热衰老对二酸CAD/CAM冠状的边际适应的影响 具有深近接盒高度的深近接盒
Arwa Daghrery1, Eman Jabarti2, Bashayer H Baras3
1Department of Restorative Dental Sciences, School of Dentistry, Jazan University, Jazan, Saudi Arabia.
概括
热循环对牙科修复中边际适应产生负面影响. 大量填充可流动树脂复合材料在模拟老化后,与玻璃离子体和其他树脂复合材料相比,显示出更高的边际完整性.
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
- 生物材料工程 生物材料工程
背景情况:
- 深度边缘升高是一种将牙下腔边缘冠状移动的技术.
- 先进的二氧化陶用于牙科修复.
- 热循环模拟口内条件以评估材料的稳定性.
研究的目的:
- 评估热循环对深边缘升高恢复的边际适应的影响.
- 为了比较用于深层边缘提升的四种不同的修复材料:玻璃离子体,散装可流动树脂复合材料,生物活性树脂复合材料和纳米混合树脂复合材料.
- 为了评估计算机辅助设计和计算机辅助制造 (CAD/CAM) 的性能,在这些修复上放置了二氧化冠.
主要方法:
- 80个下牙经历了深层边缘升高,位于水泥结下方.
- 用玻璃离子体,批量填充可流动树脂复合物,生物活性树脂复合物或纳米混合树脂复合物进行了修复.
- 全面覆盖CAD/CAM脱酸盐皇冠被制造和化.
- 在15000个热循环周期之前和之后,在每个近接表面的6个点上使用数字显微镜测量边缘间隙.
- 数据使用单向ANOVA分析,显著度为0.05.
主要成果:
- 热循环显著增加了所有修复材料的垂直边际差距.
- 玻璃离子体填充显示了最高的垂直边缘间隙 (9.091微米在宫,9.936微米在顶端接口).
- 纳米混合树脂复合物 (3.59微米,3.87微米顶部) 和生物活性树脂复合物 (3.17微米,2.59微米顶部) 显示中间边际差距值.
- 大量填充可流动树脂复合材料显示了最小的垂直边缘间隙 (1.89微米宫,2.42微米顶端).
结论:
- 热循环显著损害了所有测试的修复材料的边际适应.
- 大量填充可流动树脂复合材料在热循环后提供了最佳的边际适应,其次是生物活性和纳米混合树脂复合材料.
- 玻璃离子体表现出最差的边际适应,表明深边缘升高应用中的潜在长期挑战.
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