The number of dental desensitization treatments depends on the condition, usually 1 desensitization treatment can see significant results. However, symptoms may recur and long-lasting results cannot be maintained. Dental desensitization involves applying a desensitizing medication to the surface of the tooth where the dentin is exposed to seal off the dentin tubules and reduce tooth hypersensitivity. After the desensitization treatment, the teeth will be gradually worn down by eating, and the teeth will be sensitive to hot, cold, sweet and sour foods, and then you need to go to the hospital for another desensitization treatment. In addition, during the desensitization treatment, you can use anti-allergy toothpaste to take care of your teeth under the guidance of your doctor.