Analysis of the American Indian Dentition

Dental Characteristics Affinities of the Prehistoric to Modern Japanese with the East Asians, American Natives and Australo-Melanesians.

“…Among them, several studies clearly indicated that the affinity on the basis of the nonmetric trait pattern or the tooth size proportion is reliable to evaluate the phenotypic and/or phylogenetic relationships between the populations (e.g. Dahlberg, 1963, Garn et al, 1968Hanihara, K., 1976;Perzigian, 1984;Turner, 1985Turner, , 1987Turner, , 1990Harris and Rathbun, 1991). This author's study on the secular changes of dental morphology (Matsumura, 1994) demonstrated that in the mainland Japanese the tooth size proportions and frequencies of many nonmetric traits had been mostly stable over the 2,000 years from the Yayoi period to the present time, while the overall tooth sizes did not show such stability in this microevolutional lineage.…”

Morfología Dental de una Serie Prehistórica de Araucanos Provenientes de la Patagonia Argentina y su Relación Biológica con Otras Poblaciones Prehistóricas Argentinas y del Mundo

“…De esta manera, el estudio de la forma en la dentición humana ha permitido develar patrones de filiación biológica entre poblaciones antiguas e inferir procesos microevolutivos asociados a pautas de poblamiento en amplias zonas geográficas de Asia (Hanihara, 1966), Oceanía (Hanihara, 1990), y América principalmente (Dahlberg, 1963, Devoto et al, 1968, Turner, 1984y 1989, Scott & Turner 1997). …”

Three-Dimensional Measurements of the Occlusal Surface of Upper First Molars in a Modern Japanese Population

“…However, various data on the form of it have been limited to two-dimensional measurements, namely, buccolingual diame ter, mesiodistal diameter [9,16,17], pro jected outline area [6,7,13] or patterns of occlusal grooves [1,3,22], The authors obtained photographs of the occlusal surface of molars with fine moiré contour lines of 0.1 or 0.2 mm pitch [11], which can be used for three-dimensional measurements. To date the moiré method, which has been recently employed in the field of physical anthropology [20], has pitches of 2.0-5.0 mm of contour lines for measurement of rather large objects.…”