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Influence of pre-heat treatment and different light-curing units on Vickers hardness of a microhybrid composite resin
(2009-06-01)
The aim of this study was to evaluate the hardness of a dental composite resin submitted to temperature changes before photo-activation with two light-curing unite (LCUs). Five samples (4 mm in diameter and 2 mm in thickness) ...
Evaluation of Vickers hardness of different types of acrylic denture base resins with and without glass fibre reinforcement
(WILEY-BLACKWELLHOBOKEN, 2013-08-02)
Objective: To evaluate the Vickers hardness of different acrylic resins for denture bases with and without the addition of glass fibres. Background: It has been suggested that different polymerisation methods, as well as ...
The effects of exposure time on the surface microhardness of three dual-cured dental resin cements
(2011-09-01)
This study evaluated the exposure time of light-curing of the polymers used for cementation on microhardness test in different storage times. The polymers (specifically called resin cements) were RelyX ARC, RelyX U100, and ...
Vickers hardness of cast commercially pure titanium and Ti-6Al-4V alloy submitted to heat treatments
(2006-12-01)
The purpose of this study was to evaluate the effect of heat treatments on the Vickers hardness of commercially pure titanium and Ti-6Al-4V cast alloys. Six-millimeter-diameter cylindrical specimens were cast in a Rematitan ...
Chemical analysis and Vickers hardness of orthodontic mini-implants
(Faculdade de Odontologia de Piracicaba - UNICAMP, 2015-03-01)
Orthodontic mini-implants are used in clinical practice to provide efficient and aesthetically-pleasing anchorage. AIM: To evaluate the hardness Vickers hardness and chemical composition of mini-implant titanium alloys ...
Chemical analysis and Vickers hardness of orthodontic mini-implants
(2015-01-01)
Orthodontic mini-implants are used in clinical practice to provide efficient and aesthetically-pleasing anchorage. Aim: To evaluate the hardness (Vickers hardness) and chemical composition of miniimplant titanium alloys ...
Evaluation of Vickers hardness of different types of acrylic denture base resins with and without glass fibre reinforcement
(Wiley-BlackwellHoboken, 2012)
Diffusion coefficient of K+ in ion exchanged glasses calculated from the refractive index and the Vickers hardness profiles
(Elsevier B.V., 2006-09-15)
The top faces of float glass samples were exposed to vapors resulting from the decomposition of KNO3 at 565 degrees C for up to 32 h. X-ray dispersive spectra (EDS) show that K+ ions migrate into the glass. The K+ concentration ...
ISE and fracture toughness evaluation by Vickers hardness testing of an Al3Nb-Nb2Al-AlNbNi in situ composite
(Elsevier Science SaLausanneSuíça, 2009)