3D打印与磨砂树脂复合材料的柔性强度和硬度分析,适用于最终的皇冠
Hunaida Khaled Tayeb1, Nick Silikas2, Abdulrahman Jafar Alhaddad1
1Oral and Maxillofacial Prosthodontics Department, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Journal of functional biomaterials
|December 24, 2025
概括
与3D打印树脂复合材料相比,磨砂牙冠表现出优越的机械性能,包括更高的屈曲强度和硬度. 虽然3D打印材料表现出相似的性能,但在高压力应用中,研磨选项更适合.
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
- 添加剂制造 添加剂制造 添加剂制造
背景情况:
- 随着3D打印牙科修复的日益普及,需要将它们的机械性能与传统磨材料进行比较.
- 了解最终的3D打印树脂复合材料与制对应物的机械行为对于临床应用至关重要.
研究的目的:
- 为了比较3D打印和研磨最终牙冠材料的机械性能 (屈曲强度,屈曲模量,硬度).
- 研究填充剂含量对这些材料机械性能的影响.
主要方法:
- 评估了三种3D打印的树脂 (PCR,VCP,CT) 和三种磨砂块 (BC,HC,Gr).
- 使用灰方法评估填料含量.
- 通过三点曲试验测量曲强度和模量.
- 确定马斯硬度和缩/维克斯硬度使用缩测试仪.
主要成果:
- 磨砂块的曲强度 (155-244.5 MPa) 和马硬度 (434.7-858.4 N/mm2) 比3D打印树脂 (FS: 128-143.6 MPa,HM: ~217 N/mm2) 显著更高.
- 填料含量与屈曲强度和马斯硬度有很强的相关性.
- 3D打印材料表现出相似的机械性能,而制块之间显示出显著的差异.
结论:
- 与3D打印替代品相比,磨砂树脂复合材料提供了更高的强度和硬度.
- 3D打印材料可能适用于经受低至中等密闭负荷的牙科修复.
- 建议进行进一步的研究,以评估3D打印牙复合材料的长期临床性能.
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