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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Borba, Márcia
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2024A Comprehensive Review of the Multifaceted Characterisation Approaches of Dental Ceramics
- 2024Influence of Different Surface Finishing Protocols on the Wear Behavior of Lithium Disilicate Glass-Ceramics
- 2023Influence of piston material on the fatigue behavior of a glass-ceramiccitations
- 2023Fatigue resistance of polymeric restorative materials: effect of supporting substrate
- 2023Optimization of Lithium Disilicate Glass-Ceramic Crowns: Finish Line, Scanning, and Processing Methodscitations
- 2020Effect of a new irrigant solution containing glycolic acid on smear layer removal and chemical/mechanical properties of dentincitations
- 2019Effect of supporting substrate on the failure behavior of a polymer-infiltrated ceramic network materialcitations
- 2019Effect of supporting substrate on the failure behavior of a polymer-infiltrated ceramic network materialcitations
- 2019Fatigue Behavior of Crystalline-Reinforced Glass-Ceramicscitations
- 2018Effect of screw-access hole and mechanical cycling on fracture load of 3-unit implant-supported fixed dental prosthesescitations
- 2018Precision of different fatigue methods for predicting glass-ceramic failurecitations
- 2018Precision of different fatigue methods for predicting glass-ceramic failurecitations
- 2018How does the piston material affect the in vitro mechanical behavior of dental ceramics?citations
- 2018How does the piston material affect the in vitro mechanical behavior of dental ceramics?citations
- 2017Influence of surface finishing on fracture load and failure mode of glass ceramic crownscitations
- 2016Effect of different aging methods on the mechanical behavior of multi-layered ceramic structurescitations
- 2016Effect of different aging methods on the mechanical behavior of multi-layered ceramic structurescitations
- 2014Effect of the infrastructure material on the failure behavior of prosthetic crownscitations
- 2011Flexural strength and failure modes of layered ceramic structurescitations
- 2011Flexural strength and failure modes of layered ceramic structurescitations
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article
Effect of screw-access hole and mechanical cycling on fracture load of 3-unit implant-supported fixed dental prostheses
Abstract
<p>Statement of problem: The effect of screw-access holes and mechanical cycling on fracture resistance of 3-unit screw-retained zirconia-based implant-supported fixed dental prostheses (ISFDPs) is unknown. </p><p>Purpose: The purpose of this in vitro study was to evaluate the effect of screw-access holes on the maximum fracture load (L<sub>f</sub>) of 3-unit ISFDPs fabricated with the same abutment design for screw (s)-retained and cement (c)-retained with either a metal- or zirconia-based framework, testing the hypotheses that ISFDPs with screw-access holes have the lowest L<sub>f</sub> and that mechanical cycling decreases the L<sub>f</sub> of screw-retained ISFDPs. </p><p>Material and methods: Models with fiberglass bases with 2 implants were fabricated. Special abutments were designed to allow for both s- and c-retained ISFDPs. The study considered the type of framework (s-retained metal-based and s-retained zirconia-based), fixation (s and c), and aging (a) with mechanical cycling, resulting in the following experimental groups (n=12): c-retained metal-based ISFDP; s-retained metal-based ISFDP (Ms); s-retained zirconia-based ISFDP aged by mechanical cycling (Zsa); and s-retained metal-based ISFDP aged by mechanical cycling (Msa). All ISFDPs were porcelain veneered and subjected to compressive load to failure. Fracture load data were statistically analyzed using 1-way ANOVA and Tukey range tests (α=.05). Fractography was used to evaluate the fracture surfaces. </p><p>Results: Cement-retained ISFDP (Zc and Mc) showed the greatest L<sub>f</sub> values (P<.001). Zs prostheses showed higher L<sub>f</sub> values than those for Ms. Aging significantly decreased the L<sub>f</sub> of Zsa but had no effect on Msa. Chipping was the failure mode most frequently found. Only Zs and Zsa ISFDPs showed catastrophic failures. Conclusions ISFDPs with screw-access holes showed lower L<sub>f</sub> values, regardless of the framework type. Mechanical cycling affected the L<sub>f</sub> of screw-retained zirconia-based ISFDPs.</p>