Mechanical properties were tested, encompassing static and kinetic frictional resistance (FR) and fracture strength. Manufacturing accuracy was assessed with root mean square calculations of trueness and precision. Morphological properties, including slot surface structure and dimensions, were examined using scanning electron microscopy and surface profiler analysis. A polycrystalline alumina ceramic bracket (3M™ Clarity™ Advanced, MBT 0.022-in. ![]() Three experimental groups of zirconia brackets were fabricated using yttria-stabilized zirconia (YSZ) materials with different yttria proportions-3 mol% yttria (3Y-YSZ), 4 mol% yttria (4Y-YSZ), and 5 mol% yttria (5Y-YSZ) (Tosoh Ceramic, Japan). ![]() This in vitro study evaluated comprehensively the performances of zirconia brackets with varying yttria proportions in manufacturing advanced orthodontic brackets.
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