Results: 162

Effect of dentin preparation mode on the bond strength between human dentin and different resin cements

Braz. dent. j; 29 (3), 2018
Abstract The aim was to evaluate the influence of different dentin preparation mode in the smear layer characteristics (SL), hybrid layer (HL), and microtensile bond strength (µTBS) to dentin with two resin cements. The occlusal dentin of 120 third molars was exposed. The teeth were divided into 4 group...

Can the application of multi-mode adhesive be a substitute to silicatized/silanized y-tzp ceramics?

Braz. dent. j; 29 (3), 2018
Abstract This study evaluated the effectiveness of a multi-mode adhesive (SBU-Scotch Bond Universal/3M) as a substitute for silica coating and silane application on the bonding of zirconia ceramics to resin cement. One-hundred and twenty sintered zirconia ceramic blocks (5 x 5 x 5 mm) were obtained, fini...

Polymerization shrinkage of bulk fill composites and its correlation with bond strength

Braz. dent. j; 29 (3), 2018
Abstract The present study aimed to evaluates polymerization shrinkage (PS) using microcomputed tomography (μCT) and microtensile bond strength (μTBS) in bulk fill composites (BFC) and conventional class I restorations as well as the correlation between these factors. Class I cavities (4 x 5 x ...

Bond Strength and Cytotoxicity of a Universal Adhesive According to the Hybridization Strategies to Dentin

Braz. dent. j; 29 (1), 2018
Abstract This study evaluated application protocol (etch-and-rinse/ER and self-etching/SE) and dentin wettability (wet and dry) on microtensile bond strength (μTBS) and transdentinal cytotoxicity of ScotchbondTM Universal (SU) adhesive system. The μTBS values and fracture mode were registered 2...

Sistema adesivo universal: análise da interface adesiva e degradação colagenolítica em dentina submetida à diferentes protocolos de condicionamento ácido

O objetivo desse estudo foi analisar a interface adesiva do sistema adesivo Single Bond Universal (SBU) em dentina submetida à diferentes protocolos de condicionamento ácido em 24 h e 12 meses. E a degradação colagenolítica (DC) mediada por metaloproteinases (MMPs) e Catepsina-K (CAT-K) em tempo ime...

Influência da aplicação de um sistema adesivo na resistência de união entre resinas bulk fill flow e resina nanoparticulada em reparos

O objetivo desta pesquisa foi avaliar a influência da utilização ou não do bond do sistema adesivo Adper Scotchbond Multiuso(A) e o bond Gluma da Heraeus(G) na resistência de união entre as resinas do tipo flow Filtek Bulk Fill Flow(F) e X-tra base (X) como base e uma convencional nanoparticulada Z...

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 ...

Influence of ceramic material, thickness of restoration and cement layer on stress distribution of occlusal veneers

Abstract The aim of this study was to evaluate stress distribution in an occlusal veneer according to the restorative material, restoration thickness, and cement layer thickness. A tridimensional model of a human maxillary first molar with an occlusal veneer preparation was constructed using a modeling s...

Influence of ethanol-wet dentin, adhesive mode of application, and aging on bond strength of universal adhesive

Abstract The aim of this study was to evaluate the effect of ethanol on the bond longevity of a universal adhesive system to bovine dentin, under different modes of adhesive application and artificial aging. Bovine dentin was exposed, and the smear layer was standardized by sandpaper polishing. Specimens...

Long-term bonding efficacy of adhesives containing benzodioxioles as alternative co-initiators

Abstract This study evaluated the three-year lifespan of the bond to dentin of experimental self-etch adhesives containing benzodioxole derivatives - 1,3-benzodioxole (BDO) and piperonyl alcohol (PA) - as co-initiator alternative to amines. Adhesive resins were formulated using Bis-GMA, TEGDMA, HEMA, cam...