PMID: 6129801Feb 1, 1982

Some considerations regarding the degradational interactions between mouth rinses and silver-soldered joints

American Journal of Orthodontics
H J Mueller

Abstract

For immersion tests with mouth rinses of Lavoris, Green Mint, and Cepacol, silver solders and silver-soldered stainless steel joints exhibited corrosive degradational reactions. Exposures to Lavoris resulted in the severest surface attack as followed by optical microscopy, scanning electron microscopy, and energy-dispersive x-ray microanalysis. This was confirmed by measurements of electrochemical potential and polarization. The cyclic voltammograms in Lavoris indicated a highly active corrosion potential of -0.94 v. sce, while potentials in Mint and Cepacol were only about -0.25 v. This activity is attributed to the presence of zinc chloride as the active agent in Lavoris, as well as the high zinc content (up to about 20 percent) and even higher zinc concentrations contained in copper-zinc microstructural phases of the silver solders and the ease for dezincification corrosive attack. Large increases in current above about -0.2 v. are observed with all rinse solutions as well as a prepared saliva substitute solution. The importance of toxicologic considerations of the agents released from silver solders and the interactions of corrosion with stress as factors in causing delayed failures of soldered joints are discussed. The pre...Continue Reading

References

Feb 1, 1979·Australian Dental Journal·O W Rogers
Nov 1, 1974·Journal of Dental Research·E P LautenschlagerR Wildes

Citations

Jul 19, 2002·Journal of Biomedical Materials Research·R P KusyJ Q Whitley
Apr 10, 2010·Dental Materials : Official Publication of the Academy of Dental Materials·Anthony JohnsonSamira K Al-Salehi
Jan 13, 2006·Dental Materials : Official Publication of the Academy of Dental Materials·James C SetcosNairn H F Wilson
Mar 28, 1998·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·C G Matasa
Apr 1, 1992·Acta Odontologica Scandinavica·S Torgersen, N R Gjerdet

Related Concepts

Corrosion
Electron Probe Microanalysis
Scanning Electron Microscopy
Mouthwash
Silver
Dental Soldering
Stainless Steel
Toothpaste
Physicochemical Phenomena

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