by Ethan A. Huff, staff writer

(NaturalNews) A popular mantra in American dentistry claims that topical fluoride treatments help to protect teeth from cavities by forming a protective shield on the enamel of teeth. However, a new study published in the American Chemical Society (ACS) journal Langmuir has found that the “protective layer” created by fluoride is actually 100 times thinner than previously believed, which may render it practically useless as a cavity-preventing intervention.

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