Professional fluoride treatments usually only take a few minutes. The fluoride might come in the form of a gel, foam or varnish. It can be applied with a swab or brush or placed in a tray held in the mouth for a few minutes.
After the treatment is applied, don't eat or drink for at least 30 minutes to allow your teeth to absorb the fluoride and help repair microscopic areas of decay.
Depending on your oral health, your dentist might recommend fluoride treatments every 6–12 months. If you're at a higher risk of developing tooth decay, your dentist might also recommend other preventive measures, such as over-the-counter or prescription fluoride mouth rinses or gels, or an antibacterial mouth rinse.
Ask your dentist about the benefits of fluoride treatments, and keep up your daily dental hygiene regimen. They're both excellent ways to help maintain your strong, healthy smile.