Abstract
BackgroundThe purpose of the study is to assess the antiadherent and antibacterial properties of surface-modified different orthodontic brackets with silver nanoparticles against Streptococcus mutans and Streptococcus sobrinus, using radiomarker.MethodsIn this study evaluated quantitatively the adherence of Streptococci to orthodontic brackets, 300 samples of orthodontic brackets were selected and classified in to 10 groups as follow: GIn (InVu-Roth), GIIn (System-AlexanderLTS), GIIIn (Gemini-Roth), GIVn (NuEdge-Roth), GVn (Radiance plus-Roth), GVI (InVu-Roth), GVII (System-AlexanderLTS), GVIII (Gemini-Roth), GIX (NuEdge-Roth), GX (Radiance plus-Roth). All the samples were sonicated and Streptococci were cultivated by gender. A radioactive marker (3H) was used to codify the bacteria and measure them. After that, the brackets were submerged in a radiolabelled solution, and the radiation was measured. The statistical analysis was calculated with ANOVA test (Sheffè post hoc).ResultsThe results showed significant differences were found among the groups. GIIIn shown the lowest scores for both bacteria; in contrast, GIX for Streptococcus mutans and GVI for Streptococcus sobrinus were the highest values.ConclusionsSurface modification of orthodontic brackets with silver nanoparticles can be used to prevent the accumulation of dental plaque and the development of dental caries during orthodontic treatment.
Highlights
The purpose of the study is to assess the antiadherent and antibacterial properties of surfacemodified different orthodontic brackets with silver nanoparticles against Streptococcus mutans and Streptococcus sobrinus, using radiomarker
Dental caries has been defined by the World Health Organization (WHO) as a localized process of multifactorial origin; this begins as a demineralization, which is the softening of the hard tissue of the tooth and evolves into the formation of a cavity
The dpm values, orthodontic brackets with greater adhesion of S. mutans were labeled as group GVI (3153.83 dpm), followed by group GVIII (2203.94 dpm), and group GIX (2186.23 dpm), silver nanoparticles are not added to these groups
Summary
The purpose of the study is to assess the antiadherent and antibacterial properties of surfacemodified different orthodontic brackets with silver nanoparticles against Streptococcus mutans and Streptococcus sobrinus, using radiomarker. The oral cavity environment provides certain essential characteristics for the proliferation of bacteria that are capable of producing acids that demineralize the surface of the tooth enamel [1]. Enamel demineralization is caused by the organic acids produced by various microorganisms, mainly. Streptococcus mutans (S. mutans) and Streptococcus sobrinus (S. sobrinus), which are identified as the main pathogens in dental caries [4,5,6,7]. Dental caries has been defined by the World Health Organization (WHO) as a localized process of multifactorial origin; this begins as a demineralization, which is the softening of the hard tissue of the tooth and evolves into the formation of a cavity. WHO reports that there is a prevalence in 60% to 90% of school children and almost 100% of adults have dental caries around the world, coinciding with the Official Mexican Standard 013 report, where it is mentioned that there is a 90% prevalence in Mexico [8].
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