Comparative Evaluation of Dentin Bond Strength of Zirconomer, Conventional Glass Ionomer Cement, and Resin - Modified Glass Ionomer Cement - An in Vitro Study

Background-Bond strength of Glass Ionomer cements with tooth structure directly influence the clinical performance of the glass ionomer cement. In this in vitro study, aims to measure and compare micro-tensile bond strength (?tbs) of Zirconomer- a newly introduced Glass Ionomer Cement with Conventional Glass Ionomer Cement and Resin- modified Glass Ionomer cement (RMGIC). Materials and methods- The specimens were divided into 3 groups: 1) Group I: Comprises of 4 teeth in which dentin was bonded to conventional GIC, 2) Group II: Comprises of 4 teeth in which dentin was bonded to RMGIC, 3) Group III: Comprises of 4 teeth in which dentin was bonded to zirconomer. After GIC build-ups, specimens were sectioned vertically into 2 x 2 x 6-mm3 beams and each specimen was subjected to ?tbs test. Results- Intergroup comparison using One-way ANOVA followed by pairwise comparison using post hoc test showed that ?tbs of RMGIC was significantly higher than both Conventional GIC and Zirconomer (pless than 0.05.) ?tbs values for zirconomer were higher than those for Conventional GIC however the difference was not statistically significant.