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Microbial adherence to a nonprecious alloy after plasma nitriding process.
Mehmet Sonugelen1, Uhmut Iyiyapici Destan, Fatma Yurt Lambrecht
1Department of Prosthodontics, School of Dentistry, Ege University, Izmir, Turkey. Mehmet.sonugelen@ege.edu.tr
The International Journal of Prosthodontics
|April 11, 2006
Summary
Plasma nitriding significantly reduces microbial adherence to nonprecious metal alloys, like nickel-chromium. This surface treatment enhances biocompatibility by minimizing bacterial attachment without significant changes based on nitriding time.
Area of Science:
- Biomaterials science
- Surface engineering
- Microbiology
Background:
- Nonprecious metal alloys are widely used in various applications, including dental and medical implants.
- Microbial adherence to implant surfaces can lead to biofilm formation and subsequent infections.
- Modifying alloy surfaces to reduce microbial adhesion is crucial for improving device longevity and patient outcomes.
Purpose of the Study:
- To evaluate the effect of plasma nitriding on microbial adherence to a nickel-chromium nonprecious metal alloy.
- To determine if plasma nitriding can alter surface properties to inhibit microbial colonization.
Main Methods:
- Nickel-chromium alloy disks were subjected to plasma nitriding.
- Microorganisms were labeled with technetium-99m for quantification.
- The treated metal disks were exposed to the labeled microorganisms to assess adherence.
Main Results:
- Plasma nitriding significantly decreased the adherence of microorganisms to the alloy surfaces (P < .05).
- No significant differences in microbial adherence were observed based on varying plasma nitriding times (P > .05).
Conclusions:
- Plasma nitriding is an effective surface modification technique for nonprecious metal alloys.
- This process can alter surface properties to substantially reduce microbial adherence, potentially preventing implant-associated infections.