In this study, the clinical performance (marginal fracture) of a gold-containing amalgam was compared to five traditional gamma 2-containing amalgams and one non-gamma 2 amalgam. The results showed that the performance of this gold-containing amalgam was bettered by the non-gamma 2 amalgam and four of the five gamma 2-containing amalgams. A microprobe evaluation of a five-year-old clinical restoration made from this alloy revealed an unusual corrosion pattern.
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University of Munich, Munich, Germany (Department of Forensic Toxicology, Institute of Forensic Medicine).
Objectives: Gold miners use mercury to extract gold from ore adding liquid mercury to the milled gold-containing ore. This results in a mercury-gold compound, called amalgam. Miners smelt this amalgam to obtain gold, vaporizing it and finally inhaling the toxic mercury fumes.
View Article and Find Full Text PDFIn this study, the clinical performance (marginal fracture) of a gold-containing amalgam was compared to five traditional gamma 2-containing amalgams and one non-gamma 2 amalgam. The results showed that the performance of this gold-containing amalgam was bettered by the non-gamma 2 amalgam and four of the five gamma 2-containing amalgams. A microprobe evaluation of a five-year-old clinical restoration made from this alloy revealed an unusual corrosion pattern.
View Article and Find Full Text PDFThe present study was conducted in order to understand the microstructural characteristics in dental amalgam which consists of both spherical and irregular Ag3Sn alloy particles with gold substituted in varying amounts for silver (0, 9, and 15%). Spherical alloy particles were used as obtained from Western Gold and Platinum and irregular alloy particles were prepared in the laboratory and then employed in the present study. The amalgam was prepared from the alloy particles by the trituration and condensation method.
View Article and Find Full Text PDFAlloying or admixing of a dental amalgam alloy with an element or alloy which has a higher affinity for tin offers a means for eliminating the corrosion prone gamma2 phase. Accordingly, the corrosion behaviour of non-conventional amalgams containing Cu and Au were investigated by anodic polarization studies in Ringer's solution. The Cu containing amalgams were produced by admixing Cu-Hg (copper amalgam) with conventional amalgam in the ratios of 0-5:1 and 1:1.
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