Results 21 to 30 of about 2,714,278 (296)

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

Materials 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, Heitor Panzeri, Marcelo Aparecido Vieira, Lucas da Fonseca Roberti Garcia, Simonides Consani   +4 more
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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

Toughening materials: enhancing resistance to fracture [PDF]

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

Journal 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, J H, Kinney, A P, Tomsia, R O, Ritchie   +3 more
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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  

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

Journal 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, Fatemeh Raoufinejad, Hedayat Gorjestani, Marzie Kamali, Ali Eslambol Nassaj, Arash Shahravan   +5 more
doaj   +1 more source

Fracture-resistant monolithic dental crowns [PDF]

Dental 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, Zhisong, Mai, Amir, Barani, Mark, Bush, Brian, Lawn   +4 more
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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
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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

Journal 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, Thota Murali Mohan, Bhupathi Sravanthi Yadav, Ediga Sandhya Rani, Kalagotla Aparna, Kasireddy Jyothsna   +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

Journal 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, Célio Jesus do PRADO, Aline Aredes BICALHO, Renata Afonso da Silva PEREIRA, Flávio Domingues das NEVES, Carlos José SOARES   +5 more
doaj   +1 more source