垂直边缘间隙和内部合适的基于维吉利特的二氧化玻璃陶 Veneers 与不同的制备设计
Amr Rizk1, Ahmed Abdou2, Amira Mohammad Samy3
1Department of Prosthetic Dentistry, Faculty of Dentistry, King Salman International University, South Sinai, Egypt.
概括
这项研究比较了脱酸盐 (LDS) CAD-CAM块,发现衰老显著影响垂直边缘差距,但所有适合性仍然在临床上可接受. 在材料和制剂设计之间,内部适合性是可比的.
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:
- 二酸盐 (LDS) 玻璃陶广泛用于牙科修复.
- 计算机辅助设计和制造 (CAD-CAM) 技术使得陶修复的精确制造成为可能.
- 评估这些材料的长期稳定性和适合性对于临床成功至关重要.
研究的目的:
- 为了比较常规LDS和含有维吉利特的LDSCAD-CAM块的内部适合和边缘适应.
- 评估老化对这些陶材料适应性和适应性的影响.
- 评估两种不同的制备设计对它们对恢复适应性的影响.
主要方法:
- 使用了72个环氧模具,具有两种制备设计 (切肢关节和切肢重叠).
- 测试了两种类型的CAD-CAM块:IPS e.max CAD和Tessera先进的二酸盐 (ALD).
- 使用复制技术和立体显微镜测量内部适应;在热循环前后评估垂直边缘间隙.
主要成果:
- 在测试的CAD-CAM材料或制剂设计之间没有观察到内部适合的显著差异.
- 老龄化显著影响了垂直边际差距 (p < 0.001).
- 准备设计和CAD-CAM材料对垂直边缘差距没有显著影响.
结论:
- IPS e.max CAD和CEREC Tessera CAD显示了两种准备设计的可比内部适合和垂直边缘差距.
- 衰老显著影响了层状 Veneers 的垂直边缘间隙,但所有值都保持在临床上可接受的范围内.
- 材料和制剂设计都显示出适合性和老化后适应性方面可接受的临床性能.
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