Journal
ADVANCED DRUG DELIVERY REVIEWS
Volume 174, Issue -, Pages 369-386Publisher
ELSEVIER
DOI: 10.1016/j.addr.2021.04.020
Keywords
Surface-to-mass ratio; Matrix; Immediate; Enteric; FDM; FFF; SLA; SLS; Semi-solid extrusion; Powder
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3D printing technology has the potential to revolutionize solid dosage form manufacturing, with advantages such as rapid prototyping and the ability to fabricate complex geometries. Different printing technologies and materials can be used to create matrices with varying drug release properties, while methods to manipulate release patterns are critically evaluated.
3D printing is an innovative manufacturing technology with great potential to revolutionise solid dosage forms. Novel features of 3D printing technology confer advantage over conventional solid dosage form manufacturing technologies, including rapid prototyping and an unparalleled capability to fabricate complex geometries with spatially separated conformations. Such a novel technology could transform the pharmaceutical industry, enabling the production of highly personalised dosage forms with welldefined release profiles. In this work, we review the current state of the art of using additive manufacturing for predicting and understanding drug release from 3D printed novel structures. Furthermore, we describe a wide spectrum of 3D printing technologies, materials, procedure, and processing parameters used to fabricate fundamentally different matrices with different drug releases. The different methods to manipulate drug release patterns including the surface area-to-mass ratio, infill pattern, geometry, and composition, are critically evaluated. Moreover, the drug release mechanisms and models that could aid exploiting the release profile are also covered. Finally, this review also covers the design opportunities alongside the technical and regulatory challenges that these rapidly evolving technologies present. (c) 2021 Published by Elsevier B.V.
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