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@article{1066985,
author = {Benazzi, S. and Coquerelle, M. and Fiorenza, L. and Bookstein, F.L. and Katina, Stanislav and Kullmer, O.},
article_location = {USA},
article_number = {3},
doi = {http://dx.doi.org/10.1002/ajpa.21409},
keywords = {teeth; morphometrics; cervical outline; crown outline; Neanderthal},
language = {eng},
issn = {0002-9483},
journal = {American Journal of Physical Anthropology},
title = {Comparison of dental measurement systems for taxonomic assignment of first molars},
url = {http://onlinelibrary.wiley.com/doi/10.1002/ajpa.21409/abstract},
volume = {144},
year = {2011}
}
TY - JOUR
ID - 1066985
AU - Benazzi, S. - Coquerelle, M. - Fiorenza, L. - Bookstein, F.L. - Katina, Stanislav - Kullmer, O.
PY - 2011
TI - Comparison of dental measurement systems for taxonomic assignment of first molars
JF - American Journal of Physical Anthropology
VL - 144
IS - 3
SP - 342-354
EP - 342-354
PB - Wiley-Liss
SN - 00029483
KW - teeth
KW - morphometrics
KW - cervical outline
KW - crown outline
KW - Neanderthal
UR - http://onlinelibrary.wiley.com/doi/10.1002/ajpa.21409/abstract
L2 - http://onlinelibrary.wiley.com/doi/10.1002/ajpa.21409/abstract
N2 - Morphometrics of the molar crown is based traditionally on diameter measurements but is nowadays more often based on 2D image analysis of crown outlines. An alternative approach involves measurements at the level of the cervical line. We compare the information content of the two options in a three-dimensional (3D) digital sample of lower and upper first molars (M1 and M1) of modern human and Neanderthal teeth. The cervical outline for each tooth was created by digitizing the cervical line and then sectioning the tooth with a best fit plane. The crown outline was projected onto this same plane. The curves were analyzed by direct extraction of diameters, diagonals, and area and also by principal component analysis either of the residuals obtained by regressing out these measurements from the radii (shape information) or directly by the radii (size and shape information). For M1, the crown and cervical outline radii allow us to discriminate between Neanderthals and modern humans with 90% and 95% accuracy, respectively. Fairly good discrimination between the groups (80–82.5%) was also obtained using cervical measurements. With respect to M1, general overlap of the two groups was obtained by both crown and cervical measurements; however, the two taxa were differentiable by crown outline residuals (90–97%). Accordingly, while crown diameters or crown radii should be used for taxonomic analysis of unworn or slightly worn M1s, the crown outline, after regressing out size information, could be promising for taxonomic assignment of lower M1s.
ER -
BENAZZI, S., M. COQUERELLE, L. FIORENZA, F.L. BOOKSTEIN, Stanislav KATINA a O. KULLMER. Comparison of dental measurement systems for taxonomic assignment of first molars. \textit{American Journal of Physical Anthropology}. USA: Wiley-Liss, 2011, roč.~144, č.~3, s.~342-354. ISSN~0002-9483. Dostupné z: https://dx.doi.org/10.1002/ajpa.21409.
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