散装复合材料厚度对粘合强度的影响
Ying Wang1, Jiaxue Yang2, Haifeng Xie2
1Dept. of Endodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Jiangsu Province Key Laboratory of Oral Diseases, Jiangsu Province Engineering Research Center of Stomatology, Nanjing 210029, China.
概括
大量填充复合材料以4毫米的增量在临床上是合适的,但有些可能有颜色稳定性问题. 树脂粘合强度受厚度的影响,散装填充材料的值低于传统材料.
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
背景情况:
- 大量填充树脂复合材料通过减少应用时间提供临床优势.
- 了解材料厚度对性能的影响对于可预测的临床结果至关重要.
研究的目的:
- 评估厚度对批量填充和传统树脂复合材料的半透明度,硬度和微拉伸键强度的影响.
- 为了比较散装填充复合材料 (Filtek散装填充后部,Tetric N-Ceram散装填充) 与常规复合材料 (Filtek Z100,Spectrum TPH) 在不同深度的性能.
主要方法:
- 研究的半透明度参数 (TP),颜色差异,维克尔硬度 (HV) 和微拉伸键强度 (μTBS).
- 在不同的深度测试了四种树脂复合材料 (FBF,TBF,Z100,ST),以模拟不同的厚度.
- 使用散装填充和增量填充技术进行比较.
主要成果:
- 在所有材料中,透光度和硬度随着复合材料厚度的增加而下降.
- 与同等深度的常规复合材料相比,散装复合材料的透光度较高,但微拉伸键强度较低.
- 大多数复合材料显示出良好的色彩稳定性,尽管一些散装填充材料有局限性.
结论:
- 散装复合材料的单个4毫米的增量足以用于临床使用的粘合强度.
- 某些散装树脂复合材料的色彩稳定性可能会受到损害,需要进一步调查.
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