AIM Dental tissues such as enamel, dentinoenamel junction (DEJ), dentin, and root dentin can react differently to demineralization and remineralization. The aim of this study was to evaluate the remineralization ability of sodium fluoride on the microhardness of enamel, dentin, and dentinoenamel junction. MATERIALS AND METHODS Ten extracted third molar teeth were sectioned mesiodistally to fo...

INTRODUCTION Trace elements are known to influence bone metabolism; however, their effects may be exacerbated in renal failure because dialysis patients are unable to excrete excess elements properly. Our study correlated bone quality in dialysis patients with levels of bone fluoride, magnesium, and aluminum. A number of studies have linked trace elements, including fluoride, magnesium, and alu...

Objectives: The aim of this study was to compare polymerization depth of two bulk-fill and one conventional composite cured for different times. Methods: This in vitro experimental study was conducted on 54 composite samples (2×4×10mm) fabricated of Tetric N-Ceram bulk-fill, x-tra fil bulk-fill, and Grandio conventional composite cured for 20, 30, and 40 seconds. The microhardnes...

Acid erosion is a superficial loss of enamel caused by chemical processes that do not involve bacteria. Intrinsic and extrinsic factors, such as the presence of acid substances in the oral cavity, may cause a pH reduction, thus potentially increasing acid erosion. The aim of this study was to evaluate the microhardness of bleached and unbleached bovine enamel after immersion in a soda beverage,...

Semi-IPNs with varying contents of poly(vinyl alcohol) (PVA), poly acrylamide (PAM) and crosslinker N,N’methylene bis acrylamide (MBA) were prepared by redox polymerization method. The structural and morphological properties were studied by Fourier transform infrared (FTIR) spectroscopy, environmental scanning electron microscopy (ESEM) and X-ray diffraction (XRD) methods, respectively. It was ...

The microhardness study reveals the mechanical strength of the grown crystal. The Vicker’s and Knoop hardness studies were performed to understand the mechanical behavior of the glycine lithium chloride crystals. The Vicker’s and Knoop microhardness numbers (HV and HK) for the crystal were found for different loads. It is found that these numbers increase with an increase in the load. The Mayer...

The article deals with mechanical properties of layers which were created by plasma nitriding technology. Nitrided layers apply to steel AISI 4140 were evaluated by metallographic method, GDOES method, microanalysis method and microhardness method. The trend of mechanical properties was experimentally obtained in dependence on length of cavity during plasma nitriding process. Moreover, the infl...

Original scientific paper In this work, TiC cladded layer has been produced by laser scanning over the preplaced TiC powder on aluminium substrate, using a pulse Nd:YAG laser. Depending on the effective energy density at the specimen surface, TiC was deposited or partially dispersed into the melted aluminium at the specimen surface. Microstructure was evaluated using optical microscopy and SEM/...

Ultrafine grained sheets were prepared from a twin-roll cast AA8006 aluminium alloy using accumulative roll-bonding process at room temperature. The evolution of microstructure of sheets after three accumulative roll-bonding passes during isochronal annealing with a constant step of 20 °C/20 min was studied by light and electron microscopy. The influence of the resulting microstructure on mecha...