| 摘要 |
<p>Orthodontic bracket comprising a body (1) having a mesiodistal slot (10), a base (11), and a plurality of tie wings (12, 120) mainly developed along an occlusal-gingival direction, said tie wings being two- by-two on opposite sides in relation to said slot (10) and partially emerging over a labial side (L) of said body (1), wherein said slot (10) is apt to receive an archwire (2), wherein said tie wings (12, 120) protrude externally from the body (1) and towards the base (11), feature a curved surface (121) whose concavity is turned towards the same base (1) and constitute a support means for an element (3) apt to prevent the archwire (2) from coming out of the slot (10). That said element (3) features a planar portion intended to slide above, and parallel to, the labial side (L) of the body (1) and a flexible and elastic arm (33) having a portion (34) which is securable to the said surface (121) of two tie wings (12) resulting on the same side in relation to the slot (10). The said portion (34) of the flexible arm (33) moves along a curved path corresponding to the profile of the lower side (LT) of the said tie wings (12) while the planar portion of the said element (3) slides above the labial side (L) of the bracket body (1).</p> |
