Root canal treatment ( also known as endodontic therapy, endodontic treatment, or root canal           therapy ) is a treatment sequence for the infected pulp of a tooth which is intended to result in the   elimination of infection and the protection of the decontaminated tooth from future microbial invasion.   Root canals, and their associated pulp chamber, are the physical hollows within a tooth that are   naturally inhabited by nerve tissue, blood vessels and other cellular entities. Together, these items   constitute the dental pulp