title: Color Stability of Dental Restorative Materials Submitted to Heat Sources, for Forensic Purposes.
abstract: During postmortem examination of the dental arches of carbonized victims, dental restorative materials may be found. The aim of this study was to evaluate the effect of heat source action on the color stability of composite resin (CR) and glass ionomer cement (GIC) restorations, to discriminate between them and compare with antemortem dental data. Sixty bovine teeth (30 CR and 30 GIC) were prepared (6 × 6 × 2 mm) and separated into groups (n = 10). The color readouts were taken by spectrophotometer, before and after heat action (100°C, 200°C, 300°C), in an oven for 15 min. There were color alterations for all coordinates (ΔE, ΔL*, Δa* eΔb*) for both materials. GIC presented greater change. The authors concluded that it is possible to distinguish between the materials by the color changes analyzed by instrumental method, helping victim identification.
authors.affiliation: Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto School of Dentistry - University of São Paulo, Ribeirão Preto, Brazil.
authors.forename: Roberto Cesar
authors.initials: RC
authors.lastname: Biancalana
authors.affiliation: Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry - University of São Paulo, Ribeirão Preto, Brazil.
authors.forename: Sergio Augusto de Freitas
authors.initials: SA
authors.lastname: Vicente
authors.affiliation: Department of Stomatology, Public Oral Health, and Forensic Dentistry, Ribeirão Preto School of Dentistry - University of São Paulo, Ribeirão Preto, Brazil.
authors.forename: Ricardo Henrique
authors.initials: RH
authors.lastname: Alves da Silva
authors.affiliation: Department of Dental Materials and Prosthodontics, Ribeirão Preto School of Dentistry - University of São Paulo, Ribeirão Preto, Brazil.
authors.forename: Fernanda de Carvalho Panzeri
authors.identifier: http://orcid.org/0000-0002-1455-1538
authors.initials: FC
authors.lastname: Pires-de-Souza
mesh_terms: D000818:Animals; D002417:Cattle; D003116:Color; D003124:Colorimetry; D003188:Composite Resins / Q000737:chemistry*; D005553:Forensic Dentistry; D005899:Glass Ionomer Cements / Q000737:chemistry*; D006358:Hot Temperature; D006801:Humans; D013053:Spectrophotometry
chemical_list: D003188:Composite Resins; D005899:Glass Ionomer Cements
keywords: color; dental materials; forensic dentistry; forensic science; heat source; human identification