title: In vitro evaluation of the effect of a current bleaching agent on the electrochemical corrosion of dental alloys.
abstract: The nightguard bleaching of discoloured teeth is currently performed by using % 10 carbamide peroxide. While the material is effective on the bleaching of natural teeth, it may deteriorate crowns, bridges and amalgam restorations placed in the mouth. The purpose of the present study was to investigate the effect of 10% carbamide peroxide on the electrochemical corrosion of various dental casting alloys used for fixed partial dentures and dental amalgam. Tafel extrapolation curves were obtained by the corrosion cell that facilitated simulation of the oral environment and comparison of the corrosion rates of alloys and amalgam was accomplished. The results revealed that unpolished amalgam and nickel-chromium alloy samples had the most and noble alloys had the least corrosion rate.
authors.affiliation: Department of Prosthodontics, Faculty of Dentistry, Hacettepe University, Ankara, Turkey. senaycanay@hotmail.com
authors.forename: Senay
authors.initials: S
authors.lastname: Canay
authors.forename: Murat C
authors.initials: MC
authors.lastname: Cehreli
authors.forename: Semra
authors.initials: S
authors.lastname: Bilgiç
mesh_terms: D000077463:Carbamide Peroxide; D002858:Chromium Alloys; D003343:Corrosion; D003722:Dental Alloys / Q000737:chemistry*; D003723:Dental Amalgam / Q000737:chemistry; D004338:Drug Combinations; D004563:Electrochemistry; D006047:Gold Alloys; D006801:Humans; D009532:Nickel; D010545:Peroxides / Q000737:chemistry*; D014073:Tooth Bleaching / Q000009:adverse effects*; D014508:Urea / Q000031:analogs & derivatives / Q000737:chemistry*
chemical_list: D002858:Chromium Alloys; D003722:Dental Alloys; D004338:Drug Combinations; D006047:Gold Alloys; D010545:Peroxides; D000077463:Carbamide Peroxide; D009532:Nickel; D003723:Dental Amalgam; D014508:Urea