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Descripción
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| Currently, two classes of materials are used in the production of CAD/CAM restorations: glass ceramics and resin composites. These latter materials are commonly recommended because of quick fabrication, easier reparation and increased crossed link density compared with conventional light/chemical cured for direct composites. This study seeks to determine the microstructural and mechanical properties of three commercial resin-based materials available for CAD/CAM-processed indirect dental restorations: Lava Ultimate, Crios Brilliant and Cerasmart. Several physical and mechanical tests were performed under two conditions: air and after storage in artificial saliva for 30 days. From these tests, density, hardness, nano-elastic modulus, flexural strength and fracture toughness were determined. In addition, the composition and the microstructure of each material were analysed by field emission scanning electron microscopy (FESEM) and electron dispersive spectroscopy (EDS) to establish the relationship between the microstructure and their macroscopical mechanical behaviour. In general, Lava Ultimate material exhibited slightly higher mechanical properties than the others did; however, the decrease of the mechanical performance after storage in artificial saliva is double in comparison with Crios Brilliant and Cerasmart. In particular, tests of Lava Ultimate performed in air showed 150 MPa flexural strength and 1 MPam1/2 fracture toughness with a hardness of around 1.1 GPa. | |
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Internacional
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Si |
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Nombre congreso
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European Congress and Exhibition on Advanced Materials and Processes (EUROMAT2017) |
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Tipo de participación
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960 |
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Lugar del congreso
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Thessaloniki |
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Revisores
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Si |
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ISBN o ISSN
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0000-0000 |
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DOI
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Fecha inicio congreso
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17/09/2017 |
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Fecha fin congreso
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22/09/2017 |
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Desde la página
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1 |
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Hasta la página
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1 |
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Título de las actas
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Microstructural and mechanical characterisation of dental materials |