When the incisor is broken and rotten, we need to check the specific scope of the broken incisor. If the root of the tooth is also decayed in addition to the crown, it is not easy to keep this tooth, so it is considered to extract the incisor directly and restore the incisor by the way of movable restoration or fixed restoration. However, most of the clinical cases are that the crown has large caries but the root is intact, because the root of the incisor is thick, the pulp cavity of the incisor is also relatively thick, and the restoration of the pulp cavity with the pile crown is the more common restoration method of the incisor. Firstly, root canal treatment is performed for the pulp, secondly, metal or fiber piles are placed in the root canal, and porcelain or all-ceramic crowns are made on the pile cores to restore the incisors, so that the incisors can serve the patients for a longer period of time.