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Osteoblastic Differentiation on Graphene Oxide-Functionalized Titanium Surfaces: An In Vitro Study.

Roberta Di Carlo1, Antonello Di Crescenzo2, Serena Pilato2

  • 1Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti-Pescara, via dei Vestini 31, 66100 Chieti, Italy.

Nanomaterials (Basel, Switzerland)
|April 5, 2020
PubMed
Summary

Graphene oxide (GO) coating on titanium dental implants enhances Dental Pulp Stem Cell (DPSC) viability and accelerates osteogenic differentiation, improving implant integration.

Keywords:
dental pulp stem cellsgraphene oxideosteoblastic differentiationsurface functionalizationtitanium disc

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Area of Science:

  • Biomaterials Science
  • Tissue Engineering
  • Dental Implantology

Background:

  • Titanium implant surfaces are modified to enhance biocompatibility and osteointegration.
  • Graphene oxide (GO) shows promise in improving biomaterial performance for tissue integration.

Purpose of the Study:

  • To evaluate Dental Pulp Stem Cells (DPSCs) viability, cytotoxicity, and osteogenic differentiation on GO-coated titanium surfaces.
  • To assess the potential of GO-functionalized titanium as a biomaterial for dental implants.

Main Methods:

  • Machined and sandblasted/acid-etched titanium discs were covalently functionalized with GO.
  • DPSC proliferation, differentiation, and cytotoxicity were assessed on GO-coated and control titanium substrates.

Main Results:

  • GO coating was homogeneous on titanium surfaces without altering roughness.
  • GO-functionalized surfaces supported DPSC viability, showed no cytotoxicity, and promoted extracellular matrix deposition.
  • Significant early-stage proliferation and osteogenic differentiation of DPSCs were observed on GO-functionalized test samples.

Conclusions:

  • GO-functionalization creates a non-cytotoxic biomaterial that stimulates cell viability.
  • This method enhances and accelerates osteogenic differentiation compared to plain titanium.
  • The GO-functionalization protocol offers potential for novel dental implant materials with improved host tissue integration.