As the weather gets hotter, people's demand for ice cream and cold drinks also increases. Cold food can relieve the heat and make the body and mind happy. However, some friends' teeth will feel sore and weak when they touch the ice, and even cause sharp pain. its disturbance. This kind of discomfort such as soreness, pain and so on after the teeth are stimulated to a certain extent, we call it dentin hypersensitivity.

 There are two main causes of tooth sensitivity：

  •  The first is the destruction of the integrity of the dental tissue. In layman's terms, people say that the teeth have become "thin", such as dental caries, wedge-shaped defects, night grinding, acid erosion and a series of diseases will lead to tooth tissue defects, so the internal dental nerve will be stimulated by the outside world (such as cold. , heat, sour, sweet, etc.) produce a sensitive reaction.
  •  The second is gingival recession. When the gums recede, the dentin beneath the gums is also gradually exposed. There are many small holes in the dentin, which lead to the dental nerve in the center of the tooth. Once the dentin is exposed, hot and cold foods or drinks will stimulate the nerves inside the tooth, causing tooth sensitivity and soreness.

 In addition, age, environmental climate change and mental stress can also cause tooth sensitivity.

 What to do with tooth sensitivity?

  1.  Regular dental check-ups find problems and treat them in a timely manner. If the teeth are found to have severe wear, caries, wedge-shaped defects, etc., they should go to the dental department for treatment in time.
  2.  Use desensitizing toothpaste. Brushing with desensitizing toothpaste is the easiest, most effective and least damaging method. When brushing your teeth, apply the paste to the sensitive areas for 3-5 minutes to ensure full contact with the teeth, and then brush your teeth.
  3.  Pay attention to oral hygiene. Learn the correct way to brush your teeth, do not brush your teeth horizontally to avoid wedge-shaped defects or gingival recession. A soft-bristled, small-head toothbrush is recommended.
  4.  Develop good chewing habits. When eating, chew food alternately with teeth on both sides, chew slowly, do not chew on one side, and eat less hard food.

 Do you know the little knowledge about tooth sensitivity?