发光二极管装置产生的常规,软启动和脉冲延迟模式对金属支架的结合强度和质损伤的影响:一个体外比较研究
Yasser Munther Najjar1, Ahmad S Burhan2, Mohammad Y Hajeer1
1Department of Orthodontics, University of Damascus Dental School, Damascus, Syria.
International orthodontics
|July 2, 2023
概括
与传统模式相比,软启动和脉冲延迟光固化模式可以提高金属支架的结合强度. 这些方法可以提高结合强度,而不会增加质损伤,尽管保守的解结仍然是必要的.
科学领域:
- 牙科材料科学 牙科材料科学
- ортодонтическая技术 ортодонтическая技术 ортодонтическая 技术 在牙上
背景情况:
- 光固化模式显著影响牙粘合剂的性能.
- 优化光固化协议对于有效的支架结合和最大限度地减少阳性损伤至关重要.
研究的目的:
- 为了比较与传统,软启动和脉冲延迟光固化模式固化的金属支架的剪切键强度和质微裂纹形成.
主要方法:
- 60个提取的前被分为三组,每组都经历了不同的光固化模式 (传统,软启动,脉冲延迟).
- 金属支架被粘合在一起,并使用通用测试机测试剪接强度.
- 使用立体显微镜分析了面微裂.
主要成果:
- 与传统模式 (12.14±3.79MPa) 相比,软启动和脉冲延迟模式产生了明显更高的剪接强度 (分别为19.46±4.90MPa和20.47±4.97MPa).
- 在软启动和脉冲延迟组之间没有观察到键强度的显著差异.
- 所有组都显示在解后质微裂的增加,小组之间的微裂长度没有显著差异.
结论:
- 与传统模式相比,软启动和脉冲延迟光固化模式为金属支架提供了优越的粘合强度.
- 这些高级模式可以实现增强的结合强度,而不会增加面膜在解结过程中对损伤的易感性.
- 尽管改善了粘合,但保守的解技术在正牙实践中仍然是必不可少的.
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