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Why would a root canal tooth hurt?

I am a 30 year old male. I want to know why would a root canal tooth hurt?

4 Answers

Usually, you can have some discomfort right after the root canal treatment is done. Try not to eat on the side where the root canal-treated tooth is for a few days and if you were prescribed antibiotics, finish taking them. If the tooth was root canal treated a while ago and now it's hurting, it could be that the tooth has an infection or it's fractured. In either case, please see a dentist to have the tooth evaluated.
It’s not the tooth it’s the bone around the tooth
A root canal-treated tooth may take a few days to settle down after treatment is completed. Usually, this is because the tooth was infected and it takes some time for the inflammation to heal. Sometimes the procedure itself can cause the tooth to get irritated because we are using files and chemicals to clean the tooth. Normally, this settles down by itself in a couple of days. If your root canal continues to bother you, please check with your dentist. A tooth which is fractured or which has an extra nerve that wasn't detected when treated could continue to hurt even after initial treatment is done.
If you are referring to pain after having a root canal procedure done, it can be from an untreated acute infection, which should be treated with antibiotic. Another source can be the filling or crown left too high in the bite. This would be characterized by pain to bite or grind around on the tooth, without food in your mouth. This must be adjusted by your dentist or it will continue to get worse.