Abstract
Six glass ionomer cements, including a glass cermet cement, were compared to a silicate cement with regard to compressive and flexural strength, working and setting time as well as solubility. The structure of the cement powder particles was studied by scanning electron microscopy (SEM). The results showed great variations among the different glass ionomer cements in properties measured. The working time and solubility seem to be a problem for some materials. The silicate cement showed better compressive strength, working and setting times than the glass ionomers. The glass cermet cement showed high values for mechanical properties, and relatively low solubility. The SEM study of the cement powder showed that irregular silver particles partly covered by a layer of glass had been added to the glass cermet cement.
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