DESINFECÇÃO POR MICRO-ONDAS DE RESINAS ACRÍLICAS PARA APLICAÇÕES EXPERIMENTAIS EM LABORATÓRIO
DOI:
https://doi.org/10.47820/recima21.v3i4.1389Keywords:
acrylic resins, microwave, disinfection, biofilmAbstract
A desinfecção de amostras de resina acrílica pode ser alcançada através de irradiação de micro-ondas. No entanto, configurações inadequadas podem levar a distorções físicas ou prejudicar o processo de descontaminação. Este estudo tem como objetivo propor um regime de desinfecção por micro-ondas rápido e confiável para amostras de resina acrílica, em conformidade com as normas de esterilidade certificadas, para aplicações experimentais em laboratório. Os espécimes foram submetidos à formação de biofilme monoespecífico de Staphylococcus aureus, Escherichia coli e Candida albicans. O meio fluido tioglicolato foi utilizado para o teste qualitativo de desinfecção durante 14 dias de incubação a 35°C. A rugosidade da superfície, microdureza Knoop, resistência à flexão e estabilidade dimensional também foram avaliadas. Os protocolos de irradiação foram de 3 ou 5 min a 450 W ou 650 W em 250 mL de água destilada. As análises estatísticas foram realizadas considerando α=0,05. Todos os regimes de irradiação foram capazes de desinfetar os espécimes expostos a C. albicans. Apenas o regime de 450 W por 3 min não atingiu a desinfecção das amostras expostas a S. aureus e E. coli. A rugosidade da superfície, estabilidade dimensional e resistência à flexão não foram alteradas por nenhum regime (p>0,05). A microdureza diminuiu em todos os regimes, exceto 450 W por 3 min. A irradiação com 450 W por 5 min em 250 mL de água é um procedimento de desinfecção ideal para amostras de resina acrílica, pois combina potência e tempo de exposição ideais.
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