Dispersalloy的体内腐蚀。

The in vivo corrosion of Dispersalloy.

作者信息

McTigue D, Brice C, Nanda C R, Sarkar N K

出版信息

J Oral Rehabil. 1984 Jul;11(4):351-9. doi: 10.1111/j.1365-2842.1984.tb00586.x.

DOI:10.1111/j.1365-2842.1984.tb00586.x

Abstract

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.

摘要

通过扫描电子显微镜和能量色散X射线分析对Dispersalloy汞合金修复体的体内腐蚀进行了表征。观察到CuSn的腐蚀导致修复体表面出现点蚀。富锡晶界的腐蚀导致γ1晶粒的晶间分离。通过腐蚀释放的锡与钙、磷、氯和氧反应，在修复体的外表面、牙齿-汞合金界面以及内部形成各种不溶性络合物。汞合金相邻边缘的脱矿质被认为是由腐蚀引起的。