Anti-inflammatory medication is placed inside the tooth through a hole, and the tooth cannot be extracted until the inflammation in the tooth is under control; there is no standardized time for placing the medication. Root canal treatment is preferred for tooth decay and nerve infection, and the infection inside the root of the tooth is controlled by sealing the root canal with medication. If the root is not resorbed, the tooth can be preserved through root canal treatment, try not to extract the tooth. If the inflammation is more serious root has appeared pathological resorption, the tooth has no retention value, you can extract the tooth after the inflammation control, the specific time and their own immunity, generally speaking, the root sealing medicine two or three times the inflammation is basically controlled, the inflammation control can only be considered to extract the tooth, but also according to the specific situation of the tooth. Therefore, teeth that can be retained by root canal treatment are not recommended to be extracted. Generally the inflammation is basically controlled can be extracted, whether the tooth can be extracted need to visit the dentist to assess.