在重复加热周期和染色后,单色树脂基复合材料的颜色和半透明度变化
Corina Mirela Prodan1, Cristina Gasparik1, Javier Ruiz-López2
1Department of Prosthetic Dentistry and Dental Materials, Iuliu Hatieganu University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania.
Materials (Basel, Switzerland)
|May 27, 2023
概括
对Omnichroma树脂复合材料的重复预聚合加热会导致临床上可接受的颜色和半透明度变化. 然而,随后的染色会导致不可接受的颜色变化,尽管更多的加热周期稍微减少了这些差异.
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
- 生物材料是一种生物材料.
背景情况:
- 研究预聚合加热对牙科树脂复合材料的影响.
- 评估单色复合材料的色彩稳定性和半透明度变化.
研究的目的:
- 为了确定重复预聚合加热对Omnichroma (OM) 复合材料颜色和半透明度的影响.
- 评估加热周期对染色后OM复合材料颜色稳定性的影响.
主要方法:
- 制造56个OM复合样本 (厚度为1毫米).
- 在聚合之前,在45°C进行1,5或10个加热周期.
- 在用黄色染料溶液染色之前和之后测量颜色和半透明度 (CIE L*a*b*C*h°).
主要成果:
- 预聚合加热显著改变了OM复合材料的颜色坐标,白度 (WID00) 和半透明度 (TP00).
- 颜色和半透明度参数在染色后在加热组之间有显著差异.
- 染色后的颜色和白度差异超过了所有组的临床可接受性值.
结论:
- 重复的预聚合加热导致OM复合材料颜色和半透明度的临床上可接受的变化.
- 染色导致临床上不可接受的颜色变化,无论加热周期如何.
- 增加加热周期高达十倍,略微减少了染色后的颜色差异.
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