在不同的烧结参数下,高氧化物合的单色和多层部分稳定的颜色特征
Niwut Juntavee1, Apa Juntavee2, Chutikarn Jaralpong3
1Department of Prosthodontics, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand.
European journal of dentistry
|June 28, 2024
概括
烧结温度和时间显著影响石.
科学领域:
- 牙科材料科学 牙科材料科学
- 陶工程 陶工程
- 材料的光学性能 材料的光学性能
背景情况:
- 的光学特性对于美观的牙科修复至关重要.
- 烧结是一个关键的后加工步骤,影响的微观结构和光学特性.
- 单色 (Mo) 和多层 (Mu) 氧化配方表现出不同的烧结行为.
研究的目的:
- 研究不同烧结温度和时间对单色和多层5Y-PSZ的颜色特征的影响.
- 确定最佳的烧结参数,以实现合金牙科材料的理想光学特性.
主要方法:
- 准备300个5Y-PSZ标本 (Mo和Mu类型).
- 在三个温度 (1450°C,1500°C,1550°C) 和四次 (10,15,30,135分钟) 的烧结.
- 使用CIE L*a*b*系统评估颜色外观,半透明度,对比率,不透明度和颜色差异;通过SEM和XRD进行微结构分析.
主要成果:
- 烧结参数显著影响了所有评估的颜色参数 (p < 0.05).
- 烧结温度和时间的增加导致粒度更大,相变化减少,透光度和光度提高,对比率和颜色差异降低.
- 降低烧结温度/时间导致临床上不可接受的颜色外观.
结论:
- 单色石比多层石具有更高的半透明度.
- 建议增加烧结温度和延长烧结时间,以获得最佳的光学性能.
- 缩短烧结时间是可行的,当与增加的温度相结合,以获得有利的颜色外观.
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