Compositions and methods relating to dry dental fluoride rinses

A dental fluoride rinse system comprising:

• a) a first dry dental rinse composition comprising a means for acidifying, a means for providing a fluoride ion other than stannous fluoride, means for providing a phosphate ion, a pharmaceutically acceptable carrier or diluent means, and a buffer, wherein when the first dry dental rinse composition is mixed with water the resulting solution is about pH 3.75±0.75 and comprises greater than about 1% by weight of the fluoride ion;
• and,
• b) a second dry dental rinse composition comprising a means for providing a stannous fluoride and a pharmaceutically acceptable carrier or diluent means, wherein when the second dry dental rinse composition is mixed with a desired amount of water the resulting solution comprises between about 0.1% and 1% stannous fluoride.

A method of preparing a dental fluoride rinse comprising:

• a) mixing a first solvent with a first dry dental rinse composition comprising an acidifier, a fluoride ion source other than stannous fluoride able to provide fluoride ion when mixed with water, a phosphate ion source and a pharmaceutically acceptable carrier or diluent, to provide a first dental rinse of about pH 3.75±0.75 and comprising greater than about 1% by weight of the fluoride ion;
• and
• b) mixing a second solvent with a second dry dental rinse composition comprising stannous fluoride and a pharmaceutically acceptable carrier or diluent to provide a second dental rinse comprising between about 0.1% and 1% stannous fluoride.