Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys
Background/Aim. Metal-ceramic bond strength and alloys' elastic modulus clearly determine the potential of alloy application, because the ceramic integrity during mastication depends on these two characteristics. The aim of this study was to evaluate metal-ceramic bond strength and elastic modu...
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Ministry of Defence of the Republic of Serbia, University of Defence, Belgrade
2007-01-01
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| Series: | Vojnosanitetski Pregled |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0042-8450/2007/0042-84500704241M.pdf |
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| author | Mirković Nemanja |
| author_facet | Mirković Nemanja |
| author_sort | Mirković Nemanja |
| collection | DOAJ |
| description | Background/Aim. Metal-ceramic bond strength and alloys' elastic modulus clearly determine the potential of alloy application, because the ceramic integrity during mastication depends on these two characteristics. The aim of this study was to evaluate metal-ceramic bond strength and elastic modulus of cobalt-chromium alloys in making porcelainfused- to-metal restorations, regarding the application of the most frequent nickel-chromium alloy. Methods. The research was performed as an experimental study. Six metalceramic samples were made from nickel-chromium alloy (Wiron 99) and cobalt-chromium alloy (Wirobond C), according to the manufactures manuals and instructions from ISO 9693: 1996. Three-point bending test was performed up to the ceramic fracture. The fracture load was measured on an universal testing machine (Zwick, type 1464), with cross-head speed of 0,05mm/min. Results. The results of this study confirmed the significant differences between the metal-ceramic bond strength (p < 0.01) and elastic modulus (p < 0.001) of nickel-chromium and cobalt-chromium alloys, where cobalt-chromium alloys showed higher values for both tested parameters. Conclusion. Cobalt-chromium metal-ceramic alloys can successfully replace nickel-chromium alloys, especially for fabrication of long-span metal-ceramic bridges due to the great flexural strength. |
| format | Article |
| id | doaj-art-d699973824fc4a0e8a5899c4f5d44f92 |
| institution | OA Journals |
| issn | 0042-8450 |
| language | English |
| publishDate | 2007-01-01 |
| publisher | Ministry of Defence of the Republic of Serbia, University of Defence, Belgrade |
| record_format | Article |
| series | Vojnosanitetski Pregled |
| spelling | doaj-art-d699973824fc4a0e8a5899c4f5d44f922025-08-20T02:19:33ZengMinistry of Defence of the Republic of Serbia, University of Defence, BelgradeVojnosanitetski Pregled0042-84502007-01-0164424124510.2298/VSP0704241MMechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloysMirković NemanjaBackground/Aim. Metal-ceramic bond strength and alloys' elastic modulus clearly determine the potential of alloy application, because the ceramic integrity during mastication depends on these two characteristics. The aim of this study was to evaluate metal-ceramic bond strength and elastic modulus of cobalt-chromium alloys in making porcelainfused- to-metal restorations, regarding the application of the most frequent nickel-chromium alloy. Methods. The research was performed as an experimental study. Six metalceramic samples were made from nickel-chromium alloy (Wiron 99) and cobalt-chromium alloy (Wirobond C), according to the manufactures manuals and instructions from ISO 9693: 1996. Three-point bending test was performed up to the ceramic fracture. The fracture load was measured on an universal testing machine (Zwick, type 1464), with cross-head speed of 0,05mm/min. Results. The results of this study confirmed the significant differences between the metal-ceramic bond strength (p < 0.01) and elastic modulus (p < 0.001) of nickel-chromium and cobalt-chromium alloys, where cobalt-chromium alloys showed higher values for both tested parameters. Conclusion. Cobalt-chromium metal-ceramic alloys can successfully replace nickel-chromium alloys, especially for fabrication of long-span metal-ceramic bridges due to the great flexural strength.http://www.doiserbia.nb.rs/img/doi/0042-8450/2007/0042-84500704241M.pdfdental alloysceramicsmetalsnickelchromium alloyscobaltelasticity |
| spellingShingle | Mirković Nemanja Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys Vojnosanitetski Pregled dental alloys ceramics metals nickel chromium alloys cobalt elasticity |
| title | Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys |
| title_full | Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys |
| title_fullStr | Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys |
| title_full_unstemmed | Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys |
| title_short | Mechanical properties of metal-ceramic systems from nickel-chromium and cobalt-chromium alloys |
| title_sort | mechanical properties of metal ceramic systems from nickel chromium and cobalt chromium alloys |
| topic | dental alloys ceramics metals nickel chromium alloys cobalt elasticity |
| url | http://www.doiserbia.nb.rs/img/doi/0042-8450/2007/0042-84500704241M.pdf |
| work_keys_str_mv | AT mirkovicnemanja mechanicalpropertiesofmetalceramicsystemsfromnickelchromiumandcobaltchromiumalloys |