实验中含有玻璃的生物活性复合材料表面特性的人工老化诱导的变化
Matej Par1, Andrea Gubler2, Danijela Marovic1
1Department of Endodontics and Restorative Dentistry, University of Zagreb School of Dental Medicine, Gunduliceva 5, Zagreb, Croatia.
Journal of dentistry
|January 29, 2026
概括
新的生物活性玻璃 (BG) 复合材料含有低化物,在老化后保持了微硬度和表面光滑. 这些发现表明了先进的离子释放牙科修复剂的潜力,其耐用性更好.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 牙科材料 牙科材料
背景情况:
- 树脂复合材料广泛用于牙科修复.
- 生物活性玻璃 (BGs) 通过释放离子来增强树脂复合材料.
- 研究BG成分对复合材料在老化过程中的性能的影响至关重要.
研究的目的:
- 为了比较人工老化对含有传统BG 45S5 (C系列) 的树脂复合材料的微硬度,表面粗度和微形状学的影响,与低化物BG (F系列) 相比.
主要方法:
- 使用Bis-GMA/TEGDMA矩阵制备了具有不同BG含量的试验复合材料 (5-20%重量).
- 标本在模拟体液 (SBF),乳酸 (LA),乙醇/水 (EtOH),NaOH和热循环中老化.
- 微硬度 (MH),表面粗度 (Ra) 和表面形态 (SEM/EDS) 在30天内进行了评估,并进行了超声波后分析.
主要成果:
- MH降解的顺序是SBF < LA < EtOH < NaOH.
- F系列复合材料在老化条件下保持了类似于对照组的MH,与C系列显示降解的复合材料不同.
- 在超声波处理后,F系列显示出临床上可接受的表面粗度 (<0.2微米),而NaOH则对所有材料造成了显著的粗.
结论:
- 低化物BG复合材料在加速老化下,与传统的BG 45S5配方相比,表现出优异的微硬度保留和表面光滑性.
- F-BG复合材料显示出作为耐用,离子释放的牙修复材料,具有有利的表面特性.
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