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Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
Initial in vitro bacterial adhesion on dental restorative materials
Ha-Young Kim1, In-Sung Yeo, Jai-Bong Lee
1Department of Prosthodontics, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea.
The International Journal of Artificial Organs
|October 16, 2012
Summary
Gold alloy shows higher initial bacterial adhesion than zirconia, alumina-toughened zirconia, and titanium. These findings suggest zirconia, alumina-toughened zirconia, and titanium are more suitable for restorative abutment materials to prevent peri-implantitis.
Area of Science:
- Biomaterials Science
- Dental Materials
- Microbiology
Background:
- Initial bacterial adhesion to restorative materials influences the development of peri-implantitis.
- Understanding bacterial adhesion on different dental materials is crucial for selecting appropriate abutment materials.
Purpose of the Study:
- To compare initial bacterial adhesion on polished zirconia, alumina-toughened zirconia, type III gold alloy, and cp-titanium.
- To evaluate the influence of surface properties on bacterial adhesion.
Main Methods:
- Sixty cylindrical specimens of four restorative materials were prepared and polished to a mirror finish.
- Surface roughness, topography, and surface free energy were analyzed.
- Adhesion of Streptococcus species was quantified after 4-hour incubation using crystal violet staining and resazurin reduction assays.
Main Results:
- All tested materials exhibited surface roughness (Ra) below 5 nm.
- Surface free energy increased in the order: alumina-toughened zirconia < zirconia < cp-titanium < gold alloy.
- Gold alloy demonstrated significantly higher bacterial adhesion for all tested strains compared to the other materials.
Conclusions:
- Zirconia, alumina-toughened zirconia, and titanium show lower initial bacterial adhesion than gold alloy.
- These findings indicate that zirconia, alumina-toughened zirconia, and titanium may be superior choices for abutment materials to mitigate peri-implantitis progression.
