Evaluation of a prebrushing mouthrinse in controlling dental plaque.

: The study was designed to evaluate an advertising claim made for a commercial pre-brushing mouthrinse, that it aided plaque removal. Forty-one subjects completed a six month, randomised, two-group, blind, pragmatic clinical trial. Those in the control group continued with their normal oral hygiene practices whilst those in the study group were given supplies of the test rinse and asked to use it in accordance with the manufacturer's instructions. Mean plaque scores recorded in the test group after one month, three months and six months, were statistically significantly lower than in the control group supporting the claim made on behalf of the test product. The clinical significance of these findings, for example on gingivitis, is uncertain and further research is needed to assess this.