使用OCT评估的3D打印复合材料的双体疲劳耐磨性
Fernando Antonio Reis Laurino1, Paulo Francisco Cesar2, Marcelo Munhóes Romano3
1University of São Paulo, School of Dentistry, Department of Stomatology, São Paulo, Brazil; Department of Restorative Dentistry, University of Washington, 1959 NE Pacific St., Seattle, WA 98195, USA.
概括
三种3D打印的CAD/CAM复合材料的耐磨性与制块相比,呈现出不同的耐磨性. 光学连贯断层扫描 (OCT) 有效地测量了这些牙科材料的磨损和地下损伤.
科学领域:
- 材料科学 材料科学 材料科学
- 生物材料工程 生物材料工程
- 牙科材料 牙科材料
背景情况:
- 计算机辅助设计/计算机辅助制造 (CAD/CAM) 复合材料在牙科中被广泛使用.
- 3D打印为制造牙科修复提供了一种新的方法.
- 评估3D打印复合材料的耐磨性对于临床应用至关重要.
研究的目的:
- 为了评估和比较三个3D打印的CAD/CAM复合材料的耐磨性,与传统造的CAD/CAM复合材料块相比.
- 为了研究这些材料在循环负荷下地下裂的形成.
- 为了证明光学连贯断层扫描 (OCT) 对非破坏性磨损评估的有用性.
主要方法:
- 准备了三个3D打印的复合材料 (C&B MFH,VarseoSmile CrownPlus,Nanolab 3D) 和一个制的复合材料 (Lava Ultimate).
- 标本经历了60万次模拟的周期.
- 光学连贯断层扫描 (OCT) 用于量化磨损体积和分析地下裂.
主要成果:
- 观察到耐磨性和裂发展的显著差异.
- Lava Ultimate 和 C&B MFH 的耐磨性最高,而 Nanolab 3D 的耐磨性最低.
- 纳米实验室3D显示了最显著的裂形成,而Lava Ultimate显示的裂明显减少.
结论:
- 3D打印的CAD/CAM复合材料具有可变的耐磨性,有些可比,有些低于制块.
- 牙复合材料是一种有价值的,非破坏性的工具,用于评估牙复合材料的磨损和地完整性.
- 对于3D打印修复的材料选择应考虑磨损性能和裂易感性.
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