The in vivo corrosion of Dispersalloy.
The in vivo corrosion of Dispersalloy amalgam restorations was characterized by scanning electron microscopy and energy dispersive X-ray analysis. It was observed that the corrosion of CuSn resulted in pitting on the restoration surface. Corrosion of Sn-rich grain boundaries led to intergranular separation of gamma 1 grains. The tin released through corrosion reacted with Ca, P, Cl and O forming various insoluble complexes on the external surface, at the tooth-amalgam interface, and within the interior of the restoration. The demineralization of the amalgam-adjacent margin has been attributed to corrosion.
D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003300:Copper; D003343:Corrosion; D003722:Dental Alloys; D003723:Dental Amalgam; D003793:Dental Restoration, Permanent; D004577:Electron Probe Microanalysis; D006801:Humans; D008855:Microscopy, Electron, Scanning; D013499:Surface Properties; D014001:Tin
D003722:Dental Alloys; C033470:Dispersalloy; D014001:Tin; D003300:Copper; D003723:Dental Amalgam