Normally speaking, teeth that have undergone root canal treatment will not have such a reaction. Such symptoms show that there is still a certain degree of inflammation in your teeth. This needs to be carefully checked. First, you can go to the dental department to take a dental X-ray. Basically, you can see how many roots your teeth have, the filling status of each root, and whether there is inflammation in the root tip. These are all It can be seen from the film that if there is a problem, you need to consider rework and re-treat your teeth. So if you encounter such a situation, go to the hospital for follow-up as soon as possible.