Age estimation from the teeth using a modified Demirjian system

Journal of Forensic Sciences
Matthew R B Blenkin, Wendell Evans

Abstract

The estimation of age at time of death is often an important step in the identification of human remains. The purpose of this study was to test the applicability of the Demirjian system on a sample of the Sydney child population and to develop and test age-prediction models using a large sample of Sydney children (1624 girls, 1637 boys). The use of the Demirjian standards resulted in consistent overestimates of chronological age in children under the age of 14 by as much as a mean of 0.99 years. Of the alternative predictive models derived from the Sydney sample, those that provided the most accurate age estimates are applicable for the age ranges 2-14 years, with R-square = 0.94 and a 95% confidence interval of ±1.8 years. The Sydney-based standards provided significantly different and more accurate estimates of age for that sample when compared to the published standards of Demirjian.

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Citations

Oct 1, 2011·Forensic Science, Medicine, and Pathology·A W LakeJ W Berketa
Mar 7, 2012·Forensic Science, Medicine, and Pathology·Terumi SakuraiHitoshi Maeda
Jun 13, 2013·Journal of Forensic and Legal Medicine·Thais Torralbo LopezMaria Gabriela Haye Biazevic
Oct 26, 2013·Forensic Science, Medicine, and Pathology·John W Berketa
May 9, 2012·Forensic Science International : Synergy·Matthew Blenkin, Jane Taylor
May 19, 2012·Forensic Science International : Synergy·Stefano De LucaRoberto Cameriere
Sep 30, 2010·Forensic Science International : Synergy·Richard B Bassed, Anthony J Hill
Jan 29, 2014·American Journal of Physical Anthropology·S J AlQahtaniH M Liversidge
Oct 12, 2013·Journal of Forensic and Legal Medicine·Sara J FloodJohn McGeachie
Dec 23, 2011·American Journal of Physical Anthropology·Laura L ShackelfordLyle W Konigsberg
Feb 24, 2015·Forensic Science, Medicine, and Pathology·José Luís CarneiroHugo Filipe Violante Cardoso
Jun 7, 2016·Forensic Science International : Synergy·Phuwadon DuangtoAnak Iamaroon
Jul 19, 2016·Forensic Science International : Synergy·Daniel FranklinRoberto Cameriere
Mar 5, 2018·International Journal of Legal Medicine·P DuangtoA Iamaroon
Feb 10, 2021·Forensic Science International : Synergy·Marco CummaudoCristina Cattaneo

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