Rotten roots are very strong and painless, if the roots have the value of retention can not be removed, if the roots of the more serious inflammation and other reasons can not be retained, it is recommended that the extraction. Rotten tooth root is very strong and painless to the hospital to take pictures to check the root situation, if the root is long can be retained in the upper part of the pile core crown is not recommended to extract, do root canal treatment after the pile core crown repair can be. If the radiographs found that there is heavy inflammation around the tooth root or the length of the root is not good, the root has been most of the caries, it is recommended to extract as soon as possible, to avoid the inflammation affects the neighboring teeth. Whether the rotten root needs to be extracted should be confirmed by oral examination and X-ray, it is recommended to go to the local hospital as soon as possible to avoid affecting the chewing function.