The purpose of this study was to compare the amount and rate of retraction and anchor loss, brought about by Monocrystalline saffire (Radiance) and Polycrystalline alumina (Clarity Advanced) brackets in an in-vivo randomized split mouth design, during individual maxillary canine retraction by sliding mechanics. Study sample comprised of thirteen patients who fulfilled the selection criterion. Individual canine retraction was carried out using superelastic nickel-titanium closed coil springs (150g force) for 4 months on a 0.018-inch SS archwire. Photocopies of casts obtained at start of retraction (T1) and after 4 months (T2), were traced and superimposed to measure the amount of retraction of the canine and anchor loss of the first molar for each side (serial model analysis).It was found that Polycrystalline brackets exhibited increased distal movement of the maxillary canines and lesser amounts of anchor loss when compared to monocrystalline brackets. These differences were found to be statistically significant (P<0.05).
