News & Events

Bluestone Center for Clinical Research Investigators Publish in the International Journal of Dental Hygiene

April 25, 2014

Study demonstrates that the Panasonic EW-DL90 toothbrush safely and effectively removes more plaque than a standard manual toothbrush after 1 and 3 weeks of use. Improvement in gingival inflammation was observed after 1 week of treatment, but there was no difference between the two groups after 3 weeks.

Researchers from the NYU Bluestone Center for Clinical Research have published “Toothbrush Efficacy for Plaque Removal” in The International Journal of Dental Hygiene.

Mechanical plaque removal is essential in the prevention of dental caries and oral diseases such as gingivitis and periodontitis. Although a standard manual toothbrush can be effective in the removal of dental plaque, evidence suggests that the majority of the population does not use these brushes effectively. Previous studies have produced varied results regarding the efficacy of power toothbrushes versus manual toothbrushes, indicating that efficacy varies greatly with powerbrush design. The purpose of this study was to determine how well a new powerbrush, the Panasonic EW-DL90, removes plaque as compared to a manual toothbrush.

A total of 84 subjects with good general and oral health were enrolled in the study and randomized to either the powerbrush group or manual brush group. Subjects were asked to brush with the assigned toothbrush and toothpaste twice a day for two minutes each time, and to refrain from using any other oral hygiene aids such as floss or mouth rinse. Plaque levels and papillary bleeding scores were measured at baseline and after 1 and 3 weeks of product use. Investigators found that both groups experienced a reduction in plaque levels after 3 weeks relative to baseline. The powerbrush group showed significantly lower plaque levels after 1 and 3 weeks of product use compared to the manual group. Although the papillary bleeding scores in the powerbrush group were significantly lower than those in the manual group after 1 week, no difference in papillary bleeding was observed between the two groups after 3 weeks. The investigators suggest that the use of interdental cleaning devices in conjunction with a powerbrushing regimen may be able to provide superior stability of long-term gingival health.

The article was authored by Kira Nightingale, MS, CCRC, and Patricia Corby, DDS, MS, Associate Director of the Bluestone Center for Clinical Research. Other authors include Sridhar Chinta, DDS, MS; Puneet Agarwal, DDS, MS; Maria Nemelivsky, RDH, DDS; Andrew Frisina, MS, CCRC; Zixuan Cao, PhD, MS; Robert Norman, MS, PhD; and Gene Fisch, MA, MS, PhD.

About the Bluestone Center for Clinical Research: The Bluestone Center for Clinical Research, in conjunction with the NYU Oral Cancer Center, is an academic research organization located at the NYU College of Dentistry. Bluestone’s mission is to take a creative scientific approach to transform world health. Bluestone is dedicated to conducting research in oral cancer, cancer symptomology, pharmaceuticals, medical devices, emerging biotechnology, periodontics, implants, and oral health products.