Pengaruh Penyinaran Qth Dan Led Pada Kekuatan Tekan Resin Komposit Bulkfilldengan Berbagai Ketebalan

Color Stability of a Microhybrid Resin Composite Polymerized with LED and QTH Light Curing Units

Introduction: Discoloration of resin composites is a common reason for replacement of these restorations. The aim of this study was to eva-luate the influence of different light curing de-vices on color stability of a microhybrid resin composite.  Materials and Methods: 80 disc-shaped speci-mens (8 mm in diameter, 2-mm height) were fabricated from filtek Z250 resin composite. Specimens wer...

Color Stability of a Microhybrid Resin Composite Polymerized with LED and QTH Light Curing Units

Hardening of a dual-cure resin cement using QTH and LED curing units

OBJECTIVE This study evaluated the surface hardness of a resin cement (RelyX ARC) photoactivated through indirect composite resin (Cristobal) disks of different thicknesses using either a light-emitting diode (LED) or quartz tungsten halogen (QTH) light source. MATERIAL AND METHODS Eighteen resin cement specimens were prepared and divided into 6 groups according to the type of curing unit and...

Hardening of dual-cure resin cements and a resin composite restorative cured with QTH and LED curing units.

OBJECTIVE The aim of this study was to determine the effects of light intensity and type of light unit (quartztungsten-halogen [QTH] or light-emitting diode [LED]) on the hardening of various resin cements and a resin composite restorative. METHODS Disk specimens were prepared from 4 dual-cured resin cements (Variolink II, Calibra, Nexus 2 and RelyX ARC). Two QTH light-curing units (Visilux 2...

Watermarking pada Video: Robustness, Impercetibility dan Pendekatan untuk Domain Terkompresi

ABSTRAK Meningkatnya penggunaan dokumen digital khususnya multimedia (citra, audio, video) dan kemudahan transmisi data melalui Internet meningkatkan kebutuhan terhadap keamanan data terhadap pelanggaran hak cipta. Watermarking merupakan pendekatan yang telah banyak digunakan dan merupakan bagian dari Digital Right Management (DRM) yang dibuat untuk memenuhi kebutuhan tersebut. Khusus untuk vid...