Results: 22

The use of flowable bulk-fill resin composite entire cavity is a less time-consuming approach for occluso-proximal restorations in primary teeth

Aim: To comparethe time required to perform occluso-proximal restorations using different flowable resin composites (as an intermediate layer or entire cavity)with conventional resin composite (incremental technique). Materials and methods: Two standardized cavities were prepared on occlu...

Como as características dos LEDs de segunda e terceira geração podem influenciar a dureza de compósitos restauradores: uma revisão da literatura

RFO UPF; 26 (2), 2021
Objetivo: Várias fontes de luz têm sido utilizadas desde que os materiais fotoativados foram introduzidos na odontologia. Diodos emissores de luz (LEDs) se popularizaram como a principal opção para a polimerização dos materiais restauradores. O objetivo nessa revisão da literatura foi avaliar a in...

Effect of Light Sources on Bond Strength of Different Composite Resins Repaired with Bulk-Fill Composite

Odovtos (En línea); 23 (1), 2021
Abstract: The aim of this study was to evaluate and compare the effects of different light sources on shear bond strength when bulk-fill composite was used for the repair of different composite resins. A total of 126 samples made from six resin composites with different properties were aged (thermal-cycl...

Comparative Evaluation of Flexural Strength of Two Newer Composite Resin Materials: An in Vitro Study

ABSTRACT Objective: To evaluate in vitro the flexural strength of two newer composite resin materials. Material and Methods: Twenty-four samples were equally divided into two groups: G1 - Brilliant EverGlow and G2: Brilliant NG. The rectangular blocks of 25 mm in length, 2 mm in width and thickness wer...

Resistência à flexão de duas resinas compostas diretas após diferentes métodos de polimerização

RFO UPF; 24 (2), 2019
Objetivo: avaliar a influência de diferentes modos de polimerização sobre a resistência à flexão de três pontos de duas resinas compostas. Métodos: foram confeccionadas 88 amostras, sendo divididas em dois grupos, conforme a resina composta utilizada: Filtek Z350 XT e Forma. Os grupos foram subdi...

Influence of activation mode, fatigue, and ceramic interposition on resin cements' diametral tensile strength

Abstract This study evaluated the influence of activation modes, on Diametral Tensile Strength (DTS) of dual cured resin cements subjected to a Mechanical Fatigue test (MF). Four dual-cured resin cements (RelyX UNICEM [U], RelyX ARC [A], ENFORCE [E] and Nexus 2 [N]) were activated by three different curi...

Otimização do procedimento de colagem de braquetes ortodônticos utilizando um recipiente fotoprotetor: passo a passo

RFO UPF; 23 (3), 2018
A resina composta fotoativável é usualmente utilizada para o procedimento de colagem de braquetes ortodônticos. No entanto, seu uso requer cuidados antes da fotoativação, pois sua polimerização pode ocorrer precocemente por outras fontes de luz, que não a de um fotoativador dentário (e.g., luz a...

Light curing resin cements containing iodonium salts promote suitable apical bonding of posts to radicular dentin

Abstract The aim of this study was to analyze the efficiency of experimental light-curing resin cements (ERCs) with a ternary photo-initiator system containing diphenyliodonium hexafluorphosphate (DPI) and different amines on retention of glass-fiber posts to dentin (GFP). ERCs formulations: a 1:1 mass r...

Influence of preheating and post-curing on a novel fiber-reinforced composite post material

Abstract The aim of this study was to investigate the influence of preheating and post-curing methods on diametral tensile strength (DTS), flexural strength (FS), knoop microhardness (KHN), and degree of conversion (DC) of an experimental fiber-reinforced composite (FRC). Specimens (30 wt% of 3-mm-short ...

Multiple-peak and single-peak dental curing lights comparison on the wear resistance of bulk-fill composites

Abstract: The effects of tooth brushing could affect the long-term esthetic outcome of composite restorations. This study evaluated the effect of two different emission spectrum light-curing units on the surface roughness, roughness profile, topography and microhardness of bulk-fill composites after in v...