Root Canal Treatment (RCT or endodontics) is needed when blood or nerve supply of the tooth (known as pulp of tooth) is infected because of decay (cavity) or trauma.
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. If RCT is not carried out, the infection will spread and the tooth may need to be taken out.
