Estimativa de idade e sexo por meio da análise fractal em adultos brasileiros: uma análise discriminante

Autores

DOI:

https://doi.org/10.33448/rsd-v10i15.22726

Palavras-chave:

Odontologia Legal; Processamento de Imagem Assistida por Computador; Determinação da Idade pelo Esqueleto; Análise para Determinação do Sexo.

Resumo

Esse estudo avaliou a acurácia da análise fractal (FA) para estimar a idade cronológica e o sexo de adultos brasileiros para investigações forenses. A amostra balanceada envolveu as radiografias cefalométricas laterais de 120 indivíduos, que foram organizadas conforme o grupo etário (20-29, 30-39, 40-49, 50-59 anos) e o sexo (masculino e feminino). Todas as análises do ramo e do ângulo mandibular foram realizadas por um examinador treinado e calibrado. Para a estimativa da idade e do sexo, utilizaram-se a regressão linear e a análise discriminante logística múltipla. Adicionalmente, verificou-se a precisão da FA a partir da diferença absoluta entre a idade real e a idade predita. Para todas as análises, um p-valor < 0,05 indicou a significância estatística. No total, a média dos valores da dimensão fractal (FD) foram de 1,49±0,10 para o ramo mandibular e de 1,48±0,09 para o ângulo mandibular. Para a discriminação do sexo e da idade, os homens tiveram melhores resultados do que as mulheres. A análise discriminante múltipla indicou que a FA distingue o sexo em 61,7% dos homens e 58,3% das mulheres. Adicionalmente, a diferença média entre a idade real e a predita foi de 9,5 anos e 10,1 anos para o sexo masculino e feminino, respectivamente. Portanto, nós observamos que a FA identificou as mudanças no padrão do trabeculado ósseo mandibular aplicáveis para se estimar a idade cronológica e o sexo em adultos brasileiros. Estudos em outras populações são necessários para investigar a acurácia da FA para a Odontologia Forense.

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Publicado

25/11/2021

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MENEZES, F. dos S.; DINÍSIO, T. de M. .; OLIVEIRA, T. F. L. de; OLIVEIRA, A. M. B. de; COSTA, C. .; MICHEL-CROSATO, E. .; BIAZEVIC, M. G. H. . Estimativa de idade e sexo por meio da análise fractal em adultos brasileiros: uma análise discriminante. Research, Society and Development, [S. l.], v. 10, n. 15, p. e240101522726, 2021. DOI: 10.33448/rsd-v10i15.22726. Disponível em: https://rsdjournal.org/index.php/rsd/article/view/22726. Acesso em: 2 jul. 2024.

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