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Updated: Jul 24, 2026
11:19
Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
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Ceramic conversion treated titanium implant abutments with gold for enhanced antimicrobial activity
Yasser M Aly1, Zhenxue Zhang2, Nesma Ali3
1Faculty of Dentistry, Alexandria University, Alexandria, Egypt; School of Dentistry, Institute of Clinical Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, United Kingdom.
Summary
This study developed a gold-coated titanium surface treatment to combat peri-implantitis. The innovative coating demonstrated strong adhesion and significantly enhanced antimicrobial properties against common bacteria, offering a promising strategy for implant longevity.
Area of Science:
- Biomaterials Science
- Dental Implantology
- Surface Engineering
Background:
- Peri-implantitis, an inflammatory condition, threatens the survival of osseointegrated dental implants through bone loss.
- Developing effective post-placement strategies is crucial for patients at risk of peri-implantitis.
Purpose of the Study:
- To engineer a surface coating for titanium abutments with cellular adhesion and antimicrobial properties.
- To investigate this coating as a post-implant placement strategy to prevent peri-implantitis.
Main Methods:
- Titanium alloy Grade V stubs were coated with gold and underwent ceramic conversion treatment (CCT) at various durations.
- Surface characteristics, chemistry, leaching, coating adhesion (scratch test), and antibacterial efficacy against Staphylococcus aureus and Fusobacterium nucleatum were evaluated.
Main Results:
- Gold-coated titanium discs showed good coating stability in water and after bacterial contact.
- The 3-hour CCT gold-coated titanium exhibited superior adhesion and significantly improved antimicrobial properties against both tested bacterial species compared to untreated titanium.
Conclusions:
- Ceramic conversion treated titanium with a gold pre-layer demonstrates enhanced antimicrobial activity against Staphylococcus aureus and Fusobacterium nucleatum.
- The firmly adherent oxide layer suggests potential clinical efficacy for coating implant abutments to prevent peri-implantitis.
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