After scaling, the dentin will be sensitive, causing the teeth to become sour and soft after eating hot, cold, sour and sweet foods, which will be gradually relieved after 3-5 days, so it is not recommended to eat too cold or too hot foods within 3-5 days after scaling, and it is recommended to brush with warm water. If the patient’s periodontal disease is already very serious before scaling treatment, the roots of the teeth are exposed a lot and the roots are surrounded by tartar and soft tartar, after scaling treatment all the tartar and plaque and other dirty things are removed, the roots of the teeth will be directly exposed in the mouth, in this case the symptoms of tooth sensitivity will be relatively serious, usually it takes 1-2 weeks to gradually relieve, during this period it is also recommended to During this period, it is also recommended to eat mainly warm and soft food, not too cold, too hot and too hard food.