The extremely soft rectangular wire can also be sued as initial wire. There are nearly no elasticity when used at low temparature. With this properties, it allows to be applied to cases of severe crowding.
Neo-Sentalloy archwires are thermodynamic and becomes active at 34 degree celcius. Although Neo-Sentalloy wires may appear to take a permanent bend at room temparature, they will resume the correct arch shape when placed in the mouth.