搜索结果: 1-12 共查到“医学 Curing units”相关记录12条 . 查询时间(0.156 秒)
Effectiveness of composite resin polymerization using light-emitting diodes (LEDs) or halogen-based light-curing units
Composite resins Spectrophotometry
2009/10/20
The clinical performance of composite resins is greatly influenced by the quality of the light-curing unit used. The aim of this study was to compare the efficiency of a commercial light-emitting diod...
Influence of composite restorative materials and light-curing units on diametrical tensile strength
Light emitting diode Composite resins Diametrical tensile strength Mechanical properties
2009/10/19
The aim of this study was to evaluate the diametrical tensile strength (DTS) of three light-curing photo-activated composites with two different light curing units (LCU). Three types of dental restora...
Influence of different light curing units on the bond strength of indirect resin composite restorations
Resin cements Composite resins
2009/10/16
The aim of this study was to evaluate the influence of different light sources on the bond strength of indirect resin composite restorations cemented with a dual-cure resin cement. The superficial den...
Stability and Reproducibility of Radiometric Properties of Light Curing Units (LCUs). Part II: LED LCUs
LED light curing units (LED LCUs) Radiometric properties Spectral emission
2009/9/11
The present work is the second part of a study on the stability and reproducibility of the energy and spectral emission of some light curing units (LCUs). In this part, Part II, LED LCUs were investig...
Stability and Reproducibility of Radiometric Properties of Light Curing Units (LCUs). Part I: QTH LCUs
Quartz tungsten halogen light-curing unit (QTH LCUs) Radiometric properties Spectral emission
2009/9/11
The present study, divided into two parts, analyses the stability and reproducibility of the spectral and energy emission of the present light-curing units (LCUs), quartz tungsten halogen (QTH) and li...
Dentin Bond Strengths of Three Adhesive/Composite Core Systems using Different Curing Units
Tensile bond strength Composite core Curing units
2009/9/11
This study evaluated the tensile bond strengths of three adhesive/composite core materials to bovine dentin using three different curing units. Bovine dentin surfaces were ground with 600-grit SiC pap...
Effect of Inhomogeneity of Light from Light Curing Units on the Surface Hardness of Composite Resin
Light curing unit Light intensity Knoop hardness number
2009/9/11
This study investigated the characteristics of output light from different types of light curing units, and their effects on polymerization of light-activated composite resin. Three quartz-tungsten-ha...
Temperature rise induced by various light curing units through human dentin
Light curing units Temperature rise Dentin
2009/9/11
This study investigated temperature rises caused by different light curing units (LCUs) in dentin of different thicknesses. The different LCUs tested in this study were namely: quartz-tungsten-halogen...
Evaluation of Light Curing Units Used for Polymerization of Orthodontic Bonding Agents
Light curing units Blue light–emitting diode Tungsten-quartz halogen Plasma arc
2008/12/17
This study evaluated the light intensity of various light curing units, the effect of distance of the light guide, and the validity of a tapered light guide. Light curing units tested included (1) f...
Microleakage beneath Ceramic and Metal Brackets Photopolymerized with LED or Conventional Light Curing Units
Ceramic bracket Metal bracket Microleakage LED curing Photopolymerization
2008/11/24
Objective: To test the null hypotheses that (1) the type of light curing unit used (quartz-tungsten-halogen [QTH] or light-emitting diode [LED]) would not affect the amount of microleakage observed ...
Temperature Rise During Orthodontic Bonding With Various Light-curing Units—An In Vitro Study
Temperature rise Pulp chamber Orthodontic bonding Light curing
2008/11/19
The purpose of this in vitro study was to investigate the temperature changes in the pulp chamber during bracket bonding using three different light sources. Bracket bonding was performed on one...
A Comparison of the Shear Bond Strength of Orthodontic Brackets Bonded With Light-Emitting Diode and Halogen Light-Curing Units
Light emitting diode Orthodontic bracket
2010/4/2
Statement of the problem: Various methods such as light emitting diode (LED) have been used to enhance the polymerization of resin-based orthodontic adhesives. There is a lack of information on the ad...