The cost of a filling needs to be determined by the material used for the filling and the method of filling. If it is a glass ionomer filling for milk teeth, it is from$50-200, because there are ordinary ones and imported ones. There is also resin material for filling, resin material is divided into products of different countries, so the cost of resin material is very uneven, and the price ranges from 150-900 RMB. If the filling is superficial, medium or deep caries, it can be filled directly. However, if it is a larger area of caries, it needs to be restored by using inlay, and the inlay is ranging from RMB 1500-3500. If the tooth is decayed to the extent that the nerve is exposed, root canal treatment is needed, and the charge is usually based on the number of root canals, one root canal is about 200-400 RMB. If the posterior tooth is decayed and the nerve is exposed, after the root canal treatment, it is recommended to do porcelain crown restoration, the porcelain crown is ranging from 400-7000 RMB, it is recommended to treat and choose according to your own situation.