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Corrosion of dental amalgams in solutions of sodium chloride, sodium sulfide and ammonia
Author(s) -
PALAGHIAS GEORGIOS
Publication year - 1986
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/j.1600-0722.1986.tb01764.x
Subject(s) - mercury (programming language) , sodium sulfide , chemistry , ammonia , sodium , inorganic chemistry , aqueous solution , tin , copper , dissolution , zinc , chloride , sulfide , nuclear chemistry , corrosion , organic chemistry , computer science , programming language
Abstract — Specimens were prepared from three different dental amalgams and were immersed in 0.5% aqueous solutions of sodium sulfide, ammonia and sodium chloride. Every month and over a 6‐month experimental period the solutions were replaced with fresh electrolyte and were analyzed in an atomic absorption spectrophotometer with respect to their content in silver, mercury, copper, tin and zinc. In sulfide solutions large amounts of tin and mercury were released from the amalgams while none of the other elements could be detected. Copper, tin and mercury were mostly dissolved in ammonia solutions. An increased silver dissolution could also be observed. Zinc was the first element to be released in sodium chloride solutions. After a 4‐month immersion, considerable amounts of copper and mercury could also be found in the same solutions.