A study to investigate the effect of a propolis‐containing mouthrinse on the inhibition of de novo plaque formation

The results of a study to investigate the effectiveness of a propolis-containing mouthrinse in the inhibition of de novo plaque formation are presented. Subjects used a propolis-containing rinse, a negative control and a positive control in a double-blind, parallel, de novo plaque formation study design. The chlorhexidine mouthrinse was significantly better than the others in plaque inhibition. The propolis-containing rinse was marginally better than the negative control, but this difference was not significant.