| 摘要 |
<p>Orthodontic anchoring screw, which comprises a threaded shank (2), having prevalent extension along a longitudinal axis (Z) and intended to be screwed into a bone tissue. The anchoring screw (1) also comprises a head (3), in a single body with the threaded shank (2) and provided with at least one seat (5), which extends substantially along a housing direction (X) perpendicular to the longitudinal axis (Z) of extension of the threaded shank (2), and it is intended to house a metallic wire (7) capable of imposing a correction action on at least one incorrectly positioned tooth (4). The head (3) is provided with engagement means (8), suitable for holding the metallic wire (7) in the seat (5), which comprise at least two shaped appendages (9) extending from a common base (18), each with a shaped shank (13) having a widened head (14) fixed on top. The widened heads (14) of the shaped appendages (9) define a slit (6) at the top between them for the insertion of the metallic wire (7), said slit (6) having prevalent extension along a transversal direction (Y), perpendicular to the longitudinal axis (Z) of extension of the threaded shank (2) and inclined with respect to the housing direction (X) of the seat (5). The shaped shanks (13) of the appendages (9), together with the widened heads (14), define the seat (5), which is in communication with the slit (6) to receive the metallic wire (7).</p> |
