Nanohardness and Elastic Modulus of Different Resin Cements After Accelerated Aging
Ana Paula Gebert de Oliveira Franco1*, Renata Tomazini de Queiroz2, Márcio José Fraxino Bindo3, Nerildo Luiz Ulbrich3, Osnara Maria Mongruel Gomes4 & Rui Fernando Mazur5
1PhD in Dentistry, Pontifice University Catholic of Paraná, Curitiba, Paraná, Brazil
2Student of Dentistry, Pontifice University Catholic of Paraná, Curitiba, Paraná, Brazil
3Professor of Dentistry, Federal University of Paraná, Curitiba, Paraná, Brazil
4Professor of Dentistry, State University of Ponta Grossa, Ponta Grossa, Paraná, Brazil
5PhD in Restorative Dentistry, Paulist State University Júlio Mesquita Filho, São Paulo, São Paulo, Brazil
Dr. Ana Paula Gebert de Oliveira Franco, PhD in Dentistry, Pontifice University Catholic of Paraná, Curitiba, Paraná, Brazil.
Keywords: Nanoindentation; Resin Cements; Mechanical Properties; Thermocycling
The properties of resin cements used to lute prosthesis to dental structures should be investigated by simulating the oral environment.
The aim of this study was to evaluate the mechanical properties of resin cements of chemical and dual sets by immediate hardness and after accelerated aging by thermocycling.
Five Disc shaped specimens were prepared for each resin cement evaluated using a metallic mold (10mm diameter X 1mm thick). The resin cements evaluated in the present study were: Multilink (Ivoclar-Vivadent), Relyx ARC (3M/ESPE), All Cem (FGM), Enforce (Caulk/Dentsply), Variolink II (Ivoclar-Vivadent), and Relyx U-200 (3M/ESPE). The specimens were subjected to indentations before and after accelerated aging by thermocycling to determine mechanical properties such as hardness and elastic modulus.
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