Development of 3D Printed pNIPAM-Chitosan Scaffolds for Dentoalveolar Tissue Engineering

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Polymer Chemistry

Background:

• Dentoalveolar complications necessitate advanced tissue engineering solutions.
• Scaffold biomaterials with tailored properties are crucial for successful regeneration.
• Development of novel materials for 3D printing scaffolds is an active research area.

Purpose of the Study:

• To develop and characterize a novel copolymer of poly(N-isopropylacrylamide) (pNIPAM) and chitosan.
• To evaluate the 3D printability of the synthesized copolymer for scaffold fabrication.
• To assess the degradation, swelling, and biocompatibility of the developed scaffolds for dentoalveolar regeneration.

Main Methods:

• Copolymer synthesis and characterization using Fourier transform infrared spectroscopy.
• 3D printing of scaffolds and evaluation of printability.
• Gravimetric analysis for degradation and swelling studies.
• Scanning electron microscopy for surface morphology assessment.
• Live/dead assay and DNA quantification for cell viability studies.

Main Results:

• Successful synthesis of the pNIPAM-chitosan copolymer was confirmed.
• Three distinct formulations were successfully 3D printed into scaffolds.
• Scaffolds exhibited up to 35% degradation within 7 days and approximately 1200% swelling.
• Initial cell viability studies demonstrated the biocompatibility of the scaffolds.

Conclusions:

• The developed pNIPAM-chitosan hydrogel is a promising candidate for 3D printed scaffold fabrication.
• These scaffolds show potential for applications in dentoalveolar tissue engineering.
• Further research is warranted to fully realize the regenerative capabilities of these materials.