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      Potential contribution of periapical radiographic film image processing for forensic identification Translated title: Potencial contribuição do processamento digital de filme radiográfico periapical para identificação forense

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          Abstract

          ABSTRACT Periapical X-rays are the most common complementary tests in the dental clinic. The indication of image tests in forensic identification depends on the produced X-rays quality. The image processing of conventional radiographs can improve image quality. This study aimed to report the potential contribution of image processing from radiographic films by digitally edited periapical radiographs for case reporting of positive identification. The results of anthropological examinations and dental arches of the victim matched the information transferred by the family of the missing person. The antemortem and postmortem periapical radiographs were digitized on photo scanner (Hewlett-Packard Development Company, HP ScanJet G4050 Photo, United States) and images were processed in Corel PaintShop Pro X4 editing software (Corel Corporation, v14, Canada). The comparison of antemortem and postmortem periapical radiographs digital images allowed to determine 8 concordant points in the contour and delimit the maxillary sinus as well as periodontal and dental structures of the tooth 17. Identification of the individual was possible by digital editing of radiographs in computer software. Editing allowed adjusting image brightness, contrast and sharpness, color temperature and saturation of tooth-jaw structures. Such technological feature effectively contributed to positive identification performed by Forensic Dentistry.

          Translated abstract

          RESUMO As radiografias periapicais são os exames complementares mais frequentes na clínica odontológica. A indicação de exames de imagens na identificação forense depende da qualidade das radiografias produzidas. A edição digital de radiografias convencionais pode melhorar a qualidade de imagem. O presente trabalho consiste em relatar a potencial contribuição do processamento digital de filmes radiográficos através de relato de caso de identificação positiva por radiografias periapicais editadas digitalmente. Os resultados dos exames antropológicos e dos arcos dentários da vítima correspondiam às informações cedidas pelos familiares sobre a pessoa desaparecida. As radiografias periapicais antemortem e postmortem foram digitalizadas em scanner fotográfico (HP Development Company, HP ScanJet G4050 Photo, Estados Unidos) e as imagens processadas no programa de edição Corel PaintShop Pro X4 (Corel(r) Corporation, v14, Canadá). A comparação das imagens digitais das radiografias periapicais antemortem e postmortem permitiu determinar 8 pontos concordantes no contorno e delimitação do seio maxilar e das estruturas dentária e periodontal do elemento 17. A identificação do indivíduo foi possível mediante a edição digital das radiografias em programa de computador. A edição da permitiu ajustar imagens de brilho, contraste e nitidez e cores de temperatura e saturação das imagens das estruturas dento-maxilares. Esse recurso tecnológico contribuiu de forma efetiva para a identificação positiva realizada pela Odontologia Legal.

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          A look at forensic dentistry--Part 1: The role of teeth in the determination of human identity.

          Forensic dentistry can be defined in many ways. One of the more elegant definitions is simply that forensic dentistry represents the overlap between the dental and the legal professions. This two-part series presents the field of forensic dentistry by outlining two of the major aspects of the profession: human identification and bite marks. This first paper examines the use of the human dentition and surrounding structures to enable the identification of found human remains. Conventional and novel techniques are presented.
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            Distribution of caries in children: variations between and within populations.

            The rapid changes in social and economic conditions in many populations may have significant impacts on health, including child oral health. Understanding trends and variations between and within countries will assist in the development of effective preventive programs. This review aims (1) to document time-trends in child caries experience of countries with different levels of social and economic development, and (2) to compare factors affecting the caries experience of children in two contrasting countries. A time-trend analytical approach of ecological data from countries with different levels of social and economic development and individual data of the two contrasting Vietnamese and Australian child populations were used. The analysis found a significant decline in caries experience of children, mostly driven by the improvement in populations with high social and economic development. Significant variations in caries experience and in associations with risk factors between and within countries were observed. Socio-economic inequality in child oral health existed within developed countries and between countries with different levels of development. Population programs aimed at improving upstream factors are of priority in further improving child oral health in different populations.
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              SB Brasil 2010: Pesquisa Nacional de Saúde Bucal: resultados principais

              (2012)
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                rgo
                RGO - Revista Gaúcha de Odontologia
                RGO, Rev. Gaúch. Odontol.
                Faculdade São Leopoldo Mandic (Campinas, SP, Brazil )
                1981-8637
                1981-8637
                December 2016
                : 64
                : 4
                : 484-489
                Affiliations
                [2] Natal RN orgnameInstituto Técnico-Científico de Polícia Brasil
                [3] São Paulo São Paulo orgnameUniversidade de São Paulo orgdiv1Faculdade de Odontologia Brazil
                [1] Caicó Rio Grande do Norte orgnameUniversidade do Estado do Rio Grande do Norte orgdiv1Departamento de Odontologia Brazil
                Article
                S1981-86372016000400484
                10.1590/1981-8637201600030000193215
                157c8dae-2b9c-4aa4-b5ff-f413acc5c022

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 07 May 2016
                : 14 July 2016
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 22, Pages: 6
                Product

                SciELO Brazil


                Identificação forense,Imagem digital,Radiografias,Forensic identification,Image processing,Radiographs

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