Date of Publication :5th July 2025

Abstract: Additive manufacturing has led to the emergence of hydrogel inclusion in 3D printing using extrusion techniques as a step toward manufacturing and expansion of new areas for environmental applications, biomedical use or tissue engineering. This study examines recent advances in the printing methodologies for hydrogel formulations and their multiple uses in extrusion-based 3D printing. We review the developments in terms of print quality, functionalization, material improvements, cross-linking mechanisms and system compatibility. We also discuss medical applications such as drug delivery systems and tissue scaffoldings as well as ecological implications like water purification and use of biodegradable materials associated with hydrogel-based 3D printing. This Research paper aims to provides an insight into modern innovations on hydrogels based on extrusion techniques for 3D Printing.

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