在维克斯微硬度和一个树脂复合材料的入深度上的入器负荷的影响
Richard B Price1, Braden Sullivan1
1Department Dental Clinical Sciences, Dalhousie University, 5981 University Avenue, Halifax, NS B3H 4R2, Canada.
Materials (Basel, Switzerland)
|January 8, 2025
概括
在Tetric EvoCeram 大量填充的大部分表面上,孔负荷并没有显著影响维克尔硬度. 然而,增加负载确实增加了未抛光的底面的硬度,而抛光则提高了转换程度.
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
- 材料测试 材料测试 材料测试
背景情况:
- 微硬度是基于树脂的复合材料 (RBC) 的一个关键性质.
- 隙负荷和表面特征可以影响微硬度测量.
- 了解这些因素对于准确的材料表征至关重要.
研究的目的:
- 为了研究缩负荷对特定红细胞的维克斯微硬度的影响.
- 评估抛光对微硬度和转化程度的影响.
- 要确定表面位置 (上下) 是否影响这些属性.
主要方法:
- 维克斯微硬度和转换度 (DC) 在Tetric EvoCeram批量填充器上测量.
- 在抛光之前和之后,在顶部和底部表面进行了测量.
- 50,100,300和1000-gf的内负荷被用于中期FT-IR光谱学进行直流分析.
主要成果:
- 入器负荷对未抛光的顶部,抛光的顶部或抛光的底部表面的维克尔硬度没有显著影响.
- 增加的内置载荷显著增加了未抛光的底面上的维克尔硬度.
- 抛光显著增加了DC,在顶部增加了13.5%,在底部增加了46.7%.
结论:
- 进口负荷对这个RBC的维克斯硬度的影响有限,除了未抛光的底面.
- 抛光显著提高了所有表面的转换程度.
- 这些发现强调了在对牙科复合材料的微硬度测试中考虑表面状况和负载的重要性.
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