Improved Nance bow for traction of canine teeth

The utility model discloses an improved Nance arch for traction of canine teeth, one end of the Nance arch is connected with a first permanent molar band, the other end of the Nance arch is connected with a plastic base plate, a transverse palatal bar is arranged in the middle of the first permanent molar, two ends of the transverse palatal bar are connected with the first permanent molar band on two sides, the plastic base plate, the Nance arch and the transverse palatal bar form a triangular structure, and the first permanent molar band is connected with the plastic base plate. A U-shaped curve bent in the direction away from the lip direction is arranged in the middle of the transverse palatal bar, the left side and the right side of the U-shaped curve are symmetrically provided with two traction hooks 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, and a traction wire is arr