Root canal treatment (also called ‘endodontics’) is needed when the blood or nerve supply of the tooth (called the ‘pulp’) is infected through decay or injury.

You may not feel any pain in the early stages of the infection. In some cases your tooth could darken in colour, which may mean that the nerve of the tooth has died (or is dying). This would need root canal treatment.

If the pulp becomes infected, the infection may spread through the root canal system of the tooth. This may eventually lead to an abscess.

An abscess is an inflamed area in which pus collects and can cause swelling of the tissues around the tooth. The symptoms of an abscess can range from a dull ache to severe pain, and the tooth may be tender when you bite. If root canal treatment is not done, the infection will spread and the tooth may need to be taken out.

The aim of the treatment is to remove all the infection from the root canal. The root is then cleaned and filled to prevent any further infection.

Root canal treatment is usually very successful. However, if the infection comes back, the treatment can sometimes be repeated.

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