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病人,男45岁,因上唇外伤就诊,全门牙列式:11.13,14.15,16,17,2l,22.23,24,25,26,27,31,32,33,34,35,36.37.41,42,43,44,45,46,47。11牙冠宽度为1.5cm,长为1.1cm,12缺如.21牙冠宽度为0.9cm、长为1.1cm,