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Lookup NU author(s): Dr Don Reid
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Histological analyses of dental development have been conducted for several decades despite few studies assessing the accuracy of such methods. Using known-period incremental features, the crown formation time and age at death of five pig-tailed macaques (Macaca nemestrina were estimated with standard histological techniques and compared with known ages. Estimates of age at death ranged from 8.6% underestimations to 15.0% overestimations, with an average 3.5% overestimate and a 7.2% average absolute difference. Several sources of error were identified relating to preparation quality and section obliquity. These results demonstrate that histological analyses of dental development involving counts and measurements of short- and long-period incremental features may yield accurate estimates, particularly in well-prepared material. Values from oblique sections (or most naturally fractured teeth) should be regarded with caution, as obliquity leads to inflated cuspal enamel formation time and underestimated imbricational formation time. Additionally, Shellis's formula for extension rate and crown formation time estimation was tested, which significantly overestimated crown formation time due to underestimated extension rate. It is suggested that Shellis' method should not be applied to teeth with short, rapid periods of development, and further study is necessary to validate this application in other material. © 2006 The Authors Journal compilation © 2006 Anatomical Society of Great Britain and Ireland.
Author(s): Smith TM, Reid DJ, Sirianni JE
Publication type: Article
Publication status: Published
Journal: Journal of Anatomy
Year: 2006
Volume: 208
Issue: 1
Pages: 125-138
Print publication date: 01/01/2006
ISSN (print): 0021-8782
ISSN (electronic): 1469-7580
Publisher: Wiley-Blackwell Publishing Ltd.
URL: http://dx.doi.org/10.1111/j.1469-7580.2006.00500.x
DOI: 10.1111/j.1469-7580.2006.00500.x
PubMed id: 16420385
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