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Antimicrobial and Substantivity Properties of Silver Nanoparticles against Oral Microbiomes Clinically Isolated from Young and Young-Adult Patients
The dental plaque is an oral microbiome hardly associated to be the etiological agent of dental caries and periodontal disease which
are still considered serious health public problems. Silver nanoparticles (AgNPs) have demonstrated to have good antimicrobial
properties affecting a wide variety of microorganisms, including oral bacteria; however, there is no scientific information that
has evaluated the antimicrobial effect of AgNPs against clinical oral biofilms associated with dental caries and periodontal
disease. The aim of this study was to determine the antimicrobial and substantivity effects of AgNPs in oral biofilms isolated
clinically from patients with dental caries and periodontal disease. Sixty-seven young and young-adult subjects with dental
caries and periodontal disease were clinically sampled through the collection of subgingival dental plaque. The inhibitory effect
of AgNPs was performed with standard microbiological assays by triplicate using two sizes of particle. Polymerase chain
reaction (PCR) assay was used to identify the presence of specific bacterial species. All AgNPs showed an inhibitory effect for all
oral biofilms for any age and, generally, any gender (p > 0:05); however, the effectiveness of the antimicrobial and substantivity
effects was related to particle size, time, and gender (p < 0:05). The identified microorganisms were S. mutans, S. sobrinus,
S. sanguinis, S. gordonii, S. oralis, P. gingivalis, T. forsythia, and P. intermedia. The AgNPs could be considered as a potential
antimicrobial agent for the control and prevention of dental caries and periodontal disease