不同的空气颗粒磨损策略对丹丁键强度的影响:一个体外研究
Rui I Falacho1,2,3, Gabriela Almeida4, Romina Ñaupari-Villasante5
1Department of Preventive and Restorative Sciences, University of Pennsylvania School of Dental Medicine, Philadelphia, Pennsylvania, USA.
概括
用氧化和灌对空气中的颗粒进行磨损,可显著提高牙结合强度. 建议使用这种表面预处理,以获得牙粘合剂的最佳粘合性能.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 粘合式牙科 粘合式牙科
背景情况:
- 表面处理对于优化修复性牙科的粘附性至关重要.
- 空气中的颗粒磨损是准备牙表面的一种常见方法.
- 了解不同磨砂材料和灌对粘合强度的影响是必不可少的.
研究的目的:
- 评估牙空气中的颗粒磨损技术如何影响微拉伸键强度.
- 为了比较自我蚀刻和蚀刻和冲洗粘合剂策略在磨损后的有效性.
- 评估氧化和生物活性玻璃磨损带有和没有灌的影响.
主要方法:
- 使用了20个人类牙,根据粘合剂系统分为两组 (Clearfil SE Bond,Optibond FL).
- 应用了四种表面处理:控制,氧化 (Al2O3) 磨损没有灌,Al2O3磨损有灌 (Al2O3 / Aquasol) 和生物活性玻璃 (BG45S5) 磨损.
- 进行了微拉力键强度 (μTBS) 和扫描电子显微镜 (SEM) 分析.
主要成果:
- 粘合策略和表面预处理都显著影响了粘合强度 (p < 0.001).
- 经过灌 (Al2O3/Aquasol) 和没有灌 (Al2O3) 的氧化磨损显示,结合强度明显高于对照组 (分别p < 0.001和p = 0.006).
- 与对照组相比,生物活性玻璃 (BG45S5) 磨损的结合强度没有产生统计学上显著的差异 (p = 0.080). SEM揭示了涂抹层密度的变化和灌减少的紧缩.
结论:
- 氧化磨蚀与同时灌产生了最高的微拉伸键强度值.
- 没有灌的结合强度结果取决于所使用的特定粘合剂策略.
- 生物活性玻璃磨损不会对粘合性能产生负面影响,但氧化物与灌是健全牙粘合的首选预处理方法.
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