A root canal, or endodontic therapy, is necessary if a cavity has reached the pulp of a tooth. If you have experienced severe trauma to your tooth, a root canal may also be required. A root canal involves cleaning out and disinfecting the interior of a tooth and removing the infected pulp. We then seal the canals of the roots to prevent future bacterial invasion. Finally, the tooth is restored with a crown or filling, which provides a strong end result. This restores the tooth to normal strength and function.