Dental fluoride does not cause fever in children. Dental fluoride applied under normal operation is generally harmless to the body, but if fluoride is swallowed accidentally, it may cause fluorosis. Fever in children may be caused by upper respiratory tract infection, acute gastrointestinal flu, etc., as follows. Dental fluoride has a certain preventive effect on caries, generally harmless to the body, if the operation process occurs fluoride accidentally swallowed may lead to acute fluorosis, reflex nausea, vomiting and other symptoms. The child’s fever may be caused by upper respiratory tract infection, may be accompanied by sneezing, runny nose, sore throat, cough, cough and other symptoms, may also be caused by acute gastrointestinal flu, may be accompanied by abdominal pain, diarrhea and other symptoms. There may be other reasons for your child’s fever, so it is recommended that he or she go to the hospital in time to receive early professional treatment.