Results: 3070

Ilex paraguariensis extracts extend the lifespan of Drosophila melanogaster fed a high-fat diet

Braz. j. med. biol. res; 51 (2), 2018
Studies have suggested that total energy intake and diet composition affect lifespan and ageing. A high-fat diet induces oxidative stress and affects the development of diseases. In contrast, antioxidants are capable of reducing its harmful effects. Yerba mate beverages are an important source of antioxi...

Two novel Mg(II)-based and Zn(II)-based complexes: inhibiting growth of human liver cancer cells

Braz. j. med. biol. res; 51 (2), 2018
Two new Mg(II)-based and Zn(II)-based coordination polymers, {[Mg3(BTB)(DMA)4](DMA)2}n (1, H3BTB=1,3,5-benzenetrisbenzoic acid, DMA=N,N-dimethylacetamide) and {(H2NMe2)2[Zn3(BTB)2(OH)(Im)](DMF)9(MeOH)7}n (2, Im=imidazole, DMF=N,N-dimethylformamide), have been successfully synthesized and structurally cha...

Pleurotus spp. cultivation on Brachiaria sp. straw treatment with alkaline water

Braz. j. microbiol; 49 (supl.1), 2018
Abstract The aim of this research was to evaluate the efficiency of aqueous alkali-treated Brachiaria straw for the cultivation of appropriate species of oyster mushroom. The substrate used in the cultivation of various Pleurotus spp. was soaked for 20 min by using two different procedures: (i) 0.5-2.0% ...

Adhesión posclareamiento y el efecto de la aplicación de antioxidantes
Postbleaching bonding and the effect of applying antioxidants

Con el avance en las técnicas de blanqueamiento dental, el advenimiento de nuevos biomateriales capaces de lograr resultados estéticos aceptables por los pacientes; sabiendo que en la operatoria dental muchos autores priorizan iniciar dicho tratamiento restaurador con el aclareamiento dental. Como cons...

Effect of erosive challenges on deciduous teeth undergoing restorative procedures with different adhesive protocols - an in vitro study

J. appl. oral sci; 26 (), 2018
ABSTRACT Objective: To evaluate the effect of erosive challenges on the tooth- restoration interface of deciduous teeth treated with different adhesive protocols. Material and Methods: Deciduous molars were cut mesiodistally, then embedded, abraded and polished (n=80). Samples were randomly divided acc...

Randomized clinical trial of encapsulated and hand-mixed glass-ionomer ART restorations: one-year follow-up

J. appl. oral sci; 26 (), 2018
Abstract Objective This prospective, randomized, split-mouth clinical trial evaluated the clinical performance of conventional glass ionomer cement (GIC; Riva Self-Cure, SDI), supplied in capsules or in powder/liquid kits and placed in Class I cavities in permanent molars by the Atraumatic Restorative T...

Effects of three silane primers and five adhesive agents on the bond strength of composite material for a computer-aided design and manufacturing system

J. appl. oral sci; 26 (), 2018
Abstract Objective The objective of this study was to evaluate the effects of combinations of silane primers and adhesive agents on the bond strength of a composite block for a computer-aided design and manufacturing system. Material and Methods Three silane primers [Clearfil Ceramic Primer (CP), Super...

Physicochemical properties of calcium silicate-based formulations MTA Repair HP and MTA Vitalcem

J. appl. oral sci; 26 (), 2018
Abstract Objective This study aimed to analyze the following physicochemical properties: radiopacity, final setting time, calcium release, pH change, solubility, water sorption, porosity, surface morphology, and apatite-forming ability of two calcium silicate-based materials. Material and methods We te...

Two mechanisms of oral malodor inhibition by zinc ions

J. appl. oral sci; 26 (), 2018
Abstract Objectives The aim of this study was to reveal the mechanisms by which zinc ions inhibit oral malodor. Material and Methods The direct binding of zinc ions to gaseous hydrogen sulfide (H2S) was assessed in comparison with other metal ions. Nine metal chlorides and six metal acetates were exami...

Neurosensory analysis of tooth sensitivity during at-home dental bleaching: a randomized clinical trial

J. appl. oral sci; 26 (), 2018
Abstract Objective The objective of this study was to evaluate dental sensitivity using visual analogue scale, a Computerized Visual Analogue Scale (CoVAS) and a neurosensory analyzer (TSA II) during at-home bleaching with 10% carbamide peroxide, with and without potassium oxalate. Materials and Method...