Ionic release of dental cobalt-chromium based alloys


  • Asmaa Abdulrazak Hasan Department of Prosthetic Dental Technology, College of Health and Medical Technology, Middle Technical University, Iraq
  • Amaal Kadhim Mohammed Assistant Prof. Corresponding author at Department of Prosthetic Dental Technology, College of Health and Medical Technology, Middle Technical University, Baghdad, Iraq



new casting, recasting, selective laser melting, ion release, artificial saliva


Background: Since the 1980s, as the cost of noble metals has increased, more base metal alloys have been used in fixed and removable prostheses. Cobalt-chromium (Co-Cr) alloys are one of the most widely used base metal alloys in the prosthetic dental department and have several clinical uses. Co-Cr alloys are frequently used as having excellent biocompatibility, great strength, good resistance to tarnish, corrosion, and wear, as well as being heat-resistant and non-magnetic.

 Materials and Methods: For the ion release test, seventy specimens of a cobalt-chrome alloy disc with dimensions of 5 mm in diameter and 3 mm in thickness were created. They were divided into five groups, each of which had 14 specimens, based on the manufacturing method as follows: new cast alloy group; selective laser melting group (3D printer specimens); once recast alloy + old selective laser melting group; new cast + once recast alloy group; once recast alloy group.

Result: The outcomes showed that there were no

 statistically significant differences in ion release in any of the groups examined (P>0.05).

Conclusion: The production technique and alloy composition have a slight influence on ion release. A positive clinical response is anticipated, since it was found that every group met the ionic release criteria of the international standards.


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How to Cite

Abdulrazak Hasan , A. ., & Kadhim Mohammed, A. . (2023). Ionic release of dental cobalt-chromium based alloys. Mustansiria Dental Journal, 19(1), 80–91.