微CT评估复合树脂的边缘和内部适应,使用不同的应用技术
Yuksel Piskin1, Esra Cengiz-Yanardag2
1Faculty of Dentistry, Department of Restorative Dentistry, Mersin University, Ciftlikkoy Campus, Yenisehir, Mersin, Turkey.
Scientific reports
|December 6, 2025
概括
这项研究比较了使用微CT的复合树脂适应性.SonicFill 2显示出比Tetric N-Ceram散装填充更多的边际差距,但所有测试的散装填充和常规复合树脂的内部适应性相似.
科学领域:
- 牙科材料科学 牙科材料科学
- 恢复性牙科 恢复性牙科
- 生物材料是一种生物材料.
背景情况:
- 复合树脂广泛用于牙科修复.
- 大量填充复合材料提供更快的放置,但需要评估适应.
- 了解边缘和内部适应对于恢复寿命至关重要.
研究的目的:
- 为了比较两种散装复合树脂 (SonicFill 2,Tetric N-Ceram散装填充) 和一种常规复合树脂 (Clearfil Majesty Posterior) 的边缘和内部适应.
- 通过微型计算机断层扫描 (micro-CT) 评估不同放置技术对适应的影响.
主要方法:
- 在21个人类第三牙中准备了标准化的牙腔.
- 使用声波激活 (SonicFill 2),单个4mm层 (Tetric N-Ceram批量填充) 或2mm增量 (Clearfil Majesty Posterior) 放置了恢复.
- 在微型CT扫描和分析之前,恢复经历了5000个热循环.
主要成果:
- 与Tetric N-Ceram批量填充相比,SonicFill 2的边际空隙体积显著增加 (p=0.023).
- 在涉及Clearfil Majesty Posterior的边际差距体积中没有发现显著差异.
- 在这三个组中,没有观察到内部空洞体积的显著差异 (p=0.101).
结论:
- 材料组成和放置技术在复合材料修复中影响边缘适应.
- 试验中的散装复合材料和常规复合材料表现出可比的内部适应性.
- 对材料特性的进一步研究是有必要的,以优化边际完整性.
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