CN216777255U

CN216777255U - Tongue side self-locking straight wire appliance

Info

Publication number: CN216777255U
Application number: CN202220274808.9U
Authority: CN
Inventors: 唐国华; 柳稚旭; 汪虹虹; 袁玲君
Original assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-06-21
Anticipated expiration: 2032-02-10

Abstract

The utility model provides a lingual self-locking straight wire arch appliance, which comprises a plurality of anterior tooth brackets, a plurality of anterior molar brackets, a plurality of molar brackets and a lingual arch wire; the anterior tooth bracket comprises an anterior tooth bracket bottom plate and a vertical self-locking groove; the anterior molar bracket comprises an anterior molar bracket bottom plate and a horizontal self-locking groove; the molar bracket comprises a molar bracket bottom plate and a horizontal extension groove; the tongue side arch wire is used for being connected with each vertical self-locking groove, each horizontal self-locking groove and each horizontal extending groove. The tongue side self-locking straight wire appliance provided by the embodiment of the utility model has the advantages of short operation time beside a chair and high expression efficiency, is simple to operate, has high comfort and satisfaction of patients, and is easy to popularize.

Description

Tongue side self-locking straight wire appliance

Technical Field

The utility model relates to the field of orthodontic brackets, in particular to a lingual self-locking straight wire arch appliance.

Background

The orthodontic appliance commonly used comprises a labial fixation correcting system, a lingual fixation correcting system and an invisible bracket-free correcting system. In the correction process, the lip side corrector has larger influence on the appearance due to the intuition and visibility. The invisible bracket-free correction is worn by the patient, and depends on the subjective fitting degree of the patient. The tongue side correction device is fixed on the inner side surface of the teeth of a patient, has higher attractiveness and concealment, does not depend on the wearing fit of the patient, and is more suitable for complex cases than the invisible bracket-free correction technology.

The existing lingual appliance system is divided into finished product and individuation according to the bracket manufacturing mode, and the individuation refers to an appliance which is manufactured by computer individuation design; self-locking and traditional non-self-locking are adopted according to the ligation mode of the arch wire and the bracket; the arch wire is divided into a straight wire arch and a mushroom arch according to the shape of the arch wire; slots classified according to slot size as 0.018 by 0.025 inch and 0.018 by 0.018 inch; the device is divided into a vertical groove and a horizontal groove according to the groove direction. At present, the personalized 0.018 multiplied by 0.025 inch vertical mushroom arch self-locking or non-self-locking system is commonly used in China, and the finished 0.018 multiplied by 0.018 inch horizontal groove self-locking straight wire arch system is available abroad.

The non-self-locking lingual appliance is complex to operate, the bracket is fixed on the inner side surface of the tooth of a patient, the operation difficulty of a doctor is obviously increased compared with that of the labial fixing appliance, the patient is required to perform related operations in a large-mouth state, and the longer the operation time is, the higher the discomfort of the patient is. Although the arch wire is fixed on the appliance through the lock cover structure of the tongue side self-locking bracket, the ligature wire and the ligation of accessories such as rubber chains are not needed, the operation time is reduced, however, the operation difficulty is larger because the tongue side self-locking bracket is used, the arch wire can not be completely put in place when entering the appliance groove, and therefore the groove of the bracket needs to reserve a larger gap so as to close the lock cover, the connection of the arch wire and the bracket is realized, and the reserved gap leads the arch wire and the groove to be not completely attached, the arch wire can not perfectly realize the tooth movement which is expected by a doctor through the bracket, the correction effect is influenced, and the correction time is prolonged.

0.018 by 0.025 inch vertical mushroom arches use 0.016 by 0.022 inch or 0.017 by 0.025 inch banded archwires, which are difficult for a physician to adjust during clinical procedures, especially for 0.022 inch or 0.025 inch vertical archwire which is difficult to adjust to slot; the mushroom-shaped arch wire has a larger bending point in the distal part of the cuspid to influence the movement of the anterior teeth and the closing of the gap between the anterior teeth, so that the efficiency is lower; meanwhile, the mushroom-type arch wire shape increases the length of the arch wire, reduces the rigidity of the arch wire and needs to use the arch wire with larger diameter. And the 0.018 multiplied by 0.018 inch square horizontal groove is easy to remove the arch wire from the groove during the process of positioning the arch wire or during the retraction of anterior teeth in an extraction case, and the arch wire is difficult to position and close the locking cover when the 0.018 multiplied by 0.018 inch full-size arch wire is used.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a lingual self-locking straight wire appliance that addresses the deficiencies of the prior art.

In order to achieve the above objects and other related objects, the present invention provides a lingual autolocking straight wire arch appliance, comprising a plurality of anterior tooth brackets, a plurality of anterior molar brackets, a plurality of molar brackets and a lingual arch wire; the anterior tooth bracket comprises an anterior tooth bracket bottom plate and a vertical self-locking groove; the front tooth bracket bottom plate and the vertical self-locking groove are integrally formed or welded and fixed; the anterior molar bracket comprises an anterior molar bracket bottom plate and a horizontal self-locking groove; the premolar bracket bottom plate and the horizontal self-locking groove are integrally formed or welded and fixed; the molar bracket comprises a molar bracket bottom plate and a horizontal extension groove; the molar bracket bottom plate and the horizontal extension groove are integrally formed or welded and fixed; the tongue side arch wire is used for being connected with each vertical self-locking groove, each horizontal self-locking groove and each horizontal extending groove.

Preferably, the vertical self-locking groove comprises a vertical self-locking groove base, and the vertical self-locking groove base and the bottom plate of the front denture base are integrally formed or welded and fixed; a vertical groove for the tongue side arch wire to pass through is arranged in the vertical self-locking groove base; a vertical groove self-locking cover covers the vertical groove; under the use state, the edge of the vertical groove near the gum side is provided with a square ligation wing, and the edge of the vertical groove far from the gum side is provided with a square ligation wing.

Preferably, the horizontal self-locking groove comprises a horizontal self-locking groove base, and the horizontal self-locking groove base and the front molar bracket bottom plate are integrally formed or welded and fixed; a horizontal groove for the tongue side arch wire to pass through is arranged in the horizontal self-locking groove base; a horizontal groove self-locking cover is covered on the horizontal groove; and the edges of the two sides of the horizontal groove are provided with horizontal groove tie wings.

Preferably, the horizontal extension groove comprises a horizontal extension groove base, and the horizontal extension groove base and the molar bracket bottom plate are integrally formed or welded and fixed; an extension groove for the tongue side arch wire to pass through is arranged in the horizontal extension groove base; an extension groove self-locking cover covers the extension groove; the edges of two sides of the extending groove are provided with extending groove ligation wings; the extension groove ligation wing is also provided with a traction hook; and two ends of the extension groove are provided with groove extension wings.

Preferably, the lingual self-locking straight wire arch appliance further comprises a ligature wire, and the ligature wire is detachably connected with the gingival square ligature wing and/or the horizontal groove ligature wing and/or the extension groove ligature wing.

As mentioned above, the lingual self-locking straight wire appliance of the utility model has the following beneficial effects:

the lingual self-locking straight wire arch appliance improves the correction efficiency by reasonably and orderly using self-locking and ligation technologies, the arch wire is fixed on the bracket by the self-locking cover in the early orthodontic period, the clinical operation time is short, the freedom degree of the arch wire is high, the friction is small, the rapid movement of the teeth is facilitated, the dentition alignment efficiency is improved, the arch wire is fixed by the ligature wire in the later orthodontic period, the accurate expression of arch wire data is facilitated, the three-dimensional position of the teeth is accurately controlled, the operation time can be further shortened in the operation process, and the diagnosis satisfaction degree and the comfort level of a patient are improved.

The square arch wire of the tongue side self-locking straight wire arch appliance is matched with the straight wire arch technology, arch wire bending is reduced, gap closing efficiency is high, the square arch wire is convenient for the fine adjustment and bending of the arch wire at the final correction stage, the length of the straight wire arch wire is reduced, and the defect of insufficient rigidity of the square arch wire is overcome.

Drawings

FIG. 1 is a schematic view of an anterior socket of the lingual self-locking straight wire appliance of the present invention.

FIG. 2 is a schematic view of the vertical self-locking slot of the lingual self-locking straight wire appliance of the present invention.

FIG. 3 is a schematic view of the premolar bracket of the lingual self-ligating straight wire appliance of the present invention.

Fig. 4 is a schematic view of the horizontal self-locking slot of the lingual self-locking straight wire appliance of the present invention.

FIG. 5 is a schematic view of the molar brackets of the lingual self-ligating straight wire appliance of the present invention.

FIG. 6 is a schematic view of the horizontal extension slot of the lingual self-locking straight wire appliance of the present invention.

FIG. 7 is a diagram showing the relationship between the position of the horizontal slot tie wings and the bottom of the horizontal slot of the lingual self-locking straight wire appliance of the present invention.

Fig. 8 is a diagram showing the relationship between the extended slot tie wings and the extended slot bottom of the lingual self-locking straight wire appliance of the present invention.

FIG. 9 is a schematic view of the tongue-side self-locking straight wire arch appliance of the present invention assembled to a tooth.

In the drawings, 1, a molar bracket; 11. a molar bracket base plate; 12. a horizontal extension groove; 13. a horizontal extension groove base; 14. extending the groove; 15. extending slot tie wings; 16. an extension groove self-locking cover; 17. a towing hook; 18. a slot extending wing; 181. a square bulge is formed; 182. a square convex gum is formed; 2. an anterior dental bracket; 21. an anterior tooth bracket base plate; 22. a vertical self-locking groove; 23. a vertical self-locking slot base; 24. a vertical trench; 25. a square ligating wing; 26. a vertical slot self-locking cover; 27. gingiva square ligation wing; 28. a circular sucker; 29. a bucket-shaped structure; 3. a molar bracket; 31. a molar bracket base plate; 32. a horizontal self-locking groove; 33. a horizontal self-locking groove base; 34. a horizontal slot; 35. a horizontal slot tie wing; 36. a horizontal slot self-locking cover; 5. a lingual arch wire; 51. an anterior arch wire; 52. a posterior arch wire; 6. horizontal spacing I; 7. a horizontal spacing II; 8. and (5) binding the wires.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

Please refer to fig. 1 to 9. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

As shown in fig. 1 to 9, an embodiment of the present invention provides a lingual self-locking straight wire appliance, including a plurality of anterior denture trough 2, a plurality of anterior molar bracket 3, a plurality of molar bracket 1 and a lingual arch wire 5; the anterior tooth bracket 2 comprises an anterior tooth bracket bottom plate 21 and a vertical self-locking groove 22; the front tooth bracket bottom plate 21 and the vertical self-locking groove 22 are integrally formed or welded and fixed; the premolar bracket 3 comprises a premolar bracket bottom plate 31 and a horizontal self-locking groove 32; the premolar bracket bottom plate 31 and the horizontal self-locking groove 32 are integrally formed or welded and fixed; the molar bracket 1 comprises a molar bracket bottom plate 11 and a horizontal extension groove 12; the molar bracket bottom plate 11 and the horizontal extension groove 12 are integrally formed or welded and fixed; the lingual archwire 5 is adapted to connect with each of the vertical self-locking slots 22, the horizontal self-locking slots 32 and the horizontally extending slot 12.

The lingual self-locking straight wire appliance accurately controls teeth through the vertical self-locking groove 22 on the anterior tooth bracket 2, the horizontal self-locking groove 32 on the anterior molar bracket 3 and the horizontal extension groove 12 on the molar bracket 1 in combination with the lingual arch wire 5, and the lingual arch wire 5 is matched with the straight wire appliance technology, so that arch wire bending can be reduced, and lingual correction efficiency can be improved.

In an alternative embodiment, as shown in fig. 1-2, in the lingual self-locking straight wire appliance of the present invention, the vertical self-locking slot 22 comprises a vertical self-locking slot base 23, and the vertical self-locking slot base 23 is integrally formed with or welded to a bottom plate of the anterior denture base; a vertical groove 24 for the tongue side arch wire 5 to pass through is arranged in the vertical self-locking groove base 23; the vertical groove 24 is covered with a vertical groove self-locking cover 26; in a use state, the edge of the vertical groove 24 close to the gum side is provided with a square ligature wing 27, and the edge of the vertical groove 24 far away from the gum side is provided with a square ligature wing 25. The two sides of the square ligation wings 25, which are attached to the vertical groove self-locking cover 26, are provided with slideways, so that the vertical groove self-locking cover 26 can slide along the slideways, and the gum square ligation wings 27 are provided with limiting sheaths, so that one end of the vertical groove self-locking cover 26 is limited in the slideways while the vertical groove self-locking cover 26 slides in the slideways, and the vertical groove self-locking cover 26 can be ensured to seal the vertical groove 24 to form self-locking. The transverse width of the bottom of the vertical slot 24 is greater than the transverse width of the vertical slot self-locking cap 26, which facilitates control of the twisting and tilting of the teeth. The vertical self-locking groove base 23 is of a bucket-shaped structure 29, so that when the ligature wire is used for fixing the arch wire in the later orthodontic period, the ligature wire can slide to the lowest part of the vertical self-locking groove base 23 along the bucket-shaped structure 29, the ligature wire is convenient to take place and tightly ligature, the clearance in the groove is eliminated, the three-dimensional position of the tooth is accurately controlled, and the arch wire data are completely expressed.

In an alternative embodiment, as shown in fig. 3-4, in the lingual autolocking straight wire appliance of the present invention, the horizontal autolocking slot 32 comprises a horizontal autolocking slot base 33, and the horizontal autolocking slot base 33 is integrally formed with or welded to the premolar bracket base plate; a horizontal groove 34 for the tongue-side arch wire 5 to pass through is arranged in the horizontal self-locking groove base 33; a horizontal groove self-locking cover 36 covers the horizontal groove 34; the two side edges of the horizontal groove 34 are provided with horizontal groove tie wings 35. The transverse width of the bottom of the horizontal slot 34 is greater than the transverse width of the horizontal slot self-locking cover 36. In a use state, the two sides of the horizontal groove ligating wing 35 at the far gum side, which are attached to the horizontal groove self-locking cover 36, are provided with slideways, so that the horizontal groove self-locking cover 36 can slide along the slideways, and the horizontal groove ligating wing 35 at the near gum side is provided with a limiting sheath, so that the horizontal groove self-locking cover 36 slides in the slideways, and one end of the horizontal groove self-locking cover 36 is limited in the slideways, so that the horizontal groove self-locking cover 36 can seal the horizontal groove 34 to form self-locking. The friction force caused by a conventional ligature ring is reduced through the self-locking structure, the teeth are aligned quickly, and the operation time is saved.

In an alternative embodiment, as shown in fig. 5-6, in the lingual autolocking straight wire appliance of the present invention, the horizontal extension slot 12 includes a horizontal extension slot base 13, and the horizontal extension slot base 13 is integrally formed or welded with the molar bracket base plate 11; an extension groove 14 for the lingual arch wire 5 to pass through is arranged in the horizontal extension groove base 13; an extension groove self-locking cover 16 is covered on the extension groove 14; extension groove tie wings 15 are arranged on the edges of the two sides of the extension groove 14; the extension groove ligature wing 15 is also provided with a traction hook 17; the extending groove 14 is provided at both ends thereof with groove extending wings 18. In the use state, the groove extending wing 18 is a square protrusion 181 arranged on the middle side of the near dentition and a gum square protrusion 182 arranged on the middle side of the far dentition on the extending groove 14. The occlusal protrusion 181 may block the archwire from shifting in the occlusal direction and the gingival protrusion 182 may block the archwire from shifting in the gingival direction. And the middle side of the near dentition on the extending groove 14 is not provided with a gum square bulge structure, and the middle side of the far dentition is not provided with a square bulge structure, so that the gap of the groove can be eliminated when the ligature wire is tied to a proper position with the arch wire.

In an alternative embodiment, as shown in fig. 1-6, in the lingual self-locking straight wire arch appliance of the utility model, the lingual arch wire 5 is a square arch wire. The size of the square archwire is preferably 0.018 x 0.018 inches. The square arch wire is convenient for fine adjustment and bending of the arch wire in the final correction stage. The length of the side of the square arch wire is not larger than the longitudinal width of the vertical groove 24 and/or the horizontal groove 34 and/or the extended groove 14. The length of the side of the square archwire is less than the depth of the vertical slot 24 and/or the horizontal slot 34 and/or the extended slot 14. The vertical slots 24 preferably have dimensions of 0.018 inches wide by 0.020 inches deep. The horizontal slot 34 preferably has dimensions of 0.018 inches wide by 0.020 inches deep. The dimensions of the elongate slot 14 are preferably 0.018 inch wide by 0.020 inch deep. The enough groove depth enables the arch wire to easily enter the groove in the in-place process, the arch wire is not easy to fall off after in-place, and the self-locking cover is convenient to close.

When the orthodontic bracket is used, the tongue side arch wire 5 is fixed on the bracket by utilizing the vertical groove self-locking cover 26 and/or the horizontal groove self-locking cover 36 and/or the extension groove self-locking cover 16 in the early orthodontic period, the 0.018 multiplied by 0.20 inch groove is matched with the 0.018 multiplied by 0.018 inch square arch wire, the arch wire is convenient to enter the groove and not easy to fall off, the self-locking cover is convenient to close, the clinical operation time is short, the freedom degree of the arch wire is high, the friction force is small, the rapid movement of teeth is facilitated, and the tooth alignment efficiency is improved.

In an alternative embodiment, as shown in fig. 7 to 8, in the lingual self-locking straight wire appliance of the present invention, in a use state, the lower end of the connection between the gingival side tie wing 27 and the vertical self-locking slot base 23 is lower than the upper end of the lingual arch wire 5 placed in the vertical slot 24; the distance from the vertical groove self-locking cover 26 to the bottom of the vertical groove 24 is larger than the side length of the square arch wire. In a use state, the horizontal distance I6 between the side of the horizontal groove ligating wing 35 close to the front molar bracket bottom plate 31 and the groove bottom of the horizontal groove 34 is smaller than the side length of the square arch wire; the distance from the horizontal groove self-locking cover 36 to the bottom of the horizontal groove 34 is larger than the side length of the square arch wire. In a use state, the horizontal distance II 7 between the side of the extension groove ligating wing 15 close to the molar bracket bottom plate 11 and the groove bottom of the extension groove 14 is smaller than the side length of the square arch wire; the distance of the extending groove self-locking cover 16 from the bottom of the extending groove 14 is larger than the side length of the square arch wire. The distance between the self-locking cover and the bottom of the groove is larger than the side length of the square arch wire, so that the arch wire can be conveniently inserted into the groove; and the small distance between the ligating wing and the bottom of the groove ensures that the arch wire is completely pressed into the groove without clearance during ligation, thereby realizing tight ligation and completely expressing the prefabricated data of the groove.

In an alternative embodiment, as shown in fig. 2, 7 and 8, the lingual self-locking straight wire appliance of the utility model further comprises a ligature wire 8, wherein the ligature wire 8 is detachably connected with the gingival square ligature wing 27 and/or the horizontal slot ligature wing 35 and/or the extension slot ligature wing 15.

When the orthodontic bracket is used, the lingual arch wire 5 is fixed by the ligature wire 8 at the later stage of orthodontic treatment, and in the anterior bracket 2, the ligature wire 8 is arranged on the gingival square ligature wing 27 to accurately limit the lingual arch wire 5 in the groove and eliminate the groove clearance; in the anterior molar bracket 3, the ligature wire 8 is arranged on the horizontal groove ligature wing 35; in the molar bracket 1, the ligature wire 8 is arranged on the ligature wing 15 of the extension groove; the lingual arch wire 5 is closely matched with the bottoms of the vertical groove 24 and/or the horizontal groove 34 and/or the extended groove 14, so that the precise expression of the lingual arch wire 5 data is facilitated, and the three-dimensional position of the tooth is precisely controlled.

In an alternative embodiment, as shown in FIG. 1, in the lingual side self-ligating straight wire appliance of the utility model, the attachment surface of the bracket base 21 of the anterior teeth is curved to conform to the lingual curved surface of the anterior teeth. The attachment surface of the premolar bracket base plate 31 is a curved surface shape that fits the lingual curved surface of the premolar. The binding surface of the molar bracket base plate 11 is a curved surface shape which is matched with the lingual curved surface of the molar. The binding surfaces of the anterior tooth bracket bottom plate 21 and/or the anterior molar bracket bottom plate 31 and/or the molar bracket bottom plate 11 are provided with a plurality of circular suckers 28, so that the bonding strength of the bottom plates can be enhanced.

In an alternative embodiment, as shown in fig. 9, in the lingual self-locking straight wire appliance of the present invention, the lingual archwire 5 comprises an anterior archwire 51 and a posterior archwire 52; the anterior arch wire 51 is used for connecting each anterior bracket 2; the posterior dental archwire 52 is for attachment to each anterior molar bracket 3 and/or for attachment to each molar bracket 1; the anterior arch wire 51 and the posterior arch wire 52 are of a unitary construction or are smoothly connected. The anterior arch wire 51 is smoothly arcuate. The posterior arch wire 52 is linear. The arch of the straight wire is adopted, and the position of the groove is deviated to the root direction compared with the traditional bracket, so that the correcting force is closer to the center of impedance, and the length of the arch wire is reduced to increase the rigidity of the arch wire; the arch wire is removed with mushroom shape, which is beneficial to closing the gap.

In an alternative embodiment, as shown in FIG. 9, in the lingual self-ligating straight wire appliance of the utility model, both ends of a lingual archwire 5 are passed through brackets of the lingual tube-containing structure.

In conclusion, the lingual self-locking straight wire appliance provided by the embodiment of the utility model has the advantages of short chair-side operation time and high expression efficiency, is simple to operate, has high patient comfort and satisfaction, and is easy to popularize. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A lingual self-locking straight wire appliance is characterized by comprising a plurality of anterior tooth brackets (2), a plurality of anterior molar brackets (3), a plurality of molar brackets (1) and a lingual arch wire (5); the anterior tooth bracket (2) comprises an anterior tooth bracket bottom plate (21) and a vertical self-locking groove (22); the front tooth bracket bottom plate (21) and the vertical self-locking groove (22) are integrally formed or welded and fixed; the anterior molar bracket (3) comprises an anterior molar bracket bottom plate (31) and a horizontal self-locking groove (32); the premolar bracket bottom plate (31) and the horizontal self-locking groove (32) are integrally formed or welded and fixed; the molar bracket (1) comprises a molar bracket bottom plate (11) and a horizontal extension groove (12); the molar bracket bottom plate (11) and the horizontal extension groove (12) are integrally formed or welded and fixed; the lingual arch wire (5) is used for connecting with each of the vertical self-locking slot (22), the horizontal self-locking slot (32) and the horizontal extension slot (12).

2. The lingual autolock straight wire appliance of claim 1, wherein the vertical self-locking slot (22) comprises a vertical self-locking slot base (23), the vertical self-locking slot base (23) being integrally formed or welded to the anterior bracket base (21); a vertical groove (24) for the tongue side arch wire (5) to pass through is arranged in the vertical self-locking groove base (23); a vertical groove self-locking cover (26) is covered on the vertical groove (24); in a use state, a gingiva square ligation wing (27) is arranged at the edge of the vertical groove (24) close to the gingiva side, and a close square ligation wing (25) is arranged at the edge of the vertical groove (24) far away from the gingiva side; and/or the horizontal self-locking groove (32) comprises a horizontal self-locking groove base (33), and the horizontal self-locking groove base (33) and the front molar bracket bottom plate (31) are integrally formed or fixedly welded; a horizontal groove (34) for the tongue side arch wire (5) to pass through is arranged in the horizontal self-locking groove base (33); a horizontal groove self-locking cover (36) is covered on the horizontal groove (34); the edges of two sides of the horizontal groove (34) are provided with horizontal groove tie wings (35);

and/or the horizontal extension groove (12) comprises a horizontal extension groove base (13), and the horizontal extension groove base (13) is integrally formed or fixedly welded with the molar bracket base plate (11); an extension groove (14) for the tongue side arch wire (5) to pass through is arranged in the horizontal extension groove base (13); an extension groove self-locking cover (16) is covered on the extension groove (14); the edges of two sides of the extending groove (14) are provided with extending groove tie wings (15); the extension groove ligation wing (15) is also provided with a traction hook (17); two ends of the extending groove (14) are provided with groove extending wings (18);

and/or the lingual arch wire (5) is a square arch wire.

3. The lingual self-locking straight wire appliance of claim 2, wherein the transverse width of the bottom of the vertical slot (24) is greater than the transverse width of the vertical slot self-locking cover (26);

and/or the vertical self-locking groove base (23) is of a bucket-shaped structure (29);

and/or the transverse width of the bottom of the horizontal groove (34) is larger than that of the horizontal groove self-locking cover (36);

and/or in the use state, the groove extending wing (18) is a square protrusion (181) arranged on the middle side of the near dentition and a gum square protrusion (182) arranged on the middle side of the far dentition on the extending groove (14).

4. The lingual self-locking straight wire appliance of claim 2, wherein the length of the side of the square archwire is no greater than the longitudinal width of the vertical slot (24) and/or the horizontal slot (34) and/or the extension slot (14);

and/or the side length of the square arch wire is smaller than the depth of the vertical groove (24) and/or the horizontal groove (34) and/or the extending groove (14).

5. The lingual self-locking straight wire appliance of claim 2, wherein in use, the lower end of the junction of the gingival tie wing (27) and the vertical self-locking slot base (23) is lower than the upper end of the lingual arch wire (5) placed in the vertical slot (24); the distance between the vertical groove self-locking cover (26) and the bottom of the vertical groove (24) is greater than the side length of the square arch wire;

and/or in a use state, the horizontal distance I (6) between the side of the horizontal groove ligating wing (35) close to the front molar bracket bottom plate (31) and the bottom of the horizontal groove (34) is smaller than the side length of the square arch wire; the distance between the horizontal groove self-locking cover (36) and the bottom of the horizontal groove (34) is greater than the side length of the square arch wire;

and/or in a use state, the horizontal distance II (7) between the side of the extension groove ligating wing (15) close to the molar bracket bottom plate (11) and the bottom of the extension groove (14) is smaller than the side length of the square arch wire; the distance between the extension groove self-locking cover (16) and the bottom of the extension groove (14) is larger than the side length of the square arch wire.

6. The lingual self-locking straight wire appliance of any one of claims 1 to 5, further comprising a ligature wire (8), wherein the ligature wire (8) is detachably connected with the gingival square tie wings (27) and/or the horizontal slot tie wings (35) and/or the extension slot tie wings (15).

7. The lingual autolocking straight wire appliance of claim 1, wherein the abutment surface of the anterior bracket base (21) is a curved surface shape that conforms to the lingual curved surface of the anterior tooth;

and/or the binding surface of the anterior molar bracket bottom plate (31) is in a curved surface shape which is inosculated with the lingual curved surface of the anterior molar;

and/or the binding surface of the molar bracket bottom plate (11) is in a curved surface shape which is matched with the lingual curved surface of the molar.

8. The lingual self-ligating straight wire appliance of claim 7, wherein the abutting surface of the anterior bracket base (21) and/or the anterior molar bracket base (31) and/or the molar bracket base (11) is provided with a plurality of circular suction cups (28).

9. The lingual self-locking straight wire appliance of claim 1, wherein the lingual archwire (5) comprises an anterior archwire (51) and a posterior archwire (52); the anterior arch wire (51) is used for being connected with each anterior denture trough (2); the rear dental arch wire (52) is used for connecting with each front molar bracket (3) and/or is used for connecting with each molar bracket (1); the front dental arch wire (51) and the rear dental arch wire (52) are in an integrated structure or are smoothly connected.

10. The lingual self-locking straight wire appliance of claim 9, wherein the anterior arch wire (51) is smoothly curved;

and/or the posterior arch wire (52) is linear;

and/or both ends of the lingual arch wire (5) penetrate through a bracket of the lingual tube structure.