牙表面条件和树脂水泥固化方式对牙结合强度的影响
Sung-Ae Son1, Jae-Hoon Kim2, Deog-Gyu Seo3
1Department of Conservative Dentistry, Dental and Life Science Institute, School of Dentistry, Pusan National University, Dental Research Institute.
Dental materials journal
|May 8, 2024
概括
优化树脂水泥的结合强度需要仔细注意牙制备. 光固化粘合剂并使用5秒的干燥时间显著提高了结合强度,相比于联合固化和更长的干燥时间.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 粘合式牙科 粘合式牙科
背景情况:
- 实现长久的树脂水泥与牙的结合对于牙科修复的长寿至关重要.
- 影响牙-树脂水泥结合强度的因素需要持续调查以优化临床方案.
研究的目的:
- 评估牙表面特征和粘合剂固化策略对树脂水泥微拉伸键强度的影响.
- 确定牙干燥时间和粘合剂固化模式的最佳条件,以提高粘合耐用性.
主要方法:
- 微拉伸键强度测试是在40颗人类牙的树脂-牙样本上进行的.
- 实验因素包括牙粗度 (240-vs. 600-grit SiC纸),空气干燥时间 (5s vs. 10s) 和粘合剂固化模式 (联合固化 vs. 单独光固化).
- 使用立体镜和共聚焦激光扫描显微镜分析了故障模式和粘合层形态.
主要成果:
- 粘合层的固化模式显著影响了粘合强度 (p<0.05),单独的光固化产生了比共固化更高的值.
- 与10秒相比,空气干燥时间缩短了5秒,从而提高了结合强度.
- 丁丁的粗度也起到了作用,尽管对其与其他因素相互作用的具体发现需要进一步详细说明.
结论:
- 建议对粘合剂进行单独的光固化和5秒的空气干燥期,以最大限度地提高树脂水泥与牙的结合强度.
- 临床方案应考虑这些变量,以提高粘合性牙科修复的成功和寿命.
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