Results: 595

Enhanced bioactive properties of BiodentineTM modified with bioactive glass nanoparticles

J. appl. oral sci; 25 (2), 2017
Abstract Objective To prepare nanocomposite cements based on the incorporation of bioactive glass nanoparticles (nBGs) into BiodentineTM (BD, Septodent, Saint-Maur-des-Fosses Cedex, France) and to assess their bioactive properties. Material and Methods nBGs were synthesised by the sol-gel method. BD ...

Effect of different composite core materials on fracture resistance of endodontically treated teeth restored with FRC posts

J. appl. oral sci; 25 (2), 2017
Abstract Objective This study evaluated the fracture resistance of endodontically treated teeth restored with fiber reinforced composite posts, using three resin composite core build-up materials, (Clearfil Photo Core (CPC), MultiCore Flow (MCF), and LuxaCore Z-Dual (LCZ)), and a nanohybrid composite, ...

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...

Influence of Thermal Cycles Number on Bond Strength of Metallic Brackets to Ceramic

Braz. dent. j; 28 (2), 2017
Abstract The aim of this study was to evaluate the effect of different number of thermal cycles on the shear bond strength (SBS) of metallic orthodontic brackets bonded to feldspathic ceramic by a composite resin. Twenty-five ceramic cylinders were etched with 10% hydrofluoric acid for 60 s and received ...

Effect of Metal Primers on Bond Strength of a Composite Resin to Nickel-Chrome Metal Alloy

Braz. dent. j; 28 (2), 2017
Abstract This study evaluated the effects of three metal primers and one multi-mode adhesive system on the shear bond strength (SBS) of a flowable composite resin to nickel-chrome metal alloy (Ni-Cr). Ninety plates were cast from Ni-Cr and divided in nine groups (n=10). The surfaces were sandblasted with...

Correlación entre el comportamiento térmico y composición de sistemas adhesivos

Se realizó un estudio in vitro donde se evaluaron once sistemas adhesivos, para establecer si las condiciones de trabajo clínico favorecen su eficiencia. Se plantea que los sistemas adhesivos autoacondicionantes presentan menor estabilidad térmica que los convencionales. Determinar el comportamiento t...

Discoloration and force degradation of orthodontic elastomeric ligatures

ABSTRACT OBJECTIVE: The aim of the present study was to evaluate color changes and force degradation of orthodontic elastomeric ligatures in different stretching patterns during a 8-weeks period. METHODS: Two elastomers with the minimum and two with the maximum color changing, and gray elastomers of t...

Does the CO2 laser reduce bond strength in different types of ceramic brackets?

ABSTRACT OBJECTIVE: The aim of this study was to assess in vitro the influence of the CO2 laser and of the type of ceramic bracket on the shear bond strength (SBS) to enamel. METHODS: A total of 60 enamel test surfaces were obtained from bovine incisors and randomly assigned to two groups, according t...

Six-month bracket failure rate with a flowable composite: A split-mouth randomized controlled trial

ABSTRACT INTRODUCTION: The use of flowable composites as an orthodontic bonding adhesive merits great attention because of their adequate bond strength, ease of clinical handling and reduced number of steps in bonding. OBJECTIVE: The aim of this Randomized Controlled Trial was to comparatively evaluat...

Influence of β-tricalcium phosphate of different geometric shape on the morphology of regeneration of experimental defect of compact bone tissue

Actual. osteol; 13 (1), 2017
Purpose: to compare the healing process of a defect of compact bone tissue after the implantation of osteoplastic materials based on β-tricalcium phosphate (“ChronOS™” and “Calc-i-oss®”), which differ by manufacturer, geometrical shape and microscopic structure. Methods: the experiment was pe...