The fluoride used in your dentist’s office is a much stronger concentration than that in toothpastes or fluoride mouth rinses that are available in stores, and the good news is that fluoride treatments generally take only a few minutes.
The fluoride may be in the form of a solution, gel, foam, or varnish, and is applied to the teeth with a paintbrush much like nail polish. The tooth will be slightly dried off, and fluoride will be painted on all necessary surfaces. After the treatment, you may be asked not to rinse, eat or drink for at least an hour to allow the teeth to absorb the fluoride. The fluoride varnish then remains on the teeth for a number of hours, releasing fluoride into the immediate environment and helping to protect against tooth decay.
Depending on your specific oral health situation, fluoride treatments may be recommended every three, six, or 12 months.