Effect of resin cement type on the microtensile bond strength to lithium disilicate ceramic and dentin using different test assemblies

摘要: PURPOSE: This study evaluated the microtensile bond strength (µTBS) of 3 different resin cements to lithium-disilicate ceramic using two assemblies: ceramic-cement-ceramic (CCC) and ceramic-cement-dentin (CCD). MATERIALS AND METHODS: The bonding surfaces lithium disilicate blocks (5 × 5 4 mm) (Nblock = 90) were etched with 4% hydrofluoric acid for 20 s silanized. Flat dentin human third molars conditioned according respective manufacturer's specifications three types (ML: Multilink, Ivoclar-Vivadent; PF: Panavia F, Kuraray; SB: Super Bond CB aging condition (AC - thermocycling 12,000 times + water storage 150 days). µTBS test was performed a universal testing machine (1 mm/min). After debonding, substrate adherent analyzed scanning electron microscope categorize failure types. data statistically 2-way ANOVA Tukey's (5%). RESULTS: While mean CCC assemblies significantly influenced by cement type (p 0.05). Without (DC), (MPa) SB (26.9) PF higher than ML (18.5) In both CCD assemblies, pre-test failures least cement. Regardless employed conditions, adhesive ranged between 35.3% 88.9%, cohesive in 2.3% 35.3%, 3.3% 6.8%. CONCLUSION: demonstrated highest tests without conditions.