Children’s milk teeth did not fall out of the new teeth came out, clinically known as retained milk teeth, in general, the milk teeth will fall out of their own, the milk teeth can not fall out of the hospital can be extracted. If the child’s permanent teeth grow, the milk teeth have a tendency to fall out, and the difference in time is relatively short, you can temporarily observe, do not need special treatment, you can let the child to eat some hard food, to help the milk teeth fall out, usually after a period of time will fall out of their own milk teeth. If a child’s milk teeth do not fall out, the root resorption of the milk teeth is slow, and the loosening of the milk teeth is slow, it is recommended that the retained milk teeth be extracted with the help of a physician, so as not to affect the eruption of the permanent teeth, resulting in irregularities in the alignment of the permanent teeth, and so on. If a child’s milk teeth need to be extracted, it should be done in a regular dental hospital.