Is sonic electric toothbrush really "ultrasonic cleaning"?Which is better than the mechanical one?

Is sonic electric toothbrush really "ultrasonic cleaning"?Which is better than the mechanical one?

Many electric toothbrushes are referred to as "ultrasonic", which is an exaggerated statement, and is not really using ultrasonic brushing.

These electric toothbrushes vibrate 15,000-70,000 times per minute to create a certain amount of cavitation at the edge of the bristles, causing water and air to move together with the mixture at high speed, which has a stronger scouring effect on the tooth surface, stripping away food debris and dental plaque.Ultrasound, on the other hand, has a frequency of more than 120,000 times per minute, which is a long way off.

After looking at the head of the electric toothbrush, look at the bristles of the electric toothbrush. It is also a problem to see whether the bristles of the electric toothbrush are hard or soft.The bristles of the electric toothbrush are too hard and the cleaning "efficiency" is high, but it is easy to damage the teeth and gums.The softer the bristles of an electric toothbrush, the better for tooth protection, but it is not easy to clean the plaque that is tightly attached to the tooth surface.So, electric toothbrush choose big head or small head, electric toothbrush choose hard bristles or soft bristles also have a "egg pain" choice: electric toothbrush as far as possible to choose soft bristles, but also don't be too soft, how soft is the appropriate degree of softness?

If you feel as if you're being mercilessly whipped with an electric toothbrush, it must be hard and you need a soft one.Of course, in addition to the body to try "hair", there is another way to observe the tip of the electric toothbrush, relative to the flat head, pointed bristles, the mechanical damage of the round head bristles on the gums is smaller, so choose the electric toothbrush can choose a rounded tip.One drawback to this method is that you may need a magnifying glass to see the tip of the brush.So in the future, if you see someone with a magnifying glass in the electric toothbrush aisle of the supermarket, don't think they're crazy.

The American Dental Association (ADA) recommends that you need to replace an electric toothbrush head at least 3 to 4 months. This is because the bristles of the electric toothbrush will wear out and deform with use, which will reduce the effectiveness of brushing.In fact, it is not necessary to stick to the standard for 3 months. Some people brush their teeth especially hard, feeling like a pot brush. It is not a good habit to wear the electric toothbrush very much.So the standard of replacing an electric toothbrush is: first of all, we should follow the basic standard of replacing every 3 to 4 months.Secondly, if you find that the electric toothbrush bristles are out of shape, large area of bending or the color of the brush bristles become pale, then immediately change it, you do not change, electric toothbrush itself are fried hair.see the electric toothbrush head, big head or small head, this is a problem.Electric toothbrush brush head is bigger, the coverage area is large, brushing "efficiency" is high, but the edge of the teeth corner locust corner may not brush, the result is often brushed white brush.The smaller the electric toothbrush head, the finer the cleaning, and the higher the "quality" of the brushing, but it may have taken two to three minutes to sweep the mouth, and it turns out to take five minutes to brush, and doctors know that for most people, one minute may be too long.So the choice of the electric toothbrush head should follow a principle: try to choose a small head, but also not too small that the right small head is how small?Compare your teeth.