Are Electric Toothbrushes A Rip-off

Electric toothbrushes were originally designed for people with disabilities. Their working principle is actually quite simple: a motor drives the brush head to rotate or vibrate to clean teeth.

In short, it frees up your hands, letting the toothbrush move on its own.

Based on the working principle of electric toothbrushes, we can divide them into two categories: rotary and vibrating.

Rotary toothbrushes are easy to understand; they use a motor to rotate the brush head to clean teeth.

Vibrating toothbrushes are also easy to understand; they use a motor to give the brush head a vibration frequency to clean teeth.

Therefore, the so-called "sonic" or "ultrasonic" claims made by merchants are indeed a rip-off; it's just rotation or vibration.