AI Article Synopsis

  • The study examines how a soda-lime-glass coated with silver nanoparticles (glass-nAg) affects the growth of biofilms formed by Streptococcus oralis, a bacteria associated with gum disease.
  • The research evaluated biofilm formation using crystal violet staining and viable cell counts on different disk types: glass, glass with silver nanoparticles, and uncoated titanium.
  • Results showed that the glass-nAg coating significantly reduced biofilm formation by over 99.7% compared to both titanium and regular glass disks, indicating its potential for use in antibacterial surfaces like dental implants.

Article Abstract

This paper reports the effect of soda-lime-glass-nAg coating on the viability of an in vitro biofilm of Streptococcus oralis. Three strains (ATCC 35037 and two clinical isolates from periodontitis patients) were grown on coated with glass, glass containing silver nanoparticles, and uncoated titanium alloy disks. Two different methods were used to quantify biofilm formation abilities: crystal violet staining and determination of viable counts. The influence of the surface morphology on the cell attachment was studied. The surface morphology was characterized by scanning electron microscopy (SEM) and using a profilometer. SEM was also used to study the formation and the development of biofilm on the coated and uncoated disks. At least a >99.7% inocula reduction of biofilm respect to titanium disks and also to glass coated disks was observed in the glass-nAg coated disks for all the studied strains. A quantitative evaluation of the release of silver was conducted in vitro to test whether and to what extend the biocidal agent (silver) could leach from the coating. These findings suggest that the biofilm formation of S. oralis strains is highly inhibited by the glass-nAg and may be useful for materials which require durable antibacterial effect on their surfaces, as it is the case of dental implants.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3411775PMC
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0042393PLOS

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