Electric toothbrushes on the market are generally divided into two types, sonic and rotary.

　　The rotary electric toothbrush mainly achieves the purpose of cleaning teeth by rotating the brush head clockwise or counterclockwise.

　　At present, rotary toothbrushes on the market are divided into 2D and 3D. The 2D version of the electric toothbrush head is mainly rotated on the horizontal plane; the 3D version of the electric toothbrush head is rotated on the plane, which adds up and down vibration, which allows toothpaste Faster disintegration, deeper cleaning of interdental space, stronger cleaning ability. So the 3D version is generally about half more expensive than the 2D version.

　　The sonic electric toothbrush uses high frequency vibration to clean teeth. The so-called "sound wave" is not an ultrasonic wave. It actually relies on high-speed back and forth movements of the brush head to clean the teeth. Generally, the higher the frequency, the more expensive it is.

　　Generally speaking, the rotary electric toothbrush is more powerful than the sonic electric toothbrush, but the rotary type will definitely wear more teeth than the sonic type.

　　Therefore, if we need more cleaning ability, we can choose a rotary electric toothbrush; if we need a little bit, such as for the elderly, we can choose a sonic electric toothbrush.

　　2.Charging mode

　　The charging method of electric toothbrushes is divided into charging type and battery type.

　　The battery type uses dry batteries to provide power. Two dry batteries can last for about one month, and the power is not enough to provide too high speed.

　　The rechargeable electric toothbrush is just the opposite. It can be charged and used multiple times and can also meet the needs of high-speed rotation.

　　Therefore, choosing a rechargeable electric toothbrush is more economical and effective than a battery electric toothbrush.

　　3. Price factor

　　The price of electric toothbrushes on the market ranges from dozens to thousands, which is caused by many factors. However, it should be noted that high prices are not necessarily the best. The key is to suit you.

　　Generally the higher the frequency and speed, the more expensive the price. It is recommended that if you are using electric toothbrushes for the first time, you can start with an entry-level brand. If you use a high-speed electric toothbrush from the beginning, your teeth may become painful because they can't adapt for a while.