Simulating porcelain firing effect on the structure, corrosion and mechanical properties of Co-Cr-Mo dental alloy fabricated by soft milling
[Abstract] This study aims at evaluating the effect of simulating porcelain firing on the microstructure, corrosion behavior and mechanical properties of a Co-Cr-Mo alloy fabricated by Metal Soft Milling (MSM). Two groups of Co-28Cr-5Mo specimens (25×20×3 mm) were prepared by MSM : The as-sintered (...
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| creator | Lekatou, Angeliki G. Emmanouilidou, Sevasti Dimitriadis, Konstantinos Baikousi, Maria Karakassides, Michael A. Agathopoulos, Simeon |
| description | [Abstract] This study aims at evaluating the effect of simulating porcelain firing on the microstructure, corrosion behavior and mechanical properties of a Co-Cr-Mo alloy fabricated by Metal Soft Milling (MSM). Two groups of Co-28Cr-5Mo specimens (25×20×3 mm) were prepared by MSM : The as-sintered (AS) specimens and the post-fired (PF) specimens that were subjected to 5 simulating porcelain firing cycles without applying the ceramic mass onto their surface. Phase identification by X-ray Diffraction (XRD), microstructure examination by optical microscopy and Scanning Electron Microscopy combined with Energy-Dispersive X-ray Spectroscopy (SEM/EDX), corrosion testing by cyclic polarization and chronoamperometry in simulated body fluid (SBF), the latter test accompanied by Cr3+ and Cr6+ detection in the electrolyte through the 1.5-diphenylcarbazide (DPC) method and UV/visible spectrophotometry, and mechanical testing by micro-/nano-indentation were conducted to evaluate the effect of the post-firing cycles on the properties of Co-Cr-Mo. The results were statistically analyzed by the t test (p |
| doi_str_mv | 10.1007/s10266-023-00849-2 |
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Two groups of Co-28Cr-5Mo specimens (25×20×3 mm) were prepared by MSM : The as-sintered (AS) specimens and the post-fired (PF) specimens that were subjected to 5 simulating porcelain firing cycles without applying the ceramic mass onto their surface. Phase identification by X-ray Diffraction (XRD), microstructure examination by optical microscopy and Scanning Electron Microscopy combined with Energy-Dispersive X-ray Spectroscopy (SEM/EDX), corrosion testing by cyclic polarization and chronoamperometry in simulated body fluid (SBF), the latter test accompanied by Cr3+ and Cr6+ detection in the electrolyte through the 1.5-diphenylcarbazide (DPC) method and UV/visible spectrophotometry, and mechanical testing by micro-/nano-indentation were conducted to evaluate the effect of the post-firing cycles on the properties of Co-Cr-Mo. The results were statistically analyzed by the t test (p<0.05 : statistically significant). All specimens had a mixed γ-fcc and ε-hcp cobalt-based microstructure with a dispersion of pores filled with SiO2 and a fine M23C6 intergranular presence. PF led to an increase in the ε-Co content and slight grain coarsening. Both AS and PF alloys showed high resistance to general and localized corrosion, whereas neither Cr6+ nor Cr3+ were detected during the passivity-breakdown stage. PF improved the mechanical properties of the AS-alloy, especially the indentation modulus and true hardness (statistically significant differences : p=0.0009 and 0.006, respectively). MSM and MSM/simulating-porcelain firing have been proven trustworthy fabrication methods of Co-Cr-Mo substrates for metal-ceramic prostheses. Moreover, the post-firing cycles improve the mechanical behavior of Co-Cr-Mo, which is vital under the dynamically changing loads in the oral cavity, whereas they do not degrade the corrosion performance.</description><identifier>ISSN: 1618-1247</identifier><identifier>EISSN: 1618-1255</identifier><identifier>DOI: 10.1007/s10266-023-00849-2</identifier><identifier>PMID: 37642767</identifier><language>eng</language><publisher>Singapore: The Society of the Nippon Dental University</publisher><subject>Alloys ; Chromium ; Cobalt ; Corrosion ; Dental restorative materials ; Dentistry ; Light microscopy ; Mechanical properties ; Medicine ; Microscopy ; Oral and Maxillofacial Surgery ; Oral cavity ; Original ; Original Article ; Porcelain ; Prosthetics ; Scanning electron microscopy ; Silicon dioxide ; Spectrophotometry ; Statistical analysis ; X-ray diffraction ; X-ray spectroscopy</subject><ispartof>Odontology, 2024-04, Vol.112 (2), p.372-389</ispartof><rights>The Author(s) 2023</rights><rights>2023. The Author(s).</rights><rights>The Author(s) 2023. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c539t-ea7bee2c523016f80fb12998dac9f57fd938128615ede35adab9b4b457a79a33</citedby><cites>FETCH-LOGICAL-c539t-ea7bee2c523016f80fb12998dac9f57fd938128615ede35adab9b4b457a79a33</cites><orcidid>0000-0002-9869-8739</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s10266-023-00849-2$$EPDF$$P50$$Gspringer$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s10266-023-00849-2$$EHTML$$P50$$Gspringer$$Hfree_for_read</linktohtml><link.rule.ids>230,314,780,784,885,27924,27925,41488,42557,51319</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37642767$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lekatou, Angeliki G.</creatorcontrib><creatorcontrib>Emmanouilidou, Sevasti</creatorcontrib><creatorcontrib>Dimitriadis, Konstantinos</creatorcontrib><creatorcontrib>Baikousi, Maria</creatorcontrib><creatorcontrib>Karakassides, Michael A.</creatorcontrib><creatorcontrib>Agathopoulos, Simeon</creatorcontrib><creatorcontrib>Department of Biomedical Sciences</creatorcontrib><creatorcontrib>University of West Attica</creatorcontrib><creatorcontrib>School of Engineering</creatorcontrib><creatorcontrib>Division of Dental Technology</creatorcontrib><creatorcontrib>University Research Center of Ioannina (URCI</creatorcontrib><creatorcontrib>Department of Materials Science and Engineering</creatorcontrib><creatorcontrib>University of Ioannina</creatorcontrib><creatorcontrib>Institute of Materials Science and Computing</creatorcontrib><title>Simulating porcelain firing effect on the structure, corrosion and mechanical properties of Co-Cr-Mo dental alloy fabricated by soft milling</title><title>Odontology</title><addtitle>Odontology</addtitle><addtitle>Odontology</addtitle><description>[Abstract] This study aims at evaluating the effect of simulating porcelain firing on the microstructure, corrosion behavior and mechanical properties of a Co-Cr-Mo alloy fabricated by Metal Soft Milling (MSM). Two groups of Co-28Cr-5Mo specimens (25×20×3 mm) were prepared by MSM : The as-sintered (AS) specimens and the post-fired (PF) specimens that were subjected to 5 simulating porcelain firing cycles without applying the ceramic mass onto their surface. Phase identification by X-ray Diffraction (XRD), microstructure examination by optical microscopy and Scanning Electron Microscopy combined with Energy-Dispersive X-ray Spectroscopy (SEM/EDX), corrosion testing by cyclic polarization and chronoamperometry in simulated body fluid (SBF), the latter test accompanied by Cr3+ and Cr6+ detection in the electrolyte through the 1.5-diphenylcarbazide (DPC) method and UV/visible spectrophotometry, and mechanical testing by micro-/nano-indentation were conducted to evaluate the effect of the post-firing cycles on the properties of Co-Cr-Mo. The results were statistically analyzed by the t test (p<0.05 : statistically significant). All specimens had a mixed γ-fcc and ε-hcp cobalt-based microstructure with a dispersion of pores filled with SiO2 and a fine M23C6 intergranular presence. PF led to an increase in the ε-Co content and slight grain coarsening. Both AS and PF alloys showed high resistance to general and localized corrosion, whereas neither Cr6+ nor Cr3+ were detected during the passivity-breakdown stage. PF improved the mechanical properties of the AS-alloy, especially the indentation modulus and true hardness (statistically significant differences : p=0.0009 and 0.006, respectively). MSM and MSM/simulating-porcelain firing have been proven trustworthy fabrication methods of Co-Cr-Mo substrates for metal-ceramic prostheses. Moreover, the post-firing cycles improve the mechanical behavior of Co-Cr-Mo, which is vital under the dynamically changing loads in the oral cavity, whereas they do not degrade the corrosion performance.</description><subject>Alloys</subject><subject>Chromium</subject><subject>Cobalt</subject><subject>Corrosion</subject><subject>Dental restorative materials</subject><subject>Dentistry</subject><subject>Light microscopy</subject><subject>Mechanical properties</subject><subject>Medicine</subject><subject>Microscopy</subject><subject>Oral and Maxillofacial Surgery</subject><subject>Oral cavity</subject><subject>Original</subject><subject>Original Article</subject><subject>Porcelain</subject><subject>Prosthetics</subject><subject>Scanning electron microscopy</subject><subject>Silicon dioxide</subject><subject>Spectrophotometry</subject><subject>Statistical analysis</subject><subject>X-ray diffraction</subject><subject>X-ray spectroscopy</subject><issn>1618-1247</issn><issn>1618-1255</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>C6C</sourceid><recordid>eNp9UU1v1DAQjRCIVqV_gAOyxIUDKf6IY_uE0ApKpSIO9G45znjXKLGD7SDtf-BH42XLFjhwmtHMe28-XtM8J_iKYCzeZIJp37eYshZj2amWPmrOSU9kSyjnj095J86ay5z9gDtKCBaEP23OmOg7Knpx3vz44ud1MsWHLVpisjAZH5Dz6VAA58AWFAMqO0C5pNWWNcFrZGNKMfvaMGFEM9idCd6aCS0pLpCKh4yiQ5vYblL7KaIRQqldM01xj5wZUgUXGNGwRzm6gmY_TXXgs-aJM1OGy_t40dx9eH-3-djefr6-2by7bS1nqrRgxABALacMk95J7AZClZKjscpx4UbFJKGyJxxGYNyMZlBDN3RcGKEMYxfN26Pssg4zjLYul8ykl-Rnk_Y6Gq__7gS_09v4XROs6m8FqQqv7hVS_LZCLnr2uf5uMgHimjWVXCqFhZQV-vIf6Ne4plDP01TxTvZC0cNK9Iiy9a85gTttQ7A--K2Pfuvqt_7lt6aV9OLPO06U3-5WADsC8nLwE9LD7P_KXh9ZVfNgagzVG3ig2i2JYwxFU0w7jQmpsZKrCBM1YVJ1Hca1zn4CCn3PQg</recordid><startdate>20240401</startdate><enddate>20240401</enddate><creator>Lekatou, Angeliki G.</creator><creator>Emmanouilidou, Sevasti</creator><creator>Dimitriadis, Konstantinos</creator><creator>Baikousi, Maria</creator><creator>Karakassides, Michael A.</creator><creator>Agathopoulos, Simeon</creator><general>The Society of the Nippon Dental University</general><general>Springer Nature Singapore</general><general>Springer Nature B.V</general><scope>C6C</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QP</scope><scope>K9.</scope><scope>7X8</scope><scope>5PM</scope><orcidid>https://orcid.org/0000-0002-9869-8739</orcidid></search><sort><creationdate>20240401</creationdate><title>Simulating porcelain firing effect on the structure, corrosion and mechanical properties of Co-Cr-Mo dental alloy fabricated by soft milling</title><author>Lekatou, Angeliki G. ; Emmanouilidou, Sevasti ; Dimitriadis, Konstantinos ; Baikousi, Maria ; Karakassides, Michael A. ; Agathopoulos, Simeon</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c539t-ea7bee2c523016f80fb12998dac9f57fd938128615ede35adab9b4b457a79a33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Alloys</topic><topic>Chromium</topic><topic>Cobalt</topic><topic>Corrosion</topic><topic>Dental restorative materials</topic><topic>Dentistry</topic><topic>Light microscopy</topic><topic>Mechanical properties</topic><topic>Medicine</topic><topic>Microscopy</topic><topic>Oral and Maxillofacial Surgery</topic><topic>Oral cavity</topic><topic>Original</topic><topic>Original Article</topic><topic>Porcelain</topic><topic>Prosthetics</topic><topic>Scanning electron microscopy</topic><topic>Silicon dioxide</topic><topic>Spectrophotometry</topic><topic>Statistical analysis</topic><topic>X-ray diffraction</topic><topic>X-ray spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lekatou, Angeliki G.</creatorcontrib><creatorcontrib>Emmanouilidou, Sevasti</creatorcontrib><creatorcontrib>Dimitriadis, Konstantinos</creatorcontrib><creatorcontrib>Baikousi, Maria</creatorcontrib><creatorcontrib>Karakassides, Michael A.</creatorcontrib><creatorcontrib>Agathopoulos, Simeon</creatorcontrib><creatorcontrib>Department of Biomedical Sciences</creatorcontrib><creatorcontrib>University of West Attica</creatorcontrib><creatorcontrib>School of Engineering</creatorcontrib><creatorcontrib>Division of Dental Technology</creatorcontrib><creatorcontrib>University Research Center of Ioannina (URCI</creatorcontrib><creatorcontrib>Department of Materials Science and Engineering</creatorcontrib><creatorcontrib>University of Ioannina</creatorcontrib><creatorcontrib>Institute of Materials Science and Computing</creatorcontrib><collection>Springer Nature OA Free Journals</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Odontology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lekatou, Angeliki G.</au><au>Emmanouilidou, Sevasti</au><au>Dimitriadis, Konstantinos</au><au>Baikousi, Maria</au><au>Karakassides, Michael A.</au><au>Agathopoulos, Simeon</au><aucorp>Department of Biomedical Sciences</aucorp><aucorp>University of West Attica</aucorp><aucorp>School of Engineering</aucorp><aucorp>Division of Dental Technology</aucorp><aucorp>University Research Center of Ioannina (URCI</aucorp><aucorp>Department of Materials Science and Engineering</aucorp><aucorp>University of Ioannina</aucorp><aucorp>Institute of Materials Science and Computing</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Simulating porcelain firing effect on the structure, corrosion and mechanical properties of Co-Cr-Mo dental alloy fabricated by soft milling</atitle><jtitle>Odontology</jtitle><stitle>Odontology</stitle><addtitle>Odontology</addtitle><date>2024-04-01</date><risdate>2024</risdate><volume>112</volume><issue>2</issue><spage>372</spage><epage>389</epage><pages>372-389</pages><issn>1618-1247</issn><eissn>1618-1255</eissn><abstract>[Abstract] This study aims at evaluating the effect of simulating porcelain firing on the microstructure, corrosion behavior and mechanical properties of a Co-Cr-Mo alloy fabricated by Metal Soft Milling (MSM). Two groups of Co-28Cr-5Mo specimens (25×20×3 mm) were prepared by MSM : The as-sintered (AS) specimens and the post-fired (PF) specimens that were subjected to 5 simulating porcelain firing cycles without applying the ceramic mass onto their surface. Phase identification by X-ray Diffraction (XRD), microstructure examination by optical microscopy and Scanning Electron Microscopy combined with Energy-Dispersive X-ray Spectroscopy (SEM/EDX), corrosion testing by cyclic polarization and chronoamperometry in simulated body fluid (SBF), the latter test accompanied by Cr3+ and Cr6+ detection in the electrolyte through the 1.5-diphenylcarbazide (DPC) method and UV/visible spectrophotometry, and mechanical testing by micro-/nano-indentation were conducted to evaluate the effect of the post-firing cycles on the properties of Co-Cr-Mo. The results were statistically analyzed by the t test (p<0.05 : statistically significant). All specimens had a mixed γ-fcc and ε-hcp cobalt-based microstructure with a dispersion of pores filled with SiO2 and a fine M23C6 intergranular presence. PF led to an increase in the ε-Co content and slight grain coarsening. Both AS and PF alloys showed high resistance to general and localized corrosion, whereas neither Cr6+ nor Cr3+ were detected during the passivity-breakdown stage. PF improved the mechanical properties of the AS-alloy, especially the indentation modulus and true hardness (statistically significant differences : p=0.0009 and 0.006, respectively). MSM and MSM/simulating-porcelain firing have been proven trustworthy fabrication methods of Co-Cr-Mo substrates for metal-ceramic prostheses. Moreover, the post-firing cycles improve the mechanical behavior of Co-Cr-Mo, which is vital under the dynamically changing loads in the oral cavity, whereas they do not degrade the corrosion performance.</abstract><cop>Singapore</cop><pub>The Society of the Nippon Dental University</pub><pmid>37642767</pmid><doi>10.1007/s10266-023-00849-2</doi><tpages>18</tpages><orcidid>https://orcid.org/0000-0002-9869-8739</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Alloys Chromium Cobalt Corrosion Dental restorative materials Dentistry Light microscopy Mechanical properties Medicine Microscopy Oral and Maxillofacial Surgery Oral cavity Original Original Article Porcelain Prosthetics Scanning electron microscopy Silicon dioxide Spectrophotometry Statistical analysis X-ray diffraction X-ray spectroscopy |
| title | Simulating porcelain firing effect on the structure, corrosion and mechanical properties of Co-Cr-Mo dental alloy fabricated by soft milling |
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