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Updated: Oct 3, 2025
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Biological Compatibility Profile on Biomaterials for Bone Regeneration
Published on: November 16, 2018
12.8K
Mapping Bone Marrow Cell Response from Senile Female Rats on Ca-P-Doped Titanium Coating.
Leonardo P Faverani1, William P P Silva1, Cecília Alves de Sousa2
1Department of Diagnosis and Surgery, Division of Oral and Maxillofacial Surgery and Implantology, School of Dentistry, São Paulo State University-UNESP, Araçatuba 16015-050, Brazil.
Materials (Basel, Switzerland)
|February 15, 2022
Summary
Dental implant surface modifications, including plasma electrolytic oxidation (PEO) and sandblasting/acid-etching (SLA), enhance mesenchymal stem cell (MSC) response and bone formation. These improved surfaces show promise for future clinical applications in osseointegration.
Area of Science:
- Biomaterials Science
- Regenerative Medicine
- Dental Implantology
Background:
- Dental implant success relies on osseointegration, influenced by surface characteristics.
- Surface modifications aim to enhance bone-implant contact and cellular response.
- Mesenchymal stem cells (MSCs) are crucial for bone regeneration and osseointegration.
Purpose of the Study:
- To evaluate the cellular response of rat-derived MSCs on different dental implant surface modifications.
- To compare the effects of plasma electrolytic oxidation (PEO) and sandblasting/acid-etching (SLA) versus a machined surface (MSU) on MSCs.
- To assess cell viability, proliferation, osteoblastic gene expression, and mineralized matrix formation.
Main Methods:
- Ti-6Al-4V discs with PEO, SLA, and MSU surfaces were prepared (n=34 per group).
- Surface chemistry was analyzed using energy-dispersive spectroscopy (EDS).
- MSC viability, proliferation, osteoblastic marker gene expression (OSX, ALP, BSP, OPN), and mineralized matrix formation were quantified.
Main Results:
- PEO surfaces demonstrated significantly higher cell viability and growth compared to MSU surfaces (p=0.001).
- Both PEO and SLA surfaces promoted increased cell proliferation over 10 days (p<0.05).
- PEO surfaces exhibited superior mineralized bone matrix formation (p=0.003), with significant differences in osteoblastic gene expression among all groups (p=0.001).
Conclusions:
- Mesenchymal stem cells from senile rats show comparable and favorable cellular responses on both SLA and PEO modified surfaces.
- PEO and SLA surface modifications significantly enhance MSC behavior, including proliferation and osteogenic differentiation, compared to machined surfaces.
- These findings suggest that PEO and SLA surfaces are promising candidates for future clinical investigations to improve dental implant osseointegration.
