Abstract

Currently, there are two main types of self-ligating Bracket systems: active and passive. Active is when the wire is pressed into the slot of the bracket, passive-is when the wire is more free into the slot. In Damon’s passive self-ligating system super elasticity of the wire can be more obvious because of the low friction between the wire and the slot of the braces, so the wire develops very weak forces in the process of treatment. In passive self-ligating systems we do not require such additional devices, such as headgear, rapid palatal expansion, etc. This is significantly saves the doctor’s work time as well the patient time. Individual torque values of the braces reduce the extraction option in the crowding cases, which improves of face aesthetics: we can avoid flattening of the face appearance and buccal black corridors, etc.