If a school runs a fluoride rinse program, what is the typical rinse concentration and duration, and is it advised for very young children?

• A. 0.2% and rinse for 60 seconds once a week; not advised for children under 6 or until child can spit.
• B. 0.25% for 120 seconds monthly; not advised for under 6
• C. 0.5% for 60 seconds daily; advised for all ages
• D. 0.1% for 30 seconds each school day; advised for school programs only under supervision.

Answer: (A)

Fluoride rinse programs in schools are designed to deliver a small, safe topical fluoride dose to help prevent decay, while keeping ingestion risk low in a group setting. The standard approach uses a 0.2% fluoride rinse (usually sodium fluoride) swished for about 60 seconds, typically once a week. This weekly, low-concentration practice provides enamel protection without requiring daily dosing or high fluoride exposure, which helps keep safety manageable in a school environment.

The safety aspect for very young children is key. Younger kids may swallow more of the rinse, and repeated ingestion can raise the risk of fluoride-related issues. Because of that, these programs generally do not advise participation for children who are under about six years old or who cannot reliably spit out the rinse. Supervision is important to ensure they spit it out after the rinse.

Other options with higher concentrations, longer swish times, or more frequent dosing would increase ingestion risk and aren’t aligned with how school-based programs are typically implemented.