CN221578161U - Comfortable self-locking bracket and children early-stage tooth correction composite device - Google Patents

Abstract

The utility model discloses a comfortable self-locking bracket which comprises a bracket bottom plate and a bracket main body arranged on the bracket bottom plate, wherein an annular groove surrounding the axis of the bracket main body is arranged at the bottom of the bracket main body, a horizontal groove is arranged at the top of the bracket main body, and the bracket main body is divided into an upper bracket wing and a lower bracket wing by the horizontal groove; the lower support wing is provided with a slidable self-locking sliding cover, the self-locking sliding cover locks the horizontal groove when sliding close to the upper support wing, and the self-locking sliding cover opens the horizontal groove when sliding far away from the upper support wing. The comfortable self-locking bracket has a self-locking function, can prevent the appliance archwire from falling off, and has better wearing comfort. The utility model also discloses a composite device for children early-stage tooth correction, which comprises the comfortable self-locking bracket.

Description

Comfortable self-locking bracket and children early-stage tooth correction composite device

Technical Field

The utility model relates to a dental orthodontic medical appliance, in particular to a comfortable self-locking bracket and an early-stage dental correction composite device for children.

Background

The vast majority of dentofacial deformities are deformities of teeth, jawbone and craniofacial, such as uneven tooth arrangement, abnormal occlusion relationship between upper dental arch and lower dental arch, abnormal jawbone size, morphology, position and the like, caused by congenital genetic factors or acquired environmental factors, such as diseases, bad oral habits, abnormal replacement teeth and the like, in the growth and development process of children. The Chinese oral medical society oral orthodontics special committee organizes 25392 deciduous teeth stage, tooth replacement stage, permanent dentition early children and teenagers in 7 regions of the whole country, and researches on the prevalence rate of the odontopathy show that the prevalence rate of the odontopathy in the deciduous teeth stage is 51.84%, tooth replacement stage is 71.21% and permanent dentition early stage is 72.92%.

Early preventing the occurrence of the dental deformity, and timely performing early treatment on the occurring deformity to block the development of the deformity, or guiding the benign development of the dental maxillofacial region through early control, thereby ensuring the healthy development and growth of the oral jaw, craniofacial region and mind and body of children. In addition, the early prevention and treatment of the maxillofacial deformity can fully utilize the potential of growth and development to improve the treatment efficiency; can reduce the treatment difficulty of certain complex dentognathic deformities and is beneficial to the orthodontic treatment of the dentition period. Therefore, the early prevention and treatment of the children maxillofacial deformity is an important discipline content of the orthodontics and is also an important task of the orthodontist.

The technology of 2 x 4 or 2*6 is a square wire arch correction technology proposed by Malligan doctor in 1982 according to the mechanics principle, and the technology is named 2 x 4 or 2*6 because the standard square wire arch bracket of 0.022 system and the upper and lower 2 abrasion-resistant tooth bonding belt rings are adhered to 4 or 6 front teeth in front. The technology is simple to operate and is used for early correction of children maxillofacial deformity, such as front teeth inverse jaw, front teeth non-occlusion contact, tooth gap, individual teeth torsion and the like by an orthodontist due to the fact that only a small number of brackets are needed to be bonded simply.

However, in practical application work, the existing square wire arch metal bracket and metal strap ring are designed for teenagers and adults, and as the children's oral cavity space is small, in clinical application, orthodontists find that children patients often wear the appliance and the parents require to remove the appliance, the appliance cannot adhere to the oral mucosa, and finally early treatment of children's maxillofacial deformity has to be abandoned due to the fact that the edges of the bracket are sharp, the traction hooks attached to the strap ring are long, the tail ends of the archwires placed in the strap ring buccal tube are easy to slide out and the like.

Disclosure of utility model

In order to solve the defects in the prior art, the utility model provides a comfortable self-locking bracket and an early-stage orthodontic composite device for children, which have a self-locking function and can prevent a common ligature wire from falling off and scratching oral mucosa; compared with the prior art of square wire bow metal brackets, metal belt rings and the like used by 2 x 4 or 2*6, the method can more enable children patients to feel comfortable, and enable doctors to easily operate, so that the 2 x 4 or 2*6 technology can be better and widely applied to early treatment of children maxillofacial deformity, and children with maxillofacial deformity can be comfortably and efficiently treated in early stage.

The technical problems to be solved by the utility model are realized by the following technical scheme:

The comfortable self-locking bracket comprises a bracket bottom plate and a bracket main body arranged on the bracket bottom plate, wherein an annular groove surrounding the axis of the bracket main body is arranged at the bottom of the bracket main body, a horizontal groove is arranged at the top of the bracket main body, and the bracket main body is divided into an upper bracket wing and a lower bracket wing by the horizontal groove; the lower support wing is provided with a slidable self-locking sliding cover, the self-locking sliding cover locks the horizontal groove when sliding close to the upper support wing, and the self-locking sliding cover opens the horizontal groove when sliding far away from the upper support wing.

Further, when the self-locking sliding cover slides to be connected with the upper supporting wing, the top end face and the peripheral side face of the supporting groove main body which are formed by the upper supporting wing, the lower supporting wing and the self-locking sliding cover are planes, cambered surfaces or spherical surfaces.

Further, a sliding cover groove is formed in the lower support wing, the axis direction of the sliding cover groove is perpendicular to the horizontal groove, and the self-locking sliding cover is assembled and accommodated in the sliding cover groove; the self-locking sliding cover is characterized in that first limiting sliding grooves are formed in the inner walls of the two sides of the sliding cover groove, limiting sliding blocks matched with the first limiting sliding grooves are arranged on the outer walls of the two sides of the self-locking sliding cover, and the limiting sliding blocks are embedded into the corresponding first limiting sliding grooves.

Further, a sliding cover connecting groove for the self-locking sliding cover to slide into and be connected with is formed on one side of the upper supporting wing facing the lower supporting wing.

Further, second limiting sliding grooves are formed in the inner walls of the two sides of the sliding cover connecting groove, and when the self-locking sliding cover slides into the sliding cover connecting groove, the limiting sliding blocks are embedded into the corresponding second limiting sliding grooves.

Furthermore, an unlocking groove is further formed in the top of one side, far away from the self-locking sliding cover, of the sliding cover connecting groove, or/and a grid groove is formed in the bottom surface of the bracket bottom plate.

Further, the comfortable self-locking bracket is divided into four bracket types of a maxillary central incisor self-locking bracket, a maxillary lateral incisor self-locking bracket, a mandibular incisor self-locking bracket and a universal self-locking bracket, wherein the lengths of the maxillary central incisor self-locking bracket, the maxillary lateral incisor self-locking bracket and the universal self-locking bracket are larger than the widths thereof, and the lengths of the mandibular incisor self-locking bracket are smaller than the widths thereof; the upper jaw middle incisor self-locking bracket, the upper jaw side incisor self-locking bracket and the lower jaw self-locking bracket adopt plane bottom surfaces, and the bracket bottom plate of the universal self-locking bracket adopts cambered surface bottom surfaces.

An early-stage dental correction composite device for children comprises a maxillary part and a mandibular part, wherein the maxillary part and the mandibular part respectively comprise 4 or 6 comfortable self-locking brackets, 2 comfortable buccal tubes and correction archwires; the correction archwire is sequentially embedded into the horizontal grooves of the corresponding 4 or 6 comfortable self-locking brackets, and two ends of the correction archwire respectively penetrate into the buccal tube cavities of the corresponding 2 comfortable buccal tubes; the self-locking sliding cover slides to be connected with the upper supporting wing to lock the horizontal groove so as to clamp the correction arch wire in the corresponding 4 or 6 comfortable self-locking supporting grooves.

Further, the comfortable buccal tube comprises a buccal tube bottom plate and a buccal tube main body arranged on the buccal tube bottom plate, wherein a buccal tube lumen is arranged in the buccal tube main body; the blind end face of the buccal tube main body is a cambered surface; a traction hook is arranged on the side surface of the buccal tube main body.

Further, the buccal tube lumen penetrates through two ends of the buccal tube main body, or the blind end of the buccal tube main body is of a solid structure, the other end of the buccal tube main body is of a hollow structure, and the buccal tube lumen is arranged in the hollow structure.

The utility model has the following beneficial effects:

1. The bracket main body of the comfortable self-locking bracket is provided with the self-locking sliding cover, and the horizontal groove can be locked by sliding the self-locking sliding cover to be connected with the upper bracket wing, so that the self-locking function is realized, and the appliance archwire in the horizontal groove is prevented from falling off;

2. When the self-locking sliding cover slides to be connected with the upper supporting wing, the top end face and the peripheral side face of the supporting groove main body which are formed by the upper supporting wing, the lower supporting wing and the self-locking sliding cover are cambered surfaces or spherical surfaces, after the comfortable self-locking supporting groove is adhered and fixed on the surface of the incisor through the supporting groove bottom plate, the top end face and the peripheral side face of the supporting groove main body face towards the labial mucosa and are in direct contact with the labial mucosa, and the cambered surfaces or the spherical surfaces are adopted, so that the top end face and the peripheral side face of the supporting groove main body are not easy to scratch the labial mucosa of a patient;

3. The bracket main body adopts an upper wing design and a lower wing design, and the annular groove is formed in the periphery of the bottom of the bracket main body, when the bracket is used, the correction arch wire is embedded into the horizontal groove between the upper supporting wing and the lower supporting wing, then the self-locking sliding cover slides to be connected with the upper supporting wing to lock the horizontal groove, so that the correction arch wire in the horizontal groove is prevented from falling off, the correction arch wire is not required to be fixed by another steel wire ligature wire, and the patient is safer and more comfortable in the treatment process.

Drawings

Fig. 1 is a schematic structural view of a comfortable self-locking bracket provided by the utility model when opened.

Fig. 2 is a schematic structural diagram of the comfortable self-locking bracket according to the present utility model.

Fig. 3 is a schematic view of a vertical section and a horizontal section of a self-locking bracket for maxillary central incisors.

Fig. 4 is a schematic view of a vertical section and a horizontal section of a self-locking bracket for maxillary side incisors according to the present utility model.

Fig. 5 is a schematic view of a vertical section and a horizontal section of a mandibular incisor self-locking bracket provided by the present utility model.

Fig. 6 is a schematic view of a vertical section and a horizontal section of a universal self-locking bracket according to the present utility model.

Fig. 7 is a schematic wearing view of the composite device for early childhood orthodontic treatment provided by the utility model.

Fig. 8 is a schematic structural view of a comfortable buccal tube according to the present utility model.

Fig. 9 is a schematic horizontal cross-section of a comfortable buccal tube provided by the present utility model.

Fig. 10 is a schematic horizontal cross-sectional view of another comfortable buccal tube provided by the present utility model.

Fig. 11 is a schematic vertical cross-section of a comfortable buccal tube provided by the utility model.

Detailed Description

The present utility model is described in detail below with reference to the drawings and the embodiments, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", or a third "may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "disposed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, or can be communicated between two elements or the interaction relationship between the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

As shown in fig. 1 and 2, a comfortable self-locking bracket comprises a bracket bottom plate 101 and a bracket main body 102 arranged on the bracket bottom plate 101, wherein an annular groove 107 surrounding the axis of the bracket main body 102 is arranged on the bottom of the bracket main body 102, a horizontal groove 106 is arranged on the top of the bracket main body 102, and the horizontal groove 106 divides the bracket main body 102 into an upper bracket wing 103 and a lower bracket wing 104; the lower support wing 104 is provided with a slidable self-locking sliding cover 105, the self-locking sliding cover 105 locks the horizontal groove 106 when sliding close to the upper support wing 103, and the self-locking sliding cover 105 opens the horizontal groove 106 when sliding far away from the upper support wing 103.

The bracket main body 102 of the comfortable self-locking bracket of the patent is provided with the self-locking sliding cover 105, the self-locking sliding cover 105 can be slid to be connected with the upper bracket wing 103 to lock the horizontal groove 106, so that the self-locking function is realized, the appliance archwire 300 in the horizontal groove 106 is prevented from falling off, the bracket main body 102 adopts an upper wing design and a lower wing design, the annular groove 107 is arranged on the periphery of the bottom of the bracket main body 102, when the self-locking bracket is used, the appliance archwire 300 is firstly embedded into the horizontal groove 106 between the upper bracket wing 103 and the lower bracket wing 104, then the self-locking sliding cover 105 is slid to be connected with the upper bracket wing 103 to lock the horizontal groove 106, the appliance archwire 300 in the horizontal groove 106 is prevented from falling off, the appliance archwire 300 is not required to be fixed by another steel wire ligature wire, and the appliance archwire 300 is safer and more comfortable in the treatment process of a patient.

When the self-locking sliding cover 105 slides to be connected with the upper supporting wing 103, the top end surface 108 and the peripheral side surface 109 of the bracket main body 102, which are formed by the upper supporting wing 103, the lower supporting wing 104 and the self-locking sliding cover 105 together, are plane, cambered surface or spherical surface.

When the self-locking sliding cover 105 slides to be connected with the upper supporting wing 103, the top end face 108 and the peripheral side face 109 of the supporting groove main body 102 formed by the upper supporting wing 103, the lower supporting wing 104 and the self-locking sliding cover 105 are flat, cambered or spherical, after the comfortable self-locking supporting groove is adhered and fixed on the incisor surface through the supporting groove bottom plate 101, the top end face 108 and the peripheral side face 109 of the supporting groove main body 102 face towards the labial mucosa and are in direct contact with the labial mucosa, and as the flat, cambered or spherical design is adopted, the top end face 108 and the peripheral side face 109 of the supporting groove main body 102 are not easy to scratch the labial mucosa of a patient, especially when the top end face 108 and the peripheral side face 109 of the supporting groove main body 102 formed by the upper supporting wing 103, the lower supporting wing 104 and the self-locking sliding cover 105 are cambered or spherical, the edge of the connecting top end face 108 and the peripheral side face 109 can also prevent the labial mucosa of a patient from being scratched.

In use, according to the condition of a patient, 4 or 6 comfortable self-locking brackets are adhered and fixed on the surfaces of the maxillary central incisors and the maxillary side incisors of the patient, and the other 4 or 6 comfortable self-locking brackets are adhered and fixed on the surfaces of the mandibular incisors of the patient, then one orthodontic archwire 300 is sequentially placed in 4 or 6 comfortable self-locking bracket slots on the teeth such as the maxillary central incisors and the maxillary side incisors, and after the self-locking sliding cover 105 is slid to be connected with the upper supporting wings 103 to lock the horizontal slots 106, the orthodontic archwire 300 in the horizontal slots 106 is prevented from falling off; and after another orthodontic archwire 300 is sequentially placed in 4 or 6 comfortable self-locking bracket slots on teeth such as mandibular central incisors and mandibular side incisors, the self-locking sliding cover 105 is slid to be connected with the upper supporting wing 103 to lock the horizontal slot 106, so that the orthodontic archwire 300 in the horizontal slot 106 is prevented from falling off.

A sliding cover groove 110 is formed in the lower support wing 104, the axial direction of the sliding cover groove 110 is perpendicular to the horizontal groove, and a sliding cover connecting groove 111 for sliding the self-locking sliding cover 105 into connection is formed in one side of the upper support wing 103 facing the lower support wing 104; the self-locking sliding cover 105 is assembled and accommodated in the sliding cover groove 110, first limit sliding grooves 112 are formed in the inner walls of the two sides of the sliding cover groove 110, limit sliding blocks 113 matched with the first limit sliding grooves 112 are arranged on the outer walls of the two sides of the self-locking sliding cover 105, and the limit sliding blocks 113 are embedded into the corresponding first limit sliding grooves 112; second limit sliding grooves (not shown) are formed in the inner walls of the two sides of the sliding cover connecting groove 111, and when the self-locking sliding cover 105 slides into the sliding cover connecting groove 111, the limit sliding blocks 113 are embedded into the corresponding second limit sliding grooves.

An unlocking groove 114 is further formed in the top of one side of the sliding cover connecting groove 111 away from the self-locking sliding cover 105, when the self-locking sliding cover 105 slides into the sliding cover connecting groove 111 to be connected with the upper supporting wing 103, the unlocking groove 114 is exposed between the upper supporting wing 103 and the self-locking sliding cover 105, when unlocking, a hook device or a needle device can be adopted to extend into the unlocking groove 114, and the self-locking sliding cover 105 is pushed out towards the direction of the lower supporting wing 123 by utilizing the hook device or the needle device, so that the self-locking sliding cover 105 slides out of the sliding cover connecting groove 111 to be far away from the upper supporting wing 103, and finally the horizontal groove 106 is opened.

The orthographic projection of the bracket main body 102 on the bracket bottom plate 101 does not exceed the range of the bracket bottom plate 101, the bracket bottom plate 101 is a semicircular plate or a semi-elliptical plate, and the bottom surface of the bracket bottom plate is matched with the surface shape of the maxillary middle incisors, the maxillary side incisors or the mandibular incisors, and can be a plane bottom surface or a cambered bottom surface.

The bottom surface of the bracket bottom plate 101 is provided with grid grooves, so that when the adhesive is used for being adhered and fixed with the surfaces of the maxillary central incisors, the maxillary side incisors or the mandibular incisors, the contact filling area between the adhesive and the bracket bottom plate 101 is increased, and the adhesive force is improved.

Specifically, the comfortable self-locking bracket is divided into four bracket types of a maxillary central incisor self-locking bracket 100a, a maxillary lateral incisor self-locking bracket 100b, a mandibular incisor self-locking bracket 100 and a universal self-locking bracket 100d, wherein the maxillary central incisor self-locking bracket 100a is specially used for being adhered and fixed on the surface of the maxillary central incisor, the maxillary lateral incisor self-locking bracket 100b is specially used for being adhered and fixed on the surface of the maxillary lateral incisor, the mandibular incisor self-locking bracket 100 is specially used for being adhered and fixed on the surface of the mandibular incisor, and the universal self-locking bracket 100d is then used for replacing the maxillary central incisor self-locking bracket 100a, the maxillary lateral incisor self-locking bracket 100b and the mandibular incisor self-locking bracket 100 under special conditions.

The lengths of the upper jaw middle incisor self-locking bracket 100a, the upper jaw side incisor self-locking bracket 100b and the universal self-locking bracket 100d are larger than the widths thereof, and the overall shape is biased to be thick and flat oval or semi-oval; while the length of the mandibular incisor self-ligating bracket 100 is less than its width, the overall shape is biased toward an elongated oval or semi-oval shape.

In addition, the bracket bottom plates 101 of the upper jaw middle incisor self-locking bracket 100a, the upper jaw side incisor self-locking bracket 100b and the lower jaw incisor self-locking bracket 100 adopt planar bottom surfaces, and the bracket bottom plate 101 of the universal self-locking bracket 100d adopts cambered bottom surfaces.

As shown in fig. 3, the height Ha of the self-locking bracket 100a for incisors in the upper jaw is 2mm, the bottom surface of the bracket bottom plate 101 is a plane, the length La of the bracket bottom plate 101 is 4mm, the width Da is 3mm, the length Ka of the horizontal groove 106 is 3mm, the width Ga is 0.018 inch, the depth Fa is 0.025 inch, the width Ea of the annular groove 107 is 1mm, and the depth Ja is 0.9mm.

As shown in fig. 4, the height Hb of the self-locking bracket 100b for maxillary incisors is 2mm, the bottom surface of the bracket base plate 101 is a plane, the length Lb of the bracket base plate 101 is 3.5mm, the width Db is 3mm, the length Kb of the horizontal groove 106 is 3mm, the width Gb is 0.018 inch, the depth Fb is 0.025 inch, the width Eb of the annular groove 107 is 1mm, and the depth Jb is 0.9mm.

As shown in fig. 5, the height Hc of the mandibular incisor self-locking bracket 100c is 2mm, the bottom surface of the bracket bottom plate 101 is a concave arc surface, the length Lc of the bracket bottom plate 101 is 3mm, the width Dc is 3.5mm, the length Kc of the horizontal groove 106 is 2mm, the width Gc is 0.018 inch, the depth Fc is 0.025 inch, the width Ec of the annular groove 107 is 1mm, and the depth Jc is 1mm.

As shown in fig. 6, the height Hd of the universal self-locking bracket 100d is 2mm, the length Ld and the width Dd of the bracket bottom plate 101 are 3.5mm and 4mm, the length Kd, the width Gd and the depth Fd of the horizontal groove 106 are 3mm, 0.018 inch and 0.025 inch, respectively, and the width Ed and the depth Jd of the annular groove 107 are 1mm and 1mm, respectively.

Of course, the specific dimensions of the four bracket types may be slightly reduced or increased based on the dimensions described above, and should not be limited thereto.

Example two

As shown in fig. 7, a composite device for early childhood orthodontic treatment comprises a maxillary portion and a mandibular portion, the maxillary portion and mandibular portion comprising 4 or 6 embodiments of a comfortable self-ligating bracket 100, 2 comfortable buccal tubes 200, and an orthodontic archwire 300, respectively; the correction archwire 300 is sequentially embedded into the horizontal grooves 106 of the corresponding 4 or 6 comfortable self-locking brackets, and two ends of the correction archwire penetrate into the buccal tube lumens 222 of the corresponding 2 comfortable buccal tubes 200 respectively; the self-locking sliding cover 105 slides to be connected with the upper supporting wing 103 to lock the horizontal groove 106, and the correction archwire 300 is clamped in the corresponding 4 or 6 comfortable self-locking supporting grooves 100, so that the correction archwire 300 in the horizontal groove 106 is prevented from falling off.

As shown in fig. 8, the comfortable buccal tube 200 includes a buccal tube base 210 and a buccal tube main body 220 disposed on the buccal tube base 210, wherein the buccal tube main body 220 has a buccal tube lumen 222 therein; the blind end surface 221 of the buccal tube main body 220 is a cambered surface.

The blind end surface 221 of the buccal tube main body 220 of the comfortable buccal tube 200 of the patent adopts an arc surface design, after the comfortable buccal tube 200 is adhered and fixed on the molar surface through the buccal tube bottom plate 210, the blind end surface 221 of the buccal tube main body 220 faces towards the buccal mucosa and is in direct contact with the buccal mucosa, and due to the adoption of the arc surface design, the blind end surface of the buccal tube main body 220 is not easy to scratch the buccal mucosa of a patient.

The buccal tube body 220 has a buccal tube lumen 222 therein, and the ligature-completed orthodontic archwire 300 is threaded into the buccal tube body 220 through the buccal tube lumen 222.

In this embodiment, the length Lz of the buccal tube bottom plate 210 is 6mm, the width Dz is 3mm, the length Lx of the buccal tube main body 220 is 5mm, the width Dx is 1mm, the height Hx is 1mm, the width Dy of the buccal tube lumen 233 is 0.64mm, and the height Hy is 0.46mm.

As shown in fig. 9, the buccal tube lumen 222 may extend through both ends of the buccal tube main body 220, the orthodontic archwire 300 may be inserted into the buccal tube main body 220 from one end of the buccal tube lumen 222, and the orthodontic archwire 300 may be inserted out of the buccal tube main body 220 from the other end of the buccal tube lumen 222, so as to facilitate the doctor to adjust the orthodontic archwire 300.

Or as shown in fig. 10, the blind end of the buccal tube main body 220 may be a solid structure 223, and the other end is a hollow structure 224, and the buccal tube lumen 222 is disposed in the hollow structure 224, and after the ligature orthodontic wire 300 penetrates into the hollow structure 222 of the buccal tube main body 220, the ligature orthodontic wire 300 is blocked by the solid structure 221 of the buccal tube main body 220 and is not exposed out of the buccal tube main body 220, so that the orthodontic wire 300 can be prevented from scratching the labial mucosa of a patient.

The length of the hollow structure 222 is greater than the length of the solid structure 221, in this embodiment, the length of the solid structure 221 is 1mm, and the length of the hollow structure 222 is 4mm.

As shown in fig. 11, a traction hook 230 is disposed on a side surface of the buccal tube main body 220, the traction hook 230 includes a connection post 231 and a sphere or ellipsoid 232, one end of the connection post 231 is connected with the buccal tube main body 220, and the other end of the connection post 231 is connected with the sphere or ellipsoid 232.

In this embodiment, the length Lw of the connecting post 231 is 0.3mm, the diameter Dw is 0.2mm, the diameter Dv of the sphere or ellipsoid 232 is 0.8mm, and the distance Lv between the center of the towing hook 230 and the inlet end of the hollow structure 222 is 1.5mm.

Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the embodiments of the present utility model and are not intended to limit the embodiments of the present utility model, and although the embodiments of the present utility model have been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the embodiments of the present utility model may be modified or replaced with the same, and the modified or replaced technical solution may not deviate from the scope of the technical solution of the embodiments of the present utility model.

Claims (7)

1. The comfortable self-locking bracket comprises a bracket bottom plate and a bracket main body arranged on the bracket bottom plate, wherein an annular groove surrounding the axis of the bracket main body is arranged at the bottom of the bracket main body, a horizontal groove is arranged at the top of the bracket main body, and the bracket main body is divided into an upper bracket wing and a lower bracket wing by the horizontal groove; the self-locking sliding cover is characterized in that a slidable self-locking sliding cover is arranged on the lower support wing, the horizontal groove is locked when the self-locking sliding cover slides to be close to the upper support wing, and the horizontal groove is opened when the self-locking sliding cover slides to be far away from the upper support wing;

When the self-locking sliding cover slides to be connected with the upper supporting wing, the top end surface and the peripheral side surface of the bracket main body which are formed by the upper supporting wing, the lower supporting wing and the self-locking sliding cover are planes, cambered surfaces or spherical surfaces; a sliding cover connecting groove for the self-locking sliding cover to slide into and be connected with is formed on one side of the upper supporting wing facing the lower supporting wing;

The lower support wing is provided with a sliding cover groove, the axial direction of the sliding cover groove is perpendicular to the horizontal groove, and the self-locking sliding cover is assembled and accommodated in the sliding cover groove; the self-locking sliding cover is characterized in that first limiting sliding grooves are formed in the inner walls of the two sides of the sliding cover groove, limiting sliding blocks matched with the first limiting sliding grooves are arranged on the outer walls of the two sides of the self-locking sliding cover, and the limiting sliding blocks are embedded into the corresponding first limiting sliding grooves.

2. The comfortable self-locking bracket of claim 1, wherein second limit sliding grooves are formed in inner walls of two sides of the sliding cover connecting groove, and when the self-locking sliding cover slides into the sliding cover connecting groove, the limit sliding blocks are embedded into the corresponding second limit sliding grooves.

3. The comfortable self-locking bracket of claim 1, wherein the top of one side of the sliding cover connecting groove away from the self-locking sliding cover is further provided with an unlocking groove, or/and the bottom surface of the bracket bottom plate is provided with a grid groove.

4. The comfortable self-ligating bracket of claim 1, wherein the comfortable self-ligating bracket is divided into four bracket types of a maxillary central incisor self-ligating bracket, a maxillary lateral incisor self-ligating bracket, a mandibular incisor self-ligating bracket, and a universal self-ligating bracket, wherein the maxillary central incisor self-ligating bracket, the maxillary lateral incisor self-ligating bracket, and the universal self-ligating bracket have a length greater than a width thereof, and the mandibular incisor self-ligating bracket has a length less than a width thereof; the upper jaw middle incisor self-locking bracket, the upper jaw side incisor self-locking bracket and the lower jaw self-locking bracket adopt plane bottom surfaces, and the bracket bottom plate of the universal self-locking bracket adopts cambered surface bottom surfaces.

5. An early childhood dental correction composite device comprising a maxillary portion and a mandibular portion, the maxillary portion and mandibular portion comprising 4 or 6 comfortable self-ligating brackets of claim 1, 2 comfortable buccal tubes, and an orthodontic archwire, respectively; the correction archwire is sequentially embedded into the horizontal grooves of the corresponding 4 or 6 comfortable self-locking brackets, and two ends of the correction archwire respectively penetrate into the buccal tube cavities of the corresponding 2 comfortable buccal tubes; the self-locking sliding cover slides to be connected with the upper supporting wing to lock the horizontal groove so as to clamp the correction arch wire in the corresponding 4 or 6 comfortable self-locking supporting grooves.

6. The composite child early dental correction apparatus of claim 5, wherein the comfortable buccal tube comprises a buccal tube base and a buccal tube body disposed on the buccal tube base, the buccal tube body having a buccal tube lumen therein; the blind end face of the buccal tube main body is a cambered surface; a traction hook is arranged on the side surface of the buccal tube main body.

7. The composite device of claim 6, wherein the buccal tube lumen extends through both ends of the buccal tube body, or the blind end of the buccal tube body is a solid structure, and the other end is a hollow structure, and the buccal tube lumen is arranged in the hollow structure.