Piling after root canal treatment is a common clinical restoration, it has certain indications, usually used in teeth that need to be crowned, but the remaining dentin tissue is no longer able to withstand the stress of the crown, then it is necessary to pile on the root canal, and then glue the fabricated crown on the pile, so that the tooth root, the pile and the crown to become a whole again, and serve the patient for a longer period of time. However, if a tooth with a large amount of tooth stock is treated with root canal therapy, a layer of hard tooth tissue is simply removed from the tooth and crown, and then bonded with a crown restoration, there is no need for further staking, so whether or not staking is done depends on the amount of residual tooth tissue.