Introduction: One of the clinical problems in orthodontics is the bonding of brackets tocomposite restorations. The aim of this study was to evaluate the shear bondstrength of brackets bonded to composite restorations using Excite. Methods:Forty brackets were bonded to composite surfaces, which were embedded inacrylic resin. One of the following four protocols was employed for surfacepreparatio...

  Introduction: This in-vitro study investigated the initial 24h bond strength between different composites and zirconia after application of four different adhesive systems. Methods: A total of 120 specimens of zirconia (InCoris, Sirona, Germany, Bernsheim) were ground with a 165 µm grit rotating diamond disc. Thirty specimens were each additionally treated with Cimara Zircon “CZ” (VOCO GmbH, ...

t Thee aim of this study is to investigate three mechanical models to describe thee viscoelastic behavior of a commercially available light-activated restorative compositee during setting. Stress-strain data on Z100 were recorded by a dynamicc test method performed on a universal testing machine. The models weree tested by matching the model response to experimental data and the materiall param...

<em>Universal Testing Machine or UTM (Universal Machine) is a material testing machine that has more than one type of testing. The purpose this research to design and analyze the strength construction for tensile bending tests. This uses hydraulic jack as power source provide required load. limited load 1.4 tons while maximum 5 according capacity. method used in study begins with using CA...

In this work, the laboratory-made handsheets having different grammages were obtained at certain production conditions. The tensile characteristics of analysed by using two measuring techniques. main method for determining behaviour was performed on universal testing machine, which is a generally accepted conventional machine. A rheometer device used as second and alternative properties handshe...