Lambrichts I, Creemers J, van Steenberghe D
Department of Embryology, Histology and Anatomy, Faculty of Medicine, University Centre of Limburg, Belgium.
J Periodontal Res. 1992 May;27(3):191-6. doi: 10.1111/j.1600-0765.1992.tb01668.x.
The ultrastructure of sensory nerve endings in the human periodontal ligament from 43 extracted teeth was studied using serial sections. Three types of nerve endings were found: free nerve endings (FNE), Ruffini-like endings and lamellated corpuscles. Free nerve endings stem from unmyelinated or from myelinated nerve fibers. The endings contain neurotubuli, neurofilaments and vesicles. Ruffini-like receptors were mostly found in the apical part of the periodontal ligament. In these Ruffini-like receptors a particularly abundant concentration of mitochondria appears. In some cases desmosome-like junctions are present between neurite and ensheathing cell. Lamellated corpuscles were also found in the periodontal ligament. The lamellae are extremely endocytotic and are in close contact with each other.
利用连续切片研究了43颗拔除牙的人牙周膜中感觉神经末梢的超微结构。发现了三种神经末梢：游离神经末梢（FNE）、类鲁菲尼末梢和环层小体。游离神经末梢起源于无髓或有髓神经纤维。这些末梢含有神经微管、神经丝和小泡。类鲁菲尼感受器大多见于牙周膜的根尖部分。在这些类鲁菲尼感受器中，线粒体的浓度特别高。在某些情况下，神经突与被膜细胞之间存在类似桥粒的连接。在牙周膜中也发现了环层小体。这些板层具有极强的内吞作用，并且彼此紧密接触。
