- Bracket slot: It is opened horizontally from the lips and cheeks, so that the arch wire can be smoothly put into the force from the lips and cheeks;
- Bracket wing (bracket wing): It is convenient to ligate and fix the arch wire, and the wing can be attached with a hook for traction. According to the shape of the bracket wing, it can be divided into single wing, double wing and three wing;
- Bracket base: Its shape design is mainly to strengthen the adhesion with the tooth surface. The shape of the bracket base surface is compatible with the shape of the lips and cheek surfaces of each tooth. It has a metal grid or an etched bottom plate. Adhesive, so that the bracket is firmly bonded to the tooth surface.
