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牙膏聚合物加工技术的机械评估

Cristina Modiga^1,2, Andreea Stoia³, Marius Traian Leretter⁴

¹Department of Prostheses Technology and Dental Materials, Faculty of Dental Medicine, University of Medicine and Pharmacy "Victor Babeş" Timișoara, Eftimie Murgu Sq. No. 2, 300041 Timişoara, Romania.

Journal of functional biomaterials

|August 28, 2024

概括

这项研究比较了使用不同制造方法制造的假牙的压力强度. 注塑成型产生了最强的假牙,而3D打印的假牙是最弱的,这表明材料性能存在显著差异.

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
牙修复牙修复牙修复牙修复牙修复

背景情况:

聚合物材料的进步提高了假牙的耐用性和性能.
聚合物材料和加工技术的变化需要了解其机械和物理性能.
研究通过不同方法生产的假牙的压力强度对于材料选择至关重要.

研究的目的:

为了比较使用传统,注塑和CAD/CAM (计算机辅助设计/计算机辅助制造) 技术制造的完整假牙的压力强度.
根据其制造工艺,评估聚甲基甲酸 (PMMA) 假牙的机械性能.

主要方法:

使用聚甲基甲酸 (PMMA) 制造完整的假牙,采用传统的包装压力,注塑,添加式CAD/CAM和减法CAD/CAM方法.
样品经过标准化的压力机械测试,以确定故障点.
记录了每个加工技术的最大力和断裂能量.

主要成果:

所有假牙样本在负载下破裂,表现出脆性失败而不是塑性变形.
破裂的平均力是:传统的 (4.54 kN),注塑 (17.92 kN),添加式CAD/CAM (1.51 kN) 和减法式CAD/CAM (5.9 kN).
注塑成型产生了最高的压力强度,而增材CAD/CAM (3D打印) 产生了最低的.

结论:

与其他方法相比,热塑性注塑模具的压力强度更高.
增材CAD/CAM (3D打印) 假牙表现出最低的压力强度和稳定性.
减法CAD/CAM削提供了绝对性质和稳定性的良好平衡,使其成为可靠的选择.

关键词:

通过3D打印打印3D打印.假牙的聚合物假牙聚合物机械测试机械测试机械测试聚合物注射方式处理技术的处理技术.这是一种替代性的CAD/CAM技术.

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