Sodium trimetaphosphate and hexametaphosphate impregnated with silver nanoparticles: characteristics and antimicrobial efficacy. Issue 3 (16th March 2018)

• Record Type: Journal Article
• Authors: Mendes-Gouvêa, Carla Corrêa; do Amaral, Jackeline Gallo; Fernandes, Renan Aparecido; Fernandes, Gabriela Lopes; Gorup, Luiz Fernando; Camargo, Emerson Rodrigues; Delbem, Alberto Carlos Botazzo; Barbosa, Debora Barros
• Is Part Of: Biofouling. Volume 34:Issue 3(2018)
• Page Start: 299
• Page End: 308
• Publication Date: 2018-03-16
• Subjects: Polyphosphates -- silver nanoparticles -- biofilm -- Candida albicans -- Streptococcus mutans; Marine fouling organisms -- Periodicals; Materials -- Biodeterioration -- Periodicals; Fouling -- Periodicals; Biodegradation -- Periodicals; Environmental Microbiology -- Periodicals; Water Microbiology -- Periodicals; 576.165
• DOI: 10.1080/08927014.2018.1437146
• Languages: English
• ISSNs: 0892-7014

Abstract

Abstract: This study aimed to synthesize and characterize materials containing silver nanoparticles (AgNP) with polyphosphates (sodium trimetaphosphate (TMP) or sodium hexametaphosphate (HMP), and evaluate their effect against Candida albicans and Streptococcus mutans. The minimum inhibitory concentration (MIC) was determined, which was followed by the quantification of the biofilm by counting colony-forming units (CFUs), the amount of metabolic activity, and the total biomass. The MICs revealed greater effectiveness of composites containing 10% Ag (TMP + Ag10% (T10) and HMP + Ag10% (H10)) against both microorganisms. It was observed that T10 and H10 reduced the formation of biofilms by 56–76% for C. albicans and by 52–94% for S. mutans for total biomass and metabolic activity. These composites promoted significant log reductions in the number of CFUs, between 0.45–1.43 log10 for C. albicans and 2.88–3.71 log10 for S. mutans ( p < .001). These composites demonstrated significant antimicrobial activity, especially against S. mutans, and may be considered a potential alternative for new dental materials.