Fluoride is a dental prevention strategy that helps strengthen the teeth and prevent decay. The fluoride is applied to the teeth with a small brush. Fluoride works by restoring minerals to tooth surfaces where bacteria may have eroded the enamel. It can also inhibit the growth of harmful oral bacteria and further prevent cavities. Fluoride cannot remove decay but, while creating a stronger outer surface to your child’s teeth, it can help stop the decay from penetrating into the deeper parts of teeth. Keep in mind that fluoride varnish treatments cannot completely prevent cavities. This treatment best helps prevent decay when combined with brushing, flossing regularly, getting regular dental care, and eating a healthy diet.