Olawumi Mattew A, Omigbodun Francis T, Oladapo Bankole I
Computing, Engineering and Media, De Montfort University, Leicester LE1 9BH, UK.
Wolfson School of Mechanical, Electrical and Manufacturing Engineering, Loughborough University, Loughborough LE11 3TU, UK.
Biomimetics (Basel). 2024 Oct 18;9(10):642. doi: 10.3390/biomimetics9100642.
This research aims to enhance the surface quality, mechanical properties, and biocompatibility of PEEK (polyether-ether-ketone) biomimetic dental implants through laser polishing. The objective is to improve osseointegration and implant durability by reducing surface roughness, increasing hydrophilicity, and enhancing mechanical strength. The methodology involved fabricating PEEK implants via FDM and applying laser polishing. The significant findings showed a 66.7% reduction in surface roughness, Ra reduced from 2.4 µm to 0.8 µm, and a 25.3% improvement in hydrophilicity, water contact angle decreased from 87° to 65°. Mechanical tests revealed a 6.3% increase in tensile strength (96 MPa to 102 MPa) and a 50% improvement in fatigue resistance (100,000 to 150,000 cycles). The strength analysis result showed a 10% increase in stiffness storage modulus from 1400 MPa to 1500 MPa. Error analysis showed a standard deviation of ±3% across all tests. In conclusion, laser polishing significantly improves the surface, mechanical, and biological performance of PEEK implants, making it a promising approach for advancing biomimetic dental implant technology.
本研究旨在通过激光抛光提高聚醚醚酮（PEEK）仿生牙种植体的表面质量、力学性能和生物相容性。目的是通过降低表面粗糙度、增加亲水性和提高机械强度来改善骨整合和种植体耐久性。该方法包括通过熔融沉积成型（FDM）制造PEEK种植体并进行激光抛光。重要发现表明，表面粗糙度降低了66.7%，表面粗糙度平均高度（Ra）从2.4µm降至0.8µm，亲水性提高了25.3%，水接触角从87°降至65°。力学测试显示，拉伸强度提高了6.3%（从96MPa提高到102MPa），抗疲劳性提高了50%（从100,000次循环提高到150,000次循环）。强度分析结果表明，储能模量提高了10%，从1400MPa提高到1500MPa。误差分析表明，所有测试的标准偏差为±3%。总之，激光抛光显著改善了PEEK种植体的表面、力学和生物学性能，使其成为推进仿生牙种植体技术的一种有前景的方法。
