Results 21 to 30 of about 2,886,370 (294)

Fracture resistance of endodontically treated teeth, restored with two post-core systems in different post space diameters (in vitro study)

open access: yesBMC Oral Health, 2023
Background Fracture resistance of post-core restoration depends on the design of the post, post diameter, post length, the type of adhesive cement used along with material of the core.
Kholoud B. Saad   +2 more
doaj   +1 more source

Impact and fracture resistance of an experimental acrylic polymer with elastomer in different proportions

open access: yesMaterials Research, 2009
The purpose of this study was to evaluate the impact and fracture resistance of acrylic resins: a heat-polymerized resin, a high-impact resin and an experimental polymethyl methacrylate with elastomer in different proportions (10, 20, 40 and 60%).
Fernanda de Carvalho Panzeri Pires-de-Souza   +4 more
doaj   +1 more source

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

Toughening materials: enhancing resistance to fracture [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2021
It has been said that ‘God invented plasticity, but the Devil invented fracture!’ Both mechanisms represent the two prime modes of structural failure, respectively, plastic collapse and the rupture/breaking of a component, but the concept of developing materials with enhanced resistance to fracture can be difficult. This is because
openaire   +4 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

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

Fracture Resistance and Fracture Behaviour of Monolithic Multi-Layered Translucent Zirconia Fixed Dental Prostheses with Different Placing Strategies of Connector: An in vitro Study

open access: yesClinical, Cosmetic and Investigational Dentistry, 2022
Nada Heidari,1 Rasha Amawi,1 Przemek Seweryniak,2 Fahad Bakitian,3 Per Vult von Steyern1 1Department of Materials Science and Technology, Malmö University, Malmö, Sweden; 2Commercial Dental Laboratory, Malmö, Sweden; 3Department of Restorative Dentistry,
Heidari N   +4 more
doaj  

Anisotropic fracture resistance of avian eggshell

open access: yesJournal of the Mechanical Behavior of Biomedical Materials, 2020
In order to understand the fracture toughness anisotropy of avian eggshells, we have investigated eggshells of the emu (Dromaius novaehollandiae) whereby the large size (~13 cm × 9.5 cm) enabled the fabrication of beam samples in various orientations. The emu eggshell was found to have a hierarchical microstructure similar to chicken eggshell, with the
Tanaka, CB   +4 more
openaire   +3 more sources

Evaluation of the fracture resistance of three different core materials used for Nayyar dowel-core technique in restoring endodontically treated teeth: An in vitro study

open access: yesJournal of Oral Research and Review, 2020
Background: Endodontically treated teeth have increased susceptibility to fracture. To promote the fracture resistance, reinforcing the endodontically treated teeth is of utmost importance.
Kakollu Sudha   +5 more
doaj   +1 more source

Effect of cavity preparation design and ceramic type on the stress distribution, strain and fracture resistance of CAD/CAM onlays in molars

open access: yesJournal of Applied Oral Science, 2018
Objective This study aimed to evaluate the effect of the cavity preparation and ceramic type on the stress distribution, tooth strain, fracture resistance and fracture mode of human molar teeth restored with onlays.
Ana Luíza Serralha de Velloso VIANNA   +5 more
doaj   +1 more source

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