Orthodontic bracket with rotary ligating cover

A - Human Necessities – 61 – C

Patent

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Details

A61C 7/12 (2006.01)

Patent

CA 2651425

The present invention provides designs for a self-ligating orthodontic bracket. According to one embodiment, the self-ligating orthodontic bracket includes a mounting base for attachment to a tooth surface, an archwire slot formed upon the base and sized for receiving an orthodontic archwire, a rotary ligating cover selectively rotatable between an open position permitting access to the archwire slot and a closed position covering the archwire slot, and one or more locking features for holding the rotary ligating cover in a closed position. In one embodiment, the bracket includes one or more locking tabs on the rotary ligating cover aligned in coplanar relation to the rotary ligating cover and cooperatively mating with cutout portions in the base. In one embodiment, the bracket includes at least one resilient retention mechanism adjacent to the one or more locking tabs and aligned in coplanar relation to the rotary ligating cover. The resilient retention mechanism may include one or more relief channels permitting flexing of at least portions of the rotary ligating cover adjacent to the one or more locking tabs.

L'invention concerne des conceptions de bracket orthodontique à ligature automatique. Dans un mode de réalisation, ce bracket orthodontique à ligature automatique comprend une base de montage pour la fixation à une surface de dent, une rainure pour arc façonnée au-dessus de la base et dimensionnée pour recevoir un fil d'arc orthodontique, un couvercle de ligature rotatif pouvant pivoter sélectivement entre une position ouverte donnant accès à la rainure pour arc et une position fermée recouvrant la rainure pour arc, ainsi qu'un ou plusieurs éléments de verrouillage qui maintiennent le couvercle de ligature rotatif en position fermée. Dans un mode de réalisation, le couvercle de ligature rotatif du bracket comporte une ou plusieurs saillies de verrouillage alignées de manière coplanaire relativement au couvercle de ligature rotatif et coopérant par accouplement avec des parties creuses de la base. Dans un autre mode de réalisation, le bracket comprend au moins un mécanisme de rétention résilient, adjacent à la ou aux saillies de verrouillage et aligné de manière coplanaire relativement au couvercle de ligature rotatif. Ce mécanisme de rétention résilient peut comprendre un ou plusieurs canaux en évidements permettant la flexion de parties au moins du couvercle de ligature rotatif adjacentes à une ou plusieurs saillies de verrouillage.

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