COMPARISON OF THE CORROSION PROPERTIES OF CoCrMo DENTAL ALLOYS IN ARTIFICIAL SALIVA
Keywords:
CoCrMo dental alloys, artificial saliva, additive technology, precision casting, corrosion
Abstract
CoCrMo alloys are known for their biocompatible properties, which, together with their favorable mechanical properties, mean they can be efficiently used in dentistry. With the development of selective laser melting for the fabrication of 3D printed objects, interest in the corrosion properties of this alloy has risen in the field of prosthodontics. In the study, CoCrMoW dental alloys were studied in artificial saliva at body temperature i.e. 37 °C. Different forms of CoCrMoW alloy were selected: a reference sample, i.e. original material as-received from the supplier, a casted sample acquired from an ordinary procedure in a dental laboratory, and two 3D printed samples made from CoCrMoW powder using the selective laser melting method (SLM). Electrochemical, spectroscopic and hardness measurements were conducted. It was shown that the reference and cast samples have similar microstructural and electrochemical properties, while the electrochemical properties of the 3D printed samples differ, most probably due to the effect of the higher micro porosity and chemical composition of the alloys.
References
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[21] S. H. Tuna, E. Karaca, İ. Aslan, G. Pekkan, N. Ö. Pekmez, Evaluation of corrosion resistance of Co-Cr alloys fabricated with different metal laser sintering systems. The journal of advanced prosthodontics, 12(3) (2020), 114–123, doi: 10.4047/jap.2020.12.3.114
[2] H. V. Cruz, J. C. M. Souza, M. Henriques and L. A. Rocha, Tribocorrosion and BioTribocorrosion in the Oral Environment: The Case of Dental Implants, In: Biomedical Tribology, Ed: J. Paulo Davim, Nova Science Publisher, 2011.
[3] D. McMinn, Birmingham Hip Resurfacing (BHR) history, development and clinical results, Midland Medical Technologies, Birmingham, U. K., 2000.
[4] B. Konieczny, A. Szczesio-Wlodarczyk, J. Sokolowski, K. Bociong, Challenges of Co-Cr Alloy Additive Manufacturing Methods in Dentistry-The Current State of Knowledge (Systematic Review), Materials, 13 (2020), 3524, doi:10.3390/ma13163524
[5] T. Dikova, Properties of Co-Cr Dental Alloys Fabricated Using Additive Technologies, Biomaterials in Regenerative Medicine Chapter, (2018), 141–159, doi:10.5772/intechopen.69718
[6] C. dos Santos, A.F. Habibe, B. G. Simba, J.F.C. Lins, B.X Freitas, C.A. Nunes, CoCrMo-base Alloys for Dental Applications Obtained by Selective laser melting (SLM) and CAD/CAM, Mat. Res., 23 (2020), doi: 10.1590/1980-5373-MR-2019-0599
[7] M. Zhang, Y. Yang, C. Song, Y. Bai, Z. Xiao, An investigation into the aging behavior of CoCrMo alloys fabricated by selective laser melting, J. Alloys Compounds, 750 (2018), 878–886, doi: 10.1016/j.jallcom.2018.04.054
[8] Y.Lu, S. Wu, Y. Gan, J.Li, C. Zhao, D. Zhuo, J. Lin, Investigation on the microstructure, mechanical property and corrosion behavior of the selective laser melted CoCrW alloy for dental application, Materials Science and Engineering, C 49 (2015), 517–525, doi: 10.1016/j.msec.2015.01.023
[9] F. Contu, B. Elsener, H. Bohni, Corrosion behaviour of CoCrMo implant alloy during fretting in bovine serum, Corrosion Sci., 47 (8) (2005), 1863–1875, doi:10.1016/j.corsci.2004.09.003
[10] Hodgson, A. W. E. et al, Passive and transpassive behaviour of CoCrMo in simulated biological solutions, Electrochim. Acta., 49 (2004), 2167–2178, doi:10.1016/j.electacta.2003.12.043
[11] A. I. Munoz, S, Mischler, Interactive effects of albumin and phosphate ions on the corrosion of CoCrMo implant alloy, J. Electrochem. Soc., 154 (2007), 562–670, doi:10.1149/1.2764238
[12] C. Valero Vidal, A. I. Munoz, Electrochemical characterisation of biomedical alloys for surgical implants in simulated body fluids, Corros. Sci., 50 (2008), 1954–1961, doi:10.1016/j.corsci.2008.04.002
[13] I. Milošev, The effect of biomolecules on the behavior of CoCrMo alloy in various simulated physiological solutions, Electrochim. Acta., 78 (2012), 259–273, doi:10.1016/j.electacta.2012.05.1
[14] G. S. Duffo, E. Quezada Castillo, Development of artificial saliva solution for studying the Corrosion Behavior of Dental Alloys, Corrosion., 60 (2004), 594–602, doi:10.1016/j.electacta.2012.05.1
[15] ASTM E2109-01 Test Methods For Determining Area Percentage Porosity In Thermal Sprayed Coatings, doi: 10.1520/E2109-01R14
[16] T. Puskar, D. Jevremovic, R. J. Williams, D. Eggbeer, D. Vukelic, I. Budak, A comparative analysis of the corrosive effect of artificial saliva of variable pH on DMLS and cast Co-Cr-Mo dental alloy, Materials, 6 (2014), 6486–6501, doi: 10.3390/ma7096486
[17] A. Takaichi, Suyalatu, T. Nakamoto, N. Joko, N. Nomura, Y. Tsutsumi, S. Migita, H. Doi, S. Kurosu, A. Chiba, N. Wakabayashi, Y.Igarashi, T. Hanawa, Microstructures and mechanical properties of Co-29Cr-6Mo alloy fabricated by selective laser melting process for dental applications, Journal of the Mechanical Behavior of Biomedical Materials, 21 (2013), 67–76, doi:10.1016/j.jmbbm.2013.01.021
[18] B. Vandenbroucke, J. P. Kruth, Selective laser melting of biocompatible metals for rapid manufacturing of medical parts, Rapid Prototyping Journal, 13(4) (2007), 196–203, doi:10.1108/13552540710776142
[19] E. A. Gulbranson, K.F. Andrew, F.A. Brassart, The oxidation of molybdenum from 550 °C to 1700°C”, Journal of the Electrochemical Society., 110 (1962), 952–959
[20] S.B. Lyon, 3.17 - Corrosion of Molybdenum and its Alloys, Editor(s): Bob Cottis, Michael Graham, Robert Lindsay, Stuart Lyon, Tony Richardson, David Scantlebury, Howard Stott, Shreir's Corrosion, Elsevier., (2010), 2157–2167, doi:10.1016/B978-044452787-5.00106-2
[21] S. H. Tuna, E. Karaca, İ. Aslan, G. Pekkan, N. Ö. Pekmez, Evaluation of corrosion resistance of Co-Cr alloys fabricated with different metal laser sintering systems. The journal of advanced prosthodontics, 12(3) (2020), 114–123, doi: 10.4047/jap.2020.12.3.114
Published
2021-12-10
How to Cite
1.
Kosec T, Bajt LebanM, Kurnik M, Kopač I. COMPARISON OF THE CORROSION PROPERTIES OF CoCrMo DENTAL ALLOYS IN ARTIFICIAL SALIVA. MatTech [Internet]. 2021Dec.10 [cited 2026Jul.16];55(6):819–824. Available from: https://mater-tehnol.si/index.php/MatTech/article/view/283
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