A、蜡冠的颊<img id="图片 6" src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/0eaa4d44-348d-4257-8fe9-fd9a6712e077.jpg" width="13" height="16" />1/3
B、蜡冠的舌<img src="http://admintk.100xuexi.com/UpLoadImage/2013-05-07/0eaa4d44-348d-4257-8fe9-fd9a6712e077.jpg" width="13" height="16" />1/3
C、蜡冠的远中1/3
D、蜡冠的近远中径的1/2
E、蜡冠正中下方