摘要
本文以上颌中切牙为例，按照正常的标准选择１０例作为观察对象，分别在室外自然光和室内灯光环境下进行观察并分别拍摄上下牙列自然闭合时的照片。通过分析比较，将唇面作横向和纵向划分，形成高光区、切端透明区、辅光区和动感区四个美容部分。并从临床角度分析了各区的解剖形态特点、美学意义及其与美容修复的关系。
Abstract According to the satanard of normal occlusion,the author choose 10 upper incisors as examples and studied under outdoor natural light.took the picture of upper and lower dentition in natural closing.After analysing,the author divided labial surface of front tooth into strong light part,incisor hyaling part,assilstant light part and move sinse part according to line and row.From the point of clinic medical,the author analysied anatomical shape characteristics,aesthetic meaning and its relationshap with cosmetological repair.
