3D打印和热成型EVA定制口罩的生物力学分析:实验和有限元分析
Airin Karelys Avendaño Rondon1, Izabela Batista Cordeiro1, Maribí Isomar Terán Lozada1
1Department of Operative Dentistry and Dental Materials, Dental School, Federal University of Uberlândia, Uberlândia, Uberlândia, Minas Gerais, Brazil.
概括
这项研究发现,3D打印的聚合物和乙烯乙酸乙烯 (EVA) 口罩在撞击时有效地减少了牙的压力和应变,对牙创伤提供了可比的保护.
科学领域:
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
- 机械工程 机械工程
背景情况:
- 正在探索3D打印材料用于口罩制造.
- 关于它们在预防牙创伤方面的生物力学性能存在有限的数据.
研究的目的:
- 将3D打印聚合物和口罩的EVA薄膜的机械性能和冲击应力-应变行为进行比较.
- 使用有限元分析 (FEA) 分析性能.
主要方法:
- 测试了两种3D打印的聚合物 (KeyGuard,DimaPrint) 和三种EVA薄膜 (Bio-art,Essence Dental,Proform) 的使用.
- 测量Shore A硬度,破裂力,延长,最终抗拉强度,弹性模量,密度和波松比.
- 使用FEA模拟撞击上部模型,有或没有口罩.
主要成果:
- 在材料之间的机械性能中发现了显著的差异 (p < 0.01).
- 所有的口罩都在撞击时减少了牙的压力和应变,显示出相似的冲击吸收能力.
- 3D打印的聚合物显示Poisson比率高于EVA;密度相似.
结论:
- 尽管机械性能不同,3D打印的聚合物和EVA口罩对牙创伤提供了相似的保护.
- 所有经过测试的口罩都有效地减轻了对受冲击的牙的压力和压力.
相关概念视频
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