نتایج جستجو برای: flexural capacity

تعداد نتایج: 286179  

Journal: :journal of dentistry, tehran university of medical sciences 0
mohammad ali hemmati fariborz vafaee hanif allahbakhshi

objectives: the aim of this study was to assess and compare the water sorption and flexural strength of thermoplastic and conventional acrylic resins. materials and methods: water sorption and flexural strength were compared between a thermoplastic modified polymethyl methacrylate (pmma) denture base resin (group a) and a heat-polymerized pmma acrylic resin (group b) as the control group (n=10)...

2016
Christine Schatz Monika Strickstrock Malgorzata Roos Daniel Edelhoff Marlis Eichberger Isabella-Maria Zylla Bogna Stawarczyk

The aim of this work was to evaluate the influence of specimen preparation and test method on the flexural strength results of monolithic zirconia. Different monolithic zirconia materials (Ceramill Zolid (Amann Girrbach, Koblach, Austria), Zenostar ZrTranslucent (Wieland Dental, Pforzheim, Germany), and DD Bio zx² (Dental Direkt, Spenge, Germany)) were tested with three different methods: 3-poi...

2002
George C. Engelmayr Elena Rabkin Frederick J. Schoen John E. Mayer Michael S. Sacks

The independent effect of dynamic flexure on the development of tissue engineered heart valves (TEHV) was investigated. Engineered heart valve tissues were constructed by seeding ovine smooth muscle cells onto rectangular scaffold strips and incubating the resultant constructs in a dynamic flexure bioreactor or under static conditions for three weeks. Tests indicated a trend of higher effective...

Journal: :Dental materials journal 2014
Takashi Nakamura Tsuyoshi Sugano Hirofumi Usami Kazumichi Wakabayashi Hiroshi Ohnishi Tohru Sekino Hirofumi Yatani

In this study, two types of porous zirconia and dense zirconia were used. The flexural strength of non-layered zirconia specimens and those of the layered zirconia specimens with veneering porcelain were examined. Furthermore, the shear bond strength of veneering porcelain to zirconia was examined. The flexural strength of the non-layered specimens was 1,220 MPa for dense zirconia and 220 to 30...

2011
Ibrahimm M. Hammouda Essam E. Al-Wakeel

We evaluated the effect of water storage on fluoride release and mechanical properties of compomer restorative material. Fluoride release was recorded using a specific fluoride electrode. Flexural properties and fracture toughness were measured using a universal testing machine. Vickers hardness was measured using a micro-hardness tester. There was initial burst of fluoride release up to 1 w, w...

2014
Bekir Cihad Bal İbrahim Bektaş

In this study, we determined the flexural properties and tensile shear strength of five-ply plywood panels produced with eucalyptus (Eucalyptus grandis), beech (Fagus orientalis), and hybrid poplar (Populus x euramericana) using urea-formaldehyde (UF), melamine-urea-formaldehyde (MUF) and phenol-formaldehyde (PF) adhesives. Flexural properties were tested on both parallel and perpendicular to g...

2009
Hyung-Tae Kim Jung-Suk Han Jae-Ho Yang Jai-Bong Lee Sung-Hun Kim

STATEMENT OF PROBLEM Recently Yttrium-stabilized tetragonal zirconia polycrystal (Y-TZP) has been introduced due to superior flexural strength and fracture toughness compared to other dental ceramic systems. Although zirconia has outstanding mechanical properties, the phenomenon of decrease in the life-time of zirconia resulted from degradation in flexural strength after low temperature aging h...

2014
K. Pazhanivel G. B. Bhaskar

Investigations on flexural and tensile properties of GFRP laminates influenced by stainless steel wire reinforcement were carried out as a novel approach. Plain GFRP laminates and GFRP laminates reinforced with stainless steel wires at different depth with various pitch distances were fabricated by hand layup method. The composite specimens reinforced with steel wires were exposed to low freque...

2016
Shruti Digholkar V. N. V. Madhav Jayant Palaskar

PURPOSE The purpose of this study was to evaluate and compare the flexural strength and microhardness of provisional restorative materials fabricated utilizing rapid prototyping (RP), Computer Assisted Designing and Computer Assisted Milling (CAD-CAM) and conventional method. MATERIALS AND METHODS Twenty specimens of dimensions 25 mm × 2 mm × 2 mm (ADA-ANSI specification #27) were fabricated ...

2012
P. E. Mergos K. Beyer

Experimental results for quasi-static cyclic tests on reinforced concrete (RC) walls have shown that shear deformations can constitute a significant ratio of the total deformations when the wall is loaded beyond the elastic regime. For walls, which form a stable flexural hinge at their base, the ratio of shear to flexural deformations remains approximately constant over the entire range of impo...

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