Authors: Z. Venclíková; O. Benada * Authors‘ workplace: Výzkumný ústav stomatologický, Praha, ředitel MUDr. O. Krejsa, CSc. *Mikrobiologický ústav Akademie věd ČR, Praha, ředitel RNDr. J. Spížek, CSc. Published in: Česká stomatologie / Praktické zubní lékařství, ročník , 1999, 6, s. 230-234 Category:
Gingival biopsies obtained from six patients with bluish-grey pigmentationsdeveloped after application of metal prosthetic restorations were analysed by transmissionelectron microscopy and EDX microanalysis. In the lamina propria gingivae dense particleswere localized intracellularly in fibroblasts, macrophages and endothelial cells. Extracellularappearance of these particles among collagen fibres was seen in the matrix. In such particlessilver and sulphur eventually selenium were found most frequently. The silver content in thetissue was found in the correlation with its content in the prosthetic metal alloys. Theoccurrence of the macrophages and mast cells in the lamina propria gingivae point to theimmunological background of such metal pigmentations.
Key words: gingiva – pigmentation – metals – TEM, EDX-microanalysis
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