Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Microstructural and mechanical characterisation of dental materials
Year:2017
Research Areas
  • Natural sciences and health sciences,
  • Engineering
Information
Abstract
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.
International
Si
Congress
European Congress and Exhibition on Advanced Materials and Processes (EUROMAT2017)
960
Place
Thessaloniki
Reviewers
Si
ISBN/ISSN
0000-0000
Start Date
17/09/2017
End Date
22/09/2017
From page
1
To page
1
Microstructural and mechanical characterisation of dental materials
Participants
  • Autor: Teresa Palacios Garcia (UPM)
  • Autor: Cristian Abad (Universidad Complutense de Madrid)
  • Autor: Guillermo Pradíes (Universidad Complutense de Madrid)
  • Autor: Jose Ignacio Pastor Caño (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Materiales Estructurales Avanzados y Nanomateriales
  • Centro o Instituto I+D+i: CENTRO INVEST. MATERIALES ESTRUCTURALES (CIME)
  • Departamento: Ciencia de Materiales
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