Shear bond strength of various luting cements to fixed prosthodontic restorative materials

摘要: The aim of this study was to evaluate the shear bond strength (SBS) three different cements zirconia and lithium disilicate ceramic surface after thermal cycling. Thirty (Z) thirty (L) disk specimens were prepared in 8 mm diameter 3.4 mm thickness from blocks. Each group divided into subgroups (n:10). all groups bonded with using transparent polyethylene tubes: Zn-Phosphate cement (ZPC); self-adhesive resin (SARC); adhesive (ARS). then subjected aging procedure for 1 week under 37 °C water bath. Shear determined a universal testing machine at crosshead speed 1 mm/min. also examined both scanning electron microscope (SEM) stereomicroscope. Statistical analysis performed one-way ANOVA. Pair-wise statistical comparison made Tukey test. overall significance level set α = 0.05. For tested groups, SBS values ranged 0.29 ± 0.03 12.10 ± 0.25 MPa. L-SARC yielded highest value (p < 0.05) among while Z-ZPC had lowest (p < 0.05). Significantly higher found when compared those Tukey’s pairwise comparisons revealed that SARC significantly than ARC ZPC Mode failure results showed that, modes failures mixed debonding predominantly minimal residues (<10 %) groups. However, other predominantly. Within limitation vitro study, it concluded selfadhesive surface. However zinc-phosphate demonstrated lower