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Pulp regeneration using a peptide nanofiber artificial scaffold on animal models: A preliminary study
Ozlem Marti Akgun1, Ayse Begum Tekinay2, Gulistan Tansık3
1Gulhane Dentistry Faculty, Univesity of Health Sciences, Ankara, Turkey.
Summary
Glycosaminoglycan (GAG) mimetic peptide amphiphile (PA) nanofibers show promise for endodontic tissue regeneration. These GAG-PA nanofibers effectively promoted significant tissue repair in a rat model, supporting their potential in regenerative endodontics.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Endodontics
Background:
- Regenerative endodontic procedures (REPs) require effective biomaterials for pulp tissue repair.
- Standardized protocols for pulp regeneration are currently lacking.
- Glycosaminoglycan (GAG) mimetic peptide amphiphiles (PAs) were synthesized to emulate sulfated GAGs, creating GAG-PA and K-PA nanofibers.
Purpose of the Study:
- To investigate the regenerative potential of GAG-PA nanofibers in regenerative endodontic procedures (REPs).
Main Methods:
- Heparan sulfate mimicking PAs were designed into a bioactive nanofibrous supramolecular system.
- Rat molar pulp cavities were created and treated with GAG-PA nanofibers (study group) or physiological saline (control group).
- Tissue regeneration was evaluated after 30 days using H&E and Masson's trichrome staining.
Main Results:
- Hematoxylin and eosin staining showed robust tissue regeneration with minimal neutrophil infiltration in the GAG-PA group.
- Masson's trichrome staining confirmed reparative dentin formation.
- Quantitative analysis indicated an 85% regeneration in the study group versus 80% in the control group, with no statistically significant difference (p > 0.05).
Conclusions:
- GAG-PA and K-PA nanofibers were successfully synthesized and formed nanofiber networks.
- In vivo experiments demonstrated substantial tissue regeneration, supporting the efficacy of the nanofiber approach in endodontic applications.
- Statistical analysis confirmed consistent regeneration between groups, highlighting the potential of these nanofibers for endodontic tissue regeneration.
