- Used apply torque to any tooth from centrals to 2nd premolars upper or lower. Can be used on any rectangular wire from .016x.022 to .019x.025. You can deliver 125 to 150 grams of labial or lingual root torque to align roots and finish cases faster. Use medium spring for upper laterals, small lower interiors, and large spring for other teeth.
Goodman Torquing Spring