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COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

Comparative efficacy of a specially engineered sonic powered toothbrush with unique sensing and control technologies to two commercially available power toothbrushes on established plaque and gingivitis

Farid Ayad, Dolores M Petrone, Gerald N Wachs, Luis R Mateo, Patricia Chaknis, Fotinos Panagakos
Journal of Clinical Dentistry 2012, 23: A5-10
23448082

OBJECTIVE: To evaluate the efficacy on plaque and established gingivitis of a new specially engineered sonic powered toothbrush with unique sensing and control technologies as compared to two commercially available power toothbrushes.

METHODS: This examiner-blind, three-treatment, parallel clinical study assessed plaque reduction via the comparison of pre- to postbrushing after a single use, and following four weeks' use measured by the Rustogi Modification of the Modified Navy Plaque Index. This study also assessed gingivitis using the Löe and Silness Gingival Index after four weeks' use. Qualifying adult male and female subjects from the northern New Jersey area reported to the study site after refraining from all oral hygiene procedures for 24 hours, and from eating, drinking, or smoking for four hours. Following an examination for gingivitis and plaque (pre-brushing), they were randomized into three balanced groups, each group using one of the three study toothbrushes in the order specified by a predetermined randomization plan. Subjects were instructed to brush their teeth for two minutes under supervision with their assigned toothbrush according to the manufacturers' instructions and a commercially available toothpaste (Colgate Cavity Protection), after which they were once 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 four weeks. They again reported to the study site at which time they were evaluated for plaque and gingivitis.

RESULTS: One-hundred eighty-four subjects complied with the protocol and completed the clinical study. Relative to the two commercially available toothbrushes, the new specially engineered sonic powered toothbrush with unique sensing and control technologies provided statistically significantly (p < 0.05) greater reductions in whole mouth plaque index scores (21.9 and 25.8%, respectively), gingival margin plaque index scores (14.5% and 18.9%, respectively), interproximal plaque index scores (160.0% and 136.4%, respectively), facial plaque index scores (17.9% for both), lingual plaque index scores (29.2% for both), and interproximal lingual plaque index scores (200.0% and 350.0%, respectively) after a single tooth brushing. Relative to the two commercially available toothbrushes, the new sonic powered toothbrush also provided statistically significantly (p < 0.05) greater reductions in whole mouth plaque index scores (47.4% and 40.0%, respectively), gingival margin plaque index scores (46.2% and 40.7%, respectively), interproximal plaque index scores (650% and 1400%, respectively), facial plaque index scores (47.6% and 40.9%, respectively), lingual plaque index scores (47.1% and 31.6%, respectively), and interproximal lingual plaque index scores (350.0% and 500.0%, respectively) after four weeks. There was no statistically significant (p > 0.05) difference between the two commercially available toothbrushes for any plaque index score comparison. Relative to one of the commercially available toothbrushes, the new sonic powered toothbrush provided statistically significant reductions (p < 0.05) in gingival index scores (25.0%) and gingivitis severity scores (33.3%) after four weeks of product use. There were no statistically significant (p > 0.05) differences in gingivitis or gingivitis severity index scores between the new sonic powered toothbrush and the other commercially available toothbrush.

CONCLUSION: A new specially engineered sonic powered toothbrush with unique sensing and control technologies provides significantly greater levels of efficacy on the removal of dental plaque after a single tooth brushing and after four weeks' use when compared to two commercially available power toothbrushes. The new sonic powered toothbrush also provides significantly greater levels of efficacy on the reduction of gingivitis and gingival bleeding when compared to one of the commercially available power toothbrushes.

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