Results: 595

Fracture load and shear stress of prefabricated glass fiber posts

Braz. j. oral sci; 18 (), 2019
Aim: This study evaluated the fracture load and pattern failure of different prefabricated glass fiber posts (GFPs) of the same diameter. Methods: Seventy-eight (n=13 for six groups) GFPs of 1.6 mm coronal diameter of different brands were evaluated— Exacto (Angelus), Power Post (BM4), White Post DC (F...

Comparative study of four different types of intraperitoneal mesh prostheses in rats

Acta cir. bras; 34 (7), 2019
Abstract Purpose: To compare four types of mesh regarding visceral adhesions, inflammatory response and incorporation. Methods: Sixty Wistar rats were divided into four groups, with different meshes implanted intraperitoneally: polytetrafluoroethylene (ePTFE group); polypropylene with polydioxanone and...

Surface and vertical dimensional changes of mineral trioxide aggregate and biodentine in different environmental conditions

J. appl. oral sci; 27 (), 2019
Abstract Surface changes in biological environments are critical for the evaluation of physical and biological activity of biomaterials. Objective: This study investigated surface alterations of calcium silicate-based cements after exposure to different environments. Material and Methods: Forty-eight cyl...

Shrinkage stress and elastic modulus assessment of bulk-fill composites

J. appl. oral sci; 27 (), 2019
Abstract Bulk-fill composites were introduced in dentistry to accelerate clinical procedures while providing adequate outcomes. Concerns regarding the use of bigger composite increments rely on the polymerization shrinkage and shrinkage stress, which may generate gaps on the adhesive interface and result...

Effects of in-office bleaching agent combined with different desensitizing agents on enamel

J. appl. oral sci; 27 (), 2019
Abstract Objective: To analyze color change, microhardness and chemical composition of enamel bleached with in-office bleaching agent with different desensitizing application protocols. Materials and Methods: One hundred and seventeen polished anterior human enamel surfaces were obtained and randomly d...

Impacto de la luz operatoria sobre las resinas compuestas: evaluación de su contracción
The impact of operative light on composite resins: evaluation of their shrinkage

El objetivo de este estudio fue analizar el comportamiento, contracción volumétrica, de diferentes resinas compuestas de fotopolimerización, expuestas a variadas condiciones de incidencia lumínica. Se tomaron volúmenes estandarizados de 7 resinas compuestas (microhíbridas y nanohíbridas y nanopart...

Mechanical and optical properties of conventional restorative glass-ionomer cements - a systematic review

J. appl. oral sci; 27 (), 2019
Abstract Objectives To perform a systematic review of test methodologies on conventional restorative glass-ionomer cement (GIC) materials for mechanical and optical properties to compare the results between different GICs. Material and Methods Screening of titles and abstracts, data extraction, and q...

Fluoride release and uptake in enhanced bioactivity glass ionomer cement ("glass carbomer™") compared with conventional and resin-modified glass ionomer cements

J. appl. oral sci; 27 (), 2019
Abstract Objectives To study the fluoride uptake and release properties of glass carbomer dental cements and compare them with those of conventional and resin-modified glass ionomers. Materials and Methods Three materials were used, as follows: glass carbomer (Glass Fill), conventional glass ionomer (C...

Resin-modified glass ionomer containing calcium glycerophosphate: physico-mechanical properties and enamel demineralization

J. appl. oral sci; 27 (), 2019
Abstract Sources of calcium and phosphate have been added to dental restorative materials to improve their anticaries effect. Objective This study evaluated the effect of adding calcium glycerophosphate (CaGP) to resin-modified glass ionomer cement (RMGIC) on the physico-mechanical properties, ion rele...

Influence of the composition and shades of ceramics on light transmission and degree of conversion of dual-cured resin cements

J. appl. oral sci; 27 (), 2019
Abstract Objective Since the transmittance of ceramics can influence the degree of conversion (DC) of resin cements, ceramics composition and shade should be considered in the selection of resin cement. This in vitro study aimed to evaluate the effect of the transmittance of different composition, opac...