Studies on the Function of Junctional Epithelium and the Mechanism of Epithelial Attachment

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To investigate the function of the junctional epithelium and the mechanism of epithelial attachment, I chiefly observed a morphological feature of human teeth and gingiva by histological and immunohistochemical technique.A comparatively wide intercellular space was seen in junctional epithelium. It seemed that these intercellular space decreased mechanical pressure that the junctional epithelium receive while masticating. The epithelial cells that attach to the tooth surface have a lot of cell organelles and granular structures. Moreover, because a lot of infoldings of cell membrane and vesicles are observed near the cell membrane of the dentine side, it seems that these cells synthesize a certain kind of substance, and do absorption and the secretion vigorously. As for the hemidesmosome, basal lamina and the cell membrane of the epithelial cell that faced tooth, it was confirmed that the possibility to become a part of element that composed dental cuticle was high. Causing the expansion of the periodontal pocket by the disruption between junctional epithelial cells became clear in morphology