Results 41 to 50 of about 734,880 (214)

Evaluation of Surface Microhardness of Silver and Zirconia Reinforced Glass-ionomers with and without Microhydroxyapatite

open access: yesJournal of Dental Biomaterial, 2017
Statement of problem: Hardness of restorative materials like glass-ionomer is an important factor in the longevity of restoration. Objectives: The aim of this study was to evaluate the microhardness of glass-ionomer modified with different materials ...
Sharafeddin F   +3 more
doaj  

Correlated Polymer‐Proton Hopping Enables Water‐Independent Fast Proton Transport in Poly(Ionic Liquid) Membranes

open access: yesAdvanced Science, EarlyView.
A polymer chain in motion: backbone, ring, and counterion dynamics interlock across timescales to relay protons through poly(ionic liquid) membranes. ABSTRACT Polymer electrolyte membranes composed of ionic liquids (IL), capable of conducting protons efficiently at elevated temperatures, without external humidification, could transform fuel cell ...
Keenan Smith   +11 more
wiley   +1 more source

Tensile bond strength between different glass ionomer cement and composite resin using three adhesive systems
Avaliação da resistência de união interfacial entre diferentes cimentos de ionômero de vidro e resina composta, usando três sistemas adesivos

open access: yesSemina: Ciências Biológicas e da Saúde, 2005
The purpose of this study was to evaluate the tensile bond strength (TBS) among a Composite Resin (Filtek Z250) and six conventional Glass Ionomer Cements, three used for lining (Bioglass F, Vidrion F and Glass Ionomer L.C.) and three for restorations ...
Patrícia Dias   +4 more
doaj   +1 more source

Plasma‐Engineered Polyethylene‐Reinforced Anion Exchange Membranes With Low Ionic Resistance and Low Hydrogen Crossover for Water Electrolysis

open access: yesAdvanced Science, EarlyView.
Oxygen plasma functionalizes porous polyethylene, enabling complete hydrocarbon ionomer infiltration within a dense submicron pore network. The resulting reinforced composite membrane simultaneously enhances mechanical robustness and suppresses hydrogen permeation at ultrathin thickness. An integrated performance index confirms the effectiveness of the
Sungjun Kim   +6 more
wiley   +1 more source

Formation and structure of ionomer complexes from grafted polyelectrolytes [PDF]

open access: yes, 2011
We discuss the structure and formation of Ionomer Complexes formed upon mixing a grafted block copolymer (poly(acrylic acid)-b-poly(acrylate methoxy poly(ethylene oxide)), PAA21-b-PAPEO14) with a linear polyelectrolyte (poly(N-methyl 2-vinyl pyridinium ...
Arie de Keizer   +8 more
core   +1 more source

Effects of etching and adhesive applications on the bond strength between composite resin and glass-ionomer cements

open access: yesJournal of Applied Oral Science, 2012
OBJECTIVE: This study determined the effects of various surface treatment modalities on the bond strength of composite resins to glass-ionomer cements.
Tijen Pamir   +2 more
doaj   +3 more sources

THE EFFECT OF THE APPLICATION OF 20% CARBAMIDE PEROXIDE ON THE GLASS IONOMER CEMENT TYPE II SURFACE HARDNESS

open access: yesJournal of Dentistry Indonesia, 2015
In dental bleaching, carbamide peroxide is usually used at concentration of 10%, 15%, to 20%. The result of our previous study showed that the application of 10% and 15% carbamide peroxide bleaching agent has increased the surface hardness of glass ...
Ali Noerdin   +2 more
doaj   +1 more source

Aryl‐Tethered Pendant Sterically Shielded Imidazoliums for Durable Anion Exchange Membranes

open access: yesAdvanced Science, EarlyView.
An aryl‐tethered, sterically shielded imidazolium architecture protects cationic sites from hydroxide attack while avoiding vulnerable benzylic cation–polymer linkages. Incorporated into poly(arylimidazolium) membranes, this dual‐protection design enhances alkaline and oxidative durability and supports prolonged alkaline water electrolysis, offering a ...
Jinggui Lei   +8 more
wiley   +1 more source

Comparison of the amount of fluoride release from nanofilled resin modified glass ionomer, conventional and resin modified glass ionomer cements.

open access: yesFrontiers in Dentistry, 2013
To investigate and compare the amount of fluoride release of conventional, resin modified and nanofilled resin modified glass ionomer cements.Tablets of glass-ionomer cements were immersed in deionized water and incubated at 37°C.
Sumitha Upadhyay   +2 more
doaj  

Comparison of shear bond strength of aesthetic restorative materials

open access: yesContemporary Clinical Dentistry, 2012
Aim : The present study was conducted to determine and compare the shear bond strengths of Conventional glass ionomer; Resin-modified glass ionomer; Polyacid-modified composite and Composite Resin, and to assess and determine the mode of failure ...
B P Suryakumari Nujella   +4 more
doaj   +1 more source

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