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Insight Horizon Media

How long will tooth hurt after root canal?

Author

Robert Miller

Published Feb 12, 2026

How long will tooth hurt after root canal?

A successful root canal can cause mild pain for a few days. This is temporary, and should go away on its own as long as you practice good oral hygiene. You should see your dentist for a follow-up if the pain lasts longer than three days.

Can a root canal take months to heal?

Endodontists (RCT specialists) say some RCT teeth can take 6-12 months to heal, and may always feel “different”. This is normal, but if you have swelling, pain, or questions in general please call the office.

Do root canals work?

Root canal therapy is generally safe and effective, with a success rate of more than 95%. Like any other medical or dental procedure, though, a root canal can occasionally fail. This is normally due to a loose crown, tooth fracture, or new decay.

Can dentists do root canals?

All dentists are trained to carry out root canal treatments. Some dentists will refer complicated and emergency cases to an endodontist once your tooth has been assessed. Endodontists are dentists who are specialists in root canal treatment.

What is the failure rate of root canals?

As mentioned above, only about five percent of root canals fail, and sometimes it is not actually a “failure.” In cases, of teeth that have more than one root, it is possible that only one root was infected and filled.

What are symptoms of a failed root canal?

The signs of a root canal failure may include:

  • Sensitivity when biting down.
  • A pimple or boil on the jaw.
  • Discoloration of the tooth.
  • Tenderness in the gum tissue near where the root canal was performed.
  • Pain in the tooth you had treated.
  • Presence of pus-filled abscesses near the treated tooth.
  • Facial or neck swelling.

Is a tooth still alive after a root canal?

After root canal therapy, the tooth is dead. The patient will no longer feel any pain in that tooth because the nerve tissue has been removed, and the infection has been eliminated.

Is it better to have root canal or extraction?

In most cases, root canal therapy is a better way to treat an infected tooth than an extraction. However, there are exceptions, such as if the tooth has suffered extreme damage. Your dentist will carefully analyze your oral health before making a treatment recommendation.

What age is common for root canal?

At what age can you get a root canal? Dentists usually perform root canals on children ages 12 and older. However, root canals are sometimes needed for younger children depending on the damage to the tooth and which tooth needs a root canal procedure.

Can a root canal be redone twice?

A dentist can repeat root canal treatment on a tooth two or more times.