Repositorio
Institucional

Lopez-Lazaro, Sandra

Aleman, Inmaculada#Viciano, Joan#Irurita, Javier#Botella, Miguel C.

Sexual dimorphism of the first deciduous molar: A geometric morphometric approach

ELSEVIER IRELAND LTD

FORENSIC SCIENCE INTERNATIONAL

en

Estimating the sex of immature skeletal remains is important when reconstructing the biological profile of unknown individuals in anthropological practice. Teeth have a distinct importance as they are the most frequently recovered physical elements of an individual. They persist after death due to their hardness and resistance to postmortem insults. The aim of this study was to analyse the sexual dimorphism of the occlusal surface of the first deciduous molar using geometric morphometric techniques. This study evaluated 38 first maxillary deciduous molars (21 males, 17 females) and 30 first mandibular deciduous molars (15 males, 15 females) from the Granada osteological collection of identified subadults (Granada, Spain). The landmark and semilandmark coordinates were analysed by principal components analysis, canonical variate analysis and discriminant analysis. Only the first maxillary deciduous molar showed a significant sexual dimorphism, with cross-validation values for shape variables of 93.23% for males and 83.17% for females, and 100% for males and 87.50% for females when both shape and size variables were considered. Despite there being acceptable cross-validation classification for the first mandibular deciduous molar (82.35% for males and 92.31% for females for shape variables and 82.35% for males and 92.31% for females for shape and size variables), no significant differences indicating sexual dimorphism were identified. The results show that the first upper deciduous molar can assist in sex estimation, and that geometric morphometric analysis is a suitable technique to answer questions related to shape that cannot be observed with the naked eye. (C) 2018 Elsevier B.V. All rights reserved.

Artículo original

The authors are grateful to D. Jose Antonio Munoz (Managing Director), Maribel Martin (coordinator of services) and all EMUCESA staff at the San Jose cemetery in Granada (Spain) for their invaluable assistance, as well as the Magistrate Judge (Court of First Instance no. 5) responsible for the Registry Office of Granada. The authors also thank the employees of the Laboratory of Physical Anthropology of the University of Granada who selflessly worked on the exhumation and preparation of the identified skeletal collection. The investigation was supported in part by the project CONICYT-MEC-80170077.

Los autores agradecen a D. José Antonio Muñoz (Director General), a Maribel Martín (Coordinadora de Servicios) y a todo el personal de EMUCESA en el cementerio de San José de Granada (España) por su inestimable ayuda, así como al Juez de Paz (Juzgado de Primera Instancia n.º 5) responsable del Registro Civil de Granada. Los autores también agradecen al personal del Laboratorio de Antropología Física de la Universidad de Granada, que trabajó desinteresadamente en la exhumación y preparación de la colección óseo identificada. La investigación fue financiada parcialmente por el proyecto CONICYT-MEC-80170077.

10.1016/j.forsciint.2018.06.036

pdf

Sex estimation# Deciduous dentition# Landmarks# Semilandmarks# Cross-validation

http://dx.doi.org/10.1016/j.forsciint.2018.06.036

Medicine, Legal

Estimación del sexo# dentición decidua# Puntos de referencia# Semihitos# Validación cruzada

Antropología

Otras Especilidades de la Antropología

Odontología, Cirugía y Medicina Oral

WOS:000443355600022

Sexual dimorphism of the first deciduous molar: A geometric morphometric approach

Artículo original

version publicada

ELSEVIER IRELAND LTD

FORENSIC SCIENCE INTERNATIONAL

Medicina Legal

0379-0738

en

ANID CONICYT MEC 80170077

The authors are grateful to D. Jose Antonio Munoz (Managing Director), Maribel Martin (coordinator of services) and all EMUCESA staff at the San Jose cemetery in Granada (Spain) for their invaluable assistance, as well as the Magistrate Judge (Court of First Instance no. 5) responsible for the Registry Office of Granada. The authors also thank the employees of the Laboratory of Physical Anthropology of the University of Granada who selflessly worked on the exhumation and preparation of the identified skeletal collection. The investigation was supported in part by the project CONICYT-MEC-80170077.

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