Niobium pentoxide as a novel filler for dental adhesive resin
Niobium pentoxide as a novel filler for dental adhesive resin
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DOI：
10.1016/j.jdent.2012.04.022
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发表时间：
2013-02-01
影响因子：
4.4
通讯作者：
Werner Samuel, Susana Maria
中科院分区：
文献类型：
--
作者：
Branco Leitune, Vicente Castelo;Collares, Fabricio Mezzomo;Werner Samuel, Susana Maria
目的：本研究的目的是开发一种掺入五氧化二铌的粘合剂树脂并评估其性能。方法：通过 X 射线衍射、表面积、粒径、显微拉曼、扫描电子显微镜以及傅里叶变换红外 (FTIR) 来表征五氧化二铌的硅烷化过程的有效性。实验性粘合剂树脂由 0、5、10 和 20 wt% Nb2O5 配制而成。根据显微硬度、转化度、射线不透性和显微拉曼界面（树脂/牙本质）表征对配制的粘合树脂进行评估。结果：本研究中使用的颗粒呈现出具有典型化学基团和微米平均尺寸的单斜晶相。随着 Nb2O5 含量的增加，显微硬度和射线不透性增加，并且颗粒能够渗透到混合层中。结论：因此，Nb2O5 可能是聚合物基生物材料的替代品。临床意义：五氧化二铌可用于生产性能增强的粘合树脂。 (C) 2012 Elsevier Ltd. 保留所有权利。
Objectives: The purpose of this study was to develop an adhesive resin with incorporation of niobium pentoxide and evaluate its properties.Methods: Niobium pentoxide was characterised by X-ray diffraction, surface area, particle size, micro-Raman, scanning electron microscopy and the effectiveness of silanisation process by Fourier Transform Infrared (FTIR). An experimental adhesive resin was formulated with 0, 5, 10 and 20 wt% Nb2O5. The formulated adhesive resins were evaluated based on microhardness, degree of conversion, radiopacity and interface (resin/dentine) characterisation by micro-Raman.Results: The particles used in this study presented a monoclinic crystalline phase with typical chemical groups and micrometre mean size. Microhardness and radiopacity increased with higher amounts of Nb2O5, and the particles were able to penetrate into the hybrid layers.Conclusions: Therefore, Nb2O5 may be an alternative for polymer-based biomaterials.Clinical significance: Niobium pentoxide could be used to produce adhesive resins with enhanced properties. (C) 2012 Elsevier Ltd. All rights reserved.