The Effect of and Extracts Against , , and .

Statement Of The Problem: There are global efforts for introducing a new herbal antimicrobial agent with minimal side effects. There are some reports about the antimicrobial properties of and .

Purpose: In this study, the antimicrobial properties of and have been assessed.

Material And Method: In this experimental study, the dental plaque samples were collected from children aged 3 to 5 years old who were referred to a private dental office with diagnosis of dental caries. After determination of the bacterial colonies of , and , the minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of ethanolic and methanolic extracts of and were measured by macrodilution and microdilution methods.

Results: The mean MIC and MBC of extract and extract and their combination against , , and were statistically different (< 0.001). The combination of these extracts showed the lowest MIC and MBC.

Conclusion: Hydroalcoholic extracts of the and were effective antibacterial agent against , , and so the combination of these two extracts showed the highest antibacterial properties on all the bacteria evaluated.