A、后牙缺隙的长度
B、前牙的唇面长度
C、后牙缺隙的<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/7648689b-deab-4837-bf01-10caab85db12.jpg" width="13" height="16" /> 龈距
D、后牙缺隙的长度和前牙的唇面长度
E、后牙缺隙的<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/7648689b-deab-4837-bf01-10caab85db12.jpg" width="13" height="16" /> 龈距和前牙的唇面长度