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  • Title: Control of Established Gingivitis and Dental Plaque Using a 1450 ppm Fluoride/Zinc-based Dentifrice: A Randomized Clinical Study.
    Author: Zhong Y, Li X, Hu DY, Mateo LR, Morrison BM, Delgado E, Zhang YP.
    Journal: J Clin Dent; 2015; 26(4):104-8. PubMed ID: 26856016.
    Abstract:
    PURPOSE: To investigate the clinical efficacy in controlling established gingivitis and dental plaque of a 1450 ppm fluoride as sodium monofluorophosphate (SMFP)/zinc-based dentifrice, as compared to a zinc-free dentifrice with 1450 ppm fluoride as SMFP after six months product use. METHODS: A six-month clinical study, with eighty-six (86) subjects, was conducted in Chengdu, China, using a double-blind, randomized, parallel-group treatment design. After a baseline evaluation, study subjects were randomly assigned to one of the two study treatments: 1) 1450 ppm fluoride as SMFP/zinc-based dentifrice (Test) or 2) 1450 ppm fluoride as SMFP/zinc-free dentifrice (Negative Control). Subjects were provided with a soft bristle toothbrush and brushed their teeth twice daily (morning and evening) for one minute with their assigned dentifrice. After three months, and again after six months of product use, subjects returned to the testing facility for their followup gingivitis and plaque examinations. Statistical analyses were performed separately for the gingivitis assessments and dental plaque assessments using the appropriate statistical methods. All statistical tests of hypotheses were two-sided, and employed a level of significance of α = 0.05. RESULTS: After three and six months of product use, subjects assigned to the Test treatment exhibited statistically significant (p < 0.001) reductions in gingival index and plaque index scores as compared to subjects assigned to the Negative Control treatment. CONCLUSION: The results of this single-center, double-blind, parallel-group and randomized clinical study support the conclusion that a 1450 ppm fluoride as SMFP/zinc-based dentifrice provides clinically meaningful and statistically significant reductions in gingivitis (23.8%) and dental plaque (22.5%) as compared to a 1450 ppm fluoride as SMFP/zinc-free dentifrice over a six-month period of twice-daily product use.
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