Self -ligating brackets have developed rapidly and represent the development orientation of straight wire appliance. These bracket systems have a built-in mechanism to close off the edgewise slot, which avoid the need for elastomerics or steel ties. There are two types of self-ligating brackets. One is labeled as active that presses against the archwire, the other is labeled as passive that does not actively press against the archwire. Self-ligating systems were widely used in orthodontic treatment. Because self-ligating brackets make the operate easier, reduce the chair-side time and produce lower friction by obviating ligation. This paper summarized the current studies about the choice of orthodontic force, the treatment time, the treatment efficiency, the control of teeth position, the perception of comfort and the oral hygiene of self-ligating brackets orthodontic treatment. We hope to provide theoretical basis for orthodontic clinical treatment.
