Vidhya Nagarajan for NPR

No-Drill Dentistry: Fluoride Treatments Can Prevent Cavities In Adults

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Feds Say It's Time To Cut Back On Fluoride In Drinking Water

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Demonstrator China Starshine holds up signs outside of City Hall in Portland last week. Ross William Hamilton/The Oregonian/AP hide caption

toggle caption Ross William Hamilton/The Oregonian/AP

Portland, Ore., Becomes Latest Fluoride Battleground

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