Painful tooth sensitivity is usually due to dentin hypersensitivity, and proper rest can relieve the painful tooth sensitivity in some patients. For patients with painful tooth sensitivity, medication, restorative treatment and laser treatment can be used to treat the symptoms. 1. medication: dentin allergy can be treated by various forms of fluoride, such as using strontium chloride glycerin topical rubbing or strontium chloride solution, silver fluoride saturated small cotton balls to rub the affected area, which can play a role in relieving tooth sensitivity pain; 2. restorative treatment: dentin can be used to The dentin tubules can be closed with dentin bonding agent to block external stimuli. For the patients who repeatedly use medication is not effective, filling or artificial crown can be restored. If the tooth is sensitive and painful caused by caries, fillings can be taken; 3, laser treatment: through the thermal effect of laser to close the dentin tubules, so as to achieve the purpose of desensitization and cure; 4, other: the use of fluoride toothpaste to relieve tooth sensitivity and pain also has a certain effect, try to avoid too hot, too cold food. It should be noted that it is necessary to clarify whether the cause of dentin hypersensitivity is a local factor or a systemic factor, and then treat the cause.