COMPARATIVE EVALUATION OF WATER SORPTION AND SOLUBILITY OF DIFFERENT RESTORATIVE CEMENTS: AN IN-VITRO STUDY

Abstract

Aim: The purpose of this study is to compare and evaluate the water sorption and solubility of ve different types of restorative cements, in order to show variations that may reduce their effectiveness. Materials and methods: Five discs each of ve different materials viz. Ketac Molar (3M ESPE), Universal Restorative 2 (GC Gold Label), Ionol plus (VOCO), High Strength Posterior Restorative 9 (GC Gold Label) and Cention-N (Ivoclar) were prepared. The discs were weighed individually on precision weight scale, dehydrated and weighed again after storing for 1 day at 37oC in 50 ml distilled water. Again, the discs were stored for a week in 50 ml of distilled water at 37oC. All the discs were weighed individually after 7 days, dehydrated and new weights were again recorded. Water solubility of material and its water sorption were obtained from the difference between the intial and the nal dry mass of each disc, after 1 day and 7 days of immersion in distilled water. Data was analyzed for signicant difference by one-way ANOVAand Tukey's test. Results: The water sorption values were minimal with Cention-N after 1 day followed by Ketac Molar, Ionol Plus, Universal Restorative 2 and High Strength Restorative 9; and after 7 days, water sorption values were minimal for High Strength Restorative 9 followed by Ketac Molar, Ionol Plus, Cention- N and Universal Restorative 2. The solubility values were minimal with Cention-N after 1 day and 7 days followed by Ionol plus, Ketac molar, High strength restorative 9 and Universal restorative 2. Conclusion: Among the tested restorative cements, water sorption was minimal with Cention –N after 1 day whereas it was minimal for High Strength Restorative 9 after 7 days. Solubility was minimal for Cention-N after 1 day and 7 days.