老化和漂白对最近引入的一种单色复合树脂颜色稳定性和表面粗性的影响
Siyang Chen1, Jiakang Zhu1, Miaoyang Yu1
1The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Luoyu Road 237, Wuhan, Hubei 430079, PR China.
Journal of dentistry
|March 2, 2024
概括
一种新的单色复合树脂在老化和漂白后显示出比多色树脂更大的变色. 虽然漂白提高了白度,但它增加了所有测试的复合树脂的表面粗度.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料研究 生物材料研究
- 审美牙科 审美牙科
背景情况:
- 牙科复合树脂广泛用于修复.
- 评估新材料的长期色彩稳定性和表面完整性至关重要.
- 老化和漂白程序可以显著影响牙科复合材料的性能.
研究的目的:
- 为了比较新型单色复合树脂的颜色稳定性和表面粗性,与已建立的多色复合树脂进行比较.
- 评估老化 (浸泡在水中,浸泡在咖啡中,热循环) 和随后的漂白对这些特性的影响.
主要方法:
- 测试了四种复合树脂 (1个单色:CDO;3个多色).
- 标本通过浸泡在水中,浸泡在咖啡中或热循环进行老化.
- 所有老化的标本都经过了室内漂白程序.
- 测量了颜色变化 (ΔE00),半透明度 (RTP),白度 (WID) 和表面粗度 (Sa, Sv).
主要成果:
- 所有复合树脂在经过老化和漂白后都显示出颜色,半透明度,白度和表面粗度的变化.
- 与多色彩树脂相比,单色CDO表现出更大的变色 (ΔE00) 和半透明度变化.
- 咖啡浸泡导致了最显著的变色和最低的半透明度.
- 漂白改善了白度,但增加了所有材料的表面粗度 (Sa,Sv).
结论:
- 单色复合树脂 (CDO) 比多色替代品更容易变色.
- 漂白可以部分逆转颜色变化,但不能完全恢复原来的阴影,特别是在咖啡暴露后.
- 漂白程序显著增加复合树脂的表面粗度,可能需要重新抛光.
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