在多阴影,组阴影和单阴影树脂复合材料中的光学和机械性能稳定性
Violina Gunawan1, Joanne Jung Eun Choi1
1Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, 310 Great King Street, Dunedin 9016, New Zealand.
International journal of dentistry
|July 1, 2025
概括
单色牙树脂复合材料 (RC) 在暴露于各种浸泡介质时,在光学和机械性能方面表现出卓越的稳定性. 多色调RC显示颜色稳定性最低但硬度最高,而组色调RC性能则可变.
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
- 聚合物化学 聚合物化学
背景情况:
- 牙科树脂复合材料 (RC) 是广泛使用的修复材料.
- 了解它们在各种环境条件下的稳定性对于临床寿命至关重要.
- 不同的阴影 (多阴影,组阴影,单阴影) 可能会对老化因素表现出不同的反应.
研究的目的:
- 评估人造唾液,黑咖啡和红酒对三种类型牙科树脂复合材料的光学,机械和表面性能的影响.
- 为了比较模拟老化后多阴影 (MS),组阴影 (GS) 和单阴影 (SS) 牙树脂复合材料 (RC) 的稳定性.
主要方法:
- 从MS,GS和SS牙科RC制造矩形样本.
- 对标本进行热循环 (1万个循环),然后浸泡在人工唾液,黑咖啡和红酒中.
- 测量颜色稳定性 (ΔE00),相对半透明度参数 (RTP),表面粗度 (Sa) 和维克尔硬度 (VH).
主要成果:
- 所有经过测试的RC显示颜色变化超过了可接受性值,红葡萄酒导致显著的DE00和半透明度转移.
- 在热循环后,在所有RC中观察到RTP,Sa和VH的统计学显著变化.
- 在所有沉浸介质中,在表面粗度或硬度上没有持续观察到显著的变化.
结论:
- 单色 (SS) 牙树脂复合材料在光学和机械性能方面提供了最佳的整体稳定性.
- 多色调 (MS) RCs表现出最低的颜色和半透明度稳定性,但保持了最高的硬度.
- 集团阴影 (GS) RCs表现不一致,需要进一步调查.
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