Natural dye indicator for dental plaque

• US 4,431,628 A
• Filed: 04/11/1980
• Issued: 02/14/1984
• Est. Priority Date: 04/07/1978
• Status: Expired due to Term

• Current Assignee: Colgate-Palmolive Company
• Original Assignee: Colgate-Palmolive Company
• Inventors: Gaffar, Maria C. S.
• Primary Examiner(s): Meyers, Albert T.
• Assistant Examiner(s): McCowin, Kathleen S.
• Application Number:
  US06/139,935
• Time in Patent Office: 1,404 Days
• Field of Search: 424/7, 424/49, 424/7.1
• US Class Current: 424/9.71
• CPC Class Codes: A61K 2800/43 Pigments; Dyes
• CPC Class Codes: A61K 8/9789 Magnoliopsida [dicotyledons]
• 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

Plaque disclosing compositions containing the natural red dye from sugar beets as the disclosant, and the process of treating the oral cavity therewith.

Claims

1. A method of identifying and locating plaque deposits in the oral cavity which comprises selectively staining said plaque formation on tooth surfaces without staining the adjacent oral tissues by means of applying to said oral cavity a plaque disclosing composition containing an effective staining amount of the red vegetable dye obtained from sugar beets consisting essentially of the red betamine color component and the yellow vulgaxanthin color component in the ratio of 1.9 to 1 whereby the plaque deposits absorb said red dye to identify the areas of plaque formation which is clearly visible to the naked eye as red-stained plaque, immediately upon contact and easily removable therefrom by rinsing.

2. A method in accordance with claim 1, wherein said disclosing composition is an aqueous solution comprising about 30-40% by weight of glycerin or propylene glycol.

3. A method in accordance with claim 1, wherein said disclosing composition is a substantially water-free, water-soluble, physiologically acceptable inert solid comprising about 40-95% by weight of a stable carrier for said sugar beet dye which is compatible with said dye and does not adversely affect the plaque disclosing properties of said dye.

4. A method in accordance with claim 3, wherein said solid is in the form of a chewable tablet and the carrier is selected from the group consisting of sorbitol and mannitol and mixtures thereof.

5. A method in accordance with claim 1, wherein said disclosing composition is in the form of an aerosol spray comprising about 5-50% non-toxic propellants.