Oriented Cell Alignment Induced by a Nanostructured Titanium Surface Enhances Expression of Cell Differentiation...

Area of Science:

• Biomaterials Science
• Tissue Engineering
• Dental Implantology

Background:

• Dental implant success relies on effective sealing between implant surfaces and surrounding soft (gum) and hard (bone) tissues.
• Surface nanotopography influences cellular responses via mechanotransduction, impacting tissue integration.
• Developing advanced implant surfaces is crucial for enhancing osseointegration and soft tissue attachment.

Purpose of the Study:

• To engineer nanostructured titanium (Ti) surfaces designed to improve both soft and hard tissue integration for dental implant applications.
• To investigate the effects of different nanostructures, specifically nanopores (NPs) and nanonets (NNs), on cellular behavior and tissue response.
• To evaluate the potential of these nanostructured surfaces for use in dental implant abutments.

Main Methods:

• Titanium surfaces were fabricated using electrochemical anodization to create nanopore (NP) and nanonet (NN) structures.
• Surface characterization involved atomic force microscopy, scanning electron microscopy, and contact angle analysis.
• Cellular responses were assessed using primary human gingival fibroblasts (hGFs) and human bone marrow mesenchymal stem cells (hBM-MSCs), evaluating adhesion, cytotoxicity, metabolic activity, differentiation, and cell orientation.

Main Results:

• Nanopore (NP) surfaces exhibited nanoparticle release, which correlated with increased in vitro apoptosis.
• Nanonet (NN) surfaces successfully induced oriented alignment of both hGFs and hBM-MSCs.
• This oriented cell alignment on NN surfaces led to enhanced expression of cellular differentiation markers.

Conclusions:

• Nanonet (NN) nanostructuring of titanium surfaces demonstrates significant potential for improving soft and hard tissue integration.
• The oriented cell alignment induced by NN surfaces is a key factor in enhanced differentiation marker expression.
• NN-structured Ti surfaces are a promising candidate for dental implant abutments, aiming to optimize tissue integration and implant success.