The working principle of the sonic toothbrush is: relying on the high-speed movement of the micro-motor, the toothbrush head is driven to swing up and down at high speed, generating mechanical vibration, that is, generating sound waves.

The suitable vibration frequency of the sonic toothbrush is between 166-666 Hz (10000-37000 times/min), and the sonic toothbrush of different frequencies can achieve different degrees of tooth cleaning effect. The cleaning effect of a sonic toothbrush is proportional to the frequency and amplitude of the sonic wave.

2. Principle of sound wave generation

(1) Vibration principle of eccentric wheel of high-speed micro motor:

This principle is more general and common, and it is also widely used. Generally, the motor speed should be as high as 30,000 revolutions per minute. A higher speed will affect the life of the motor itself. The amplitude and noise produced by sonic vibration vary with different specifications of the motor and toothbrush structure design. There is no absolute statement.

(2) Principle of high frequency vibration of magnetic levitation motor:

The electromagnetic vibrating device is used as the vibration source, and its principle: the electromagnetic device forms a magnetic field after power on, and the vibrating device is suspended in the middle of the magnetic field to form a high-frequency vibration frequency, which is then transmitted to the toothbrush through the transmission shaft.

This kind of vibration principle does not produce mechanical friction inside the motor, has strong stability and relatively large output power, and the generated sound wave frequency can reach 37,000 times per minute. The higher the sound wave frequency, the higher the relative technical difficulty of the motor.

The function of sonic toothbrush

Oral cleaning: unique tooth stain softening system, directional removal of residual food and dental plaque system.

Tooth cosmetology: Safe care, protect the natural enamel of teeth intact, and make gums moist and elastic.

Gum Massage: Give the gums a professional and safe massage experience. Promote gum microcirculation, prevent gum atrophy, reduce gum bleeding and oral ulcers. Teeth are not allergic to hot and cold stimulation.

Oral greening: The sonic toothbrush completely removes bacteria from the teeth, gums, periodontal, and tongue coating, leaving the mouth refreshing and refreshing.