How is the sound that tooth cannot hear iron to return a responsibility

summary

What's wrong with the sound of hard teeth? After listening to it, I feel uncomfortable. I don't know why. I went to the hospital to ask about it. I came here to explain the reason for this situation.

How is the sound that tooth cannot hear iron to return a responsibility

First: normal people can't stand it, because the sound is very stimulating to the human ear and brain. It doesn't need treatment, it's not a disease.

Second: it's a normal reaction that ordinary people will have, because when the metal spoon scrapes the bowl, there will be a kind of noise generated by mutual friction, which stimulates the brain nerve, and is used to using the blackboard eraser to scrape the blackboard to ask this question.

Third: scraping the table with your fingernails is the same thing. After your brain nerves are stimulated, you will feel abnormal changes in your heart rate for a period of time. This may also be because you have been stimulated, so you will feel uncomfortable every time you touch the metal surface with your fingernails. But as you grow up, this feeling will get worse and worse, To solve this problem, we must first overcome this invisible pressure psychologically, and then slowly eliminate this feeling!

matters needing attention

Teeth are very important organs of the human body. They don't taste good, and they can't eat what they like. Teeth are really painful, so you should pay attention to your teeth,