The reaction of orthodontic pain usually occurs after the first braces, after each follow-up consultation, and when the braces are removed, so let’s look at the pain reaction of teeth at each stage in turn. Pain after the first braces: Some patients have no obvious pain during the treatment; most patients will have soreness and discomfort two or three days after the first braces or have pain and discomfort when biting or chewing, but can eat normally; very few patients have pain and cannot eat normally, then we will have the appropriate guidance for taking medication. Generally, it will take no more than one week for all the discomfort to disappear. Pain after each follow-up consultation: Two or three days after each follow-up consultation, the teeth will also have the discomfort mentioned above, but the degree will be less than the above. Pain when removing braces: Individual teeth will have slight pain when removing braces. In this case, the use of protective wax can effectively prevent the occurrence of mouth ulcers. Generally, the mouth can adapt to the braces in a week’s time, so there is no need to continue to use the protective wax. In addition, the pain of orthodontic treatment is also related to each individual’s sensitivity to pain and the level of mental tension. In conclusion, the pain of orthodontic treatment is acceptable for children, teenagers and adults, so there is no need to have excessive worries.