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用石墨烯添加的正统牙粘合剂的物理机械性能和粘合性能

Shiyao Liu¹, Ahmed El-Angbawi¹, Vinicius Rosa^2,3,4

¹Division of Dentistry, University of Manchester, Manchester M13 9PL, UK.

Journal of functional biomaterials

|August 28, 2024

概括

将石墨烯添加到正粘合剂中改善了一些机械性能和剪接强度,而不会对粘度或转换产生负面影响. 特定的石墨烯度提高了固定保持器的Transbond LR和LV粘合剂的性能.

科学领域:

生物材料科学生物材料科学
牙科材料牙科材料
在牙科的纳米技术.

背景情况:

ортодонтика粘合剂对于固定保持器粘合至关重要.
石墨烯纳米粒子提供了提高材料性能的潜力.
需要研究石墨烯对粘合剂物理机械性能的影响.

研究的目的:

评估不同度石墨烯的正牙粘合剂 (Transbond LR和LV) 的物理机械性能和粘合性能.
为了评估石墨烯对粘合剂粘性,转化程度,硬度和固定保持器应用的剪接强度的影响.

主要方法:

石墨烯被纳入了Transbond LR和LV,分别为0.01,0.05,0.1%的重量.
测量包括未经固的样品粘度,实时转换度 (DC) 通过FTIR,马斯硬度 (HM),缩模量 (E),弹性指数 (η),爬行 (C) 和牛切割刀上的剪接强度 (SBS).
使用光显微镜分析骨折模式;使用ANOVA和Tukey测试进行统计分析.

主要成果:

在LR+0.01组中,SBS (12.6 MPa) 和HM (539.4 N/mm2) 呈现最高.
在LV + 0.05组显示最高的SBS (7.7 MPa),而LV + 0.1具有最高的HM (312.4 N/mm2).
石墨烯的添加没有显著影响E, η或C,除了LR + 0.01中的较低C;粘度和DC没有受到影响.

结论:

石墨烯的添加,特别是在特定度下,可以增强牙科粘合剂的剪接强度和硬度.
石墨烯的加入没有影响关键性质,如粘性和转化程度.
用石墨烯修饰的粘合剂有望改善固定牙科支器的临床性能.

关键词:

结合强度是因为结合强度.转换的程度转换的程度.石墨烯是一种石墨烯.ортодонтические粘合剂 ортодонтические粘合剂保持器保持器保持器粘性粘性粘性

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