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Updated: Jan 4, 2026

Detection and Removal of Tooth-Colored Composite Resin Using the Fluorescence-Aided Identification Technique
Published on: July 27, 2022
Effect of Heat on the Fluorescence Properties of Tooth-Colored Restorative Materials and Their Forensic Implications
Ramya Kiran1, James Chapman1,2, Marc Tennant3
1School of Health, Medical and Applied Sciences, Central Queensland University, Bruce Highway, Rockhampton, 4701, Queensland, Australia.
Abstract:
During antemortem and postmortem comparison of dental records of carbonized victims, restorations may be part of such records. The objective of this study was to evaluate the effect of heat on the fluorescence behavior of contemporary tooth-colored restorative materials and natural tooth structure when subjected to range of temperatures, using illumination with 405 nm wavelength light. A total of 132 human extracted teeth restored with tooth-colored restorative materials were exposed to heat (200, 500, 900, 1200°C) in an oven for 30 min. Samples were imaged before and after heat treatment. All tooth-colored restorative materials underwent changes in color and in fluorescence properties, at each of the temperatures used. Resin-based restorative materials still fluoresced at 200°C, and at 500°C underwent major color changes due to volatilization of resin. Materials containing inorganic fluorophores still fluoresced at 900°C, while at 1200°C, none of the materials tested in this study showed any fluorescence.
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