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1.
J Biol Buccale ; 17(1): 21-5, 1989 Mar.
Article in French | MEDLINE | ID: mdl-2738050

ABSTRACT

X-ray microanalysis and electron diffraction made on granular metallic deposits of the gingival lamina propria, inducing partial periodontal tattoos, demonstrated that these deposits consisted of crystalline particles combining silver, sulphur and selenium. The role of selenium precipitating of silver and other metals as well as its role in detoxication are discussed.


Subject(s)
Gingival Diseases/metabolism , Pigmentation Disorders/metabolism , Selenium/pharmacology , Chemical Precipitation , Crystallography , Cytoplasmic Granules/ultrastructure , Electron Probe Microanalysis , Gingiva/ultrastructure , Gingival Diseases/pathology , Humans , Pigmentation Disorders/pathology , Selenium/analysis , Silver/analysis , Sulfur/analysis
9.
J Biol Buccale ; 13(1): 37-44, 1985 Mar.
Article in French | MEDLINE | ID: mdl-3857226

ABSTRACT

An ultrastructural study of hyperpigmented gingival fragments due to metallic deposits, originating from fixed or amalgam restorations, has shown the presence of metallic particles in the lamina propria either in extracellular locations between collagen fibrils, in basal lamina of gingival keratinocytes, endothelial cells and Schwann cells, or in intracellular locations in macrophages, fibroblasts or endothelial cells.


Subject(s)
Dental Restoration, Permanent , Gingiva/ultrastructure , Gingival Diseases/pathology , Pigmentation Disorders/pathology , Humans , Metals/analysis , Microscopy, Electron
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