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Gustavo Sinisterra-Sinisterra

Liliana Marín-Jiménez

Angélica García

Sandra Moreno-Correa

Freddy Moreno-Gómez

Abstract

ABSTRACT. Background: Dental materials, including dental amalgam, undergo macro-structural changes when exposed to high temperatures. Understanding those changes can be useful for dental identification and documentation when conducting medical-legal autopsies of burned, charred, or incinerated bodies to determine type of biomaterial and highest temperature reached. Purpose: Describe the formation of silver nodules on the surface of dental amalgams exposed to high temperatures, in order to identify patterns and reliable markers for forensic dentistry use. Methods: This was a quasi-experimental in vitro study that described the formation of silver nodules in a sample of 45 dental amalgam discs (brands: Contour® Kerr®, Admix® SDI®, and Nu Alloy® New Stetic®) and 45 occlusal fillings in premolars that were exposed to high temperatures (200º C, 400º C, 600º C, and 800º C). Results:  Silver nodules were evident on the amalgam surfaces between 200º C and 400º C and began to disappear at 600º C to form spheres and strips upon reaching 800º C. Conclusions: The formation and disappearance of silver nodules is a recurring feature of new-generation amalgam alloys exposed to extreme temperatures. Therefore, describing them can be used as a marker to identify materials and determine highest temperature reached by human remains. 

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References
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How to Cite
Sinisterra-Sinisterra, G., Marín-Jiménez, L., García, A., Moreno-Correa, S., & Moreno-Gómez, F. (2016). Macroscopic Changes of Dental Amalgam subjected in vitro at High Temperatures with Forensic Purposes: Silver Bullets. Universitas Odontologica, 35(74), 39-48. https://doi.org/10.11144/Javeriana.uo35-74.cmad
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