The impact of restorative material and ceramic thickness on CAD\CAM endocrowns
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The impact of restorative material and ceramic thickness on CAD\CAM endocrowns

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The impact of restorative material and ceramic thickness on CAD\CAM endocrowns

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dc.contributor.author Tribst, João Paulo Mendes es
dc.contributor.author Dal Piva, Amanda-Maria-de Oliveira es
dc.contributor.author Madruga, Camila-Ferreira-Leite es
dc.contributor.author Valera, Marcia-Carneiro es
dc.contributor.author Bresciani, Eduardo es
dc.contributor.author Bottino, Marco Antônio es
dc.contributor.author de Melo, Renata-Marques es
dc.date.accessioned 2020-02-04T13:25:54Z
dc.date.available 2020-02-04T13:25:54Z
dc.date.issued 2019 es
dc.identifier.uri https://hdl.handle.net/10550/72885
dc.description.abstract Endocrown restorations as a conservative approach to restore endodontically treated teeth still need in vitro investigation under fatigue and made in different materials. This study evaluated the effect of restorative material and restoration thickness on the maximum fracture load of endocrowns subjected to cyclic loading. Sixty (60) third molar teeth received an endocrown preparation with three different heights of remaining dental tissue (1.5, 3.0 or 4.5 mm). A leucite-based ceramic (LEU) and a lithium disilicate (LD) based ceramic were selected to manufacture the CAD/CAM endocrown restorations, totaling 6 groups (n=10). The specimens were subjected to fatigue loading (200N, 2 x 106 cycles, water) and then to the single load to failure test (1 mm/min crosshead speed). Data were analyzed by using two-way ANOVA and Tukey tests (p< 0.05). All endocrowns survived the fatigue test. The thickness did not influence the restoration?s fracture load (p=0.548) instead the restorative material (p=0.003). LD showed higher mean values (1714.43 N)A than LEU (1313.47 N)B. Endocrowns manufactured with CAD/CAM lithium disilicate blocks showed superior fracture load than the leucite-based blocks after mechanical fatigue. Nevertheless, both materials presented acceptable survival and fracture load as long as the material?s minimum thickness and the enamel adhesion are respected. es
dc.source Tribst, João Paulo Mendes ; Dal Piva, Amanda-Maria-de Oliveira ; Madruga, Camila-Ferreira-Leite ; Valera, Marcia-Carneiro ; Bresciani, Eduardo ; Bottino, Marco Antônio ; de Melo, Renata-Marques. The impact of restorative material and ceramic thickness on CAD\CAM endocrowns. En: Journal of Clinical and Experimental Dentistry, 11 11 2019: 969-977 es
dc.title The impact of restorative material and ceramic thickness on CAD\CAM endocrowns 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.identifier.doi 10.4317/jced.56002 es

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