Scientists have created a toothbrush that generates electricity and destroys bacteria:.
"Researchers from China have developed a toothbrush that helps fight plaque not only through regular brushing, but also with the help of microcharges. The bristles are made of a special material - when they bend during cleaning, a small electric charge is created. This triggers the formation of reactive oxygen species, which damage the bacterial membrane and prevent them from reattaching to the teeth.
The development was tested in the laboratory and in a three-month clinical trial. People who used a toothbrush had greater reductions in plaque, gingivitis, and bleeding gums compared to regular brushes. In this case, the device works due to the movement of the bristles themselves."