Results 81 to 90 of about 2,714,278 (296)

Effect of MTA and Portland Cement on Fracture Resistance of Dentin

Journal of Dental Research, Dental Clinics, Dental Prospects, 2013
Background and aims. It is important to evaluate the effects of endodontic materials on tooth structures to avoid endodontic treatment failure. The aim of the present study was to investigate the effect of mineral trioxide aggregates (MTA) and Portland
Maryam Forghani, Maryam Bidar, Fatemeh Shahrami, Mahmoud Bagheri, Maryam Mohammadi, Niloufar Attaran Mashhadi   +5 more
doaj   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Effect of preparation design on the fracture resistance and fracture patterns of 3D printed one-piece endodontic crowns. [PDF]

STATEMENT OF PROBLEM The impact of various preparation designs on the fracture resistance and fracture type of mandibular premolars restored with 3 dimensionally (3D) printed, 1-piece endodontic crowns remains unclear.
Yilmaz, Burak, Bahadır, Hasibe Sevilay, Bulut, Ali Can   +2 more
core   +1 more source

In Vitro Assessment of the Fracture Resistance of Different Prosthodontic Materials for Fixed Dental Prostheses

Journal of Pharmacy and Bioallied Sciences
Background: Fixed dental prostheses (FDPs) are commonly used in prosthodontics to restore missing teeth and improve oral function and esthetics. The selection of prosthodontic materials significantly impacts the fracture resistance of FDPs, thus ...
Sherif El Sayed Sultan, Nawaf Hussain Saif Almuhyi, Khalid Maziad Alzabni, Rayan Hamad Qubayl Alruwaili   +3 more
doaj   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

A multicenter survey on profile of care for hip fracture: predictors of mortality and disability.

, 2010
Summary Because delay in time to surgery beyond 24–48 h has been observed in many studies to be associated with adverse outcomes, a survey in nine centers in Italy was undertaken to examine the impact of time to surgery on mortality and disability at 6 ...
Saugo M, Siviero P, Hip Fracture Study Group, Besdine RW, Maggi S, Wetle T, CREPALDI, GAETANO   +6 more
core   +1 more source

Fracture resistance of chairside cad/cam advanced lithium disilicate maxillary canine veneers with different incisal edge designs

Saudi Dental Journal
This study aimed to evaluate the fracture resistance of maxillary veneers with feather edge, butt-joint and palatal chamfer and traditional full coverage crowns fabricated out of chairside CAD/CAM advanced lithium disilicate and virgilite.
Silvia Rojas-Rueda, Hidehiko Watanabe, Salah Abuhammoud, Carlos A. Jurado, Abdullah Alshehri, Chin-Chuan Fu, Daniel Vegh, Khalid M. Aldosary, Hamad Algamaiah, Abdulrahman Alshabib   +9 more
doaj   +1 more source

Using fracture energy to characterize the hot mix asphalt cracking resistance based on the directtensile test

Revista Facultad de Ingeniería Universidad de Antioquia, 2012
Cracking is currently one of the most common distresses in hot mix asphalt (HMA) pavements, often costing the highway agencies million of dollars in maintenance and rehabilitation activities.
Lubinda F. Walubita, Allex E. Alvarez, Flor Sanchez   +2 more
doaj   +1 more source

Molecular Dynamics Studies of Shape Memory Polymers: From Bead–Spring Models to Atomistic Simulations

Advanced Engineering Materials, EarlyView.
Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley   +1 more source

Effect of length and diameter of fiber reinforced composite post (FRC) on fracture resistance of remaining tooth structure [PDF]

Journal of Dental Materials and Techniques, 2013
Introduction: Post and core has been considered for endodontically treated tooth, especially in cases with severe damage crowns. Recently fiber reinforced composite posts (FRC post) have been used in the treatment of endodontically treated teeth. Because
Mahdiyeh seifi, Bijhan Heidari, Nafiseh Asadzadeh Aghdaee, Saeid Ebrahimzadeh   +3 more
doaj