Advances in 3D Printed Scaffolds for Periodontal Regeneration

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Periodontology

Background:

• Periodontal regeneration aims to restore lost tissues, including cementum, periodontal ligament, and alveolar bone.
• Traditional methods face limitations in achieving complete and functional regeneration.

Purpose of the Study:

• To review recent advancements in 3D printing for scaffold-guided periodontal regeneration (SGPR).
• To highlight innovations in materials, scaffold design, personalization, and therapeutic delivery.

Main Methods:

• Review of recent literature on 3D printing technologies and materials for SGPR.
• Analysis of composite scaffolds, ECM-mimetic hydrogels, and ion-releasing ceramics.
• Exploration of additive manufacturing techniques like melt electrowriting, extrusion, and inkjet printing.

Main Results:

• Advanced materials and 3D printing enable patient-specific, multiphasic, and anisotropic scaffolds mimicking natural tissue interfaces.
• Controlled release of therapeutic agents (ions, growth factors, genes, antimicrobials) modulates the microenvironment and immunity.
• Emerging techniques include in situ, 4D bioprinting, immuno-instructive constructs, and image-guided personalization.

Conclusions:

• 3D printing significantly advances SGPR towards personalized and functional therapies.
• Challenges remain in vascularization, immune modulation, mechanical properties, manufacturing scalability, and regulatory approval.
• Standardized workflows, advanced printing techniques, machine learning, and clinical studies are crucial for translation.