颜色依赖聚合:固化时间对彩色聚合物的转化度和微硬度的影响
Ozgul Carti Dorterler1, Fatma Yilmaz2, Ozge Tokul Olmez3
1Department of Pediatric Dentistry, Faculty of Dentistry, Mugla Sitki Kocman University, Mugla 48000, Turkey.
Polymers
|August 14, 2025
概括
彩色复合物表现出较低的转化率和根据阴影和固化时间的不同微硬度. 优化方案对于有效的儿科牙科治疗至关重要.
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:
- 由于其美学特性,复合剂在儿科牙科中被广泛使用.
- 转换度 (DC) 和微硬度是影响牙科修复材料临床性能的关键参数.
- 染料对这些特性的影响需要进一步调查.
研究的目的:
- 研究不同色调和固化时间对彩色复合物的转化度 (DC) 和微硬度的影响.
- 为了确定特定的颜色色调或固化协议是否增强或减少复合物性质.
- 为各种彩色复合物建立直流和微硬度之间的相关性.
主要方法:
- 准备162个组合体样本,分别采用8种颜色和对照组.
- 将样品细分为具有不同光强度和时间的三个聚合子组 (3s/3200 mW/cm2,10s/1000 mW/cm2,20s/1000 mW/cm2).
- 使用福里埃变换红外光谱 (FTIR) 分析直流,使用维克斯测试分析微硬度,然后进行双向ANOVA和斯皮尔曼相关性.
主要成果:
- 彩色复合剂的直流比对照组明显低 (p ≤ 0.001).
- 绿色显示DC最低 (33.3%),而色显示最高 (51.0%). 固化时间显著影响了直流 (p = 0.005),3s和20s组的表现优于10s.
- 微硬度因颜色 (p < 0.001) 有显著差异,金色是最低的,银色与对照类相比较. DC和微硬度 (ρ = 0.42,p = 0.003) 之间的整体相关性中等,但取决于颜色.
结论:
- 颜色阴影和固化时间显著影响复合物的转化程度和微硬度.
- 高强度短固化适用于较浅的色调,而较深的色调需要更长的固化时间.
- 量身定制的治愈方案对于优化儿童牙科中复合物性能和临床结果至关重要.
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