Comparison between plaque inhibiting effect of chlorhexidine and aqueous solutions of copper‐and silverions

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Abstract
Abstract – Rinsing experiments with chlorhexidine, copper and silver solutions were performed in a group of volunteers. The plaque score ws measured after rinsing with the test solutions for 4 d and no mechanical oral hygiene allowed. Chlorhexidine and copper, both 1.1 mM solutions, gave reduced plaque scores, chlorhexidine being slightly more effective than copper, but the difference was difference was not statistically significant. A 1.1 mM solution of silver mitrate also showed a plaque inhibiting effect, statistically significant from the placcbo, but the effect was also significantly less than when chlorhexidine or copper were used. Copper ions may be of dimical interest because this is an essential metal in human nutrition with low loxicity