Additive manufacturing of metallic and polymeric load-bearing biomaterials using laser powder bed fusion:A review

• 作者: Alireza Nouri Anahita Rohani Shirvan Yuncang Li Cuie Wen
• 来源期刊: 材料科学技术（英文版）
• 年，卷（期）: 2021,（35）
• 页码范围: 196-215
• 页数: 20页
• 语种: 英文

摘要

Surgical prostheses and implants used in hard-tissue engineering should satisfy all the clinical,mechani-cal,manufacturing,and economic requirements in order to be used for load-bearing applications.Metals,and to a lesser extent,polymers are promising materials that have long been used as load-bearing bioma-terials.With the rapid development of additive manufacturing (AM) technology,metallic and polymeric implants with complex structures that were once impractical to manufacture using traditional process-ing methods can now easily be made by AM.This technology has emerged over the past four decades as a rapid and cost-effective fabrication method for geometrically complex implants with high levels of accuracy and precision.The ability to design and fabricate patient-specific,customized structural bioma-terials has made AM a subject of great interest in both research and clinical settings.Among different AM methods,laser powder bed fusion (L-PBF) is emerging as the most popular and reliable AM method for producing load-bearing biomaterials.This layer-by-layer process uses a high-energy laser beam to sinter or melt powders into a part patterned by a computer-aided design (CAD) model.The most impor-tant load-bearing applications of L-PBF-manufactured biomaterials include orthopedic,traumatological,craniofacial,maxillofacial,and dental applications.The unequalled design freedom of AM technology,and L-PBF in particular,also allows fabrication of complex and customized metallic and polymeric scaffolds by altering the topology and controlling the macro-porosity of the implant.This article gives an overview of the L-PBF method for the fabrication of load-bearing metallic and polymeric biomaterials.