Antimicrobial activity of a 3D-printed polymethylmethacrylate dental resin enhanced with graphene

Helena Salgado*, Ana T. P. C. Gomes*, Ana S. Duarte, José M. F. Ferreira, Carlos Fernandes, Maria Helena Figueiral, Pedro Mesquita

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

6 Transferências (Pure)

Resumo

The present study aimed to test, in vitro, the antimicrobial activity against Candida albicans and Streptococcus mutans and the surface roughness of a 3D-printed polymethylmethacrylate dental resin enhanced with graphene. A 3D-printed polymethylmethacrylate dental resin was reinforced with four different concentrations of graphene: 0.01, 0.1, 0.25 and 0.5 wt%. Neat resin was used as a control. The specimens were printed in a liquid crystal display printer. Disc specimens were used in antimicrobial evaluation, and bar-shaped specimens were used to measure surface roughness. The study of antimicrobial activity included the inhibition of the growth of C. albicans and S. mutans and their adhesion to the resin’s surface. Surface roughness increased with the increase in the graphene concentration. The growth inhibition of C. albicans was observed in the different concentrations of graphene after 24 h, with no recovery after 48 h. The specimens doped with graphene were capable of inactivating S. mutans after 48 h. The surface-adhesion studies showed that the density of microbial biofilms decreases in the case of specimens doped with graphene. Graphene, despite increasing the resin’s surface roughness, was effective in inhibiting the growth and the adhesion to the resin’s surface of the main inducers of prosthetic stomatitis.
Idioma originalEnglish
Número do artigo2607
Número de páginas12
RevistaBiomedicines
Volume10
Número de emissão10
DOIs
Estado da publicaçãoPublicado - 17 out 2022

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