Resumo
Objetivo. Explorar o efeito das características da superfície no volume total e viabilidade do biofilme formado em PEEK e pilares
de cicatrização de titânio.
Métodos. Parâmetros de rugosidade (Sa e Sk) e energia de superfície de PEEK e pilares de titânio (n = 3) foram determinados
por microscopia confocal de varredura a laser (CLSM) e ângulo de contato, respectivamente. O volume total e a viabilidade de
um biofilme bacteriano multiespécie cultivado por 30 dias foram então determinados usando CLSM e o reagente LIVE/DEAD
Kit BacLight. O tamanho do efeito foi determinado usando o d de Cohen.
Resultados. Os pilares de PEEK mostraram maior rugosidade do que os de titânio (Sa 0,41 μm vs 0,17 μm), mas não foram observadas diferenças na energia de superfície. Embora o volume total de biofilme tenha sido maior no titânio do que no PEEK (696 μm3 vs 419 μm3), não houve diferenças na proporção de bactérias vivas entre os dois materiais.
Conclusões. A viabilidade do biofilme bacteriano formado não está diretamente relacionada às características da superfície dos pilares de cicatrização de PEEK e titânio.
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