Age Effect in the Morphological Traits Performance for Sex Determination in Human Skulls and Mandibles

Galdames, Iván Suazo; Zavando, Daniela

doi:10.4067/s0717-95022012000100053

Cited by 13 publications

(5 citation statements)

References 23 publications

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“…Este resultado está de acordo com alguns autores, que em seus estudos avaliaram áreas faciais quantitativamente. (19,20,21) A utilização de diferentes métodos estatísticos teve o objetivo de diminuir a margem de erro. A utilização desses métodos ofereceu maior confiabilidade nos resultados, quando da aplicação nos casos de identificação, podendo ser utilizados em serviços de Antropologia Forense e nos Institutos Médicos Legais.…”

Section: Discussionunclassified

Estimativa Do Sexo E Idade Por Meio De Mensurações Cranianas

Almeida¹,

Reis²,

Galvão³

et al. 2015

J Dent Pub H

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Introduction: Forensic Dentistry has a great importance in the process of human identification, especially when the professional has only the cranium to analyze. The aim of this study is to verify the sex dimorphism and age estimation by the facial measurements. Materials and Methods: A sample of 150 dry skulls was studied, 80 male and 70 female, which belonged to individuals aged over 20 years old. The sex and age of the individuals were surely known. The skulls that have been studied belonged to people whose bones have not been claimed by their relatives in the determined time by the cemetery and were being sent for incineration. The following measurements have been done: frontal curve and distance between bregma and mastoid process. Results: According to the statistical analysis, there was success rate of 71.8% by logistic regression and 70% by the discriminant analysis. It was also verified the mean and confidence interval by t test and used the method of multiple linear regression to predict age, evidencing the model was not significant (p = 0.5390). Conclusion: The results enable the development of a statistical methodology to identify gender and age in future observations.

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Section: Discussionunclassified

Estimativa Do Sexo E Idade Por Meio De Mensurações Cranianas

Almeida¹,

Reis²,

Galvão³

et al. 2015

J Dent Pub H

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“…El dimorfismo sexual es una de las fuentes más notables y generalizadas de la variación fenotípica en animales y plantas, por lo cual, a despertado un alto interés en la biología evolutiva (Fairbairn & Preziosi, 1996). Las diferencias sexuales apreciables en los caracteres morfológicos de machos y hembras son un fenómeno común en muchos taxa de animales, siendo más conspicua la variación en el tamaño y la forma del cuerpo (Benítez De La Fuente et al;Gannon & Racz;Galdames & Zavando, 2012). La historia evolutiva, las vías del desarrollo y el diseño estructural son las principales restricciones de la diversificación fenotípica (Cheverud et al, 1985).…”

Section: Morfometría Tradicional Vs Morfometría Geométricaunclassified

Modelando la Varianza de la Forma: Morfometría Geométrica Aplicaciones en Biología Evolutiva

Benítez

Püschel

2014

Int. J. Morphol.

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RESUMEN: La comparación de caracteres anatómicos entre organismos ha sido un elemento central de la biología comparada. Históricamente, la clasificación taxonómica y la comprensión de la diversidad biológica se han basado en descripciones morfológicas. En base a una revolución matemática cuantitativa, el estudio de la morfología ha tenido un importante énfasis gracias al desarrollo del análisis de la forma mediante la combinación de métodos estadísticos multivariados y nuevas maneras de visualización. El objetivo de la presente revisión es dar una visión actualizada sobre los avances del estudio de la morfometría geométrica (MG) en biología evolutiva, así como introducir a temáticas en fuerte desarrollo (e.g. estabilidad del desarrollo, integración y modularidad morfológicas, entre otras). Se espera proporcionar una visión amplia del uso de la MG en biología evolutiva, destacando la necesidad de aumentar el esfuerzo de investigación en esta disciplina, junto con llamar la atención acerca de la utilidad de la MG como una herramienta efectiva, precisa, amigable y barata para cuantificar y estudiar la variación morfológica.

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“…Among skeletal regions, the pelvis is the most dimorphic anatomical structure in our species, showing a percentage of accuracy in detecting sex close to 100% 5 – 8 . However, the cranium has been the most frequently prioritized skeletal structure in archaeological and paleoanthropological contexts 9 , 10 . Several studies 11 – 14 have developed methods aiming to increase as much as possible the accuracy in determining sex from the analysis of cranial bones.…”

Section: Introductionmentioning

confidence: 99%

Mapping sexual dimorphism signal in the human cranium

Del Bove,

Menéndez,

Manzi

et al. 2023

Sci Rep

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The study of sexual dimorphism in human crania has important applications in the fields of human evolution and human osteology. Current, the identification of sex from cranial morphology relies on manual visual inspection of identifiable anatomical features, which can lead to bias due to user’s expertise. We developed a landmark-based approach to automatically map the sexual dimorphism signal on the human cranium. We used a sex-known sample of 228 individuals from different geographical locations to identify which cranial regions are most sexually dimorphic taking into account shape, form and size. Our results, which align with standard protocols, show that glabellar and supraciliary regions, the mastoid process and the nasal region are the most sexually dimorphic traits (with an accuracy of 73%). The accuracy increased to 77% if they were considered together. Surprisingly the occipital external protuberance resulted to be not sexually dimorphic but mainly related to variations in size. Our approach here applied could be expanded to map other variable signals on skeletal morphology.

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Age Effect in the Morphological Traits Performance for Sex Determination in Human Skulls and Mandibles

Cited by 13 publications

References 23 publications

Estimativa Do Sexo E Idade Por Meio De Mensurações Cranianas

Estimativa Do Sexo E Idade Por Meio De Mensurações Cranianas

Modelando la Varianza de la Forma: Morfometría Geométrica Aplicaciones en Biología Evolutiva

Mapping sexual dimorphism signal in the human cranium

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