Children’s milk teeth did not fall out of the new teeth grow out, you need to go to the hospital to pull out the retained milk teeth. 1. It is very common for new teeth to grow out when milk teeth do not fall out. Generally because the child’s diet is more delicate, chewing is too little, the function of the teeth has not been played, the milk teeth do not fall out, new teeth grow out of the situation. You need to take your child to the hospital in time to have the retained baby teeth extracted. If they are not extracted, it may cause permanent teeth malocclusion. 2. In daily life, parents try to let children chew more, try to eat whole fruits, which is conducive to the growth and development of jaws and teeth, and reduce the problem of retained milk teeth. Children should keep their mouth clean and hygienic, and brush their teeth twice a day. When the teeth are loose, do not lick with the tongue, so as not to affect the growth of new teeth. When children change teeth, if there are milk teeth stagnant, timely to the regular hospital for extraction, so as not to delay the eruption of new teeth, resulting in misalignment of teeth.