Dentin hypersensitivity check method is relatively simple, as follows: 1, first of all, clinical examination, you must go to the hospital to confirm the diagnosis, to the hospital doctor to give clinical examination. Clinical examination, first of all, to exclude whether the tooth is caries, acid erosion, moderate abrasion, endodontics and so on. After ruling out these physical diseases, then carry out a specialized dentin examination; 2, dentin hypersensitivity, definitely because of dentin exposure. And the most important feature is that it is quite sensitive and very significant to mechanical stimuli. In the clinic, you can use the probe tip in the instrument tray to look for sensitive spots on the teeth, look for shallow disk-shaped areas of exposed dentin on the teeth, and use the probe tip to scratch left and right to see if the patient is particularly sensitive to mechanical stimuli. If it is very sensitive, a diagnosis of dentin hypersensitivity can be made.