If a tooth repair is needed, the exact price depends on the extent of the bad tooth. If it is only simple decay, there are two ways to repair it: the first one is to apply the cementum mixed with powder to repair it. The price of this kind of cement is relatively cheap, usually around 100 RMB. The second one is to apply the light-curing resin, which is relatively expensive and costs about 300 RMB. If the tooth is broken to a large extent and has developed pulpitis and periapical inflammation, root canal treatment is needed before repairing the tooth, and the price of root canal treatment is related to many factors. Generally, in 3-4 tier cities, the price of 1 root canal for a tooth is around 500 RMB. After the root canal treatment, the tooth needs to be repaired, and after the repair, a crown restoration is needed. There are also many types of dental crowns, which require specific analysis of the problem. The price of a metal porcelain crown is generally around$1000, and the price of a full porcelain crown is around$3000.