Journal
JOURNAL OF BREATH RESEARCH
Volume 2, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1752-7155/2/1/017013
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To evaluate the effectiveness of a multibenefit mouthrinse containing 0.05% cetylpyridinium chloride (CPC) and 0.025% sodium fluoride in reducing volatile sulfur compound (VSC) levels and total cultivable salivary bacteria, at both 4 h and overnight. In vitro analysis of efficacy was performed using saliva-coated hydroxyapatite disc substrates first treated with the mouthrinse, then exposed to whole human saliva, followed by overnight incubation in air-tight vials. Headspace VSC was quantified by gas chromatography (GC). A clinical evaluation was conducted with 14 subjects using a crossover design. After a seven-day washout period, baseline clinical measurement of VSC was performed by GC analysis of mouth air sampled in the morning prior to eating, drinking or performing any oral hygiene. A 10 mL saline rinse was used to sample and enumerate cultivable salivary bacterial levels via serial dilution and plating. Subjects were instructed to use the treatment rinse twice daily in combination with a controlled brushing regimen. After one week the subjects returned in the morning prior to eating, drinking or performing oral hygiene to provide samples of overnight mouth air and salivary bacteria. The subjects were then immediately rinsed with the test product, and provided additional mouth air and saliva rinse samples 4 h later. A multibenefit rinse containing 0.05% CPC and 0.025% sodium fluoride was found to reduce VSC in vitro by 52%. The rinse also demonstrated a significant clinical reduction in breath VSC (p < 0.05) of 55.8% at 4 h and 23.4% overnight relative to baseline VSC levels. At both time points, the multibenefit rinse was more effective than the control; this difference was statistically significant at the overnight time point (p < 0.05). Total cultivable salivary bacteria levels were also reduced significantly (p < 0.05) at 4 h and overnight by this mouthrinse compared to baseline levels and the control. A multibenefit mouthrinse was shown to reduce in vitro VSC levels via headspace analysis and clinically at the 4 h and overnight time points. A significant reduction in total cultivable salivary bacteria was also observed at all time points, supporting the VSC data.
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