COMPARATIVE ANALYSIS OF THE SOLUBILITY OF MODIFIED CONVENTIONAL GLASS IONOMER CEMENT AND RESIN-MODIFIED GLASS IONOMER CEMENT IN ARTIFICIAL SALIVA WITH VARYING PH LEVELS

Objectives: To determine the solubility of modifi ed conventional glass ionomer cement and resin-modified glass ionomer cement in artificial saliva at varying pH levels.Materials and Methods: Two luting cements were used to fabricate 120 specimens, following ISO standard 4049/2000. The specimens were divided into two groups, Group A (conventional glass ionomer luting cement) and Group B (resin-modifi ed glass ionomer luting cement), each containing 60 specimens, and further sub divided into three subgroups A3,A7,A9,B3,B7 and B9. Solubility was assessed by measuring weight changes after immersion in artifi cial saliva with varying pH levels for 28 days. A one-way ANOVA was conducted to statistically assess the differences in mean solubility among the groups, with post hoc Tukey's test applied for multiple comparisons. Additionally, paired t-tests were used to compare results between groups based on the media used.Results: Mean solubility of specimens of subgroup A9 immersed in basic salivary solution showed least solubility among all the groups. The mean solubility of G1 & RMGI luting cement in artifi cial cement saliva having PH 3.7& 9 respectively.Conclusion: Conventional glass ionomer luting cement with modifi ed powder/liquid ratio is more reliable for luting of fixed prosthesis as it exhibited lowest solubility in basic and acidic conditions.