Effect of Elapsed Time after Initial Setting on the Solubility and Disintegration of Glass Ionomer Cements for Luting

Abstract

The aim of this study was to investigate changes in the solubility and disintegration of the glass ionomer cements that occurred from the initial setting up to 24 hours. Two different types (conventional and resin-modified) of glass ionomer cements were mixed at three different mixing ratios. The amount of solubility and disintegration of the cements immersed in water was determined up to 24 hours. The largest amount of solubility and disintegration in the cements was observed at 5 or 10 min after mixing. There was a significant increase in the amount of solubility and disintegration of the conventional cements at the lowest mixing ratio. A different trend in the behavior of the solubility and disintegration was seen between conventional and resin-modified glass ionomer cements in the initial setting period. The amount of the solubility and disintegration of the cements decreased due to the progress in the setting reaction. The mixing ratio of cements also influenced the behavior of the solubility and disintegration in the initial setting period.