Design considerations and biomaterials selection in embedded extrusion 3D bioprinting

Document Type

Article

Publication Date

7-15-2024

Abstract

In embedded extrusion 3D bioprinting, a temporary matrix preserves a paste-like filament ejecting from a narrow nozzle. For granular sacrificial matrices, the methodology is known as the freeform reversible embedding of suspended hydrogels (FRESH). Embedded extrusion 3D bioprinting methods result in more rapid and controlled manufacturing of cell-laden tissue constructs, particularly vascular and multi-component structures. This report focuses on the working principles and bioink design criteria for implementing conventional embedded extrusion and FRESH 3D bioprinting strategies. We also present a set of experimental data as a guideline for selecting the support bath or matrix. We discuss the advantages of embedded extrusion methods over conventional biomanufacturing methods. This work provides a short recipe for selecting inks and printing parameters for desired shapes in embedded extrusion and FRESH 3D bioprinting methods.

Identifier

85199540126 (Scopus)

Publication Title

Biomaterials Science

External Full Text Location

https://doi.org/10.1039/d4bm00550c

e-ISSN

20474849

ISSN

20474830

PubMed ID

39045682

First Page

4506

Last Page

4518

Issue

18

Volume

12

Grant

2243506

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