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Análise da microdureza vickers de zircônia Y-TZP pré-sinterizada para a usinagem e posterior aplicação como copings
(2017-01-01)
Y-TZP zirconia is widely used in the manufacture of coping as a structural material for dental prosthesis due to its opaque white/pearl color and mechanical strength. Dentures are made by machining with cam (computer aided ...
Influence of CAD-CAM milling on the flexural strength of Y-TZP dental ceramics
(2019-06-01)
In this work, the influence of milling strategy and cutter wear on the flexural strength of sintered Y-TZP ceramics machined in a CAD-CAM system, was investigated. Pre-sintered Y-TZP blocks were machined with tungsten ...
Influence of the green-machining parameters on the mechanical properties of alumina rods
(2017-02-01)
Green and white machining has being extensively employed in compact blanks to obtain a pre-form prior to the sintering of advanced ceramics. Both machining processes involve low-energy consumption and high material removal ...
Brittleness index and its relationship with materials mechanical properties: Influence on the machinability of CAD/CAM materials
(2019-01-01)
The aim of this study is to evaluate the machinability of four CAD/CAM materials (n = 13) assessed by brittleness index, Vickers hardness, and fracture toughness and interaction among such mechanical properties. The materials ...
Effect of primer-cement systems with different functional phosphate monomers on the adhesion of zirconia to dentin
(2018-12-01)
Purpose: The objective of this study was to evaluate the effect of primer-cement systems with different functional phosphate monomers on the adhesion of zirconia to dentin with and without aging protocols. Materials and ...
Effect of several repair techniques on the bond strength between composite resin and degraded y-tzp ceramicEfeito de várias técnicas de reparo na resistência de união entre resina composta e zircônia degradada
(2018-01-01)
Objective: To evaluate the bond strength of different repair treatments for composite resin to aged Y-TZP ceramics. Material and Methods: Zirconia blocks were cut into smaller specimens, sintered according to manufacturer’s ...