Now showing items 1-10 of 545
Influence of pre-heat treatment and different light-curing units on Vickers hardness of a microhybrid composite resin
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) ...
Effect of pre-heating resin composite and light-curing units on monomer conversion
The purpose of this study was to evaluate the effect of pre-heating resin composite photo-cured with light-curing units (LCU) by FT-IR. Twenty specimens were made in a metallic mold (4 mm diameter × 2 mm thick) from composite ...
The effect of curing light and chemical catalyst on the degree of conversion of two dual cured resin luting cements
(SPRINGER LONDON LTDLONDON, 2012)
The aim of this study was to evaluate the influence of different curing lights and chemical catalysts on the degree of conversion of resin luting cements. A total of 60 disk-shaped specimens of RelyX ARC or Panavia F of ...
Curing depth of composite resin light cured by LED and halogen light-curing units
(Maik Nauka/interperiodica/springer, 2008-11-01)
The purpose of this study was to evaluate the polymerization effectiveness of a composite resin (Z-250) utilizing microhardness testing. In total, 80 samples with thicknesses of 2 and 4 mm were made, which were photoactivated ...
In vitro lingual bracket evaluation of indirect bonding with plasma arc, LED and halogen light
Authors - Magno AFF, Martins RP, Vaz LG, Martins LP Objectives - Evaluate the shear bond strength (SBS) and the adhesive remnant index (ARI) of indirect bonded lingual brackets using xenon plasma arc light, light-emitting ...
Influence of light curing source on microhardness of composite resins of different shades
Introduction: The evolution of light curing units can be noticed by the different systems recently introduced. The technology of LED units promises longer lifetime, without heating and with production of specific light for ...
Kinetics of conversion of two dual-cured adhesive systems
(Elsevier Science IncNew YorkEUA, 2008)
Effect of curing time on the bond strength of a bracket-bonding system cured with a light-emitting diode or plasma arc light
(European Orthodontic SocietyPorto Alegre, 2011)
The purpose of this study was to assess the influence of two light units, a light-emitting diode (LED) and a plasma arc light (PAC), on the shear bond strength (SBS) of brackets bonded to enamel. Ninety bovine teeth were ...