Toothbrush that emits electricity may more effectively prevent gum disease
A toothbrush with bristles that produce electricity as they bend has shown promise for reducing plaque and gum inflammation
A toothbrush that generates electricity could more effectively fight harmful bacteria and remove plaque, according to a new study. Researchers at Peking University in China developed piezoelectric plastic bristles that produce electric charges under pressure, triggering chemical reactions that create molecules damaging bacteria.
When tested, the toothbrush led to over twice the reduction of plaque, gum inflammation, and bleeding compared to conventional toothbrushes. The thicker bristles were particularly effective, killing up to 53% of Streptococcus mutans, which causes cavities, and 78% of Porphyromonas gingivalis, which contributes to gum disease, compared to just 9% and 8% for nylon bristles.
The study also found that the piezoelectric toothbrush removed more than 99% of human plaque, compared to about 80% for conventional nylon brushes. In a clinical trial involving 109 adults with dental plaque and gum inflammation, the piezoelectric toothbrush reduced plaque build-up, gum inflammation, and bleeding by roughly 40%, compared to a 15% reduction with conventional brushes.
Further research is needed to confirm whether the toothbrush can prevent issues like cavities and tooth loss.
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