Thomas H F, Carella P
Arch Oral Biol. 1984;29(8):641-6. doi: 10.1016/0003-9969(84)90135-3.
Areas of human dentine were examined first with the scanning electron microscope (SEM) and subsequently with the transmission electron microscope (TEM). Structures observed in dentinal tubules from outer dentine by SEM were identified by TEM as electron-dense structures lining the tubules and not as odontoblast processes. These structures, termed lamina limitans, correspond to the previously described inner hypomineralized lining of dentinal tubules.
首先用扫描电子显微镜（SEM）检查人类牙本质区域，随后用透射电子显微镜（TEM）进行检查。通过SEM在牙本质外层小管中观察到的结构，经TEM鉴定为衬于小管内的电子致密结构，而非成牙本质细胞突起。这些结构被称为限制板，与先前描述的牙本质小管内矿化不足的内层相对应。
