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用粘土纳米颗粒修改的以环氧树脂为基础的密封剂:对其物理化学和机械性能的评估

Fotis Dimopoulos¹, Konstantinos Kodonas¹, Alexandros K Nikolaidis¹

¹Department of Dental Tissues Pathology and Therapeutics, (Basic Dental Sciences Endodontology and Operative Dentistry), School of Dentistry, Aristotle University of Thessaloniki, University Campus, Thessaloniki, Greece.

European journal of oral sciences

|December 17, 2025

概括

将有机修饰的蒙莫里隆尼特纳米粘土添加到环氧树脂内牙密封剂中,改善了定时间,流量和可溶性. 然而,与未经修改的密封器相比,这些增强导致了更大的尺寸变化.

科学领域:

牙科材料科学牙科材料科学
在牙科的纳米技术.
聚合物化学聚合物化学

背景情况:

基于环氧树脂的密封剂在内牙治疗中至关重要,因为它具有出色的物理化学特性.
目前的密封器表现出低于最佳的设置时间,可溶性,流量和维度稳定性.
增强密封剂特性对于改善临床性能至关重要.

研究的目的:

为了评估有机改性蒙莫里隆石 (MMT) 纳米粘土对环氧树脂内密封剂特性的影响.
为了研究不同度的MMT (0.5%,1%,2%) 对密封器性能的影响.
将MMT修改密封器的物理化学特性与商业控制 (AH26,AHplus) 进行比较.

主要方法:

合成的环氧树脂-MMT纳米复合材料使用改性蒙莫里隆石.
使用扫描电子显微镜和X射线衍射来表征纳米复合材料.
根据ISO 6876:2001标准评估的定位时间,流动性,溶解性,尺寸变化和压力强度.

主要成果:

对于两种密封器来说,MMT修改减少了设置时间,改善了流量,并降低了溶解度.
与对照组相比,MMT修改密封剂的压力强度显著增加.
未经修改的密封剂的尺寸变化明显低于MMT修改的组.

结论:

有机修饰的蒙莫里隆尼特纳米粘土可以增强环氧树脂内牙密封剂的关键性质.
在改进的机械/处理性能和采用MMT的尺寸稳定性之间存在一个权衡.
进一步的研究可能会优化MMT度,以平衡临床应用中的这些特性.

关键词:

环氧树脂是一种环氧树脂.这是一种蒙特莫里隆石 (Montmorillonite).纳米复合材料纳米粒子密封者密封者密封者

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