim 17 wherein the gel is a subgingival gel for delivery of chlorite ion to the periodontal or subgingival pockets.

21. A method for the treatment or prevention of breath malodor, by administering to the oral cavity, the oral care non-abrasive gel composition according to claim 15.

22. An oral care toothpaste composition consisting essentially of:

(a) greater than about 0.2 chlorite ion; and

(b) a pharmaceutically-acceptable topical, toothpaste oral carrier comprising from about 0.05% to about 0.3%, by weight of the final composition, fluoride ion;

wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 50 ppm and the pH of the final composition is greater than 7.

23. The method of claim 22 wherein the composition comprises greater than about 0.75% chlorite ion.

24. The method of claim 22 wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 10 ppm.

25. An oral care toothpaste composition consisting essentially of:

(a) greater than about 0.2 chlorite ion; and

(b) a pharmaceutically-acceptable topical, toothpaste oral carrier comprising from about 0.05% to about 0.3%, by weight of the final composition, fluoride ion;

wherein the level of chlorine dioxide or chlorous acid in the final composition is less than about 50 ppm and the pH of the final composition is greater than 7.