Technical principle of electric toothbrush

The electric toothbrush is a kind of toothbrush invented by Philippe-Guy Woog. Through the rapid rotation or vibration of the motor core, the brush head generates high-frequency vibration, which instantly decomposes the toothpaste into fine foam and cleans the teeth deeply. At the same time, the bristles vibrate. It can promote blood circulation in the mouth and has a massage effect on the gum tissue.

In 1954, Swiss doctor Philippe-Guy Woog invented the electric toothbrush. Sixty years later, the electric toothbrush is very similar to this predecessor's.

In principle, there are two main categories of electric toothbrushes: rotation and vibration. Rotary toothbrushes have a simple principle, that is, the motor drives the round brush head to rotate, which strengthens the friction effect while performing ordinary brushing actions. The rotating toothbrushes have strong strength, clean tooth surface, and relatively weak interdental cleaning, but Long-term use is not recommended due to large wear.

The vibration type toothbrush is more complicated and more expensive in terms of price. There is an electric-driven vibration motor inside the vibration type toothbrush, which can make the brush head produce high-frequency swings perpendicular to the direction of the handle, but the swing amplitude is very small, generally about 5 mm up and down, and the largest swing in the industry is 6 Mm.

When brushing teeth, on the one hand, the high-frequency swinging brush head can efficiently complete the action of washing the teeth. On the other hand, the vibration of more than 30,000 times per minute also causes the mixture of toothpaste and water in the mouth to produce a large number of tiny bubbles, which are generated when the bubbles burst. Pressure can penetrate deep between teeth to clean dirt.