Evolution of Bioinks and Additive Manufacturing Technologies for 3D Bioprinting

Area of Science:

• Biomedical Engineering
• Regenerative Medicine
• Additive Manufacturing (AM)

Background:

• Additive Manufacturing (AM), commonly known as 3D printing, represents a significant disruption in traditional manufacturing.
• Its capability to create complex geometries previously unachievable marks a potential industrial revolution.
• Key applications are emerging in biomedical engineering and translational medicine for customized medical devices and tissue scaffolds.

Purpose of the Study:

• To review the evolution and concepts of bio-"inks" and bioprinted devices and tissues over the past two decades.
• To examine various additive manufacturing methods used in 3D bioprinting of cells and scaffolds.
• To analyze the benefits and practical considerations of different AM techniques for bioprinting.

Main Methods:

• Comprehensive review of literature on 3D bioprinting techniques and applications.
• Analysis of different additive manufacturing processes relevant to tissue engineering.
• Discussion of bio-ink formulations and their role in 3D bioprinting.

Main Results:

• Additive Manufacturing (AM) enables on-demand fabrication of patient-specific living tissues and complex medical device geometries.
• Various AM methods have been successfully applied to 3D bioprinting of cells and scaffolds, showing rapid progress.
• The field has seen significant evolution in bio-ink development and bioprinting technologies over the last 20 years.

Conclusions:

• 3D bioprinting holds immense promise for on-demand production of patient-specific tissues, advancing regenerative medicine.
• Continued rapid progress in AM techniques is crucial for overcoming current bottlenecks in the bioprinting industry.
• Future research should focus on addressing limitations to fully realize the potential of 3D bioprinting in clinical applications.