自愈水凝胶
快速成型
组织工程
材料科学
纳米技术
3D打印
封装(网络)
计算机科学
生物医学工程
工程类
复合材料
计算机网络
高分子化学
作者
Thomas Billiet,Mieke Vandenhaute,Jorg Schelfhout,Sandra Van Vlierberghe,Peter Dubruel
出处
期刊:Biomaterials
[Elsevier]
日期:2012-09-01
卷期号:33 (26): 6020-6041
被引量:1083
标识
DOI:10.1016/j.biomaterials.2012.04.050
摘要
The combined potential of hydrogels and rapid prototyping technologies has been an exciting route in developing tissue engineering scaffolds for the past decade. Hydrogels represent to be an interesting starting material for soft, and lately also for hard tissue regeneration. Their application enables the encapsulation of cells and therefore an increase of the seeding efficiency of the fabricated structures. Rapid prototyping techniques on the other hand, have become an elegant tool for the production of scaffolds with the purpose of cell seeding and/or cell encapsulation. By means of rapid prototyping, one can design a fully interconnected 3-dimensional structure with pre-determined dimensions and porosity. Despite this benefit, some of the rapid prototyping techniques are not or less suitable for the generation of hydrogel scaffolds. In this review, we therefore give an overview on the different rapid prototyping techniques suitable for the processing of hydrogel materials. A primary distinction will be made between (i) laser-based, (ii) nozzle-based, and (iii) printer-based systems. Special attention will be addressed to current trends and limitations regarding the respective techniques. Each of these techniques will be further discussed in terms of the different hydrogel materials used so far. One major drawback when working with hydrogels is the lack of mechanical strength. Therefore, maintaining and improving the mechanical integrity of the processed scaffolds has become a key issue regarding 3-dimensional hydrogel structures. This limitation can either be overcome during or after processing the scaffolds, depending on the applied technology and materials.
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