The internal structure of an electric toothbrush mainly includes electric motors, batteries, circuit boards, and brush heads. Among all the components of an electric toothbrush, the SONIC motor is considered to be one of its core components. This article will explore the importance of the electric motor, compare different motor types, and conduct a detailed analysis based on data and related information. Working Principle of the Motor The electric motor is characterized by its high-frequency vibration technology, which can produce tens of thousands of brush head movements per minute. When the switch of the electric toothbrush is pressed, the battery will supply power to the electric motor, which drives the motor to rotate. When the motor rotates, it will drive the brush head to vibrate at a high frequency, so that the toothpaste and foam quickly penetrate into the gaps between the teeth and remove dirt and bacteria on the surface of the teeth. According to research, the vibration frequency of the SONIC motor is usually between 20,000 and 40,000 times. This high-speed vibration can effectively remove plaque and food residues on the surface of the teeth and improve the cleaning effect. Compared with traditional manual toothbrushes, electric toothbrushes using…