Ion release from non precious dental alloys in the oral cavity

Materia

article

Elvar Quezada-Castillo¹  Wilder Aguilar-Castro¹  Bertha Quezada-Alván² 

[1] Universidad Nacional de Trujillo;Universidad Privada Antenor Orrego

关键词: Corrosion;    dental alloys;    artificial saliva;    corrosion products;    polarization curves;   

DOI  :  10.1590/1517-7076-RMAT-2022-48593

学科分类：工程和技术（综合）

来源: Universidade Federal do Rio de Janeiro * Coordenacao dos Programas de Pos-Graduacao de Engenharia

【 摘 要 】

Dental alloys in the oral cavity release ions by corrosive action of saliva, which are deposited in the lower part of the mouth, others diffuse through the gums and most of them pass to the gastrointestinal system. In the present work, nine dental alloys frequently used in our country by people with low resources (316L stainless steel, low and high copper silver amalgams, Co-Cr and Ni-Cr alloys, Cu and Ti-6Al-4V base alloys). Its open circuit corrosion potential was measured, its potentiodynamic polarization curves were plotted and corrosion products were analyzed by EDAX, finding Hg, Ag, Ni, Co, Cu, Zn and Si ions, which can affect the health of users, so it is recommended that dentists and dental technicians inform patients who suffer from hypersensitivity do not use alloys containing potentially allergic metals.

【 授权许可】

CC BY