Dent Mater J:树脂改良玻璃离子粘接剂在不同光固化延迟后的结构和长期机械特质

2018-10-22 lishiting MedSci原创

这篇研究的目的是在不同光固化延迟后通过扫描电子显微镜(SEM)检测一种树脂改良的玻璃离子粘接剂(RMGIC)的显微结构,并测试其短期和长期的机械特质。

这篇研究的目的是在不同光固化延迟后通过扫描电子显微镜(SEM)检测一种树脂改良的玻璃离子粘接剂(RMGIC)的显微结构,并测试其短期和长期的机械特质。

研究对5组Fuji II LC在不同的光固化条件下进行检测。每组样本均通过酸蚀后进行SEM观察以选择性的检测其有机聚合物的相位。在放置24小时和12个月后也检测其弯曲强度和显微硬度。

SEM观察结果显示,通过不同的光固化延迟后,各组材料存在不同的影像。24小时,最大机械特质存在延迟:弯曲强度5分钟,显微硬度10分钟。然而,在12个月时,最大机械特质达到了最小延迟。由于光固化的延迟,酸/碱比率与聚合作用反应之间的竞争导致形成结构和机械上不同的材料。这种延迟应适应临床情况的需要。

原始出处:

Lagarde M, Francois P, et al. Structural and long-term mechanical properties from a resin-modified glass ionomer cement after various delays of light-activation. Dent Mater J. 2018 Oct 5. doi: 10.4012/dmj.2017-342.

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    2018-10-26 一天没事干

    很好的学习机会

    0

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    2018-10-25 orangesking

    0

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    2018-10-24 chenshujs
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    2018-10-23 深海的鱼

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