A root canal procedure is performed to save the tooth with a diseased nerve. Inside each tooth is the pulp and nerves.  The pulp provides nutrients to the tooth and nerves to the tooth. When the pulp in the tooth is diseased or injured, the pulp tissue dies. If it is not removed, the tooth gets infected and may fall.  The pulp is removed and the root canal is cleaned and sealed to protect it from any further damage. This root canal procedure is performed to save the infected tooth.