RT Journal Article
T1 Antimicrobial effect of nanostructured membranesfor guided tissue regeneration: an in vitro study
A1 Bueno, Jaime
A1 Sánchez Beltrán, María Del Carmen
A1 Toledano Osorio, M.
A1 Figuero Ruiz, Elena
A1 Toledano, M.
A1 Medina-Castillo, A. L.
A1 Osorio, R.
A1 Herrera González, David
A1 Sanz Alonso, Mariano
AB Objective: The purpose of this in vitro study was to evaluate the antibacterial effect of a novel non-resorbable, bioactive polymeric nanostructured membrane (NMs), when doped with zinc, calcium and doxycycline.Methods: A validated in vitro subgingival biofilm model with six bacterial species (Streptococcus oralis, Actinomyces naeslundii, Veillonela parvula, Fusobacterium nucleatum, Porphyromonas gingivalis and Aggregatibacter actinomycetemcomitans) was used. The experimental NMs, with and without being doped with doxycycline, calcium and zinc, were placed on hydroxyapatite (HA) discs. As positive control membranes, commercially available dense polytetrafluoroethylene (d-PTFE) membranes were used and, as negative controls, the HA discs without any membrane. The experimental, positive and negative control discs were exposed to a mixed bacterial suspension, at 37 °C under anaerobic conditions, during 12, 24, 48 and 72 h. The resulting biofilms were analyzed through scanning electron microscopy (SEM), to study their structure, and by quantitative polymerase chain reaction (qPCR), to assess the bacterial load, expressed as colony forming units (CFU) per mL. Differences between experimental and control groups were evaluated with the general linear model and the Bonferroni adjustment.Results: As shown by SEM, all membrane groups, except the NMs with doxycycline, resulted in structured biofilms from 12-72 hours. Similarly, only the membranes loaded with doxycycline demonstrated a significant reduction in bacterial load during biofilm development, when compared with the control groups (p < 0.001).Significance: Doxycycline-doped nanostructured membranes have an impact on biofilm growth dynamics by significant reducing the bacterial load.
PB Elsevier
SN 0109-5641
YR 2020
FD 2020-12
LK https://hdl.handle.net/20.500.14352/109015
UL https://hdl.handle.net/20.500.14352/109015
LA eng
NO Bueno J, Sánchez MC, Toledano-Osorio M, Figuero E, Toledano M, Medina-Castillo AL, Osorio R, Herrera D, Sanz M. Antimicrobial effect of nanostructured membranes for guided tissue regeneration: an in vitro study. Dent Mater. 2020 Dec;36(12):1566-1577. doi: 10.1016/j.dental.2020.09.011
DS Docta Complutense
RD 7 abr 2025