Microvascular patterns of the dental pulp of the upper major incisor of the rabbit.
Microvascular patterns of the dental pulp of the upper major incisor of the rabbit.
复制标题
兔子上门牙牙髓的微血管模式。
DOI：
10.2535/ofaj1936.63.5_255
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
R. T. Lin
中科院分区：
文献类型：
--
作者：
S. Okada;Y. Ohta;T. Tokioka;K. Kuramae;R. T. Lin
成牙本质细胞生命周期中的四个区域或阶段。分化中的牙乳头细胞区和前成牙本质细胞区的牙髓动脉立即向成牙本质细胞层扩展成毛细血管。毛细管形成多边形网格形状的网络。毛细血管壁似乎是连续的。在年轻的成牙本质细胞区，毛细血管呈波浪形，远离小动脉形成网状，网孔较小。连续型毛细血管改变为有孔。旧成牙本质细胞区的牙髓动脉在成牙本质细胞层下形成成牙本质细胞下神经丛。成牙本质细胞间形成毛环，毛环尖端延伸至终网。在线圈尖端附近经常观察到开窗。在短的成牙本质细胞区，动脉直接转变为毛细血管，以不规则的间隔发出较低的环，并再次出现连续性。髓静脉走行于动脉周围，向生长端相互交叉，汇合成较大的静脉，与牙槽壁接触。兔切牙牙髓的血管模式，通过四个区域的成牙本质细胞的生命周期明显改变成比例的形态变化的成牙本质细胞通过。
four regions or stages in the life cycle of the odontoblast. The pulpal arteries in the differentiating dental papilla cell region and the pre-odontoblastic region immediately spread into capillaries towards the odontoblastic layer. The capillaries formed a network in the shape of polygonal meshes. The capillary wall appeared to be continuous. In the young odontoblastic region, the capillaries undulated and built up a network which stood away from the arterioles, with smaller meshes. The continuous-type capillaries were altered to become fenestrated. The pulpal arteries in the old odontoblastic region formed the subodontoblastic plexus beneath the odontoblastic layer. Capillaries formed loops between the odontoblasts, and the tips of the loops extended to the terminal web. Fenestrations were very often observed near the tips of the loops. In the short odontoblastic region, the arteries directly altered to capillaries, which gave off lower loops at irregular intervals and again appeared to be continuous. Pulpal veins ran peripheral to the arteries anastomosing with one another towards the growing end, and confluenced into larger veins which were located in contact with the alveolar wall. The vascular patterns of the rabbit incisor pulp through the four regions in the life cycle of the odontoblasts apparently changed in proportion to the morphological changes of the odontoblasts through the .dentinogenesis.