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Effect of microwave disinfection on physical and mechanical properties of acrylic resins
(2008-12-01)
This study evaluated the effect of microwave energy on the hardness, impact strength and flexural strength of the Clássico, Onda-Cryl and QC-20 acrylic resins. Aluminum die were embedded in metallic or plastic flasks with ...
Influence of thermal and mechanical cycling on the flexural strength of ceramics with titanium or gold alloy frameworks
(2008-03-01)
Objectives: The aim of this study was to evaluate the effect of thermal and mechanical cycling alone or in combination, on the flexural strength of ceramic and metallic frameworks cast in gold alloy or titanium. Methods: ...
Effect of radiotherapy on the radiopacity and flexural strength of a composite resin.
(2008-12-01)
The aim of this study was to evaluate the effect of radiotherapy on the radiopacity and flexural strength of composite resin. Forty Z250 composite resin specimens were polymerized using a halogen light-curing unit and ...
Flexibility and torsional resistance of three nickel-titanium retreatment instrument systems
(2011-08-01)
Aim To assess the dimensional characteristics, flexibility and torsional behaviour of nickel-titanium retreatment instruments. Methodology Using image analysis software and high-resolution digital images, the instrument ...
Effect of hydrofluoric acid etching duration on the roughness and flexural strength of a lithium disilicate-based glass ceramic
(2011-05-13)
The aim of this study was to examine the effect of different acid etching times on the surface roughness and flexural strength of a lithium disilicate-based glass ceramic. Ceramic bar-shaped specimens (16 mm x 2 mm x 2 mm) ...