Some consequences of repeated casting of Co-Cr dental alloy

Authors

  • Vesna M Maksimović Vinča, Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade
  • Milovan M Stoiljković Vinča, Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade
  • Aleksandra D Čairović School of Dental Medicine, University of Belgrade, Rankeova 4, 11000 Belgrade

DOI:

https://doi.org/10.2298/JSC151204080M

Keywords:

Co-base alloy, recasting, macro- and micro-hardness, artificial saliva, metallic ion release rate

Abstract

The effect of multiple recasting of commercial Co–Cr base dental alloy (Dentalite-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 uniformer as the number of recasting was increased whereby macro- and micro-hardness 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 °C 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.

Author Biographies

Vesna M Maksimović, Vinča, Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade

Department of Materials Science

Milovan M Stoiljković, Vinča, Institute of Nuclear Sciences, University of Belgrade, P.O. Box 522, 11001 Belgrade

Department of Physical Chemistry

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Published

2016-11-26

How to Cite

[1]
V. M. Maksimović, M. M. Stoiljković, and A. D. Čairović, “Some consequences of repeated casting of Co-Cr dental alloy”, J. Serb. Chem. Soc., vol. 81, no. 11, pp. 1307-1319, Nov. 2016.

Issue

Section

Metallic Materials and Metallurgy