TO COMPARE THE SHEAR BOND STRENGTH OF RESIN MODIFIED GLASS IONOMER CEMENT TO COMPOSITE RESIN USING FOUR DIFFERENT ADHESIVE SYSTEMS: AN IN VITRO STUDY

Aim: To evaluate and compare shear bond strength of resin modified glass ionomer cement to composite resin using different adhesive systems.

Materials and Methods: 60 acrylic blocks were prepared by drilling holes to retain resin modified glass ionomer cement (GC Gold Label 2 LC Light Cured Universal Restorative-GIC). Samples were then divided into five groups (n=12) based on the generation of bonding agent used. Group I- Fifth Generation Bonding agent – 3M ESPE Adper single bond 2 adhesive, Group II- Sixth Generation Bonding Agent – Shofu FL Bond II Primer Self Etching Agent, Group III- Seventh Generation Bonding Agent – GC Solare Universal, Group IV- Eighth Generation Bonding Agent – IvoclarTetric N-Bond Universal and Group V- Control group. All the 60 specimens were filled with composite resin - Nano-Hybrid Composite (IvoclarVivadentTetric N-Ceram) over resin-modified glass ionomer cement and light cured. Shear bond strength was determined using the Universal testing Machine and directing the shearing force on the composite andresin modified glass ionomer cement interface. Amount of force required for bond failure was recorded in Newton. The data was analysed using one-way ANOVA and Post hoc Tukey test for statistical analysis.

Result: Group IV showed higher bond strength followed by Group III, Group II, Group I & Group V.

Conclusion: Bond strength of composite to resin modified glass ionomer cement was significantly higher for eighth generation bonding agent when compared to others.