Four maxillary premolar SLBs (Damon 3MX, SmartClip, Carriere, and In-Ovation R) and one conventional twin bracket (Victory) were paired with seven archwires [0.014, 0.016, 0.018, 0.016 × 0.022 Ultra Therm (thermal A f 80-90°F), 0.016, 0.018 SPEED Supercable, and 0.017 × 0.025 Turbo].  Among thermal archwires, for a given deflection, forces increased with increasing archwire size.  Supercable archwires displayed less force than their same size thermal counterparts.  The Turbo archwire generated force values in between those of 0.016 and 0.018 thermal archwires. 
THERM