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Originally Posted by Ustwo
In that case why would the carries rate be lower in areas with fluoridated water?
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Link? And actually this would run contrary to reason. Fluoride works when it is applied topically (toothpaste, rinses), but there's no evidence (aside from outdated pseudoscience) to suggest that fluoride helps teeth when ingested.
"...laboratory and epidemiologic research suggests that fluoride prevents dental caries predominately after eruption of the tooth into the mouth, and
its actions primarily are topical for both adults and children" (CDC, 1999, MMWR 48: 933-940).
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Originally Posted by Ustwo
I think the problem is you can't easily google a study on it, but they are out there, most were done prior to everything on the net.
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Studies done in the 1940s and 50s are now outdated because they were done before any long term testing could be done to see the effects of water fluoridation.