CN212015824U - Full-ceramic passive self-locking bracket for tooth orthodontics with lock catch type narrow groove and wide wing - Google Patents

Abstract

A latch type narrow-groove wide-wing all-ceramic passive self-locking bracket for tooth orthodontics comprises a bonding bottom plate, a groove body connected with the bonding bottom plate, a cover plate used for covering a groove, a locking structure used for controlling the opening and closing of the cover plate and a positioning scale used for positioning the bracket; the groove arranged on the groove body consists of a straight section and an 'outer splayed' section connected with two ends of the straight section, so that the effective length of the groove is narrowed, and the bracket has the advantages of a self-locking wide-wing bracket and a self-locking narrow-wing bracket; the locking structure comprises an avoiding groove and a lock catch hole which are arranged on one side wall of the groove, an unlocking opening which is arranged on the other side wall of the groove, and a guide-in inclined plane, an anti-falling platform, an unlocking hole, a cover closing hole and an elastic steel bar which are arranged on the bottom surface of the cover plate, so that the cover plate is simple and convenient to open and close; the bonding bottom plate, the groove body and the cover plate are all made of ceramic materials with the color close to or semitransparent with the tooth color, and after the cover plate and the groove body are combined, the elastic steel bar is covered by the cover plate, so that the full invisibility of the bracket is realized during treatment.

Description

Full-ceramic passive self-locking bracket for tooth orthodontics with lock catch type narrow groove and wide wing

Technical Field

The utility model belongs to the technical field of orthodontic appliances, in particular to a passive self-ligating bracket for tooth orthodontics.

Background

The invisible braces and the orthodontic brackets are appliances for orthodontic use, and although the invisible braces can meet aesthetic requirements of orthodontic patients in the orthodontic process, the accuracy control in tooth movement can not be comparable with the effects of fixed appliances such as orthodontic brackets and the like.

In order to take account of the orthodontic effect of teeth and the aesthetic requirements of orthodontic patients, ceramic passive self-locking brackets have been developed, but the existing ceramic passive self-locking brackets are of common wide-wing bracket structures and wide-wing self-locking structures, a metal cover plate is adopted in a self-locking mode, an anti-falling device is inserted from the bottom after the brackets are covered, and finally holes are sealed at the bottom. Therefore, the aesthetic and invisible effects required by clinical patients are difficult to achieve, and the cover plate is inconvenient to install.

The orthodontic bracket can be divided into a wide-wing bracket and a narrow-wing bracket according to the width of the bracket. The support groove width that the wide wing held in the palm the groove is great, and the interval between the groove is less, is favorable to rotation control, but its elasticity of correcting the arch wire production is less, and frictional force is that narrow wing holds in the palm 1 ~ 1.5 times in the groove, is unfavorable for reducing the frictional force of correcting the ware in the leveling stage of lining up, and then can not effectual removal tooth and protection anchorage. The narrow-wing brackets have small bracket width and large spacing, and although the generated small friction force is favorable for transferring light force and aligning, the small bracket width has insufficient control on the twisted teeth and the inclined teeth, and single-wing ligation can not be selectively performed according to the twisting or inclined degree. The self-ligating bracket is a structure which is provided with a bracket cover and limits an arch wire in a working groove, is used clinically at present, and has a plurality of patent applications about the self-ligating bracket, and as for the disclosed self-ligating bracket, no matter whether the self-ligating bracket is an active type or a passive type, the groove is a straight type, namely, the inner wall surfaces of two side walls of the whole groove are parallel to each other, so that the angulation resistance of the bracket and the arch wire can not be effectively reduced when teeth move, the deformation of the arch wire is reduced, the advantages of a wide-wing bracket and a narrow-wing bracket are difficult to combine, the requirements of quickly aligning and leveling dentition in the initial stage of orthodontic treatment, early using a full-size arch wire and effectively controlling rotation can not be met simultaneously, and the.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a passive self-ligating bracket of full pottery is just abnormal with of tooth of the narrow groove wide wing of hasp formula, so that can realize holding in the palm the groove stealthy, simplify the apron installation operation, can hold in the palm groove and wide wing again and combine together, can satisfy simultaneously at just abnormal treatment initial stage fast and arrange the flattening dentition, use full-size arch wire as early as possible, the rotatory requirement of effective control, the later stage of correcting can provide great frictional force and is favorable to the control of tooth torque.

The utility model discloses a lock catch type narrow groove wide wing full ceramic passive self-locking bracket for tooth orthodontics, which comprises a bonding bottom plate, a groove body and a cover plate which are made of ceramic materials with the color close to or semitransparent with the color of teeth, a locking structure for controlling the opening and closing of the cover plate, and a positioning scale for positioning the bracket; the groove body is provided with a groove and ligation wings and is connected with the bonding bottom plate, and the groove consists of a straight section and an outer splayed section connected with two ends of the straight section; two parallel guide grooves for mounting a cover plate are arranged on one side wall of the groove, the guide grooves are perpendicular to the center line of the groove, a concave avoidance groove is arranged on the wall surface between the two guide grooves, one end of the avoidance groove is communicated with the groove, the other end of the avoidance groove is provided with a lock catch hole, and the lock catch hole is a blind hole; the top surface of the other side wall of the groove is provided with a cover plate supporting surface and an unlocking opening, the cover plate supporting surface is connected with the inner wall surface of the groove, and the unlocking opening is positioned behind the cover plate supporting surface; the two sides of the top surface of the cover plate are provided with sliding strips combined with the guide grooves, the front end of the bottom surface of the cover plate is provided with a guide-in inclined surface, an anti-falling platform, an opening-cover locking hole and a closing-cover locking hole are sequentially arranged behind the guide-in inclined surface, the opening-cover locking hole and the closing-cover locking hole are blind holes with the same depth, the central lines of the opening-cover locking hole and the closing-cover locking hole are on the same straight line, the two holes are communicated through a channel, the table surface of the anti-falling platform is lower than the bottom surface of the cover plate, the distance h1 between the table surface of the anti-falling platform and the bottom surface of the cover plate is smaller than the depth h2 of the opening-cover locking hole and the closing-cover locking hole (the guide-in inclined surface, the opening-cover locking hole, the closing-; the locking structure that the control apron was opened and was closed is by a groove lateral wall setting dodge groove and hasp hole, another lateral wall of groove sets up the fore shaft, the apron bottom surface sets up leading-in inclined plane, anticreep platform, the lockhole of uncapping, close the lid lockhole, the intercommunication is closed the lid lockhole and is uncapped the passageway and the elasticity rod iron of lockhole and constitute, elasticity rod iron cartridge is in the hasp hole, and when free state, the hasp hole is stretched out on the top of elasticity rod iron.

The utility model discloses a lock catch type narrow groove wide wing all ceramic passive self-locking bracket for tooth orthodontics, the straight section length (also called as the effective length of the groove) of the groove is controlled at 1.8 mm-2.4 mm, the length of the outer splayed section connected at the two ends can be equal or unequal, but the optimal length is equal and is controlled at 0.2 mm-0.6 mm; the included angles of the inner wall surfaces of the two side walls of the outer splayed sections connected with the two ends of the straight section are the same and are controlled to be 7-80 degrees.

The utility model discloses a tooth orthodontics of narrow groove wide wing of hasp formula is with passive self-ligating bracket of full pottery, the side that its bonding bottom plate is located the groove both ends is the inclined plane, and the angle of inclination beta on this inclined plane is 30 ~ 60 to hold in the palm the getting rid of in the groove.

The utility model discloses a lock catch type narrow groove wide wing all-ceramic passive self-locking bracket for tooth orthodontics, which controls the cover plate to open and close in a locking structure, the diameter of the elastic steel bar is 0.2 mm-0.4 mm, and the aperture of a lock catch hole is matched with the diameter of the elastic steel bar (in movable fit); the hole sizes of the cover opening lock hole and the cover closing lock hole and the width of a channel for communicating the cover opening lock hole and the cover closing lock hole are larger than the diameter of the elastic steel bar, the distance between the outer side wall of the cover opening lock hole and the outer side wall of the cover closing lock hole is a cover opening distance, and the cover opening distance d is the size which can enable the groove to be completely exposed when the cover is opened; the inclination angle theta of the leading-in inclined plane is 10-60 degrees.

The utility model discloses a lock catch type all-ceramic passive self-locking bracket for tooth orthodontics with narrow groove and wide wing, wherein a positioning scale is composed of a central shaft and a clamping seat; the central shaft is a square shaft, two ends of the central shaft are lower than the middle section to form a step shape, one end lower than the middle section is an occlusal square, the other end lower than the middle section is a gingival square, the occlusal square is parallel to the middle section, three scale marks are arranged on the occlusal square, the end part of the gingival square is a positioning mark, the end part of the gingival square inclines in the buccal direction relative to the middle section, and the inclination angle is determined (generally 5-30 degrees) by avoiding the contour high point of the neck of the tooth and the gingival margin; the clamping seat is arranged at the middle section of the central shaft and is of an integrated structure with the middle section, the axis of the clamping seat is vertical to that of the middle section, the top surface of the clamping seat and the top surface of the middle section are positioned on the same plane, and the shape and the size of the clamping seat are matched with those of the groove; when the bracket is positioned, the clamping seat is clamped into a groove arranged on the groove body.

The tooth of the narrow groove of hasp formula wide wing is just abnormal with passive self-ligating bracket of full pottery, its apron top surface is provided with the first axis that is used for holding in the palm the groove location on a parallel with the central line position of draw runner, and the lateral wall top surface that its groove was provided with the unlocking notch is provided with the second axis that corresponds with the first axis of apron top surface, and first axis and second axis are linear type protruding structure, and they constitute the positioner who holds in the palm the groove jointly with the location scale.

The utility model discloses a tooth of narrow groove wide wing of hasp formula is just abnormal with passive self-ligating bracket of full pottery, the usable elasticity stainless steel of elasticity rod iron and the preparation of medical nickel titanium alloy in its locking structure, the usable medical silica gel of positioning scale or rubber preparation.

The utility model discloses following beneficial effect has:

1. because bonding bottom plate, cell body and the apron of passive self-ligating bracket all use the pottery or the translucent material preparation that are close with the tooth colour, after apron and cell body combination, the elasticity steel rod in the locking structure that the control apron was opened and was closed is covered by the apron, consequently, has realized during the treatment holding in the palm the complete stealthy in groove, can satisfy the just abnormal patient of tooth and correct the aesthetic demand of in-process.

2. The locking structure that control apron was opened and was closed among the passive self-ligating bracket of complete pottery has guaranteed opening and closing easy and simple to handle of apron, promotes the apron and slides and to realize opening and closing of apron.

3. Because the groove of passive self-ligating bracket of full pottery comprises "outer eight characters" section that straight section and straight section both ends link up, therefore both had the frame that the wide wing held in the palm the groove, make the effective length of groove narrow down again to the advantage that has had the wide wing of self-ligating to hold in the palm groove and narrow wing to hold in the palm the groove has concurrently, can satisfy simultaneously at just abnormal treatment initial stage and arrange the flattening dentition fast, use full-size arch wire early, the rotatory requirement of effective control, the later stage of correcting can provide great frictional force and be favorable to the control of tooth torque.

4. Because the central shaft in the positioning scale is step-shaped, and the end part of the gum side inclines in the buccal direction relative to the middle section of the central shaft,

the square is provided with scale marks, and the first central axis, the second central axis and the positioning scale are matched, so that the bracket is positioned more simply and quickly and is positioned more accurately.

5. The side surfaces of the bonding bottom plate, which are positioned at the two ends of the groove, are inclined surfaces, so that the bracket is convenient to remove.

Drawings

FIG. 1 is a schematic structural view of a latch-type narrow-slot wide-wing all-ceramic passive self-ligating bracket for tooth orthodontics according to the present invention, wherein a cover plate is in a closed state, and a slot is in a closed state;

FIG. 2 is a schematic structural view of the latch-type narrow-slot wide-wing all-ceramic passive self-ligating bracket for dental orthodontics shown in FIG. 1 with the cover plate removed;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a right side view of FIG. 2, with the resilient steel rod inserted into the latch hole of FIG. 2;

FIG. 5 is a top view of FIG. 2;

FIG. 6 is a schematic structural view of a groove in a latch-type narrow-groove wide-wing full-ceramic passive self-ligating bracket for tooth orthodontics according to the present invention;

FIG. 7 is a schematic top view of a cover plate of a latch-type narrow-slot wide-wing fully ceramic passive self-ligating bracket for orthodontics according to the present invention;

FIG. 8 is a schematic view of the bottom surface structure of the cover plate in the latch-type narrow-slot wide-wing full-ceramic passive self-ligating bracket for orthodontics of the present invention;

FIG. 9 is a schematic sectional view A-A of FIG. 8;

fig. 10 is a schematic structural view of a positioning scale in the latch-type narrow-groove wide-wing full-ceramic passive self-locking bracket for tooth orthodontics of the present invention.

FIG. 11 is a schematic view of a combination of a positioning scale and a groove in bracket positioning.

In the figure, 1-a bonding bottom plate, 1-a slope, 2-a groove body, 2-1-a guide groove, 2-an unlocking opening, 2-3-a ligation wing, 2-4-a locking hole, 2-4-1-an elastic steel bar, 2-5-an avoiding groove, 2-6-a cover plate supporting surface, 3-a cover plate, 3-1-a sliding strip, 3-2-an unlocking hole, 3-a closing locking hole, 3-4-an anti-falling platform, 3-5-a leading-in slope, 4-a groove, 4-1-an outer splayed section, 4-2-a straight section, 5-a positioning scale, 5-1-a central shaft, 5-1-1 scale marks, 5-1-2 positioning marks, 5-1-3-a clamping seat, 5-2-a clamping seat, 6-a first central shaft wire axis, 7-second median axis.

Detailed Description

The following describes the latch-type narrow-slot wide-wing all-ceramic passive self-ligating bracket for tooth orthodontics according to the present invention with reference to the accompanying drawings.

In this embodiment, the structure of the all-ceramic passive self-ligating bracket for orthodontics with locking type narrow groove and wide wing is shown in fig. 1, fig. 2, fig. 3, fig. 4 and fig. 5, and includes an adhesive base plate 1, a groove body 2 connected with the adhesive base plate, a cover plate 3 combined with the groove body and used for covering the groove, a locking structure for controlling the opening and closing of the cover plate, and a positioning scale 5 for positioning the bracket.

As shown in fig. 2, 3, 4 and 5, the trough body 2 is provided with a trough 4 for mounting an arch wire, and the outer edges of two ends of two side walls of the trough 4 are respectively provided with ligation wings 2-3; one side wall of the groove is provided with two parallel guide grooves 2-1 of a drawer type structure, and the two parallel guide grooves are used for installing a cover plate 3, so that the cover plate can slide along the guide grooves 2-1 like a drawer, the guide grooves 2-1 are vertical to the central line of the groove 4, a concave avoidance groove 2-5 is arranged on the wall surface between the two guide grooves, one end of the avoidance groove 2-5 is communicated with the groove, the other end of the avoidance groove 2-5 is provided with a lock catch hole 2-4, and the lock catch hole 2-4 is a blind hole; the top surface of the other side wall of the groove is provided with a cover plate supporting surface 2-6 and an unlocking opening 2-2, the cover plate supporting surface 2-6 is connected with the inner wall surface of the groove, and the unlocking opening 2-2 is positioned behind the cover plate supporting surface (2-6).

The groove 4 arranged on the groove body is composed of a straight section 4-2 and an outer splayed section 4-1 connected with two ends of the straight section, as shown in fig. 5 and 6, the length L2 of the straight section 4-2 is 2.2mm, the length of the outer splayed section 4-1 connected with two ends of the straight section is equal, L3 is 0.4mm, the total length L1 of the groove is 3.0mm, and included angles of inner wall surfaces of two side walls of the outer splayed section connected with two ends of the straight section are the same, and alpha is 50 degrees.

As shown in fig. 1, 7, 8 and 9, the cover plate 3 is provided with a slide bar 3-1 combined with the guide groove 2-1 at two sides of the top surface, a guide inclined surface 3-5 is arranged at the front end of the bottom surface, an anti-falling platform 3-4, an open cover lock hole 3-2 and a close cover lock hole 3-3 are sequentially arranged behind the guide inclined surface, the open cover lock hole 3-2 and the close cover lock hole 3-3 are blind holes with the same depth, the central lines of the blind hole 3-2 and the close cover lock hole 3-3 are on the same straight line and are communicated with each other through a channel, the table top of the anti-falling platform 3-4 is lower than the bottom surface of the cover plate, and the distance h1 between the table top of the anti-falling platform 3-4 and the bottom surface of the cover plate is smaller than the depth.

The locking structure for controlling the opening and closing of the cover plate is shown in figures 4, 5, 8 and 9 and consists of an evading groove 2-5 and a lock catch hole 2-4 which are arranged on one side wall of a groove, an opening lock opening 2-2 which is arranged on the other side wall of the groove, a guide-in inclined plane 3-5 which is arranged on the bottom surface of the cover plate 3, an anti-falling platform 3-4, an opening cover lock hole 3-2, a cover closing lock hole 3-3, a channel for communicating the opening cover lock hole with the closing cover lock hole and the opening cover lock hole, and an elastic steel bar 2-4-1; the diameter of the elastic steel bar 2-4-1 is 0.3mm, and the aperture of the lock catch hole 2-4 is the same as the nominal diameter size of the elastic steel bar 2-4-1 and is in movable fit with the nominal diameter size; the cover opening lock hole 3-2 and the cover closing lock hole 3-3 are rectangular holes with the same size, the length of the holes is 0.6mm, the width of the holes is 0.4mm, the depth h2 is 0.4mm, the width of a channel for communicating the cover opening lock hole and the cover closing lock hole is 0.5mm, and the cover opening distance d is controlled to be 0.42 mm-0.63 mm; the distance h1 between the table top of the anti-falling platform 3-4 and the bottom surface of the cover plate is 0.15mm, and the inclination angle theta of the lead-in inclined plane 3-5 is 25 degrees; the elastic steel bar 2-4-1 is inserted into the lock catch hole 2-4, and in a free state, the top end of the elastic steel bar extends out of the lock catch hole 2-4. After the cover plate is combined with the groove body, the elastic steel bar 2-4-1 is covered by the cover plate; in the process of opening or closing the cover plate, when the anti-falling platform 3-4 and the leading-in inclined plane 3-5 on the bottom surface of the cover plate are contacted with the elastic steel bar 2-4-1, the elastic steel bar is in a compressed state, and when the anti-falling platform 3-4 and the leading-in inclined plane 3-5 on the bottom surface of the cover plate are separated from the elastic steel bar 2-4-1, the elastic steel bar is in a free state; when the cover plate 3 is opened in place and the groove 4 is completely exposed, the elastic steel bar 2-4-1 is in a free state, and the top end of the elastic steel bar extends out of the lock catch hole 2-4 and is positioned in the cover opening lock hole 3-2; when the cover plate 3 is closed in place and the groove 4 is completely closed, the elastic steel bar 2-4-1 is in a free state, and the top end of the elastic steel bar extends out of the lock catch hole 2-4 and is positioned in the lock hole 3-3 of the cover closing; the cover plate can be pushed to open or close.

As shown in fig. 2 and 3, the side surfaces of the adhesive base plate 1 at the two ends of the groove are inclined surfaces 1-1, and the inclination angle β of the inclined surfaces 1-1 is 40 °.

The positioning scale 5 is composed of a central shaft 5-1 and a clamping seat 5-2 as shown in fig. 10 and 11; the central shaft 5-1 is a square shaft, two ends of the central shaft are lower than the middle section 5-1-3 to form a step shape, and one end lower than the middle section is

The other end, which is lower than the middle section, of the gum side is a gum side, the gum side is parallel to the middle section, three scale marks 5-1-1 are arranged on the gum side, the end part of the gum side is a positioning mark 5-1-2, the end part of the gum side inclines in the buccal direction relative to the middle section, and the inclination angle gamma is 20 degrees, so that the central shaft extends to the position below the enamel cementum boundary, and the accurate positioning of the central shaft is facilitated; the clamping seat 5-2 is arranged at the middle section 5-1-3 of the central shaft and is of an integrated structure with the middle section, the axis of the clamping seat 5-2 is vertical to the axis of the middle section 5-1-3, the top surface of the clamping seat 5-2 and the top surface of the middle section 5-1-3 are positioned on the same plane, and the shape and the size of the clamping seat 5-2 and the shape and the size of the groove 4 are respectively arranged on the two sides of the clamping seat 5-2Matching; when the bracket is positioned, the clamping seat 5-2 is clamped into a groove 3 arranged on the groove body (as shown in figure 11).

As shown in fig. 7, a first central axis 6 for bracket positioning is further disposed at a position of the top surface of the cover plate 3 parallel to the central line of the slide bar 3-1, as shown in fig. 1, 2, and 5, a second central axis 7 corresponding to the first central axis 6 of the top surface of the cover plate 3 is further disposed at a top surface of the side wall of the groove where the unlocking opening 2-2 is disposed, and the first central axis 6 and the second central axis 7 are both linear convex structures, and they and the positioning scale form a positioning device for the bracket together.

In the embodiment, the bonding bottom plate 1 is made of alumina ceramic powder with the particle size of 150-; the positioning scale 5 is made of medical silica gel.

The utility model discloses be not limited to above-mentioned embodiment, according to the length scope of the flat straight section of slot and the "outer eight" section and the internal face contained angle scope of the both sides wall of the "outer eight" section that the claim is limited, the angle scope of location scale gum cheek slope, the angle of inclination scope that the bonding bottom plate is located the side at slot both ends etc. can prepare a series of support grooves to satisfy different patients' tooth orthodontic treatment needs.

Claims (10)

1. A latch type narrow groove wide wing full ceramic passive self-locking bracket for tooth orthodontics is characterized by comprising a bonding bottom plate (1), a groove body (2) and a cover plate (3) which are made of ceramic materials with colors close to or semitransparent with teeth, a locking structure for controlling the opening and closing of the cover plate, and a positioning scale (5) for positioning the bracket; the groove body (2) is provided with a groove (4) and tie wings (2-3) and is connected with the bonding bottom plate, and the groove (4) consists of a straight section (4-2) and an outer splayed section (4-1) connected with the two ends of the straight section; two parallel guide grooves (2-1) for mounting a cover plate (3) are arranged on one side wall of each groove, the guide grooves (2-1) are perpendicular to the center line of the groove (4), a concave avoidance groove (2-5) is arranged on the wall surface between the two guide grooves, one end of the avoidance groove (2-5) is communicated with the groove, a lock catch hole (2-4) is arranged at the other end of the avoidance groove (2-5), and the lock catch hole (2-4) is a blind hole; the top surface of the other side wall of the groove is provided with a cover plate supporting surface (2-6) and an unlocking opening (2-2), the cover plate supporting surface (2-6) is connected with the inner wall surface of the groove, and the unlocking opening (2-2) is positioned behind the cover plate supporting surface (2-6);

the sliding strips (3-1) combined with the guide grooves (2-1) are arranged on two sides of the top surface of the cover plate (3), a guide-in inclined plane (3-5) is arranged at the front end of the bottom surface of the cover plate (3), an anti-falling platform (3-4), an uncovering lock hole (3-2) and a closing lock hole (3-3) are sequentially arranged behind the guide-in inclined plane, the uncovering lock hole (3-2) and the closing lock hole (3-3) are blind holes with the same depth, the central lines of the blind holes and the closing lock hole are on the same straight line, the two holes are communicated through a channel, the table top of the anti-falling platform (3-4) is lower than the bottom surface of the cover plate, and the distance (h1) between the table top of the anti-falling platform (3-4) and the bottom surface of the cover plate is smaller than the depth (h;

the locking structure for controlling the cover plate to be opened and closed is composed of an avoiding groove (2-5) and a lock catch hole (2-4) which are formed in one side wall of a groove, an opening lock hole (2-2) which is formed in the other side wall of the groove, a guide-in inclined plane (3-5) which is formed in the bottom surface of the cover plate (3), an anti-falling platform (3-4), an opening lock hole (3-2), a closing lock hole (3-3), a channel for communicating the closing lock hole with the opening lock hole, and an elastic steel rod (2-4-1), wherein the elastic steel rod (2-4-1) is inserted into the lock catch hole (2-4), and the top end of the elastic steel rod extends out of the lock catch hole in a free state.

2. The latch type narrow-groove wide-wing all-ceramic passive self-locking bracket for tooth orthodontics according to claim 1, wherein the length of the groove straight section (4-2) is controlled to be 1.8 mm-2.4 mm, the length of the outer splayed section (4-1) connected with the two ends of the straight section is equal and controlled to be 0.2 mm-0.6 mm, and the included angles of the inner wall surfaces of the two side walls of the outer splayed section connected with the two ends of the straight section are the same and controlled to be 7-80 °.

3. The locking type narrow groove wide wing all-ceramic passive self-ligating bracket for tooth orthodontics according to claim 1 or 2, characterized in that the side surfaces of the adhesive base plate (1) at the two ends of the groove are inclined surfaces (1-1), and the inclination angle (β) of the inclined surfaces (1-1) is 30-60 °.

4. The all-ceramic passive self-ligating bracket for tooth orthodontics with the locking type narrow groove and wide wing according to claim 1 or 2, characterized in that the diameter of the elastic steel bar (2-4-1) is 0.2 mm-0.4 mm, and the aperture of the locking hole (2-4) is matched with the diameter of the elastic steel bar (2-4-1); the hole sizes of the cover opening lock hole (3-2) and the cover closing lock hole (3-3) and the width of a channel for communicating the cover opening lock hole and the cover closing lock hole are larger than the diameter of the elastic steel bar (2-4-1), the distance (d) between the outer side wall of the cover opening lock hole (3-2) and the outer side wall of the cover closing lock hole (3-3) is a cover opening distance, and the size of the cover opening distance is that the groove (4) can be completely exposed when the cover is opened; the angle of inclination (theta) of the lead-in inclined plane (3-5) is 10-60 degrees.

5. The all-ceramic passive self-ligating bracket for tooth orthodontics with the locking type narrow slot and wide wing as claimed in claim 3, wherein the diameter of the elastic steel bar (2-4-1) is 0.2 mm-0.4 mm, and the aperture of the locking hole (2-4) is matched with the diameter of the elastic steel bar (2-4-1); the hole sizes of the cover opening lock hole (3-2) and the cover closing lock hole (3-3) and the width of a channel for communicating the cover opening lock hole and the cover closing lock hole are larger than the diameter of the elastic steel bar (2-4-1), the distance (d) between the outer side wall of the cover opening lock hole (3-2) and the outer side wall of the cover closing lock hole (3-3) is a cover opening distance, and the size of the cover opening distance is that the groove (4) can be completely exposed when the cover is opened; the angle of inclination (theta) of the lead-in inclined plane (3-5) is 10-60 degrees.

6. The all-ceramic passive self-ligating bracket for tooth orthodontics with locking type narrow slot and wide wing according to claim 1 or 2, characterized in that the positioning scale (5) is composed of a central shaft (5-1) and a clamping seat (5-2); the central shaft (5-1) is a square shaft, both ends of the central shaft are lower than the middle section (5-1-3) to form a step shape, and one end lower than the middle section is

A gum side at the other end lower than the middle section, the gum side

The square part is parallel to the middle section, three scale marks (5-1-1) are arranged on the square part, the end part of the gum side is provided with a positioning mark (5-1-2), the end part of the gum side is inclined in the buccal direction relative to the middle section, and the inclination angle is determined by avoiding the high point of the shape of the neck of the tooth and the gum margin; the clamping seat (5-2) is arranged at the middle section (5-1-3) of the central shaft and is of an integrated structure with the middle section, the axis of the clamping seat (5-2) is vertical to the axis of the middle section (5-1-3), the top surface of the clamping seat (5-2) and the top surface of the middle section (5-1-3) are positioned on the same plane, and the shape and the size of the clamping seat (5-2) are matched with those of the groove (4); when the bracket is positioned, the clamping seat (5-2) is clamped into a groove (4) arranged on the groove body.

7. The all-ceramic passive self-ligating bracket for tooth orthodontics with locking type narrow slot and wide wing according to claim 3, characterized in that the positioning scale (5) is composed of a central shaft (5-1) and a clamping seat (5-2); the central shaft (5-1) is a square shaft, both ends of the central shaft are lower than the middle section (5-1-3) to form a step shape, and one end lower than the middle section is

A gum side at the other end lower than the middle section, the gum side

The square part is parallel to the middle section, three scale marks (5-1-1) are arranged on the square part, the end part of the gum side is provided with a positioning mark (5-1-2), the end part of the gum side is inclined in the buccal direction relative to the middle section, and the inclination angle is determined by avoiding the high point of the shape of the neck of the tooth and the gum margin; the clamping seat (5-2) is arranged at the middle section (5-1-3) of the central shaft and is of an integrated structure with the middle section, the axis of the clamping seat (5-2) is vertical to the axis of the middle section (5-1-3), the top surface of the clamping seat (5-2) and the top surface of the middle section (5-1-3) are positioned on the same plane, and the shape and the size of the clamping seat (5-2) are matched with those of the groove (4); when the bracket is positioned, the clamping seat (5-2) is clamped into a groove (4) arranged on the groove bodyAnd (4) the following steps.

8. The all-ceramic passive self-ligating bracket for tooth orthodontics with locking type narrow slot and wide wing according to claim 4, characterized in that the positioning scale (5) is composed of a central shaft (5-1) and a clamping seat (5-2); the central shaft (5-1) is a square shaft, both ends of the central shaft are lower than the middle section (5-1-3) to form a step shape, and one end lower than the middle section is

A gum side at the other end lower than the middle section, the gum side

The square part is parallel to the middle section, three scale marks (5-1-1) are arranged on the square part, the end part of the gum side is provided with a positioning mark (5-1-2), the end part of the gum side is inclined in the buccal direction relative to the middle section, and the inclination angle is determined by avoiding the high point of the shape of the neck of the tooth and the gum margin; the clamping seat (5-2) is arranged at the middle section (5-1-3) of the central shaft and is of an integrated structure with the middle section, the axis of the clamping seat (5-2) is vertical to the axis of the middle section (5-1-3), the top surface of the clamping seat (5-2) and the top surface of the middle section (5-1-3) are positioned on the same plane, and the shape and the size of the clamping seat (5-2) are matched with those of the groove (4); when the bracket is positioned, the clamping seat (5-2) is clamped into a groove (4) arranged on the groove body.

9. The all-ceramic passive self-ligating bracket for tooth orthodontics with locking type narrow slot and wide wing according to claim 5, characterized in that the positioning scale (5) is composed of a central shaft (5-1) and a clamping seat (5-2); the central shaft (5-1) is a square shaft, both ends of the central shaft are lower than the middle section (5-1-3) to form a step shape, and one end lower than the middle section is

A gum side at the other end lower than the middle section, the gum side

The square part is parallel to the middle section, three scale marks (5-1-1) are arranged on the square part, the end part of the gum side is provided with a positioning mark (5-1-2), the end part of the gum side is inclined in the buccal direction relative to the middle section, and the inclination angle is determined by avoiding the high point of the shape of the neck of the tooth and the gum margin; the clamping seat (5-2) is arranged at the middle section (5-1-3) of the central shaft and is of an integrated structure with the middle section, the axis of the clamping seat (5-2) is vertical to the axis of the middle section (5-1-3), the top surface of the clamping seat (5-2) and the top surface of the middle section (5-1-3) are positioned on the same plane, and the shape and the size of the clamping seat (5-2) are matched with those of the groove (4); when the bracket is positioned, the clamping seat (5-2) is clamped into a groove (4) arranged on the groove body.

10. The all-ceramic passive self-ligating bracket for tooth orthodontics with the locking type narrow groove and the wide wing according to claim 1 or 2, characterized in that a first central axis (6) for bracket positioning is arranged at a position of the top surface of the cover plate (3) parallel to the central line of the slide bar (3-1), a second central axis (7) corresponding to the first central axis (6) of the top surface of the cover plate (3) is arranged at the top surface of the side wall of the groove with the unlocking opening (2-2), and the first central axis (6) and the second central axis (7) are both linear convex structures.

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