Estimating age from adult occlusal wear: A modification of the miles method
Identifieur interne : 000530 ( Main/Exploration ); précédent : 000529; suivant : 000531Estimating age from adult occlusal wear: A modification of the miles method
Auteurs : Cassandra C. Gilmore [États-Unis] ; Mark N. Grote [États-Unis]Source :
- American Journal of Physical Anthropology [ 0002-9483 ] ; 2012-10.
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Abstract
The Miles method of age estimation relies on molar wear to estimate age and is widely used in bioarcheological contexts. However, because the method requires physical seriation and a sample of subadults to estimate wear rates it cannot be applied to many samples. Here, we modify the Miles method by scoring occlusal wear and estimating molar wear rates from adult wear gradients in 311 hunter‐gatherers and provide formulae to estimate the error associated with each age estimate. A check of the modified method in a subsample (n = 22) shows that interval estimates overlap in all but one case with age categories estimated from traditional methods; this suggests that the modifications have not hampered the ability of the Miles method to estimate age even in heterogeneous samples. As expected, the error increases with age and in populations with smaller sample sizes. These modifications allow the Miles method to be applied to skeletal samples of adult crania that were previously only amenable to cranial suture age estimation, and importantly, provide a measure of uncertainty for each age estimate. Am J Phys Anthropol 149:181–192, 2012. © Wiley Periodicals, Inc.
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DOI: 10.1002/ajpa.22106
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Gilmore</name><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><placeName><region type="state">Californie</region></placeName><wicri:cityArea>Department of Anthropology, University of California, Davis; Davis</wicri:cityArea></affiliation><affiliation wicri:level="2"><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Anthropology, University of California, Davis, One Shields Avenue, Davis, CA 95616</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Grote, Mark N" sort="Grote, Mark N" uniqKey="Grote M" first="Mark N." last="Grote">Mark N. 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Anthropol.</title><idno type="ISSN">0002-9483</idno><idno type="eISSN">1096-8644</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2012-10">2012-10</date><biblScope unit="volume">149</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="181">181</biblScope><biblScope unit="page" to="192">192</biblScope></imprint><idno type="ISSN">0002-9483</idno></series><idno type="istex">33B9C7DC761873F25AFEB9944747959E95011BF5</idno><idno type="DOI">10.1002/ajpa.22106</idno><idno type="ArticleID">AJPA22106</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0002-9483</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>age estimation</term><term>hunter‐gatherers</term><term>tooth wear</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The Miles method of age estimation relies on molar wear to estimate age and is widely used in bioarcheological contexts. However, because the method requires physical seriation and a sample of subadults to estimate wear rates it cannot be applied to many samples. Here, we modify the Miles method by scoring occlusal wear and estimating molar wear rates from adult wear gradients in 311 hunter‐gatherers and provide formulae to estimate the error associated with each age estimate. A check of the modified method in a subsample (n = 22) shows that interval estimates overlap in all but one case with age categories estimated from traditional methods; this suggests that the modifications have not hampered the ability of the Miles method to estimate age even in heterogeneous samples. As expected, the error increases with age and in populations with smaller sample sizes. These modifications allow the Miles method to be applied to skeletal samples of adult crania that were previously only amenable to cranial suture age estimation, and importantly, provide a measure of uncertainty for each age estimate. 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