Results 91 to 100 of about 159,414 (315)

Comparing orthodontic bracket bonding methods based on bracket failure rates

Fogorvosi Szemle, 2020
During modern orthodontic treatment brackets are usually placed directly on the tooth enamel. The bond has to withstand a variety of forces (occlusial, masticatory, as well as forces from the wire itself) in the moist oral environment. Additionally, it’s important that the bracket leaves behind an intact enamel surface after removal. The quality of the
Eszter Svidró, Dóra Iványi, János Horváth   +2 more
openaire   +1 more source

Clinical bond failure rates of adhesive precoated self-ligating brackets using a self-etching primer.

Angle Orthodontist, 2014
OBJECTIVE To comparatively assess the failure rate of adhesive precoated (APC) self-ligating metal brackets bonded with two different enamel surface preparation techniques: self-etching primer (SEP) and conventional two-step etch and primer method (CM).
M. Ozer, M. Bayram, Cagri Dincyurek, Fuat Tokalak   +3 more
semanticscholar   +1 more source

A study on the dimensional design of brackets of multi-tiered wooden pagodas in East Asia

Journal of Asian Architecture and Building Engineering
Methods for dimensional design of brackets of multi-tiered wooden pagodas in East Asia are discussed. The research method for quantifying the brackets design of each wooden five-tiered pagoda by setting a V-value with an initial value equal to 1, and ...
Jiangling Ma, Tomo Inoue, Yida Sun
doaj   +1 more source

Comparison of frictional resistance of esthetic and semi-esthetic self-ligating brackets

Journal of Pharmacy and Bioallied Sciences, 2015
Aim: The frictional resistance encountered during sliding mechanics has been well established in the orthodontic literature, and it consists of complex interactions between the bracket, archwire, and method of ligation the claim of reduced friction with ...
M S Kannan, R V Murali, S Kishorekumar, K Gnanashanmugam, V Jayanth   +4 more
doaj   +1 more source

Adaptive mesh refinement method for optimal control using nonsmoothness detection and mesh size reduction

Journal of the Franklin Institute, 2015
An adaptive mesh refinement method for solving optimal control problems is developed. The method employs orthogonal collocation at Legendre–Gauss–Radau points, and adjusts both the mesh size and the degree of the approximating polynomials in the ...
Fengjin Liu, W. Hager, Anil V. Rao
semanticscholar   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

Advanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat, D. Anjaria, I. Woo, C. Bean, D. Texier, J. C. Stinville   +5 more
wiley   +1 more source

Periodontal Parameters Alterations with Use of Conventional Bracket and Self-ligating Brackets

Orthodontic Journal of Nepal, 2019
Introduction: Different bracket systems are available in the market claiming to have some advantage over the other. Conventional brackets and the self-ligating brackets are the most common.
Manish Bajracharya, Ranjita Shrestha Gorkhali, Abhilasha Khanal, Neesha Shrestha, Umesh Parajuli   +4 more
doaj   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

Advanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink, Saba Saood, Peter Schweizer, Jörg Neugebauer, Gerhard Dehm   +4 more
wiley   +1 more source

Optoelectronic Synaptic Devices Using Molecular Telluride Phase‐Change Inks for Three‐Factor Learning

Advanced Functional Materials, EarlyView.
Optoelectronic synaptic devices based on solution‐processed molecular telluride GST‐225 phase‐change inks are demonstrated for three‐factor learning. A global optical signal broadcast through a silicon waveguide induces non‐volatile conductance updates exclusively in locally electrically flagged memristors.
Kevin Portner, Dhananjeya Kumaar, Giacomo Torti, Killian Keller, Till Zellweger, Florian M. Schenk, Christoph Weilenmann, Daniel Chelladurai, Vara Prasad Jonnalagadda, Ghazi Sarwat Syed, Vanessa Wood, Jürg Leuthold, Alexandros Emboras, Maksym Yarema, Mathieu Luisier   +14 more
wiley   +1 more source