Everyone wants to have white and even teeth, but for those of us who smoke and drink coffee and have yellowed teeth, we can only envy them.
In addition to his excellent football skills, Ronaldo has captured the hearts of millions of fans with his clean white teeth. It is reported that Ronaldo spent 700 euros per tooth, or about 4,700 yuan per tooth, in order to optimize the tooth, and he spent about 150,000 yuan on the tooth.
Although we can't have the teeth of stars, the most basic dental hygiene we do as ordinary people every day, and now we even start to brush our pets' teeth.
Tooth brush is oral cavity nurses indispensable, the tooth brush in the supermarket is multifarious do not know how to choose and buy, but you can be attracted by electric tooth brush, this says every minute can vibrate tens of thousands of times, have so magical really? Here, the author of Vsmile brings you to know electric toothbrushes.
The type of electric toothbrush can be divided into electric drive rotary type and high frequency acoustic wave vibration type.
Rotary toothbrush also known as the mechanical toothbrush or lazy toothbrush, brush head to the left and right side of the pendulum rotation, brush a tooth before moving to the other tooth. Is the use of internal micro motor drive gear, through the drive shaft drive brush head left and right rotation. It is suitable for adults because of its strength.
The type of Vibration, brush head do up and down vibration, moving on the teeth. Is the use of magnetic levitation motor high-speed vibration, electrified electromagnetic device to form a magnetic field, vibration device in the middle of the magnetic levitation to form high frequency vibration frequency, through the transmission shaft to 30,000-60,000 times/minute high frequency sound waves to the brush head, brush hair up and down vibration cleaning teeth.
There is also the professional oral hospitals and dental clinics will have ultrasonic handheld cleaning machine, ultrasonic transducer will be 1.6MHz ultrasonic into 96 million times/minute vibration frequency, currently only used for commercial cleaning teeth.
But a so-called ultrasonic toothbrush that is said to vibrate up to 96 million times per minute has yet to be tested by the market.
What is the manufacturing process for electric toothbrushes?
Electric toothbrush is made up of handle and replaceable brush head. Let's take a look at how to make replaceable brush head. First, the base of brush head with holes is injected with PP material.
The nylon bristles are then rammed into the holes of the brush head using a hair feeder.
To hold the bristles in place, a piece of wire is rammed into the inner hole along with the nylon wire to hold the bristles in place.
Nylon bristles have cylindrical ends and sharp edges, which will harm the oral cavity at high speed and fail to achieve the cleaning effect. Therefore, it is necessary to grind the bristles to make them softer and deeper to clean teeth.
Trim the bristles and cut them into a wavy or concave shape. These shapes allow for better contact between the brush and the teeth, increase friction, and make the teeth cleaner.
Now about electric toothbrush and manual toothbrush has been controversial, some think electric toothbrush is good, because it is a high-tech product, brush relatively clean. Also some people think that the ordinary toothbrush is better, because it can be used for a long time, relatively safe, in addition to the fear of electric toothbrush high-speed rotation vibration is easy to hurt the gums. In fact, no matter use traditional toothbrush or electric toothbrush, as long as it is qualified toothbrush, and use the correct and reasonable way, will not cause harm to the oral cavity.
The difference between manual and electric toothbrush toothbrush mainly cleaning effect, manual brushing your teeth, in accordance with the scientific method is able to clean teeth brushing your teeth, but the method is tedious, difficult to grasp, brushing time longer need 3 to 5 minutes, now few people in this fast-paced life can do it, if you brush your teeth right way, brushing time can't meet the requirements, the cleaning effect will sell at a discount greatly.