ヒト歯齦の表面構造に関する光学顕微鏡ならびに走査型電子顕微鏡的観察
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Correlations between changes in the structure of the gingival surface and those in the gingival tissues were investigated with samples obtained from 50 out-patients of Tokyo Dental College Infirmary by the use of an optical microscope and a scanning electron microscope, with results as follows: 1. There were microridge or pitted structure on the superficial layer of the gingiva. In the marginal gingiva microridge was observed and in the attached gingiva pitted structure was observed. 2. With the expansion of inflammatory changes in the lamina propria the gingival surface showed expansion of the microridged area and greater variation in the shape of the microridge. 3. By the scanning electron-microscopic observation it was clarified that the stippling is a gathering of depressions. 4. Scanning electron-microscopically the depressions in a stippling were morphologically classified into the fissure type and the round type and the latter was subdivided into the hollow type, bulging type and flat type. 5. An optical microscopically common structure was observed in the layer of epithelial cells immediately below the depression. 1) There were epithelial processes in the layer of epithelial cells immediately below the depression. 2) The degree of cornification in the superficial layer of the epithelial cells at the floor of the depression was lower than those in the surrounding tissues. 3) There were peculiar epithelial cells in the stratum spinosum in the epithelial process immediately below the depression. 6. The surface of the gingiva affected by inflammation also manifested depressions. Below the depression a tissue structure common to all depressions was observed by the optical microscope.
- 特定非営利活動法人日本歯周病学会の論文
- 1980-09-28
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