Fluoride treatment in dentistry is a preventive procedure that strengthens tooth enamel and helps protect against cavities. Dentists apply a concentrated form of fluoride—usually as a gel, foam, rinse, or varnish—directly to the teeth. This mineral works by remineralizing weakened enamel and making it more resistant to acid attacks from plaque bacteria and sugars. It also helps reduce tooth sensitivity and slow early signs of decay. The treatment is quick, painless, and especially beneficial for children, people with dry mouth, or those prone to cavities. Dentists may recommend it every few months depending on your oral health needs