Bioprinting of Multimaterials with Computer-aided Design/Computer-aided Manufacturing

Area of Science:

• Biotechnology
• Materials Science
• Tissue Engineering

Background:

• Hydrogel-based bioprinting faces limitations in achieving structural integrity for complex constructs.
• Multimaterials deposition offers a solution by enabling build/support strategies.

Purpose of the Study:

• To explore the advantages of multimaterials deposition in bioprinting.
• To improve the structural integrity of three-dimensional bioprinted constructs.
• To introduce a file segmentation and preparation technique for freeform bioprinting.

Main Methods:

• Utilizing a build/support configuration with rapid cross-linking hydrogels.
• Employing chemical cross-linking for enhanced construct stability post-printing.
• Developing and applying a file segmentation and preparation technique.

Main Results:

• Demonstrated improved structural integrity of bioprinted constructs through multimaterials deposition.
• Successfully bioprinted stable constructs using a combination of rapid cross-linking hydrogels.
• Validated the effectiveness of the proposed file preparation technique for freeform structures.

Conclusions:

• Multimaterials deposition is a key advancement in bioprinting, overcoming hydrogel limitations.
• The build/support strategy with rapid cross-linking hydrogels enhances construct stability.
• The novel file preparation technique facilitates the bioprinting of intricate, freeform structures.