Why does toothpaste with stannous fluoride work better than sodium monofluorophosphate at preventing cavities?
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I assume that it has something to do with the conversion of hydroxyapatite to fluorohydroxyapatite, but why does the form of the fluoride salt make a difference?
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Answer:
Both types of fluoride prevent tooth decay by fortifying tooth enamel through remineralization and protection against acid erosion caused by bacteria. However, stannous fluoride is also anti-microbial, which means that it inhibits bacteria proliferation in the mouth. Bacteria leads to acid erosion; less bacteria means less acid erosion and a lower risk of tooth decay.
Sammy Gulrajani at Quora Visit the source
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