LIQUID ORAL COMPOSITION, AND METHOD FOR IMPROVEMENT IN BACTERICIDAL ACTIVITY OF CATIONIC BACTERICIDAL AGENT

摘要

Disclosed is a liquid oral composition comprising: (A) cetylpyridinium chloride in an amount of 0.01 to 0.1 mass%; (B) sodium lauroylsarcosine in an amount of 0.02 to 0.3 mass%; and (C) a poly(oxyethylene) hydrogenated castor oil having an average molar number of ethylene oxide units added of 40 to 100 moles in such an amount that the[(A)/(B)]ratio becomes 0.3 to 3 by mass and the[(C)/((A)+(B))]ratio becomes 1.0 to 20 by mass. The liquid oral composition enables the rapid penetration of a bactericidal agent into a cariogenic biofilm to exhibit an excellent bactericidal activity on a cariogenic bacterium, is reduced in the occurrence of lees or turbidness during the storage at a lower temperature, has good appearance stability, and is effective for the prevention of dental caries.