| 摘要 |
<p>An orthodontic bracket comprises:- a bracket body (20) with an open sided slot running along the labial side of the bracket from the mesial end to the distal end, the slot being for the reception of an arch wire (46 or 80); and a resilient retainer member (45) for retaining an arch wire in the slot, the retainer member being movable on the bracket body in the occlusal-gingival direction between a slot-closed position and a slot-open position; wherein the part (50) of the retainer member which closes the slot extends into the slot when it is in the 'slot closed' position, so that movement of the retainer member out of the slot-closed position takes place against its resilience as the opposed embracing retainer parts are moved apart. The arrangement is such that any force urging the arch wire out of the slot and contacting it with the retainer, thereby urges the retainer to the slot-closed position. <IMAGE></p> |
