TY - JOUR
T1 - Antimicrobial activity of a 3D-printed polymethylmethacrylate dental resin enhanced with graphene
AU - Salgado, Helena
AU - Gomes, Ana T. P. C.
AU - Duarte, Ana S.
AU - Ferreira, José M. F.
AU - Fernandes, Carlos
AU - Figueiral, Maria Helena
AU - Mesquita, Pedro
N1 - Funding Information:
This work was developed within the scope of the projects of the CIIS-UCP, Viseu and FCT Ref. UIDB/04279/2020 as well as within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, and it was financed by national funds through the FCT/MCTES (PIDDAC). Thanks are also due to FCT and UCP for the CEEC institutional financing of Ana T.P.C. Gomes (CEECINST/00137/2018/CP1520/CT0022) and Ana Sofia Duarte (CEECINST/00137/2018/CP1520/CT0013). Carlos Fernandes is grateful for the funding through LAETA, Portugal, in the framework of project UID/50022/2020.
Publisher Copyright:
© 2022 by the authors.
PY - 2022/10/17
Y1 - 2022/10/17
N2 - 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.
AB - 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.
KW - 3D printing
KW - Candida albicans
KW - Streptococcus mutans
KW - Denture stomatitis
KW - Graphene
KW - Polymethyl methacrylate
UR - http://www.scopus.com/inward/record.url?scp=85140651761&partnerID=8YFLogxK
U2 - 10.3390/biomedicines10102607
DO - 10.3390/biomedicines10102607
M3 - Article
C2 - 36289869
VL - 10
JO - Biomedicines
JF - Biomedicines
SN - 2227-9059
IS - 10
M1 - 2607
ER -