JP3143053U - Orthodontic apparatus and tow rope stopper and retractor used therefor - Google Patents

Abstract

The object of the present invention is to provide an orthodontic treatment system for an orthodontic treatment system that can easily close a gap after extraction of a premolar in a short period of time and can maintain the correct occlusion after movement. And provide a tractor.
The central portion is fixed to the front tooth portion, and a bending wire is disposed along the side tooth portion. The first pulling biasing means pulls and biases both ends of the bending wire toward the respective molar teeth. The canines engage freely with the bending wire. The canine teeth are traction-biased separately and simultaneously from the front teeth by the second traction urging means. The bending wire is a composite wire body having a rectangular wire portion having a polygonal cross section and a circular wire portion having a circular cross section arranged at a portion along the four front teeth. By pulling from the different heights of the pulling cord stoppers that are stretched and held in a substantially vertical direction from the curved wire part, the angle of the front tooth part is controlled in a manner that applies different rotational force to the square wire part, while the canine teeth are moved backward simultaneously. Tow.
[Selection] Figure 2

Description

  The present invention relates to an orthodontic apparatus that corrects dental dentition, and in particular, an orthodontic apparatus that can perform appropriate orthodontic correction in a relatively short period of time regardless of the degree of cooperation with respect to patient use. The present invention relates to a tow rope stopper and a retractor used.

  Conventionally, the method of moving the six front teeth including the canine to the rear (back or side of the molars) first involves centrifugally moving only two canines, and then moving the four front teeth to the lingual side. A method of centrifugally moving the front teeth together is known.

In the method in which only the former two canines are centrifugated alone and then the four anterior teeth are moved to the lingual side, it takes about one year to complete the movement. There was a drawback that forced a large burden on the company. Further, the latter method of centrifugally moving the six front teeth together requires a certain amount of traction force, so that the burden on the fixed source becomes too great, and the canine is linearly pulled backward, so the direction of movement is appropriate. In addition, there is a drawback that the possibility of contact with cortical bone is increased.

The present invention has been made in view of the above-described conventional problems, and one object of the present invention is to allow the forward movement of the anterior dentition to be performed without difficulty in a short period of time while controlling the inclination of the front tooth portion. An orthodontic apparatus capable of maintaining the correct state of occlusion, and a tow rope stopper and a retractor used therefor are provided.

  In order to achieve the above object, the present invention fixes the central portion of the front tooth portion 200 to be bent along the side tooth portion 300, and both ends of the bending wire 12 are rearward ( (P1, p2), (q1, q2), first pulling biasing means (14) for pulling and biasing toward (r1, r2)), and hook 16 fixed to the canine teeth toward the rear The bending wire 12 includes a rectangular wire portion 121 having a polygonal cross section disposed at a portion along the four front teeth (k1, k2, m1, m2) side, and a square wire. Each of which is composed of a composite wire body having a circular wire portion 122 having a circular cross section, which is arranged along the canine and molar teeth continuously from both ends of the portion. Elongates and holds vertically from the part A dentition provided with a tow rope stopper 24 provided in such a manner that a rotational load is applied to the rectangular wire portion 121 while the first traction urging means 14 urges the elongated portion in a direction parallel to the bending wire. It is comprised from the correction apparatus 1.

  In addition, the present invention is the tow rope stopper 24 described above, and a plurality of the tow rope stoppers 24 are installed in a multistage manner with intervals in the extending direction of the shaft rod 26 extending from the square wire portion 121 side. A plurality of cantilever spool bodies in which a narrow portion 38 that allows the retractor 50 of the first pulling urging means (14) to be hooked and detachable is integrated with an enlarged portion 40 continuous with the narrow portion. It is comprised from the tow rope stop 24 of the orthodontic apparatus provided with the hanging part 32 which consists of 34.

In that case, the expansion part 40 is comprised by the gum 45 or the flat shape flat along the tooth | gear surface side.

In addition, a plurality of stages of the hook portions 32 of the tow rope stopper 24 of the bending wire 12 are installed.

  The traction device of the present invention is a coil spring that locks one end 52a to a fixed source, extends the other end 52b side, and engages an extension portion of a traction rope stopper, and the coil spring is stretched to a certain length. 100g weight (0.98N) or 150g weight (1.47N), which is suitable for tooth movement, is designed to exert a traction force that is always suitable for tooth movement.

  According to the orthodontic apparatus of the present invention, the central portion of the orthodontic portion is fixed to the front tooth portion, the bending wire is curvedly disposed along the side tooth portion, and both end sides of the bending wire are traction biased toward the rear. Including a first traction urging means and a second traction urging means for urging and urging a hook added to the canine backward, wherein the bending wire is disposed at a portion along the four front teeth. A composite wire body having a polygonal square wire portion and a circular wire portion having a circular cross section arranged continuously along the canine and molar teeth from the end of the square wire portion, and one end side is fixed to the square wire portion In addition, the other end side is extended and held in a substantially vertical direction from the bending wire portion, and a rotational load is applied to the square wire portion while the extending portion is pulled and biased in a direction parallel to the bending wire by the first pulling biasing means. Equipped with a tow rope stopper provided in Because I is a configuration, performed without forcibly moving in the lingual direction of the front teeth, occlusion after movement may also retain the correct state. In particular, since it is connected to the extension part side of the tow rope stopper firmly fixed to the square wire part of the bending wire and pulled backward, while controlling the inclination of the front tooth part according to the height of the cantilever spool body Can be pulled to the lingual side, and as a result, inappropriate inclination of the front teeth at the end of rearward traction can be prevented.

  Further, according to the tow rope stopper of the orthodontic apparatus of the present invention, the tow rope stopper is installed in a plurality of stages in a multi-stage manner with an interval in the extension direction of the shaft rod extending from the square wire portion side. 1. A structure provided with a hanging part made up of a plurality of cantilever spool bodies, in which a narrow diameter part to be hung on the pulling means of one pulling urging means and to be freely hung and an enlarged part continuous with the narrow diameter part are integrated. Thus, the rotational torque can be adjusted by the square wire portion of the first traction biasing device.

In addition, since the enlarged portion is formed in a flat shape along the gum or tooth surface, the other end side of the traction device of the first traction biasing device can be easily locked to the small diameter portion. The locked state can be reliably held by the enlarged portion and the separation thereof can be prevented.

  In addition, since the hook portion of the wire traction line stopper is installed in multiple stages, the engagement height position of the hook part of the traction line stopper of the first traction urging device can be adjusted in multiple stages, The rotational torque can be finely adjusted by the square wire portion.

  Also, it is a coil spring that locks one end to the fixed source, extends the other end, and engages the extension part of the tow rope stopper, and the other end can freely adjust the locking length with the tow rope stopper Since it is a traction device consisting of a coil spring with a locking length adjustment mechanism for locking, for example, if a constant traction force is applied to the front tooth portion corresponding to the length of a predetermined coil spring portion, the locking length can be adjusted. By adjusting so that the length of the coil spring is always obtained at this time, a constant rearward traction force can be continuously applied, and the rearward traction can be effectively performed.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. FIG. 1 thru | or FIG. 9 has shown one Embodiment of the orthodontic apparatus 1 of this invention, FIG. 1 is the looking-up top view of the orthodontic apparatus of the state with which it mounted | wore to the maxillary dentition, for example, FIG. It is a partial enlarged view of the principal part of an orthodontic apparatus.

  The orthodontic appliance 1 can be applied not only to the upper jaw but also to the lower jaw side. The orthodontic apparatus 1 according to the present embodiment is an apparatus that pulls the front teeth backward, and includes a bending wire 12 that is bent from the front tooth portion to the side tooth portion and curved along these tooth groups. A first traction urging device 14 and a second traction urging device 18 are included. The first and second traction biasing devices 14 and 18 pull and bias the six front teeth including canine teeth toward the molar side, that is, rearward.

  In FIG. 1, in this embodiment, six front teeth including canine teeth are front teeth 200, and four pairs of all side teeth including first extracted premolars are side teeth 300. The bending wires 12 are provided on the lip side surfaces of the central two adjacent central incisors k1, k2 and the front lips of the four front teeth of the side incisors m1, m2 disposed adjacent to both sides thereof via first brackets 20a shown in FIG. Are ligated to each of the four teeth in a curved state along the front tooth portion. Further, the second left piece bracket 22a and the second right piece on the buccal side of the canines n1 and n2 and the second premolars p1 and p2 and the first and second molars q1, q2, r1 and r2 behind the side incisors. The bending wire 12 is provided so as to be movable in the direction along the dentition while being guided by each bracket in a curved state along each side tooth portion via the bracket 22b. In the present embodiment, the first premolars, which are adjacent teeth behind the canine, are extracted.

  The bending wire 12 is composed of a composite wire body in which square wires are cut to form a square wire portion 121 and a circular wire portion 122. The square wire portion 121 is a square-shaped wire portion (see FIG. 4) made of a metal that does not harm the human body in a dental compatible mouth, and the square wire portion 121 includes two central central incisors k1, K2 and the side incisors m1 and m2 arranged adjacent to both outer sides thereof are ligated and fixed to a total of four locations on each of the four teeth via the first bracket 20a on the lip side of the four front teeth. The first bracket 20a is made of, for example, a synthetic resin-made small size base of about 4 mm square, and is fixedly bonded to the outer surface of each of the four front teeth. The rectangular wire portion 121 is fitted in a slot (not shown) of the bracket 20a, and in this state, the rectangular wire portion 121 is ligated into the slot (groove) of the bracket of the four front teeth by ligating and fixing with an appropriate metal wire. It is fixed.

The circular wire portion 122 is a wire portion (see FIG. 6) made of dental-compatible metal and has a circular cross section (see FIG. 6). It can be done.

In this embodiment, a circular left wire portion 122a and a circular right wire portion 122b are continuously cut and bonded to both ends of the square wire portion 121, respectively, and the square wire portion and the circular wire portions 121 and 122 are integrated together. The arch-shaped bending wire 12 is comprised. The bending wire 12 is a linkage moving means that simultaneously fixes or engages with a plurality of tooth rows to cause linkage movement when the front teeth are pulled backward. As described above, the rectangular wire portion 121 is ligated and fixed in the slots of the four front teeth brackets, but the other circular wire portions 122 are engaged with and formed on the brackets 22a and 22b, respectively. It can be freely moved along the extending direction of the wire, that is, along the arcuate track, by being engaged with the slot formed. At the same time, the brackets 22ag and 22bg attached to the canine are urged to urge the canine toward the centrifugal force by the second traction urging means 18.

  Further, in the present embodiment, a tow rope stopper 24 is provided which has one end fixedly supported on the bending wire 12 and the other end extended and held in a direction perpendicular to the wire. The tow rope stopper 24 is a means for receiving a traction force for towing backward while applying a rotational load to the four front teeth. Specifically, the shaft rod 26 is fixedly connected to the bending wire 12 in a vertical direction, and the shaft By pulling the vertical extension side of the heel in parallel with the bending wire 12, a state in which a rotational torque is generated in the fixing portion 28 of the bending wire 12 and the shaft ridge 26 is created and held.

  Specifically, in FIG. 1, one end of the tow rope stopper 24 is fixed at the end of the square wire portion where the square wire portion 121 transitions to the circular wire portion 122. One end of the tow rope stopper 24 is fixed to the rectangular wire portion 121 of the bending wire 12 to form a fixed portion 28, and the tow rope stopper 24 and the square wire portion 121 are integrated. The tow rope stopper 24 is clamped at the joint J and has a U-shaped groove fixed to the bending wire 12, and one end fixed to the clamping table 30 and the other end is perpendicular to the bending wire. And a hook portion 32 attached to the shaft 26 and connected to the first traction urging device 14 to receive the traction urging force of the first traction urging device 14. The U-shaped groove of the clamp base 30 is caulked and fixed so as not to be rattled by being externally fitted to the square wire portion 121, whereby the shaft rod 26 and the bending wire 12 are integrated at the fixing portion 28. The hanging portion 32 is a connection / disengagement portion with the first traction urging device that detachably engages the traction device 50 of the first traction urging device. In the embodiment, the hanging portion 32 is a cantilever spool. It is composed of a body 34. A plurality of cantilever spool bodies 34 as the hook portions 32 are arranged in a multi-stage manner with a linear interval in the direction of extension of the shaft rod 26, and the tractor 50 of the first traction urging device 14 is externally hooked and hooked. Let it hang freely. More specifically, the cantilever spool body 34 is provided with three bases 36 that are spaced apart from each other in the extending direction of the shaft 26 and are projected from the main body of the shaft at three positions. Short short diameter portions 38 project from the base 36 in the lateral direction, and an enlarged portion 40 is provided integrally with the thin diameter portion 38 so as to be integrated therewith. Accordingly, the enlarged portion 40 can be externally hooked, for example, a looped rope can be hooked freely, for example, the cantilever spool body 34 having three different height positions. Any one of the spool bodies can be freely replaced. Further, as shown in FIGS. 6 to 8, the enlarged portion 40 has a flat shape that is flat along the gum 45 or the tooth surface side. Therefore, the other end side of the traction device of the first traction urging device can be easily locked to the small-diameter portion, and the locked state can be reliably held by the enlarged portion, and the separation can be prevented. Further, for example, when a flat ring portion integrally connected in a rosary shape as shown in FIG. 10 is used as a traction urging device, as shown in FIG. 12, the locking tool is twisted in the longitudinal direction and pulled. Since it is stretched in a state where the flat surface is opposed to or in contact with the gum 45 without being locked to the rope stopper, these members are twisted against the gum and the like, and hit in a crossed state. It won't bite and hurt your gums.

  Then, as shown in FIG. 3, by applying a traction urging force on the extension side of the traction rope stopper 24 with a part of the bending wire 12 curvedly arranged substantially obliquely toward the rear side, the rectangular wire portion 10 and FIG. 11 is always applied to the fixed portion 28, and it is possible to simultaneously pull the front teeth and the canine teeth backward while controlling the inclination of the front teeth. Although three spool bodies are provided in the present embodiment, four or five spool bodies may be provided, or six or more spool bodies may be provided as long as practical use is not hindered.

FIG. 4 shows the tractor 50 of the first traction urging device 14, and as shown in the figure, the tractor 50 engages one end 52 a with the fixed source 60 and extends the other end 52 b linearly. The other end 52b is a coil spring with a locking length adjusting mechanism that locks the locking length L with the tow rope stopper 24 in an adjustable manner. That is, the coil spring includes a coil portion 54 as a spring coil, and two straight thin ligature wires 56 that are connected to the coil portion 54 via a connection cylinder 55 and extend to the other end side. The two straight portions 56 are separated from each other at the tip, and the entire length can be freely adjusted by hooking the tip onto the small-diameter portion 38 of the hook 32 and twisting the tip as shown in FIG. Therefore, the rear traction force can be adjusted by the coil portion 54 as well as adjusting the overall length by changing the torsion stop position. Thus, for example, if a certain traction force is exhibited corresponding to the length 54L of the predetermined coil portion 54, by adjusting the locking length by visual adjustment so as to always obtain the coil spring length. A constant rear traction force can be continuously applied, and the rear traction force can be optimized. In addition, you may use the thing of the structure like FIG. 10 which formed the several ring part continuously connected in series, for example using the soft elastic synthetic resin as the traction device 50. FIG. One end side 52a of the retractor 50 engages with a detachable portion 62 of a micro screw 60 as a fixation source embedded in the alveolar bone. Therefore, in the case of this embodiment, the tow device 50 pulls the cantilever spool body 34c at the most distal end of the tow rope stopper 24 in a straight line obliquely rearward in parallel with the bending wire 12 in a side view. With the maximum rotational torque, a torque load is continuously applied in the counterclockwise direction in FIG. 12 with the square wire portion 121 as a fulcrum, and this enables rearward (lingual side) traction while controlling the inclination of the front tooth portion. .

In FIG. 2, the second traction urging device 18 has both ends locked to the canine side brackets 22 a (g) and 22 b (g) and the fixing source micro screw 60, and only the canines n <b> 1 and n <b> 2 are rearward independently. The towing device is constituted by a coil spring with a locking length adjusting mechanism having the same configuration as that of the towing device 50, for example. This second traction urging device may use a bead-shaped ring connecting member made of soft elastic synthetic resin. Brackets 22a (g) and 22b (g) for the canine are used as guides 16 for guiding the bending wire 12 so as to freely engage with each other. As shown in FIG. 5, the bending wire 12 is freely movable in the longitudinal direction. . At the same time, the brackets 22a (g) and 22b (g) fixed to the canine are independently pulled backward by the second pulling / biasing device 18, thereby separating the front teeth from the four front teeth and simultaneously pulling the canines backward. In addition, the canine can be moved more smoothly than the method of pulling the six teeth together and pulling backward as a whole.

  Next, the operation of the embodiment of the present orthodontic apparatus will be described. When the front teeth and the canine are pulled backward, the apparatus is set and a pulling engagement member 32 is attached to one of the hook portions 32 of the tow rope stopper 24. The ring portion 52b of the stopper 50 is externally hooked, and the extended portion side of the tow rope stopper 24 is traction-biased rearward (diagonally rearward) in parallel or parallel to the bending wire 12. At the same time, the canines n1 and n2 are independently pulled backward and biased by the second pulling and biasing device 18 through the same fixed source (60). The four front teeth are fixed via the bending wire 12 and the first bracket 20a, but the canine teeth can be freely engaged at the portions 22a (g) and 22b (g). As a result, the rear traction by the first traction biasing device 14 for the four front teeth is separated from the rear traction bias for the canine teeth, and the rear traction biasing force for each is applied. Is less likely to come into contact with the cortical bone, and as a result, the 6 front teeth can be retracted early. At the same time, since the rectangular wire portion 12 of the bending wire and the tow rope stopper 24 are connected on the extension portion side (for example, the engagement position with the cantilever spool body 34c) and pulled backward, the tow rope stopper 24 and Rotational torque is generated using the joint J with the bending wire 12 as a fulcrum, thereby enabling movement to the lingual side while controlling the inclination of the front tooth portion. Further, since the hook portions 32 of the tow rope stopper 24 are installed at a plurality of positions vertically separated from the curved wire portion, the locking position of the tow device 50 is set closer to the wire side than the most advanced one. It is possible to change the position of the first pulling / biasing device 14, thereby adjusting the pulling direction of the first pulling / biasing device 14 and adjusting the rotational torque by the rectangular wire portion 121.

  The orthodontic apparatus of the present invention described above and the tow rope stopper used therein are not limited to the above-described embodiments.

FIG. 3 is a top plan view of the orthodontic appliance in a state where it is mounted on the maxillary dentition of the orthodontic appliance according to the embodiment of the present invention. It is a partial enlarged view of the side view principal part of the orthodontic apparatus of FIG. FIG. 2 is an enlarged explanatory view of a part of the omitted plan view of FIG. 1. It is expansion explanatory drawing which shows the back traction structure by the traction device of the apparatus of FIG. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is a side view of the tow rope stop of the orthodontic apparatus of FIG. It is a perspective view of the tow rope stopper of FIG. It is a front view of the tow rope stopper of FIG. It is an expansion perspective view which shows the other example of a traction device. It is action | operation explanatory drawing of the orthodontic apparatus of FIG. It is action | operation explanatory drawing of the orthodontic apparatus of FIG. It is an expansion side explanatory view at the time of towing using other towing machines.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Orthodontic apparatus 12 Bending wire 121 Rectangular wire part 122 Circular wire part 14 1st traction biasing device 16 Guide (guide) slot 18 2nd traction biasing device 20, 22 Bracket 24 Towing rope stop 26 Shaft rod 28 Fixed part 32 Hanging part 34 Cantilever spool body 38 Small diameter part 40 Enlarged part 50 Traction device J Joint part

Claims (4)

A bending wire that is fixed to the front tooth portion and is bent along the side tooth portion;
First traction biasing means including a traction device that pulsates both ends of the bending wire toward the rear,
A second traction urging means for urging and urging the hook fixed to the canine backward,
The bending wire includes a rectangular wire portion having a polygonal cross section arranged at a portion along the four front teeth side, and a circular wire portion having a circular cross section arranged along the canine and molar teeth continuously from the end of the square wire portion, respectively. A composite wire body having one end fixed to the square wire portion and the other end extended and held in a substantially vertical direction from the bending wire portion, and the extension portion is parallel to the bending wire by the first pulling biasing means. An orthodontic apparatus comprising a tow rope stopper provided in such a manner that a rotational load is applied to the square wire portion while being pulled and biased by the wire. The tow rope stop according to claim 1,
A plurality of the tow rope stoppers are installed in multiple stages at intervals in the extending direction of the shaft rod extending from the square wire portion side, and the towing device of the first towing urging means is externally attached and can be freely attached and detached. A retractable rope stop for an orthodontic apparatus, comprising a hook portion formed of a plurality of cantilever spool bodies in which a narrow diameter portion and an enlarged portion continuous with the narrow diameter portion are integrated. The pulling cord stopper of the orthodontic appliance according to claim 2, wherein a plurality of stages of the wire pulling cord stopper are installed. A coil spring that locks one end to a fixed source, extends the other end, and engages with the extension of the tow rope stopper. This coil spring is always 100g suitable for tooth movement when stretched to a certain length. The tractor according to any one of claims 1 to 3, wherein the tractor is designed to exert a heavy or 150g heavy traction force.

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