63.下圖為咬耗(attrition)牙齒磨片(ground section)以..-阿摩線上測驗
63.下圖為咬耗(attrition)牙齒磨片(ground section)以透過性光(transmitted light)為光 源,所拍攝之組織學照片,圖片中箭頭所指之構造為下列何者?
(A)牙本前質(predentin)
(B)修補性牙本質(reparative dentin)
(C)牙本質內死道(dead tract in dentin)
(D)硬化牙本質(sclerotic dentin)