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Lithium-Modified TiO2 Surface by Anodization for Enhanced Protein Adsorption and Cell Adhesion
Huaze Wu1, Takeshi Ueno1, Kosuke Nozaki1
1Department of Advanced Prosthodontics, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku Tokyo, 113-8549, Japan.
ACS Applied Materials & Interfaces
|November 28, 2023
Summary
Lithium anodization enhances titanium
Area of Science:
- Biomaterials Science
- Surface Chemistry
- Orthopedic Implantology
Background:
- Osseointegration is crucial for implant success.
- Lithium (Li) promotes osteoblast activity and biocompatibility.
- Surface modification of titanium can improve implant performance.
Purpose of the Study:
- To immobilize lithium on titanium surfaces using anodization.
- To evaluate the effect of lithium treatment on protein adsorption and osteoblast attachment.
- To determine if surface charge modification enhances biological interactions.
Main Methods:
- Titanium disks were acid-etched and then anodized at different voltages (1, 3, 9 V) in LiCl.
- Surface topography was analyzed using SEM and CLSM.
- Zeta potential, protein adsorption (albumin, laminin, fibronectin), and osteoblast attachment were assessed.
Main Results:
- Anodization did not significantly alter surface topography.
- The 3 V anodization group showed increased zeta potential and enhanced extracellular matrix protein adsorption.
- Osteoblast attachment and vinculin localization increased on the 3 V Li-anodized surface.
Conclusions:
- Anodization is an effective method for immobilizing lithium on titanium.
- Modifying titanium surface charge with lithium enhances protein adsorption and osteoblast adhesion.
- This approach shows promise for improving implant osseointegration.
