| Title: | Differences between 3-D printed and traditionally milled CoCr dental alloy from casted block in oral environment |
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| Authors: | ID Bajt Leban, Mirjam (Author)
ID Kurnik, Matej (Author)
ID Kopač, Igor (Author)
ID Klug Jovičević, Matic (Author)
ID Podgornik, Bojan (Author)
ID Kosec, Tadeja (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0013468623002530
 PDF - Presentation file, download (9,28 MB)
MD5: 2C1555FA42D3BE3C83EFEEC4DD714487
 DOCX - Supplement, download (18,19 KB)
MD5: 90123C98A98E2C306FAEB1077420EC0D
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  ZAG - Slovenian National Building and Civil Engineering Institute
 IMT - Institute of Metals and Technology
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| Abstract: | The aim of this study was to compare corrosion resistance and ion release in CoCr dental alloys with identical chemical compositions produced using different technologies (SLM – selective laser melting and milling from cast blocks) and heat treatment (SLM parts only). The corrosion properties were tested in artificial saliva, artificial saliva with fluoride ions, and artificial saliva with added lactic acid to simulate inflammations. The study included electrochemical tests, microstructural investigation and ion release tests in the three different environments for a total of 42 days. The best performance of CoCr as a result of potentiodynamic polarization was observed in the artificial saliva with added lactic acid, which is in contradiction with the highest ion release measured from all the materials tested and electrochemical impedance spectroscopy that showed a deterioration of the passive layer in an acidic environment. Microstructural investigation revealed that different phases precipitated by heat treatment trigger increased release of Mo and W ions. The printing method does not raise critically ion release from CoCr alloy, while the state of the surface greatly impacts the extent of the ion release. This study demonstrates the importance of an interdisciplinary approach to the study of corrosion and biocompatibility in dental alloys. |
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| Keywords: | CoCr dental alloy, selective laser melting, corrosion, ion release, artificial saliva |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Publication date: | 19.02.2023 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-11 |
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| Numbering: | [article no. 142066] |
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| PID: | 20.500.12556/DiRROS-16322  |
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| UDC: | 616.31 |
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| ISSN on article: | 1873-3859 |
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| DOI: | 10.1016/j.electacta.2023.142066 |
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| COBISS.SI-ID: | 142379779 |
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| Copyright: | © 2023 The Author(s). Published by Elsevier Ltd. |
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| Publication date in DiRROS: | 29.05.2023 |
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| Views: | 342 |
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| Downloads: | 288 |
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