Dental fluoride for children is necessary. Fluoridation of children’s teeth is an effective way to prevent cavities. Fluoride is applied to the surface of children’s teeth, which can form a protective layer on the surface of the teeth and reduce the occurrence of caries. Children’s love of sweets, poor eating habits and oral hygiene habits, and inability to clean the debris adhering to the surface of the teeth in a timely manner lead to a high incidence of dental caries. By applying fluoride, it can promote the remineralization of tooth enamel and has the effect of preventing caries. If caries still occurs after the above treatment, then you need to go to a regular hospital stomatology department, under the guidance of a professional doctor, must go to the hospital in a timely manner, to avoid delaying the treatment time.