Ultrastructural relationship of denture surfaces, plaque and oral mucosa in denture stomatitis.
Ultrastructural relationship of denture surfaces, plaque and oral mucosa in denture stomatitis.
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义齿性口炎义齿表面、牙菌斑和口腔黏膜超微结构的关系。
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
R. Frank
中科院分区：
文献类型：
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作者：
B. Walter;R. Frank
通过透射电子显微镜对六名患有典型假牙口腔炎的患者的甲基丙烯酸乙二醇酯包埋标本中的假牙菌斑进行了研究。发现不同类型的薄膜和厚膜应用于义齿表面。它们与主要由松散堆积的革兰氏阳性和革兰氏阴性细菌组成的牙菌斑接触。圆形、杆状和丝状微生物都很明显。在一些有限的区域中发现了具有正常超微结构的白色念珠菌群。当被细菌包围时，尤其是被玉米芯结构的细菌包围时，念珠菌表现出退化的细胞学迹象。在六分之一的案例中，观察到细菌通过狭窄而笔直的通道和充满微生物的地下空腔渗透到丙烯酸树脂义齿基托中。在腭粘膜最表层的细胞层中也发现了细菌渗透。
Denture plaque has been studied by transmission electron microscopy in glycolmethacrylate-embedded specimens from six patients presenting with typical denture stomatitis. Different types of thin and thick pellicles were found applied to the denture surface. These were in contact with a denture plaque made up predominantly of loosely packed Gram- positive and Gram- negative bacteria. Rounded, rod-shaped and filamentous micro-organisms were all evident. Group of Candida albicans with normal ultrastructure were noted in some limited zones. When surrounded by bacteria, especially by bacteria in corn-cob configurations the Candida showed cytological signs of degeneration. In one case out of six a bacterial penetration of the acrylic denture base was observed, through narrow and straight channels and subsurface cavities filled with micro-organisms. Bacterial penetration was also seen in the most superficial cell layers of the palatal mucous membrane.