Orthodontic wires, orthodontic wire packs

Abstract

This invention provides an orthodontic wire in which a simple form of stop is placed on multiple orthodontic wires. [Solution] An orthodontic wire having wires and stops, wherein the wires consist of two or more wires, the stops are tubular members through which all of the two or more wires pass, the wires are always in contact with the inner surface of the stop inside the stop, and adjacent wires are also in contact with each other.

Description

[Technical Field]

[0001] This disclosure relates to orthodontic wires (archwires) used in dental orthodontics. [Background technology]

[0002] For example, Patent Document 1 discloses a device in which a stop (sometimes called a "crimpable stop") is attached to a single orthodontic wire. The stop restricts the mesiodistal movement of the orthodontic wire. By providing a device in which the stop is positioned on the orthodontic wire, the inconvenience of the practitioner having to thread the orthodontic wire through the stop on-site can be avoided. Patent Document 1 further describes making the shape of the inside and outside of the stop more likely to catch on the orthodontic wire in order to prevent the stop from falling off. Other means include applying wax or light-curing resin. [Prior art documents] [Patent Documents]

[0003] [Patent Document 1] WO2014 / 158871 [Overview of the project] [Problems that the invention aims to solve]

[0004] Shaping the stop, as with conventional methods, or using other conventional techniques was cumbersome. Furthermore, when performing procedures using two or more orthodontic wires (tandem wires), using conventional stop methods became even more complicated.

[0005] Therefore, the object of this disclosure is to provide an orthodontic wire in which a simple form of stop is arranged on multiple orthodontic wires. [Means for solving the problem]

[0006] This application discloses an orthodontic wire having a wire and a stop, wherein the wire is provided with two or more wires, the stop is a tubular member through which all of the two or more wires pass, the wires are always in contact with the inner surface of the stop inside the stop, and adjacent wires are also in contact with each other.

[0007] In a cross-section perpendicular to the pipe axis of the stop, the area of ​​the cavity in the pipe is A. S The total cross-sectional area of ​​the wires present here is A W In that case, A W / A S The ratio represented by may be between 0.3 and 0.9.

[0008] The wire and stop may be configured to satisfy the above relationship in more than 50% of the axial direction of the stop.

[0009] This application discloses an orthodontic wire pack comprising a container and the above-mentioned orthodontic wire stored in the container. [Effects of the Invention]

[0010] According to this disclosure, even in a simple stop configuration, it is possible to hold multiple wires and appropriately suppress the movement of the wires in the mesiocentral direction. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is an external view of the orthodontic wire 10. [Figure 2] Figure 2(a) is the AA section, and Figure 2(b) is the BB section. [Figure 3] Figure 3 shows cross-sections of other configurations with different wire cross-sectional shapes. [Figure 4] Figure 4 shows cross-sections of other configurations with different wire cross-sectional shapes. [Figure 5] Figure 5 shows cross-sections of other configurations with different wire cross-sectional shapes. [Figure 6] Figure 6 shows an example where two stops are placed. [Figure 7] FIG. 7 is a diagram for explaining the dental correction wire pack 20. [Figure 8] FIG. 8 is a diagram showing another example of the dental correction wire pack 20.

Mode for Carrying Out the Invention

[0012] The above-described actions and advantages of the present disclosure will become apparent from the following embodiments. However, the present disclosure is not limited to these embodiments.

[0013] 1. Configuration of Dental Correction Wire FIG. 1 shows the appearance of a dental correction wire 10 according to one embodiment. As can be seen from FIG. 1, the dental correction wire 10 includes a plurality (two in this embodiment) of wires 11 and a stop 12. FIG. 2(a) shows the A-A cross section of FIG. 1. Also, FIG. 2(b) shows the B-B cross section of FIG. 2(a). FIGS. 3 to 5 show cross sections from the same perspective as FIG. 2(a) for other examples.

[0014] [Wire] Known wires can be used for the wire 11. The wire 11 is a linear member, and its cross section may be circular as in this embodiment, square (with R formed at the corners) as shown in FIG. 3, or elliptical. As shown in FIG. 4, a combination of circular and square cross sections may also be used. The wire 11 may be a single wire or a stranded wire formed by twisting a plurality of thin wires together.

[0015] Known materials can be used for the material of the wire 11, and there is no particular limitation. For example, nickel-titanium alloys (e.g., copper, cobalt, niobium, platinum, etc. as other components), stainless steel, titanium-based nickel-free alloys (e.g., molybdenum, zinc, tin, aluminum, chromium, vanadium, niobium, etc. as other components), copper-zinc-aluminum alloys, cobalt-chromium-nickel-molybdenum alloys, etc. can be mentioned. Furthermore, materials other than metals may be used. Examples of materials other than metals include polymers, plastics, and ceramics. These materials may be used individually, or in combination with the aforementioned metals.

[0016] In this disclosure, two or more wires 11 are bundled together by a stop 12. Each of the bundled wires 11 may have the same shape (cross-sectional shape, cross-sectional area, length) and material, but at least one of the shape and material may be different from each other. Among these, possible combinations of diameters (inches) of the two wires 11 include 0.012 / 0.012, 0.016 / 0.010, 0.016 / 0.012, 0.016 / 0.013, 0.016 / 0.014, 0.016 / 0.016, 0.014 / 0.010, 0.014 / 0.013, 0.018 / 0.012, 0.018 / 0.013, 0.018 / 0.014, 0.018 / 0.016, and 0.018 / 0.018. The three wires have diameters (in inches) of 0.014 / 0.018 / 0.010.

[0017] [stop] Stop 12 bundles multiple wires 11 together and also functions as a crimpable stop. The stop 12 in this embodiment is tubular, and may be a circular tube as shown in Figure 2, a square tube as shown in Figure 5, or a tubular shape of any other kind. In the tubular shape of the stop 12 in this embodiment, as shown in Figure 2(b), it is preferable that its inner surface is flat in the direction of the tubular axis, and is in a so-called straight tubular shape. As will be described later, even a stop with a simple shape such as a straight tubular shape will function as a stop because the multiple wires 11 and the stop 12 have a predetermined morphological relationship. The size of the stop 12 in the direction of the tubular axis can be approximately 0.5 mm to 3 mm. As is well known, the "direction of the tubular axis" is the direction in which the cavity of the tube extends. However, the inner surface of the stop 12 may be made rough in order to increase friction with the wire 11.

[0018] Known materials can be used for the material of Stop 12.

[0019] One Stop 12 may be arranged as in the example of FIG. 1, or two or more may be arranged at different positions as in FIG. 6. However, at least one is preferably arranged at the center of the wire 11 (the most protruding part of the curved wire) as in FIG. 1.

[0020] [Relationship between wire and stop] The wire 11 and the stop 12 preferably satisfy the following <1> or <2>, and more preferably satisfy both <1> and <2>. Note that the wire 11 and the stop 12 are configured so that they are difficult to move relative to each other but can move relatively. That is, the wire 11 and the stop 12 are not joined. <1> In this embodiment, in the cross-sections of FIGS. 2(a), 3, 4, and 5, a part of the wire 11 is always in contact with the stop 12. In addition, adjacent wires 11 among the plurality of wires 11 are in contact with each other. Thereby, the movement of the plurality of wires 11 is restricted, and the movement of the plurality of wires in the radial direction is restricted.

[0021] <2> Let the inner area of the cavity in the cross-section (FIGS. 2(a), 3, 4, 5) perpendicular to the axial direction of the stop 12 be A S (mm 2 ), and the total cross-sectional area of the wire 11 in the cross-section be A W (mm 2 ). When A W / A S The ratio represented by is preferably 0.3 or more and 0.9 or less, and more preferably 0.4 or more and 0.6 or less. Thereby, the above effects can be achieved more reliably.

[0022] <3> the above <1> , <2> Regarding this, if stop 12 is a straight pipe, the relationship between wire 11 and stop 12 <1> , <2> It is preferable that the relationship is satisfied along the entire axial length of stop 12, but it is sufficient if it is satisfied in a range of at least 80%. On the other hand, even if the stop is not a straight pipe, the above relationship is satisfied in a range of 50% or more in the axial direction of the stop. <1> , <2> It is preferable that at least one of the following conditions is met. More preferably, the above conditions are met in a range of 70% or more. <1> , <2> It satisfies at least one of the following conditions.

[0023] 2. Other aspects As shown in Figures 7 and 8, the orthodontic wire 10 may be in the form of an orthodontic wire pack 20, which is housed in a transparent bag 21 (container). In the orthodontic wire pack 20, the bag 21 is joined at a joint 22, which is hatched in Figure 7, so that two sheets, one on the front and one on the back, are joined around the bag, and the orthodontic wire 10 is housed in the space inside the joint 22. Figures 7 and 8 show that the orientation of the orthodontic wire 10 (the orientation in which the stop 12 is positioned) is different from the orientation of the bag 21. Either orientation is acceptable. [Explanation of symbols]

[0024] 10... Orthodontic wire, 11... Wire, 12... Stop, 20... Orthodontic wire pack, 21... Bag

Claims

1. An orthodontic wire having a wire and a stop, The aforementioned wire is provided in two or more parts. The stop is a tubular member through which all two or more of the aforementioned wires pass. The wires are always in contact with the inner surface of the stop inside the stop, and adjacent wires are also in contact with each other. Orthodontic wire.

2. In a cross-section perpendicular to the pipe axis of the stop, the area of ​​the cavity in the pipe is A. Ｓ The total cross-sectional area of ​​the wires present here is A Ｗ In that case, A Ｗ / A Ｓ The orthodontic wire according to claim 1, wherein the ratio represented by is 0.3 or more and 0.9 or less.

3. An orthodontic wire wherein, in the axial direction of the stop, the wire and the stop satisfy claim 1 or 2 for 50% or more of the length of the stop.

4. An orthodontic wire pack comprising a container and an orthodontic wire according to claim 1 or 2, stored in the container.

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