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Microhardness assessment of different commercial brands of resin composites with different degrees of translucence
Composite resins Hardness Color
2009/10/16
Owing to improvements in its mechanical properties and to the availability of shade and translucence resources, resin composite has become one of the most widely used restorative materials in present ...
In vitro toothbrushing abrasion of dental resin composites:packable,microhybrid,nanohybrid and microfilled materials
Composite resins Surface properties Physical properties Toothbrushing
2009/10/16
This study evaluated weight loss and surface roughening after toothbrushing of different resin composites: one packable (Solitaire 2, Heraeus Kulzer), one microhybrid (Charisma, Heraeus Kulzer), one n...
Flexural strength and hardness of direct and indirect composites
Composite resins Dental materials Hardness
2009/10/16
The objective of this study was to evaluate the l exural strength
() and hardness (H) of direct and indirect composites, testing the hy-
f potheses that direct resin composites produce higher and ...
Preparation and Properties of Chitosan/Calcium Phosphate Composites for Bone Repair
Chitosan Calcium phosphate Composites
2009/9/15
Chitosan/calcium phosphate (CaP) composites composed of bioactive calcium phosphate and flexible chitosan were made by a simple mixing-and-heating method. Phase composition, morphology, and mechanical...
Influence of Centrifugal Force on Filler Loading of Resin Composites
Centrifugal force Composite Light-polymerizing apparatus
2009/9/15
This study examined the influence of centrifugal force on the filler loading of composites using a light-polymerizing apparatus combined with a centrifuge. To assess uneven filler particle distributio...
Mechanical Properties of Woven Glass Fiber-Reinforced Composites
Mechanical property Glass fiber Composite
2009/9/14
The aim of this investigation was to measure the flexural and compressive strengths and the corresponding moduli of cylindrical composite specimens reinforced with woven glass fiber. Test specimens we...
Color Stability of Resin Composites after Immersion in Different Drinks
Color stability Resin composite Drink
2009/9/14
The purpose of this study was to evaluate the discoloration of two nanohybrids, two microhybrids, and a posterior composite resin restorative material upon exposure to different drinks — namely tea, c...
Cytotoxicity Evaluation of Two Different Composites with/ without Fibers and One Nanohybrid Composite
Cytotoxicity Fiber-reinforced systems Nanohybrid composite
2009/9/14
In this study, cytotoxicity of two different composites with/ without fibers (Adoro/ Vectris and SculpturePlus/ FiberKor) and one nanohybrid composite (Artglass) were investigated and compared. Compos...
Dynamic Viscoelastic Behavior of Dental Composites Measured by Split Hopkinson Pressure Bar
Dental composite Dynamic viscoelastic properties Split Hopkinson pressure bar
2009/9/14
The present study evaluated the dynamic viscoelastic behavior of commercially available dental composites by a Split Hopkinson pressure bar (SHPB) test machine. Five commercially available composite r...
Staining of Hybrid Composites with Coffee,Oolong Tea,or Red Wine
Light-cured resin composite Staining, Chlorhexidine
2009/9/14
This study examined the surface staining mechanism of a photopolymerized composite by coffee, oolong tea, and red wine.
Dental composite was subjected to an experimental 24-hour staining cycle: 17-ho...
Effect of Enamel Shades on Color of Layered Resin Composites
Resin composite Color Translucency
2009/9/14
The purpose of this study was to evaluate the effect of the covering enamel layer of various thicknesses on the color of layered resin composites (LRC). To this end, the CIELAB parameters of the follo...
Effect of Surface Characteristics on Adherence of S. mutans Biofilms to Indirect Resin Composites
Indirect resin composite S.mutans Hybrid composite
2009/9/14
The purpose of this study was to evaluate the adherence of biofilms to the surfaces of two indirect resin composites, Estenia C&B and Gradia. Slabs were prepared from the materials, and then either gr...
Microhardness Evaluation of Resin Composites Polymerized by Three Different Light Sources
Microhardness Resin composite Light curing unit
2009/9/14
This study examined the surface microhardness of four kinds of resin composites with different fillers and resin matrices. Ten specimens of 2 mm thickness and 4 mm diameter of each resin composite wer...
Compressive Fatigue Behavior of Dental Restorative Composites
Dental composites Compressive fatigue Fracture mechanism
2009/9/14
The purpose of this study was to investigate the compressive fatigue behavior of five dental composites. Cylindrical specimens of 8 mm length and 4 mm diameter were made according to manufacturers' re...
Effect of Light Irradiation Time on the Mechanical Properties of Two Flowable Composites with Different Initiation Systems in Bonded and Unbonded Cavities
Flowable composite Mechanical properties Bonding
2009/9/14
The aim of this study was to evaluate the regional mechanical properties of flowable composites with different initiation systems under free and constrained conditions. Forty cavities fabricated in re...