所屬欄目:牙體組織與解剖形態(tài)彩色圖譜
初級(jí)彎曲(primary curvature):牙本質(zhì)小管在牙尖部及根尖部的小管較直,而在牙頸部則彎曲呈“~”形,稱為初級(jí)彎曲,其近牙髓的一端較粗,越向表面越細(xì)且排列稀疏。Primary curvature:Dentinal tubules at the tip of the cusp and theapex are straight, while a ......(本文共 359 字 , 1 張圖) [閱讀本文] >>