Why many countries add a minute amount of fluoride to public water supplies

Fluoride helps prevent tooth decay and makes your child's teeth stronger. — Dreamstime/TNS

Fluoride helps prevent tooth decay and makes your child’s teeth stronger. Fluoride can be found in drinking water, food and beverages, toothpaste, mouth rinses and dental treatments such as fluoride varnish.

Here are some common questions you may have about how fluoride helps keep your child’s teeth healthy.