Sexual dimorphism analysis in permanent human mandibular canines by geometric morphometrics
Sex estimation of unknown human remains is a common form of assessment in bioarchaeological and forensic practice. When remains are poorly preserved, teeth become important. Research regarding the use of teeth for sex estimation mainly uses odontometrics. Nevertheless, to date, few studies have aim...
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| Formato: | Articulo Comunicacion |
| Lenguaje: | Inglés |
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2024
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| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/168146 |
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I19-R120-10915-1681462024-07-30T20:04:25Z http://sedici.unlp.edu.ar/handle/10915/168146 Sexual dimorphism analysis in permanent human mandibular canines by geometric morphometrics Análisis del dimorfismo sexual en caninos mandibulares permanentes humanos mediante morfometría geométrica Garizoain, Gonzalo Cobos, Virginia Agustina 2024-07 2024-07-30T13:05:45Z en Antropología forensic odontology human remains morphometrics sex estimation odontología forense restos humanos morfometría estimación del sexo Sex estimation of unknown human remains is a common form of assessment in bioarchaeological and forensic practice. When remains are poorly preserved, teeth become important. Research regarding the use of teeth for sex estimation mainly uses odontometrics. Nevertheless, to date, few studies have aimed to systematically evaluate sexual dimorphism in tooth shape. The purpose of this study is to analyze and describe sexual dimorphism in the mandibular canine. Landmarks and semilandmarks were placed on the occlusal, mesiodistal and buccolingual views of mandibular canines of 56 individuals (37 males and 19 females) from the “Prof. Dr. Rómulo Lambre” collection. Moreover, the impact of dental wear in morphometric analyses on sexual dimorphism was explored. The shape of male and female canines differed significantly in the three views analyzed. Female canines showed a larger crown in relation to its root, while male canines showed greater roots in relation to their crown. While female canines showed a large development of the cingulum, male’s teeth exhibited less development of this trait. For these reasons, this study constitutes a first approach to show the usefulness of shape for estimating the sex of canine teeth. These differences might be the result of dissimilarities in the total amount of dentin and enamel due to the effect of sex-linked genes in the growth of these tissues. La estimación del sexo de restos humanos no identificados es una tarea habitual de la práctica bioarqueológica y forense. Cuando los restos están mal preservados, los dientes cobran especial relevancia. Las investigaciones sobre el uso de la dentición para la estimación sexual utilizan principalmente la odontometría. Sin embargo, hasta la fecha se han realizado pocos estudios destinados a evaluar sistemáticamente el dimorfismo sexual en la forma de los dientes. El objetivo de este estudio es analizar y describir el dimorfismo sexual en el canino mandibular. Se colocaron landmarks y semilandmarks en vistas oclusal, mesiodistal y bucolingual de caninos mandibulares de 56 individuos (37 masculinos y 19 femeninos) de la colección “Prof. Dr. Rómulo Lambre”. Asimismo, se exploró el impacto del desgaste dental en los análisis morfométricos de dimorfismo sexual. La forma de los caninos masculinos y femeninos difirió significativamente en las tres vistas analizadas. Los caninos femeninos mostraron una corona más grande en relación con la raíz, mientras que los caninos masculinos mostraron mayores raíces en relación con la corona. Los caninos femeninos exhibieron un gran desarrollo del cíngulo y los dientes masculinos presentaron un menor desarrollo de este rasgo. El presente estudio constituye una primera aproximación para mostrar la utilidad de la forma para la estimación del sexo de los dientes caninos. Las discrepancias observadas en estas estructuras podrían ser el resultado de diferencias en la cantidad total de dentina y esmalte debido al efecto de genes ubicados en los cromosomas sexuales involucrados en el desarrollo de estos tejidos. Asociación de Antropología Biológica Argentina Articulo Comunicacion http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Antropología forensic odontology human remains morphometrics sex estimation odontología forense restos humanos morfometría estimación del sexo |
| spellingShingle |
Antropología forensic odontology human remains morphometrics sex estimation odontología forense restos humanos morfometría estimación del sexo Garizoain, Gonzalo Cobos, Virginia Agustina Sexual dimorphism analysis in permanent human mandibular canines by geometric morphometrics |
| topic_facet |
Antropología forensic odontology human remains morphometrics sex estimation odontología forense restos humanos morfometría estimación del sexo |
| description |
Sex estimation of unknown human remains is a common form of assessment in bioarchaeological and forensic practice. When remains are poorly preserved, teeth become important. Research regarding the use of teeth for sex estimation mainly uses odontometrics.
Nevertheless, to date, few studies have aimed to systematically evaluate sexual dimorphism in tooth shape. The purpose of this study is to analyze and describe sexual dimorphism in the mandibular canine. Landmarks and semilandmarks were placed on the occlusal, mesiodistal and buccolingual views of mandibular canines of 56 individuals (37 males and 19 females) from the “Prof. Dr. Rómulo Lambre” collection.
Moreover, the impact of dental wear in morphometric analyses on sexual dimorphism was explored. The shape of male and female canines differed significantly in the three views analyzed. Female canines showed a larger crown in relation to its root, while male canines showed greater roots in relation to their crown. While female canines showed a large development of the cingulum, male’s teeth exhibited less development of this trait. For these reasons, this study constitutes a first approach to show the usefulness of shape for estimating the sex of canine teeth. These differences might be the result of dissimilarities in the total amount of dentin and enamel due to the effect of sex-linked genes in the growth of these tissues. |
| format |
Articulo Comunicacion |
| author |
Garizoain, Gonzalo Cobos, Virginia Agustina |
| author_facet |
Garizoain, Gonzalo Cobos, Virginia Agustina |
| author_sort |
Garizoain, Gonzalo |
| title |
Sexual dimorphism analysis in permanent human mandibular canines by geometric
morphometrics |
| title_short |
Sexual dimorphism analysis in permanent human mandibular canines by geometric
morphometrics |
| title_full |
Sexual dimorphism analysis in permanent human mandibular canines by geometric
morphometrics |
| title_fullStr |
Sexual dimorphism analysis in permanent human mandibular canines by geometric
morphometrics |
| title_full_unstemmed |
Sexual dimorphism analysis in permanent human mandibular canines by geometric
morphometrics |
| title_sort |
sexual dimorphism analysis in permanent human mandibular canines by geometric
morphometrics |
| publishDate |
2024 |
| url |
http://sedici.unlp.edu.ar/handle/10915/168146 |
| work_keys_str_mv |
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