title: Extraradicular cemental fragments in the alveolar bone of prehistoric American Indians: report of three cases.
abstract: Heretofore unreported, grossly observable structures composed of cementum were found in the superficial alveolar bone--but not attached to the tooth root--in three prehistoric American Indian skeletons from South Dakota. The macroscopic, radiographic, and histologic morphology of these fragments is described and compared with other cemental structures that occur in the alveolar process.
mesh_terms: D000539:Alveolar Process / Q000473:pathology*; D002828:Choristoma / Q000266:history*; D003739:Dental Cementum / Q000473:pathology*; D005260:Female; D049690:History, Ancient; D006801:Humans; D007198:Indians, North American; D008297:Male; D008441:Maxillary Neoplasms / Q000266:history*; D008875:Middle Aged; D010161:Paleodontology; D013023:South Dakota