Anchor screw for orthodontic treatments
AssigneeNicos Sas di de Toni Nicoletta & C.
InventorBortolo Giuliano Maino
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Abstract
The invention discloses an anchor screw (10) to the palatal vault for orthodontic correction treatments comprising: a lower threaded portion (1) adapted to be screwed to the bone; a substantially cylindrical central portion (2) protruding from the bone and the gum adapted to allow anchorage of traction and/or thrust orthodontic devices; an upper portion (3) provided with movement means (4) to screw and unscrew the screw. The central portion (2) has a reduced diameter zone (6) in comparison with the diameter of the cylindrical portion and at least a hole (5) for the passage of orthodontic devices such as round and/or rectangular/square wires.
Claims8
An anchor screw having a central axis, said screw for securing orthodontic correction treatments comprising:
- a lower threaded portion adapted to be screwed into a bone;
- a substantially cylindrical central portion having an outer diameter, said central portion protruding from said bone and gum when the lower threaded portion is screwed into the bone, and being adapted to allow anchorage of orthodontic devices thereto;
- an upper portion provided with movement means to screw and unscrew said screw;
- wherein said central portion has a reduced diameter zone in comparison with the outer diameter of said central portion, said reduced diameter zone having flat and parallel surfaces so as to prevent rotation of orthodontic devices, and having at least one opening transverse to the axis of the screw suitable for passage of wires or orthodontic devices.
Dependencies are inferred from the claim text.