What is sonic brushing?

In the past decade, a new kind of tooth brushing has been introduced, the sonic brushing. But what is this actually? And how is it different from normal electric? A sonic toothbrush produces vibrations while brushing your teeth, causing the toothbrush to automatically make the right movement at a high frequency. A sonic toothbrush is known to remove more plaque if you brush your teeth for 2 minutes at least twice a day. Sonic brushing also stimulates good fluid dynamics, so that the toothpaste penetrates deeper between your teeth, so that not only the plaque on the teeth is removed, but also between them.