Azdent Super Elastic Copper Ni-Ti cross-sections come with archwire stops, pre-loaded, for your convenience. 35˚C THERMO-ACTIVE COPPER Ni-Ti Generates mid-range, constant force levels until the wire has fully recovered to its original shape. Ligation is easier with full-size archwires due to lower loading forces. When earlier engagement of full-size wires and sustained unloading forces at body temperature is desired, this is the ideal wire.