The teeth of the Indians of Pecos Pueblo

Nelson, Carl T.

doi:10.1002/ajpa.1330230303

Cited by 100 publications

(31 citation statements)

References 5 publications

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“…In view of the well-known overall morphometric variability that characterizes third molars (Nelson, 1938;Thomsen, 1955;Moorrees, 1957;Jacobson, 1982;Kieser, 1990), they might have been expected to be the most variable in enamel thickness. However, the variation that is manifest in the morphology of the enamel cap does not appear to affect its thickness to the same extent.…”

Section: Relative Size Of the Enamel Capmentioning

confidence: 99%

“…There is a well-documented tendency for modern humans to exhibit a reduction in M3 crown size, and in most populations, M2 tends to be smaller than M1 (e.g., Nelson, 1938;Seipel, 1946;Thomsen, 1955;Moorrees, 1957;Jacobson, 1982;Kieser, 1990). The reduction in size of the more distal (especially M3) crowns would seem to be attained primarily through a differential loss of their dentine components.…”

Section: Molar Enamel Thickness Crown Size Reduction and Masticatormentioning

confidence: 99%

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Enamel thickness of deciduous and permanent molars in modern Homo sapiens

Grine

2004

American J Phys Anthropol

128

156

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This study presents data on the enamel thickness of deciduous (dm2) and permanent (M1-M3) molars for a geographically diverse sample of modern humans. Measurements were recorded from sections through the mesial cusps of unworn teeth. Enamel is significantly thinner on deciduous than on permanent molars, and there is a distinct trend for enamel to increase in relative thickness from M1 to M3. The relatively thicker enamel of M2s and especially M3s can be related to the overall reduction in size of more distal molar crowns, which has been attained through a differential loss of the dentine component. Enamel tends to be thicker on the protocone than on the paracone, and thicker on the protoconid than on the metaconid, but its distribution is not wholly concordant with models that predict increased thickness as a means by which to counter heavier attritional loss on these "functional" cusps. Indeed, the thickness of enamel tends to be more variable on cusp tips and occlusal surfaces than over the lateral aspects of cusps. The proportionately thicker enamel over the lateral aspects of the protocone and protoconid more likely serves as a means to prolong functional crown life by preventing cusp fracture, rather than being an adaptation to increase the attritional longevity of wear facets. The present data suggest that the human dentition is not predisposed to develop a helicoidal wear plane through the disposition of molar enamel thickness.

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Section: Relative Size Of the Enamel Capmentioning

confidence: 99%

Section: Molar Enamel Thickness Crown Size Reduction and Masticatormentioning

confidence: 99%

Enamel thickness of deciduous and permanent molars in modern Homo sapiens

Grine

2004

American J Phys Anthropol

128

156

View full text Add to dashboard Cite

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“…With some notable exceptions (Wissler, 1931;Nelson, 1938;Dahlberg, 1945Dahlberg, , 1950Goldstein, 1948;Pedersen, 19491, few studies were then available which detailed the metric and morphologic variation of American Indian and Eskimo teeth.…”

mentioning

confidence: 99%

“…In terms of geographic regions, a large percentage of dental studies have focused on Arctic Aleut-Eskimos and Indian groups of the American Southwest. Considering just the Southwest, data on dental metrics and morphology have been obtained from samples of both skeletal (Nelson, 1938;Snyder, 1959;Morris, 1965;Turner, 1969;Larson, 1978;Coyne, 1981) and living (Kraus, 1959;Morris, 1965Morris, , 1967Morris, , 1981Morris et al, 1978;Dahlberg, 1963;Snyder et al, 1969;Sofaer et al, 1972;Scott, 1973Scott, , 1977Scott and Dahlberg, 1982) populations.…”

mentioning

confidence: 99%

The dental morphology of Pima Indians

Scott

Potter

Noss

et al. 1983

American J Phys Anthropol

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Fourteen morphologic crown traits were observed in a sample of 1528 Pima Indians of south-central Arizona. Pima dentitions are characterized by high frequencies of shoveling, incisor winging, the hypocone, the lower canine distal accessory ridge, cusp 6, and the protostylid. They exhibit low frequencies of the metaconule and lower premolar multiple lingual cusps and moderate frequencies of the canine tubercle, Carabelli's trait, cusp 7, and lower second molars with four cusps and X groove patterns. When Pima crown trait frequencies were compared to those of 13 Southwest Indian samples, their closest affinities were to other Uto-Aztecan groups, the Papago and Hopi. The Pima are most divergent from Athapaskans and are also clearly removed from Yuman speaking groups and the Zuni. In general, the pattern of dental morphologic variation in the Southwest corresponds closely to linguistic divisions.

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“…They show the same percentage observed in this paper. Nelson (1938) observed in Pecos Pueblos a high frecuency too for this trait (97.80 %. ); Goldstein (1948) described 100% of shovel shape for Texas Indians and Sioux.…”

Section: Methodsmentioning

confidence: 77%

Dental Non-Metric Traits in a Pre-Conquest Sample "Calchaquí" From Argentina, South America

Bollini

Rodríguez-Flórez

Colantonio³

2009

Int. J. Morphol.

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SUMMARY:The present study was carried out with a Calchaquí human Pre-Conquest sample from Northwest of Argentina, with the aim of exploring the dental morphology patterns in this population. This study was carried out by means of a macroscopic analysis in permanent dentitions of 7 skulls. 40 dental non-mtetric traits were recorded using the ASU Dental Anthropology System. Percentages >70% was found only in 4 traits. Calchaquí sample studied here is near to these values in shovel shape expression, but the results of this study suggest that a Sinodont pattern is no clear for this sample. To conclude, the present investigation provides additional, insightful elements for a description of biological factors in the process of dental morphologic diversification associated to regional and temporal ranges in this region of Argentina.

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The teeth of the Indians of Pecos Pueblo

Cited by 100 publications

References 5 publications

Enamel thickness of deciduous and permanent molars in modern Homo sapiens

Enamel thickness of deciduous and permanent molars in modern Homo sapiens

The dental morphology of Pima Indians

Dental Non-Metric Traits in a Pre-Conquest Sample "Calchaquí" From Argentina, South America

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