What is a sound wave? Sound waves are mechanical longitudinal waves that propagate in elastic media, with frequencies ranging from 20 to 20000 Hz and can be heard by the human ear
The working principle of a sonic toothbrush is to rely on the high-speed motion of a micro motor to drive the toothbrush head to swing left and right at high speed, generating mechanical vibration, which is the generation of sound waves
The suitable vibration frequency for acoustic toothbrushes is between 166-666Hz (10000-370000 times/minute), and different frequencies of acoustic toothbrushes achieve varying degrees of tooth cleaning effects. The cleaning effect of acoustic toothbrushes is proportional to the frequency and amplitude of sound waves
Ultrasound is a type of sound wave with a frequency higher than 20000Hz, which has good directionality and strong penetration ability, but cannot be heard by the human ear. The high-frequency vibration of sound waves can cause the water in the mouth to form countless invisible, extremely small bubbles and cause them to burst, which generates enormous energy. Tooth tartar, dental plaque, dental calculus, and other substances can be destroyed by the energy generated by the cavitation effect and separated from the teeth, thereby achieving a dental cleaning effect. Because these small bubbles can penetrate into all subtle corners of the oral cavity, the cleaning range of ultrasonic tooth cleaning can cover various parts of the periodontal area.