Because of inattentive oral hygiene habits, many babies have the problem of “rotten teeth”. Some parents think that their babies will change their teeth in the future, so they choose to ignore it, but “rotten teeth” can cause great harm to babies’ health. If children can brush their teeth effectively and limit the intake of sweets and other foods that can easily rot their teeth, they can already prevent tooth decay more effectively. Of course, there are other aspects, such as flossing once before bedtime (there is a video demonstration online), rinsing the mouth after each meal, especially after drinking milk to drink more water, make sure not to contain rice, or drink milk to sleep, regular oral examination, when the new back teeth can be done to prevent rotten teeth (this is introduced on my home page), when the baby appears dental disease should be treated in a timely manner, do not delay. Of course, these should be analyzed according to the specific situation of each child, in order to make very specific recommendations.