Integrating Additive and Traditional Manufacturing for Multiscale Bone Tissue Engineering Scaffolds.

IF 5.2 3区 医学 Q1 ENGINEERING, BIOMEDICAL
Yixuan Zhu, Haotian Gao, Qingchen Qiao, Yafei Yuan, Dongyu Fang, Yuxing Bai, Qingsong Jiang
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Abstract

Additive manufacturing (AM) has emerged as a cutting-edge technology for fabricating biomimetic scaffolds with controllable architectures and compositional diversity, showing great promise in the fields of bone tissue engineering (BTE) and regenerative medicine. However, due to limitations in printing resolution and single-process capabilities, AM alone struggles to replicate the complex multiscale hierarchical structures inherent in native bone. Traditional fabrication techniques provide valuable complementary strategies to address these limitations. This review systematically summarizes recent advances in the construction of heterogeneous scaffolds from a multiscale design perspective, encompassing macro-, meso-, and microscale approaches. Emphasis is placed on the integration of major AM techniques-such as extrusion-based and light-based printing-with conventional methods including freeze-drying, gas foaming, and electrospinning. Particular attention is given to emerging in situ fabrication strategies, such as in situ foaming and mineralization, which enable spatially resolved and functionally graded architectures. Furthermore, this review explores pathways for constructing multiscale-integrated scaffolds and examines the current challenges and opportunities in clinical translation. Collectively, this work provides a comprehensive framework to guide the development of next-generation bone tissue scaffolds with enhanced biological performance and translational potential.

多尺度骨组织工程支架增材制造与传统制造的结合。
增材制造(AM)已成为制造具有可控结构和成分多样性的仿生支架的前沿技术,在骨组织工程(BTE)和再生医学领域显示出巨大的前景。然而,由于打印分辨率和单过程能力的限制,AM独自努力复制天然骨骼固有的复杂的多尺度分层结构。传统的制造技术为解决这些限制提供了有价值的补充策略。本文从多尺度设计的角度系统地总结了异质支架构建的最新进展,包括宏观、中观和微观尺度方法。重点放在主要增材制造技术的整合上,如基于挤压和基于光的印刷,与传统方法包括冷冻干燥,气体发泡和静电纺丝。特别关注新兴的原位制造策略,例如原位发泡和矿化,它们可以实现空间分解和功能分级的结构。此外,本文还探讨了构建多尺度集成支架的途径,并探讨了目前临床转化的挑战和机遇。总的来说,这项工作为指导下一代骨组织支架的开发提供了一个全面的框架,该支架具有更高的生物学性能和转化潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Functional Biomaterials
Journal of Functional Biomaterials Engineering-Biomedical Engineering
CiteScore
4.60
自引率
4.20%
发文量
226
审稿时长
11 weeks
期刊介绍: Journal of Functional Biomaterials (JFB, ISSN 2079-4983) is an international and interdisciplinary scientific journal that publishes regular research papers (articles), reviews and short communications about applications of materials for biomedical use. JFB covers subjects from chemistry, pharmacy, biology, physics over to engineering. The journal focuses on the preparation, performance and use of functional biomaterials in biomedical devices and their behaviour in physiological environments. Our aim is to encourage scientists to publish their results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Several topical special issues will be published. Scope: adhesion, adsorption, biocompatibility, biohybrid materials, bio-inert materials, biomaterials, biomedical devices, biomimetic materials, bone repair, cardiovascular devices, ceramics, composite materials, dental implants, dental materials, drug delivery systems, functional biopolymers, glasses, hyper branched polymers, molecularly imprinted polymers (MIPs), nanomedicine, nanoparticles, nanotechnology, natural materials, self-assembly smart materials, stimuli responsive materials, surface modification, tissue devices, tissue engineering, tissue-derived materials, urological devices.
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