Simulated Porcelain Firing of CO-CR Alloy
The aim of the present study is to assess the hardness, corrosion, and cytotoxicity of a commercially available cobalt-chromium (Co-Cr) alloy before and after simulated heat treatments at porcelain firing temperature. Five Co-Cr samples were fabricated using lost wax casting procedure. Heat treatmen...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Iran University of Science & Technology
2019-12-01
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| Series: | Iranian Journal of Materials Science and Engineering |
| Subjects: | |
| Online Access: | http://ijmse.iust.ac.ir/article-1-1275-en.html |
| _version_ | 1828453096886370304 |
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| author | V. Dave R. Kotian P. Madhyastha K. Boaz P. Rao B.P. Charitha |
| author_facet | V. Dave R. Kotian P. Madhyastha K. Boaz P. Rao B.P. Charitha |
| author_sort | V. Dave |
| collection | DOAJ |
| description | The aim of the present study is to assess the hardness, corrosion, and cytotoxicity of a commercially available cobalt-chromium (Co-Cr) alloy before and after simulated heat treatments at porcelain firing temperature. Five Co-Cr samples were fabricated using lost wax casting procedure. Heat treatments were carried out at 650°C, 750°C, 850°C, and 950°C. Vickers hardness was measured for as-cast and heat treated samples. The corrosion test was carried out separately in 0.1 N NaCl, 1% citric acid and artificial saliva at room temperature using potentiodynamic polarization technique. Gingival tissue biopsy of patients was taken and cultured to measure the cell viability by MTT colorimetric assay. Lowest hardness was observed at 650°C. 0.1 N NaCl and 1% citric acid corrosion medium showed a similar trend of corrosion rate. The least corrosion rate was found in artificial saliva. Firing temperature has an impact on the physical, chemical and biological properties of Co-Cr alloy in long-term clinical use. |
| first_indexed | 2024-12-11T00:02:29Z |
| format | Article |
| id | doaj.art-b850439a8fcb41efa20a2693110e8ea1 |
| institution | Directory Open Access Journal |
| issn | 1735-0808 2383-3882 |
| language | English |
| last_indexed | 2024-12-11T00:02:29Z |
| publishDate | 2019-12-01 |
| publisher | Iran University of Science & Technology |
| record_format | Article |
| series | Iranian Journal of Materials Science and Engineering |
| spelling | doaj.art-b850439a8fcb41efa20a2693110e8ea12022-12-22T01:28:25ZengIran University of Science & TechnologyIranian Journal of Materials Science and Engineering1735-08082383-38822019-12-011643642Simulated Porcelain Firing of CO-CR AlloyV. Dave0R. Kotian1P. Madhyastha2K. Boaz3P. Rao4B.P. Charitha5 Department of Dental Materials, Manipal College of Dental Sciences, Mangalore Department of Dental Materials, Manipal College of Dental Sciences, Mangalore Department of Dental Materials, Manipal College of Dental Sciences, Mangalore Department of Oral Pathology and Microbiology, Manipal College of Dental Sciences, Mangalore Department of Chemistry, Manipal Institute of Technology, Manipal School of Graduate Sciences, Jain University. The aim of the present study is to assess the hardness, corrosion, and cytotoxicity of a commercially available cobalt-chromium (Co-Cr) alloy before and after simulated heat treatments at porcelain firing temperature. Five Co-Cr samples were fabricated using lost wax casting procedure. Heat treatments were carried out at 650°C, 750°C, 850°C, and 950°C. Vickers hardness was measured for as-cast and heat treated samples. The corrosion test was carried out separately in 0.1 N NaCl, 1% citric acid and artificial saliva at room temperature using potentiodynamic polarization technique. Gingival tissue biopsy of patients was taken and cultured to measure the cell viability by MTT colorimetric assay. Lowest hardness was observed at 650°C. 0.1 N NaCl and 1% citric acid corrosion medium showed a similar trend of corrosion rate. The least corrosion rate was found in artificial saliva. Firing temperature has an impact on the physical, chemical and biological properties of Co-Cr alloy in long-term clinical use.http://ijmse.iust.ac.ir/article-1-1275-en.htmlcobalt-chromiumheat treatmentcorrosioncytotoxicityhardness |
| spellingShingle | V. Dave R. Kotian P. Madhyastha K. Boaz P. Rao B.P. Charitha Simulated Porcelain Firing of CO-CR Alloy Iranian Journal of Materials Science and Engineering cobalt-chromium heat treatment corrosion cytotoxicity hardness |
| title | Simulated Porcelain Firing of CO-CR Alloy |
| title_full | Simulated Porcelain Firing of CO-CR Alloy |
| title_fullStr | Simulated Porcelain Firing of CO-CR Alloy |
| title_full_unstemmed | Simulated Porcelain Firing of CO-CR Alloy |
| title_short | Simulated Porcelain Firing of CO-CR Alloy |
| title_sort | simulated porcelain firing of co cr alloy |
| topic | cobalt-chromium heat treatment corrosion cytotoxicity hardness |
| url | http://ijmse.iust.ac.ir/article-1-1275-en.html |
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