“…These wires do not undergo as much deflection as lighter wires, however, they show a lower friction coefficient when compared with the thicker ones, 1,17,20,21 since the larger the wire size, the higher the friction coefficient. 1,6,20,22 The method of wire ligation to the bracket also influences frictional resistance 23 and it is proportional to the ligation force and friction coefficient of the surfaces that are in contact. 24 Therefore, this study was developed with the purpose of comparing the frictional resistance produced by different elastomeric ligatures, one low-friction ligature and two conventional ligatures, since they are the first choice of several orthodontists.…”