It’s pineapple season, and Ms. Wang, who lives in Wuhan, loves sweet and sour pineapples, but recently, when her family was eating pineapples, she could only look at them with greed, why? She was persuaded by her family to come to our hospital and was told that she was suffering from a common clinical condition called dentin hypersensitivity. So what is dentin hypersensitivity? It is also known as dentin sensitivity, allergic dentin, commonly known as “back teeth” is the soreness of teeth caused by external stimuli, such as temperature (cold, hot), chemical substances (acid, sweet) and mechanical action (friction, biting hard objects). It is not an independent disease, but a symptom common to many kinds of dental diseases. Dental caries (worm teeth), wedge-shaped defect, tooth wear, hidden tooth fracture, gum atrophy leading to root exposure and other dental diseases can cause tooth dentin exposure, and the exposed dentin conducts external stimuli will lead to tooth allergy. According to authoritative data, 8-57% of adults in China are suffering from dentin sensitivity, and the peak age of onset is around 40 years old. Here, we remind you that if this allergy occurs only once or twice and disappears quickly, there is no need to worry about it. However, if the sensation of hypersensitivity persists in one or several teeth, it is necessary to suspect whether the tooth is cracked or decayed, etc., and you should consult your dentist. How to treat dentin hypersensitivity when it is found? 1.Determine the cause of the problem and treat the cause. If the dentin sensitivity is only caused by tooth wear and gum recession that exposes the tooth roots, it is recommended to use desensitizing toothpaste or rinse the mouth with fluoride solution. These special toothpastes or rinses contain certain ingredients that can fill the ducts in the dentin, thus eliminating the allergy. 2.Can go to hospital for desensitization treatment: the commonly used desensitization methods include fluoride desensitizers, resin-based desensitizers, etc., which can close the dentin tubules and obviously relieve the allergy symptoms. 3.If the affected tooth is caused by caries or heavy wedge-shaped defect, it is necessary to carry out filling and restoration treatment on the affected tooth. 4.For patients with serious condition, the above treatment measures cannot relieve the pain, or even have spontaneous pain, endodontic treatment is needed. 5, other aspects: in daily life should pay attention to brushing methods, use soft-bristled toothbrush, develop good and healthy habits, do not smoke, do not consume or drink too much stimulating food and drinks can reduce the incidence of dentin sensitivity.