Bacterial adhesion efficiency on implant abutments: A comparative study

Autors/ores

  • Marina Etxeberria Laboratory of Molecular Microbiology and Antimicrobials. Department of Pathology and Experimental Therapeutics, University of Barcelona, Barcelona.
  • Lidia López-Jiménez Laboratory of Molecular Microbiology and Antimicrobials. Department of Pathology and Experimental Therapeutics, University of Barcelona, Barcelona
  • Alexandra Merlos Laboratory of Molecular Microbiology and Antimicrobials. Department of Pathology and Experimental Therapeutics, University of Barcelona, Barcelona.
  • Tomás Escuín Laboratory of Prosthodontics, Department of Dentistry, Medical and Dentistry Schools, University of Barcelona, IDIBELL, Barcelona, Spain
  • Miguel Viñas 1Laboratory of Molecular Microbiology and Antimicrobials. Department of Pathology and Experimental Therapeutics, University of Barcelona, Barcelona, Spain.

Paraules clau:

implant abutments, glass fiber, bacterial adhesion, nano-roughness, wettability, biomaterials

Resum

The attachment of Escherichia coli ATCC 25922 and Staphylococcus aureus ATCC 28213 onto six different materials used to manufacture dental implant abutments was quantitatively determined after 2 and 24 h of contact between the materials and the bacterial cultures. The materials were topographically characterized and their wettability determined, with both parameters subsequently related to bacterial adhesion. Atomic force microscopy, interferometry, and contact angle measurement were used to characterize the materials’ surfaces. The results showed that neither roughness nor nano-roughness greatly influenced bacterial attachment whereas wettability strongly correlated with adhesion. After 2 h the degree of E. coli attachment markedly differed depending on the material whereas similar differences were not observed for S. aureus, which yielded consistently higher counts of adhered cells. Nevertheless, after 24 h the adhesion of the two species to the different test materials no longer significantly differed, although on all surfaces the numbers of finally adhered E. coli were higher than those of S. aureus. [Int Microbiol 2013; 16(4):235-242]

Keywords: implant abutments · glass fiber · bacterial adhesion · nano-roughness · wettability · biomaterials

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