Titanium Surface Chemical Composition Interferes in the Pseudomonas aeruginosa Biofilm Formation |
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| Authors: | Antonio Nunes Filho Michelle de Medeiros Aires Danilo Cavalcante Braz Ruth Hinrichs Alexandre José Macedo Clodomiro Alves Jr |
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| Affiliation: | 1. LABPLASMA‐Laboratório de Processamento de Materiais por Plasma, Centro de Tecnologia, Universidade Federal do Rio Grande do Norte, Natal, Brazil;2. Laboratório de Microanálise, Instituto de Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;3. Departamento de Geologia, Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;4. Centro de Biotecnologia e Faculdade de Farmácia, Laboratório de Biofilmes e Diversidade Microbiana, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil;5. Centro Integrado de Inova??o Tecnológica do Semiárido, Universidade Federal do Semi‐árido, Mossoró, Brazil |
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| Abstract: | 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. |
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| Keywords: | Titanium — Nitride — Carbonitride — Bacterial adhesion — Pseudomonas aeruginosa — Plasma treatment |
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