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Showing 1 to 15 of 15 for “"light curing"”.
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Polymerization shrinkage stress of light curing dental composites
… mm gap between them. The resin was injected and light cured for 20 seconds. The load curve was recorded until 5 mins after the end of light cure. The stress values were calculated in MPa from the division of contraction forced recorded at 20 s. 60 s.180 s. and 300 s. Statistical analysis was done …
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Evaluation of multiple and single emission peak light emitting diode light curing units effect on the degree of conversion and microhardness of resin-based pit and fissure sealant
… objective was to assess a multiple emission peak light-emitting-diode (LED) light-curing unit (LCU) by measuring the polymerization efficiency through the degree of conversion (DC) and Knoop microhardness (KHN) of a resin-based pit and fissure sealant at various light curing times and two …
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Composite cure and post-gel shrinkage with different halogen and LED curing lights
… of this research study was to determine the curing efficiency of different LED (light-emitting diodes) and halogen curing lights through various selected properties such as the thermal emission, effectiveness of cure, depth of cure, polymerization shrinkage and degree of conversion. Ten …
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Die Wirkung verschiedener LED-Geräte auf die Durchhärtungstiefe und die Vickers-Härte verschiedener Composite
Dental light-curing composites have been cured successful with halogen and plasma-light long time ago. Since now the technologie of LED-light is allready used for polymerization of composites. The aim of this paper was to inquire the influence of LED-Light on the curing depth and the Vickers …
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The Effect of Pre-Cure Bracket Movement on the Shear Bond Strength of Metal Brackets
… movement after seating the brackets and before light curing has not been reported. The purpose of this study was to determine the effect of linear and rotational pre-cure bracket movement on the shear bond strength of orthodontic brackets. 100 extracted human maxillary premolars were divided …
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Orthodontic bracket bond strength and resin composite adhesive degree of conversion associated with type of curing unit and total energy
This study examined the effect of light curing sources on shear bond strength and degree of conversion of orthodontic resin composite adhesive as function of type of curing unit and total energy, as well as evaluated the correlation between shear bond strength and degree of conversion. Curing units …
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Effects Of Delayed Polymerization Time and Bracket Manipulation on Orthodontic Resin Modified Glass Ionomer Adhesive
… placement and manipulation and subsequent light curing. Based on an analysis of variance (α=.05), the SBS was not significantly different between the three groups. While one of the goals of this study was to be the first study to quantify DC of RMGI using Raman microspectroscopy, several …
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Spatial Emission and Polarization Control in Integrated Photonics for Optical-Trapping and Trapped-Ion Systems
… functionality such as spatial control of light in the near field or polarization control at visible wavelengths. This thesis addresses this gap by designing and experimentally demonstrating the first, to the best of our knowledge, cell experiments using single-beam integrated optical …
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Durability and aging of dental fissure sealants
… These processing parameters included the blue light exposure time for each light-curing system and time after illumination. The results indicate that the level of cure for each system was incomplete at the end of all processing procedures. Heating as well as further aging of the cured resin …
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Beam profile characterization of light-emitting-diode curing units and its effect on polymerization of a resin-matrix composite
… localized irradiance beam profiles from multiple light-emitting-diode (LED) light-curing units (LCUs) on the polymerization pattern within a resin-matrix composite (RMC). Irradiance beam profiles were generated from one quartz-tungsten-halogen and various single and multiple emission peak LED LCUs …
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Synthesis and characterization of "non-shrinking" nanocomposites for dental applications
… samples investigated were cured using a dental light-curing unit at 500mW/cm2 for 40 seconds. At all time intervals, shrinkage associated with the control was found to be significantly higher than all SSQ based materials and their formulated neat resins. However, both hardness and modulus of the …
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Performance of several diagnostic systems on detection of occlusal primary caries in permanent teeth
… and Assessment System (ICDAS); two quantitative light-induced fluorescence systems QLF; Inspektor™ Pro and QLF-D Biluminator™2 (Inspektor Research Systems B.V.; Amsterdam, The Netherlands); and photothermal radiometry and modulated luminescence (PTR/LUM) of The Canary System® (Quantum Dental …
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Schrumpfungsverhalten von Kompositen bei Aushärtung mit unterschiedlichen Polymerisationsgeräten bzw. -verfahren in vitro
… drei verschiedenen Lichtintensitäten (Elipar Trilight, ESPE), Exponentialhärtung (dito), Stufenhärtung (Elipar Hilight, ESPE), Pulse Härtung (VIP, Bisco) und zwei Xenon Plasmabogenlampen (Apollo95E, DMDS; PAC, ADT). Die Standard Halogenlampen mit geringer Lichtintensität verzögern den Startpunkt …
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Restmonomergehalt von Kompositen bei Aushärtung mit unterschiedlichen Polymerisationsgeräten bzw. -verfahren in vitro
… mit drei verschiedenen Intensitäten (TriLight, ESPE), die Exponentialpolymerisation (Ramp Curing) (dito), die Stufenpolymerisation (Step Curing) (HiLight, ESPE), die Pulspolymerisation (VIP Light, Bisco) und die Plasmahärtung (Apollo 95E, DMDS; Lightning Cure, ADT). Die initiale …
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Strukturelle Klebungen mit UV- und lichthärtenden Acrylaten
UV- und lichthärtenden Acrylatklebstoffen steht ein breites Anwendungsspektrum im Konstruktiven Glasbau offen. Ihr farbloses und klares Erscheinungsbild fördert eine Konstruktion, die transparent und leicht wirken soll. Kurze Aushärtezeiten, die sich im Sekunden- oder einstelligen Minutenbereich …