After killing the nerve, the tooth usually needs to be restored with a pile crown, then the cost of the pile varies slightly depending on the location of the tooth and the number of piles. For anterior piles, the cost is usually around$600 for a single root canal; for posterior piles, the cost is around$800. If the patient needs a supplemental pile, an additional$200 will be charged for a supplemental root. In the process of pile crown restoration, the pile is very useful to support the tooth and prevent splitting and fracture. Usually if there is too little tooth left after treatment, a pile restoration is required so that the pile restoration can be followed by the crown completion.