| 摘要 |
<p>STABLE ANTIPLAQUE DENTIFRICE WITH IMPROVED FOAMING AND FLUORIDE STABILITY A stable antiplaque dentifrice with improved foaming and flouride chemical stability containing an antiplaque quaternary ammonium compound, a betaine surfactant to improve foaming without inactivating the antibacterial and antiplaque activity of the quaternary ammonium compound, a humectant selected from the group consisting of polyethylene glycol, sorbitol and mixtures thereof, a nonionic gelling agent, such as hydroxyethylcellulose, and preferably a fluorine-containing compound capable of providing a fluoride ion,in an aqueous vehicle containing a dental abrasive. The sorbitol component, which stabilizes the betaine-quat system, also improves long term flouride chemical stability of the dentifrice. In a sole polyethylene glycol humectant, a small amount of glycerin, as low as l% may be utilized to improve long term fluoride stability, without adversely affecting the cosmetic stability of the dentifrice.</p> |
