Root canal treatment (also called endodontics) is needed when the blood or nerve supply of the tooth (known as the pulp) is infected through decay or injury.
If the pulp becomes infected, the infection may spread through the root canal system of the tooth. This may eventually lead to an abscess. If root canal treatment (RCT) is not carried out, the infection will spread and the tooth may need to be taken out.
Root canal treatment is a skilled and time-consuming procedure, the aim of the treatment is to remove all infection from the root canal. The root is then cleaned and filled to prevent any further infection.
There is a link at the bottom of this page to a detailed description of root canal treatment.

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