Lorenz, K.; Brun, G.; Heumann, S.; Netushil, L.; Brecks, M.; Gofman, T. Effect of Two Chlorhexidine Oral Rinses on Mucous Plaque Accumulation, Gingivitis and Dental Discoloration. Randomized Blind Placebo-Controlled Study. КС 2015, 74—81.