Antibacterial activity of Grey MTA mixed with different vehicles
The aim of this study was to investigate the in vitro antibacterial effects of Grey MTA mixed with different vehicles on a mix of S aureus. MTA was mixed with water, local anesthetic and 0.2% Chlorhexidine. 24 hour set test materials were placed on the surface of the inoculated media and incubated in appropriate atmospheres for 48 hours at 37 degrees centigrade. Augmentin suspension was used as a positive control. Dry, sterile tin foil discs were used as a negative control. The antibacterial effects of each material were determined by measuring the diameter of the zones of inhibition in millimeters. Chlorhexidine group had significantly bigger zone of inhibition (P< 0.05). In conclusion, substituting 0.2% Chlorhexidine gluconate for water enhanced the antimicrobial activity of Grey MTA.
