This invention relates to an orthodontic bracket.
Dental brackets are described in Japanese Patent Publication No. 2010-274110.
Orthodontic methods using elasticity, such as wires, to fix orthodontic brackets or tubes to the teeth are known. Orthodontic brackets are used by being fastened to the patient's teeth in order to apply the load occurred by the bending or tension of the wire to the teeth to be corrected.
However, conventional dental brackets have adjustable hooks to which auxiliary tools are attached. In this case, there is a problem that the auxiliary tools were easily detached from the hook, and it is difficult to reattach them.
An object of a certain invention described in this specification is to provide an orthodontic bracket comprising an auxiliary tool attachment portion to firmly secure an auxiliary tool and to facilitate its attachment and removal by a ring-shaped body portion and an opening and closing portion, and a slot portion for passing a wire.
A certain invention described in this specification is based on the finding that an orthodontic bracket comprises a slot for a wire to pass through, and an auxiliary tool attachment portion for attaching an auxiliary tool, thereby the auxiliary tool can be secured firmly and the attachment of the auxiliary tool can be facilitated.
A certain invention described in this specification relates to an orthodontic bracket 1. This orthodontic bracket 1 comprises a bracket body 3, one or a plurality of slot portions 7 and 9 fixed to the bracket body 3 for passing a wire 5, and an auxiliary tool attachment portion 13 fixed to the bracket body 3 for attaching an auxiliary tool, wherein the auxiliary tool attachment portion 13 comprises a ring-shaped body portion 15 and an opening and closing portion 7 for opening and closing the body portion 15.
A preferred example of the above invention is the orthodontic bracket 1, wherein the auxiliary tool is a coil spring, an elastic or a power chain.
A preferred example of the above invention is the orthodontic bracket 1, wherein the auxiliary tool attachment portion 13 has a carabiner structure.
A certain invention described in this specification is the orthodontic bracket with a ring-shaped body portion and an auxiliary tool attachment portion that makes the fixation of the auxiliary tool stronger and its attachment and removal easier by means of the opening and closing portion.
The following is a description of the embodiment in which the present invention is to be implemented using the drawings. The present invention is not limited to the forms described below, but includes those that have been modified from the following forms as appropriate within the scope obvious to those skilled in the art.
The size of the bracket body 3 may, for example, be between 1 mm and 15 mm, or between 2 mm and 12 mm, in both vertical and horizontal in
The bracket body 3 can be said to be the part that constitutes the base of the bracket 1. In the example shown in
As the material of the bracket body 3, for example, ceramic (preferably containing zirconia particles), plastic resin (e.g., polycarbonate), stainless steel (e.g., SUS304L), sapphire, pure titanium (TP340), titanium alloy (6A1-4V) etc. are used. The orthodontic bracket 1 is attached to the tooth surfaces with an adhesive.
The wire 5 is an element that connects adjacent brackets 1 to each other and attaches the brackets 1 to the teeth with which they are in contact. The wire 5 connects the adjacent brackets 1 to each other by being passed through the holes in the slot 7 and the slot 9. The total length of the wire 5 may be between 20 mm and 250 mm, between 30 mm and 150 mm, or between 40 mm and 120 mm. The ends of the wire 5 may be curved so that the wire 5 is not displaced from the slot 7 and the slot 9. This may prevent the wire 5 from coming off from the slots 7 and 9 by the curved portion of the wire 5 being caught in the slot openings or the like, even if a shock is applied to the wire 5.
The material of the wire 5 is preferably ceramic (preferably containing zirconia particles), plastic resin (e.g., polycarbonate), stainless steel (e.g., SUS304L), sapphire, pure titanium (TP340), or titanium alloy (6A1-4V) etc., for example.
The slot 7 and the slot 9 are the sites for fixing the wire 5. As shown in
The above square pole-shaped cylinder may have a hole in two opposing faces (top and bottom) that are smaller than the other two opposing faces, and the two faces may be connected through the hole. The height of the slot 7 and the slot 9 may be between 0.4 mm to 1.5 mm, between 0.5 mm to 1.3 mm, or between 0.6 mm to mm 1.2 mm, with the above two faces as the top and bottom surfaces. The vertical length of the above square pole may be, with the above two faces of the slot 7 and the slot 9 as the top and bottom surfaces, between 0.4 mm and 1.0 mm, between 0.5 mm and 0.9 mm, or between 0.6 mm and 0.8 mm.
Similarly, the horizontal length of the above square pole may be between 0.4 mm and 1.0 mm, between 0.5 mm and 0.9 mm, or between 0.6 mm and 0.8 mm. The slot 7 and the slot 9 may be separated from each other, or they may be bonded or connected to each other via certain faces of the above square pole. The wire 5 may be passed through the holes in the slot 7 and the slot 9. This allows the adjacent brackets 1 to be connected to each other and the brackets 1 to be attached to the teeth.
As materials for the slots 7 and 9, for example, ceramic (preferably containing zirconia particles), plastic resin (e.g., polycarbonate), stainless steel (e.g., SUS304L), sapphire, pure titanium (TP340), titanium alloy (6A1-4V), etc. are used.
The auxiliary tool attachment portion 13 is a portion for attaching an auxiliary tool. The auxiliary tool attachment portion 13 may comprise a ring-shaped body portion 15 and an opening and closing portion 17.
The auxiliary tool attachment portion 13 is fixed to the upper portion of the bracket body 3 in
The material of the auxiliary tool attachment portion 13 is preferably ceramic (preferably containing zirconia particles), plastic resin (e.g., polycarbonate), stainless steel (e.g., SUS304L), sapphire, pure titanium (TP340), or titanium alloy (6A1-4V) etc., for example. In order to eliminate discomfort when the orthodontic bracket is attached, the auxiliary tool attachment portion 13 may be coated with trehalose to have a trehalose layer. In this way, a natural sweet taste can be perceived when the orthodontic bracket is attached in the oral cavity, and the metallic taste can be suppressed.
The ring-shaped body portion is one of the elements that make up the auxiliary tool attachment portion 13. The ring-shaped body portion 15 is a ring-shaped portion fixed to the upper portion of the bracket body 3, for example, in
For example, the auxiliary tool attachment portion 13 with a ring-shaped body portion 15 may have a carabiner structure. As shown in
The carabiner structure may have a hole in its ring symmetrical in shape, either vertically or horizontally, or one area of its ring may be more bulging than the other said area. It may also be in the shape of the D of the alphabet, with a portion of the ring forming a straight line. The total length of the ring of the ring-shaped body portion 15 may be between 1 mm and 15 mm, between 2 mm and 13 mm, or between 3 mm and 12 mm.
As materials for the ring-shaped body portion 15, for example, ceramic (preferably containing zirconia particles), plastic resin (e.g., polycarbonate), stainless steel (e.g., SUS304L), sapphire, pure titanium (TP340), titanium alloy (6A1-4V), etc. are used.
The opening and closing portion 17 is one of the elements that make up the auxiliary tool attachment portion 13. The opening and closing portion 17 is a portion for opening and closing the ring-shaped body portion 15. The opening and closing portion 17 is a part of the ring of the ring-shaped body portion 15. It is preferred that the opening and closing portion 17 is a portion of the ring of the ring-shaped body portion 15 that is not in contact with the surface of the bracket body 3. This allows the auxiliary tool described below can be attached to the auxiliary tool attachment portion 13 by opening the opening and closing portion 17, without being obstructed by the surface of the bracket body 3. This shape makes it possible to easily reattach the auxiliary tool to the auxiliary tool attachment portion 13, even if the auxiliary tool comes off from the auxiliary tool attachment portion 13 for some reason, for example.
One end of the opening and closing portion 17 may be secured to the ring-shaped body portion 15 via a fastening metal or the like. For example, the fastening metal or the like may connect and secure the end portion of the ring of the ring-shaped body portion 15 and the end portion of the opening and closing portion 17. On the other hand, it is preferable that the other end of the opening and closing portion 17 is not completely fixed to the auxiliary tool attachment portion 13 by the fastening metal or the like, and is able to open and close freely. The other end of the opening and closing portion 17 and the auxiliary tool attachment portion 13 may be connected by a screw type (screw lock type) or the like. The part also may be of the triactlock type, in which the other end of the opening and closing portion 17 can be shifted to the direction perpendicular to the orientation of the hole of the ring and can be rotated halfway around an axis with the end of the opening and closing portion 15 secured by the fastening metal or the like.
For the opening and closing portion 17, for example, ceramic (preferably containing zirconia particles), plastic resin (e.g., polycarbonate), stainless steel (e.g., SUS304L), sapphire, pure titanium (TP340), titanium alloy (6A1-4V), etc. are used.
An auxiliary tool is a tool that is attached to said auxiliary tool attachment portion 13. The auxiliary tool may be, for example, a coil spring, an elastic or a power chain.
An auxiliary tool is an element that assists in the connection of adjacent brackets 1 to each other.
For the auxiliary tool, for example, ceramic (preferably containing zirconia particles), plastic resin (e.g., polycarbonate), stainless steel (e.g., SUS304L), sapphire, pure titanium (TP340), titanium alloy (6A1-4V), etc. are used.
This invention relates to an orthodontic bracket. Methods of manufacturing and using orthodontic brackets are well known. Therefore, the orthodontic bracket regarding this invention can be manufactured based on the known methods and used in the same way as ordinary orthodontic brackets.
This invention may be used in the technical field related to orthodontic brackets that hold wires.
Number | Date | Country | Kind |
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2021-085946 | May 2021 | JP | national |
Filing Document | Filing Date | Country | Kind |
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PCT/JP2022/020524 | 5/17/2022 | WO |