Use of XRD and SEM/EDX to predict age and sex from fire-affected dental remains.
Forensic Sci Med Pathol
; 14(4): 432-441, 2018 12.
Article
em En
| MEDLINE
| ID: mdl-30229429
ABSTRACT
In fire scenarios, the application and accuracy of traditional odontological methods are often limited. Crystalline studies and elemental profiling have been evaluated for their applicability in determining biological profiles (age and sex) from human dentition, particularly fire- and heat-affected dental remains. Thirty-seven teeth were paired according to tooth type and donor age/sex for the analysis of crown and root surfaces pre- and post-incineration using X-ray diffraction (XRD) and scanning electron microscopy (SEM/EDX). In unburned crowns, carbon (C) content showed a positive correlation with age, whereas phosphorus (P) and calcium (Ca) contents showed a negative correlation with age. In unburned roots, C, P and Ca contents also showed significant changes that were opposite of those observed in the crowns. In relation to sex, females exhibited a higher C ratio than males, whereas males showed significantly higher levels of oxygen (O), P and Ca in unburned roots. Incineration resulted in an increase in the crystallite size that correlated with increasing temperature. No differences in hydroxyapatite (HA) crystallite size were found between age groups; however, unburned teeth from females exhibited a larger crystallite size than did those from males. The challenges of using XRD with a 3D sample were overcome to allow analysis of whole teeth in a nondestructive manner. Further studies may be useful in helping predict the temperature of a fire.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Raiz Dentária
/
Difração de Raios X
/
Microscopia Eletrônica de Varredura
/
Coroa do Dente
/
Incêndios
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Forensic Sci Med Pathol
Assunto da revista:
JURISPRUDENCIA
/
MEDICINA
/
PATOLOGIA
Ano de publicação:
2018
Tipo de documento:
Article
País de afiliação:
Espanha