This study evaluated the efficacy of rabdosia rubescens against gingivitis and compared the therapeutic efficacy of different dosage forms of rabdosia rubescens.A multi-center,randomized,double-blind,double-simulation,positive-controlled and parallel trial was conducted.A total of 136 patients exhibiting clinical symptoms of gingivitis were enrolled.The subjects were randomly assigned to two groups:test group(n=67),in which rabdosia rubescens drop pill(960 mg) and 4 tablets of simulation agent of rabdosia rubescen were orally given to the subjects three times a day for 5 days;and control group(n=69),in which the subjects were administered the tablets of rabdosia rubescens(1000 mg) and 24 drop pills of simulation agent of rabdosia rubescens thrice daily for 5 days.The experimental protocols and diagnostic criteria were established by expert panel prior to the experiment.The clinical symp-toms were graded according to the severity of the disease and quantified.The total scores and scores for each clinical symptom of gingivitis were assessed at baseline and on the 6th day post-treatment.The therapeutic efficacy was compared between the two groups and in each group itself before and after the treatment.The results showed that in the two groups,the subjects who were given rabdosia rubescens,drop pill or tablet,had a decrease in total scores and scores for each clinical symptom when compared with those before treatment(P<0.01).There was significant difference in the therapeutic efficacy between the test group and the control group with the efficacy rate being 92.54% and 79.71% respectively(P<0.05).It was concluded that rabdosia rubescens showed great promise in treating gingivitis.And rabdosia rubescens drop pill was more efficacious than rabdosia rubescens tablet.
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