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附着上皮的结构对牙周病发生和组织病理学有重要关系。以往,这种结合被认为是由暗带和明带的内侧基底层与上皮细胞的半桥粒组成的。但是。小林等(1976)通过观察孟加拉猴的内侧基底层另外一层,即明带下层,把内侧基底层和半桥粒命名为粘着的完整单位。呈锥形的这个结构附着于半桥粒周围的高电子密度层,由细丝将暗带、明带和高电子密度层贯穿着。这结构证明了牙釉质、无纤维性牙骨质和釉上皮的结合是存在
Epithelial attachment of the structure of periodontal disease and histopathology have an important relationship. In the past, this combination was thought to consist of the medial basal layer of the dark zone and the bright zone and the hemidesmosomes of epithelial cells. but. Kobayashi et al. (1976) named the medial basal lamina and the hemidesmulsion as a cohesive intact unit by observing the other layer of the medial basal lamina of the Bengal monkey, the lower bright belt. This conical structure attaches to the high electron density layer around the hemidesmosomes, penetrating dark bands, bright bands, and high electron density layers by filaments. This structure demonstrates the presence of enamel, a combination of non-fibrous cementum and enamel epithelium