Antimicrobial Activity of Propolis on Different Oral Bacteria

Propolis is a natural substance which is produced from honey bees through collecting and transforming resins and exudates from plants. The propolis can use the medicine field for antibacterial effect. The purpose of our study was to investigate the antibacterial activity for the oral prevention of dental caries. The propolis was from Australia honeybees, diluted 5w% and 10w% in ethanol. The antibacterial activity of the treated propolis against Streptococcus gordonii(S. gordonii), Streptococcus intermedius(S. intermedius) and Streptococcus sanguinis(S. sanguinis) were determined using optical density and colony forming units. All experimental groups were effective against bacteria. Streptococcus intermedius and Streptococcus sanguinis were more effective compared to Streptococcus gordonii. All groups inhibition bacterial growth, but there were no significant differences of different wt% groups. There were significantly low activities treated with propolis. The antibacterial activity indicated propolis against Streptococcus gordonii, Streptococcus intermedius and Streptococcus sanguinis. Propolis possesses several medicinal properties. In this study, the 5 wt% and 10 wt% group of propolis was indicated antibacterial effects, which succeeded in inhibiting the bacteria growth. Our study showed a significant effect related to oral bacteria species. In conclusion, the antibacterial action observed in this study suggests that this propolis substance could be used as an alternative medicine for infectious conditions of the oral disease without causing any major local or systemic adverse effects.