Evaluation and comparison of physical properties and fluoride release of newly introduced ceramic reinforced glass-ionomer restorative material with other glass ionomer cements – An in vitro study

Aim : The purpose of the study was to evaluate and compare the fracture toughness, compressive strength, flexural strength and check the amount of fluoride release of Amalgomer CR, Ketac N100, DyractXtra and Giomer dental restorative material.Methodology: 100 specimens will be used in 4 different groups of 25 each (Amalgomer CR, Ketac N 100, DyractXtra and Giomer). The physical properties (fracture toughness, compressive strength, flexural strength) will be evaluated using Universal Testing Machine and amount of fluoride release using Fluoride ion specific electrode from the above mentioned glass ionomer cements.Results: Amalgomer CR showed the highest compressive strength and # Toughness compared to other GIC material used for the study, however the Flexural Strength of Giomer was found to be highest compared to Amalgomer CR and other GIC material used in my study. In terms of Fluoride releasing capacities Amalgomer CR showed increased fluoride release for the first 24 to 48 hr reaching a peak at 6th hr, thereafter decreasing slowly to reach steady level at fifth week. Conclusion: Within the limitations of my study it could be stated that Amalgomer CR can be used as an effective restorative material due to its higher physico-mechanical properties and fluoride releasing capacities as compared to various other GIC restorative materials used in the study.