What is the fluoride concentration of a 5% sodium fluoride varnish?

  • Correct answer

    22,600 ppm

  • 1,450 ppm

  • 5,000 ppm

  • 12,300 ppm

This question is one of 15 in AFK practice: Prevention, infection control and ethics. Test yourself on all of them.

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Explanations

  • A 5% NaF varnish contains about 2.26% fluoride ion, or 22,600 ppm. 5,000 ppm is a prescription-strength 1.1% NaF toothpaste, and 12,300 ppm is 1.23% APF gel.

    Source: Harris and García-Godoy, Primary Preventive Dentistry — oneguy

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