Usually, the fluoride used in professional treatments is similar to the one found in fluoride toothpaste. However, professional fluoride treatments use a high concentration of fluoride in the form of a gel, foam, or varnish.
The ADA recommends the use of a pea-sized amount of fluoride toothpaste for children between 3 and 6 years of age. However, Fluoride toothpaste helps to remineralize and strengthen the tooth enamel of kids aged 6+ years.
Systemic fluoride mainly helps in forming the tooth structure. Topical fluoride, as the name suggests, is used in direct contact with the tooth surface. It strengthens the tooth and contributes to the reduction of caries incidence.