CN113057746A - Invisible tooth socket and invisible orthodontic maxillary anterior traction system with same - Google Patents

Abstract

The invention provides an invisible orthodontic upper jaw front traction system which comprises an invisible tooth socket, an intraoral traction device, a front traction force-applying device and an upper jaw front traction device, wherein two bag-shaped structures are arranged on the buccal side of the invisible tooth socket at intervals; the intraoral traction device comprises a connecting piece, two reinforcing blocks and two connecting nuts, wherein one end of each reinforcing block is connected with a connecting rod, the two reinforcing blocks are detachably spliced with two bag-shaped structures through bag openings respectively, the connecting rods penetrate through avoidance holes, one ends of the two connecting nuts are in threaded connection with the two connecting rods respectively, and the other ends of the two connecting nuts are connected with the connecting piece; the front traction force-applying device is connected with the upper jaw front tractor and the connecting piece. Which can combine the maxillary anterior retractor and the invisible tooth socket together to realize the traction.

Description

Invisible tooth socket and invisible orthodontic maxillary anterior traction system with same

Technical Field

The invention relates to the field of tooth correction, in particular to an invisible tooth socket and an invisible correction upper jaw front traction system with the same.

Background

Compared with the traditional fixed correction technology, the bracket-free invisible correction technology has the advantages that the correction device is formed by processing medical resin films, and correction devices such as belt rings, brackets, arch wires and the like for fixing the correction device are omitted, so that the bracket-free invisible correction technology is called as a bracket-free technology; the orthodontic appliance processed by the transparent resin film is worn in the mouth and is not easy to be discovered, so the orthodontic appliance is called as invisible, the bracket-free invisible orthodontic appliance achieves the aim of orthodontic tooth through continuous small-range tooth movement, and compared with the traditional orthodontic appliance, the bracket-free invisible orthodontic appliance has the advantages of attractive appearance, comfort, contribution to oral hygiene maintenance and the like.

However, for functional correction of early malocclusion in adolescents, for example: teenagers' upper jaw is not enough, and the function of the III class malocclusion deformity that the mandible slightly grows excessively is rescued, compares and rescues the mode that the ware can adopt upper jaw place ahead tractor to assist in correcting in the tradition, relies on alone to have hidden the ware of rescuring in the groove to reach and correct the target. Receive the restriction that does not have the stealthy ware forming process of rescuring in support groove, hardly with the stealthy system of rescuring in support groove of the direct introduction of oral force, be difficult to carry out organic combination with the stealthy ware of rescuring in support groove with upper jaw front tractor, at present, the stealthy combination mode of rescuring the ware of upper jaw front tractor and no support groove mainly has following several:

(1) some incisions are made at the edge of the invisible appliance to form a shape capable of being hooked, and a rubber band connected with a tractor in front of the upper jaw is directly hung on the incisions to achieve the traction effect. However, in the method, the continuity of the edge of the invisible appliance is damaged, so that the area of the invisible appliance wrapping the teeth is reduced, and the correction effect is indirectly influenced; meanwhile, the edge of the incision is tilted due to the direct action of the rubber band on the incision, so that the invisible appliance is deformed to influence the correction effect, and the oral mucosa of a patient is easily damaged.

(2) An incision capable of accommodating the traction piece is cut at the edge of the invisible appliance, so that the traction piece can be conveniently pasted on the teeth and is not contacted with the invisible appliance, but the mode can reduce the integral wrapping property of the invisible appliance on the teeth, and the correction effect is indirectly influenced; meanwhile, the traction piece is stuck on the tooth surface and is not contacted with the invisible orthodontic appliance, so that the action site is the tooth where the traction piece is located instead of the whole dentition, and the traction piece can possibly cause unexpected direction movement on the tooth.

(3) Installing a traction hook or a traction protrusion on the invisible appliance, for example, sticking the traction hook or the traction protrusion on the surface of the invisible appliance, and directly hanging a rubber band connected with a tractor in front of the upper jaw on the traction hook or the traction protrusion, wherein the method is to stick the traction hook or the traction protrusion on the invisible appliance by using a chemical bonding or hot melting mode; some have designed the towing hook in two parts by making a hole in the invisible appliance and snap the two parts of the towing hook together after passing the towing hook through the hole in the invisible appliance. For example, the chinese patent application CN111297495A discloses a traction hook added beside a bracket-free invisible appliance chair, which comprises a traction part and a connection part, wherein during assembly, a hole is drilled on the bracket-free appliance by using a mechanic pliers, and during assembly, a connection column of the connection part is made to pass through the hole drilled on the bracket-free appliance, so that the connection column and the connection hole on the traction part are in interference fit.

However, the following problems still exist in the practical application of the traction mode:

a, punching holes at the traction position of the bracket-free orthodontic appliance can damage the integrity of the bracket-free invisible orthodontic appliance, influence the coating effect of the bracket-free invisible orthodontic appliance on teeth and cause the limited movement of the teeth at the traction position;

b, the traction hook is of a split structure, but because the traction hook is made of the same material as the bracket-free invisible appliance, when the traction hook is subjected to a larger external force, the traction part and the connecting part are easy to deform and separate, and the bracket-free invisible appliance cannot be pulled, so that the larger external force cannot be applied to the bracket-free invisible appliance through a front tractor, and the correction effect is poor;

c, the inner connecting sheet adopts a sheet closely attached to the orthodontic appliance, but the traction part can deform after being stressed, so that the inner connecting sheet cannot well transfer the external force applied to the stressed column to the whole bracket-free orthodontic appliance, and the effect is weakened due to overlarge stress; in addition, for the prerequisite of realizing protecting as far as possible the ware is rescued, reduce the influence of punching the hole to the ware is rescued to no support groove, the aperture of its hole of punching should minimize, the spliced pole that leads to connecting portion and the contact surface of ware is rescued to no support groove are less, and pull through having the columnar hook that pulls, and the slope takes place for the easy atress of its spliced pole, can act on after the spliced pole slope on the ware is rescued to no support groove, cause harmful effects to other teeth easily.

d, hanging the rubber band on the traction hook or the traction protrusion, and because the stress column is rod-shaped, the stress column can not position the force application direction of the tractor in front of the upper jaw, and the force application direction of the traction force outside the mouth is difficult to accurately control.

In addition, among the prior art, for reducing intraoral foreign body sensation, adopt the rubber band to connect upper jaw place ahead tractor and intraoral device usually, however, the rubber band is the rubber material, and easy fatigue is ageing during the use, can't apply the extraoral traction force that lasts, leads to on average every patient to correct whole journey will use several hundreds of rubber bands to vary, and needs often to change, not only extravagant material, increased the amount of labour and time cost for doctor and patient moreover.

Disclosure of Invention

The present invention is directed to solve at least one of the problems of the related art, and provides an invisible anterior maxillary distraction system, which can combine an anterior maxillary distractor with an invisible tooth socket to achieve distraction.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

an invisible orthodontic upper jaw front traction system comprises an invisible tooth socket, an intraoral traction device, a front traction and force-applying device and an upper jaw front traction device, wherein two bag-shaped structures are arranged on the upper jaw buccal side of the invisible tooth socket at intervals, each bag-shaped structure is arranged in a cuspid tooth area and/or a first front tooth grinding area, an accommodating cavity and a avoiding hole are arranged in each bag-shaped structure, the accommodating cavity penetrates through one end, facing the upper jaw tooth grinding teeth, of each bag-shaped structure to form a bag opening, the avoiding hole penetrates through one end, opposite to the bag opening, of each bag-shaped structure, and the avoiding hole is communicated with the accommodating; the intraoral traction device comprises a connecting piece, two reinforcing blocks and two connecting nuts, wherein one end of each reinforcing block is connected with a connecting rod with an external thread, the two reinforcing blocks are detachably inserted with accommodating cavities of two bag-shaped structures through bag openings respectively, the connecting rod penetrates through an avoiding hole corresponding to the bag-shaped structures, one ends of the two connecting nuts are respectively in threaded connection with the connecting rods of the two reinforcing blocks, and the other ends of the two connecting nuts are connected with the connecting piece; the front traction force-applying device connects the upper jaw front tractor and the connecting piece together to realize traction.

Furthermore, the connecting piece is a lip bow, the two opposite ends of the lip bow are both provided with external threads, and the lip bow is in threaded connection with the two connecting nuts through the external threads at the two opposite ends.

Furthermore, a U-shaped curve is bent between the upper jaw cusp tooth area and the side incisor area by the labial arch, and a labial stopper is arranged between the middle incisor area and the side incisor area; the joint of the front traction force-applying device and the labial arch is positioned between the U-shaped bend and the connecting nut.

Furthermore, the connecting piece comprises two traction rings, each traction ring comprises a rod body and a connecting ring connected with one end of the rod body, the rod bodies of the two traction rings are provided with external threads which are respectively in threaded connection with the two connecting nuts, or the other ends of the rod bodies of the two traction rings are respectively fixedly connected with the two connecting nuts; the front traction force-applying device is connected with the connecting ring.

Furthermore, the buccal side and the lingual side of the first molar area of the invisible tooth socket are both provided with belt-shaped retention vacuoles, and the lingual side of the double-cuspid tooth area of the invisible tooth socket is provided with double-cuspid tooth retention vacuoles.

Furthermore, the bag-shaped structure is a hollow quadrangular structure and comprises two bottom plates, an end plate and two opposite inclined plates which are oppositely arranged in parallel, the bottom plates are in an isosceles trapezoid shape, the end plates and the inclined plates are both rectangular, the end plates are connected to the upper bottom edge of the bottom plates, the two inclined plates are obliquely arranged and respectively connected to two inclined edges of the bottom plates, the end plates and the inclined plates jointly enclose the accommodating cavity, and one end of the bottom plate, which is far away from the end plates, and one end of the inclined plates, which is far away from the end plates, jointly enclose the; the avoiding hole is communicated with the end plate; one of the base plates is fixedly adhered to the buccal side of the invisible braces;

the boss is for the four prismatic structures with bag structure grafting complex, bottom surface including two parallel relative settings, two parallel relative terminal surfaces and two relative inclined planes, the bottom surface is isosceles trapezoid shape, terminal surface and inclined plane all are the rectangle, and wherein a terminal surface is connected in the lower base department of bottom surface, another terminal surface is connected in the last base department of bottom surface, two inclined planes slope sets up and connects respectively in two hypotenuses departments of bottom surface, the one end of connecting rod is pre-buried in the less one end of boss cross section, the boss is pegged graft when acceping the chamber, the less terminal surface of boss cross section can offset with the end plate inner wall, two inclined planes can respectively with the inner wall parallel contact of two swash plates.

Furthermore, the hole wall which encloses the accommodating cavity is provided with a first inclined part so that the cross-sectional area of the accommodating cavity is gradually reduced towards the direction away from the bag opening; the reinforcing block has a second inclined portion capable of being in parallel contact with the first inclined portion.

Furthermore, the bag-shaped structure and the reinforcing block are both made of resin, the reinforcing block comprises a body and a buffer part which are connected with each other, the body is made of hard resin, the buffer part is made of soft lining resin, the buffer part is positioned at one end of the reinforcing block inserted in the accommodating cavity, and the buffer part can elastically abut against the bag-shaped structure; one end of the connecting rod penetrates through the buffering part and extends into the body.

The invention also provides the invisible tooth socket, wherein two bag-shaped structures are arranged on the buccal side of the invisible tooth socket at intervals, each bag-shaped structure is arranged in the cuspid tooth area and/or the first anterior molar area, each bag-shaped structure is internally provided with an accommodating cavity and a spacing hole, the accommodating cavity penetrates through one end, facing the upper jaw molar tooth, of the bag-shaped structure to form a bag opening, the spacing hole penetrates through one end, opposite to the bag opening, of the bag-shaped structure, and the spacing hole is communicated with the accommodating cavity.

The buccal side of the outer invisible tooth socket is bulged towards the buccal side to form an outer layer vacuole, the outer layer vacuole and the inner layer invisible tooth socket jointly enclose a bag-shaped structure with an accommodating cavity, and the accommodating cavity penetrates through one end, facing the upper molar, of the outer layer vacuole to form a bag opening; the avoiding hole is communicated with one end of the outer layer vacuole relative to the bag opening.

Furthermore, the front traction force-applying device comprises a spring, a force-applying hanging ring, a buckle and a metal wire ring, wherein the force-applying hanging ring and the buckle are respectively connected to two opposite ends of the spring, the force-applying hanging ring is hung on the upper jaw front tractor, and the metal wire ring is connected with the connecting piece and detachably connected with the spring through the buckle.

Due to the adoption of the technical scheme, the invention has the following beneficial effects:

above-mentioned upper jaw front traction system is rescued in stealthy, its stealthy facing is equipped with and is used for realizing the bag-shaped structure of pulling with upper jaw front tractor, can combine upper jaw front tractor and stealthy facing together to realize pulling. When correcting, the extraoral traction force sequentially passes through the connecting piece, the connecting rod and the reinforcing block and is transmitted to the bag-shaped structure, the bag-shaped structure is fixedly connected with the invisible braces to transmit the extraoral traction force, and the invisible braces act on periodontal and maxillary bone through the correction force of the deformation of the invisible braces, so that the tooth correction and the function correction of early-stage maxillary bone of teenagers are achieved.

Drawings

Fig. 1 is a schematic structural view of an invisible facing, an intraoral traction device and a forward traction force-applying device in an invisible orthodontic maxillary forward traction system according to a first embodiment of the invention.

Fig. 2 is an enlarged view of a part of the structure in fig. 1.

Fig. 3 is an enlarged view of fig. 2 at a.

Fig. 4 is a perspective view of the first embodiment of the present invention, illustrating the bag-shaped structure and the reinforcing block inserted together.

Fig. 5 is a schematic perspective view of the bag-shaped structure and the reinforcing block in a separated state according to the first embodiment of the present invention.

Figure 6 is a schematic top view of an invisible mouthpiece and a pocket structure showing only the first molars and bicuspids on the left side encased in the invisible mouthpiece according to an embodiment of the present invention.

Fig. 7 is a perspective view of a coupling nut according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a wire loop in an embodiment of the invention.

Fig. 9 is a schematic cross-sectional structure of the wire loop in fig. 8.

Fig. 10 is a connection structure view of the connector, the wire loop, and the clip according to the embodiment of the present invention.

FIG. 11 is a connection structure view of a spring, a force applying hanging ring and a buckle in the embodiment of the invention.

FIG. 12 is a connection structure view of a spring, a force applying hanging ring and a buckle according to another embodiment of the present invention.

FIG. 13 is a block diagram of the anterior maxillary retractor of the embodiment of the present invention.

Fig. 14 is a schematic structural view of an invisible tooth socket, an intraoral traction device and a forward traction force-applying device in the invisible orthodontic maxillary forward traction system according to the second embodiment of the invention.

Fig. 15 is a structural view of the pull ring of fig. 14.

Fig. 16 is a block diagram of a traction ring according to another embodiment of the present invention.

FIG. 17 is a schematic top view of a third embodiment of a contact shell according to the present invention.

Fig. 18 is an enlarged view of fig. 17 at B.

Description of the main elements

2. Invisible tooth sockets; 21. a bag-shaped structure; 210. a bag opening; 211. an accommodating cavity; 212. avoiding holes; 213. a base plate; 214. an end plate; 215. a sloping plate; 23. with an annular retention void; 25. double-cuspid tooth retention vacuole; 26. an inner layer invisible tooth socket; 27. an outer layer invisible tooth socket; 28. outer layer vacuole; 3. an intraoral traction device; 31. a connecting member; 312. u koji; 313. a lip block; 30. a traction ring; 301. a rod body; 303. a connecting ring; 32. a reinforcing block; 321. a bottom surface; 322. an end face; 323. a bevel; 325. a body; 326. a buffer section; 33. a connecting rod; 331. a bending section; 34. a connecting nut; 341. a threaded hole; 4. a front traction force-applying device; 41. a spring; 411. hooking; 42. a stress application hanging ring; 43. buckling; 421. 431 and hanging holes; 44. a wire loop; 441. a metal wire; 443. a flexible layer; 46. a notch; 5. a maxillary anterior distractor; 51. a support; 52. positioning blocks; 53. a horizontal force application rod; 54. a forehead pad; 55. a chin pocket; 56. a limit nut; 100. an intraoral retention accessory for bruxism; 200. an intra-oral retention accessory for double-cuspid teeth; 300. a first molar; 400. first premolar.

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.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 13, a first embodiment of the invention provides an invisible orthodontic anterior maxillary traction system, which includes an invisible facing 2, an intraoral traction device 3, an anterior traction and force-applying device 4 and an anterior maxillary tractor 5.

Referring to fig. 6, the invisible braces 2 are maxillary invisible braces, and the structure of the invisible braces 2 is substantially the same as that of the prior art, except that in the present embodiment, the invisible braces 2 are provided with a bag-shaped structure 21, a band-shaped retention cavity 23 and a bicuspid retention cavity 25. The pocket 21 is attached to the maxillary buccal side of the contact shell 2. Referring to fig. 4 and 5, two pocket-shaped structures 21 are disposed on the maxillary buccal side of the invisible mouthpiece 2 at intervals, the pocket-shaped structures 21 extend from the canine tooth area to the first premolar tooth area, each pocket-shaped structure 21 is provided with a receiving cavity 211 and a clearance hole 212, the receiving cavity 211 penetrates through one end of the pocket-shaped structure 21 facing the maxillary molar tooth to form a pocket opening 210, the clearance hole 212 penetrates through one end of the pocket-shaped structure 21 opposite to the pocket opening 210, the clearance hole 212 is communicated with the receiving cavity 211, and the diameter of the clearance hole 212 is smaller than that of the receiving cavity 211.

In the present embodiment, the bag-shaped structure 21 is a hollow block body with a quadrangular prism structure, the accommodating cavity 211 is a quadrangular prism cavity with a substantially same geometric shape as the bag-shaped structure 21, specifically, the bag-shaped structure 21 includes two bottom plates 213, an end plate 214 and two opposite sloping plates 215, which are oppositely disposed in parallel, the bottom plate 213 is in an isosceles trapezoid shape, the end plate 214 and the sloping plates 215 are both rectangular, the end plate 214 is connected to the upper bottom edge of the bottom plate 213, and the two sloping plates 215 are obliquely disposed and respectively connected to two sloping edges of the bottom plate 213; the bottom plate 213, the end plate 214 and the inclined plate 215 jointly enclose a containing cavity 211, and one end of the bottom plate 213, which is far away from the end plate 214, and one end of the inclined plate 215, which is far away from the end plate 214, jointly enclose a bag opening 210; the clearance hole 212 is formed through the end plate 214. The two sloping plates 215 are obliquely arranged, so that the cross section of the accommodating cavity 211 is gradually reduced towards the direction away from the bag opening 210, and the bag-shaped structure 21 is in a quadrangular structure with one large end and one small end.

Preferably, the length of the bag-shaped structure 21 is about 5-15mm, the mouth 210 of the receiving cavity 211 is rectangular about 8 × 6mm, the end with a smaller cross section in the receiving cavity 211 is rectangular about 5 × 3.5mm, and the thicknesses of the end plate 214, the sloping plate 215 and the bottom plate 213 are all about 1mm, so that when the bag-shaped structure 21 is fixedly adhered to the invisible mouthpiece 2, a large feeling of foreign matter is not generated. The bag-shaped structure 21 is made of resin materials, preferably, the bag-shaped structure 21 and the invisible mouthpiece 2 are made of the same materials, and the bag-shaped structure 21 and the invisible mouthpiece 2 are chemically and fixedly bonded by the same resin materials as the invisible mouthpiece 2. The clearance hole 212 is formed to penetrate substantially the center of the end plate 214, and the diameter of the clearance hole 212 is preferably about 1 mm.

The annular retention vacuole 23 is convexly arranged on the buccal side and the lingual side of the first molar region of the upper jaw of the invisible dental mouthpiece 2, the annular retention vacuole 23 is in a long strip shape, and the length direction of the annular retention vacuole is parallel to the length direction of the first molar region. The band ring-shaped retention vacuole 23 is used in cooperation with the molar intraoral retention accessory 100, the shape of the molar intraoral retention accessory 100 is matched with the band ring-shaped retention vacuole 23, and the molar intraoral retention accessory 100 is fixed on the buccal side and the lingual side of the first molar 300 and is respectively embedded with the band ring-shaped retention vacuole 23 on the buccal side and the lingual side of the first molar region of the invisible dental cast 2. The double-cuspid tooth fixing vacuole 25 is convexly arranged on the tongue side of the upper double-cuspid tooth area (namely, the first anterior molar area) of the invisible dental mouthpiece 2, the double-cuspid tooth fixing vacuole 25 is in a cuboid shape, and the length direction of the double-cuspid tooth fixing vacuole 25 is parallel to the height direction of the double-cuspid teeth. The bicuspid retention vacuole 25 is used in cooperation with the bicuspid intraoral retention attachment 200 fixed to the lingual side of the first premolar 400, and the bicuspid intraoral retention attachment 200 is shaped to match the bicuspid retention vacuole 25 and is fitted into the bicuspid retention vacuole 25. The intraoral retention fixture 100 for molar and the intraoral retention fixture 200 for double-tipped teeth can be made of photo-curable nanocomposite resin (methacrylate monomer as a main component), which belongs to the prior art and is not described herein for brevity.

Referring to fig. 2, fig. 3, fig. 4 and fig. 5, the intraoral traction device 3 includes a connecting member 31, two reinforcing blocks 32 and two connecting nuts 34. One end of each reinforcing block 32 is connected with a connecting rod 33 with an external thread, the two reinforcing blocks 32 are respectively detachably inserted into the accommodating cavities 211 of the two bag-shaped structures 21 through the bag openings 210, and the connecting rod 33 penetrates through the avoiding hole 212 corresponding to the bag-shaped structure 21; one ends of the two connecting nuts 34 are respectively in threaded connection with the connecting rods 33 of the two reinforcing blocks 32, and the other ends of the two connecting nuts 34 are both in threaded connection with the connecting piece 31; the anterior traction and force application device 4 connects the anterior maxillary retractor 5 with the connecting piece 31 to realize traction.

In the present embodiment, the reinforcing block 32 is a quadrangular prism structure inserted into the bag-shaped structure 21, and includes two bottom surfaces 321, two end surfaces 322, and two opposite inclined surfaces 323, where the bottom surfaces 321 are in an isosceles trapezoid shape, the end surfaces 322 and the inclined surfaces 323 are both in a rectangular shape, one of the end surfaces 322 is connected to a lower bottom edge of the bottom surface 321, the other end surface 322 is connected to an upper bottom edge of the bottom plate 213, and the two inclined surfaces 323 are obliquely arranged and respectively connected to two oblique edges of the bottom surface 321. Because the two inclined surfaces 323 are obliquely arranged, the reinforcing block 32 is formed into a quadrangular prism structure with one large end and one small end. In the present embodiment, one end of the connecting rod 33 is pre-buried in the end of the reinforcing block 32 having a smaller cross section, and the connecting rod 33 is preferably made of stainless steel wire having a diameter of about 0.9mm to serve as a resistance against deformation when being pulled. The end of the reinforcing block 32 with the smaller cross section is inserted into the receiving cavity 211 through the bag opening 210, and when the reinforcing block 32 is inserted into the receiving cavity 211, the connecting rod 33 extends out of the bag-shaped structure 21 through the clearance hole 212, preferably, the connecting rod 33 is threaded out of the end plate 214 by about 2.5 mm; the two inclined surfaces 323 can be in parallel contact with the inner walls of the two sloping plates 215, respectively, and the end surface 322 of the reinforcing block 32 with the smaller cross section can be in contact with the inner wall of the end plate 214 of the bag-shaped structure 21. In the present embodiment, the reinforcing block 32 includes a body 325 and a buffer 326 connected to each other, the body 325 is made of a hard resin, for example, thermosetting resin (polymethyl methacrylate) at one end of the reinforcing block 32 having a larger cross section; the buffer 326 is made of soft lining resin, such as soft plastic of methyl acrylate, silicon rubber, etc., and has a hardness smaller than that of the body 325, the buffer 326 is located at the end of the reinforcing block 32 with the smaller cross section, and the buffer 326 can elastically abut against the inner wall of the end plate 214 with the smaller cross section in the bag-shaped structure 21. Preferably, the buffer 326 and the body 325 are bonded by chemical bonding, the length of the buffer 326 is about 1/3 of the total length of the reinforcing block 32, the length of the body 325 is about 2/3 of the total length of the reinforcing block 32, and the total length of the reinforcing block 32 is the vertical distance between the two end surfaces 322. One end of the connecting rod 33 is embedded in the reinforcing block 32 and extends into the body 325 through the buffer 326. Preferably, the edges of the reinforcing blocks 32 are rounded (blunted) to provide a smooth transition at the interface. In the present embodiment, a bending portion 331 is further bent at one end of the connecting rod 33 embedded in the reinforcing block 32, and the bending portion 331 is embedded in the body 325, so that the connecting rod 33 and the reinforcing block 32 are more stably connected, and the connecting rod 33 is prevented from being accidentally twisted relative to the reinforcing block 32 due to stress.

Referring to fig. 7, in the present embodiment, the coupling nut 34 has a substantially cylindrical shape, and threaded holes 341 are opened at both opposite ends of the coupling nut 34, and the thread directions of the two threaded holes 341 are the same. One of the threaded holes 341 of the two coupling nuts 34 is respectively in threaded connection with the coupling rods 33 of the two reinforcing blocks 32, and the other threaded hole 341 of each of the two coupling nuts 34 is in threaded connection with the connecting member 31. It is understood that in other embodiments, the number of the threaded holes 341 may be one, and in this case, the threaded holes 341 penetrate the coupling nut 34 in the axial direction of the coupling nut 34.

In the present embodiment, the connecting member 31 is a lip arch, and the opposite ends of the lip arch are provided with external threads, preferably, the external threads at the opposite ends of the lip arch are about 4mm in length; the lip bow is screw-coupled with the screw holes 341 at the other ends of the two coupling nuts 34 through the external threads at the opposite ends thereof. In this embodiment, the lip arch is formed by bending about 0.8 to 0.9mm thick steel wire and is resistant to deformation during traction. The labial arch is bent into a U-shaped curve 312 between the upper maxillary apical area and the lateral incisor area, and a labial stopper 313 is arranged between the middle incisor area and the lateral incisor area; preferably, lip stop 313 is substantially in the form of an oval about 3.5mm wide, about 8mm long and about 2mm thick, sheet made of self-setting plastic. The connection position of the front traction force-applying device 4 and the lip arch is positioned between the U-shaped bend 312 and the connecting nut 34. It is understood that the connection between the anterior traction and force application device 4 and the labial arch may be located at other locations of the labial arch as desired.

The anterior maxillary retractor 5 is an appliance for pulling the maxillary bone forward and promoting the development of the maxillary bone, and is commonly used for functional correction of early malocclusal deformity of teenagers, such as: and 3, correcting the III-type malocclusion deformity function of the upper jaw of the teenager, which is insufficient in upper jaw development and excessive in lower jaw slight development. The structure of the anterior maxillary retractor 5 in this embodiment is substantially the same as that of the prior art, and each of the anterior maxillary retractor includes a bracket 51, a positioning block 52 mounted on the bracket 51, a horizontal force applying rod 53 mounted on the positioning block 52, and a forehead pad 54 and a chin pocket 55 connected to opposite ends of the bracket 51, respectively; the difference is that in the present embodiment, an external thread (not shown) is provided on the outer wall of the horizontal forcing rod 53, and a limit nut 56 is screwed on the horizontal forcing rod 53.

Referring to fig. 8 to 11, in the present embodiment, the front traction and force-applying device 4 includes a spring 41, a force-applying hanging ring 42, a buckle 43 and a wire ring 44, the force-applying hanging ring 42 and the buckle 43 are respectively connected to two opposite ends of the spring 41, the force-applying hanging ring 42 is hung on an external thread of a horizontal force-applying rod 53 of the maxillary front tractor 5, in the present embodiment, the force-applying hanging rings 42 of the two front traction and force-applying devices 4 are both connected to the horizontal force-applying rod 53 through the force-applying hanging ring 42, and the connection portions of the two front traction and force-applying devices 4 and the horizontal force-applying rod 53 are respectively located on two opposite sides of the positioning block 52. The force application hanging ring 42 can be limited through the limiting nut 56, and the force application hanging ring 42 is prevented from being separated from the free tail end of the horizontal force application rod 53. In the present embodiment, the urging hook 42 and the catch 43 are fixedly connected to opposite ends of the spring 41, respectively. Preferably, the spring 41 is made of a steel wire with the diameter of 0.3-0.5mm, the outer diameter of the spring 41 is about 2mm, the inner diameter of the force application hanging ring 42 is about 4mm, the inner diameter of the buckle 43 is about 3mm, and the specific size can be set to other values according to the requirement.

The wire loop 44 includes a wire 441 and a flexible layer 443 covering the wire 441. The wire loop 44 can be stressed to be folded in half and sleeved on the lip arch, and the two opposite sides of the folded wire loop 44 are detachably connected with the spring 41 through the buckle 43. Preferably, the wire loop 44 is formed by surrounding a wire having a diameter of about 0.25mm thick, such as stainless steel wire, and preferably, the wire loop 44 is substantially circular with an inner diameter of about 3cm or elliptical with a major axis of about 3 cm. The flexible layer 443 is preferably a rubber layer, and two notches 46 are symmetrically arranged on two opposite sides of the flexible layer 443, and the diameter of each notch 46 is about 2 mm. When wire loop 44 fifty percent discount, two breach 46 are relative, and the buckle 43 card is located in two breach 46 to can carry out spacingly to buckle 43 position through breach 46, buckle 43 removes on wire loop 44 at will when avoiding pulling. The clasp 43 can be a spring clasp commonly used in necklaces, which belongs to the prior art and is not described herein for brevity.

The connection mode of the force applying hanging ring 42 and the buckle 43 with the two opposite ends of the spring 41 is not limited to the embodiment, please refer to fig. 12 together, in another embodiment, the two opposite ends of the spring 41 are both provided with hooks 411, the outer wall of the force applying hanging ring 42 is provided with a hanging hole 421, the outer wall of the buckle 43 is also provided with a hanging hole 431, and the two opposite ends of the spring 41 are detachably hooked with the hanging hole 421 of the force applying hanging ring 42 and the hanging hole 431 of the buckle 43 through the corresponding hooks 411, which is more convenient for manufacturing and is more beneficial for replacing parts.

When the invisible orthodontic anterior maxillary traction system is manufactured, after current intraoral three-dimensional data of a patient are obtained, the position of a target tooth is virtually moved by adopting a computer graphics technology related to CAD/CAM (computer aided design/computer aided manufacturing) and after the virtual movement is finished, three-dimensional printing is carried out on a plurality of virtual models by adopting a three-dimensional printing technology, after the three-dimensional printing is finished, a three-dimensional diaphragm attached to the three-dimensional model is formed by adopting a food and medicine level film pressing material heating mode, a reasonable edge cutting is carried out on the three-dimensional diaphragm, the edge is ensured to be in accordance with wearing and mechanical principles, and the invisible braces 2 are manufactured; the resin film formed by hot die pressing is made into a bag-shaped structure 21, and one end of the bag-shaped structure 21, which is opposite to the bag opening 210, is provided with a position avoiding hole 212; the reinforcing block 32 is manufactured by computer digital simulation technology, the shape of the reinforcing block is matched with the geometric shape of the bag-shaped structure 21, and the reinforcing block 32 and one end of the connecting rod 33 are embedded and fixed. The method for manufacturing the invisible tooth socket 2 belongs to the prior art, and is not described herein for brevity.

When the invisible orthodontic anterior maxillary traction system is installed, the bag-shaped structure 21 is fixedly adhered to the cusp area and the buccal side of the first premolar area of the invisible facing sleeve 2, and the bag opening 210 of the bag-shaped structure 21 faces to the far middle (maxillary molar direction); putting the invisible braces 2 containing the bag-shaped structures 21 into the mouth, and then putting the reinforcing blocks 32 provided with the connecting rods 33 into the containing cavities 211 of the bag-shaped structures 21 through the bag mouths 210, so that the connecting rods 33 extend out of the bag-shaped structures 21; the connecting rod 33 is connected with the labial arch through the connecting nut 34; the metal wire ring 44 is folded in half and then sleeved on the external thread of the labial arch, the buckle 43 is used for connecting the two opposite sides of the metal wire ring 44 after being folded in half, so that the labial arch, the metal wire ring 44 and the front traction force-applying device 4 are connected together, and the buckle 43 is positioned at the notch 46 of the flexible layer 443 of the metal wire ring 44; the force application hanging ring 42 of the front traction force application device 4 is sleeved outside the external thread of the horizontal force application rod 53 of the maxillary front tractor 5, and the limit nut 56 is connected with the horizontal force application rod 53 through the thread, so that the force application hanging ring 42 is prevented from falling off from the horizontal force application rod 53. In correction, the invisible correcting maxillary anterior traction system generates correcting force by connecting the labial arch, the anterior traction force-applying device 4 and the horizontal force-applying rod 53 of the maxillary anterior tractor 5. The invisible upper jaw front traction system is mainly worn at night, is recommended to be worn for about 12 hours every day, has low influence on daily social contact and learning and life, effectively keeps the advantages of invisible correction, attractiveness and comfort, and well combines the bow expansion effect of the invisible correction of the transparent braces during front traction.

Referring to fig. 14 and 15 together, a second embodiment of the invention provides an invisible orthodontic anterior maxillary traction system, which has a structure substantially the same as that of the first embodiment, and comprises an invisible facing 2, an intraoral traction device 3, a anterior traction and force-applying device 4 and an anterior maxillary retractor 5, with the difference in the structure of a connecting member 31. In this embodiment, the connecting member 31 includes two pulling rings 30, each pulling ring 30 includes a rod 301 and a connecting ring 303 connected to one end of the rod 301, the outer walls of the rods 301 of the two pulling rings 30 are respectively provided with an external thread, and the two pulling rings 30 are respectively connected to the other threaded holes 341 of the two connecting nuts 34 through the corresponding external threads. In the present embodiment, the connection ring 303 has a closed annular shape. Preferably, the pulling loop 30 is made of steel wire with a diameter of about 0.9mm thick, so that it can resist deformation during pulling; the rod body 301 is provided with an external thread with the length of about 4mm and is used for being in threaded connection with the connecting nut 34; the internal diameter of go-between 303 is about 7mm, is convenient for to be connected with the preceding thrust augmentation device 4, specifically is: the wire loop 44 of the front traction force-applying device 4 can be stressed to be folded in half and penetrate through the connecting ring 303, and two opposite sides of the folded wire loop 44 are detachably connected with the spring 41 through the buckle 43. Preferably, an external thread may be provided on the outer wall of the connection ring 303, and when the wire loop 44 is threaded on the traction ring 30, the front traction force applying device 4 can be prevented from moving freely by the external thread.

The structure of the pulling ring 30 is not limited to the embodiment, please refer to fig. 16, in another embodiment, each pulling ring 30 includes a rod 301 and a connection ring 303 connected to one end of the rod 301, and the other end of the rod 301 is fixedly connected to the connection nut 34. The pulling ring 30 is circular and has an opening (not shown) on one side. The provision of the opening further facilitates the mounting of the wire loop 44 with the connection ring 303.

The formation of the bag-shaped structure 21 is not limited to the embodiment, please refer to fig. 17 and 18 together, and a third embodiment of the present invention provides an invisible orthodontic anterior maxillary traction system, which has a structure substantially the same as that of the first embodiment, and comprises an invisible mouthpiece 2, an intraoral traction device 3, a anterior traction and force-applying device 4 and an anterior maxillary retractor 5, and the difference lies in the structure of the invisible mouthpiece 2. In the present embodiment, the invisible braces 2 comprise an inner layer invisible brace 26 and an outer layer invisible brace 27 which are sleeved together by pressing, the buccal side of the outer layer invisible brace 27 protrudes towards the buccal side to form an outer layer vacuole 28, the outer layer vacuole 28 penetrates through one side of the outer layer invisible brace 27 facing the inner layer invisible brace 26 and jointly encloses the bag-shaped structure 21 with the inner layer invisible brace 26, and the containing cavity 211 penetrates through one end of the outer layer vacuole 28 facing the maxillary molar to form the bag opening 210; the avoiding hole 212 is arranged at one end of the outer layer vacuole 28 opposite to the bag opening 210 in a penetrating way. During manufacturing, the bag opening 210 can be formed by punching on one side of the outer layer cavity 28 facing towards the upper jaw molar direction, and the dislocation-avoiding hole 212 can be formed by punching on one side of the outer layer cavity 28 opposite to the bag opening 210. The buccal side and the lingual side of the first molar region of the outer invisible dental mouthpiece 27 and the inner invisible dental mouthpiece 26 are both correspondingly provided with the annular retention vacuoles 23 in a protruding manner, and the annular retention vacuoles 23 of the inner invisible dental mouthpiece 26 are embedded in the annular retention vacuoles 23 of the outer invisible dental mouthpiece 27; the tongue sides of the double-cuspid tooth areas of the outer-layer invisible tooth socket 27 and the inner-layer invisible tooth socket 26 are correspondingly and convexly provided with double-cuspid tooth retention vacuoles 25, and the double-cuspid tooth retention vacuoles 25 of the inner-layer invisible tooth socket 26 are embedded in the double-cuspid tooth retention vacuoles 25 of the outer-layer invisible tooth socket 27. It both can realize the complete cladding effect to the tooth through the stealthy facing of inlayer 26, can form the bag structure 21 that can be connected with the tractor in front of the upper jaw at the stealthy facing of inlayer 26 and the stealthy facing of outer 27 again, and adopts the mode of the stealthy facing of inlayer 26 and the stealthy facing of outer 27 pressfitting to form bag structure 21, and it is easier to make, and need not to utilize chemical bonding or hot melt to connect, and the cost is lower and can not have the material hot melt after produce the appearance of the harmful toxic substance to the human body.

Above-mentioned maxillary place ahead traction system is rescued in stealthy, its stealthy facing 2 is connected with maxillary place ahead tractor 5 behind bag structure 21, boss 32, connecting piece 31 and the preceding traction thrust augmentation device 4, when correcting, the extraoral traction power loops through connecting piece 31, connecting rod 33, boss 32 transmits bag structure 21, bag structure 21 links firmly with stealthy facing 2 and transmits extraoral traction power, stealthy facing 2 is acted on periodontal and maxilla through the power of correcting of its deformation to reach the correction of tooth and the function of teenagers' early jawbone is correct. In addition, make bag-shaped structure 21 extend to first preceding molar region from the cuspid district in this embodiment, can greatly increased extraoral traction to the application of force region of stealthy facing 2, be favorable to improving the efficiency and the effect of correcting.

Above-mentioned upper jaw place ahead traction system is rescued in stealthy, bag-shaped structure 21 is connected with stealthy facing 2 through the mode that glues admittedly, need not to punch or excise on stealthy facing 2, can not destroy stealthy facing 2's wholeness and cladding effect, can realize the rescue of whole dentition to whole dentition's whole application of force to whole stealthy facing 2, and avoid it to set up on single tooth, cause unnecessary removal to the effect of single tooth.

Above-mentioned upper jaw place ahead traction system is rescued in stealthy, upper jaw place ahead tractor 5 passes through boss 32, bag-shaped structure 21 combines with stealthy facing 2, the boss 32, the combination form that bag-shaped structure 21 was pegged graft, it is compared in the pull arch or the hook of installing on stealthy facing 2 in prior art, the boss 32, bag-shaped structure 21 is difficult for taking place to warp or taking place the slope under the exogenic action, and bigger with stealthy facing 2's stress surface, make extraoral traction force can more evenly transmit to stealthy facing 2 on, therefore, it need not to thicken stealthy facing 2's stress site, reduce 2 inhomogeneous harmful effects of correcting the in-process and correcting the tooth of stealthy facing 2 thickness, and ensure that stealthy facing 2 wears comfortablely. Meanwhile, the reinforcing block 32 and the bag-shaped structure 21 are connected in an inserting mode, so that the assembly and disassembly are more convenient.

Above-mentioned anterior traction system of upper jaw is rescued in stealthy, boss 32 is in the same place with bag-shaped structure 21 grafting behind sack 210, and under the orientation design of sack 210 and the limiting displacement who accepts the chamber 211, boss 32 can not deviate from bag-shaped structure 21 under the effect of the outer traction force of mouth, under the prerequisite of guaranteeing safety, and the doctor can implement great external force to the stealthy ware of rescuring in advance of no support groove according to the patient's circumstances.

In the invisible orthodontic maxillary anterior traction system, the angular position of the reinforcing block 32 connected with the maxillary anterior retractor 5 can be limited by the accommodating cavity 211, and the force application direction of the extraoral traction force can be more accurately controlled compared with the mode of connecting the maxillary anterior retractor 5 by the traction protrusion, the pull ring, the notch and the like in the prior art. And when bag-shaped structure 21 glues admittedly, the doctor can set up bag-shaped structure 21's installation angle according to every patient's particular case, more conveniently can make individualized correction scheme to the patient.

Above-mentioned stealthy front traction system of correcting upper jaw, its bag structure 21 is hollow quadrangular structure, and has the swash plate 215 of slope setting, boss 32 has the inclined plane 323 with bag structure 21 swash plate 215 inner wall parallel contact, when correcting, not only can realize the transmission of extraoral force through the contact of boss 32 terminal surface 322 and bag structure 21 end plate 214, can also further increase the area of contact of boss 32 and bag structure 21 through the cooperation of inclined plane 323 and swash plate 215, make extraoral traction force can more evenly transmit to stealthy facing 2, prevent that stealthy facing 2 from taking place to warp.

In the invisible orthodontic maxillary anterior traction system, the reinforcing block 32 comprises the body 325 and the buffer part 326 which are connected with each other, the body 325 is made of hard resin and can better support the connecting rod 33, the buffer part 326 is made of soft lining resin, the soft lining resin has certain elasticity and has certain buffering effect, and the soft lining resin can apply more moderate and uniform external force to the bag-shaped structure 21 and the invisible facing 2, so that the deformation of the invisible facing 2 is further reduced.

Above-mentioned upper jaw place ahead traction system is rescued in stealthy, the lingual side in the two cuspid tooth district of its stealthy facing 2 is equipped with two cuspid tooth maintenance vacuole 25, can cooperate with the two cuspid intraoral maintenance annex 200 of being fixed in on first preceding molar 400 lingual side during the use, the buccal side and the lingual side in first molar district all are equipped with belt annular maintenance vacuole 23, can cooperate with the intraoral maintenance annex 100 of molar that is fixed in on first molar 300 during the use, thereby can be with stealthy facing 2 stable fixation on the upper jaw tooth. First molar region adopts belt annular maintenance vacuole 23, and it can simulate traditional just abnormal belt circle to the reinforcing is to the maintenance of the first molar 300 of upper jaw, and then has reduced the probability that stealthy facing 2 is taken off the cover when pulling. The bicuspid region is provided with the bicuspid retention vacuole 25 only on the lingual side thereof, which reduces interference when the reinforcing block 32 is put into the bag-shaped structure 21 while increasing retention to the first premolar 400 of the upper jaw, and facilitates the wearing of the anterior traction system for invisibly correcting the upper jaw.

In the invisible orthodontic maxillary anterior traction system, the labial arch is bent into the low-flat U-shaped bend 312 between the maxillary canine and the lateral incisor, so that the length of the labial arch is convenient to adjust, and the labial arch is prevented from being contacted with the invisible braces 2 to influence the orthodontic effect; a lip stop 313 is arranged between the middle incisor and the side incisor on both sides, and the muscle of the upper lip can be pushed away through the lip stop 313, so that the efficiency of front traction is increased.

Above-mentioned upper jaw place ahead traction system is rescued in stealthy, the horizontal stress application pole 53 of its upper jaw place ahead tractor 5 threaded structure, the accurate positioning of the afterburning of being convenient for and make afterburning hanging ring 42 be difficult for sliding, the free end-to-end connection of horizontal stress application pole 53 has limit nut 56, can avoid the place ahead to pull afterburning device 4 and deviate from horizontal stress application pole 53 and the place ahead of being convenient for pulls taking of afterburning device 4 and wear.

When the invisible orthodontic maxillary traction system is used, the front traction force applying device 4 comprises the spring 41, the force applying hanging ring 42, the buckle 43 and the wire ring 44, the spring 41, the force applying hanging ring 42 and the buckle 43 are positioned outside the mouth, the external mouth force is led into the mouth by the wire ring 44, the wire ring 44 is made of the wire 441, the design reduces the foreign body sensation in the mouth generated by the wire ring 44, the flexible layer 443 wraps the wire 441, when the invisible orthodontic maxillary traction system is worn, the lip of a patient is in contact with the flexible layer 443, stimulation to the mucous membrane of the lip can be reduced, the force can be continuously applied to the invisible facing 2 by utilizing the continuous characteristic of the force applying of the spring 41 and the wire 441, and the wire ring 44 and the spring 41 are not easy to age compared with elastic leather rings, the service life is longer, frequent replacement is not needed, materials are saved, and the continuous force applying performance is better; the wire ring 44 is connected with the spring 41 through the buckle 43, and the buckle 43, the spring 41 and the stress application hanging ring 42 are all positioned outside the mouth, so that the clothes can be taken conveniently and connected stably.

It is understood that the shapes of the bag-shaped structure 21, the accommodating cavity 211 and the reinforcing block 32 are not limited to the embodiment, for example, in other embodiments, the bag-shaped structure 21 may have a cubic shape, and the accommodating cavity 211 and the reinforcing block 32 may have a quadrangular prism-shaped cavity in the embodiment.

It is understood that the receiving cavity 211 is not limited to the quadrangular prism-shaped cavity in the present embodiment, for example, in other embodiments, the hole wall surrounding the receiving cavity 211 may have one or more first inclined portions, so that the cross-sectional area of the receiving cavity 211 becomes gradually smaller in a direction away from the bag opening 210; the reinforcing block 32 is correspondingly provided with one or more second inclined portions which can be in parallel contact with the first inclined portions.

It will be appreciated that the floor 213 of the pocket 21 may also cover only the first premolar region of the upper jaw, and may also cover only the cuspid region. The dimensions of the bag-shaped structure 21, the reinforcing blocks 32, the connecting members 31, the connecting rods 33, the connecting nuts 34, the front traction augmentation device 4, and the like may be set to other values as required.

It is understood that the invisible braces 2 can be set as the invisible braces for the lower jaw or can also comprise the invisible braces for the lower jaw according to the object to be corrected, which belongs to the prior art and is not described herein for brevity.

Other undescribed portions of the present invention are the same as the prior art.

The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides an upper jaw front traction system is rescued in stealth, its characterized in that: the tooth grinding machine comprises an invisible tooth socket (2), an intraoral traction device (3), a front traction force-applying device (4) and an upper jaw front tractor (5), wherein two bag-shaped structures (21) are arranged on the buccal side of the upper jaw of the invisible tooth socket (2) at intervals, each bag-shaped structure (21) is arranged in a cuspid tooth area and/or a first front tooth grinding area, an accommodating cavity (211) and a avoiding hole (212) are arranged in each bag-shaped structure (21), the accommodating cavity (211) penetrates through one end, facing the upper jaw tooth grinding area, of each bag-shaped structure (21) to form a bag opening (210), the avoiding hole (212) penetrates through one end, opposite to the bag opening (210), of each bag-shaped structure (21), and the avoiding hole (212) is communicated with the; the intraoral traction device (3) comprises a connecting piece (31), two reinforcing blocks (32) and two connecting nuts (34), one end of each reinforcing block (32) is connected with a connecting rod (33) with an external thread, the two reinforcing blocks (32) are detachably inserted into accommodating cavities (211) of two bag-shaped structures (21) through bag openings (210), the connecting rod (33) penetrates through an avoiding hole (212) corresponding to the bag-shaped structure (21), one ends of the two connecting nuts (34) are respectively in threaded connection with the connecting rods (33) of the two reinforcing blocks (32), and the other ends of the two connecting nuts (34) are connected with the connecting piece (31); the front traction force-applying device (4) connects the maxillary front tractor (5) and the connecting piece (31) together to realize traction.

2. The invisible orthotic anterior maxillary traction system of claim 1 wherein: the connecting piece (31) is a lip arch, the two opposite ends of the lip arch are respectively provided with an external thread, and the lip arch is in threaded connection with the two connecting nuts (34) through the external threads at the two opposite ends.

3. The invisible orthotic anterior maxillary traction system of claim 2 wherein: the labial arch is bent between the upper maxillary apical area and the lateral incisor area to form a U-shaped curve (312), and a labial stopper (313) is arranged between the middle incisor area and the lateral incisor area; the joint of the front traction force-applying device (4) and the labial arch is positioned between the U-shaped bend (312) and the connecting nut (34).

4. The invisible orthotic anterior maxillary traction system of claim 1 wherein: the connecting piece (31) comprises two traction rings (30), each traction ring (30) comprises a rod body (301) and a connecting ring (303) connected with one end of the rod body (301), the rod bodies (301) of the two traction rings (30) are provided with external threads which are respectively in threaded connection with the two connecting nuts (34), or the other ends of the rod bodies (301) of the two traction rings (30) are respectively fixedly connected with the two connecting nuts (34); the front traction force-applying device (4) is connected with the connecting ring (303).

5. The invisible orthotic anterior maxillary traction system of claim 1 wherein: the buccal side and the lingual side of the first molar region of the invisible tooth socket (2) are both provided with ring-shaped retention vacuoles (23), and the lingual side of the double-cuspid region of the invisible tooth socket (2) is provided with a double-cuspid retention vacuole (25).

6. The invisible orthotic anterior maxillary traction system of claim 1 wherein: the bag-shaped structure (21) is a hollow quadrangular structure and comprises two bottom plates (213), an end plate (214) and two opposite inclined plates (215) which are arranged in parallel and oppositely, the bottom plates (213) are in an isosceles trapezoid shape, the end plates (214) and the inclined plates (215) are rectangular, the end plates (214) are connected to the upper bottom edge of the bottom plates (213), the two inclined plates (215) are obliquely arranged and respectively connected to two inclined edges of the bottom plates (213), the end plates (214) and the inclined plates (215) jointly enclose the accommodating cavity (211), and the bag opening (210) is enclosed by one end of the bottom plates (213) far away from the end plates (214) and one end of the inclined plates (215) far away from the end plates (214); the avoiding hole (212) is communicated and arranged on the end plate (214); one of the bottom plates (213) is fixedly adhered to the buccal side of the invisible braces (2);

the reinforcing block (32) is a quadrangular structure which is in plug fit with the bag-shaped structure (21) and comprises two bottom surfaces (321) which are arranged in parallel and oppositely, two end surfaces (322) which are arranged in parallel and oppositely and two opposite inclined surfaces (323), the bottom surfaces (321) are in an isosceles trapezoid shape, the end surfaces (322) and the inclined surfaces (323) are both in a rectangle shape, one end surface (322) is connected with the lower bottom edge of the bottom surface (321), the other end surface (322) is connected with the upper bottom edge of the bottom surface (321), the two inclined surfaces (323) are obliquely arranged and respectively connected with the two inclined edges of the bottom surface (321), one end of the connecting rod (33) is pre-embedded in the end with the smaller cross section of the reinforcing block (32), when the reinforcing block (32) is inserted into the containing cavity (211), the end face (322) of the reinforcing block (32) with a smaller cross section can be abutted against the inner wall of the end plate (214), and the two inclined faces (323) can be respectively in parallel contact with the inner walls of the two inclined plates (215).

7. The invisible orthotic anterior maxillary traction system of claim 1 wherein: the hole wall which encloses the containing cavity (211) is provided with a first inclined part so that the cross section area of the containing cavity (211) is gradually reduced towards the direction far away from the bag opening (210); the reinforcing block (32) has a second inclined portion capable of being in parallel contact with the first inclined portion.

8. The invisible orthotic anterior maxillary traction system of claim 1 wherein: the bag-shaped structure (21) and the reinforcing block (32) are both made of resin, the reinforcing block (32) comprises a body (325) and a buffer part (326) which are connected with each other, the body (325) is made of hard resin, the buffer part (326) is made of soft lining resin, the buffer part (326) is positioned at one end of the reinforcing block (32) inserted in the accommodating cavity (211), and the buffer part (326) can elastically abut against the bag-shaped structure (21); one end of the connecting rod (33) penetrates through the buffer part (326) and extends into the body (325).

9. A invisible mouthpiece (2) characterized in that: two bag-shaped structures (21) are arranged on the buccal side of the invisible tooth socket (2) at intervals, each bag-shaped structure (21) is arranged in a cuspid tooth area and/or a first anterior molar area, each bag-shaped structure (21) is internally provided with an accommodating cavity (211) and a clearance hole (212), the accommodating cavity (211) penetrates through one end, facing the upper jaw molar, of the bag-shaped structure (21) to form a bag opening (210), the clearance hole (212) penetrates through one end, opposite to the bag opening (210), of the bag-shaped structure (21), and the clearance hole (212) is communicated with the accommodating cavity (211).

10. The invisible mouthpiece (2) of claim 9 wherein: the invisible tooth socket (2) comprises an inner-layer invisible tooth socket (26) and an outer-layer invisible tooth socket (27) which are sleeved together, the buccal side of the outer-layer invisible tooth socket (27) protrudes towards the buccal side to form an outer-layer vacuole (28), the outer-layer vacuole (28) and the inner-layer invisible tooth socket (26) jointly form a bag-shaped structure (21) with a containing cavity (211), and the containing cavity (211) penetrates through the outer-layer vacuole (28) and faces one end of a maxillary molar to form a bag opening (210); the avoiding hole (212) is arranged at one end of the outer layer vacuole (28) opposite to the bag opening (210) in a penetrating way.

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