نتایج جستجو برای: flexural strength

تعداد نتایج: 211560  

Journal: :Bio-medical materials and engineering 2015
Yuan Li Hong Lin Gang Zheng Xuehui Zhang Yongxiang Xu

The purpose of this study is to compare the differences in flexural strength and compressive strength between four resin-modified luting glass ionomer cements that are commonly used in clinics. Furthermore, this study investigates the influence of curing mode on the flexural strength and compressive strength of dual-cured resin-modified glass ionomer cements. Initially, flexural strength and co...

Journal: :Journal of clinical and diagnostic research : JCDR 2015
Tony C Thomas Aswini Kumar K Shamaz Mohamed Vinod Krishnan Anil Mathew Manju V

AIM The aim of this in vitro study was to compare the flexural strength, the flexural modulus and compressive strength of the acrylic polymer reinforced with glass, carbon, polyethylene and Kevlar fibres with that of plain unfilled resin. MATERIALS AND METHODS A total of 50 specimens were prepared and divided into 10 specimens each under 5 groups namely group 1- control group without any fibr...

ژورنال: مجله دندانپزشکی 2005
زندی نژاد, امیرعلی, عطائی, محمد , پهلوان, ایوب ,

Statement of Problem: Despite the improvements achieved in the field of dental composites, their strength, longevity, and service life specially in high stress areas is not confirmed. Finding better fillers can be a promising step in this task. Purpose: The purpose of this study was to investigate the effect of the filler type on the mechanical properties of a new experimental dental composite ...

Journal: :international journal of nano dimension 0
j. esmaeili assistant professor, department of structural engineering, school of civil engineering, university of tabriz, tabriz, iran. a. r. mohammadjafari ph.d. student, department of structural engineering, school of civil engineering, university of tabriz, tabriz, iran.

in this study the effect of using multi-walled carbon nanotube (mwcnt) on flexural and compressive strengths, ultimate displacement and energy absorption capability of standard cement mortar considering different weight percentages of nanotubes as well as different dispersion methods has been investigated. influential point in adding nanotubes to the composites is their proper dispersion, which...

Alaa M. Attaallah Amal Ezz-Eldin fahmy Eman M Zayed Salma M Dabees Youssef Y Ashour

Introduction: There has been a growing interest in glass ceramic systems with good esthetics, high fracture resistance, bonding durability, and simplified fabrication techniques using CAD/CAM. The aim of this study was to compare flexural strength in "polished" and "glazed and fired" specimens of zirconium lithium silicate (ZLS) CAD/CAM blocks Celtra Duo. Methods</stron...

Journal: :The journal of contemporary dental practice 2013
Teerthesh Jain Naveen S Yadav Amrita Pandita S M A Feroz U K Kartika Praval Pratap Singh

AIM The purpose of this study was to evaluate and compare the flexural strength of commercially available acrylic (trevalone) and modified polymethylmethacrylate (PMMA). MATERIALS AND METHODS Four groups were tested; Group 1- control group regular MMA, group 2-2% methacrylic acid, 88% MMA, group 3-16% methacrylic acid, 84% MMA group 4- 20% methacrylic acid, 80% MMA 15 resin specimens of each ...

2014
K. Kishor Kumar P. Ramesh Babu Raja Narender Reddy

The present work study flexural and tensile behavior of short Kenaf fiber reinforced composites. The fibers are chemically treated in 2% NaOH solution at room temperature. Short fibers of 4mm and 8 mm are used in the present work. The composite lamina is prepared by hand molding using isopthalic polyester resin. Flexural test and tension tests are carried out as per ASTM standards. The flexural...

2016
Kristina Gorseta Domagoj Glavina Tomislav Skrinjaric Beata Czarnecka John W. Nicholson

This study determined the influence of coating with either petroleum jelly or light-cured varnish and storage medium on the flexural strength of glass-ionomer cements (GIC). The flexural strength of two glass-ionomer cements (Fuji Equia Fil and Ketac Molar Aplicap) was measured. Specimens (2 × 2 × 25 mm) were prepared in three groups: uncoated, coated with petroleum jelly, or coated with light-...

Journal: :SADJ : journal of the South African Dental Association = tydskrif van die Suid-Afrikaanse Tandheelkundige Vereniging 2008
A R Le Roux N Lachman M Walker T Botha

INTRODUCTION Incorporating a feldspar chemical bond between alumina filler particles is expected to increase the wear-resistant and flexural strength properties. AIMS AND OBJECTIVES An investigation was carried out to evaluate the influence of the feldspar chemical bonding between alumina filler particles on wear and flexural strength of experimental alumina/feldspar dental composites. It was...

Journal: :Brazilian dental journal 2013
Juliana Abdallah Atoui Daniela Nair Borges Felipucci Valéria Oliveira Pagnano Iara Augusta Orsi Mauro Antônio de Arruda Nóbilo Osvaldo Luiz Bezzon

This study evaluated the tensile and flexural strength of tungsten inert gas (TIG) welds in specimens made of commercially pure titanium (CP Ti) compared with laser welds. Sixty cylindrical specimens (2 mm diameter x 55 mm thick) were randomly assigned to 3 groups for each test (n=10): no welding (control), TIG welding (10 V, 36 A, 8 s) and Nd:YAG laser welding (380 V, 8 ms). The specimens were...

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