Some consequences of repeated casting of Co-Cr dental alloy | Zendy

Vesna Maksimović | Zendy; Milovan Stoiljković | Zendy; Aleksandra Čairović | Zendy

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Some consequences of repeated casting of Co-Cr dental alloy

Author(s) -

Vesna Maksimović,

Milovan Stoiljković,

Aleksandra Čairović

Publication year - 2016

Publication title -

journal of the serbian chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 45

eISSN - 1820-7421

pISSN - 0352-5139

DOI - 10.2298/jsc151204080m

Subject(s) - alloy , microstructure , saliva , indentation hardness , materials science , ion , metal , casting , metallurgy , chemistry , chemical engineering , analytical chemistry (journal) , chromatography , biochemistry , organic chemistry , engineering

The effect of multiple recasting of commercial Co-Cr base dental alloy (Dentalit-C) on its structural characteristics and ion release rates in artificial saliva has been investigated. The number of recasting was once, four and eight times. The as-cast microstructure became more uniform as the number of recasting was increased whereby macro and microhardness and electrical conductivity of the castings decreased. Metallic ion release in artificial saliva was monitored in vitro over the period of 22 weeks at the temperature of 37 0C and pH 2.3. Only Co and Fe were evidenced in artificial saliva and their release rates are measured. The ion release rates increases with time. The ion release rate of Fe was larger than Co. The ion release rates increases substantially by increasing the number of recasting. [Projekat Ministartsva nauke Republike Srbije, br 45012 i br. 172019

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