| 摘要 |
<p>A pistol grip (1) has twin abutments (19) projecting in parallel relationship spaced apart to straddle an orthodontic bracket (21) bonded to a tooth (T) and engage the tooth at opposite sides of the bracket. A swing handle (3) pivoted to the pistol grip (1) carries a pull wire extending between the abutments. Such pull wire has a loop (12) for hooking a wing (23) of the orthodontic bracket. The handle (3) can be pulled toward the pistol grip (1) to draw the pull wire toward the pistol grip for pressing the abutments (19) against the tooth and simultaneously pulling the bracket (21) off the tooth. During such pulling, constriction of the arch wire slot (24) in the bracket (21) is prevented by fitting in such slot a spacer hook (25) of a tenaculum (26). </p> |
