During the stage when a 6-year-old child’s milk teeth are falling out and permanent teeth are erupting, if the milk teeth do not fall out naturally and the permanent teeth have already erupted, it may be necessary to have an X-ray examination at a hospital. If it is confirmed that the permanent teeth have erupted but the milk teeth still have not fallen out, it is recommended to extract the milk teeth under local anesthesia to avoid affecting the eruption position of the permanent teeth and causing other dental alignment issues.