在人工热机械老化后,自粘和自蚀自粘浮性复合材料的拉伸键强度和边际完整性
Mohanraj Kamatchi1, Ranganathan Ajay2, Murugesan Gawthaman1
1Department of Pedodontics and Preventive Dentistry, Vivekanandha Dental College for Women, Tiruchengode, Tamil Nadu, India.
International journal of clinical pediatric dentistry
|July 17, 2023
概括
自粘浮性复合材料 (SAF) 显示出比自蚀刻粘合剂 (SEA) 具有更高的抗拉强度 (TBS). 机械负荷对TBS产生负面影响,并增加了树叶的两种材料的微泄漏 (μLK).
科学领域:
- 儿科牙科 儿科牙科
- 牙科材料科学 牙科材料科学
- 粘合式牙科 粘合式牙科
背景情况:
- 主牙修复需要耐用和可靠的材料.
- 评估新材料,如自粘可流性复合材料 (SAF),对于改善临床结果至关重要.
- 在老化条件下了解材料的行为对于长期成功至关重要.
研究的目的:
- 为了比较自粘浮性复合材料 (SAF) 和自蚀粘剂 (SEA) 与常规浮性复合材料的抗拉强度 (TBS) 和边际完整性 (微漏,μLK).
- 评估人工热机械老化对这些特性的影响.
- 评估机械负荷对结合强度和边际完整性的影响.
主要方法:
- 使用了120个提取的初级牙.
- 拉伸键强度 (TBS) 和微泄漏 (μLK) 测试是在人工热力学老化后进行的.
- 标本被分为有机械负荷和没有机械负荷的组.
主要成果:
- 与SEA相比,SAF在机械负荷和没有机械负荷的情况下显示出明显更高的TBS.
- 机械负荷显著减少了TBS,并增加了两种材料的μLK.
- 在机械负荷下,在SAF和SEA之间观察到显著的μLK差异,但不是在没有负荷的情况下.
结论:
- 与SEA相比,SAF在老化后的叶落上提供了优越的结合强度和边际完整性.
- 机械负荷对两种修复系统的结合强度和边际完整性都有不利影响.
- SAF为恢复母牙提供了一个有前途的替代方案,可能减少椅子上的时间并提高临床服务能力.
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