Effects of etching and adhesive applications on the bond strength between composite resin and glass-ionomer cements

Abstract

ObjectiveThis study determined the effects of various surface treatment modalities on the bond strength of composite resins to glass-ionomer cements. Material and MethodsConventional (KetacTM Molar Quick ApplicapTM) or resin-modified (PhotacTM Fil Quick AplicapTM) glass-ionomer cements were prepared. Two-step etch-rinse & bond adhesive (AdperTM Single Bond 2) or single-step self-etching adhesive (AdperTM PromptTM L-PopTM) was applied to the set cements. In the etch-rinse & bond group, the sample surfaces were pre-treated as follows: (1) no etching, (2) 15 s of etching with 35% phosphoric acid, (3) 30 s of etching, and (4) 60 s of etching. Following the placement of the composite resin (FiltekTM Z250), the bond strength was measured in a universal testing machine and the data obtained were analyzed with the two-way analysis of variance (ANOVA) followed by the Tukey's HSD post hoc analysis (p=0.05). Then, the fractured surfaces were examined by scanning electron microscopy. ResultsThe bond strength of the composite resin to the conventional glass-ionomer cement was significantly lower than that to the resin-modified glass-ionomer cement (p<0.001). No significant differences were determined between the self-etching and etch-rinse & bond adhesives at any etching time (p>0.05). However, a greater bond strength was obtained with 30 s of phosphoric acid application. ConclusionsThe resin-modified glass-ionomer cement improved the bond strength of the composite resin to the glass-ionomer cement. Both etch-rinse & bond and self-etching adhesives may be used effectively in the lamination of glass-ionomer cements. However, an etching time of at least 30 s appears to be optimal.

Bond strength of a composite resin to glass ionomer cements using different adhesive systems

“…Pamir et al 16 comparing a simplified etch-and-rinse and a single-step self-etching adhesive did not observe significant difference in bond strength of a composite resin to the conventional and resin-modified GICs . In the present study, we found no significant difference between the single-step self-etching (EO) and simplified etch-and-rinse (SB) adhesive systems.…”

Shear Bond Strength Evaluation of Resin Composite Bonded to GIC Using Different Adhesives

“…Arora and others used resin modified GIC which has demonstrated a better bonding to composite resin than the conventional GIC, but exhibits a command set when activated by light [17,18]. Navimipour and others observed that surface treatment with phosphoric acid or Er,Cr:YSGG laser increased the shear bond strength of conventional GIC to composite resin; however, in RMGIC only laser etching resulted in significantly higher bond strength [19].…”

Marginal Adaptation Evaluation of Biodentine and MTA Plus in “Open Sandwich” Class II Restorations

“…Various studies have evaluated the effect of acid‐etching on glass ionomer cements. Pamir and colleagues evaluated the effects of various surface treatment modalities on the bond strength of composite resins to glass‐ionomer cements and reported that there was no difference between the self‐etching and etch‐rinse and bond adhesives at any etching time. Bona and colleagues suggested that phosphoric acid‐etching of GIC prior to the placement of composite resin does not improve the sealing ability of sandwich restorations.…”