| 摘要 |
An oral hygiene composition comprising a silica base, from 1 to 10% by weight of the composition of a water solouble non-toxic strontium salt, a fluoride source providing from 250 ppm to 2000 ppm of fluoride in the composition, and a dentally acceptable carrier, provided that when the strontium salt is other than strontium acetate the silica base has a BET surface area of from 50 to 400 m2/g. The composition has improved anti-sensitivity properties coupled with high levels of available fluorine.
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