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COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

A clinical study comparing the supragingival plaque and gingivitis efficacy of a specially engineered sonic powered toothbrush with unique sensing and control technologies to a commercially available manual flat-trim toothbrush

Salim Nathoo, Suru Mankodi, Luis R Mateo, Patricia Chaknis, Foti Panagakos
Journal of Clinical Dentistry 2012, 23 Spec No A: A11-6
23448083

OBJECTIVE: This study was designed to evaluate the efficacy of a new specially engineered sonic powered toothbrush with unique sensing and control technologies, as compared to a manual flat-trim toothbrush on supragingival plaque and established gingivitis.

METHODS: This examiner-blind, two-treatment, parallel clinical research study assessed plaque removal via the comparison of pre- to post-brushing after a single use, and again after four- and 12-weeks' use using the Rustogi Modification of the Modified Navy Plaque Index. This study also assessed gingivitis at four and 12 weeks using the Löe and Silness Gingival Index. Qualifying adult male and female subjects from the southern Florida area reported to the study site after refraining from any oral hygiene procedures for 24 hours, and from eating, drinking, and smoking for four hours. Following an examination for plaque (pre-brushing) and gingivitis, they were randomized (for both plaque and gingivitis) into two balanced groups, each group using one of the two study toothbrushes. Subjects were instructed to brush their teeth for two minutes under supervision with their assigned toothbrush according to the manufacturer's instructions, and commercially available toothpaste (Colgate Cavity Protection Toothpaste), after which they were again evaluated for plaque (post-brushing). Subjects were then dismissed from the study site with the toothpaste and their assigned toothbrush to use at home twice daily for the next 12 weeks. They again reported to the study site after four and 12 weeks of product use, at which time they were evaluated for plaque and gingivitis.

RESULTS: Seventy-six out of 82 enrolled subjects complied with the protocol and completed the clinical study. The new specially engineered sonic powered toothbrush with unique sensing and control technologies provided statistically significant reductions in gingival and gingivitis severity index scores after four and 12 weeks of product use. The manual toothbrush provided a statistically significant reduction in gingival index score only at the 12-week time point. Relative to the manual toothbrush group, after a single tooth brushing and after four and 12 weeks, the new sonic powered toothbrush provided statistically significantly greater reductions in whole mouth plaque index scores (1.6, 2.05, and 1.9 times, respectively), gingival margin plaque index scores (12.0, 90.0, and 8.2 times, respectively), and interproximal plaque index scores (2.0, 3.2, and 2.1 times, respectively). Relative to the manual toothbrush group after four and 12 weeks, the new sonic powered toothbrush provided statistically significant reductions in gingival index scores of 11.0 and 7.0 times, respectively, and in gingivitis severity index scores of 3.0 and 3.5 times, respectively. All statistically significant reductions were at the p < or = 0.05 level.

CONCLUSION: The new specially engineered sonic powered toothbrush unique sensing and control technologies provides statistically significant and clinically relevant levels of efficacy in the removal of supragingival dental plaque after a single tooth brushing, and after four and 12 weeks' use. The new sonic powered toothbrush also provides statistically significantly greater levels of efficacy in the reduction of supragingival plaque, gingivitis, and gingival bleeding when compared to a manual flat-trim toothbrush.

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