abstract |
A zinc-containing antitartar oral product substantially free of astringency, containing as the essential agent, a zinc/polyphosphate complex having at least about a 50% water solubility, formed by the reaction or interaction of a zinc compound with a potassium or sodium polyphosphate by dissolving a zinc salt in a polyphosphate solution such as pyrophosphate, tripolyphosphate, hexametaphosphate and combinations thereof. |