#root_canal  the passage in the root of a tooth through which its nerve and blood vessels enter the pulp cavity
  supertype:  #passage.anatomical_structure__passageway  a path or channel or duct through or along which something may pass; "the nasal passages"
  part of:  #pulp_cavity  the central cavity of a tooth containing the pulp (including the root canal)
     part of:  #tooth  hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense

No statement uses or specializes #root_canal; click here to add one.