Root canal treatment is needed when an injury or a large cavity damages the tooth’s root. The root becomes infected or inflamed.
The dentist numbs the tooth. An opening is made through the crown of the tooth to the pulp chamber.
During root canal or endodontic treatment, the inflamed or infected pulp is removed and the inside of the tooth is carefully cleaned and disinfected, then filled and sealed with a rubber-like material called gutta-percha. Afterwards, the tooth is restored with a crown or filling for protection.