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Resorbable engineered barrier membranes for oral surgery applications.
Cristian Balducci1, Annj Zamuner1,2, Martina Todesco2
1Department of Industrial Engineering, University of Padova, Padova, Italy.
Journal of Biomedical Materials Research. Part A
|May 24, 2024
Summary
Modified barrier membranes enhanced with chitosan and a peptide show improved bone regeneration for dental implants. These engineered materials promote osteoblast activity and offer a potential advancement in treating oral bone deficiencies.
Area of Science:
- Biomaterials Engineering
- Tissue Engineering
- Oral and Maxillofacial Surgery
Background:
- Population aging and oral health neglect drive demand for dental implants due to widespread edentulism and alveolar bone resorption.
- Guided Bone Regeneration (GBR) is crucial for alveolar bone reconstruction but faces limitations in regeneration time and bone quality predictability.
- Adequate peri-implant bone volume is essential for successful dental implant prognoses.
Purpose of the Study:
- To engineer and evaluate modified barrier membranes with enhanced bioactivity for improved alveolar bone tissue regeneration.
- To investigate the efficacy of membranes functionalized with chitosan (CS) and chitosan combined with the peptide GBMP1α (CS+GBMP1α).
- To assess the impact of functionalization on osteoblast activity, mineralization, gene expression, and antibacterial properties.
Main Methods:
- OsseoGuard® collagen membranes were modified with CS and CS+GBMP1α using EDC/sulfo-NHS chemistry.
- Functionalization was confirmed using Fourier-transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS).
- Biological assays involved seeding human osteoblasts to evaluate proliferation, mineralization, gene expression (SPP1, Runx2), and antibacterial properties. Mechanical tests assessed biomechanical integrity.
Main Results:
- Both CS and CS+GBMP1α functionalizations significantly enhanced osteoblast proliferation, mineralization, gene expression, and antibacterial activity compared to unmodified membranes.
- The CS+GBMP1α functionalized membranes demonstrated superior performance across all tested biological assays.
- Mechanical testing revealed no significant negative impact on the biomechanical properties of the engineered membranes.
Conclusions:
- Engineered barrier membranes functionalized with CS and CS+GBMP1α show significant potential for Guided Bone Regeneration applications.
- The CS+GBMP1α modification offers enhanced osteoblast activity and promotes effective bone tissue regeneration.
- These advanced membranes represent a promising development for addressing oral cavity bone regeneration challenges and improving dental implant outcomes.
