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Related Experiment Video

Updated: Sep 9, 2025

Plasma Polishing as a New Polishing Option to Reduce the Surface Roughness of Porous Titanium Alloy for 3D Printing
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WATER PLASMA TREATMENT METHOD: SIMULTANEOUS STERILIZATION AND SURFACE MODIFICATION OF TITANIUM-BASED IMPLANTS.

Gustavo L Likes1, Rafael L Novak1, Vitor C Y Franceschini2

  • 1Mechanical Engineering Department, Federal University of Paraná, Curitiba, Brazil.

Materials Research (Sao Carlos, Sao Paulo, Brazil)
|September 2, 2025
PubMed
Summary

A novel low-temperature DC water plasma method effectively sterilizes titanium surfaces, eliminating contaminants and bacteria. This process preserves and enhances the titanium oxide layer, showing promise for clinical applications.

Keywords:
sterilizationsurface treatmenttitaniumwater plasma

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Area of Science:

  • Biomaterials Science
  • Surface Chemistry
  • Sterilization Technologies

Background:

  • Sterilization of medical implants is crucial for preventing infections.
  • Conventional sterilization methods may affect material properties or require high temperatures.
  • Developing effective, low-temperature sterilization techniques for titanium is essential for biomedical applications.

Purpose of the Study:

  • To evaluate the applicability and efficacy of a new DC water plasma method for sterilizing titanium.
  • To assess the impact of water plasma treatment on the surface oxide layer and morphology of titanium.
  • To determine the potential of this method for clinical use.

Main Methods:

  • Titanium samples were treated using a DC water plasma system at 60°C for 10 minutes.
  • Water vapor was generated from distilled water and polarized at -700 V.
  • Elemental analysis was performed to assess surface composition and contamination levels.

Main Results:

  • Complete elimination of organic and inorganic contaminants (0% detected) and bacteria was achieved.
  • The oxygen content on the titanium surface remained stable at approximately 8%.
  • The water plasma treatment did not negatively impact the titanium surface oxide layer or morphology.

Conclusions:

  • The DC water plasma method is effective for low-temperature sterilization of titanium.
  • The process enhances the natural oxide layer, potentially improving titanium bioactivity.
  • This water-based sterilization system shows promise for future clinical applications.