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首页> 美国卫生研究院文献>Materials >Effects of Ions-Releasing Restorative Materials on the Dentine Bonding Longevity of Modern Universal Adhesives after Load-Cycle and Prolonged Artificial Saliva Aging
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Effects of Ions-Releasing Restorative Materials on the Dentine Bonding Longevity of Modern Universal Adhesives after Load-Cycle and Prolonged Artificial Saliva Aging

机译：离子释放修复材料对负荷循环和人工唾液老化后现代通用胶粘剂牙本质粘合寿命的影响

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This study aimed at evaluating the microtensile bond strength (MTBS) and fractographic features of dentine-bonded specimens created using universal adhesives applied in etch-and-rinse (ER) or self-etching (SE) mode in combination with modern ion-releasing resin-modified glass-ionomer cement (RMGIC)-based materials after load cycling and artificial saliva aging. Two universal adhesives (FTB: Futurabond M+, VOCO, Germany; SCU: Scotchbond Universal, 3M Oral Care, USA) were used. Composite build-ups were made with conventional nano-filled composite (AURA, SDI, Australia), conventional resin-modified glass ionomer cement (Ionolux VOCO, Germany), or a (RMGIC)-based composite (ACTIVA, Pulpdent, USA). The specimens were divided in three groups and immersed in deionized water for 24 h, load-cycled (350,000 cycles; 3 Hz; 70 N), or load-cycled and cut into matchsticks and finally immersed for 8 months in artificial saliva (AS). The specimens were cut into matchsticks and tested for microtensile bond strength. The results were analyzed statistically using three-way ANOVA and Fisher’s LSD post hoc test (p < 0.05). Fractographic analysis was performed through stereomicroscope and FE-SEM. FTB showed no significant drop in bond strength after aging. Unlike the conventional composite, the two RMGIC-based materials caused no bond strength reduction in SCU after load-cycle aging and after prolonged aging (8 months). The SEM fractographic analysis showed severe degradation, especially with composite applied on dentine bonded with SCU in ER mode; such degradation was less evident with the two GIC-based materials. The dentine-bond longevity may be influenced by the composition rather than the mode of application (ER vs. SE) of the universal adhesives. Moreover, the choice of the restorative material may play an important role on the longevity of the finalrestoration. Indeed, bioactive GIC-based materials may contribute to maintain the bonding performance of simplified universal adhesives over time, especially when these bonding systems are applied in ER mode.
机译：这项研究旨在评估使用通用胶粘剂通过蚀刻和冲洗（ER）或自蚀刻（SE）模式与现代离子释放树脂结合使用制成的牙本质粘合标本的微拉伸粘合强度（MTBS）和分形特征负载循环和人工唾液老化后的改性玻璃离子聚合物（RMGIC）基材料。使用了两种通用粘合剂（FTB：Futurabond M +，德国VOCO； SCU：Scotchbond Universal，美国3M Oral Care）。使用常规的纳米填充复合材料（AURA，SDI，澳大利亚），常规树脂改性的玻璃离聚物水泥（Ionolux VOCO，德国）或（RMGIC）基复合材料（ACTIVA，Pulpdent，美国）制成复合材料。将标本分为三组，浸入去离子水中24小时，负载循环（350,000个周期； 3 Hz； 70 N），或负载循环并切成火柴，最后浸入人造唾液（AS）中8个月。将样品切成火柴，并测试微拉伸粘合强度。使用三效方差分析和Fisher的LSD事后检验对结果进行统计分析（p <0.05）。通过立体显微镜和FE-SEM进行分形分析。老化后，FTB的粘结强度没有明显下降。与传统的复合材料不同，两种基于RMGIC的材料在负载循环老化后和长时间老化（8个月）后都不会引起SCU的粘结强度降低。 SEM形貌分析显示严重降解，特别是在ER模式下将复合材料应用于牙本质与SCU结合时；对于两种基于GIC的材料，这种降解不太明显。牙本质键的寿命可能受通用粘合剂的成分而不是施加方式（ER与SE）的影响。而且，修复材料的选择可能对最终修复的寿命起重要作用。确实，基于生物活性GIC的材料可能会随着时间的流逝而保持简化通用粘合剂的粘合性能，特别是当这些粘合系统以ER模式应用时。

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