Resumo
Objetivo: Avaliar os efeitos de um gel higienizador à base de Cymbopogon citratus a 1% sobre a microdureza e microrugosidade de resina acrílica após escovação simulada por 5 anos. Métodos: Estudo in vitro com 30 espécimes de resina acrílica termopolimerizável, divididos em três grupos (n=10): água destilada (AD), dentifrício comercial Even® (DC) e gel com C. citratus 1% (GC). As análises foram realizadas antes e após simulações de escovação equivalentes a 12, 36 e 60 meses de uso clínico. Avaliaram-se microdureza e rugosidade superficial. Resultados: O grupo GC não apresentou alterações estatisticamente significativas na microdureza ao longo do tempo (p=0,241), diferentemente dos grupos controle. A rugosidade também se manteve estável no grupo GC, ao contrário dos demais. Conclusão: O gel à base de Cymbopogon citratus a 1% demonstrou ser uma alternativa segura para higienização de próteses, preservando as propriedades físico-mecânicas da resina acrílica. Sua ação não abrasiva o torna promissor para uso em pacientes com limitações motoras, contribuindo para o controle do biofilme sem comprometer a integridade da prótese. ental à base de Cymbopogon citratus (capim-limão) a 1% mostra-se alternativa segura para a higienização da superfície protética, no que tange à dureza e rugosidade.
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