目的：对于上前牙外伤后行牙冠延长术的患者，探讨其术后美容性修复方法的选择及其效果。
Objective Discussing the selection and effect after cosmetic prosthesis for the patients who perform crown lengthening after superior anterior tooth injury.
目的探讨牙冠延长术对前牙残根的保存修复效果的影响。
Objective to investigate the effects of surgical crown lengthening on conservative restoration in anterior residual root.
方法：对27例行牙冠延长术的患者进行常规的前牙美容修复，其中16例采用单纯桩冠修复，11例采用综合法进行美容修复。
Methods Among 27 cases who perform cosmetic prosthesis for anterior tooth after crown lengthening, there are 16 cases with post crown, 11 cases with comprehensive prosthesis.
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