基于树脂的复合材料的双轴屈曲强度的研究
Keiko Sakuma1, Taku Horie1,2, Takafumi Kishimoto1
1Department of Operative Dentistry, School of Dentistry, Aichi Gakuin University, Nagoya 464-8651, Japan.
Polymers
|July 13, 2024
概括
全面阴影牙复合材料显示了不同的强度. 粘贴类型的通用复合材料最初的性能优于传统的复合材料,但性降解使它们相等. 流动性通用复合材料始终表现出较低的强度,这表明在牙科应用中要小心使用.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
背景情况:
- 基于牙树脂的复合材料是广泛使用的修复材料.
- 通用阴影复合材料比传统类型具有美学优势.
- 性降解可能会影响牙复合材料的机械性能.
研究的目的:
- 为了研究通用阴影和传统牙科树脂基复合材料的双轴屈曲强度.
- 评估性降解对这些复合材料机械性能的影响.
- 为了比较粘贴类型和可流动的通用阴影复合材料与传统的复合材料.
主要方法:
- 从通用阴影和传统牙科树脂基复合材料制备磁盘样本.
- 在0.1M NaOH溶液中浸泡样本以诱导性降解.
- 在降解之前和之后,对双轴屈曲强度的测量和统计测试.
- 扫描电子显微镜对断裂表面的观察.
主要成果:
- 粘贴类型的通用阴影复合材料在降解之前显示出明显更高的双轴屈曲强度 (19%) 比传统的复合材料.
- 在性降解后,在类型的通用复合材料和常规复合材料之间没有观察到强度的显著差异.
- 可流动的通用阴影复合材料表现出明显较低的双轴屈曲强度 (约. 35%) 与传统复合材料相比,在降解之前和之后.
结论:
- 粘贴类型的通用阴影复合材料在降解之前保持其在传统类型上的机械优势.
- 性降解降低了粘贴型通用复合材料的初始强度优势.
- 可流动的通用阴影复合材料表现出持续较低的双轴屈曲强度,因此在临床应用中需要谨慎使用,以填充腔.
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