If you are cavity prone, try neem toothpaste!

neem toothpaste - for cavity prone teeth
Philippines
December 5, 2007 3:50am CST
This flowering green tree grows all over India and in the warmer climates in the US. herbalists call its oil a pharmacy in a bottle!One study found that neem extract was aa effective as the chemical anti-plaque ingredients found in most toothpastes! Look for it at health food stores.
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