Results 21 to 30 of about 355,356 (281)

Effect of thermomechanical loading on fracture resistance and failure mode of new pressable zirconia-reinforced lithium disilicate onlay restoration [PDF]

Journal of Dental Research, Dental Clinics, Dental Prospects
Background. Insufficient information exists regarding the fracture resistance and failure pattern of newly developed zirconia-reinforced lithium disilicate (ZL, Vita Ambria) onlays.
Walid A. Abdelhady, Mohamed F. Metwally, Khaled M. Haggag   +2 more
doaj   +1 more source

Fracture resistance via topology optimization

Structural and Multidisciplinary Optimization, 2007
The fracture resistance of structures is optimised using the level-set method. Fracture resistance is assumed to be related to the elastic energy released by a crack propagating in a normal direction from parts of the boundary which are in tension, and is calculated using the virtual crack extension technique.
Challis, Vivien J., Roberts, Anthony P., Wilkins, Andrew H.   +2 more
openaire   +3 more sources

Fracture resistance of veneers in premolars [PDF]

European Journal of Dentistry, 2018
ABSTRACT Objective: The purpose of the study was to compare the fracture resistance of ceramic veneers and composite resin veneers with and without dental preparation. Materials and Methods: Forty freshly extracted mandibular premolars were selected and randomly assigned into four groups (n = 10): Group NPR = no dental preparation and direct ...
Linhares, Ludmilla Azevedo, Pottmaier, Larissa Fernanda, Lopes, Guilherme Carpena   +2 more
openaire   +2 more sources

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

, 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

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

Journal 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, Dayanand Gopalrao Chole, Banthu Ranga   +2 more
doaj   +1 more source

Fracture resistance of tooth restored with four glass fiber post systems of varying surface geometries: an in vitro study [PDF]

, 2015
Background: The purpose of this study was to relate the fracture resistance of endodontically treated teeth in relation to post geometry. Material and Methods: Forty single rooted mandibular premolars were instrumented by step - back technique and ...
Balagopal, Sunderasan, Jayasenthil, Adhikesavan, Solomon-Sathish, Emmanuel, Venkatalakshmi-Aparna, Potluri   +3 more
core   +2 more sources

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

, 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, De Clerck, Karen, Meireman, Timo, Rahier, Hubert, Rijckaert, Sander, Van Paepegem, Wim   +5 more
core   +2 more sources

Anisotropic fracture resistance of avian eggshell

Journal 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, Zhou, Y, Gludovatz, B, Kruzic, JJ, Baptiston Tanaka, Carina   +4 more
openaire   +3 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

Clinical, 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, Amawi R, Seweryniak P, Bakitian F, Vult von Steyern P   +4 more
doaj  

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

Endodontology, 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, Rajni Nagpal, Udai Pratap Singh, Nida Mehmood, Meenal Agarwal, Zaid Nabi Khan   +5 more
doaj   +1 more source