The Application of Three-Dimensional-Printed Hydrogels in Bone Tissue Engineering.

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Biotechnology

Background:

• Bone defects pose significant clinical challenges.
• Hydrogels are suitable for bone tissue engineering (BTE) due to biocompatibility and degradability.
• Submicron/nanoporous hydrogel structures can impede osteoblast survival and bone regeneration.

Purpose of the Study:

• To systematically review the latest applications of 3D-printed hydrogels in bone tissue engineering.
• To discuss the advantages and limitations of 3D-printed hydrogels for BTE.
• To explore future research directions in this field.

Main Methods:

• Systematic literature review of 3D-printed hydrogels in bone tissue engineering.
• Analysis of hydrogel properties, printing techniques, and biological outcomes.
• Discussion of current challenges and future prospects.

Main Results:

• 3D printing enables the fabrication of complex and personalized hydrogel scaffolds for BTE.
• 3D-printed hydrogels provide a versatile platform for enhancing osteoblast survival and bone regeneration.
• Recent advancements show significant potential for treating large bone defects.

Conclusions:

• 3D-printed hydrogels represent a next-generation technology for bone defect treatment.
• Further research is needed to optimize hydrogel design and printing strategies for clinical translation.
• This review provides a foundation for future hydrogel development in bone tissue engineering.