SELF LIGATION www.speedsystem.com How is torque control achieved with the SPEED Appliance?* SPEED's edgewise slot will accommodate square, rectangular, or SPEED shaped archwires for full torque control. SPEED shaped nickel titanium and stainless steel archwires feature a round-rectangular profile. The unique shape of this archwire enhances cooperation between SPEED brackets and archwire ensuring full expression of built-in torque. Additionally, the recently added “Torquing Rails” on the Upper Anterior attachments help ensure full expression of built-in torque in this area of the arch where torquing is most difficult and most critical. Later the Spring Clip and bracket combination has re-oriented the tooth so that the archwire slot is parallel with the occlusal edge of the archwire slot. The illustration above shows the Spring Clip deflected labially indicating that there is a torque discrepancy between the wire and the bracket. 11 Torquing rails further enhance torque control on upper anteriors. *Torque expression of self-ligating brackets Badawi H.M., et al. - Am. J. Orthod. Dentofacial Orthop 2008; 133:(5):721-728 *A recent study, published in the AJODO, has illustrated that Active Self-Ligating Appliances provide superior torque control to Passive Self-Ligating appliances, “as a direct result of their active clip”. Torquing Action with Rectangular Wire Torquing Action with SPEED Wire™
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