Fracture resistance and failure mode of posterior fixed dental prostheses fabricated with two zirconia CAD/CAM systems
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Fracture resistance and failure mode of posterior fixed dental prostheses fabricated with two zirconia CAD/CAM systems

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Fracture resistance and failure mode of posterior fixed dental prostheses fabricated with two zirconia CAD/CAM systems

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dc.contributor.author López Suárez, Carlos es
dc.contributor.author Gonzalo, Esther es
dc.contributor.author Peláez, Jesús es
dc.contributor.author Rodríguez López, María Verónica es
dc.contributor.author Suárez García, María Jesús es
dc.date.accessioned 2015-06-29T11:46:24Z
dc.date.available 2015-06-29T11:46:24Z
dc.date.issued 2015 es
dc.identifier.uri http://hdl.handle.net/10550/44843
dc.source López Suárez, Carlos ; Gonzalo, Esther ; Peláez, Jesús ; Rodríguez López, María Verónica ; Suárez García, M. ª Jesús. Fracture resistance and failure mode of posterior fixed dental prostheses fabricated with two zirconia CAD/CAM systems. En: Journal of Clinical and Experimental Dentistry, 2015, Vol. 7, No. 2: 250-253 es
dc.subject Odontología es
dc.subject Ciencias de la salud es
dc.title Fracture resistance and failure mode of posterior fixed dental prostheses fabricated with two zirconia CAD/CAM systems es
dc.type info:eu-repo/semantics/article en
dc.type info:eu-repo/semantics/publishedVersion en
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.description.abstractenglish Background: In recent years there has been an improvement of zirconia ceramic materials to replace posterior missing teeth. To date little in vitro studies has been carried out on the fracture resistance of zirconia veneered posterior fixed dental prostheses. This study investigated the fracture resistance and the failure mode of 3-unit zirconia-based posterior fixed dental prostheses fabricated with two CAD/CAM systems. Material and Methods: Twenty posterior fixed dental prostheses were studied. Samples were randomly divided into two groups (n=10 each) according to the zirconia ceramic analyzed: Lava and Procera. Specimens were loaded until fracture under static load. Data were analyzed using Wilcoxon ́s rank sum test and Wilcoxon ́s signed-rank test ( P <0.05). Results: Partial fracture of the veneering porcelain occurred in 100% of the samples. Within each group, significant differences were shown between the veneering and the framework fracture resistance ( P =0.002). The failure occurred in the connector cervical area in 80% of the cases. Conclusions: All fracture load values of the zirconia frameworks could be considered clinically acceptable. The connector area is the weak point of the restorations es

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