Isfahan University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share By
The Antibacterial Effects of Coffee Extract, Chlorhexidine, and Fluoride Against Streptococcus Mutans and Lactobacillus Plantarum: An in Vitro Study Publisher



Akhlaghi N1 ; Sadeghi M1 ; Fazeli F1 ; Akhlaghi S2 ; Mehnati M1 ; Sadeghi M1
Authors

Source: Dental Research Journal Published:2019


Abstract

Background: The aim of the present study was to compare the antibacterial effects of coffee extract with those of 0.2% sodium fluoride and chlorhexidine (CHX) mouthrinses on Streptococcus mutans and Lactobacillus plantarum in vitro. Materials and Methods: In this experimental in vitro study, the minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC), and disk diffusion method were determined for different concentrations of coffee extract, 0.2% CHX, and 0.2% fluoride against S. mutans and L. plantrum. Data were analyzed using Kruskal-Wallis analysis. Statistical significance level was established at P < 0.05. Results: The MIC of coffee was achieved at 62.5 and 500 mg/mL against S. mutans and L. plantarum, respectively. The MBC against S. mutans was 125 mg/mL. The diameter of the zone of inhibition around S. mutans for pure coffee extract (100%), CHX (0.2%), and fluoride was 19.8 mm, 9.92 mm, and 0, respectively. At a concentration of 6.25%-100%, coffee had a significantly larger zone of inhibition compared to CHX and fluoride)P= 0.01). The MBC of coffee and fluoride was 0 against L. plantarum. The lowest inhibitory concentration belongs to CHX (MIC: 0.624 mg/ml for L. plantarum and 0.125 mg/ml for S. mutans). Conclusion: The coffee had an antibacterial effect against S. mutans on 62.5-1000 mg/ml concentrations. The zone of inhibition around S. mutans for higher concentrations of coffee (6.25%-100%) was significantly higher than that of CHX and fluoride 0.2%. Bacteriostatic effect of coffee against L. plantarum was obtained at 500-1000 mg/ml. However, coffee and fluoride did not show any bactericidal effects against L. plantarum. © 2019 Dental Research Journal | Published by Wolters Kluwer - Medknow.
Other Related Docs
8. Antimicrobial Activities of Phenolic and Non-Phenolic Fractions of Inula Viscosa (L) Extract, Journal of Biologically Active Products from Nature (2011)