ABSTRACT
Self-ligating brackets encompass fast popularity over the past several decades and had various advantages with regard to the efficiency, effectiveness, and stability of treatment when compare with conventional brackets. Self ligating brackets are basically two main types, according to the design of the locking mechanism, the dimensions of the slot, and the dimensions of the arch wires; they are passive and active. Active self-ligating brackets have a spring clip that stores energy to press against the archwire for rotation and torque control. Self-ligating brackets appear to be the beneficiary of the most recent studies as their design and engineering can offer the clinician the ability to take advantage of our better understanding of arch wire/bracket interactions. Since we know the impact of different bracket –arch wire combinations on the resistance to sliding, it is now possible for us to select the best combination depending upon the case.