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  • Title: An exploratory study to investigate stain build-up with long term use of a stannous fluoride dentifrice.
    Author: Milleman KR, Patil A, Ling MR, Mason S, Milleman JL.
    Journal: Am J Dent; 2018 Apr; 31(2):71-75. PubMed ID: 29630789.
    Abstract:
    PURPOSE: To monitor extrinsic stain formation over 24 weeks with twice-daily use of an anhydrous 0.454% SnF2 dentifrice containing 5% sodium tripolyphosphate (STP) ('Test'), compared to a standard fluoride dentifrice (0.76% fluoride as sodium monofluorophosphate [SMFP\) ('Comparator') following a professional prophylaxis. METHODS: Primary efficacy variables were between-treatment differences in extrinsic dental stain of anterior teeth after 4, 8, 12, and 24 weeks' use using mean area and intensity scores of the MacPherson modification of the Lobene stain index (MLSI), and to monitor oral tolerability. RESULTS: Overall, 214 subjects were randomized to treatment. The Test dentifrice group demonstrated statistically significantly less stain compared with the Comparator at each timepoint for all outcome variables (MLSI - Area × Intensity, Area only, and Intensity only) with the exception of MLSI (Area × Intensity) at Week 12. Products were generally well tolerated with 26 treatment-related adverse events (TRAEs) reported (10 with Test, 16 with Comparator). Five subjects withdrew from the 24-week study due to TRAEs, three in the Test group, two in the Comparator group. Statistically significantly less anterior tooth staining was observed with up to 24 weeks twice-daily brushing with a 0.454% SnF2/5% STP anhydrous dentifrice compared to a marketed fluoride dentifrice with 0.76% SMFP. CLINICAL SIGNIFICANCE: Long term use of a SnF2/STP dentifrice demonstrated minimal stain build-up after 24 weeks, twice-daily use; products were generally well-tolerated.
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