Structure and Effects of Non-gamma-2 Amalgam

Abstract

A non-γ₂ amalgam was investigated using optical microscopy, electron probe microanalysis, and a micro hardness test. Its improved mechanical properties seem to be the result of the remarkable hardness of reaction rings. Its decreased marginal fracture seems to be caused by the absence of the corrosion-prone γ ₂ phase which may cause extrusion of the margins.