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Published on: August 5, 2021
Electrochemical surface modification of titanium in dentistry
Kyo-Han Kim1, Narayanan Ramaswamy
1Department of Dental Biomaterials, School of Dentistry, Kyungpook National University, Daegu, Korea. kyohan@mail.knu.ac.kr
Dental Materials Journal
|March 14, 2009
Summary
Electrochemical surface modification techniques, including anodic oxidation and cathodic deposition, enhance titanium implant properties. These methods offer cost-effective ways to improve titanium
Area of Science:
- Biomaterials Science
- Surface Engineering
- Electrochemistry
Background:
- Titanium and its alloys are vital for implants due to biocompatibility.
- Clinical demands necessitate advanced surface treatments for titanium.
- Electrochemical methods offer simple, cost-effective titanium surface modification.
Purpose of the Study:
- To review electrochemical techniques for titanium surface modification.
- To highlight the advantages of anodic oxidation and cathodic deposition for implant applications.
- To discuss the potential of nano-grained hydroxyapatite coatings.
Main Methods:
- Anodic oxidation: modifies titanium oxide layer for desired roughness, porosity, and composition.
- Electrophoretic deposition: applies hydroxyapatite coatings using charged particles in a solvent.
- Cathodic deposition: forms hydroxyapatite in situ from electrolyte ions.
Main Results:
- Anodic oxidation at high voltages enhances oxide crystallinity and allows doping.
- Electrophoretic deposition requires post-sintering treatment for optimal coating properties.
- Cathodic deposition enables control over hydroxyapatite structure and chemistry, producing nano-grained coatings.
Conclusions:
- Electrochemical techniques provide versatile and economical approaches to titanium surface enhancement.
- Doping during anodic oxidation and nano-structuring in cathodic deposition significantly improve implant material properties.
- Further development in cathodic deposition aims to leverage nano-grained hydroxyapatite for enhanced biological activity in implants.
