Results 21 to 30 of about 360,909 (306)

An evaluation of the fracture resistance of class 2 amalgam restorations with different cavity designs on maxillary premolars

open access: yesJournal of International Clinical Dental Research Organization, 2010
Aims and Objectives: The aim of this work was to compare the fracture resistance values of "Mesio-occlusal" preparation, "slot" preparation with "conventional grooves," "box-only," and "MOD" preparation.
Kundoor Shashank   +2 more
doaj   +1 more source

Mechanical Competence and Bone Quality Develop During Skeletal Growth. [PDF]

open access: yes, 2019
Bone fracture risk is influenced by bone quality, which encompasses bone's composition as well as its multiscale organization and architecture. Aging and disease deteriorate bone quality, leading to reduced mechanical properties and higher fracture ...
Amling, Michael   +12 more
core   +1 more source

Buoyancy-driven crack propagation: the limit of large fracture toughness [PDF]

open access: yes, 2007
We study steady vertical propagation of a crack filled with buoyant viscous fluid through an elastic solid with large effective fracture toughness. For a crack fed by a constant flux Q, a non-dimensional fracture toughness K=Kc/(3μQm3/2)1/4 describes the
Lister, J.R., Roper, S.M.
core   +1 more source

Delamination resistant composites by interleaving bio-based long-chain polyamide nanofibers through optimal control of fiber diameter and fiber morphology [PDF]

open access: yes, 2020
In this work an innovative electrospinning system is proposed that simultaneously has an adequate temperature resistance, a high increase in mode I (þ51%) and mode II (þ96%) delamination performance and can be commercially produced.
Daelemans, Lode   +5 more
core   +2 more sources

Role of Alcohol in the Fracture Resistance of Teeth [PDF]

open access: yesJournal of Dental Research, 2006
Healthy dentin, the mineralized tissue that makes up the bulk of the tooth, is naturally hydrated in vivo; however, it is known that various chemical reagents, including acetone and ethanol, can induce dehydration and thereby affect its properties. Here, we sought to investigate this in light of the effect of alcohol on the mechanical properties of ...
R K, Nalla   +3 more
openaire   +2 more sources

Evaluation of the Effect of Furcation Perforation on the Fracture Resistance of Endodontically Treated Mandibular Molars [PDF]

open access: yesJournal of Kerman University of Medical Sciences, 2021
Background: Root perforations are among the most common procedural complications during root canal treatment; these complications have a poor prognosis.
Fatemah Khajehzadeh   +5 more
doaj   +1 more source

Small scale fracture behaviour of multilayer TiN/CrN systems: Assessment of bilayer thickness effects by means of ex-situ tests on FIB-milled micro-cantilevers [PDF]

open access: yes, 2016
TiN/CrN multilayered PVD coatings are known to exhibit outstanding micromechanical properties and wear resistance. On the other hand, information on their small scale fracture behaviour is rather scarce.
Jiménez Piqué, Emilio   +5 more
core   +2 more sources

Fracture resistance of endodontically treated teeth after instrumentation with different nickel titanium systems

open access: yesEndodontology, 2020
Aim: To compare the vertical root fractures (VRFs) resistance of teeth instrumented with ProTaper Universal, ProTaper Next, HyFlex CM and HERO Shaper nickel titanium (NiTi) rotary systems and obturated with compatible gutta-percha cones using the single ...
Sameer Ahmed Khan   +5 more
doaj   +1 more source

Fracture Resistance of Compromised Endodontically Treated Teeth Restored with Bonded Post and Cores: An in Vitro Study [PDF]

open access: yes, 2015
Statement of problem: It is unclear which post and core system performs best when bonded to severely compromised endodontically treated teeth. Purpose: The purpose of this study was to investigate the fracture resistance and mode of failure of severely ...
Kontogiorgos, Elias D.   +2 more
core   +2 more sources

Fracture-resistant monolithic dental crowns [PDF]

open access: yesDental Materials, 2016
To quantify the splitting resistance of monolithic zirconia, lithium disilicate and nanoparticle-composite dental crowns.Fracture experiments were conducted on anatomically-correct monolithic crown structures cemented to standard dental composite dies, by axial loading of a hard sphere placed between the cusps.
Yu, Zhang   +4 more
openaire   +2 more sources

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