将填料混合到粘合剂中并不一定会改善它们的机械性能
C Tang1, B Mercelis2, F Zhang3
1Chuliang Tang, KU Leuven (University of Leuven), Department of Oral Health Sciences, BIOMAT, Biomaterials Research Group & UZ Leuven (University Hospitals Leuven), Dentistry, Leuven, Belgium.
Operative dentistry
|April 18, 2024
概括
将填充物颗粒添加到粘合树脂中并没有改善微拉伸力断裂强度 (μTFS). 然而,填充剂使树脂对储水的敏感性降低,与未填充的树脂不同.
科学领域:
- 牙科材料科学 牙科材料科学
- 聚合物化学 聚合物化学
- 生物材料工程 生物材料工程
背景情况:
- 粘合树脂在牙科修复中至关重要.
- 它们的微拉力断裂强度 (μTFS) 可能会受到填充剂含量和水暴露的影响.
- 优化填料成分是提高树脂耐久性的关键.
研究的目的:
- 评估填充剂类型和度如何影响粘合树脂的μTFS.
- 评估一周的水储存对这些实验树脂的μTFS的影响.
- 将实验性通用粘合剂与黄金标准材料进行比较.
主要方法:
- 使用SEM,TEM和粒子大小分析对三个填充颗粒 (Glass-S,BioUnion,CPC_Mont) 进行了特征化.
- 在不同度的未填充的粘合树脂 (BZF-29未填充) 中加入填充剂.
- 对实验和控制粘合树脂的水储存立即和1周后测量的μTFS.
主要成果:
- 将填充剂纳入BZF-29未填充的降低了它的即时μTFS.
- 在大多数树脂中,水存储减少了μTFS,除了BZF-21.1.
- 与未填充的树脂相比,含有30%重量Glass-S和20%重量BioUnion的树脂在储存水后没有显著的μTFS减少.
结论:
- 将填充剂添加到粘合树脂中不会增强μTFS.
- 与未填充的配方相比,填充剂可以提高粘合树脂的储水稳定性.
- 特定的填充物类型和加载物可能会在潮湿的环境中提供更好的抗降解性.
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