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Investigations in the correlation between Martens hardness and flexural strength of composite resin restorative materials
Resin based composites Flexural strength Martens hardness
2010/11/26
The purpose of this study is to verify the hypothesis that the hardness and flexural strength of composite resin restorative materials are correlated and similarly affected by accelerated aging. With ...
In vitro evaluation of shear bond strength of veneering ceramics to zirconia
Delamination Veneer Zirconia
2010/11/26
The bond strength between veneering ceramic and zirconia framework is the weakest link in the layered structure. To investigate the shear bond strength (SBS) of veneering ceramics to zirconia, four ty...
Effect of preliminary irradiation on the bond strength between a veneering composite and alloy
Bond strength Curing unit Veneering composite
2010/11/26
The shear bond strength of a veneering composite (Solidex) and silver-palladium-copper-gold alloy (Castwell M.C.12) was evaluated for different duration times and irradiance for preliminary photo-poly...
The effect of surface roughness on the Weibull distribution of porcelain strength
Weibull modulus Surface roughness Flexural strength
2010/11/26
The purpose of the present study was to test the hypothesis that glazing will affect the Weibull modulus or the mean flexural strength of dental porcelain. Four groups (n = 30) of specimens were prepa...
The comparison of quadriceps muscle strength between sprint runner and normal un-trained individuals (Determined by Kin-Com)
Isokinetic dynamometer Sprint runners Normal un-trained individuals Maximum torque quadriceps concentric Maximum torque quadriceps eccentric
2010/1/5
Introduction: It is suggested that quadriceps muscle has an important role in stability & mobility of Knee joint in athletics and normal individuals; therefore, the purpose of this study was evaluatio...
Determination of mechanical strength of different material double-layer rectangular tablets
Flexure test (Three-point bending test) Double-layer rectangular tablets (Composite beams) Starch 1500/Avicel PH102 Emcompress/Avicel PH102 Emcompress/Starch 1500
2010/1/5
The mechanical strength of different material composite beams were assessed. All tablets were subjected to three-point bending test. For the preparation of tablets, the material of the lower layer was...
Comparison of Shear Bond Strength between Composite Resin and Porcelain Using Different Bonding Systems
Ceramic Dentin bonding Silane Porcelain
2009/12/31
Statement of Problem: Ceramics as in ceramo-metallic and all ceramic tooth restorations have grown popular owing to their high tissue compatibility and esthetic advantages. Such restorations have the ...
Problems in Standardization of Orthodontic Shear Bond Strength Tests;A Brief Review
Orthodontic bond strength Standardization
2009/12/29
Bonding brackets to the enamel surface has gained much popularity today. New adhesive systems have been introduced and marketed and a considerable increase in research regarding bond strength has been...
OBSERVATION ON THE INCIDENCE OF NON TYPHOID SALMONELLA (SEEOTYPEHAVANA), DRUG RESISTANCE AND PATHOGENIC STRENGTH TO THE CHILDREN OF less than ONE EYAR OLD AGE IRAN (1976-1986)
Salmonella Havana Serotype drug resistance Sulfamide multiple drug resistance Nontyphoid Solmonella
2009/12/28
A hundred and five strains of Salmonella havana were studied from the patients of pediatric hospital of Tehran and Tabriz during 1976-86. The sources of the strains in order to their frequency were fr...
A COMPARISON OF PULLOUT STRENGTH OF PEDICULAR SCREWS BETWEEN DIFFERENT METHODS OF SCREW INSERTION IN POSTERIOR FIXATION OF THORACIC SPINE
Pedicle screw spine thoracic intratransverse process pullout strength
2009/12/18
Pedicle screws provide rigid fixation for instabilities in the lumbar and lumbosacral spine. Anatomical consideration and potential risk of neurologic complications are the reasons to hesitate using p...
Effect of Silane Solvent on Microtensile Bond Strength of Hy-drogen Peroxide-Treated Fiber Post and Composite Core
Silane Solvent Fiber Post Composite Core Hydrogen Peroxide Endodon-tics Treated Teeth
2009/12/17
Objective: The aim of this in vitrostudy was to evaluate the effect of the type of solvent in silane solution on microtensile bond strength of fiber posts to composite resin cores af-ter application o...
Evaluation of bond strength of D.T.Light-post to root canal using dual-cure and self-cure resin cements after irrigation with various solutions
Bond strength Self-cure resin cement Dual-cure resin cement D.T.Light-post Degree of conversion
2009/12/17
Background and Aim: Nonmetallic tooth- colored posts adhere to canal walls by dentin bonding agents and resin cements. Better retention and proper distribution of stress result from enough and proper ...
Children Mental Health Problems:Parent Report Form of Strength and Difficulties Questionnaire
The Strength and Difficulties Questionnaire (SDQ) Children psychopathology screening behavioral problem
2009/12/17
Objective:
This study was performed to evaluate the mental health status of 6 - 11 year-old children of Tehran in a community-based sample using the Persian version of the Strength and Difficulties Q...
Fracture Strength and Bending of Fiber-Reinforced Composites and Metal Frameworks in Fixed Partial Dentures
Denture Partial Fixed Resin-Bonded Inlays fiberglass reinforced poly-mers
2009/12/16
Objective: This in vitro study evaluated the fracture strength and bending amount of twotypes of fiber reinforced composite (FRC) and cast metal frameworks used for fabrication of inlay fixed partial ...
The influence of X-rays on strength properties of polyester vascular system prosthesis
Mechanical properties Polyester biomaterials X-ray irradiation
2009/12/14
Purpose: of this paper was to evaluate the influence of X-ray irradiation on mechanical properties of polyester yarn used in production of vascular system prosthesis. Patients with such prosthesis are...