Minors with trauma to the anterior teeth involving the pulp and well-treated root canals often require pile-crown restorations to restore esthetics and function. When should a permanent pile-crown restoration be performed? Generally, textbooks state that this should only be done in adulthood. The reason is that this is when the tooth and bone development is basically complete. However, the long period of time in between is difficult for the child to tolerate and accept. The actual situation is that the pile-crown restoration can be divided into two parts: the pile restoration is mainly related to the root condition, and the permanent pile restoration should be carried out after the root development is completed (or the apical development has stopped, but the root can still be preserved); the crown is related to the root and periodontal tissue, and theoretically it should be carried out after adulthood, so the period is mainly The temporary nail crown (plastic crown) is the main source of maintenance. The problem with plastic crowns is that they are not strong enough and often last only 1-2 years before they need to be replaced; they are also more irritating to the periodontal tissues; and the biggest pitfall is that they may lead to overgrowth of the opposing teeth, resulting in insufficient space for future permanent restorations. Therefore, if economic considerations are not taken into account, it is possible to restore a permanent crown restoration after the permanent core restoration is completed when the child is a minor, i.e., a permanent restoration can be used as a temporary restoration, which has the following advantages: aesthetics, high strength, low impact on the periodontium, no overgrowth of the opposing teeth, and little chance of a follow-up visit in the middle of the problem. The disadvantages are: the gingival position changes in adulthood, often requiring restoration, and the cost is higher than using plastic nail crowns.