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de Almeida Salema CFB, de Barros Silva PG, da Costa Oliveira PM, Lima JPM, da Silva RHA, Nobre TFG, Bezerra TP. Forensic study of mechanical properties of dental restoration after burial in mangrove environment. Forensic Sci Int 2020; 308:110166. [PMID: 32004996 DOI: 10.1016/j.forsciint.2020.110166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/16/2020] [Accepted: 01/21/2020] [Indexed: 10/25/2022]
Abstract
Conducting research in the field of forensic sciences with methodologies that simulate situations found in the day-to-day practice of a given field of expertise is relevant insofar as this approach can produce results that are as close as possible to reality. In this context, the present study provided situations based on burial in a mangrove environment to estimate the changes in the mechanical properties (Knoop microhardness, roughness and color) of dental restorations utilizing silver amalgam, composite resin and glass ionomer cement over the time of burial. The silver amalgam showed a significant increase in surface roughness and a reduction in Knoop microhardness. Composite resin showed a statistically significant increase in color variation, and the glass ionomer cement showed significant increases in color variation and Knoop microhardness. These results allowed us to conclude that teeth restored with silver amalgam, composite resin and glass ionomer cement submitted to burial in mangrove environments produce different changes in surface roughness, Knoop microhardness and color properties depending on the time of burial to which the victims were submitted. These proprieties could help the forensic sciences to estimate time intervals for burial in mangrove environments.
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Affiliation(s)
| | | | | | | | - Ricardo Henrique Alves da Silva
- Universidade de Sao Paulo Faculdade de Odontologia de Ribeirao Preto, Avenue do Café - Subsector Oest- 11(N-11), Ribeirão Preto, SP, Brazil
| | | | - Tácio Pinheiro Bezerra
- Centro Universitário Christus, Street Adolfo Gurgel, 133, Cocó, Fortaleza, Ceará, Brazil
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Forrest A. Forensic odontology in DVI: current practice and recent advances. Forensic Sci Res 2019; 4:316-330. [PMID: 32002490 PMCID: PMC6968523 DOI: 10.1080/20961790.2019.1678710] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/30/2019] [Accepted: 10/03/2019] [Indexed: 11/03/2022] Open
Abstract
Forensic odontology frequently plays a significant role in identification of the victims of multi-fatality disasters, but not in all. It depends on adequate dental remains surviving the disaster and on the availability of dental records to be successful. This paper describes current practice in the techniques of identification in forensic odontology and outlines recent advances that are moving into the mainstream.Key PointsForensic odontology plays a key role in mass disaster victim identification (DVI) when good-quality antemortem (AM) dental records are available.Images including radiographs, computerized tomography (CT) data and three-dimensional (3D) scan data are considered more reliable AM records than written dental charts and odontograms.Interpretation, transcription and comparison of dental datasets are complex processes that should be undertaken only by trained dental professionals.The future of forensic odontology DVI techniques is likely to include the use of 3D datasets for comparison.
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Affiliation(s)
- Alex Forrest
- Health Support Queensland Forensic and Scientific Services, Coopers Plains, Queensland, Australia.,School of Dentistry, The University of Queensland, Brisbane, Australia.,School of Environment and Science, Griffith University, Nathan, Queensland, Australia
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