阅读说明：本技术 一种用于矫治上颌骨性宽度不调的矫治器 (Appliance for correcting upper jaw bone width irregularity ) 是由 胡敏 贾一凡 毛智 包幸福 张祎 姜欢 魏晓曦 齐慧川 于东升 高尚 李雨桐 于 2020-06-28 设计创作，主要内容包括：本发明公开一种用于矫治上颌骨性宽度不调的矫治器,包括扩弓器、种植钉、定位导板、植入导板和透明牙套,利用定位导板将扩弓器固定在患者上颌上,然后将植入导板与定位导板相连,植入导板确定了种植钉的植入位置,植入种植钉,将定位导板和植入导板取下。在扩弓器固定完成后,将透明牙套佩戴在患者牙齿上,首先按顺序佩戴扩缝牙套,使两颗中切牙之间的缝隙跟随扩开后逐渐远离的左右上颌骨而逐渐增大,然后佩戴关闭牙套,使患者两颗中切牙之间的缝隙逐渐关闭,患者通过佩戴透明牙套,避免了中切牙牙冠的近中移动,中切牙的牙根将在牙龈纤维的牵拉下逐渐聚拢,从而减小后期对中切牙控根移动的需求,缩短治疗疗程,减轻患者痛苦。(The invention discloses a correction device for correcting upper jaw bone width irregularity, which comprises an arch expander, a planting nail, a positioning guide plate, an implantation guide plate and a transparent tooth socket, wherein the arch expander is fixed on the upper jaw of a patient by using the positioning guide plate, then the implantation guide plate is connected with the positioning guide plate, the implantation guide plate determines the implantation position of the planting nail, the planting nail is implanted, and the positioning guide plate and the implantation guide plate are taken down. After the fixed completion of arch expander, wear transparent facing on patient's tooth, wear the expansion joint facing in order at first, make the gap between two middle incisors follow the upper jaw and crescent about keeping away from gradually after expanding, then wear and close the facing, make the gap between two middle incisors of patient close gradually, the patient is through wearing transparent facing, the nearly well removal of middle incisor dental crown has been avoided, the root of a tooth of middle incisor will gather together gradually under the fibrous tractive of gum, thereby reduce the demand that later stage centering incisor accuse root removed, shorten the treatment course, alleviate patient's misery.)

1. The utility model provides a rescue ware for correcting abnormal maxillofacial width which characterized in that: the dental arch expander comprises an arch expander, a planting nail, a positioning guide plate, an implantation guide plate and a transparent tooth socket, wherein the positioning guide plate can be detachably connected with teeth of a patient, and when the positioning guide plate is connected with the teeth of the patient, the positioning guide plate can fix the arch expander on the upper jaw of the patient; the implantation guide plate is detachably connected with the positioning guide plate, when the implantation guide plate is connected with the positioning guide plate, the implantation guide plate can position the implantation position of the implantation nail, and the implantation nail can fix the arch expander on the upper jaw of the patient;

after the arch expander is fixed on the upper jaw of the patient by the planting nail, the transparent tooth socket is sleeved on the teeth of the patient, and the transparent tooth socket is detachably connected with the teeth of the patient; transparent facing is including expanding seam facing and closing the facing, and is a plurality of interval between the incisor in two of expanding seam facing is crescent, utilizes a plurality of expand seam facing can make in two gaps between the incisor follow the upper jaw and the crescent gap of controlling of keeping away from gradually after expanding and be a plurality of interval between the incisor reduces gradually in two of closing the facing utilizes a plurality of close facing can make two gaps between the incisor of patient closed.

2. The appliance of claim 1 for correcting maxillary irregularities in width comprising: the positioning guide plate comprises a fixing portion and a positioning portion which are connected, the fixing portion can be sleeved outside teeth of a patient, the positioning portion protrudes towards the direction far away from the upper jaw of the patient, a cavity between the positioning portion and the upper jaw of the patient can accommodate the arch expander, the positioning portion is provided with a hollow portion, the arch expander is provided with an implanting hole, the implanting hole is located in the hollow portion, and the implanting nail penetrates through the implanting hole and is fixed to the upper jaw of the patient.

3. The appliance of claim 2 for correcting maxillary irregularities in width comprising: the fixing part is connected with the positioning part by a connecting plate, the connecting plate is of a cambered surface structure, and the connecting plate is matched with the upper jaw shape of a patient; the number of the fixing parts is two, and the two fixing parts are symmetrically arranged on two sides of the positioning part.

4. The appliance of claim 2 for correcting maxillary irregularities in width comprising: the number of the implant holes is four, and the four implant holes are distributed in a rectangular shape.

5. The appliance of claim 4 for correcting maxillary irregularities in width comprising: the implantation guide plate is provided with a positioning groove, and when the implantation guide plate is connected with the positioning guide plate, the positioning groove is over against the implantation hole.

6. The appliance of claim 5 for correcting maxillary irregularities in width comprising: the positioning grooves comprise long positioning grooves and short positioning grooves which are arranged in parallel, the openings of the long positioning grooves and the openings of the short positioning grooves are positioned on the same side of the implantation guide plate, and the other ends of the long positioning grooves and the short positioning grooves are opposite to the two implantation holes at two ends of a diagonal line which are distributed in a rectangular shape; the number of the implantation guide plates is two, and the two implantation guide plates are mirror images.

7. The appliance of claim 1 for correcting maxillary irregularities in width comprising: the implantation guide plate can be connected with the positioning guide plate in a clamping mode.

8. The appliance of claim 7 for correcting maxillary irregularities in width comprising: the positioning guide plate is provided with a buckle, the implanting guide plate is provided with a snap ring matched with the buckle, and the snap ring can be connected with the buckle in a clamped mode.

9. The appliance of claim 1 for correcting maxillary irregularities in width comprising: the distance difference between two middle incisors of the adjacent slot expansion tooth socket is 0.5mm, and the distance difference between two middle incisors of the adjacent slot closing tooth socket is 0.2 mm.

10. The appliance of claim 9 for correcting maxillary irregularities in width comprising: the number of the expansion tooth socket is 12, the maximum distance between two middle incisors of the expansion tooth socket is 6mm, and the number of the closed tooth sockets is 30.

Technical Field

The invention relates to the technical field of maxillary width correction devices and peripheral matched equipment thereof, in particular to a correction device for correcting maxillary width imbalance.

Background

Maxillary bone Expansion bow device (MSE) is a novel device for Maxillary bone Expansion bow, the Expansion bow device is fixed by 4 planting nails which vertically penetrate through the double-layer cortical bone of the Maxillary bone, the Expansion bow force is directly transmitted to the Maxillary bone, the palatal centre joint is directly opened, and the bony Expansion bow effect is realized. The bony arch expander widens age limit, has a success rate of expanding arches close to 100% when the palatal medial suture is not closed and a success rate of expanding arches close to 85% when the palatal medial suture is closed, basically avoids the traditional palatal medial suture splitting operation required by the bony arch expander, and greatly reduces trauma.

However, the current clinical use of MSE has the following problems. Firstly, the positioning requirement of the bow expander is high. The expander is required to be placed between the maxillary first molars as close as possible to the palatal vault (maximum clearance to the palatal apical mucosa is less than 1mm) and the implant sites of the two distal implants are as far back as possible in the hard palate. Traditionally, through trying to wear a ring, taking an impression, casting a model, making by hand in a processing plant and other steps, the method is not only tedious and time-consuming, but also increases the possibility of generating errors. Secondly, the precision requirement on the implantation angle of the implantation nail is high. Four planting nails need to vertically enter the hard palate plate, particularly, the planting nails on two sides of the palatal center slit need to be strictly parallel, so that the force of the arch expander can be transmitted to the maxilla on two sides through the planting nails, and the palatal center slit is opened in parallel. However, because the palatal vault has poor operation visual field and limited space, and the hard palatal plate has hard bone and is difficult to implant, the operation of directly implanting the implant nail in the prior art is easy to generate larger angle deviation, so that the arch expansion effect is limited, and even the arch expansion device is damaged. Thirdly, as the first molar at two sides is adopted to manufacture the positioning rod of the arch expander, the tooth-bone mixed supporting type arch expander is formed, not only is the inevitable partial dental arch expansion effect caused, but also the torsion or dislocation of the first molar can not be corrected in the first three months of arch expansion, and the treatment course is prolonged.

Therefore, how to change the current situation that the maxillary expander in the prior art has complicated positioning process, poor positioning accuracy and long correction course when in use becomes a problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a correction device for correcting the upper jaw bone type width imbalance, which solves the problems in the prior art, reduces the positioning difficulty of an upper jaw bone type arch expander, improves the positioning precision of the upper jaw bone type arch expander and shortens the correction treatment course.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a corrector for correcting the upper jaw bone width irregularity, which comprises an arch expander, a planting nail, a positioning guide plate, a planting guide plate and a transparent tooth socket, wherein the positioning guide plate can be detachably connected with teeth of a patient; the implantation guide plate is detachably connected with the positioning guide plate, when the implantation guide plate is connected with the positioning guide plate, the implantation guide plate can position the implantation position of the implantation nail, and the implantation nail can fix the arch expander on the upper jaw of the patient;

after the arch expander is fixed on the upper jaw of the patient by the planting nail, the transparent tooth socket is sleeved on the teeth of the patient, and the transparent tooth socket is detachably connected with the teeth of the patient; transparent facing is including expanding seam facing and closing the facing, and is a plurality of interval between the incisor in two of expanding seam facing is crescent, utilizes a plurality of expand seam facing can make in two gaps between the incisor follow the upper jaw and the crescent gap of controlling of keeping away from gradually after expanding and be a plurality of interval between the incisor reduces gradually in two of closing the facing utilizes a plurality of close facing can make two gaps between the incisor of patient closed.

Preferably, the location baffle includes continuous fixed part and location portion, the fixed part can the suit in patient's tooth outside, location portion orientation is protruding towards the direction of keeping away from patient's upper jaw, the cavity between location portion and the patient upper jaw can hold expand the bow ware, location portion has the fretwork portion, it has the hole of implanting to expand the bow ware, the hole of implanting is located fretwork portion, the planting nail passes the hole of implanting is fixed in patient's upper jaw.

Preferably, the fixing part is connected with the positioning part by a connecting plate, the connecting plate is of a cambered surface structure, and the connecting plate is matched with the upper jaw shape of the patient; the number of the fixing parts is two, and the two fixing parts are symmetrically arranged on two sides of the positioning part.

Preferably, the number of the implantation holes is four, and the four implantation holes are distributed in a rectangular shape.

Preferably, the implantation guide plate is provided with a positioning groove, and when the implantation guide plate is connected with the positioning guide plate, the positioning groove is opposite to the implantation hole.

Preferably, the positioning grooves comprise a long positioning groove and a short positioning groove which are arranged in parallel, the opening of the long positioning groove and the opening of the short positioning groove are positioned on the same side of the implantation guide plate, and the other ends of the long positioning groove and the short positioning groove are opposite to the two implantation holes at two ends of a diagonal line which are distributed in a rectangular shape; the number of the implantation guide plates is two, and the two implantation guide plates are mirror images.

Preferably, the implantation guide plate can be connected with the positioning guide plate in a clamping mode.

Preferably, the positioning guide plate is provided with a buckle, the implantation guide plate is provided with a snap ring matched with the buckle, and the snap ring can be connected with the buckle in a snap-fit mode.

Preferably, the distance difference between two middle incisors of the adjacent dilatation joint tooth socket is 0.5mm, and the distance difference between two middle incisors of the adjacent closing tooth socket is 0.2 mm.

Preferably, the number of the expansion joint tooth socket is 12, the maximum distance between two incisors of the expansion joint tooth socket is 6mm, and the number of the closing tooth sockets is 30.

Compared with the prior art, the invention has the following technical effects: the appliance for correcting the upper maxillary character width disorder comprises an arch expander, an implanting nail, a positioning guide plate, an implanting guide plate and a transparent tooth socket, wherein the positioning guide plate can be detachably connected with teeth of a patient; the implantation guide plate is detachably connected with the positioning guide plate, when the implantation guide plate is connected with the positioning guide plate, the implantation guide plate can position the implantation position of the implantation nail, and the implantation nail can fix the arch expander on the upper jaw of the patient; after the arch expander is fixed on the upper jaw of the patient by the planting nail, the transparent tooth socket is sleeved on the teeth of the patient and is detachably connected with the teeth of the patient; transparent facing is including expanding seam facing and closing the facing, and the interval between the incisor increases gradually in two of a plurality of expansion seam facing, utilizes a plurality of expansion seam facing can make the gap between the incisor follow the upper jaw and the gap that gradually keeps away from about after expanding in two and gradually increases, and the interval between the incisor reduces gradually in two of a plurality of facing of closing, utilizes a plurality of facing of closing can make the gap closure between the incisor in two of patient. When the appliance for correcting the upper maxillary character width imbalance works, the positioning guide plate is utilized to fix the arch expander on the upper jaw of the patient, the positioning guide plate is fixed on the teeth of the patient, then the implantation guide plate is connected with the positioning guide plate, at the moment, the implantation guide plate determines the implantation position of the implantation nail, the implantation nail is implanted, the arch expander is fixed on the upper jaw of the patient, and the positioning guide plate and the implantation guide plate are taken down, so that the positioning and the fixing of the arch expander are completed. After the fixed completion of arch expander, wear transparent facing on patient's tooth, transparent facing is including expanding seam facing and closing the facing, at first wear the expansion seam facing in order, make the gap between two middle incisors follow the upper jaw and crescent about keeping away from gradually after expanding, then wear and close the facing, make the gap between two middle incisors of patient close gradually, the patient is through wearing transparent facing, the nearly well removal of middle incisor crown has been avoided, the root of a tooth of middle incisor will gather together gradually under the fibrous tractive of gum, thereby reduce the demand that the later stage centering incisor root control removed, shorten the treatment course, alleviate patient's misery.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic diagram of the operation of the appliance for correcting maxillary disharmony of width of the present invention;

FIG. 2 is a schematic structural view of an arch expander of the appliance for correcting maxillary disharmony of width according to the present invention;

FIG. 3 is a schematic cross-sectional view of a positioning guide of the appliance for correcting maxillary disharmony of width in accordance with the present invention;

FIG. 4 is a schematic top view of a positioning guide of the appliance for correcting maxillary disharmony of width according to the present invention;

FIG. 5 is a schematic cross-sectional view of an implant guide of the appliance for correcting maxillary dyssynchrony;

FIG. 6 is a schematic top view of an implant guide of the appliance for correcting maxillary dyssynchrony;

FIG. 7 is a top view of another implant guide of the appliance for the treatment of maxillary dyssynchrony;

wherein, 1 is the ware of expanding the bow, 101 is implanting the hole, 2 is planting the nail, 3 is the location baffle, 301 is the fixed part, 302 is location portion, 303 is the fretwork portion, 304 is the connecting plate, 305 is the buckle, 4 is implanting the baffle, 401 is the constant head tank, 402 is the snap ring, 5 is patient's upper jaw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

The invention aims to provide a correction device for correcting the upper jaw bone type width imbalance, which solves the problems in the prior art, reduces the positioning difficulty of an upper jaw bone type arch expander, improves the positioning precision of the upper jaw bone type arch expander and shortens the correction treatment course.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1 to 7, fig. 1 is a schematic diagram of an appliance for correcting an irregular maxillary width according to the present invention, fig. 2 is a schematic diagram of a structure of an arch expander of an appliance for correcting an irregular maxillary width according to the present invention, fig. 3 is a schematic diagram of a cross section of a positioning guide plate of an appliance for correcting an irregular maxillary width according to the present invention, fig. 4 is a schematic diagram of a top view of a positioning guide plate of an appliance for correcting an irregular maxillary width according to the present invention, fig. 5 is a schematic diagram of a cross section of an implantation guide plate of an appliance for correcting an irregular maxillary width according to the present invention, fig. 6 is a schematic diagram of a top view of an implantation guide plate of an appliance for correcting an irregular maxillary width according to the present invention, and fig. 7 is a schematic diagram of another implantation guide plate of an appliance for correcting an irregular maxillary width according to the present invention.

The invention provides a corrector for correcting the upper jaw bone width disorder, which comprises an arch expander 1, an implanting nail 2, a positioning guide plate 3, an implanting guide plate 4 and a transparent tooth socket, wherein the positioning guide plate 3 can be detachably connected with teeth of a patient, and when the positioning guide plate 3 is connected with the teeth of the patient, the positioning guide plate 3 can fix the arch expander 1 on the upper jaw 5 of the patient; implant baffle 4 and 3 detachable connections of location baffle, implant baffle 4 and location baffle 3 when linking to each other, implant baffle 4 and can fix a position the implantation position of planting nail 2, plant nail 2 and can fix expansion bow ware 1 on patient's upper jaw 5.

After the arch expander 1 is fixed on the upper jaw 5 of the patient by the planting nail 2, the transparent tooth socket is sleeved on the teeth of the patient, and the transparent tooth socket is detachably connected with the teeth of the patient; transparent facing is including expanding seam facing and closing the facing, and the interval between the incisor increases gradually in two of a plurality of expanding seam facing, utilizes a plurality of expanding seam facing to make the gap between two central incisor follow the upper jaw bone and the gap that gradually keeps away from about after expanding, and the interval between the incisor reduces gradually in two of a plurality of facing of closing, utilizes a plurality of facing of closing can make the gap closure between two central incisor of patient.

When the appliance for correcting the upper maxillary character width imbalance works, the positioning guide plate 3 is utilized to fix the arch expander 1 on the upper jaw 5 of a patient, the positioning guide plate 3 is fixed on the teeth of the patient, then the implantation guide plate 4 is connected with the positioning guide plate 3, at the moment, the implantation guide plate 4 determines the implantation position of the implantation nail 2, the implantation nail 2 is implanted, the arch expander 1 is fixed on the upper jaw 5 of the patient, and the positioning guide plate 3 and the implantation guide plate 4 are taken down, so that the positioning and the fixing of the arch expander 1 are completed. After 1 fixed the completion of expanding bow ware, wear transparent facing on patient's tooth, transparent facing is including expanding seam facing and closing the facing, at first, wear the expansion seam facing in order, make the gap between two middle incisors follow the upper jaw and crescent about keeping away from gradually after expanding, then wear and close the facing, make the gap between two middle incisors of patient close gradually, the patient is through wearing transparent facing, the nearly middle removal of middle incisor crown has been avoided, the root of a tooth of middle incisor will gather together gradually under the fibrous tractive of gum, thereby reduce the demand that the later stage centering incisor root control removed, shorten the treatment course, alleviate patient's misery. It should be noted here that the arch expander 1 is well known to those skilled in the art, and therefore, the specific structure of the arch expander 1 is not described herein.

Wherein, location baffle 3 is including the fixed part 301 and the location portion 302 that link to each other, fixed part 301 can the suit in patient's tooth outside, play the effect of fixed position baffle 3, location portion 302 is protruding towards the direction of keeping away from patient upper jaw 5, the cavity between location portion 302 and patient upper jaw 5 can hold and expand bow ware 1, location portion 302 can confirm the fixed position that expands bow ware 1, location portion 302 has fretwork portion 303, it has implantation hole 101 to expand bow ware 1, implantation hole 101 is located fretwork portion 303, it fixes at patient upper jaw 5 to plant nail 2 through implanting hole 101, location portion 302 sets up fretwork portion 303, when fixed arch ware 1 position that expands, avoid location portion 302 to influence the implantation of planting nail 2.

In the present embodiment, the fixing portion 301 is connected to the positioning portion 302 by a connecting plate 304, the connecting plate 304 is of an arc structure, the connecting plate 304 is matched with the shape of the upper jaw 5 of the patient, and the connecting plate 304 fits the upper jaw 5 of the patient as much as possible, so as to reduce the discomfort of the patient; the number of the fixing portions 301 is two, and the two fixing portions 301 are symmetrically arranged at two sides of the positioning portion 302, so that the positioning accuracy is improved. In addition, in the present embodiment, the fixing portion 301 is fitted over the first molar, the first premolar and the second premolar to improve the stability of the connection of the positioning guide 3 to the patient's teeth.

Specifically, implant hole 101 is four, and four implant holes 101 are the rectangle and distribute, and when carrying out the positioning of expanding bow ware 1, four implant holes 101 all are located fretwork portion 303, make things convenient for planting nail 2 to implant.

More specifically, implant baffle 4 and have constant head tank 401, and implant baffle 4 and location baffle 3 when linking to each other, constant head tank 401 is just planting hole 101, and after location baffle 3 fixed bow extender 1, will implant baffle 4 and link to each other with location baffle 3, and constant head tank 401 is just planting hole 101, along constant head tank 401 implantation nail 2, improves implantation nail 2 and implants the precision. It should be noted here that, the portion of implanting the baffle 4 and setting up the constant head tank 401, thickness is thicker, and the constant head tank 401 forms the location passageway in vertical direction to vertical direction produces crooked when avoiding planting the nail 2 and implants, improves positioning accuracy, but must use and not influence planting the nail 2 and implant as the prerequisite.

In other specific embodiments of the present invention, the positioning groove 401 includes a long positioning groove and a short positioning groove which are arranged in parallel, the opening of the long positioning groove and the opening of the short positioning groove are located on the same side of the implantation guide plate 4, and the other end of the long positioning groove and the other end of the short positioning groove are opposite to the two implantation holes 101 at the two ends of the diagonal line which are distributed in a rectangular shape, that is, the implantation guide plate 4 can position the implantation nails 2 at the two ends of the diagonal line of the rectangular shape, and implant the two implantation nails 2 at the diagonal line, so as to improve the stress uniformity of the expander 1; implant the quantity of baffle 4 and be two, two implant the baffle 4 and each other be the mirror image, implant, after implanting two planting nails 2 that are the diagonal, pull down and implant baffle 4, trade another piece and implant baffle 4, implant two planting nails 2 of another diagonal, accomplish and expand bow ware 1 and fix.

For the ease of dismouting, implant baffle 4 can link to each other with 3 joints of location baffle, and the dismouting makes things convenient for medical personnel to operate is connected to the joint.

Further, the positioning guide plate 3 is provided with a buckle 305, the implantation guide plate 4 is provided with a snap ring 402 matched with the buckle 305, the snap ring 402 can be connected with the buckle 305 in a clamped mode, the snap ring 402 can be used for quickly disassembling and assembling the implantation guide plate 4 and the positioning guide plate 3, and the working efficiency is improved.

It is also emphasized that the difference in spacing between the two central incisors of adjacent dilating sleeves is 0.5mm and the difference in spacing between the two central incisors of adjacent closing sleeves is 0.2 mm. The difference in gap between two incisors of adjacent dilating braces is 0.5mm and the difference in gap between two incisors of adjacent closing braces is 0.2mm, which is given here only depending on the patient.

In the embodiment, the number of the expansion tooth socket is 12, the maximum distance between two incisors of the expansion tooth socket is 6mm, and the number of the closing tooth socket is 30. When the incisors in the patient begin to have gaps (about 2 weeks), the first dilatation socket is worn and replaced every 5 days. The gap between the middle incisor teeth of the later expansion joint facing is increased by 0.5mm compared with the gap between the middle incisor teeth of the former expansion joint facing, and the gap between the middle incisor teeth of the 12 th expansion joint facing (2 months) reaches 6mm, so that the clinical requirement can be basically met. Then the closing of the interproximal spaces is started again, the interproximal space of each closed facing is 0.2mm smaller than the interproximal space of the previous closed facing, and 30 closed facing are used in total. Because the gap is designed on the dilatation sleeve to avoid the mesial movement of the dental crowns of the middle incisors, the dental roots of the middle incisors gradually gather under the traction of the gingival fibers, thereby reducing the requirement of moving the control roots of the middle incisors in the later period, relieving the pain of patients and shortening the treatment course.

The appliance for correcting the upper jaw bone irregular width is provided with the positioning guide plate 3 and the implanting guide plate 4 which are matched with each other to position the implanting positions of the arch expander 1 and the implanting nail 2, so that the positioning difficulty of the arch expander 1 is reduced, the positioning accuracy is improved, the accurate positioning can ensure that the arch expander 1 cannot be displaced or deformed due to the angle formed between the implanting nails 2 when arch expanding force is applied, the arch expanding force is close to the maximum resistance position of each bone seam as much as possible, left and right bone blocks of a maxilla are stressed in the same plane, the directions are opposite, the sizes are consistent, and therefore the palatal suture is opened in parallel. After 1 fixed the completion of expanding bow ware, wear transparent facing on patient's tooth, transparent facing is including expanding seam facing and closing the facing, at first, wear the expansion seam facing in order, make the gap between two middle incisors follow the upper jaw and crescent about keeping away from gradually after expanding, then wear and close the facing, make the gap between two middle incisors of patient close gradually, the patient is through wearing transparent facing, the nearly middle removal of middle incisor crown has been avoided, the root of a tooth of middle incisor will gather together gradually under the fibrous tractive of gum, thereby reduce the demand that the later stage centering incisor root control removed, shorten the treatment course, alleviate patient's misery.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.