Objectives:

A root canal sealer that can increase the resistance of endodontically treated teeth to compressive strength would be of great advantage. The purpose of this study is to use three different nanoparticles: multi-walled carbon nanotubes (MWCNTs), Titanium carbides (TC), and Boron nitrides (BN) into a bioceramic adhesive root canal sealer; BioRoot™ RCS, in an attempt to improve its structural and compressive strength properties.

Methods:

Three composites of two weight fractions (1- and 2-wt.%) were produced by mixing each nanomaterial separately with a pre-weighed mass of Bioroot powder. The microstructural properties and compressive strength of the different hardened composites obtained were investigated. The composites have been characterized by X-ray Diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy. Compression testing was performed.

Results:

The 1-wt.% composites, Bioroot/MWCNTs, and Bioroot/TC, except for the one reinforced with BN, displayed a significant improvement in the compressive strength compared to pristine BioRoot™ RCS. The 2-wt.% composites showed no significant improvement in the compressive strength.

Conclusion:

The addition of 1-wt.% MWCNTs and TC nanomaterials can be considered in the future for enhancing the microstructure and compressive strength properties of pristine BioRoot™ RCS.

中文翻译：

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纳米材料增强生物陶瓷根管封闭剂的结构和抗压强度研究

目标：

可以增加根管治疗牙齿抗压强度的根管封闭剂将具有很大的优势。本研究的目的是将三种不同的纳米颗粒：多壁碳纳米管 (MWCNTs)、碳化钛 (TC) 和氮化硼 (BN) 用于生物陶瓷粘合剂根管封闭剂中；BioRoot™ RCS，试图改善其结构和抗压强度特性。

方法：

通过将每种纳米材料分别与预先称重的 Bioroot 粉末混合，产生了两种重量分数（1-和 2-wt.%）的三种复合材料。研究了获得的不同硬化复合材料的微观结构性能和抗压强度。复合材料已通过 X 射线衍射、傅里叶变换红外光谱和扫描电子显微镜进行了表征。进行了压缩测试。

结果：

与原始 BioRoot™ RCS 相比，1-wt.% 复合材料、Bioroot/MWCNT 和 Bioroot/TC，除了用 BN 增强的那一种外，在抗压强度方面表现出显着提高。2-wt.%的复合材料在抗压强度方面没有显着提高。

结论：

未来可以考虑添加 1-wt.% MWCNT 和 TC 纳米材料，以增强原始 BioRoot™ RCS 的微观结构和抗压强度性能。