CN111991107A - Depressed upper anterior teeth corrector and correction method - Google Patents

Abstract

A depressed upper anterior teeth corrector and correction method comprises a micro-implant anchorage nail, a main arch, an auxiliary arch and a bracket; the bracket is fixed on the dental crown of the upper anterior tooth to be adjusted, the main arch transversely penetrates through the bracket to connect a plurality of brackets positioned on different dental crowns, the micro-implant anchorage pins are respectively arranged on the buccal side between the second anterior molar and the first molar on the left side and the right side of the upper jaw, and the two ends of the auxiliary arch are respectively connected with the micro-implant anchorage pins to form the depressing acting force on the upper anterior tooth; the auxiliary arch is combined with the planting nail, the acting force of the auxiliary arch directly acts on the upper anterior teeth, the reacting force is offset on the planting nail, and no adverse effect is caused on the dentition; the function of absolute depression is played to the anterior teeth under the condition that the posterior teeth are not influenced.

Description

Depressed upper anterior teeth corrector and correction method

Technical Field

The invention relates to a dental appliance, in particular to a depressed upper anterior dental appliance comprising a micro-implant anchorage nail strong anchorage and an auxiliary arch and a correction method.

Background

Open-gingiva refers to smiling with excessive exposure of the anterior labial gingiva of the upper jaw (typically greater than 2mm), which can undermine the aesthetic and harmonious appearance of the face to some extent and even create a psychological burden on some beauty-seeking people. Gummy smile is not uncommon in the population, and many patients require orthodontic treatment to improve gummy smile. The traditional treatment method is to press down the upper front teeth by opening the auxiliary arch, but the method has the effect of stretching the rear teeth while pressing down the front teeth, and patients with severe gingival laughing cannot achieve satisfactory treatment effect. The implant anchorage is considered as absolute anchorage and is applied clinically, the anchorage provided by the implant nail is different from the traditional anchorage when the upper anterior tooth is pressed down, the tail end of an auxiliary arch is inserted into a hole of the head of the implant anchorage, the applied traction force directly acts on the upper anterior tooth, a large amount of anterior tooth root movement can be generated, gingival exposure smile can be improved, and the implantation part is usually between the upper jaw premolar and the first molar or between the first molar and the second molar. The implant point is located vertically towards the area of the membrane-gingival junction near the attached gingiva. The implant anchorage can meet the requirement of orthodontic absolute anchorage and is superior to other anchorages.

The traditional treatment method is to press down the upper front teeth by opening the auxiliary arch, but the method has the effect of stretching the rear teeth while pressing down the front teeth, and patients with severe gingival laughing cannot achieve satisfactory treatment effect. The implant anchorage is considered as an absolute anchorage and is applied clinically, the anchorage provided by the implant nail is different from the traditional anchorage when the upper anterior tooth is pressed down, the tail end of the auxiliary arch is inserted into a hole of the head of the implant anchorage, the applied traction force directly acts on the upper anterior tooth, a large amount of anterior tooth root movement can be generated, and the improvement of the gingival exposure smile is facilitated.

In orthodontic procedures, any force applied to the orthodontic tooth to cause it to move must simultaneously produce a force of opposite direction and equal magnitude, and smaller implants implanted in the mouth to support the reactive forces caused by such moving orthodontic teeth are referred to as "micro-implant anchorage pins". In order to realize ideal tooth movement in treatment, particularly in the case of tooth extraction correction, in order to ensure that anchorage provided by a micro-implant anchorage nail is different from the traditional anchorage when anterior teeth are adducted, high requirements are required on the size, the shape and the implantation position of the micro-implant anchorage nail and the traction angle of a gap closing arch wire, so that traction force is not applied to posterior teeth as much as possible, posterior teeth are not moved forwards, and the closing of the tooth extraction gap can be completely completed by the adduction of the anterior teeth. In addition, when the anterior teeth are adducted, the teeth are easy to extend due to the pendulum effect in the traditional method, and the roller coaster effect appears, so that for a long time, many scholars press the anterior teeth by means of micro-implant anchorage, J-hook and the like, and the treatment effect is poor because patients cannot cooperate effectively.

CN108294838A discloses a lower anterior tooth unscrambler, including two sets of planting a little anchorage nail, first group planting a little anchorage nail sets up in the buccal side between upper jaw second anterior molar and the first molar, membrane gum joint department, be 45 with the tooth axle, second group planting a little anchorage nail sets up between upper jaw side incisor and cuspid, membrane gum joint department, be 45 with the tooth axle, the cortex of second between the anterior molar prepares a plurality of cortex gaps, first group planting a little anchorage nail size is greater than second group planting a little anchorage nail size about the upper jaw, the unscrambler is including drawing the hook and closing the gap arch wire, draws hook one end to set up on closing the gap arch wire, and the other end passes through rubber chain or extension spring and links to each other in planting a little anchorage nail. The mode of having two sets of anchorage nails makes tooth moving speed accelerate in the orthodontic process, but because the anchorage nail of planting is more, the wound surface that causes the patient is bigger, and the misery is great.

CN203953844U discloses a planting nail structure, including left and right U type silk body, left and right U type silk body sets up relatively to connect through the top of vertical part, form a retainer plate in the one end junction of two U type silk bodies, be equipped with respectively at the other end of two U type silks the left and right horizontal silk body that is 90 degrees buckles to each other, two horizontal silk body front ends are equipped with the crotch. The technique can avoid oppressing the soft tissue of the gum, but the Australian silk structure in the technical scheme is complex, and the operation difficulty is large.

Disclosure of Invention

In view of the problems of the prior art, it is an object of the present invention to provide a depressing upper anterior teeth corrector which performs an absolute depressing action on anterior teeth without affecting posterior teeth. A depressed upper anterior orthodontic appliance according to the present application is characterized by comprising a micro-implant anchorage pin, a main arch, an auxiliary arch and a bracket; the bracket is fixed on the dental crown of the upper anterior tooth to be adjusted, the main arch transversely penetrates through the bracket to connect a plurality of brackets on different dental crowns, the left and right micro-implant anchorage pins are respectively arranged on the buccal side between the second anterior molar and the first molar on the left and right sides of the upper jaw, and the two ends of the auxiliary arch are respectively connected with the micro-implant anchorage pins to form the depressing acting force on the upper anterior tooth.

Further, the micro-implant anchorage nail is arranged at the joint of the membrane and the gum on the buccal side and is 45 degrees with the tooth axis.

Furthermore, the main arch adopts 0.019 x 0.025 inch square titanium wires or 0.019 x 0.025 inch stainless steel square wires; the auxiliary arch was 0.018 inch Australian wire.

Further, the auxiliary arch is bent into an arch shape which is 3-5mm larger than the upper jaw arch, after the planting nails are inserted into two sides, the mark is made at the front 2mm of the planting anchorage nail, the auxiliary arch is taken out, the rear end of the mark is bent to form a backward tilting curve of 45 degrees, the auxiliary arch is inserted again, when the auxiliary arch is not tied to the main arch wire, the arch wire is positioned at the bottom of the vestibule ditch under the state of no force application and rotation, the auxiliary arch wire is pulled down and tied to the main arch wire to apply force, and then the auxiliary arch wire has the function of pressing down to the gum on the whole upper front tooth.

Further, the auxiliary arch is combined with the planting nail, the acting force of the auxiliary arch directly acts on the upper anterior teeth, and the reacting force counteracts on the planting nail; the auxiliary bow is divided into a connecting section, a transition section and a middle section; the two ends of the auxiliary arch are connecting sections which are respectively connected with the micro-implant anchorage nails on the left side and the right side, a section of Australian thread bent from the connecting sections to the dental crown direction forms an arc transition section, the inclined angle of the transition section extending to the dental crown direction is determined according to the shape of the dental alveolus, and the distance between the inclined angle and the mucosal surface is 1mm, so that the gum compression is avoided; the mid-section cooperates with the main arch 2 and bracket 4 to apply a force in a predetermined direction to the crown of the upper front tooth.

Further, it is little to plant anchorage nail including planting a little anchorage nail head, planting an anchorage nail neck and planting an anchorage nail screw thread portion a little, and it is 1.5 by 8mm or 1.5 by 10mm to plant an anchorage nail size a little, the smooth surface of gum portion appearance of wearing of planting an anchorage nail neck a little has antibacterial coating, plant an anchorage nail neck a little with it is connected a little that planting an anchorage nail head is slick and sly, the neck of planting a nail needs to have the aperture, can insert the assistance bow that 0.018 inch australian silk was made.

Further, the head part of the micro-implant anchorage nail is of a cylinder structure, one side of the cylinder structure is an arc surface which forms an angle of 45 degrees with the long axis of the micro-implant anchorage nail, the neck part of the micro-implant anchorage nail comprises a gum penetrating part, and the threaded part of the micro-implant anchorage nail comprises a cortical bone section and a cancellous bone section; the upper 2mm of the screw thread part of the anchorage nail is the cortical bone section, the screw thread interval is 0.15mm, the screw thread depth is 0.2mm, the lower part is the cancellous bone section, the screw thread interval is 0.2mm, the screw thread depth is 0.2mm, and the tip of the micro-implant anchorage nail is provided with a self-tapping cutting edge.

Furthermore, the auxiliary arch is combined with the planting nail, the acting force of the auxiliary arch directly acts on the upper anterior tooth, and the force can be continuously and softly applied along the long axis direction of the tooth, so that the function of true depression is achieved.

Furthermore, the auxiliary arch can press down the anterior teeth, and can also press down the anterior molars and the molar teeth by changing the bending form of the auxiliary arch under the condition of changing the stress application mode.

The invention also relates to a method for correcting the depressed upper anterior teeth, which comprises the following steps:

s1, performing correction planning and design according to the tooth state, and determining the size, shape, planting position and traction angle of the gap closing arch wire of the micro-implant nail;

s2, transversely penetrating a main arch of a fixing bracket on the dental crown of the upper anterior tooth to be adjusted to connect a plurality of brackets on different dental crowns;

s3, arranging micro-implant anchorage pins at the buccal side and the joint of the membrane and the gum at 45 degrees with the dental axis between the second premolar and the first molar on the left and right sides of the upper jaw respectively;

s4, bending the auxiliary arch into an arch shape 3-5mm larger than the upper jaw arch, marking the front 2mm of the micro-implant anchorage nail after inserting the implant nail at both sides, taking out the auxiliary arch, bending the rear end of the marked part into a backward bending of 45 degrees, and then inserting the auxiliary arch, wherein the arch wire is positioned at the bottom of the vestibular ditch under the state of no force application and rotation when the auxiliary arch wire is not ligated to the main arch wire;

s5, the auxiliary arch wire is pulled down and tied to the main arch wire to apply force, so that the auxiliary arch wire has the function of pressing the whole upper front teeth down towards the gum;

and S6, under the condition that the pressing effect is obvious after a period of time, reducing the backward bending of the auxiliary arch, and applying force to adduct the anterior teeth through the implant nail.

According to the upper front teeth pressing down corrector and the correcting method, under the condition that rear teeth are not affected, an absolute pressing down effect is exerted on the front teeth; the implant nail is not required to be implanted in the anterior tooth area, so that the wound is reduced, and the cost of a patient is reduced; can continuously apply soft force along the long axis direction of the tooth, and plays a role in reducing the truth.

The technology combines the auxiliary arch and the planting nail for the first time, the acting force of the auxiliary arch directly acts on the upper anterior teeth, the reacting force is offset on the planting nail, and no adverse effect is caused on the dentition. The technology has unique innovation on the bending of the auxiliary arch and the implantation angle of the implant nail. The planting nail is matched with the auxiliary arch, and through the change of the bending form of the auxiliary arch, besides the function of pressing down the anterior teeth, the effect of pressing down both the premolar and the molar can be realized under the condition of changing the stress application mode, so that the scheme has wider expansion prospect.

Drawings

FIG. 1 illustrates a first stage corrective configuration for a depressed upper anterior dental corrector in accordance with the present application;

FIG. 2 illustrates a second stage corrective configuration of an depressed upper anterior dental corrector according to the present application;

figure 3 illustrates a third stage corrective configuration for an understeer anterior orthodontic appliance according to the present application.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

Referring to fig. 1-3, the depressed upper anterior dental corrector according to the present invention includes a micro-implant anchorage pin 1, a main arch 3, an auxiliary arch 2 and a bracket 4; the bracket 4 is fixed on the dental crown which needs to be adjusted, the main arch 3 transversely penetrates through the bracket 4 to connect a plurality of brackets 4 positioned on different dental crowns,

the micro-implant anchorage nail 1 is arranged on the buccal side between the second anterior molar and the first molar on the left side and the right side of the upper jaw, and the membrane-gum joint is bent to form a pressing-down auxiliary arch 2 at an angle of 45 degrees and 0.018 inch from the tooth axis.

The micro-planting anchorage nail 1 comprises a micro-planting anchorage nail head, a micro-planting anchorage nail neck and a micro-planting anchorage nail thread part, the size of the micro-planting anchorage nail is 1.5 x 8mm or 1.5 x 10mm, the smooth surface of the gum penetrating part of the micro-planting anchorage nail neck is provided with an antibacterial coating, and the micro-planting anchorage nail neck is connected with the micro-planting anchorage nail head in a smooth manner. The neck of the nail needs to be provided with a small hole for inserting an auxiliary arch made of Australian thread of 0.018 inches.

The head of the micro-implant anchorage nail 1 is of a cylinder structure, one side of the cylinder structure is a cambered surface which forms an angle of 45 degrees with a long shaft of the micro-implant anchorage nail, the neck of the micro-implant anchorage nail comprises a gum penetrating part, and the thread part of the micro-implant anchorage nail comprises a cortical bone section and a cancellous bone section. The upper 2mm of the screw thread part of the anchorage nail is the cortical bone section, the screw thread interval is 0.15mm, the screw thread depth is 0.2mm, the lower part is the cancellous bone section, the screw thread interval is 0.2mm, the screw thread depth is 0.2mm, and the tip of the micro-implant anchorage nail is provided with a self-tapping cutting edge.

The main arch 3 is made of 0.019 × 0.025 inch square titanium wire or 0.019 × 0.025 inch stainless steel square wire, and the auxiliary arch is made of 0.018 inch Australian wire.

Figures 1-3 illustrate three stages, respectively, of a method of depressing an anterior upper dental correction in accordance with the present application. Firstly, bending an auxiliary arch into a dental arch shape which is 3-5mm larger than an upper dental arch, marking the front 2mm of the implant nail after inserting the implant nail at two sides, taking out the auxiliary arch, bending the rear end of the marked part into backward bending of 45 degrees, then inserting the auxiliary arch, positioning the arch wire at the bottom of a vestibule ditch under a non-stress-applying rotation state when the auxiliary arch wire is not ligated to a main arch wire (as shown in figure 1), and performing stress application by pulling down and ligating the auxiliary arch wire to the main arch wire, wherein figure 2 shows a state schematic diagram of partial downward pulling ligation of the auxiliary arch wire, and at the moment, the auxiliary arch 2 and partial bracket 4 are sequentially connected and ligated; fig. 3 shows the auxiliary arch 2 after it has been ligated to all brackets 4, the auxiliary arch wire then having a gingivally depressing effect on the entire upper front tooth. The auxiliary arch 2 is combined with the planting nail, the acting force of the auxiliary arch directly acts on the upper anterior teeth, the reacting force is offset on the planting nail, and no adverse effect is caused on the dentition.

The auxiliary bow 2 is divided into a connecting section, a transition section and a middle section; two ends of the auxiliary arch 2 are connecting sections which are respectively connected with the micro-implant anchorage nails 1 on the left side and the right side, a section of Australian wire bent from the connecting sections to the dental crown direction forms an arc transition section, the inclined angle of the transition section extending to the dental crown direction is determined according to the shape of the dental alveolus, and the distance between the inclined angle and the mucosal surface is 1mm, so that the gum compression is avoided; the middle segment is ligated to the main arch 2 by means of brackets 4, which cooperate with the main arch to exert a force in a predetermined direction on the crown of the upper front tooth.

The depressing upper anterior tooth corrector comprising the micro-implant anchorage nail strong anchorage and the auxiliary arch plays an absolute depressing role on the anterior teeth under the condition of not influencing the posterior teeth; in addition, a planting nail is not required to be implanted in the anterior tooth area, and auxiliary components such as a traction hook, a tension spring and the like are not required, so that the wound is reduced, and the cost and the pain of a patient are reduced; can continuously apply soft force along the long axis direction of the tooth, and plays a role in reducing the truth.

When correcting, firstly, 0.019 x 0.025 inch square titanium wire is added with 0.018 Australian wire auxiliary arch, the auxiliary arch is bent into a tooth arch shape which is 3-5mm larger than the upper jaw tooth arch, after the planting nail is inserted into both sides, the front 2mm of the planting nail is marked, the auxiliary arch is taken out, the rear end of the marked part is bent into 45-degree backward bending, then the auxiliary arch is inserted, when the auxiliary arch is not tied to the main arch wire, the arch wire is positioned at the bottom of the vestibular ditch under the state of no force application, the auxiliary arch wire is pulled down to the main arch wire to apply force, and then the auxiliary arch wire has the function of pressing down to the gum on the whole upper front tooth.

After 2 months there was a significant depression, at which time the upper jaw was replaced with 0.019 x 0.025 inch stainless steel square wire.

The depressing effect is more obvious after 4 months, the anterior teeth are in HE-open state, the backward bending of the auxiliary arch is reduced, and the anterior teeth are adducted by the force applied by the planting nail.

The invention also relates to a method for correcting the depressed upper anterior teeth, which comprises the following steps:

s1, performing correction planning and design according to the tooth state, and determining the size, shape, planting position and traction angle of the gap closing arch wire of the micro-implant nail;

s2, transversely penetrating a main arch of a fixing bracket on the dental crown of the upper anterior tooth to be adjusted to connect a plurality of brackets on different dental crowns;

s3, arranging micro-implant anchorage pins at the buccal side and the joint of the membrane and the gum at 45 degrees with the dental axis between the second premolar and the first molar on the left and right sides of the upper jaw respectively;

s4, bending the auxiliary arch into an arch shape 3-5mm larger than the upper jaw arch, marking the front 2mm of the micro-implant anchorage nail after inserting the implant nail at both sides, taking out the auxiliary arch, bending the rear end of the marked part into a backward bending of 45 degrees, and then inserting the auxiliary arch, wherein the arch wire is positioned at the bottom of the vestibular ditch under the state of no force application and rotation when the auxiliary arch wire is not ligated to the main arch wire;

s5, the auxiliary arch wire is pulled down and tied to the main arch wire to apply force, so that the auxiliary arch wire has the function of pressing the whole upper front teeth down towards the gum;

and S6, under the condition that the pressing effect is obvious after a period of time, reducing the backward bending of the auxiliary arch, and applying force to adduct the anterior teeth through the implant nail.

The technology combines the auxiliary arch and the planting nail for the first time, the acting force of the auxiliary arch directly acts on the upper anterior teeth, the reacting force counteracts on the planting nail, and no adverse effect is caused on the dentition; the auxiliary arch bending and the implantation angle of the implantation nail are both unique and innovative. The planting nail is matched with the auxiliary arch, and through the change of the bending form of the auxiliary arch, besides the function of pressing down the anterior teeth, the effect of pressing down both the premolar and the molar can be realized under the condition of changing the stress application mode, so that the scheme has wider expansion prospect.

Claims (10)

1. A depressed upper anterior teeth corrector is characterized by comprising a micro-implant anchorage nail, a main arch, an auxiliary arch and a bracket; the bracket is fixed on the dental crown of the upper anterior tooth to be adjusted, the main arch transversely penetrates through the bracket to connect a plurality of brackets on different dental crowns, the left and right micro-implant anchorage pins are respectively arranged on the buccal side between the second anterior molar and the first molar on the left and right sides of the upper jaw, and the two ends of the auxiliary arch are respectively connected with the micro-implant anchorage pins to form the depressing acting force on the upper anterior tooth.

2. The depressed anterior orthodontic appliance of claim 1 wherein the mini implant anchorage nail is provided at the buccal side membrane-gum junction at 45 degrees to the axis of the tooth.

3. The depressed anterior orthodontic appliance of claim 1 wherein the main arch is 0.019 x 0.025 inch square titanium wire or 0.019 x 0.025 inch stainless steel square wire; the auxiliary arch was 0.018 inch Australian wire.

4. The depressed anterior orthodontic appliance of claim 1, wherein the auxiliary arch is bent in a form of an arch 3 to 5mm larger than the maxillary arch, the implant nail is inserted into both sides of the arch, the mark is made 2mm in front of the implant nail, the auxiliary arch is taken out, the rear end of the mark is bent to have a backward inclination of 45 degrees, and the auxiliary arch is inserted again, and when the auxiliary arch is not ligated to the main arch wire, the arch wire is positioned at the bottom of the vestibular furrow in a non-forced rotation state, and the auxiliary arch wire is pulled down and ligated to the main arch wire to apply a force, so that the auxiliary arch wire has a function of depressing the entire anterior tooth toward the gum.

5. The depressed upper anterior orthodontic appliance of claim 1, wherein an auxiliary arch is combined with the implant pin, the force of the auxiliary arch acts directly on the upper anterior tooth and the reaction force counteracts the implant pin; the auxiliary bow is divided into a connecting section, a transition section and a middle section; the two ends of the auxiliary arch are connecting sections which are respectively connected with the micro-implant anchorage nails on the left side and the right side, a section of Australian thread bent from the connecting sections to the dental crown direction forms an arc transition section, the inclined angle of the transition section extending to the dental crown direction is determined according to the shape of the dental alveolus, and the distance between the inclined angle and the mucosal surface is 1mm, so that the gum compression is avoided; the mid-section cooperates with the main arch 2 and bracket 4 to apply a force in a predetermined direction to the crown of the upper front tooth.

6. The depressed anterior orthodontic appliance of claim 1 wherein the micro implant anchorage nail comprises a micro implant anchorage nail head, a micro implant anchorage nail neck and a micro implant anchorage nail thread, the micro implant anchorage nail being 1.5 x 8mm or 1.5 x 10mm in size, the smooth surface of the gum penetrating portion of the micro implant anchorage nail neck having an antimicrobial coating, the micro implant anchorage nail neck being smoothly connected to the micro implant anchorage nail head, the implant nail neck requiring a small hole for insertion of a 0.018 inch australian wire auxiliary arch.

7. The depressed anterior orthodontic appliance of claim 1 wherein the head of the micro implant anchorage screw is a cylindrical structure having one side with an arc at an angle of 45 ° to the long axis of the micro implant anchorage screw, the neck of the micro implant anchorage screw including a gum-penetrating portion, the threaded portion of the micro implant anchorage screw including a cortical bone segment and a cancellous bone segment; the upper 2mm of the screw thread part of the anchorage nail is the cortical bone section, the screw thread interval is 0.15mm, the screw thread depth is 0.2mm, the lower part is the cancellous bone section, the screw thread interval is 0.2mm, the screw thread depth is 0.2mm, and the tip of the micro-implant anchorage nail is provided with a self-tapping cutting edge.

8. The depressed anterior-superior orthodontic appliance of claim 1, wherein the auxiliary arch is engaged with the implant pin such that the force of the auxiliary arch is applied directly to the anterior-superior tooth and is continuously applied with a gentle force in the direction of the long axis of the tooth to effect true depression.

9. The depressed upper anterior orthodontic appliance of claim 1, wherein the auxiliary arch is adapted to exert a depressing action on the anterior molar and the molar by changing a bending form of the auxiliary arch in addition to a depressing action on the anterior tooth, with changing a force application manner.

10. A method for depressing an upper anterior orthodontic corrective, using the depressed upper anterior orthodontic appliance of any one of claims 1 to 9, the method comprising the steps of:

s1, performing correction planning and design according to the tooth state, and determining the size, shape, planting position and gap of the micro-implant anchorage nail to close the traction angle of the arch wire;

s2, transversely penetrating a main arch of a fixing bracket on the dental crown of the upper anterior tooth to be adjusted to connect a plurality of brackets on different dental crowns;

s3, arranging micro-implant anchorage pins at the buccal side and the joint of the membrane and the gum at 45 degrees with the dental axis between the second premolar and the first molar on the left and right sides of the upper jaw respectively;

s4, bending the auxiliary arch into an arch shape 3-5mm larger than the upper jaw arch, marking the front 2mm of the micro-implant anchorage nail after inserting the implant nail at both sides, taking out the auxiliary arch, bending the rear end of the marked part into a backward bending of 45 degrees, and then inserting the auxiliary arch, wherein the arch wire is positioned at the bottom of the vestibular ditch under the state of no force application and rotation when the auxiliary arch wire is not ligated to the main arch wire;

s5, the auxiliary arch wire is pulled down and tied to the main arch wire to apply force, so that the auxiliary arch wire has the function of pressing the whole upper front teeth down towards the gum;

and S6, under the condition that the pressing effect is obvious after a period of time, reducing the backward bending of the auxiliary arch, and applying force to adduct the anterior teeth through the implant nail.

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