School of Mechanical Engineering, University of Jinan, Jinan, 250022, China.
School of Mechanical Engineering, University of Jinan, Jinan, 250022, China.
J Mech Behav Biomed Mater. 2024 Dec;160:106718. doi: 10.1016/j.jmbbm.2024.106718. Epub 2024 Sep 3.
Zirconia and resin are the most commonly utilized materials in dental restorations. However, zirconia presents significant wear on opposing teeth, whereas resin materials have low wear resistance and mechanical performances. A zirconia-resin interpenetrating phase composite (IPC) dental restoration was designed and fabricated using 3D printing and vacuum infiltration processes, incorporating zirconia scaffolds with triply periodic minimal surfaces (TPMS) structures. The mechanical and tribological performances of the IPCs were investigated through compressive and tribological experiments and finite element analysis, elucidating the influence of zirconia volumetric fraction. Results showed that IPCs exhibit excellent mechanical and tribological compatibilities, which can reduce the damage and wear of the antagonistic teeth. This designing and manufacturing strategy enables the IPC restorations with promising applications in dentistry.
氧化锆和树脂是牙科修复中最常用的材料。然而，氧化锆会对相对的牙齿造成显著的磨损，而树脂材料的耐磨性和机械性能较低。本研究采用 3D 打印和真空渗透工艺设计并制备了一种氧化锆-树脂互穿相复合材料（IPC）牙科修复体，其中包含具有三重周期性极小曲面（TPMS）结构的氧化锆支架。通过压缩和摩擦学实验以及有限元分析研究了 IPC 的力学和摩擦学性能，阐明了氧化锆体积分数的影响。结果表明，IPC 具有优异的力学和摩擦学相容性，可减少对敌对牙齿的损伤和磨损。这种设计和制造策略为 IPC 修复体在牙科领域的应用提供了广阔的前景。
