用于牙科应用的回收的光学特性
Chen Su1, Zhi-Cen Lu2, Xiong Ji1
1Postgraduate student, Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key Laboratory of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, PR China.
The Journal of prosthetic dentistry
|February 28, 2024
概括
再循环的石与新石相比,具有明显较低的半透明度和不透明度. 颜色差异超过了可接受的限度,表明回收是不适合匹配商业光学性能.
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
- 陶工程 陶工程
背景情况:
- 是广泛用于牙科,回收废物块是经济和环境有益的.
- 然而,回收的光学特性及其与原始材料的可比性在很大程度上仍未得到研究.
研究的目的:
- 这项体外研究旨在全面评估回收的光学特性.
- 具体来说,颜色,半透明度和不透明度在各种厚度和色调中进行了评估.
主要方法:
- 准备了60个原始样本 (C组) 和回收 (R组) 3mol% yttria稳定四角环氧多晶块.
- 标本按厚度 (1.0毫米,1.5毫米) 和阴影 (A1,A3) 分类.
- 使用光谱相量仪测量了光学特性 (色差 ΔE00,半透明度 TP,对比率 CR,光 OP),并通过SEM分析了粒径.
主要成果:
- 再循环 (R组) 与原始 (C组) (P<.001) 相比,显著降低了透光度 (TP) 和光度 (OP).
- 两组之间的颜色差异 (ΔE00) 从13.99到21.31不等,超过了临床上可接受的值.
- 厚度和阴影都显著影响了颜色差异,TP和OP随着回收基的厚度增加而减少.
结论:
- 再循环的石与商用石相比,具有较低的半透明度和不透明度.
- 显著的颜色差异表明,回收的体不能可靠地匹配原始材料的光学特性.
- 厚度的增加进一步降低了循环的半透明度和不透明度.
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