Today, following the topic of the last issue, we will continue to answer some questions that are often asked by parents in the clinic. What should I do if my child’s lower row of new teeth have already grown in and the old teeth have not yet fallen out, showing a “double row of teeth”? A child’s diet is characterized by too much fine food, which often results in the new teeth coming in when the milk teeth have not yet fallen out by themselves. Generally speaking, if a lot of new teeth have erupted and the milk teeth still do not fall out, it is recommended to remove the milk teeth as soon as possible, and most of the new teeth will adjust to the normal position on their own. Why are my child’s new incisors jagged? New incisors are jagged when they first erupt. “Jaggedness” is a developmental nodule of the teeth, which will be gradually smoothed out with eating and chewing, this is not an abnormal situation and does not need to be dealt with. Why are the new teeth so yellow? Are they not well developed? It is normal for new permanent teeth to be more yellow than milk teeth because the degree of calcification of permanent teeth is higher than that of milk teeth, that is to say, the transparency of the enamel of the outermost layer of permanent teeth is better than that of milk teeth, so it is easy to show the inner layer of dentin that is yellow. However, if the discoloration is severe, please consult your dentist for identification. By understanding these common problems, I believe many parents will be able to cope with their children’s teeth changing easily.