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目的：通过视觉评价椅旁CEREC?计算机辅助设计（computer aideddesign，CAD）的镜像（mirror－image， MI）和生物再造（biogeneric reconstruction，BR）模式以及人工堆蜡（Wax－ups，WU）修复的上前牙全瓷冠虚拟图形的相似性。方法：随机选择牙列完整，上中切牙大小形态对称，其邻牙、对侧同名牙及咬合关系正常的患者30例。采集印模，记录咬合关系，翻制3副石膏模型。在模型上的上颌前牙行全瓷冠牙体预备并扫描。通过CEREC?v4．2的MI和BR模式形成虚拟修复体图形。完成预备体的蜡型和扫描。视觉评价修复体虚拟图形与对侧同名牙的形态差异。通过Wilcoxon秩和检验比较MI、BR和WU三组图形的差异（检验水平α＝0．05）。结果：MI组与WU组的得分高于BR组（P＜0．05），但MI组与WU组之间的差异无统计学意义（P＞0．05）。结论：CAD镜像模式和人工堆蜡对于重建前牙美学形态都是可行的方法，但前者较后者更高效一些。“,”Objective:The aim of this study was tocomparesimilarity of virtual image of the restoration maxillary in-cisor with all ceramic crown by CEREC?CAD mirror-image (MI) model and biogenericreconstruction (BR) model as well as manual wax-ups(WU). Method:Thirtyparticipants with intactdentitions,symmetric incisors andnormal occlusal morphol-ogy were includedrandomly. Impressions,biteregistrationsand three gypsum replicas were made.Preparationsof one of the max-illary incisor on modelfor all ceramic crowns were performed andscanned.The virtual imageof restorations were formed by us-ing the modes of MI and BR(CEREC?v4.2).WU of these preparationswere scanned as well.Differences were evaluated vi-suallyby matching the virtual images ofscan with the contralateraltooth morphologies. The discrepancieswere compared a-monggroups of MI,BR,andWU viaWilcoxon signed-rank test (α=0.05). Result:The groups of MI and WU got higher scoresthan that of BR(P 0.05). Conclusion:The CAD-MIand manual WUareall suitable techniquesin aestheticalrestoration of anterior teeth , but the former is more effi-cient than the latter.