| abstract |
A toothpaste composition comprising at least one decay preventing agent, with a fluorine-containing compound base, and at least one silica, is characterized in that the silica is constituted of particles containing a dense active silica shell and a calcium carbonate core. Use, as an abrasive or additive agent in toothpaste compositions, of composite particles containing a calcium carbonate core and a dense active silica shell, the said shell containing optionally in an adsorbed state a Ca2+ ion stabilising agent. Composite particles constituted of a calcium carbonate core and a dense active silica shell containing in adsorbed state at least one Ca2+ ion stabilising agent. |