评估光强度和光方向对复合树脂中微泄漏的影响
1Department of Restorative Dentistry, Faculty of Dentistry, Adıyaman University, Adıyaman, Turkey. savassagmak@adiyaman.edu.tr.
BMC oral health
|February 12, 2026
概括
在牙科修复中聚合缩小是一个复杂的问题. 应用光线的方向显著影响微漏,牙边缘的泄漏率高于切口边缘.
科学领域:
- 牙科材料科学 牙科材料科学
- 恢复性牙科 恢复性牙科
- 聚合物化学 聚合物化学
背景情况:
- 复合树脂的聚合收缩会导致微隙和微泄漏,损害牙修复的寿命.
- 虽然存在各种光固化技术,但完全防止微泄漏仍然是一个挑战.
- 高光强度可以减少固化时间,但可能会加剧聚合应激和微泄漏.
研究的目的:
- 研究不同光强度和应用方向对复合树脂修复中微漏的影响.
- 为了评估光固化装置类型和光应用方向对边际完整性的影响.
主要方法:
- 使用了48个没有的切口牙,有V类腔.
- 根据照射方向 (唇部,切口,舌头) 和光固化装置类型 (木 i LED 2500 mW/cm2,3M ESPE Elipar 1200 mW/cm2) 牙被分为几组.
- 使用基本的富辛染料和立体显微镜评估了微漏,并通过克鲁斯卡尔-瓦利斯测试分析了数据.
主要成果:
- 根据光固化装置类型 (p=0.274) 发现微泄漏没有统计学意义上的差异.
- 与切口边缘 (p=0.000) 相比,在牙边缘的微小损伤显著更高.
- 光应用方向显著影响了微泄漏,切口和舌头方向之间有显著差异 (p=0.002).
结论:
- 聚合缩减是一个多因素问题,受光强度和应用方向的影响.
- 光线应用的方向是影响复合材料修复中微漏的关键因素.
- 最佳的临床成功需要对光强度,应用方向和材料选择进行综合考虑.
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