Dentifrices containing zinc oxide particles

• US 5,330,748 A
• Filed: 05/19/1993
• Issued: 07/19/1994
• Est. Priority Date: 05/19/1993
• Status: Expired due to Fees

• Current Assignee: Church & Dwight Company Incorporated
• Original Assignee: Church & Dwight Company Incorporated
• Inventors: Winston, Anthony E., Joseph, Amy L., Domke, Todd W.
• Primary Examiner(s): Rose, Shep K.
• Application Number:
  US08/064,411
• Time in Patent Office: 426 Days
• Field of Search: 424/49-58, 424/641, 424/642
• US Class Current: 424/49
• CPC Class Codes: A61K 2800/413 Nanosized, i.e. having sizes below 100 nm
• CPC Class Codes: A61K 8/27 Zinc; 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
• CPC Class Codes: B82Y 5/00 Nanobiotechnology or nanomedicine, e.g. protein engineering or drug delivery

Abstract

Zinc oxide particles, preferably agglomerated, are added to dentifrices such as toothpastes, gels, or tooth powders. The dentifrices may contain other conventional ingredients such as thickeners, flow aids, flavoring and/or sweetening agents, anti-calculus agents such as a pyrophosphate salt, and/or an anti-caries agent such as sodium fluoride.

Claims

1. A dentifrice in the form of a toothpaste or tooth gel comprising:

a. an effective amount of an abrasive;

b. an effective amount of zinc oxide particles; and

c. a liquid vehicle in an amount sufficient to provide the desired consistency.

2. The dentifrice of claim 1 in the form of a toothpaste, wherein the abrasive is about 5-90%, the zinc oxide particles are about 0.1-10%, and the liquid vehicle is water in an amount of up to about 50%.

3. The dentifrice of claim 2, wherein the abrasive is about 20-60%, the zinc oxide particles are agglomerated particles present in an amount of about 1-5%, and the water is about 5-35%.

4. The dentifrice of claim 1 in the form of a gel, wherein the abrasive is about 5-90%, the zinc oxide particles are about 0.1-10%, and the liquid vehicle is water in an amount of up to about 50%.

5. The dentrifice of claim 4 wherein the abrasive is about 20-60%, the zinc oxide particles are agglomerated particles present in an amount of about 1-5%, and the water is about 5 -20%.

6. A method of preventing plaque by adding to a dentifrice selected from the group consisting of a toothpaste, and a gel, about 0.1-10% by weight of zinc oxide particles.

7. The method of claim 6, wherein the zinc oxide particles are about 1-5%.