After scaling, there is a possibility that the nerves may become sensitive and tingly when eating cold food. The reason is that after scaling, the calculus and stains on the surface of the teeth are washed out, just like taking off a garment for the teeth. If the outside world is too cold, too hot, or the stimulation is strong, it will cause the nerve to be uncomfortable, but this situation will gradually improve in about a week. Patients who are more sensitive to cold, heat and irritation can use a desensitizing toothpaste, which can be applied to the surface of the teeth to relieve the pain of cold, heat and irritation. The irritation pain will only last 1-2 weeks after scaling. If you still have cold, hot and irritation pain after more than 2 weeks, you can go to the hospital in time.