Patient: Description of the condition (onset time, main symptoms, hospital visited, etc.): I went to the hospital and asked the dentist, but he said it was fine and not to pull it out. I would like to ask if this loose milk tooth should be pulled out faster, otherwise it will make the new teeth grow odd (misaligned)? Doctor: There are two main types of cases. One], if the following four milk teeth are closely aligned and the new teeth have erupted behind the milk teeth, in this case, the milk teeth need to be extracted whether they are loose or not, in order to make the new teeth fall into place sooner. However, because the milk teeth are closely aligned, it means that the dental bed has not developed long and wide, and the new teeth are large and can only be squeezed into position crookedly, or not squeezed in still behind, and each of the four milk teeth is replaced with this result. The new teeth crooked this situation do not go to treatment, with the development of the dental bed widened, some of the uneven new ｛ permanent ｛ teeth can be self-aligned, some dental bed development is not enough, wait until about eleven years old if you can not adjust the alignment on their own like many children need to do orthodontic treatment. If the following four milk teeth start to align sparsely: 1, the milk teeth are strong, the new teeth will automatically be in place and aligned after extraction, without extraction, the new teeth will be difficult to move and grow into two rows, 2, the milk teeth are loose, there is no need to extract the milk teeth, the new teeth that grow in the back will also be aligned in place after the milk teeth fall out on their own. The new teeth that grow in the back will also align themselves after they fall out on their own. Please take a look at your child’s case and see which one it is.