Whether or not a milk tooth can return to its place on its own when it is halfway through the permanent teeth before it is extracted needs to be decided on a case-by-case basis. Because the permanent teeth are wider than the milk teeth, it is possible for the permanent teeth to slowly come back into place after the milk teeth are removed if there is enough space between them. If the remaining space after the removal of the milk teeth cannot accommodate the permanent teeth, then the permanent teeth will more often than not fall into place. In this case, it is recommended that the child eat more hard food to promote the development of the jawbone. After the jawbone develops, its length and volume increase, and the permanent teeth may slowly return to their place. Parents can take their children to the dentist to judge, if can not return to the position, can be orthodontic treatment, the effect is better. Under normal circumstances, permanent teeth grow after the milk teeth fall out. If for some reasons the permanent teeth grow before the milk teeth fall out, the milk teeth need to be extracted in time to avoid affecting the growth of permanent teeth.