After scaling teeth fear of cold and fear of heat is usually a normal situation, can reduce stimulation, the use of desensitizing toothpaste to alleviate. 1. After scaling the teeth on the surface of the calculus and plaque are removed cleanly, resulting in the exposure of the tooth root caused by the teeth show fear of cold and fear of heat, during this period of time to reduce the stimulation of the teeth, to prevent eating too cold, too hot food, the use of lukewarm water brushing can be, will usually disappear on its own. 2. tooth sensitivity after scaling is a normal phenomenon, scaling is the use of ultrasonic, dental cleaning machine on the teeth of the calculus and plaque removal, will make the pressure changes in the dentin tubules, resulting in pulp stress response. Desensitizing toothpaste can be used to relieve the symptoms of cold and hot teeth. If the symptom of cold and hot teeth persists after scaling, it is recommended to go to the hospital stomatology department to check whether there is any defect in the teeth, and use medication under the guidance of the doctor to treat the problem.