Abstract
Objective: Therefore, we aimed in this study to evaluate the effect of Veillonella infantium on the biofilm formation of oral Streptococcus species.Methods: Dual-species biofilm was formed between V. infantium and oral Streptococcus using the wire method, and it was then incubated at 37°C underanaerobic condition for 5 days. Biofilm formation was determined by measuring the DNA concentration. Single species biofilm of oral Streptococcuswas generated under the same conditions and was used as a control group.Result: The presence of V. infantium decreased the biofilm formation of Streptococcus mutans, where, in contrast, the formation of biofilm inStreptococcus sanguinis was increased by the presence of V. infantium (p<0.05).Conclusion: The presence of V. infantium decreased the biofilm formation of S. mutans.
Highlights
More than 700 bacterial species have been identified as existing in the oral cavity [1]
The combination of V. infantium and S. mutans decreased the amount of biofilm formation after 5 days of incubation as compared with the control group
The presence of V. infantium increased the amount of the biofilm formation in combination with S. sanguinis on days 1, 3, and 5 of incubation as compared with control group
Summary
More than 700 bacterial species have been identified as existing in the oral cavity [1]. Interactions between those microorganisms are found biofilm on the dental surface, which is known as dental plaque. 65% of bacterial infectious disease is associated with bacterial biofilm. Biofilm plays a role on the development of oral infectious disease, such as caries [3]. Biofilm formation consists of several stages initiated by the attachment of an initial colonizer such as Streptococcus species, on pellicle-coated dental surfaces, followed by an early colonizer such as Veillonella species. After the settlement of the early colonizer, the maturation process occurs followed by dispersion of mature cells to other surfaces to begin the cycle of biofilm formation [3,5]
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