Effect of pellicle on galvanic corrosion of amalgam.
Galvanic corrosion of amalgam, induced by contact with a type IV dental casting gold alloy, was determined under simulated oral conditions in an electrochemical cell. The effect of a pellicle layer formed by 1 h exposure to saliva in the oral cavity was determined. Pellicle on the amalgam had no effect on the maximum corrosion rate or the 2 h corrosion charge, whereas pellicle on the gold alloy substantially reduced both these parameters of the conventional low-copper amalgam; the corrosion of the high-copper amalgam was less and was not influenced by pellicle formation.
D003343:Corrosion; D003723:Dental Amalgam / Q000494:pharmacology*; D003741:Dental Deposits / Q000503:physiopathology*; D044622:Dental Pellicle; D004563:Electrochemistry; D004570:Electrogalvanism, Intraoral; D006047:Gold Alloys / Q000494:pharmacology; D066298:In Vitro Techniques; D013997:Time Factors
D006047:Gold Alloys; D003723:Dental Amalgam