对前牙间隙的审美,一直存在着种族差异和个人偏爱,如非洲某些国家视门牙间有空隙为美,在镶复前牙时还特意在两个上颌门牙(中线处)留半个牙宽的间隙。然而中国人的审美观认为前牙间隙,尤其是中缝间隙是人们的“视觉焦点”,不仪有碍准确发音,而且明显影响美观,因此都迫切要求做美容修复。前牙间隙的病因主要有:前牙扭转、异位萌出、唇向倾斜等错位造成的间隙;前牙间的多生牙拔除后留下的间隙;牙齿先天缺失或脱落后没有及时修复,致邻牙向缺隙侧倾斜移 There is always racial difference and personal preference for the aesthetic of the anterior gap. For example, some countries in Africa consider the gap between the incisors as the United States. When setting anterior anterior teeth, they also deliberately leave half teeth on the two maxillary incisors Wide gap. However, Chinese aesthetics thinks that the anterior gap, especially the gap, is the “visual focus” of people. Exactly affects the accurate pronunciation, and obviously affects the esthetic appearance. Therefore, it is urgently required to make a cosmetic restoration. The causes of the anterior gap are: the anterior tooth torsion, ectopic eruption, lip tilt and other dislocations caused by the gap; interdental interdental removal of the gap left after; removal of teeth or missing after the absence of timely repair, resulting in Orthodontic to the lack of lateral tilt shift