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Synergistic antibiofilm activity of methylene blue and silver nanoparticle-mediated photothermal therapy against Enterococcus faecalis biofilm
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Journal Article
Synergistic antibiofilm activity of methylene blue and silver nanoparticle-mediated photothermal therapy against Enterococcus faecalis biofilm
2025
Overview
Biofilm formation by
Enterococcus faecalis
(
E. faecalis)
in root canals is a significant challenge in endodontic therapy, often leading to persistent infections and treatment failures. This research paper investigates the antibiofilm efficacy of methylene blue mediated photothermal treatment (MB-PTT), as compared to the sole effect of diode laser, PTT, and sodium hypochlorite (NaOCl) on
E. faecalis
biofilms. 45 maxillary central incisors were decoronated, prepared and infected by
E faecalis
for seven days. Forty samples were randomly allocated as follows; GI; irrigated with 2.6% NaOCl, GII; irradiated with 660 nm diode laser (250 mW) for 180 s. GIII; Silver nanoparticles (AgNPs) with diode laser application at same parameters (AgNPs-PTT), GIV: accompanied MB and AgNPs-PTT, while 5 samples were kept as control for biofilm formation. The antibiofilm effect was demonstrated both by bacterial colonies counting (CFU/ml) and scanning electron microscope images. The results highlight the potential of all experimental treatment modalities (
P
< 0.01), However complete absence of detactable bacterial colonies was only evident when MB was coupled with AgNPs-PTT. Accompanied MB with PTT is a promising approach with effective antibiofilm activity against
E. faecalis
biofilms.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ Anti-Bacterial Agents - pharmacology
/ Biofilm
/ Biofilms
/ Biofilms - growth & development
/ Biofilms - radiation effects
/ Colonies
/ Enterococcus faecalis - drug effects
/ Enterococcus faecalis - physiology
/ Humanities and Social Sciences
/ Humans
/ Incisors
/ Lasers
/ Metal Nanoparticles - chemistry
/ Methylene Blue - pharmacology
/ Photothermal Therapy - methods
/ Scanning electron microscopy
/ Science
/ Silver
/ Teeth
