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| CATEGORY: ORIGINAL RESEARCH |
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| Year : 2020 | Volume
: 20
| Issue : 5 | Page : 12 |
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Evaluation of Shear Bond Strength of Bilayered All Ceramics Systems with Finite Element and Acoustic Emission Analysis
Sivaranjani Gali
M.S. Ramaiah Dental College, Karnataka
| Date of Web Publication | 8-Jan-2021 |
Correspondence Address:
 Source of Support: None, Conflict of Interest: None  | Check |
DOI: 10.4103/0972-4052.306331
How to cite this article:
Gali S. Evaluation of Shear Bond Strength of Bilayered All Ceramics Systems with Finite Element and Acoustic Emission Analysis. J Indian Prosthodont Soc 2020;20, Suppl S1:12 |
How to cite this URL:
Gali S. Evaluation of Shear Bond Strength of Bilayered All Ceramics Systems with Finite Element and Acoustic Emission Analysis. J Indian Prosthodont Soc [serial online] 2020 [cited 2021 Jan 28];20, Suppl S1:12. Available from: https://www.j-ips.org/text.asp?2020/20/5/12/306331 |
Introduction: All-ceramics systems have gained remarkable interest, amongst the metal free ceramic systems, due to their superior mechanical properties. However, veneer fractures and chipping in bilayered ceramic restorations present a major limitation.
Methodology: Shear bond strength of commercially available core ceramics to veneering ceramics along with an experimental zirconia mica glass ceramics was evaluated. In addition, the interfacial core-veneer stresses were estimated using finite element modelling and co-related the results of shear bond strength with acoustic emission analysis. Three dimensional finite element models of ceramic core-veneer were modelled to simulate the experimental shear bond strength tests. Shear bond strength between core-veneer specimens were tested with a universal testing machine at a cross-head speed of 1mm/ min with acoustic emission (AE) sensors to investigate the material response such as fracture initiation and propagation.
Result: High shear bond strength were observed in IPS e.max Press-IPS e.max Ceram with cohesive core fractures followed by Zirconia-IPS e.max Ceram with mixed mode fractures.
Conclusion: Interfacial reactive bonding between glass ceramics of IPS e.max Press and IPS e.max Ceram direct the promotion of fusion glass-ceramic in zirconia bilayered restorations.
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