The appropriate fluoride can prevent the dental caries, but too much intake will lead to dental fluorosis, osteofluorosis, etc.

• 氟化物可用于预防龋病已得到世界一直公认,但氟过量却可引起氟牙症、氟骨症等氟中毒性疾病,如何适度用氟一直是人们关心的问题。