Bacteria may make their way to other parts of the body. Endodontic treatment is designed to treat painful root canals and often times there may not be any decay or cavity. The procedure involves removing the damaged (inflamed) or dead bone marrow in the canal, which is then disinfected and definitively filled in. This critical process allows the dentist to take further action to restore the function of the upper portion of the tooth: such steps include reinforcing a weakened and fragile tooth with a pin, installing a bridge or crown and the like. Surgical removal with resection occurs when the tip of the tooth root is inflamed.