Sixty years on, the electric toothbrush bears a striking resemblance to that of Philippe-Guy Woog, the Swiss doctor who invented it in 1954.
In principle, there are two types of electric toothbrushes: rotary and vibrating. The principle of rotary toothbrush is simple, that is, the motor drives the circular brush head to rotate, which strengthens the friction effect while performing the ordinary brushing action. The rotary toothbrush is strong, the tooth surface cleaning is very clean, and the interdental cleaning is relatively weak, but the teeth wear is large, and it is not recommended for long-term use.
Vibrating toothbrushes are more complex and more expensive. The vibrating type of toothbrush has an electrically driven vibration motor inside, which can make the brush head produce a high-frequency swing perpendicular to the direction of the brush 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.
On the one hand, the high-frequency oscillations of the brush head are an efficient way to clean the teeth. On the other hand, more than 30,000 vibrations per minute cause the mixture of toothpaste and water in the mouth to create a large number of tiny bubbles. When the bubbles burst, the pressure created can penetrate deep into the teeth and clean the dirt.
There are three ways of moving the head of the electric toothbrush: one is the reciprocating linear motion of the head, the other is the rotating motion, and the other is the complete set of electric toothbrush with two brush heads. The bristles of the toothbrush head are made of soft plastic fiber, and the bristles are processed into balls, which will not damage the teeth and gums, and will not affect the brushing effect. Not only does it clean every tooth, but it also massages the gums. The toothbrush handle has a strong and weak switching mode switch, which can choose the speed of toothbrush head movement according to individual needs.
In the past few years, quite a few dentists have begun to recommend electric toothbrushes to their patients. Electric toothbrush is a tool for cleaning teeth. It is composed of rechargeable dry battery, micro DC motor, battery case, toothbrush head, metal plate and sleeve. As the DC motor power supply, the dry battery is installed in the battery box together with the DC motor. The battery box is provided with a manual switch to control the DC motor power supply. The rotating shaft of the DC motor extends out of the battery case. The toothbrush head and metal guard plate are arranged on the rotating shaft of the DC motor. The toothbrush head and metal guard plate have a cylinder outside. Electric toothbrush with various types of toothbrush head can be suitable for all kinds of users.
In addition to brushing your teeth, it can also be used to massage your gums. When brushing, it can be used manually and electrically, and it can be used in two directions. The gingiva can enhance the blood circulation by tapping and pressing the gingiva rhythmically. It is better to enhance the gingiva to absorb the drug with the use of drugs. It has good therapeutic and preventive effects on periodontitis, gingivitis, gingival bleeding and other common dental diseases. Using this brush can change the habit of brushing teeth laterally to brushing teeth lengthwise. When brushing by hand, the method is the same as with a regular toothbrush.
