在口腔科门诊,常有病人这样问医生:“我的牙齿遇冷遇热,或吃酸甜的食物时就又酸又痛,这是怎么回事呢?”这种症状俗称“倒牙”,在医学上叫做“牙本质过敏”,就是牙本质受到外界刺激而引起的过敏症状。 构成牙齿主体的是牙本质。牙本质内有神经纤维,一旦暴露,受到外界刺激则可引起酸痛感觉。在正常情况下,牙本质被覆盖于其外 In the dental clinic, patients often ask the doctor: “My teeth when the case of hot, or sour and sour when the acid and pain, what is going on?” This symptom is commonly known as “tooth” In medicine called “dentin hypersensitivity”, is the dentin by external stimuli caused by allergy symptoms. The main body of the tooth is dentin. There are nerve fibers in the dentin, once exposed, by external stimuli can cause soreness. Under normal circumstances, dentin is covered