Alumina hydrate-containing toothpaste

Details Alumina hydrate-containing toothpaste Alumina hydrate-containing toothpaste

A - Human Necessities

61

K

167/318.1

A61K 8/21 (2006.01) A61K 8/26 (2006.01) A61Q 11/00 (2006.01)

Patent

CA 1337334

This invention relates to toothpaste containing an alumina hydrate abrasive and a source of fluoride. According to the invention, there is provided a toothpaste containing a source of fluoride ions and unmilled, precipitated alumina trihydrate as an abrasive, wherein the alumina trihydrate particles have a median particle size of at least 3 micrometres. The median particle size of the alumina trihydrate is preferably below 30 micrometres, more preferably from 5 to 20 micrometres, and most preferably 8 to 12 micrometres. It has been found that the use of an unmilled alumina trihydrate, obtained by precipitation, substantially reduces the loss of available fluoride on storage whereas the use of a milled alumina trihydrate causes significant loss of available fluoride.

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