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Public Health · single question

Optimal community water fluoridation level (U.S.):

  1. 0.7 ppm
  2. 1.2 ppm
Show answer and explanation

Correct answer: A. 0.7 ppm

0.7 ppm is the current optimal fluoridation level.
  • A. Correct — current single recommended value (since 2015).
  • B. Old upper-range value; superseded by the single 0.7 ppm recommendation.

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