Under normal circumstances, patients with superficial and moderate dental caries will not experience significant pain symptoms after filling treatment. For patients with deep carious teeth, the pain symptoms caused by filling treatment may last for 3-5 days. Because for patients with shallow and medium caries, the decayed tissue does not involve the pulp nerve. For this kind of patients, only curing resin or other filling materials are needed to restore the appearance of the defective teeth, so there will not be painful symptoms after filling treatment. However, for patients with deep cavities, most of the cavities have already touched the pulp cavity and will lead to inflammatory diseases such as pulpitis and periapical inflammation. Such patients should consider receiving anti-inflammatory or root canal treatment first before filling treatment according to the actual disease condition. And there may be a symptomatic reaction of local pain in the mouth for 3 to 5 days after the procedure. After receiving the filling treatment, patients should choose liquid and soft food, and avoid cold, spicy, hard and other types of food to avoid aggravating the pain performance.