Improved Nance arch for traction of canine teeth

The invention discloses an improved Nance arch for traction of canine teeth. One end of the Nance arch is connected with first permanent molar bands, the other end of the Nance arch is connected with a plastic base, a transpalatal arch is arranged between first permanent molars, two ends of the transpalatal arch are connected with the first permanent molar bands on two sides, the plastic base, the Nance arch and the transpalatal arch form a triangular structure, a U-shaped curve bent in the direction away from the lip direction is arranged in the middle of the transpalatal arch, two traction hooks are symmetrically arranged on the left side and the right side of the U-shaped curve respectively, the tongue side buckles are symmetrically arranged on the upper jaw canine tongue side needing palatal movement, fixing hooks are arranged on the tongue side buckles, a traction wire is arranged between the fixing hook on the left side and the traction hook on the right side, and a traction wire is arranged between the