In vitro corrosion behavior and microstructure examination of a gallium-based restorative

E. J. DeSchepper, Y. Oshida, B. K. Moore, N. B. Cook, H. Eggertson

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Concerns of mercury toxicity have led to the development of gallium-based restorative materials to replace dental amalgam. A new gallium-based dental restorative, Galloy, was compared with a high-copper amalgam, Permite, for anodic polarization behavior in deoxygenated Ringer's solution and by immersion testing in normal Ringer's solution at 37 °C. Corrosion products were analyzed using energy dispersive X-ray spectrometry and transmission electron diffraction. The data from both sources were consistent with the presence of α-Ga203 and SnO2 as the primary corrosion products of Galloy. Anodic polarization behavior of Galloy- and Permite-coupled specimens suggests that coupling Galloy with the more noble Permite amalgam may cause accelerated electrochemical corrosion and that Galloy is more corrosion prone than Permite.

Original languageEnglish (US)
Pages (from-to)209-216
Number of pages8
JournalOperative dentistry
Volume22
Issue number5
StatePublished - Sep 1 1997

ASJC Scopus subject areas

  • Dentistry(all)

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    DeSchepper, E. J., Oshida, Y., Moore, B. K., Cook, N. B., & Eggertson, H. (1997). In vitro corrosion behavior and microstructure examination of a gallium-based restorative. Operative dentistry, 22(5), 209-216.