caries is a multifactorial disease, mainly including bacteria, diet; teeth and saliva, interact and correlate.
bacteria, mucin in in saliva and food residue are mixed on the tooth surface, Plaque is formed and firmly adheres to the surface and groove of teeth. The bacteria in plaque produce a lot of acid, which causes decalcification, dissolution and caries cavity formation of the enamel below. Children with more plaque also have more caries, the teeth are not in the right position, the arrangement is crowded, and it is easier to accumulate food to form plaque.
fluoride toothpaste has the effect of anti caries. If possible, you can go to the dental hospital and seal the pit and groove of your teeth with fluoride medicine.