Influence of Etching Mode and Composite Type on Bond Strength to Biodentine Using a “No-Wait” Universal Adhesive

The purpose of this study was to compare the shear bond strength (SBS) four resin-based composite materials a silicate-based cement using “no-wait” universal with self-etch (SE) and etch-and-rinse (ER) modes. Acrylic blocks (n=80, 2mm depth, 5mm diameter central hole) were prepared. holes filled BiodentineTM (BD) divided into 4 main groups (n=20) according resin type used: Group FZ250: FiltekTM Z250 Universal Restorative (microhybrid), SDR: SDR Plus U Bulk Fill Flowable (low-viscosity bulk-fill), FBP: Posterior (high-viscosity EF: EsFlow™ Composite (nanohybrid). A ‘no-wait’ (Clearfil Bond Quick) used for bonding application. Then each group 2 subgroups etching mode applied (ER SE). SBSs measured stereomicroscope identify failure Selected samples fracture surfaces imaged by SEM. Tukey’s post-hoc One-way ANOVA tests analyze data. There statistically significant differences among (p<0.05). When showed highest values in SE (17.13 ± 2.98 MPa) mode, FBP lowest ER (8.89 2.46 mode. mean SBS not different between modes (p> 0.05). BD composites depends on but application is regardless composites.