What to do when a tooth that has had a root canal hurts again a few years later

The tooth that has undergone root canal treatment hurts again after a few years may be secondary inflammation, and it may also be a tooth with splitting, so you can choose to undergo root canal treatment again, crown restoration, extraction and other ways.
1. Secondary inflammation: the previous root canal treatment is not complete, it is very likely that the infected pulp tissue is not completely removed, thus causing acute inflammation of the local root and pulp tissue resulting in pain, at this time it is necessary to take out the root canal filling, and then carry out root canal treatment again. After removing the filling from the tooth, the tooth will be disinfected again, and the infected pulp tissue will be completely removed before the canal is closed.
3. Split tooth: If the tooth is split and causes pain, the tooth should be restored with a crown if it can be retained. If the tooth is seriously fractured, it is necessary to extract the affected tooth in time, and then proceed to dental implant treatment after the trauma is recovered.
It is recommended that patients with tooth pain should consult a doctor in time to find out the specific causes, and choose the appropriate treatment according to the doctor’s instructions, and do not delay the condition, so as not to cause irreversible consequences.