ULTRASTRUCTURE OF REGENERATING JUNCTIONAL EPITHELIUM IN THE MONKEY
ULTRASTRUCTURE OF REGENERATING JUNCTIONAL EPITHELIUM IN THE MONKEY
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DOI：
10.1902/jop.1980.51.7.386
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发表时间：
1980-01-01
影响因子：
4.3
通讯作者：
SQUIER, CA
中科院分区：
文献类型：
--
作者：
BRAGA, AM;SQUIER, CA
牙龈切除后，接合上皮明显由口腔上皮改建而来，但关于残存的接合上皮再生潜力的信息很少。分别用内斜面技术或外斜面技术切除全部或部分原始交界上皮后，对猕猴上皮附着的重建进行了超微结构观察。在这两种情况下，从邻近的牙龈口腔上皮和残留的接合上皮形成的新的上皮附着似乎以邻近牙釉质交界处的细胞小巢的形式持续存在。牙龈创面上皮化迅速，仅在用外斜面技术去除部分交界上皮后5天内发生，而在交界上皮完全切除的创面上皮化10天。上皮化率的这种差异似乎主要与凝固物和细胞碎片的数量有关，内斜面技术后残留的更多的凝固物和细胞碎片倾向于延缓上皮的迁移和再附着。
After gingivectomy the junctional epithelium is apparently reformed from the oral epithelium, but there is little information on the regenerative potential of residual junctional epithelium. Reformation of the epithelial attachment in the [macaque] monkey was followed ultrastructurally after surgical removal of all or part of the original junctional epithelium by internal or external bevel techniques, respectively. In the 2 circumstances a new epithelial attachment developed from the adjacent gingival oral epithelium and residual junctional epithelium appeared to persist as small nests of cells adjacent to the cemento-enamel junction. Epithelialization of the gingival wound was rapid, occurring in as little as 5 days after the partial removal of the junctional epithelium by the external bevel technique and by 10 days in wounds in which the junctional epithelium was completely excised. This difference in the rate of epithelialization seemed to be primarily related to the quantity of coagulum and cell debris present, the greater amount remaining after the internal bevel technique tending to retard epithelial migration and reattachment.