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Color Stability of Dental Restorative Materials Submitted to Heat Sources, for Forensic Purposes
Author(s) -
Biancalana Roberto Cesar,
Vicente Sergio Augusto de Freitas,
Alves da Silva Ricardo Henrique,
PiresdeSouza Fernanda de Carvalho Panzeri
Publication year - 2017
Publication title -
journal of forensic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.715
H-Index - 96
eISSN - 1556-4029
pISSN - 0022-1198
DOI - 10.1111/1556-4029.13292
Subject(s) - glass ionomer cement , dentistry , materials science , forensic identification , medicine , archaeology , history
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 (Δ E , Δ L *, Δ a * e Δ b *) 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.