完全结晶的基于玻璃的CAD/CAM陶的疲劳行为
Shujiang Chen1, Chun Yin Kam2, Yun Hong Lee2
1Dental Materials Science, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
Journal of dentistry
|September 21, 2025
概括
新的全结晶脱酸盐 (LISI) CAD/CAM陶与其他基于玻璃的材料相比,显示出更高的疲劳可靠性. 这一发现支持其在需要耐用性的牙科修复中使用.
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
- 陶工程 陶工程 陶工程
背景情况:
- 计算机辅助设计/计算机辅助制造 (CAD/CAM) 陶广泛用于牙科修复.
- 研究新型陶的疲劳行为对于临床寿命至关重要.
- 完全结晶的二酸盐代表了一类新的CAD/CAM材料.
研究的目的:
- 为了比较一种全新的完全结晶的二酸盐 (LISI) CAD/CAM陶的疲劳性能.
- 将LISI与现有的基于玻璃的CAD/CAM材料 (含有的酸盐[ZLS]和基于白的玻璃陶) 相比进行评估.
- 评估这些材料的结构可靠性和疲劳故障负载 (FFL).
主要方法:
- 通过三点曲测试了LISI,ZLS (DUO) 和Empress CAD (EMP) 的屈曲强度和模量.
- 从这些材料制造的CAD/CAM冠状经过湿循环阶段应力加载,直到断裂.
- 使用ANOVA,克鲁斯卡尔-瓦利斯,韦布尔分析和曼特尔-科克斯日志等级测试分析数据.
主要成果:
- 在材料之间没有发现曲模块的显著差异.
- 疲劳失效负载 (FFL) 和失效周期 (NCF) 没有显著的群体差异,除了LISI的NCF高于EMP.
- 尽管生存概率相似,LISI的FFL,结构可靠性最高,相对标准偏差 (RSD) 最低.
结论:
- 所有经过测试的椅子边CAD/CAM材料都表现出适合单单元牙科修复的足够的疲劳性能.
- 完全结晶的二酸盐 (LISI) 材料在疲劳负荷条件下显示出增强的结构可靠性和卓越的性能.
- 利西 (LISI) 是用于持久牙科修复的有前途的材料.
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