When a tooth has a cavity with clinical pain of food impaction, hot and cold irritation, and no spontaneous pain occurs, a filling, also known as a filling treatment, can be considered. The cost varies according to the filling material. At present, filling materials are mainly divided into two categories: glass ion and resin. The cost of domestic glass ion is about several tens of dollars, and the cost of imported glass ion is about 300 dollars, and the color of glass ion is very different from normal teeth, so glass ion is mainly used for filling posterior teeth. The biggest advantage of resin is that it is aesthetically pleasing and the color is very close to normal teeth, therefore, the cost is higher compared to glass ion, the cost of ordinary resin is 200-300 RMB, and the cost of better resin, such as nano resin should be 400-600 RMB.