自雕刻粘合剂的微拉伸粘合强度 在用赫西丁处理的牙上
C O D A Furtado1, K Baroudi2,3, M Amaral3
1School of Dentistry, Federal University of Juiz de Fora (UFJF).
The European journal of prosthodontics and restorative dentistry
|December 13, 2023
概括
用赫西丁 (CHX) 预处理牙,可显著降低自蚀刻牙粘合剂的微拉伸键强度. 在不同的粘合系统和技术中观察到这种效应,这表明了潜在的临床问题.
科学领域:
- 牙科材料科学 牙科材料科学
- 粘合式牙科 粘合式牙科
- 生物材料研究 生物材料研究
背景情况:
- 赫西丁 (CHX) 由于其在牙科中的抗菌特性而被广泛使用.
- 自蚀刻和全蚀刻技术是牙粘合剂应用的常见方法.
- 了解CHX和牙粘合剂之间的相互作用对于优化粘合强度和寿命至关重要.
研究的目的:
- 为了研究2%的二氧化二重酸盐 (CHX) 对应用于牙的自蚀刻粘合剂系统的微拉伸键强度的影响.
- 为了比较两个不同的粘合剂系统 (Clearfil SE和Scotchbond Universal) 的粘合强度,先前进行CHX处理和不进行CHX处理.
- 用SEM和EDX分析评估CHX对断裂模式和材料组成的影响.
主要方法:
- 准备了20个人的牙,并根据粘合剂系统 (Clearfil SE,Scotchbond Universal),应用技术 (自蚀刻,总蚀刻) 和CHX预处理,分为八个实验组.
- 应用了复合树脂,样品经过微拉伸键强度测试.
- 扫描电子显微镜 (SEM) 和能量散射X射线 (EDX) 用于微观结构和元素分析.
主要成果:
- 在使用自蚀刻技术时预先治疗CHX的组观察到微拉力键强度的显著下降 (例如,SE与CHX:22.86±5.18MPa对比5.18MPa). 没有CHX的SE: 39.77±11.56MPa).
- 采用CHX的自蚀刻技术组表现出粘合类型骨折,而全蚀刻组在混合层表现出凝聚性骨折.
- EDX分析证实了CHX处理的自我蚀刻组中存在CHX晶体,但在总蚀刻组中没有.
结论:
- 赫西丁在牙上预先应用会对自蚀刻粘合剂系统的粘合强度产生负面影响.
- 在自蚀刻粘合剂的混合层中存在CHX晶体,可能会损害粘合物的完整性.
- 临床医生应在自蚀刻粘合剂应用之前使用CHX时谨慎使用,以避免减少粘合力的耐用性.
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