Root canal treatment ( or Endodontics) is treatment carried out when the blood or nerve supply of the tooth ( known as the pulp) is infected through decay or injury. Once a tooth is decayed, the pulp becomes infected and this infection may spread through the root canal of the tooth. This will eventually lead to an abscess. If Root Canal Treatment ( RCT) is not carried out, the infection will spread and the tooth will then need to be extracted. For more information on RCT procedures go to: https://www.aae.org/patients/treatments-and-procedures/root-canals/root-canal-explained.aspx Sometimes for more complex root canal treatments, we may refer you to a specialist ( on a private basis) and we will be happy to discuss all other options prior to this. Following root canal treatment, the tooth will need to be crowned.