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EP-4275649-B1 - SELF-LIGATING ORTHODONTIC BRACKET

EP4275649B1EP 4275649 B1EP4275649 B1EP 4275649B1EP-4275649-B1

Inventors

  • YOON, SUNG HEE

Dates

Publication Date
20260506
Application Date
20210719

Claims (8)

  1. A bracket for self-ligating correction (100) comprising: a bracket body (110) having a slot (113) into which a wire is insertable and formed in a first direction, and a guide part (114) formed in a second direction crossing the first direction; a door (130) reciprocally installed on the guide part (114) of the bracket body (110) to open and close the slot (113) ; and a clamper (150) prevents the door (130) from being dislodged from the open position or the closed position and while a predetermined force is applied to the door (130) in the second direction, the clamper (150) is elastically deformed when the position of the door (130) is changed between the open position and the closed position, , the clamper (150) comprising: a coupling pin (151) installed on the bracket body (110) so as to allow one end to protrude onto the guide part (114); and an elastic loop (155) installed on one side of the door (130) facing the guide part (114) and formed in a hollow single closed curve, characterized in that the clamper (150) further comprises a cap member (2 57) provided between the lower surface of the door (130) and the elastic loop (155), the cap member (2 57) covering the elastic loop (155), and in that the cap member (2 57) is formed in the same or a similar color to the color of the door.
  2. The bracket for self-ligating correction (100) of claim 1, wherein the elastic loop (155) comprises: a parking part (155a) separated into at least two spaces; and a neck part (155b) that is located between the spaces of the parking part (155a) and is elastically deformed during relative motion between the coupling pin (151) and the elastic loop (155) .
  3. The bracket for self-ligating correction (100) of claim 2, wherein the elastic loop (155) is formed to a height of 3 mm or less.
  4. The bracket for self-ligating correction (100) of claim 2, wherein the elastic loop (155) is formed to a thickness in the range of 50 µm to 1 mm.
  5. The bracket for self-ligating correction (100) of claim 2, wherein the elastic loop (155) comprises: a base material made of a plastic material; and a coating material made of a metal material coated on the base material to a predetermined thickness.
  6. The bracket for self-ligating correction (100) of claim 5, wherein the coating material is formed to a thickness ranging from 10 nm to 2 µm.
  7. The bracket for self-ligating correction (100) of any one of claims 1 to 6, wherein the elastic loop (155) is constructed such that one side thereof facing the coupling pin (151) is open and the other side thereof is closed.
  8. The bracket for self-ligating correction (100) of claim 7, wherein a slit cut by a predetermined length along the side of the elastic loop is formed in at least one side of the elastic loop (155) .

Description

BACKGROUND 1. Field The present disclosure relates to a bracket for self-ligating correction, and more particularly, to a bracket for self-ligating correction used for orthodontic treatment, and more particularly, to a bracket for self-ligating correction having a door structure. 2. Description of the Related Art Orthodontic treatment refers to a procedure in which a ligation bracket having a slot is attached to the surface of a tooth, and an orthodontic wire is ligated in the slot to correct malalignment. Among ligation brackets, a bracket for self-ligating correction may include a door that is installed to be opened and closed with respect to a bracket body so as to ligate orthodontic wires without an additional device. CN 210 931 956 U discloses a bracket for self-ligating correction comprising: a bracket body having a slot into which a wire is inserted and formed in a first direction, and a guide part formed in a second direction crossing the first direction; a door reciprocally installed on the guide part of the bracket body to open and close the slot ; and a clamper that moves the door while elastically deforming when a predetermined force is applied to the door in the second direction, the clamper comprising: a coupling pin installed on the bracket body so as to allow one end to protrude onto the guide part. CN 109 381 269 A discloses a bracket for self-ligating correction according to the preamble of claim 1. FIG. 1 is a photo showing a tooth model treated with a conventional self-ligating bracket having a door structure, and FIG. 2 is a view showing a clamper applied to the self-ligating bracket of FIG. 1. Referring to FIGS. 1 and 2, the conventional self-ligating bracket 10 is attached to the surface of a tooth D, and includes a bracket body 11, a door 15 and a clamper 17. The bracket body 11 has a slot into which an orthodontic wire (W) is ligated. The door 15 is installed at the bracket body 11 so as to be opened and closed and is fixed in the open or closed position by the clamper 17. The clamper 17 is installed between the door 15 and the bracket body 11, and may be composed of a leaf spring having a horseshoe structure as shown in FIG. 2. Therefore, when a predetermined force is applied in the direction in which the door 15 is opened or closed, the leaf spring 17 is elastically deformed to open and close the door 15. The clamper 17 is installed between the door 15 and the bracket body 11. The clamper 17 formed of the leaf spring structure as shown in FIG. 2 may be easily elastically deformed in the process of opening and closing the door 15. That is, while the direction in which the deformation load applied to the material, such as tension/compression, is received is concentrated on the closed ring side of the leaf spring 17, the deformation direction of the leaf spring 17 is concentrated on the open position. Accordingly, during the deformation process for opening and closing the leaf spring 17, the elastic restoration performance of the leaf spring may be lost. Therefore, if the door opening/closing function is lost, it may be necessary to replace the door with a new product. In this case, the treatment time may be extended, and the cost may be increased. In addition, bracket body removal and re-treatment processes may be added, which may cause tooth damage. In addition, whereas the bracket body 11 is generally made of a translucent ceramic material, the leaf spring 17 is made of a metallic material having a black color, and thus, as shown in the enlarged view of FIG. 1, the leaf spring 17 may be exposed to the outside of the bracket body 11 in the form of black spots. This may offset the advantages of a ceramic bracket body used for aesthetic purposes. Accordingly, there is a problem in that the satisfaction of the patient is lowered. SUMMARY The present invention has been devised in view of the above problems, and an object of the present invention is to provide a bracket for self-ligating correction constructed such that the amount of elastic deformation of a clamper can be minimized in the process of opening and closing a door with respect to a bracket body. In addition, another object of the present invention is to provide a bracket for self-ligating correction constructed such that a clamper is not visible from the outside of the self-ligating bracket. clamper is not visible from the outside of the self-ligating bracket. In order to achieve the above objects, a bracket for self-ligating correction according to the present invention comprises: a bracket body having a slot into which a wire is inserted and formed in a first direction, and a guide part formed in a second direction crossing the first direction; a door reciprocally installed on the guide part of the bracket body to open and close the slot; and a clamper that moves the door while elastically deforming when a predetermined force is applied to the door in the second direction. Here, the clamper includes: a coupling pin instal