Related Experiment Video
Updated: Oct 7, 2025
12:19
Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
Published on: July 1, 2013
11.0K
Titanium-Based Alloy Surface Modification with TiO2 and Poly(sodium 4-styrenesulfonate) Multilayers for Dental
Igor L Kitagawa1,2, Celina M Miyazaki3, Letícia Pitol-Palin4
1School of Sciences, Department of Physics, UNESP São Paulo State University, Bauru, São Paulo 17033-360, Brazil.
ACS Applied Bio Materials
|January 11, 2022
Summary
Titanium (Ti) alloy implants were surface-modified using a layer-by-layer (LbL) technique with poly(sodium 4-styrenesulfonate) (PSS) and titanium dioxide (TiO2) nanoparticles. This modification enhanced osteoblast activity, improving potential for dental and bone implants.
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Orthopedic Engineering
Background:
- Titanium (Ti) and its alloys are crucial for dental and orthopedic implants due to their biocompatibility.
- Optimizing osseointegration and biocompatibility of Ti-based implants remains a key research focus.
- Surface modification techniques are vital for enhancing implant performance.
Purpose of the Study:
- To modify Ti-based alloy surfaces using a layer-by-layer (LbL) technique with poly(sodium 4-styrenesulfonate) (PSS) and titanium dioxide (TiO2) nanoparticles.
- To characterize the PSS/TiO2 films and their impact on Ti-based alloy surfaces.
- To evaluate the in vivo effects of the modified surfaces on osteoblast activity and osseointegration.
Main Methods:
- Layer-by-layer (LbL) self-assembly of PSS/TiO2 multilayers on Ti-based alloys.
- Surface characterization using ultraviolet-visible spectroscopy, Fourier-transform infrared spectroscopy, atomic force microscopy, scanning electron microscopy, and micro-Raman spectroscopy.
- In vivo evaluation using immunolabeling and biomechanical analysis of screw implants in rats.
Main Results:
- Successful fabrication and characterization of PSS/TiO2 multilayers on Ti-based alloy surfaces.
- LbL modification altered the topography and chemical properties of the Ti-based alloy surface.
- In vivo tests indicated enhanced osteoblast activity and beneficial effects on osseointegration.
Conclusions:
- The LbL PSS/TiO2 coating is a simple, versatile, and potentially low-cost method for modifying Ti-based alloy implant surfaces.
- This surface modification strategy shows promise for improving the biological performance of dental and bone implants.
- The enhanced osteoblast activity suggests improved osseointegration potential.
