Addition of fluorides to a community water supply, usually about 1 ppm, to reduce incidence of dental decay.
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n.
the addition of fluoride to drinking water in order to reduce dental caries. Drinking water with a fluoride ion content of one part per million is effective in reducing caries throughout life when given during the years of tooth development. See also fluorosis.
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flu·o·ri·da·tion (floor″ĭ-daґshən) treatment with fluorides; specifically, the addition of fluoride to the public water supply as part of the public health program to prevent or reduce the incidence of dental caries.Medical dictionary. 2011.