Schonfeld S E, Slavkin H C
Calcif Tissue Res. 1977 Dec 29;24(3):223-9. doi: 10.1007/BF02223320.
The continuously erupting rabbit incisor tooth is normally thought of as having an enamel covered "crown" on its labial surface and a cementum covered "root" on its lingual surface. We have examined both surfaces of continuously erupting rabbit incisor teeth taken from near term embryos by a variety of means, including transmission and scanning electron microscopy, biochemical fractionation, and immunohistochemistry. In all cases, we could detect no qualitative difference in the early extracellular matrices taken from the labial and lingual surfaces of the teeth. Both matrices were shown to be composed of dentin and enamel, although the thickness and geometry of the enamel matrix on the lingual surface was somewhat different from that on the labial surface.
持续生长的兔门牙通常被认为唇面有一层牙釉质覆盖的“牙冠”，舌面有一层牙骨质覆盖的“牙根”。我们通过多种方法，包括透射电子显微镜、扫描电子显微镜、生化分级分离和免疫组织化学，对取自近足月胚胎的持续生长的兔门牙的两个表面进行了检查。在所有情况下，我们均未检测到取自牙齿唇面和舌面的早期细胞外基质存在质的差异。尽管舌面牙釉质基质的厚度和几何形状与唇面略有不同，但两种基质均显示由牙本质和牙釉质组成。
