The length of time a tooth is used after piling varies from person to person. In some patients, the tooth will last a lifetime after piling, while in others, the tooth fractures quickly after piling. Clinically, with the appropriate indications, pile crown restorations are a reliable restoration method that generally lasts about ten years. Factors affecting the duration of the tooth after piling include: 1. The condition of the tooth itself: if it is a tooth with dead pulp, the tooth quality has been changed, and it is easy to fracture even after piling under stress, so it is difficult to guarantee the long-term effect. If the root condition is good, the service life is longer after piling; in addition, it is related to periodontal, if the tooth quality is good, but the periodontal condition is not good, the teeth will not last long after piling; 2, the doctor’s technology: if the operation is standardized and the selection of materials is reasonable, the general life is longer; 3, the patient’s usage habits: good biting habits, oral hygiene habits, all affect the service life.