Endodontic (Root Canal) Therapy
A "root canal," or endodontic therapy, is a procedure available to save a tooth that is infected and would otherwise require extraction. There are many reasons that teeth can become infected, including: cavities, previous large fillings, crowns, cracks, trauma and extreme wear.
Root canal therapy is needed when the nerve of a tooth is affected by decay or infection. In order to save the tooth, the pulp (nerve and blood supply), bacteria and any decay are removed, and the resulting space is filled with an inert material called gutta percha. After the tooth is healed, getting a crown is recommended, because the tooth will become brittle.