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光衰老对单色复合修复剂的结构,光学性能和粗度的影响

Aikaterini Petropoulou¹, Maria Dimitriadi², Spiros Zinelis²

¹Department of Fixed Prosthodontics, School of Dentistry, National and Kapodistrian University of Athens, 2 Thivon Str., 11527 Athens, Greece.

Journal of functional biomaterials

|September 27, 2024

概括

光衰老显著改变了单色牙复合材料,增加了粗度,导致颜色变化超过了可接受的水平,表明光降解. 牙复合材料的性能会受到光照的影响.

科学领域:

材料科学材料科学材料科学
牙科材料牙科材料
聚合物化学聚合物化学

背景情况:

一色牙复合材料提供了简化的应用.
了解它们在暴露于光线下的长期稳定性对于临床成功至关重要.
光衰老会影响复合材料的特性,如颜色,结构和表面质地.

研究的目的:

为了评估C=C转换度 (DC%),化学结构,光学特性和光衰老后单色复合材料粗度的变化.
为了比较光衰老对不同单色复合材料的影响.
确定光衰老是否会导致这些复合材料发生临床上不可接受的变化.

主要方法:

四种单色复合材料 (Charisma Topaz One,Clearfil Majesty ES-2 Universal,Essentia Universal,Omnichroma) 和一个控制材料 (G-aenial Anterior) 进行了测试.
标本使用Xe-arc气象仪进行了光衰老.
评估的属性包括DC%,化学结构 (ATR-FTIR),光学属性 (颜色,半透明度,不透明度,对比率,透射率) 和表面粗度 (光学造型测量).

主要成果:

光衰老改善了DC%,但引起了光降解 (降低了峰).
观察到颜色 (OMN,CNA,MES的ΔΕ>3.3),半透明度和透光度的显著变化.
所有材料在光衰老后都表现出增加的粗度,除了MES和OMN中的特定参数.

结论:

单色复合材料对光衰老的反应存在显著差异.
一些经过测试的复合材料表现出光降解,粗度增加和颜色变化超过临床接受值.
单色复合材料的临床寿命可能会因长时间暴露于光线而受到损害.

关键词:

在ATRFTIRIR中.紫外线 UVVis 的使用.转换的程度转换的程度.一个阴影的复合材料.通过光学造型测量进行光学造型测量.它们具有光学特性.摄影老化的照片.通过光降解进行光降解.粗性粗性粗性的

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