Tooth allergy pain that is dentin allergy, taking medications generally have no therapeutic effect on dentin allergy, the need for dentin desensitization treatment, commonly used desensitizing agents are fluoride, strontium chloride, etc., as follows. 1. Fluoride: 75% sodium fluoride glycerin can be used to repeatedly rub the sensitive area for 1~2 minutes, or use fluoride toothpaste containing sodium monofluorophosphate to act on the tooth surface by brushing. 2. Strontium chloride: It can be used as an additive in toothpaste, or can be applied locally with 75% strontium chloride glycerin or 25% strontium chloride liquid. All of the above medications should be used under the guidance of a doctor. If the symptoms of dentin hypersensitivity are severe or accompanied by other symptoms, it is recommended to visit a hospital for early professional treatment.