彩色多层石可能会影响其光学和机械性能
1Department of Oral Health Sciences, BIOMAT-Biomaterials Research Group & UZ Leuven, Dentistry, KU Leuven, Leuven, Belgium.
Journal of dental research
|October 4, 2024
概括
多层牙科 (5Y-PSZ) 中的颜料添加物会产生聚合物,降低光学和机械性能以及抗衰老性. 没有颜色的石具有卓越的半透明度,强度和可靠性.
科学领域:
- 生物材料科学 生物材料科学
- 牙科陶 牙科陶 的使用.
- 材料工程 材料工程 材料工程
背景情况:
- 单立式牙石灰颜色因其对材料性质的影响而受到争议.
- 多层5-mol% yttria部分稳定 (5Y-PSZ) 用于美观的牙科修复.
- 颜料的加入可能会影响5Y-PSZ的光学,机械和老化特性.
研究的目的:
- 为了研究颜料对半透明度参数 (TP00),断裂性,硬度,双轴强度和5Y-PSZ的热水稳定性的影响.
- 为了将色素效应与微观结构,相位组成和衰老行为相关联.
- 为了确定色素聚合物对多层的特性的影响.
主要方法:
- 使用显微镜 (光,光,纳米-SEM),EPMA,XRF,XRD和微-拉曼光谱学分析三个5Y-PSZ盘 (Zr-AGG_A2,Zr-AGG_BL,Zr-NoAGG).
- 评估光学性能 (TP00),机械性能 (断裂性,硬度,双轴强度) 和热水稳定性.
- 微观结构和相组合分析,包括粒径和Y2O3含量评估.
主要成果:
- 染色 (Zr-AGG_A2/BL) 含有含有Er,Hf和Al的大型光聚合物,与未染色Zr-NoAGG相比,含有Y2O3含量较低的颗粒.
- Zr-AGG_A2表现出最低的抗衰老能力,其降解局部在色素聚合物内.
- 无色素Zr-NoAGG的TP00显著更高,曲强度和机械可靠性低于有色素Zr-AGG_A2/BL,尽管硬度和性相似.
结论:
- 含有稀土氧化物的环聚合物作为颜料,对光学和机械性能产生负面影响,并降低多层5Y-PSZ的耐老化性.
- 这些聚合物的存在是有色素多层烯酸性能较差的主要原因.
- 与有色素的变种相比,无色素的石具有优越的光学和机械特性,并且具有更好的耐老化能力.
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