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Medico-Legal Age Estimation in Living Individual from a Portuguese Population: Third Molar Mineralization | OMICS International | Abstract
ISSN: 2157-7145

Journal of Forensic Research
Open Access

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Research Article

Medico-Legal Age Estimation in Living Individual from a Portuguese Population: Third Molar Mineralization

Mário Silva Branco1,Dinis Pestana2,3,Cristiana Palmela Pereira 3,4,5*

1Private Dental Practitioner, Project master thesis author, Portugal

2Professor, Department of Statistics and Operation Research, Faculty of Sciences, University of Lisbon, Portugal

3Investigator from Center of Statistics and Applications of University of Lisbon (CEAUL), Portugal

4Professor, Dental School from University of Lisbon & Forensic Odontologist, South Branch from Portuguese National Institute of Legal Medicine, Portugal

5Investigator from CENCIFOR, Center of Forensic Studies, Portugal

*Corresponding Author:
Cristiana Palmela Pereira
Professor, Department of Biomaterials, School of Dentistry
University of Lisbon, Lisbon, Portugal
E-mail: [email protected]

Received date: March 07, 2012; Accepted date: April 12, 2012; Published date: April 14, 2012

Citation: Branco MS, Pestana D, Pereira CP (2012) Medico-Legal Age Estimation in Living Individual from a Portuguese Population: Third Molar Mineralization. J Forensic Res 3:149. doi:10.4172/2157-7145.1000149

Copyright: © 2012 Branco MS, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


According to the Study Group on Forensic Age Diagnostics (AGFAD), the radiological evaluation of third molar mineralization is a major criterion for chronological age estimation of living individuals. This investigation studied third molar development in 329 orthopantomograms (40.4% males) of Portuguese individuals, patients of Dental Medicine Faculty of Lisbon University, with an age range between 14,0 to 22,8 years, through five different methods (Demirjian, Haavikko, Harris and Nortjè, Kullman and Solari). The results show a better correlation, between real and estimated age, in Demirjian and Solari methods. Demirjian method was used to analyse the other results statistical variables. Third molar development occurs earlier, in average 9 months, in males, in stages D-G. In stage H there’s no significant difference. There’s no significant difference between mineralization of molars in the same arch, however, in the inter-arch comparison, the maxillary molars have a premature development, statistically different in stages F (males), G and H. The age 18 is reach in stage G and H, respectively, by females and males. Under the Portuguese Penal Code, section 19, the age is one of the factors of exceptional of criminal responsibility. For criminal pursuit, they state being minor than 16 years of age. This limit is reached for both sexes in the stadium F. However in any stage we can deduce the majority or minority in relation to the age of criminal responsibility. New studies about the influence of socioeconomic and genetic factors, in third molar development, are necessary.


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