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[The influence of surface roughness on bacteria adhesion on titanium]
1Department of Microbiology, Beijing Hospital for Stomatology, Capital University of Medical Sciences, Beijing 100050, China.
Summary
For dental implants, a surface roughness (Ra) below 0.45 microns and Rz below 3.39 microns is recommended to minimize bacteria adhesion. This finding helps improve implant success rates.
Area of Science:
- Biomaterials science
- Microbiology
- Dental implantology
Context:
- Dental implant abutments require specific surface properties to prevent bacterial colonization.
- Surface roughness is a critical factor influencing bacterial adhesion on implant surfaces.
Purpose:
- To determine the correlation between surface roughness parameters and the adhesion of Streptococcus mutans and Actinomyces viscosus.
- To establish optimal surface roughness criteria for dental implant abutments to reduce bacterial adhesion.
Summary:
- Surface roughness of four abutments was measured using a Talysurf/6p-120 topographer, yielding Ra, Rz, Rp, Rv, Ry, and Sm values.
- Adhesion experiments were conducted using commercial pure titanium and titanium alloy discs with S. mutans and A. viscosus.
- No statistical difference in bacterial quantity was observed when Ra values were below 0.4528 microns and Rz values were below 3.3882 microns.
Impact:
- Recommends specific surface roughness parameters (Ra < 0.4 micron, Rz < 3.4 microns) for implant abutments to minimize bacterial adhesion.
- Provides crucial data for the design and manufacturing of dental implants with improved biocompatibility.
- Contributes to reducing the risk of peri-implantitis and enhancing long-term implant survival.