Comparative Evaluation Of Colour Stability Of Two Different Commercially Available Glass Ionomer Cement After Immersion In Carbonated Beverages

Background: Glass ionomer cement is a versatile acid base material formed by reaction between weak polymeric acids with glass powdered base. The three essential components of glass ionomer cement namely, water soluble acids like maleic acid or acrylic acid which acts as rate modifier, basic glass which reacts to form salt and water acting as medium, solvent promoting proton release. Aim: To study the comparative evaluation of two different commercially available glass ionomer cement on immersion in different carbonated beverages. Materials and Methods: Two different glass ionomer cements were selected, purchased and processed. The samples were prepared as pellets and stored. The samples were then numerically labelled, trimmed and polished. The samples were then immersed in carbonated drinks and left undisturbed for 24 hours. The colour change was then noted using a VITA easy shade advance spectrophotometer. The comparison was documented, analysed using spss statistics version 22.0. Results: The L,A,B values of the samples were documented, tabulated. The comparison was done using SPSS statistics, independent samples t test. The comparison of delta E values were done for all samples between immersion of different drinks. On an independent sample test, the p value was found to be 0.229, proving to be statistically insignificant, p>0.05. Conclusion: Pyrax glass ionomer cement showed more colour stability. Sprite drink made the maximum colour change than the other drinks used.