所屬欄目:牙體組織與解剖形態(tài)彩色圖譜
橫紋(cross striations):為釉柱上有規(guī)律間隔的細線,橫紋之間的距離約為 4μm,相當于釉基質(zhì)每日形成的量。橫紋處礦化程度稍低,故當牙輕度脫礦時橫紋較明顯。Cross striations:Enamel rods have regularly spaced cross striations and the distance between the ......(本文共 424 字 , 1 張圖) [閱讀本文] >>