Alsadon, O., Patrick, D., Johnson, A. et al. (2 more authors) (2017) Fracture resistance of zirconia-composite veneered crowns in comparison with zirconia-porcelain crowns. Dental Materials Journal, 36 (3). pp. 289-295. ISSN 0287-4547
Abstract
The objectives were to evaluate the fracture resistance and stress concentration in zirconia/composite veneered crowns in comparison to zirconia/porcelain crowns using occlusal fracture resistance and by stress analysis using finite element analysis method. Zirconia substructures were divided into two groups based on the veneering material. A static load was applied occlusally using a ball indenter and the load to fracture was recorded in Newtons (N). The same crown design was used to create 3D crown models and evaluated using FEA. The zirconia/composite crowns subjected to static occlusal load showed comparable results to the zirconia/porcelain crowns. Zirconia/composite crowns showed higher stress on the zirconia substructure at 63.6 and 50.9 MPa on the zirconia substructure veneered with porcelain. In conclusion, zirconia/composite crowns withstood high occlusal loads similar to zirconia/porcelain crowns with no significant difference. However, the zirconia/composite crowns showed higher stress values than the zirconia/porcelain crowns at the zirconia substructure.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Japanese Society for Dental Materials and Devices. This is an author produced version of a paper subsequently published in Dental Materials Journal. Uploaded with permission from the copyright holder. |
Keywords: | Zirconia; Composite veneer; Porcelain veneer; Bi-layered crowns; Fracture resistance |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Medicine, Dentistry and Health (Sheffield) > School of Clinical Dentistry (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 16 May 2017 15:18 |
Last Modified: | 29 Jul 2017 12:45 |
Published Version: | https://doi.org/10.4012/dmj.2016-298 |
Status: | Published |
Publisher: | Japanese Society for Dental Materials and Devices |
Refereed: | Yes |
Identification Number: | 10.4012/dmj.2016-298 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:116282 |