Results: 7

Effect of diode laser irradiation on the bond strength of polymerized non-simplified adhesive systems after 12 months of water storage

J. appl. oral sci; 27 (), 2019
Abstract Objectives: The aim of this in vitro study was to evaluate the bonding strength of non-simplified dentin bonding systems (DBS) to dentin irradiated with a diode laser (970 nm) immediately and after 12 months of water storage following either primer or bond application. Material and methods: Th...

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 ...

Structural and mechanical properties of a giomer-based bulk fill restorative in different curing conditions

J. appl. oral sci; 26 (), 2018
ABSTRACT Objective: The main goal of this study was to compare the polymerization degree of bulk-fill giomer resin cured with three different light-curing units (LCUs): a polywave third-generation (Valo); a monowave (DemiUltra: DU); and a second-generation LED (Optima 10: Opt) LCUs by using structural a...

Minimization of polymerization shrinkage effects on composite resins by the control of irradiance during the photoactivation process

J. appl. oral sci; 26 (), 2018
Abstract High levels of shrinkage stress caused by volumetric variations during the activation process are one of the main problems in the practical application of composite resins. Objective The aim of this study is to reduce the shrinkage stress and minimize the effects caused by composite resin volu...

Does laser diode irradiation improve the degree of conversion of simplified dentin bonding systems?

J. appl. oral sci; 25 (4), 2017
Abstract Simplified dentin-bonding systems are clinically employed for most adhesive procedures, and they are prone to hydrolytic degradation. Objective This study aimed to investigate the effect of laser diode irradiation on the degree of conversion (DC), water sorption (WS), and water solubility (WSB...

Effects of radiant exposure values using second and third generation light curing units on the degree of conversion of a lucirin-based resin composite

J. appl. oral sci; 25 (2), 2017
Abstract Alternative photoinitiators with different absorption wavelengths have been used in resin composites (RCs), so it is crucial to evaluate the effectiveness of light-curing units (LCUs) on these products. Objective Using Fourier transform infrared analysis (FTIR) in vitro, the effects of varying...

Eficiencia del método de polimerización con microondas en la rehabilitación por prótesis oculares individuales
Effectiveness of microwaves polymerization method in individual ocular prostheses rehabilitation

Rev. cuba. estomatol; 48 (2), 2011
La polimerización con microondas es una nueva forma de llevar a cabo la confección de prótesis oculares individuales, sin embargo son aún insuficientes los estudios que exploren la eficiencia de este método. Se realizó una investigación para determinar el efecto de la polimerización con microonda...