Liftable straight wire appliance

The utility model relates to a tooth corrector for correcting odonto-maxillary or dislocation-maxillary, in particular to a lifting straight arc corrector, comprising a support slot and a metal base, wherein the support slot is provided with two couples of bonding wings, and crossed a crossbow thread groove and an upright-bow thread groove. The utility model is characterized in that the crossbow thread groove is provided with a cover which one end is protruded outside the end of the thread groove, and the cover and the thread groove form a square tube. The utility model has simple structure and easy operation, which needs low force to treat tooth, with high move speed, accurate control, saved treatment time and wide application.