3D打印格子结构的单元细胞设计和体积分数对压缩反应和骨科螺丝拉伸强度的影响
Boonyanuch Suksawang1, Pisaisit Chaijareenont1, Patcharawan Silthampitag1
1Department of Prosthodontics, Faculty of Dentistry, Chiang Mai University, Chiang Mai 50200, Thailand.
Materials (Basel, Switzerland)
|March 27, 2025
概括
3D打印的格子设计对骨科应用的机械性能产生了重大影响. 量身定制的格子模仿骨密度,提供更好的螺丝固定和现实的医疗培训模型的潜力.
科学领域:
- 生物材料工程 生物材料工程
- 增材制造 增材制造 增材制造
- 骨科生物力学 骨科生物力学
背景情况:
- 3D打印的格子结构提供了可调节的机械性能.
- 优化格子设计对于骨科应用,如螺丝固定,至关重要.
- 目前的模型缺乏精确模拟不同骨密度的能力.
研究的目的:
- 评估3D打印格子的单元细胞设计和体积分数如何影响压缩反应.
- 评估格子参数对整形外科螺丝拉出强度的影响.
- 确定3D打印格子是否适合模拟骨特性.
主要方法:
- 使用FLatt Pack软件生成3D格子模型,具有各种单元细胞设计 (甲状腺,施瓦茨钻石,骨变体).
- 使用了两个光聚合物树脂 (刚性10k,标准灰) 和不同的相对密度 (30%,45%).
- 进行了单轴压缩试验和螺丝拉伸试验;使用ANOVA分析数据.
主要成果:
- 标准的灰色树脂格子表现出较高的应变耐受性和较低的软化比刚性10k.
- 设计和体积分数显著影响了压缩模量,螺丝拉伸强度和刚度 (p < 0.001).
- 拉出负荷在61.00-2839.42N之间,超过聚氨泡,但低于人骨.
结论:
- 3D打印的格子特性对单元细胞设计和体积分数非常敏感.
- 这些格子可以被设计成接近不同的骨密度.
- 这些发现支持使用3D打印格子来创建先进的骨科和牙科培训模型.
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