不同的氧化含多层部分稳定的颜色特征变化在不同的烧结速率
Atthasit Boonbanyen1, Niwut Juntavee2, Apa Juntavee3
1Division of Biomaterials and Prosthodontics Research, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand.
European journal of dentistry
|April 23, 2025
概括
这项研究发现,在多层石中增加 yttria 含量和烧结速度可以提高透光度和颜色变化. 然而,这些变化仍在牙科修复所能接受的范围内.
科学领域:
- 牙科材料科学 牙科材料科学
- 陶工程 陶工程 陶工程
- 材料的光学性能 材料的光学性能
背景情况:
- 烧结是影响土牙科材料光学特性的一个关键过程.
- 多层石提供了美学优势,但需要精确的烧结控制.
- 伊特含量显著影响的相变化和光学特性.
研究的目的:
- 研究不同烧结速率对不同度 (3Y,4Y,5Y) 多层的颜色特征的影响.
- 为了评估烧结速度如何影响透光度,对比率,光度和牙科合金的颜色差异.
- 为了将光学特性与微观结构和结晶相变因烧结而引起的相对应.
主要方法:
- 准备了135个多层体样本 (3Y,4Y,5Y) 并以常规,快速和速度速度烧结它们.
- 通过CIEL*a*b*系统使用半透明度参数 (TP00),对比率 (CR),不透明度参数 (OP) 和色差 (ΔE00) 的量化光学特性.
- 分析了微观结构 (SEM),晶相 (XRD) 和表面粗度 (Ra),以了解属性变化.
主要成果:
- 烧结速度,含量和样品层显著影响了所有评估的光学特性 (p < 0.05).
- 较高的伊特里亚含量 (5Y > 4Y > 3Y),切口层 (I > M > C) 和更快的烧结 (SS > FS > RS) 增加了半透明度和颜色差异.
- 相反,较高的伊特里亚,切面层和更快的烧结降低了对比率和不透明度,颜色差异仍然在临床上是可以接受的 (ΔE00 ≤ 1.8).
结论:
- 增加 yttria 含量,利用切口层,并采用快速烧结,显著影响的光学特性,增强半透明度和颜色变化.
- 尽管有观察到的变化,但颜色差异仍在可接受的临床值内,这表明速度烧结是实现理想美学结果的可行方法.
- 微结构分析显示,颗粒大小具有更高的亚特里亚含量,XRD证实了向立方相转移,与光学属性变化相关.
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