Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations
Introduction. The mechanical strength and the surface hardness of commercially available yttrium-doped zirconia were investigated. Furthermore, a comparative study of eight different ceramic veneers, to be used for the production of two-layered all-ceramic restorative systems, was carried out. Mater...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | International Journal of Dentistry |
| Online Access: | http://dx.doi.org/10.1155/2013/831976 |
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| author | Massimo Marrelli Carmine Maletta Francesco Inchingolo Marco Alfano Marco Tatullo |
| author_facet | Massimo Marrelli Carmine Maletta Francesco Inchingolo Marco Alfano Marco Tatullo |
| author_sort | Massimo Marrelli |
| collection | DOAJ |
| description | Introduction. The mechanical strength and the surface hardness of commercially available yttrium-doped zirconia were investigated. Furthermore, a comparative study of eight different ceramic veneers, to be used for the production of two-layered all-ceramic restorative systems, was carried out. Materials and Methods. Four types of zirconia specimens were analyzed, according to a standard ISO procedure (ISO 6872). Besides, two-layered zirconia-veneer specimens were prepared for three-point bending tests. Results. A strong effect of the surface roughness on the mechanical strength of zirconia specimens was observed. Finally, a comparative study of eight commercially available veneering ceramics shows different modes of failure between the selected veneers. Conclusion. The results indicate that close attention should be paid to the preparation of zirconia-based crowns and bridges by CAD/CAM process, because surface roughness has an important effect on the mechanical strength of the material. Finally, the results of the mechanical tests on two-layered specimens represent an important support to the choice of the veneering ceramic. |
| format | Article |
| id | doaj-art-067c0eb9f9f343ab95b8af362fbc4941 |
| institution | Kabale University |
| issn | 1687-8728 1687-8736 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Dentistry |
| spelling | doaj-art-067c0eb9f9f343ab95b8af362fbc49412025-02-03T01:11:17ZengWileyInternational Journal of Dentistry1687-87281687-87362013-01-01201310.1155/2013/831976831976Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental RestorationsMassimo Marrelli0Carmine Maletta1Francesco Inchingolo2Marco Alfano3Marco Tatullo4Biomedical Section, Tecnologica Research Institute, Via E. Fermi, 88900 Crotone, ItalyDepartment of Mechanical Engineering, University of Calabria (UniCAL), 87136 Arcavacata, Cosenza, ItalyDepartment of Dental Sciences and Surgery, University of Bari, 70124 Bari, ItalyDepartment of Mechanical Engineering, University of Calabria (UniCAL), 87136 Arcavacata, Cosenza, ItalyBiomedical Section, Tecnologica Research Institute, Via E. Fermi, 88900 Crotone, ItalyIntroduction. The mechanical strength and the surface hardness of commercially available yttrium-doped zirconia were investigated. Furthermore, a comparative study of eight different ceramic veneers, to be used for the production of two-layered all-ceramic restorative systems, was carried out. Materials and Methods. Four types of zirconia specimens were analyzed, according to a standard ISO procedure (ISO 6872). Besides, two-layered zirconia-veneer specimens were prepared for three-point bending tests. Results. A strong effect of the surface roughness on the mechanical strength of zirconia specimens was observed. Finally, a comparative study of eight commercially available veneering ceramics shows different modes of failure between the selected veneers. Conclusion. The results indicate that close attention should be paid to the preparation of zirconia-based crowns and bridges by CAD/CAM process, because surface roughness has an important effect on the mechanical strength of the material. Finally, the results of the mechanical tests on two-layered specimens represent an important support to the choice of the veneering ceramic.http://dx.doi.org/10.1155/2013/831976 |
| spellingShingle | Massimo Marrelli Carmine Maletta Francesco Inchingolo Marco Alfano Marco Tatullo Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations International Journal of Dentistry |
| title | Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations |
| title_full | Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations |
| title_fullStr | Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations |
| title_full_unstemmed | Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations |
| title_short | Three-Point Bending Tests of Zirconia Core/Veneer Ceramics for Dental Restorations |
| title_sort | three point bending tests of zirconia core veneer ceramics for dental restorations |
| url | http://dx.doi.org/10.1155/2013/831976 |
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