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Estimativa médico-legal da idade pela proporção polpa/dente numa população portuguesa: validação do método de Cameriere em pré-molares inferiores
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Resumo(s)
Este projeto teve como objetivo validar, numa população portuguesa, o método de Cameriere aplicado aos segundos pré-molares inferiores (35 e 45), no âmbito da estimativa médico-legal da idade. A amostra populacional consistiu em 100 radiografias panorâmicas, sendo que 60 pertenciam a indivíduos do género feminino e 40 do género masculino, pacientes da Faculdade de Medicina Dentária da Universidade de Lisboa, com idades compreendidas entre os 15 e os 35 anos, perfazendo um total de 200 dentes (100 segundos pré-molares direitos e 100 segundos pré-molares esquerdos). Realizou-se a análise de cada radiografia com recurso a ferramentas de desenho e medição do programa Adobe Photoshop, aplicando o método de Cameriere, e procedeu-se ao cálculo do rácio polpa/dente, para os dentes 35 e 45. Todos os dados foram tratados estatisticamente no programa SPSS, tendo-se utilizado um nível de significância de 5%. Não foi observado qualquer tipo de relação, linear ou não, entre a idade e o rácio polpa/dente, tendo-se alcançado regressões lineares com valores do coeficiente de determinação consideravelmente reduzidos, o que indica uma baixa fiabilidade do modelo. Todavia, os resultados foram mais favoráveis no que respeita ao dente 45, sobretudo quando aplicado no género masculino. Assim, concluímos que o conhecimento do rácio polpa/dente, com base no método de Cameriere, não permite a identificação de um indivíduo no âmbito da estimativa médico-legal da idade, com recurso a radiografias panorâmicas, sendo imprescindível a realização de novos estudos, com amostras maiores e escalões etários mais alargados, de forma a fornecer respostas adequadas à questão legal e social da estimativa da idade em Medicina Dentária Forense.
The goal of this project was to validate, in a Portuguese population, the Cameriere’s method applied to the lower second premolars (35 and 45) regarding the forensic estimate of age. The population sample consisted in 100 panoramic radiographs, where 60 were male samples and 40 were female samples, of patients from Faculty of Dental Medicine of the University of Lisbon, whose ages were between 15 and 35 years old. This made for a total of 200 teeth (100 second right premolars and 100 second left premolars). Each radiograph was analysed using drawing and measurement tools featured in Adobe Photoshop, applying the Cameriere’s method, and then the pulp/tooth ratio was calculated for the 35 and 45 teeth. All data was statistically analysed with the SPSS program, using a meaningfulness level of 5%. It was not observed any kind of relation, linear or not, between age and the pulp/tooth ratio. Linear regression with considerably reduced determining coefficient values were achieved, which indicates a low reliability for this model. In this way, we conclude that the knowledge of the pulp/tooth ratio, based on the Cameriere’s method, does not allow the identification of an individual in the scope of a forensic estimate of age applied to panoramic radiograph. New studies with larger samples and broader age groups are indispensable, so as to provide adequate answers to the legal and social aspects of the estimate of age in Forensic Dentistry.
The goal of this project was to validate, in a Portuguese population, the Cameriere’s method applied to the lower second premolars (35 and 45) regarding the forensic estimate of age. The population sample consisted in 100 panoramic radiographs, where 60 were male samples and 40 were female samples, of patients from Faculty of Dental Medicine of the University of Lisbon, whose ages were between 15 and 35 years old. This made for a total of 200 teeth (100 second right premolars and 100 second left premolars). Each radiograph was analysed using drawing and measurement tools featured in Adobe Photoshop, applying the Cameriere’s method, and then the pulp/tooth ratio was calculated for the 35 and 45 teeth. All data was statistically analysed with the SPSS program, using a meaningfulness level of 5%. It was not observed any kind of relation, linear or not, between age and the pulp/tooth ratio. Linear regression with considerably reduced determining coefficient values were achieved, which indicates a low reliability for this model. In this way, we conclude that the knowledge of the pulp/tooth ratio, based on the Cameriere’s method, does not allow the identification of an individual in the scope of a forensic estimate of age applied to panoramic radiograph. New studies with larger samples and broader age groups are indispensable, so as to provide adequate answers to the legal and social aspects of the estimate of age in Forensic Dentistry.
Descrição
Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2016
Palavras-chave
Medicina dentária forense Identificação humana Pré-molares Teses de mestrado - 2016