Double-jaw dental arch linkage appliance

Abstract

The utility model provides a double-jaw dental arch linkage appliance. The appliance comprises a maxillary tooth correction assembly and a mandibular tooth correction assembly, the maxillary tooth correction assembly comprises an expander and two groups of upper molar fixing parts symmetrically arranged on two sides of the expander, and a first traction hook is arranged on the tongue side of an upper molar band on the outermost side, far away from upper incisors, of each group of upper molar fixing parts; a first buccal tube with a ring is arranged on the buccal side; the mandibular tooth correction assembly comprises two groups of symmetrically arranged lower molar fixing pieces and a mandibular tooth arch wire connected between the two groups of lower molar fixing pieces, and a second band buccal tube is arranged on the cheek side of the outermost lower molar band, far away from the lower incisors, of each group of lower molar fixing pieces; and two boot-shaped curves are symmetrically bent on the cheek side of the mandibular dental arch wire corresponding to the positions of mandibular canine teeth. According to the orthodontic device, the upper jaw dental arch can move forwards, the lower jaw dental arch can move backwards, the jaw position can be adjusted, the original mesial dislocation molar relation is adjusted to the neutral, remote and middle molar relation, and the orthodontic device is used for orthodontic treatment aiming at osseous reverse inhale.

Description

Technical Field

[0001] This utility model relates to an orthodontic appliance, and more particularly to a bimaxillary arch linkage appliance. Background Technology

[0002] Anterior crossbite is a relatively high proportion of malocclusion in adolescents, including dental crossbite, functional crossbite, and skeletal crossbite. The latter, in particular, is a type of malocclusion that is more difficult to treat in orthodontic clinics. In orthodontic practice, removable double-curved tongue spring appliances, FR-3 functional appliances, or anterior traction appliances are commonly used for treatment. Patent No. ZL 2016 20007 236.2 discloses a maxillary arch advancement appliance, which consists of two parts: a 4-hook Nance bracket for the maxilla, which is formed by using a front adhesive bracket connected to a wire and setting a thick wire traction hook (welded to the band) on the palatal side of the first molar band, plus the traction hook attached to the buccal tube of the molar band, thus forming the 4-hook Nance bracket on both sides. The mandibular first molar band uses a lingual arch constructed from 0.9mm stainless steel wire. The archwire at the front of the archwire is tightly pressed against the lingual surface of the lower anterior teeth, enhancing anchorage and preventing lingual tipping of the lower incisors. The labial arch uses a 0.8mm stainless steel wire, with both ends bent into boot-shaped curves at the canines, pointing distally. The wire is bent into wavy or fence-like curves at the premolar segment, and a buccal shield is constructed by padding with self-curving plastic. The distal free end of the wire is welded to the first molar band. Excess wire can be bent upwards and mesially to the occlusal surfaces of the molars and premolars as a posterior occlusal pad support. Alternatively, the wire can be cut and welded distal to the molar band. The occlusal surfaces of the molars are made of resin-bonded occlusal pads. The maxillary four-hook Nance arch is fitted with four rubber bands to the boot-shaped curves at the two mandibular canines. Orthodontic forces are applied to move the maxillary arch forward and the mandibular arch backward to correct reverse occlusion in children during the mixed dentition period.

[0003] After years of clinical application, it has been found that the maxillary 4-hook Nance arch of the maxillary arch advancement appliance in the above-mentioned patent has a simple structure and limited use. It cannot correct cases of narrow maxillary arch, uneven width of upper and lower dental arches, full arch crossbite, and skeletal crossbite. The mandibular appliance has a complex manufacturing process. A pair of molar bands are set behind the mandible for retention, and the stability of the labial arch in front of it is poor. When four rubber bands are hung to implement composite Class 3 traction, the vertical component of the force causes the anterior labial arch to move upward toward the incisal edge, or even cross the incisal edge, affecting the orthodontic effect. Summary of the Invention

[0004] This invention provides a bimaxillary dental arch linkage orthodontic appliance to address the shortcomings of existing technologies. The appliance not only adds a device for expanding the maxillary dental arch, but also increases the mandibular retention from 2 abutment teeth to 4-6 abutment teeth, thereby expanding the treatment range and improving the treatment quality.

[0005] To solve the above-mentioned technical problems, this utility model provides a bimaxillary dental arch linkage orthodontic appliance, which includes a maxillary orthodontic component and a mandibular orthodontic component. The maxillary orthodontic component is used in conjunction with the mandibular orthodontic component, or the maxillary orthodontic component is used in conjunction with a Class III linkage tether.

[0006] The maxillary orthodontic assembly includes an expander and two sets of upper molar fixation components symmetrically arranged on both sides of the expander. Each set of upper molar fixation components includes two or three upper molar bands, and two of the upper molar bands in each set of upper molar fixation components are connected to the expander as a whole by connecting archwires. A first traction hook is provided on the lingual side of the outermost upper molar band away from the upper incisor in each set of upper molar fixation components, and a first band buccal tube is provided on the buccal side of the outermost upper molar band.

[0007] The mandibular orthodontic assembly includes two sets of symmetrically arranged lower molar fixation members and a mandibular archwire connecting the two sets of lower molar fixation members. Each set of lower molar fixation members includes two or three lower molar bands. A second band buccal tube is provided on the buccal side of the outermost lower molar band away from the lower incisors of each set of lower molar fixation members. Two boot-shaped bends are symmetrically bent on the buccal side of the mandibular archwire. The two boot-shaped bends are located on the buccal side of the two mandibular canines respectively.

[0008] The preferred technical solution of this utility model is as follows: the amplifier is an MSE bone amplifier or a spiral amplifier. When the amplifier is a spiral amplifier, two symmetrical wide rubber supports are wrapped around the front end connecting steel wire of the spiral amplifier, and a slit is provided between the two wide rubber supports.

[0009] The preferred technical solution of this utility model is as follows: a transparent strip of adhesive is laid on the horizontal wire of the mandibular archwire near the labial surface of the four mandibular incisors.

[0010] The preferred technical solution of this utility model is as follows: the mandibular archwire includes a labial arch and a lingual arch, the two ends of the labial arch and the lingual arch are respectively welded to two sets of lower molar fixation components as a whole, the labial arch is bent into two symmetrical boot-shaped curves on the buccal side of the two mandibular canines, and the boot toes of the two boot-shaped curves face opposite directions.

[0011] The preferred technical solution of this utility model is as follows: the first traction hook is made of 0.9-1.0mm stainless steel wire, and the tail end of the traction hook is welded to the upper molar fixing part as a whole.

[0012] The preferred technical solution of this utility model is that the MSE bone expander is fixed by four anchorage nails.

[0013] The preferred technical solution of this utility model is that the tongue arch is made of stainless steel wire with a diameter of 0.8-1mm.

[0014] The preferred technical solution of this utility model is that the lip arch and the two boot-shaped curves are made of stainless steel wire with a diameter of 0.7-0.9mm.

[0015] The preferred technical solution of this utility model is as follows: when using the mandibular orthodontic component for correction, the front end wire of the lingual arch is tightly pressed against the crown of the lower anterior tooth at 1 / 2 of the lingual surface.

[0016] The beneficial effects of this utility model are:

[0017] (1) The maxillary dental arch of this utility model adopts 4 abutment teeth with bands for fixation and can be fixed with a spiral expander. The palatal side of the band is designed with a thick wire traction hook. The front end of the spiral expander is connected to the wire with two symmetrical wide rubber brackets. As the opening of the expander increases, the gaps open to both sides. The maxillary dental arch can also use the MSE skeletal expander. It is implanted into the double cortical bone of the maxilla through 4 anchorage screws. By applying orthodontic force, it can open the palatal midline parallel to increase bone volume. At the same time, the buccal 4 tooth band is equipped with a thick wire traction hook on the mesial buccal side. It can be used in conjunction with the anterior traction appliance to effectively correct skeletal malocclusion cases with insufficient maxillary bone development. It is a powerful tool for correcting skeletal malocclusion.

[0018] (2) This utility model uses a spiral expander or MSE bone expansion device. After solving the problem of the width of the upper and lower dental arches, it begins to correct the sagittal (anteroposterior) imbalance of the upper and lower dental arches.

[0019] (3) The abutment teeth of this utility model are all made by casting molar bands. Four to six cast molar bands are used for bonding and retention in the mandible. Transparent strip adhesive is laid on the horizontal wire of the labial arch on the labial surface of the four mandibular incisors to enhance the stability of the labial arch and enhance the anchorage of the anterior teeth. Boot-shaped curves with distal convexity are set at the canines on both sides to hang rubber bands and buffer traction. A fixed lingual arch is set on the lingual side. The wire at the front end of the lingual arch is tightly attached to the 1 / 2 of the crown of the lingual surface of the mandibular anterior teeth, which can enhance the anchorage of the anterior teeth and prevent the anterior teeth from tilting lingually. A lingual warning clip is bonded to the lingual surface of the mandibular anterior teeth, which can also enhance the stability of the lingual arch.

[0020] (4) The maxillary and mandibular dental arches of this invention are used together, and four rubber bands are used to implement composite Class 3 intermaxillary traction. The orthodontic force implemented by the elastic material causes the two dental arches to move in opposite directions, that is, the maxillary dental arch moves forward (mesially) and the mandibular dental arch moves backward (distitudinally), thus correcting the anterior crossbite.

[0021] (5) The maxillary dental arch of this utility model can be used in conjunction with the mandibular Class 3 linkage tie rod device. The maxilla uses the MSE skeletal expander (to expand the maxillary dental arch and correct width discrepancies), and the first molar bands on both sides are set with coarse wire traction hooks on the palatal side. The effect of correcting skeletal malocclusion in three dimensions (length, width, and height) can be achieved by using orthodontic force.

[0022] This invention uses four traction hooks to attach four rubber bands to the boot-shaped curve of the mandibular fixed composite labial arch (or the traction hook of the linkage rod), forming a composite Class 3 intermaxillary traction linkage orthodontic mechanism. This mechanism moves the maxillary dental arch forward and the mandibular dental arch backward, adjusting the jaw position and correcting the originally mesial misaligned molar relationship to a neutral and remote molar relationship. This creates favorable conditions for the second-stage fixed orthodontic appliance treatment and achieves the target position effect for correcting skeletal malocclusion in adolescents and even adults. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the maxillary orthodontic component with six upper molar bands in this utility model;

[0024] Figure 2 This is a schematic diagram of the maxillary orthodontic component with four upper molar bands in this utility model;

[0025] Figure 3 yes Figure 1 Installation diagram of the mid-maxillary orthodontic components;

[0026] Figure 4 This is a schematic diagram of the mandibular orthodontic component with six lower molar bands in this utility model;

[0027] Figure 5 This is a schematic diagram of the mandibular orthodontic component with four lower molar bands in this utility model;

[0028] Figure 6 yes Figure 4 Installation diagram of the mandibular orthodontic components;

[0029] Figure 7 This is a schematic diagram of the overall installation of the maxillary and mandibular orthodontic components of this utility model;

[0030] Figure 8 This is a diagram illustrating the corrective application of this utility model.

[0031] In the diagram: 1—Amplifier, 2—Upper molar fixation piece, 3—Connecting archwire, 4—First traction hook, 5—First buccal tube with ring, 501—Second traction hook, 6—Wide adhesive bracket, 7—Lower molar fixation piece, 8—Mandibular archwire, 8-1—Lip arch, 8-2—Lingual arch, 9—Second buccal tube with ring, 901—Third traction hook, 10—Boot-shaped bend, 11—Transparent adhesive strip, 12—Mandibular canine, 13—Maxillary incisor, 14—Rubber band Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 5All accompanying drawings are simplified versions of embodiments and are intended solely for the purpose of clearly and concisely illustrating the embodiments of this utility model. The technical solutions shown in the drawings below are specific solutions of embodiments of this utility model and are not intended to limit the scope of the claimed utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The embodiment provides a bimaxillary dental arch linkage appliance, such as Figures 1 to 8 As shown, the orthodontic appliance includes a maxillary orthodontic component and a mandibular orthodontic component. The maxillary orthodontic component is used in conjunction with the mandibular orthodontic component, or the maxillary orthodontic component is used in conjunction with a Class III linkage bar.

[0035] like Figures 1 to 3 As shown, the maxillary orthodontic component described in the embodiment includes an expander 1 and two sets of upper molar fixation members 2 symmetrically arranged on both sides of the expander 1. Each set of upper molar fixation members 2 includes two or three upper molar bands, and two of the upper molar bands in each set of upper molar fixation members 2 are connected to the expander 1 by connecting archwires 3. A first traction hook 4 is provided on the lingual side of the outermost upper molar band of each set of upper molar fixation members 2 away from the upper incisors. The first traction hook 4 is made of 0.9mm stainless steel wire, and the tail end of the first traction hook 4 is welded to the upper molar fixation member 2. A first band buccal tube 5 is provided on the buccal side of the outermost upper molar band, and the first band buccal tube 5 has a second traction hook 501. The expander 1 is an MSE skeletal expander or a spiral expander. The MSE skeletal expander is implanted into the double-layer cortical bone of the maxilla through four anchorage screws. When the amplifier 1 is a spiral amplifier, two symmetrical wide rubber supports 6 are wrapped around the front end connecting steel wire of the spiral amplifier, and there is a slit between the two wide rubber supports 6. As the slit of the amplifier increases, the gap spreads to both sides.

[0036] like Figures 4 to 6As shown, the mandibular orthodontic component in this embodiment includes two symmetrically arranged lower molar fixation members 7 and a mandibular archwire 8 connecting the two sets of lower molar fixation members 7. Each set of lower molar fixation members 7 includes two or three lower molar bands. A second band buccal tube 9 is provided on the buccal side of the outermost lower molar band away from the lower incisors of each set of lower molar fixation members 7. The second band buccal tube 9 has a third traction hook 901. Two boot-shaped bends 10 are symmetrically bent on the buccal side of the mandibular archwire 8, and the two boot-shaped bends 10 are located on the buccal side of the two mandibular canines, respectively. A transparent strip of adhesive 11 is laid on the horizontal wire of the mandibular archwire 8 near the labial surface of the four mandibular incisors. The mandibular archwire 8 includes a labial arch 8-1 and a lingual arch 8-2. The two ends of the labial arch 8-1 and the lingual arch 8-2 ​​are welded to two sets of lower molar fixation members 7. The labial arch 8-1 is bent into two symmetrical boot-shaped bends 10 on the buccal side of the two mandibular canines, with the toes of the two boot-shaped bends facing opposite directions. The lingual arch 8-2 ​​is made of 0.8–1 mm thick stainless steel wire. The labial arch 8-1 and the two boot-shaped bends 10 are made of 0.7–0.9 mm thick stainless steel wire. The front end of the lingual arch 8-2 ​​is tightly pressed against the lingual crown of the lower anterior teeth at half their length.

[0037] The maxillary orthodontic component and mandibular orthodontic component of this utility model are described in detail below with reference to specific embodiments:

[0038] The maxillary orthodontic components provided in Example 1, such as Figure 1 As shown, it includes a spiral expander and six upper molar belt rings. The specific installation is as follows: Figure 3 As shown, the three upper molar bands on each side are respectively installed on the first premolar, second premolar and first molar adjacent to the canine. A coarse wire traction hook is designed on the palatal side of the first molar band. Two symmetrical wide rubber brackets are wrapped on the front end connecting wire of the auger amplifier. The gaps spread out to both sides as the opening of the amplifier increases.

[0039] The maxillary orthodontic components provided in Example 2, such as Figure 2 As shown, the most advanced MSE skeletal expander in the field of orthodontics today is used. It is implanted into the double-layer cortical bone of the maxilla through four anchorage screws. By applying orthodontic force, it can open the palatal midline parallel to increase bone volume. It has four upper molar bands. During installation, the two upper molar bands on each side are fixed to the first premolar and the second premolar respectively. At the same time, a thick wire traction hook is equipped on the buccal side of the fourth tooth band, which is used in conjunction with the anterior traction appliance. It is specifically designed to correct skeletal malocclusion cases with maxillary hypoplasia and is a powerful tool for correcting skeletal malocclusion.

[0040] The mandibular orthodontic component provided in Example 3, such as Figure 4 As shown, the mandible uses six cast mandibular bands for bonding and retention. In actual installation and use, as follows... Figure 6As shown, six lower molar bands are fixed to the first premolar, second premolar, and first molar adjacent to the canines on both sides of the mandible. Transparent strip-shaped adhesive brackets 11 are laid on the horizontal wire of the labial arch on the labial surface of the four lower incisors to enhance the stability of the labial arch and strengthen the anchorage of the anterior teeth. Boot-shaped bends 10 with curved convexities pointing distally are set at the canines on both sides to hang rubber bands and buffer traction force. A fixed lingual arch is set on the lingual side, with the front wire of the lingual arch tightly abutting against the crown 1 / 2 of the lingual surface of the lower anterior teeth to enhance the anchorage of the anterior teeth and prevent the anterior teeth from tilting lingually.

[0041] The mandibular orthodontic component provided in Example 4, such as Figure 5 As shown, the mandible is secured using four cast molar bands, which are installed in the same way as in Example 3, except that the four mandibular bands are fixed to the second premolars and the first molars on both sides of the mandible, respectively.

[0042] In Examples 3 and 4, the mandibular orthodontic components use the first to first deciduous molars (or first premolars) on both sides of the dental arch as abutment teeth. The lingual arch 8-2 ​​is made of 0.9mm diameter stainless steel wire, bent tightly against the upper edge of the lingual protuberance of the lower anterior teeth, approximately at the upper 1 / 3 of the dental arch. The free ends of the lingual arch wires on both sides are welded to the first deciduous molar bands. The front end of the lingual arch wire is tightly against the lingual surface of the lower anterior teeth, enhancing anchorage and preventing lingual tipping of the lower incisors. The labial arch 8-1 is made of 0.8mm stainless steel wire, with boot-shaped bends at both ends at the canines, with the free ends of the labial arch wires on both sides welded to the first deciduous molar bands. To discourage tongue protrusion, lingual clips are bonded to the lingual surfaces of the lower anterior teeth to deter tongue protrusion and further enhance the stability of the lingual arch. Transparent adhesive strips are laid on the horizontal wires of the labial arch on the labial surfaces of the four lower incisors to enhance the stability of the labial arch and strengthen anterior tooth anchorage.

[0043] The maxillary orthodontic components in Examples 1 and 2 can be used in conjunction with the mandibular orthodontic components in Examples 3 and 4. The maxillary orthodontic components in Examples 1 and 2 can also be used in conjunction with Class 3 linkage tether devices. The maxilla uses an MSE skeletal expander to enlarge the maxillary dental arch, corrects width discrepancies, and sets coarse wire traction hooks on the palatal side of the first molar bands on both sides. The principle of "lateral first, width priority" is adopted by using a spiral expander or an MSE skeletal expander. After resolving the width discrepancy between the upper and lower dental arches, the sagittal (anteroposterior) discrepancy between the upper and lower dental arches is then corrected.

[0044] When maxillary orthodontic components are used in conjunction with mandibular orthodontic components, such as Figure 8As shown, the maxillary and mandibular orthodontic components are connected by four elastic bands 14. Two elastic bands 14 on each side are attached at one end to the boot-shaped bend 10 on the corresponding side of the mandibular orthodontic component. The other end of one elastic band is attached to the first traction hook 4 on the same side of the maxillary orthodontic component, and the other end of the other elastic band is attached to the second traction hook 501 on the same side of the maxillary orthodontic component. The orthodontic force applied by the elastic material causes the bimaxillary dental arches to move in opposite directions, that is, the maxillary dental arch moves forward (mesially) and the mandibular dental arch moves backward (distarily), correcting the anterior crossbite. For maxillary hypoplasia and more severe skeletal crossbite, an anterior traction appliance should be used in conjunction for treatment.

[0045] For patients with Class III linkage traction rods fitted to the mandible, the installation position of the maxillary orthodontic components remains unchanged, the position of the four hooks of the composite Class III elastic traction maxilla remains unchanged, and the mandibular ends of the four rubber bands are hung on the traction hooks of the Class III linkage traction rods located at the canines; by using orthodontic force, the effect of correcting skeletal malocclusion in three dimensions of length, width and height is achieved.

[0046] The following is a further explanation of this utility model with a specific application example. This example involves a 16-year-old patient with skeletal crossbite. The maxilla was treated with the MSE skeletal expansion device. A thick wire traction hook (with 4 traction hooks) was welded to the palatal side of the maxillary first molar band. The mandible used a Class 3 linkage traction device; composite Class 3 traction was implemented for correction. Due to the severity of the condition, a 1.0mm diameter stainless steel wire was welded to the buccal first molar band and the anterior first deciduous molar (or first premolar) band of the maxillary orthodontic component. The mesial end of the wire was bent into a traction hook at the canine. This traction hook was attached to a weighted rubber band on the hook of the anterior traction device, pulling the maxilla forward. Through the above optimized design, the posterior crossbite and complete arch crossbite caused by the narrow maxillary dental arch were corrected, as well as the width imbalance between the upper and lower dental arches.

[0047] This utility model of a bimaxillary arch linkage orthodontic appliance is a functional orthodontic appliance for adjusting jaw position, suitable for primary orthodontic treatment. It consists of four traction hooks with four rubber bands attached to the boot-shaped curve of the mandibular fixed composite labial arch (or the traction hook of the linkage rod), forming a composite Class 3 intermaxillary traction linkage orthodontic mechanism. This mechanism moves the maxillary arch forward and the mandibular arch backward, adjusting jaw position and correcting the originally mesial misaligned molar relationship to a neutral and remote molar relationship. This creates favorable conditions for secondary fixed orthodontic appliance treatment and achieves the target position effect for correcting skeletal malocclusion in adolescents and even adults.

[0048] The above description is merely one embodiment of this utility model, and while it is quite specific and detailed, it should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A bimaxillary dental arch linkage orthodontic appliance, characterized in that: The orthodontic appliance includes a maxillary orthodontic component and a mandibular orthodontic component. The maxillary orthodontic component is used in conjunction with the mandibular orthodontic component, or the maxillary orthodontic component is used in conjunction with a Class III linkage bar. The maxillary orthodontic assembly includes an expander (1) and two sets of upper molar fixation members (2) symmetrically arranged on both sides of the expander (1). Each set of upper molar fixation members (2) includes two or three upper molar bands, and two of the upper molar bands in each set of upper molar fixation members (2) are connected to the expander (1) by connecting archwires (3). A first traction hook (4) is provided on the lingual side of the outermost upper molar band away from the upper incisor in each set of upper molar fixation members (2), and a first band buccal tube (5) is provided on the buccal side of the outermost upper molar band. The mandibular orthodontic assembly includes two sets of symmetrically arranged lower molar fixation members (7) and a mandibular archwire (8) connected between the two sets of lower molar fixation members (7). Each set of lower molar fixation members (7) includes two or three lower molar bands. A second band buccal tube (9) is provided on the buccal side of the outermost lower molar band away from the lower incisors of each set of lower molar fixation members (7). Two boot-shaped bends (10) are symmetrically bent on the buccal side of the mandibular archwire (8). The two boot-shaped bends (10) are located on the buccal side of the two mandibular canines respectively.

2. The bimaxillary dental arch linkage appliance according to claim 1, characterized in that: The expander (1) is an MSE bone expander or a spiral expander. When the expander (1) is a spiral expander, two symmetrical wide rubber supports (6) are wrapped around the front end connecting wire of the spiral expander, and there is a slit between the two wide rubber supports (6).

3. A bimaxillary dental arch linkage appliance according to claim 1 or 2, characterized in that: A transparent strip of adhesive (11) is laid on the horizontal wire of the mandibular archwire (8) near the labial surface of the four mandibular incisors.

4. A bimaxillary dental arch linkage appliance according to claim 1 or 2, characterized in that: The mandibular archwire (8) includes a labial arch (8-1) and a lingual arch (8-2). The two ends of the labial arch (8-1) and the lingual arch (8-2) are welded together with two sets of lower molar fixation members (7). The labial arch (8-1) is bent on the buccal side of the two mandibular canines to form two symmetrical boot-shaped curves (10), and the boot toes of the two boot-shaped curves (10) face opposite directions.

5. A bimaxillary arch linkage orthodontic appliance according to claim 1 or 2, characterized in that: The first traction hook (4) is made of stainless steel wire with a diameter of 0.9 to 1.0 mm, and the tail end of the traction hook (4) is welded to the upper molar fixing part (2).

6. A bimaxillary arch linkage orthodontic appliance according to claim 2, characterized in that: The MSE bony expander is fixed by four anchorage screws.

7. A bimaxillary dental arch linkage appliance according to claim 4, characterized in that: The tongue arch (8-2) is made of stainless steel wire with a diameter of 0.8-1mm.

8. A bimaxillary arch linkage orthodontic appliance according to claim 4, characterized in that: The lip arch (8-1) and the two boot-shaped curves (10) are made of stainless steel wire with a diameter of 0.7-0.9 mm.

9. A bimaxillary dental arch linkage appliance according to claim 4, characterized in that: When using the mandibular orthodontic component for correction, the front wire of the lingual arch (8-2) is tightly pressed against the crown of the lower anterior tooth at 1 / 2 of the lingual surface.

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