The aim of this study was to assess the effect of toothbrushing with toothpastes having different relative dentine abrasivity (RDA) and toothbrushes having different bristles hardness on different composite resins, compomers and traditional glassionomer cements by surface roughness evaluation. All the samples were evaluated regarding the surface roughness using roughness checker (Taylor Hobson-...

Surface treatment of dentin before the bleaching procedure may affect its permeability and influence the bond strength of restorative materials. This study evaluated the influence of surface treatment before the bleaching on shear bond strength (SBT) of restorative materials to intracoronal dentin. Dentin slabs were subjected to surface treatment: no bleaching (control - CON), no surface treatm...

BACKGROUND Polyfiber posts used inside the root canal can help to restore the fracture resistance of weakened premolars. AIM To assess the fracture resistance of endodontically treated premolars restored with different techniques, including the new polyfiber post (Spirapost). MATERIALS AND METHODS One hundred superior premolars were distributed into 10 groups (n = 10): Sound teeth (G1-posit...

in 1989 significantly contributed to the growth of aesthetic dentistry. Tooth whitening is a painless procedure that does not require the administration of anesthesia, thus encouraging patients to seek additional aesthetic treatment. Moreover, the noticeable color change observed following whitening procedures may motivate patients to seek further aesthetic treatments (eg, porcelain or resin bo...

This study tested two hypotheses. The first null hypothesis affirms that there is no statistical difference when composite resin is submitted to knoop or vickers microhardness using different testing protocols. The second hypothesis tested the possible influence of elastic modulus of composite resin in microhardness tests. Two nanohybrid composites were used with different viscosity behavior (G...

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...