OBJECTIVE To investigate the surface morphology, structure, elemental composition, and key mechanical properties of various sizes and tempers of Australian wires. MATERIALS AND METHODS Three types of Australian wire were used: 0.016'' regular, 0.018'' regular+, and 0.018'' special+ (A.J. Wilcock, Whittlesea, Victoria, Australia). Each type of wire was subjected to scanning electron microscopy...

PURPOSE The aim of this study was to evaluate the surface hardness of six composite resins: Revolution, Natural Flow, Fill Magic Flow, Flow-it! (flowables), Silux Plus (microfilled) and Z100 (minifilled) before and after polishing at different times. MATERIALS AND METHODS For this purpose, 240 specimens (5mm diameter, 1.4mm high) were prepared. Vickers hardness was determined before and after...

The mechanical properties of a Zr55Cu30Al10Ni5 metallic glass rod are investigated by Vickers microhardness and depth-sensing nanoindentation. The alloy exhibits a relatively large hardness which decreases when increasing the maximum applied load. Serrated flow is also observed during nanoindentation. Both effects are related to deformationinduced mechanical softening.

BACKGROUND The aim of this study was the characterization of mechanical properties of representative types of orthodontic wires employing instrumented indentation testing (IIT) according to ISO 14577. METHODS Segments were cut from ten wires. The first six are made of stainless steel (SS), two are made of Ni-Ti, and the last two are made of titanium molybdenum alloys (TMA). Then, the Martens ...