Effects of high temperatures on different dental restorative systems: Experimental study to aid identification processes
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Abstract
This "in vitro" study was to observe the effects of high temperatures on teeth restored by (1) amalgam overlaying glass ionomer bases, (2) composite/adhesive system overlaying glass ionomer bases, (3) ZnO modified temporary filling material vs. unrestored teeth. Fifty un-restored teeth (control group), 50 teeth with class I amalgam restorations and glass ionomer bases, 50 teeth with class I composite/adhesive system restorations and glass ionomer bases and 50 teeth with class I ZnO modified temporary filling material restorations were placed in a furnace and heated at a rate of 10°C/min. The effects of the predetermined 200, 400, 600, 800, 1000 and 1200°C temperatures were examined macroscopically and then observed microscopically by means of a stereomicroscope.Our observations showed that the class I restorations made of amalgam on glass ionomer bases as far as the class I restorations made of ZnO modified temporary filling material can be identified till 1200°C because they maintain their shape despite the disintegration of the crowns, whilst the class I composite/adhesive system and the underplayed glass ionomer bases remained in place in an altered shape.
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This work is licensed under a Creative Commons Attribution 4.0 International License.
How to Cite
Sandra Moreno, Giuseppe Merlati, Liliana Marin, Caterina Savio, & Freddy Moreno. (2009). Effects of high temperatures on different dental restorative systems: Experimental study to aid identification processes. Journal of Forensic Dental Sciences, 1(1), 17–23. https://doi.org/10.4103/0974-2948.50883
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