6 Votes
Does fluoride really fight cavities by 'the skin of the teeth?'
http://feeds.sciencedaily.com —
In a study that the authors describe as lending credence to the idiom, "by the skin of your teeth," scientists are reporting that the protective shield fluoride forms on teeth is up to 100 times thinner than previously believed. It raises questions about how this renowned cavity-fighter really works and could lead to better ways of protecting teeth from decay, the scientists suggest.
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