Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study
The fabrication of fixed dental prostheses using aesthetic materials has become routine in today’s dentistry. In the present study, three-unit full zirconia fixed prosthetic restorations obtained by computer-aided design/computer-aided manufacturing (CAD/CAM) technology were tested by bending trials...
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2021
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oai:doaj.org-article:8fecc42faef241a995079eaa617fa1752021-11-25T18:14:30ZBending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study10.3390/ma142268871996-1944https://doaj.org/article/8fecc42faef241a995079eaa617fa1752021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/6887https://doaj.org/toc/1996-1944The fabrication of fixed dental prostheses using aesthetic materials has become routine in today’s dentistry. In the present study, three-unit full zirconia fixed prosthetic restorations obtained by computer-aided design/computer-aided manufacturing (CAD/CAM) technology were tested by bending trials. The prostheses were intended to replace the first mandibular left molar and were manufactured from four different types of zirconia bioceramics (KatanaTM Zirconia HTML and KatanaTM Zirconia STML/Kuraray Noritake Dental Inc.; NOVAZir<sup>®</sup> Fusion float<sup>®</sup> ml/NOVADENT/Dentaltechnik; and 3D PRO Zirconia/Bloomden Bioceramics). In total, sixteen samples were manufactured—four samples per zirconia material. Additionally, the morphology, grain size area distribution, and elemental composition were analyzed in parallelepiped samples made from the selected types of zirconia in three different areas, noted as the upper, middle, and lower areas. The scanning electron microscope (SEM) analysis highlighted that the grain size area varies with respect to the researched area and the type of material. Defects such as microcracks and pores were also noted to a smaller extent. In terms of grain size area, it was observed that most of the particles in all samples were under 0.5 μm<sup>2</sup>, while the chemical composition of the investigated materials did not vary significantly. The results obtained after performing the bending tests showed that a zirconia material with fewer structural defects and an increased percentage of grain size area under 0.5 µm<sup>2</sup>, ranging from ~44% in the upper area to ~74% in the lower area, exhibited enhanced mechanical behavior. Overall, the resulting values of all investigated parameters confirm that the tested materials are suitable for clinical use.Peter FischerHoria Mihail BarbuCaroline Adela Ingrid FischerMihaela PanteaFlorin BaciuDiana Maria VranceanuCosmin Mihai CotrutTudor Claudiu SpinuMDPI AGarticlezirconiabioceramicbending testdental applicationsTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6887, p 6887 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
zirconia bioceramic bending test dental applications Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
zirconia bioceramic bending test dental applications Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Peter Fischer Horia Mihail Barbu Caroline Adela Ingrid Fischer Mihaela Pantea Florin Baciu Diana Maria Vranceanu Cosmin Mihai Cotrut Tudor Claudiu Spinu Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study |
| description |
The fabrication of fixed dental prostheses using aesthetic materials has become routine in today’s dentistry. In the present study, three-unit full zirconia fixed prosthetic restorations obtained by computer-aided design/computer-aided manufacturing (CAD/CAM) technology were tested by bending trials. The prostheses were intended to replace the first mandibular left molar and were manufactured from four different types of zirconia bioceramics (KatanaTM Zirconia HTML and KatanaTM Zirconia STML/Kuraray Noritake Dental Inc.; NOVAZir<sup>®</sup> Fusion float<sup>®</sup> ml/NOVADENT/Dentaltechnik; and 3D PRO Zirconia/Bloomden Bioceramics). In total, sixteen samples were manufactured—four samples per zirconia material. Additionally, the morphology, grain size area distribution, and elemental composition were analyzed in parallelepiped samples made from the selected types of zirconia in three different areas, noted as the upper, middle, and lower areas. The scanning electron microscope (SEM) analysis highlighted that the grain size area varies with respect to the researched area and the type of material. Defects such as microcracks and pores were also noted to a smaller extent. In terms of grain size area, it was observed that most of the particles in all samples were under 0.5 μm<sup>2</sup>, while the chemical composition of the investigated materials did not vary significantly. The results obtained after performing the bending tests showed that a zirconia material with fewer structural defects and an increased percentage of grain size area under 0.5 µm<sup>2</sup>, ranging from ~44% in the upper area to ~74% in the lower area, exhibited enhanced mechanical behavior. Overall, the resulting values of all investigated parameters confirm that the tested materials are suitable for clinical use. |
| format |
article |
| author |
Peter Fischer Horia Mihail Barbu Caroline Adela Ingrid Fischer Mihaela Pantea Florin Baciu Diana Maria Vranceanu Cosmin Mihai Cotrut Tudor Claudiu Spinu |
| author_facet |
Peter Fischer Horia Mihail Barbu Caroline Adela Ingrid Fischer Mihaela Pantea Florin Baciu Diana Maria Vranceanu Cosmin Mihai Cotrut Tudor Claudiu Spinu |
| author_sort |
Peter Fischer |
| title |
Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study |
| title_short |
Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study |
| title_full |
Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study |
| title_fullStr |
Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study |
| title_full_unstemmed |
Bending Fracture of Different Zirconia-Based Bioceramics for Dental Applications: A Comparative Study |
| title_sort |
bending fracture of different zirconia-based bioceramics for dental applications: a comparative study |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/8fecc42faef241a995079eaa617fa175 |
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