Results 111 to 120 of about 14,195 (309)

Molar incisor hypomineralisation: current knowledge and practice

International Dental Journal, EarlyView., 2020
Background Molar incisor hypomineralisation (MIH) is a common developmental dental condition that presents in childhood. Areas of poorly formed enamel affect one or more first permanent molars and can cause opacities on the anterior teeth. MIH presents a variety of challenges for the dental team as well as functional and social impacts for affected ...
Helen D. Rodd, Anna Graham, Niecoo Tajmehr, Laura Timms, Noren Hasmun   +4 more
wiley   +1 more source

A Review of Advances in Composite Materials, Structural Optimization, and Machine Learning for Wind Turbine Blades: Challenges and Future Perspectives

Polymer Composites, EarlyView.
Overview of the holistic engineering lifecycle and core research pillars for wind turbine blades. ABSTRACT This paper reviews recent advancements across the lifecycle of wind turbine blades, focusing on three interconnected areas: advanced composites, structural optimization, and machine learning (ML) diagnostics. In materials, we highlight progress in
Kemal Hasirci, Denizhan Yavas, Alaeddin Burak Irez   +2 more
wiley   +1 more source

Effect of hydrogen peroxide application on color and surface roughness of two restorative materials

Brazilian Journal of Oral Sciences, 2017
Aim: This study investigated the effect of an in-office bleaching technique on lightness, color and surface roughness of two commercially available materials: a resin-modified glass-ionomer cement and a nanohybrid resin composite.
Dilcele Silva Moreira Dziedzic, Lucia Helena Ramos da Silva, Bruna Luiza do Nascimento, Marina Samara Baechtold, Gisele Maria Correr, Carla Castiglia Gonzaga   +5 more
doaj   +1 more source

Temporary zinc oxide-eugenol cement: eugenol quantity in dentin and bond strength of resin composite

, 2013
Uptake of eugenol from eugenol-containing temporary materials may reduce the adhesion of subsequent resin-based restorations. This study investigated the effect of duration of exposure to zinc oxide–eugenol (ZOE) cement on the quantity of eugenol ...
Malinovskii, Vladimir, Lussi, Adrian, Koch, Tamara, Flury, Simon, Peutzfeldt, Anne, Häner, Robert   +5 more
core   +1 more source

High‐strength composites by thiocracking of high‐polypropylene‐content mixed waste

Polymer International, EarlyView.
Mixed plastic waste made up of polystyrene and polypropylene was reacted with elemental sulfur to give high‐strength composites. Abstract Mixed‐material municipal waste poses a persistent end‐of‐life management challenge because the heterogeneous composition limits efficient separation and recycling. After disposal, mixed‐material waste often fragments
Athira Babu, Rhett C. Smith
wiley   +1 more source

Effect of different surface treatments on microtensile bond strength of two types of composite substructures with ceramic by resin cements

Caspian journal of dental research, 2021
Introduction: The aim of this study was to investigate the effect of different surface treatments on the microtensile bond strength (µTBS) of two types of composite substructures with Vita Mark II ceramics by resin cement. Materials & Methods: Sixty-four
Negin Tabari, Seyedkamal Seyedmajidi, Toloo Jafari, Soraya Khafri, Homayoon Alaghehmand   +4 more
doaj  

Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction

steel research international, EarlyView.
Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo, Anumoy Ganguly, Lucas Varoto, Tim M. Schwarz, Jean‐Baptiste Letz, Ubaid Manzoor, Laurine Choisez, Dierk Raabe, Isnaldi R. Souza Filho   +8 more
wiley   +1 more source

Foamed Concrete Sealing Materials for Coal Seam Gas Drainage Boreholes: A Review

Safety Science and Technology, EarlyView.
This study investigates the sealing performance of foamed concrete in gas drainage boreholes. By comparing leakage pathways (a, c) with sealed systems (b, d), the research demonstrates how foamed concrete effectively fills mining‐induced fractures and resists deformation.
Jiaxing Zou, Erlei Su, Huanchun Liu, Xiangjun Chen, Lin Wang, Haidong Chen, Lin Li   +6 more
wiley   +1 more source

Shear bond strength of self-adhesive resin cement to 3D-milled resin treated with universal adhesive

Brazilian Dental Science
Objective: To investigate the influence of 3D-milled composite resin surface pre-treatment with universal adhesive to shear bond strength (SBS) of self-adhesive resin cement.
Laísa Araujo Cortines Laxe, Jordana Dias Martins, Mônica Calixto de Andrade, Hector Reynaldo Meneses Costa, Carlos Eduardo Sabrosa   +4 more
doaj   +1 more source

Performance analysis of strengthening reinforced concrete beams under pure torsion using galvanized steel sheets: Experimental and numerical investigation

Structural Concrete, EarlyView.
Abstract Reinforced concrete (RC) beams can be subjected to torsion, and failure due to torsion is brittle and poses a significant risk to occupants. Moreover, strengthening of existing RC beams in torsion may be required due to the upgrade of the structures or as part of structural rehabilitation.
Ahmed Hamoda, Mizan Ahmed, Ahmad G. Saad, Aref A. Abadel, Saad A. Yehia   +4 more
wiley   +1 more source