Crispy tooth pain may be caused by calcium deficiency, pulp necrosis, tooth splitting, etc. Patients should consult a doctor in time to clarify the cause of the disease and then carry out appropriate treatment. 1. Calcium deficiency: Calcium deficiency will cause insufficient calcification of the teeth, resulting in shortness of tooth pain, the patient will also have twitching limbs, irritability and other symptoms, can be treated with vitamin D, calcium carbonate. 2. Pulp necrosis: the pain of crispy teeth may also be caused by pulp necrosis due to inflammatory lesions in the pulp, the pain will be aggravated at night, and can be treated by root canal surgery. 3. Fractured teeth: If you fall and hit your teeth, or if you have a toothache after eating hard food, you should consider that it is caused by a fractured tooth, and you should consult a doctor in time. The above medications and treatments should be administered under a doctor’s supervision.