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Comparative Analysis of the Shear Bond Strength of Flowable Self-Adhering Resin-Composites Adhesive to Dentin with a Conventional Adhesive

机译:用常规粘合剂的流动自粘附树脂复合材料粘合强度对牙本质的比较分析

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This study aimed to measure and compare the shear bond strength (SBS) of a self-adhering flowable resin composite to dentin with a conventional flowable composite, and evaluate the various modes of failure. Thirty human premolar teeth (n = 30) were randomly allocated to two groups (Group I: Vertise? Flow; Group II: Filtek Ultimate Single Bond Universal) of 15 specimens each, and SBS was measured for specimens from each group by applying a shear load using a universal testing machine (UTM). Modes of failure were observed with an optical microscope. An independent-samples T-test was performed to test Levene’s assumption of homogeneity of variance across both groups, with the critical value set at 0.05. The results revealed, that the self-adhering flowable composite (Group I: Vertise? Flow) resulted in a lower shear bond strength compared with the conventional adhesive system composite (Group II: Filtek Ultimate Single Bond Universal). Moreover, group I predominantly exhibited non-cohesive failure, which reflects poor bonding to dentin. On the other hand, Group II showed mixed failure for most of the samples, which demonstrated strong adhesive bonding. Therefore, it could be concluded that the self-adhering flowable resin composite (Group I) results in lower SBS to dentin compared with a conventional adhesive system.
机译:该研究旨在用常规的可流动复合材料测量和比较自粘可流动树脂复合物到牙本质的剪切粘合强度(SBS),并评估各种故障模式。将30个人映进牙齿(n = 30)随机分配给两组(I族:顶点?流动; II族:FILTEK终极单键单键单键单键)每组,通过施加剪切测量来自每组的标本的样品使用通用测试机(UTM)负载。用光学显微镜观察失败模式。进行独立样品T检验以测试Levene在两个组中均匀的均匀性的假设,临界值设定为0.05。结果表明,与常规粘合剂系统复合物(II族:Filtek终极单键单键全键)相比,自粘附可流动复合材料(Ⅰ组:顶点α流动)导致较低的剪切粘合强度。此外,我主要表现出非粘性的失效,这反映了牙本质的粘接性差。另一方面,II组显示出大多数样品的混合衰竭,这表明了强粘合剂粘合。因此,可以得出结论,与常规粘合体系相比,自粘附可流动树脂复合材料(Ⅰ组)导致牙本质的降低SBS。

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