预热树脂复合材料的影响:纳米CT对空隙和内部适应性的评估
Venkata Suresh Venkataiah1, Rajaram Sundaravaradhan2, Deepak Mehta3,4
1Clinical Science Department, College of Dentistry, Centre of Medical and Bio-Allied Health Science Research, Ajman University, Al Jurf, Ajman, United Arab Emirates.
Odontology
|October 18, 2025
概括
预热树脂复合材料显著改善了适应性,并减少了牙科修复中的差距和空白. 这种技术增强了修复的寿命,即使固时间更短.
科学领域:
- 牙科材料科学 牙科材料科学
- 生物材料工程 生物材料工程
- 恢复性牙科 恢复性牙科
背景情况:
- 树脂复合材料修复中的边缘空隙和内部空隙损害了寿命,导致二次和失败.
- 预热树脂复合材料是一种新的策略,可以改善材料流动,增强适应性,并最大限度地减少聚合应激.
- 优化光固化协议对于有效的聚合和恢复完整性至关重要.
研究的目的:
- 调查预热树脂复合材料对二级修复中界面间隙百分比和内部空隙的影响.
- 在使用预热复合材料时,评估不同光固化时间对适应和空隙形成的影响.
- 评估预热作为提高后部复合修复质量的方法的有效性.
主要方法:
- 在人类大前中准备了标准化的II类腔.
- 确定了三组 (n=5):室温复合材料 (20秒处理),预热复合材料 (68°C,20秒处理) 和预热复合材料 (68°C,5秒处理).
- 使用高分辨率纳米CT成像量化间隙百分比和空洞体积,然后进行统计分析 (ANOVA,Tukey测试).
主要成果:
- 与室温控制相比,预热复合材料在修复牙接口上的差距百分比明显较低 (p < 0.0001).
- 使用预热复合材料和5秒固化方案的组表现出最低的间隙百分比和空体积.
- 两组之间没有发现空虚频率的显著差异.
结论:
- 预热树脂复合材料有效地提高了内部适应性,并减少了接口间隙和空隙体积.
- 这种技术为改善后部复合修复的临床结果提供了一个有希望和有效的方法.
- 预热可以减少固化时间,而不会影响恢复质量.
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