Small RCT comparing mouthwashing with PVP-I, Chlorhexidine, and water, showing both PVP-I and Chlorhexidine were effective, with PVP-I increasing Ct by a mean of 4.45 (p < 0.0001) and Chlorhexidine by a mean of 5.69 (p < 0.0001), compared to no significant difference for water.
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