Teeth may fall out first or grow in first. There is no fixed order in which teeth are lost or grown first. Some children lose their milk teeth before permanent teeth, which is more common; some children grow permanent teeth before losing milk teeth, and the permanent teeth have erupted while the milk teeth have not been lost, which is a case of retained milk teeth. From a physiological point of view, tooth loss and tooth growth can also be carried out at the same time, there is no conflict. During the child’s tooth replacement, as long as the teeth erupt normally, the jawbone development is normal, the first loss of milk teeth or first permanent teeth are not too worried. Parents should urge their children to develop proper oral cleaning habits and brush their teeth every day. Ensure that the child’s diet is nutritious and well-balanced three times a day to provide a nutritional foundation for the eruption of teeth. If your child is experiencing stagnant milk teeth, you can also bring your child to the dentist.