Root canal treatment is used when the pulp of a tooth becomes infected through decay or injury. The treatment removes infection, disinfects the canals and seals the tooth to reduce the risk of reinfection.
**Common questions**
*What is it?* A procedure to remove infected pulp tissue, clean the root canal system and seal the tooth.
*Does it hurt?* Modern treatment is normally carried out with local anaesthetic and should feel similar to having a filling.
*How many visits?* Often two or more visits depending on the anatomy of the tooth and severity of infection.
*What happens if I leave it?* The infection can spread and the tooth may ultimately need extraction.
**When to contact us**
- Pain on biting
- Sensitivity to hot or cold
- Swelling or gum tenderness
- History of deep decay, trauma or abscess
**S3 Dental advice:** Book an assessment if you have persistent toothache, swelling or sensitivity.