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Titanium Surface Chemical Composition Interferes in the Pseudomonas aeruginosa Biofilm Formation
Author(s) -
Nunes Filho Antonio,
Aires Michelle de Medeiros,
Braz Danilo Cavalcante,
Hinrichs Ruth,
Macedo Alexandre José,
Alves Jr Clodomiro
Publication year - 2018
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1111/aor.12983
Subject(s) - wetting , biofilm , adhesion , nanotopography , contact angle , pseudomonas aeruginosa , surface roughness , titanium , chemistry , materials science , chemical engineering , bacteria , surface finish , nitriding , nanotechnology , composite material , metallurgy , layer (electronics) , biology , genetics , engineering
Bacterial adhesion on three different surfaces: untreated Ti, plasma nitriding, and plasma carbonitriding Ti substrates were investigated. The samples were placed in bacterial cultures of Pseudomonas aeruginosa to assess biofilm formation. The correlation between the amount of bacteria attached to the surface after a lapse of time with nanotopography and physicochemical properties was performed. TiN showed the highest capacity to avoid bacterial adhesion, while presenting intermediate roughness and wettability. Although the surface of TiCN had the highest surface roughness and low contact angle (high wettability), bacterial adhesion was intermediate on this sample. Untreated Ti, even though presenting a smooth surface and low wettability, had the highest tendency to form biofilms.