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Related Experiment Videos

Plaque formation on surface modified dental implants. An in vitro study.

B Grössner-Schreiber1, M Griepentrog, I Haustein

  • 1School of Dental Medicine, Clinic for Restorative Dentistry and Periodontology, University of Kiel, Arnold-Heller-Strasse 16, D-24105 Kiel, Germany. groessner-schreiber@konspar.uni-kiel.de

Clinical Oral Implants Research
|December 12, 2001
PubMed
Summary

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Dental implant surface coatings significantly impact bacterial adhesion. Titanium nitride (TiN) and zirconium nitride (ZrN) coatings reduced bacterial adherence, potentially improving healing outcomes for dental implants.

Area of Science:

  • Biomaterials Science
  • Microbiology
  • Dental Implantology

Background:

  • Bacterial adhesion to titanium implant surfaces critically affects dental implant healing and longevity.
  • Surface properties like roughness and chemical composition influence plaque formation on implants.

Purpose of the Study:

  • To assess the impact of two physical hard coatings on bacterial adhesion.
  • To compare coated surfaces with control titanium surfaces of similar roughness.

Main Methods:

  • Titanium discs underwent surface modifications: physical vapor deposition (PVD) with TiN or ZrN, thermal oxidation, and laser structuring.
  • Bacterial adhesion of Streptococcus mutans and Streptococcus sanguis was quantified using fluorescence microscopy.
  • Surface topography and roughness (Ra) were analyzed via SEM and profilometry; surface energy was assessed by contact angle measurements.

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Main Results:

  • No significant differences in contact angle measurements were observed across modified surfaces.
  • Surface roughness (Ra) ranged from 0.14 to 1.00 micrometers.
  • TiN, ZrN, and thermally oxidized titanium surfaces showed significantly reduced bacterial adherence compared to polished titanium controls.

Conclusions:

  • Physical modification of titanium implant surfaces, specifically TiN and ZrN coatings, can decrease bacterial adherence.
  • These surface modifications hold potential for enhancing clinical outcomes in dental implantology.