Anastasi G, Cutroneo G, Magaudda L, Palmara V, Santoro G
Minerva Stomatol. 1989 Jan;38(1):1-10.
Morphometric reliefs on the enamel of the lower incisor of albino rats in correspondence with the prism compaction area during the first third of the ameloblastic modulation phase have been carried out. The reliefs were done on the longitudinal and median fracture plane and on the transversal fracture plane 8 mm from the cervical ansa. Measurements of the diameters of the honeycomb pits were carried out during the deposition phase, following removal of the ameloblastic coat. The data obtained were fed into an Apple Macintosh 512K/800 computer to obtain the geometric reconstruction of an isolated prism, the relations between each portion of the prism and the respective pits and a graphic example of the architectural organization of the enamel. It was shown that each prism consists of three distinct portion, just as there are three types of honeycomb pit. The external orifice of each pit is complementary to the interdigitant portion of the Tomes process, so the study of the pits may be used to evaluate the spatial orientation of the rods and not the morphology of their section. Cross-over between rows of contiguous rods occurs throughout the thickness of the internal enamel layer. The enamel possesses a particularly suitable structure for the transformation of surface type tangential forces into stresses or prevalently compression type.
对白化大鼠下切牙釉质在成釉细胞调制期前三分之一期间与棱柱压实区域相对应的形态测量浮雕进行了研究。这些浮雕是在纵向和正中骨折平面以及距颈袢8毫米处的横向骨折平面上进行的。在去除成釉细胞层后，在沉积阶段对蜂窝状小孔的直径进行了测量。将获得的数据输入苹果麦金塔512K/800计算机，以获得孤立棱柱的几何重建、棱柱各部分与相应小孔之间的关系以及釉质结构组织的图形示例。结果表明，每个棱柱由三个不同部分组成，就像有三种类型的蜂窝状小孔一样。每个小孔的外口与托姆斯突的指状交叉部分互补，因此对小孔的研究可用于评估釉柱的空间取向，而不是其截面的形态。相邻釉柱排之间的交叉发生在内部釉质层的整个厚度范围内。釉质具有一种特别合适的结构，可将表面型切向力转化为应力或主要是压缩型应力。
