Comparison of CSDS and Duraphat varnish
• The recommended dosage for Duraphat for children of nursery age is 0.25 ml of varnish per child. This gives a child a potential exposure to 5.56 mg of fluoride.
• For the same age group 3 full microbrush applications from one drop of 40% AgF gives a potential exposure of 1.8 mg fluoride (Background: A standard microbrush holds 0.01 ml of solution and one drop of AgF is 0.03 ml).
• If the application of 40% AgF is followed up with an application of one drop of 10% stannous fluoride the additional potential exposure is 0.73 mg fluoride.
• Summary:
• If AgF is used alone using the recommended one drop the potential exposure to fluoride is 68% lower than that from Duraphat varnish.
• If the AgF application is followed up by the application of one drop of stannous fluoride the total fluoride exposure is 54% lower than that from Duraphat varnish.