Abstract
For lingual orthodontics treatment, it is considered difficult to control torque in the upper anterior for extraction cases. Various methods have been suggested in order to ensure torque control of the upper anterior region. The purpose of this paper is to report a desired treatment result: .018”×.025” slot brackets and .022”×.028” slot brackets were placed on the anterior teeth and canine, and the posterior teeth respectively, and the upper anterior teeth were retracted by sliding mechanics with .018×.025 stainless steel wire.