2012, Number 3
In vitro macroscopic analysis of dental tissues and some dental materials used in endodontics, submitted to high temperatures for forensic applications
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ABSTRACTObjective: The present paper aims at describing macro-structural physical changes taking place in materials and tissues employed in endodontic treatments after their exposition to high temperatures. Material and methods: An in vitro experimental study was conducted to observe macroscopic physical changes in dental tissues (enamel, dentine and cement) as well as materials conventionally used in endodontic practice: gutta-percha, Maillefer Dentsply®, Eufar® cement with zinc oxide eugenol, Top Seal® Dentsply® endodontic cement with epoxy resin, Fuji® GC America® glass ionomer, GS80® SDI® silver amalgam, and Point 4® Kerr®resin, in 124 human teeth exposed to five temperature ranks: 200°C, 400°C, 600°C, 800°C and 1,000°C. Results: Tissues and dental materials studied in the present research offered great resistance to high temperatures, without exhibiting considerable macrostructure variation, in such a way that physical changes (dimensional stability, fissures, cracks, fractures, texture, color, carbonization and incineration) can be identified and associated to each specific temperature rank. Conclusions: Dental tissues and materials offer great resistance to the effect of high temperatures. Moreover, they present specific changes ( color, texture, fissures, cracks fractures, fragmentation) which might contribute to the process of identifying a corpse, or burned, incinerated or carbonized human remains.
Ministerio de la Protección Social. Resolución N° 008430/1993 de octubre 4. Por la cual se establecen las normas científicas, técnicas y administrativas para la investigación en salud. (fecha de acceso febrero de 2009). URL disponible en http://www.minproteccionsocial.gov.co/vbecontent/library/documents/DocNewsNo267711.pdf