Fluoride foam anti-caries needs to be operated by a professional dentist, the main purpose is to form fluoride mineral on the surface of the teeth, the mineral layer is relatively acidic, there is a certain resistance to the role of fluoride at the same time fluoride can be slowly released on the surface of the teeth fluoride, caries prevention will have certain benefits. Children’s fluoride foam anti-caries is currently a safe and effective method, used more abroad, it is recommended that small children from the age of 2 years old, followed by every six months coated once, to the age of 6 years old, you can start to do the fossa closed. The key point is that in addition to the drug to prevent caries, but also to cultivate good oral hygiene habits of children, is the most effective way to prevent dental caries. It is recommended that parents help their children brush their teeth before the age of 7, three times a day, three minutes on three sides, and for children it is recommended that they brush their teeth in a circular motion.