Wakita M, Hinrichsen K
Acta Anat (Basel). 1980;108(1):10-29. doi: 10.1159/000145277.
The molar tooth germs of newborn mice were isolated and the zone of ameloblast differentiation studied with the electron microscope. Special attention was paid to the changes that occur in the contacts such as desmosomes, tight junctions and close attachments associated with cell interdigitations between the inner enamel epithelium (IEE) and the stratum intermedium (SI) cells from the beginning of differentiation to the onset of enamel secretion. These changes are accompanied by variations in the width and configuration of the intercellular space separating the two cell layers. The terminal web persists from the beginning of cell elongation to the appearance of Tomes's process. Through its attachment to the zonulae adherentes, a terminal web-lateral junction system is created which stabilizes the differentiating ameloblasts. Also the SI cell layer is interpreted as a stabilizer for the IEE layer, particularly during the differentiation phase. This interpretation does not conflict with information that the SI cells transport materials required for enamel secretion.
分离新生小鼠的磨牙牙胚，并用电子显微镜研究成釉细胞分化区。特别关注从分化开始到釉质分泌开始期间，内釉上皮（IEE）和中间层（SI）细胞之间的连接（如桥粒、紧密连接和与细胞交错相关的紧密附着）所发生的变化。这些变化伴随着分隔两层细胞的细胞间隙宽度和形态的改变。终末网从细胞伸长开始一直持续到托姆斯突出现。通过其与黏着小带的附着，形成了终末网-侧连接系统，该系统稳定了分化中的成釉细胞。同样，SI细胞层被认为是IEE层的稳定器，特别是在分化阶段。这种解释与SI细胞运输釉质分泌所需物质的信息并不冲突。
