Fluoride treatment is an effective way to strengthen teeth and reduce the risk of cavities. During your routine teeth cleaning, your hygienist applies fluoride varnish directly to your teeth, providing a protective layer that can last for several months. To maximize its benefits, it is recommended to have the varnish reapplied every 3 to 6 months. Additionally, using fluoride toothpaste at home can further enhance the protection offered by the in-office treatment. Fluoride works by preventing tooth decay through a process called remineralization, which helps rebuild eroded tooth surfaces and keeps your smile healthy.