Root Canal Therapy
Root canal therapy is required when the cavity or decay is so large and deep that it extends into or very near the nerve chamber of the tooth.
This usually will result in an infection of the nerve. In order to prevent the infection from spreading into your jaw bone, the infected nerve chamber needs to be treated. A root canal therapy will remove infected tissue, disinfect, and fill the nerve chamber and canals. Once completed, this should prevent any further infections in this area.