Holland G R
Anat Rec. 1981 Aug;200(4):437-42. doi: 10.1002/ar.1092000406.
The incidence of multiple processes within the tubules of the cuspal dentin of the cat's canine has been measured by counting directly from ultrathin sections examined in the electron microscope. The incidence is highly variable. The greatest incidence was found 1 mm below the cuspal dentino enamel junction where up to 75% of tubules in some areas contain more than one process. On average 33.6% of the tubules at this level contain multiple processes. The incidence declines linearly toward the apex with virtually no multiple processes occurring at 4 mm below the tip dentino enamel junction or beyond. Half of the "second processes" contain either mitochondria and/or vesicles. They are restricted to predentin where many of them end and to inner calcified dentin. Their distribution is similar to that described for nerve fibers in other studies. None of the processes participated in specialized junctions.
通过直接对在电子显微镜下检查的超薄切片进行计数，已测量出猫犬齿尖部牙本质小管内多个突起的发生率。该发生率变化很大。在牙尖牙本质釉质界以下1毫米处发现发生率最高，在某些区域高达75%的小管含有不止一个突起。在此水平，平均33.6%的小管含有多个突起。发生率朝着根尖呈线性下降，在牙尖牙本质釉质界以下4毫米处及更远的地方几乎没有多个突起出现。一半的“第二个突起”含有线粒体和/或囊泡。它们局限于前期牙本质，其中许多在此终止，也存在于内层钙化牙本质中。它们的分布与其他研究中描述的神经纤维分布相似。没有一个突起参与特殊连接。
