Comparison of dental measurement systems for taxonomic
assignment of first molars

J 2011

Comparison of dental measurement systems for taxonomic assignment of first molars

BENAZZI, S.; M. COQUERELLE; L. FIORENZA; F.L. BOOKSTEIN; Stanislav KATINA et al.

Základní údaje

Originální název

Comparison of dental measurement systems for taxonomic assignment of first molars

Autoři

BENAZZI, S.; M. COQUERELLE; L. FIORENZA; F.L. BOOKSTEIN; Stanislav KATINA a O. KULLMER

Vydání

American Journal of Physical Anthropology, USA, Wiley-Liss, 2011, 0002-9483

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10103 Statistics and probability

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.824

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/11:00061082

Organizační jednotka

Přírodovědecká fakulta

DOI

https://doi.org/10.1002/ajpa.21409

UT WoS

000287469900002

Klíčová slova anglicky

teeth; morphometrics; cervical outline; crown outline; Neanderthal

Štítky

AKR, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 12. 4. 2013 09:21, Ing. Andrea Mikešková

Anotace

V originále

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.

Návaznosti

CZ.1.07/2.2.00/15.0203, interní kód MU

Název: Univerzitní výuka matematiky v měnícím se světě (Akronym: Univerzitní výuka matematiky)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Univerzitní výuka matematiky v měnícím se světě, 2.2 Vysokoškolské vzdělávání

Citovat

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. American Journal of Physical Anthropology. USA: Wiley-Liss, 2011, roč. 144, č. 3, s. 342-354. ISSN 0002-9483. Dostupné z: https://doi.org/10.1002/ajpa.21409.

@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 = {https://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://doi.org/10.1002/ajpa.21409.

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