Multicompartmental Scaffolds for Coordinated Periodontal Tissue Engineering.

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Regenerative Medicine

Background:

• Periodontal repair necessitates coordinated soft and hard tissue responses.
• Tissue engineering scaffolds can mimic native periodontal structures for in vitro regeneration.
• Existing scaffolds often lack the complexity to replicate the native periodontal microenvironment.

Purpose of the Study:

• To design and fabricate advanced 3D multicompartmental scaffolds using melt electrowriting.
• To mimic the native periodontal microenvironment with distinct bone, ligament, and transition regions.
• To evaluate the scaffold's ability to support coordinated cell proliferation and differentiation for periodontal regeneration.

Main Methods:

• Fabrication of highly ordered multicompartmental scaffolds via melt electrowriting.
• Incorporation of three distinct tissue-specific regions: bone, ligament, and a transition zone.
• In vitro 3D coculture of human osteoblasts and periodontal ligament fibroblasts.

Main Results:

• Achieved coordinated proliferation and differentiation of multiple cell types within the scaffold.
• Demonstrated a mineral gradient from calcified to uncalcified regions in long-term cultures.
• Successfully recapitulated PDL-like insertions within the transition region, mimicking native interfacial tissues.

Conclusions:

• The multicompartmental scaffold effectively mimics the native periodontal microenvironment.
• This 3D printing approach supports multitissue engineering for complex periodontal defects.
• The technology offers a foundation for developing patient-specific scaffolds for periodontal regeneration.