title: Radiographic study of the broadbeach aboriginal dentition.
abstract: This study forms part of a larger anthropological investigation of the Ngaraangbal Aboriginal Tribe's ancestral burial ground at Broadbeach, Australia. It examines the dentition, records the associated pathology in a noninvasive manner, and relates this to the likely subsistence diet of the tribe. The Broadbeach osteological collection was returned for reburial in 1985; however, radiographic and photographic records of 36 adult males were available. These form the basis of our study. The pathology noted in the study sample was compared with a representative sample (n = 38) of pre-European Aboriginal remains from throughout Queensland for verification purposes only. Rates of dental pathology and injury were calculated from the radiographic and photographic records. There was a significant rate of tooth-wear related intra-bony pathology (4.0%), moderate to severe alveolar bone loss, and heavy dental attrition, of which the mandibular posterior teeth were the most severely affected. Caries prevalence (0.8%) was low for hunter-gatherer populations. A large number of molar pulp chambers had a distinctive "cruciate" morphology resulting from the formation of secondary dentine and pulp stones. Injuries and abnormalities included upper central incisor avulsion (58.3%) and taurodontism. These results support the proposal that the Ngaraangbal tribe was a hunter-gatherer population subsisting on an abrasive diet that included marine foods.
authors.affiliation: Department of Dentistry, The University of Queensland, St. Lucia, Australia.
authors.forename: M W
authors.initials: MW
authors.lastname: Elvery
authors.forename: N W
authors.initials: NW
authors.lastname: Savage
authors.forename: W B
authors.initials: WB
authors.lastname: Wood
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000885:Anthropology, Physical; D001315:Australia; D003817:Dentition; D004032:Diet; D005580:Fossils; D006801:Humans; D008297:Male; D008875:Middle Aged