Results: 10

Correlation between mechanical properties and stabilization time of chemical bonds in glass-ionomer cements

Abstract The objective was to evaluate the compressive strength (CS), diametral tensile strength (DTS), flexural strength (FS), and Knoop microhardness (KH) of different conventional restorative glass-ionomer cements (GICs) and to correlate these mechanical properties (MP) with the stabilization time (ST...

Effect of the ceramic translucency on the long-term water sorption and solubility of resin cements

Braz. j. oral sci; 19 (), 2020
Aim: The aim of this study was to evaluate the influence of the translucency of ceramic on water sorption and solubility of resin cements over time. Methods: Lithium disilicate ceramic slides (15x15x1 mm), A1 in color and with different translucencies (high-medium-low) were manufactured; and a glass slid...

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...

Effect of ultrasonic and Nd: Yag laser activation on irrigants on the push-out bond strength of fiber post to the root canal

J. appl. oral sci; 27 (), 2019
Abstract Objective: This in vitro study aimed to compare the efficacy of irrigants using various irrigation activation methods to the push-out bond strengths of fiber post to root canal luted with self-adhesive resin cement (SARC). Methodology: Forty-eight decoronated human canines were used. The speci...

Effect of different bonding protocols on degree of monomer conversion and bond strength between orthodontic brackets and enamel

Abstract The objective of the present study was to evaluate the effect of different surface treatments and polymerization protocols on the bond strength of brackets to enamel, and the degree of conversion of the bonding agents. 120 bovine crowns were embedded in acrylic resin blocks and sanded. Next, the...

Is the bonding of self-adhesive cement sensitive to root region and curing mode?

J. appl. oral sci; 25 (1), 2017
Abstract Objectives To evaluate the influence of two curing techniques on the degree of conversion (DC) of resin cements and on bond strength (BS) of fiber posts in different regions of root dentin. Material and Methods Twenty single-rooted premolars were endodontically treated, and the post spaces w...

Efeito de adição de rodamina B e fluoresceína sódica a sistemas adesivos não simplificados: aspectos fotofísicos e físico-químicos

A adição de corantes fluorescentes a adesivos odontológicos possibilita a investigação da distribuição espacial desses materiais na interface dente-restauração, utilizando-se a microscopia confocal de varredura a laser (MCVL). A literatura indica falta de padronização na aplicação de agentes...

Longevity of metal-ceramic crowns cemented with self-adhesive resin cement: a prospective clinical study

Abstract Resin cements are often used for single crown cementation due to their physical properties. Self-adhesive resin cements gained widespread due to their simplified technique compared to regular resin cement. However, there is lacking clinical evidence about the long-term behavior of this material....

Caracterização físico-química, mecânica e biológica de cimento autoadesivo aditivado com nanotubos de dióxido de titânio

O objetivo desse estudo foi realizar a caracterização do cimento resinoso autoadesivo RelyX U200 aditivado de nanotubos de dióxido de titânio (nt-TiO2) em diferentes concentrações (0,3, 0,6, e 0,9% em peso) quanto às suas propriedades físico-químicas, mecânicas e biológica. Duas condições de...

Efeito de um sistema adesivo e de um cimento de ionômero de vidro modificado por resina na resistência ao cisalhamento do amálgama aderido à dentina de dentes decíduos e permanentes
Effect of adhesive and glass ionomer cement on shear bond strength of amalgam bonded to primary and permanent dentin

A união do amálgama de prata à dentina de dentes decíduos e permanentes, usando dois diferentes agentes de união, um cimento de ionômero de vidro modificado por resina (Fuji II LC Improved) e um sistema adesivo (Scotchbond Multi-Uso Plus) foi analisada através do ensaio de cisalhamento. O esmalte ...