Surface characterization of amalgam made with Hg-In liquid alloy

H. Nakajima, Y. Akaiwa, H. Hashimoto, J. L. Ferracane, T. Okabe

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

When amalgam was triturated with Hg-In liquid alloys instead of pure mercury, the resultant amalgams released a significantly smaller amount of mercury vapor during setting. To understand the mechanisms responsible for the drastic decrease in mercury evaporation from the In-containing amalgam, we used Auger Electron Spectroscopy to examine surface oxide films on amalgams made with Hg-10 wt% In or pure mercury. The surface of the In-containing amalgam was rapidly covered with both indium and tin oxide films. Greater amounts of oxygen were found on the γ1 Ag-Hg matrix in the In-containing amalgam than in the amalgam without indium. The rapid formation of the oxide film contributes to a reduction in the mercury release from the In-containing amalgam by forming an effective barrier to evaporation.

Original languageEnglish (US)
Pages (from-to)610-616
Number of pages7
JournalJournal of dental research
Volume76
Issue number1
DOIs
StatePublished - Jan 1997

Keywords

  • Amalgam
  • Indium
  • Mercury
  • Oxidation
  • Surface

ASJC Scopus subject areas

  • Dentistry(all)

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