Usually there is no quick fix for sour teeth that can’t chew, patients with this symptom may be caused by periodontal disease, cryptic fracture, gum recession, etc. Patients can improve their condition through general treatment, medication, surgery, and so on. 1. Periodontal disease: Patients with periodontal disease should pay attention to oral hygiene, remove plaque, avoid eating stimulating foods, quit smoking and drinking, etc. Systematic periodontal treatment, such as scaling, scraping and root planing, can be carried out under the guidance of doctors. 2. Hidradenitis suppurativa: patients should pay attention to oral hygiene and brush their teeth correctly. For patients with less serious symptoms of cryptocleidosis, they can be covered with calcium hydroxide paste and temporarily sealed with glass ionomer, and then replaced with light-curing composite resin after 2 weeks without symptoms. For patients with serious cryptocleidosis, they can be treated with endodontic therapy and full-crown restoration, and the affected teeth can be extracted if necessary. 3. Gingival recession: For patients with mild symptoms may not be treated, usually pay attention to oral hygiene, in accordance with the correct way to brush teeth. For patients with severe gum recession that affects aesthetics, gingival surgery can be performed to cover the exposed root surfaces and improve the symptoms of tooth acidity. It is recommended that patients strictly follow the doctor’s instructions for medication, actively cooperate with the doctor’s treatment, pay attention to the observation of dental conditions in life, if the symptoms continue to worsen should be timely medical treatment.