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Simvastatin-Loaded Chitosan Microspheres as a Biomaterial for Dentin Tissue Engineering
Erika Soares Bronze-Uhle1, Camila Correa da Silva Braga de Melo1, Isabela Sanches Pompeo da Silva1
1Department of Operative Dentistry, Endodontics, and Dental Materials, Bauru School of Dentistry, University of São Paulo-USP, Bauru, Brazil.
Summary
Chitosan microspheres loaded with simvastatin show promise for dentin tissue engineering. These biomaterials support human dental pulp cell proliferation and enhance mineralized matrix deposition, especially at higher simvastatin concentrations.
Area of Science:
- Biomaterials Science
- Tissue Engineering
- Regenerative Medicine
Background:
- Dentin tissue engineering requires advanced biomaterials to promote cell growth and matrix formation.
- Chitosan microspheres offer a versatile scaffold for drug delivery and tissue regeneration.
- Simvastatin is a known agent that can stimulate bone formation.
Purpose of the Study:
- To synthesize and characterize simvastatin-loaded chitosan microspheres (MSCH) for dentin regeneration.
- To evaluate the in vitro efficacy of MSCH on human dental pulp cells (HDPCs).
- To determine the optimal simvastatin concentration for enhanced dentin matrix deposition.
Main Methods:
- Chitosan microspheres loaded with 2%, 5%, and 10% simvastatin were prepared using emulsion crosslinking.
- Physicochemical and morphological characterization included SEM, FTIR, and UV-visible spectroscopy.
- In vitro assessment involved culturing HDPCs on MSCH, evaluating cell viability, proliferation, and mineralized matrix deposition.
Main Results:
- Synthesized MSCH exhibited spherical morphology with successful simvastatin incorporation.
- UV-visible analysis confirmed a controlled and continuous release of simvastatin.
- MSCH demonstrated no cytotoxicity to HDPCs, supporting significant cell proliferation.
- Simvastatin-loaded MSCH, particularly at 5% and 10%, significantly enhanced mineralized matrix deposition compared to plain MSCH.
Conclusions:
- Simvastatin-loaded chitosan microspheres represent a viable controlled-release system for dentin tissue engineering.
- The 5%-10% simvastatin concentrations are effective in promoting mineralization in HDPC cultures.
- These findings suggest potential for MSCH as bioactive scaffolds in regenerative dentistry.
