![图2-7 牙的构造](https://imgs.zsbeike.com/imgs/J/J04020/j04020_tm.txt.5a9f4c.jpg)
 1.牙冠crownoftooth2.牙腔和牙髓dentalcavityanddentalpulp3.牙颈neckoftooth4.牙根管rootcanal5.牙根rootoftooth6.根尖孔apicalforamen7.血管神经束vascularandnervetract8.牙槽骨alveolarbone9.牙周膜periodontalmembrane10.牙骨质cement11.牙龈gingiva12.牙质dentine13.釉质enamel (共 226 字) [阅读本文] >>