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The mechanism of gingiva metallic pigmentations formation
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SYSNO ASEP 0328367 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The mechanism of gingiva metallic pigmentations formation Title Mechanismus tvorby metalických pigmentací v gingivě Author(s) Joska, L. (CZ)
Venclíková, Z. (CZ)
Poddaná, M. (CZ)
Benada, Oldřich (MBU-M) ORCID, RIDSource Title Clinical Oral Investigations - ISSN 1432-6981
Roč. 13, č. 1 (2009), s. 1-7Number of pages 7 s. Language eng - English Country DE - Germany Keywords pigmentation ; gingiva ; electrochemistry Subject RIV EC - Immunology R&D Projects NR9124 GA MZd - Ministry of Health (MZ) CEZ AV0Z50200510 - MBU-M (2005-2011) UT WOS 000263128800001 DOI 10.1007/s00784-008-0206-8 Annotation The occurrence of blue-grey areas in the soft tissue represents one of the problems affecting patients whose teeth have been restored using metallic materials. It is generally accepted that it is caused by mechanical penetration of a metallic material into the soft tissue. Several facts indicate that this mechanism is not general. The aim of the study was to determine an alternative mechanism of the origin of pigmentations, based on the corrosion interaction of metallic materials used in prosthodontics with the oral environment. The study was comprised of an analysis of pigment particles, determination of exposure conditions of metallic materials in vivo and laboratory evaluation of corrosion properties of the studied materials. Particles containing silver, sulphur and/or selenium could be seen in ultra-thin sections in the lamina propria gingivae Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2010
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