Sonic toothbrush means that the vibration frequency of the bristles/brush head is the same or similar to the frequency of the sound wave, so it is also called a sonic vibration toothbrush. It is not literally understood to use "sound waves" to brush your teeth, but the rapid movement of bristles similar to the frequency of sound waves creates a super-clean effect that is nearly 100 times that of traditional manual toothbrushes.

The electric toothbrush uses a high-speed vibrating movement to drive the brush head to rotate or vibrate to achieve the effect of cleaning the teeth.