一种新型原料能够增强自我固化的树脂复合材料的聚合
Juliana Anany Gonzales Guarneri1, Cristiane Maucoski2, Soheil Ghaffari2
1Department of Dental Clinical Sciences, Dalhousie University, Faculty of Dentistry, Halifax, Nova Scotia, Canada; Department of Restorative Dentistry, State University of Ponta Grossa, Ponta Grossa, Parana, Brazil.
概括
斯泰拉原料显著提高了斯泰拉Automix的转换 (DC) 的程度,这是一个自我固化的散装填充树脂复合材料. 建议在光固化过程中使用Stela和它的原料,以获得最佳的结果.
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
- 生物材料工程 生物材料工程
背景情况:
- 大量填充树脂基复合材料在后部修复中提供了临床优势.
- 优化转换度 (DC) 和聚合动力学对于材料的寿命和性能至关重要.
- 自固复合材料为光固化材料提供了替代品,特别是在散装场景中.
研究的目的:
- 评估一种新的自我固化的散装填充树脂复合材料 (Stela Automix) 的转化程度 (DC),聚合动力学和温度变化.
- 为了比较Stela Automix的性能,有和没有专门的原料,以及光固化激活.
- 评估一种通用粘合剂对Stela Automix的特性的影响.
主要方法:
- 建立了七个实验小组,用Stela Primer和/或光固化对Stela Automix的应用进行了变化.
- 转换度 (DC) 和实时聚合动力学被测量使用光谱学与一个减弱总反射探测器.
- 使用红外热摄像头在人类牙的I类腔中监测温度变化.
主要成果:
- 在2mm深度,Stela Primer与Stela Automix的组合产生了最高的直流电流 (72.4%).
- 斯泰拉Automix表现出自我固化能力,但效果不如与其原料一起使用时.
- 光固化Stela Automix导致了最大的温度增加,其次是Stela Primer与Stela Automix和光固化.
结论:
- 斯泰拉初始化剂显著加速并提高了斯泰拉Automix的转换程度.
- 当与Stela Primer结合使用时,可以实现Stela Automix的最佳性能.
- 不建议在20秒内将Stela Automix光固化,因为它提供的益处低于使用原料,并且会增加温度.
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