Oral care compositions which comprise stannous and potassium salts

摘要

The present invention relates to a single phase oral care composition comprising:
a. a stannous salt delivering a stannous ion;
b. a potassium salt delivering a potassium ion wherein the potassium salt is selected from potassium nitrate, potassium gluconate, potassium citrate, potassium chloride, potassium tartrate, potassium bicarbonate, and mixtures thereof;
c. a chelant;
d. a fluoride ion source; and
e. less than 0.01% of an alkyl sulphate or an alkyl ethoxylate sulphate;
wherein the oral care composition provides a soluble fluoride ion level of greater than 50% of the total fluoride ion. The composition of the invention has been found to allow prolonged contact between stannous ion and nitrate ion in a single dentifrice without toxic effects or insoluble products. The invention further provides for the maintenance of an efficacious fluoride ion level.