Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert?
Generally speaking, ceramic materials are insensitive to corrosion, compared to most other materials. The present study questions the fact that ceramics are inert. Two major aspects are to be considered: the stability of zirconia over time, the stable tetragonal phase transforming into an unstable m...
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MDPI AG
2020-04-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/7/1697 |
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| author | Lucien Reclaru Lavinia Cosmina Ardelean Catalin Adrian Miu Alexandru Florian Grecu |
| author_facet | Lucien Reclaru Lavinia Cosmina Ardelean Catalin Adrian Miu Alexandru Florian Grecu |
| author_sort | Lucien Reclaru |
| collection | DOAJ |
| description | Generally speaking, ceramic materials are insensitive to corrosion, compared to most other materials. The present study questions the fact that ceramics are inert. Two major aspects are to be considered: the stability of zirconia over time, the stable tetragonal phase transforming into an unstable monoclinic form; the multitude of manufacturing methods, using various additives, sintering additives, oxides mixing, impurities, grain boundaries, and porosities which strongly influence the corrosion behavior and chemical degradation. In case of the investigated ceramics two paths were pursued:a) Dissolutions of ceramics in a mixture of HNO<sub>3</sub> 60% and HF 40% ultrapure medium.b) Release of cations from ceramics in various mediums:dental bioceramics in a 0.07 M HCl medium and a 0.1% NaF+0.1% KF medium; ceramics used in jewelry and watchmaking applications in a HCl 0.07 M medium and an artificial sweat medium. By inductively coupled plasma-optical emission spectrometry/mass spectrometry (ICP-OES/MS), traces of significant chemical elements were assessed: Hf, Cr, Y, As, Pb, Al, Fe, Cu, Se, Sb, La, Ni, Co, Sb, Ta, Te, Ba, Sm, Nb, Hg, Cd, Sr, As and Se. In ceramics used in jewelry and watchmaking applications the concentrations found vary from one ceramic to another, including toxic elements such as Te, Ba, As, Pb, Sm, Hg and Cd, therefore being technical zirconia ceramics which are not intended for the medical field. For ceramics used in jewelry and watchmaking applications a screening identification test for Ni, Co, Cu and Fe with strips of type Merckoquant<sup>®</sup> (Merck, Kenilworth, NJ, USA) was also performed. The obtained data prove that the zirconia ceramics in question are far from being “inert”. |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T20:39:30Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-168f562c89ad417c98d0952522cb8d082023-11-19T20:45:16ZengMDPI AGMaterials1996-19442020-04-01137169710.3390/ma13071697Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert?Lucien Reclaru0Lavinia Cosmina Ardelean1Catalin Adrian Miu2Alexandru Florian Grecu3Scientific Consultant Biomaterials and Medical Devices, 103 Paul-Vouga, 2074 Marin-Neuchâtel, SwitzerlandDepartment of Technology of Materials and Devices in Dental Medicine, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu sq, 300041 Timisoara, RomaniaDepartment of Orthopaedics-Traumatology, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2 Eftimie Murgu sq, 300041 Timisoara, RomaniaDepartment of Orthopaedics and Traumatology, University of Medicine and Pharmacy Craiova, 2 Petru Rares str, 200349 Craiova, RomaniaGenerally speaking, ceramic materials are insensitive to corrosion, compared to most other materials. The present study questions the fact that ceramics are inert. Two major aspects are to be considered: the stability of zirconia over time, the stable tetragonal phase transforming into an unstable monoclinic form; the multitude of manufacturing methods, using various additives, sintering additives, oxides mixing, impurities, grain boundaries, and porosities which strongly influence the corrosion behavior and chemical degradation. In case of the investigated ceramics two paths were pursued:a) Dissolutions of ceramics in a mixture of HNO<sub>3</sub> 60% and HF 40% ultrapure medium.b) Release of cations from ceramics in various mediums:dental bioceramics in a 0.07 M HCl medium and a 0.1% NaF+0.1% KF medium; ceramics used in jewelry and watchmaking applications in a HCl 0.07 M medium and an artificial sweat medium. By inductively coupled plasma-optical emission spectrometry/mass spectrometry (ICP-OES/MS), traces of significant chemical elements were assessed: Hf, Cr, Y, As, Pb, Al, Fe, Cu, Se, Sb, La, Ni, Co, Sb, Ta, Te, Ba, Sm, Nb, Hg, Cd, Sr, As and Se. In ceramics used in jewelry and watchmaking applications the concentrations found vary from one ceramic to another, including toxic elements such as Te, Ba, As, Pb, Sm, Hg and Cd, therefore being technical zirconia ceramics which are not intended for the medical field. For ceramics used in jewelry and watchmaking applications a screening identification test for Ni, Co, Cu and Fe with strips of type Merckoquant<sup>®</sup> (Merck, Kenilworth, NJ, USA) was also performed. The obtained data prove that the zirconia ceramics in question are far from being “inert”.https://www.mdpi.com/1996-1944/13/7/1697bioceramicszirconia ceramiccation extractiondental ceramicjewelry and watchmaking ceramicstoxicity |
| spellingShingle | Lucien Reclaru Lavinia Cosmina Ardelean Catalin Adrian Miu Alexandru Florian Grecu Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert? Materials bioceramics zirconia ceramic cation extraction dental ceramic jewelry and watchmaking ceramics toxicity |
| title | Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert? |
| title_full | Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert? |
| title_fullStr | Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert? |
| title_full_unstemmed | Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert? |
| title_short | Are Zirconia Bioceramics and Ceramics Intended to Come in Contact with Skin Inert? |
| title_sort | are zirconia bioceramics and ceramics intended to come in contact with skin inert |
| topic | bioceramics zirconia ceramic cation extraction dental ceramic jewelry and watchmaking ceramics toxicity |
| url | https://www.mdpi.com/1996-1944/13/7/1697 |
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