CN111214300A - Tooth orthodontics active self-locking bracket with narrow groove and wide wing - Google Patents

Tooth orthodontics active self-locking bracket with narrow groove and wide wing Download PDF

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Publication number
CN111214300A
CN111214300A CN202010163992.5A CN202010163992A CN111214300A CN 111214300 A CN111214300 A CN 111214300A CN 202010163992 A CN202010163992 A CN 202010163992A CN 111214300 A CN111214300 A CN 111214300A
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China
Prior art keywords
groove
bracket
middle section
sliding
clamping seat
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CN202010163992.5A
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Chinese (zh)
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韩向龙
汤琳
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Sichuan University
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Sichuan University
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
    • A61C7/28—Securing arch wire to bracket
    • A61C7/34—Securing arch wire to bracket using lock pins

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

A tooth orthodontics active self-locking bracket with narrow groove and wide wing is composed of a bonding net bottom, a groove body fixed on the bonding net bottom, a sliding elastic sheet combined with the groove body and a positioning scale used for bracket positioning, the groove for installing the arch wire arranged on the groove body is composed of a straight section and an 'outer splayed' section connected with two ends of the straight section, the structure and combination mode of the groove body and the sliding elastic sheet enable the cover plate of the sliding elastic sheet, the clamping plate at the tail end of the cover plate, the locking groove, the unlocking groove and the sliding groove on the groove body to jointly form a spring clamp type structure of the bracket, therefore, the active self-ligating bracket not only has the framework of a wide-wing bracket, but also narrows the effective length of the groove, thereby having the advantages of the self-ligating wide-wing bracket and the narrow-wing bracket, the requirements of quickly aligning and leveling dentition, early using a full-size arch wire and effectively controlling rotation can be simultaneously met at the initial stage of orthodontic treatment, and the later stage of correction can provide larger friction force to be beneficial to controlling tooth torque.

Description

Tooth orthodontics active self-locking bracket with narrow groove and wide wing
Technical Field
The invention belongs to the technical field of orthodontic appliances, and particularly relates to an active self-locking bracket for tooth orthodontics.
Background
The bracket is an appliance which must be used for orthodontic treatment of teeth, and can be divided into a wide-wing bracket and a narrow-wing bracket according to the width of the bracket in the orthodontic treatment process of the teeth in the oral cavity. 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.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a narrow-groove wide-wing tooth orthodontic active self-locking bracket, which combines a narrow-wing bracket groove and a wide-wing bracket frame, so that the requirements of quickly aligning and leveling dentition, using a full-size arch wire as soon as possible and effectively controlling rotation can be simultaneously met at the initial stage of orthodontic treatment, and larger friction force can be provided at the later stage of orthodontic treatment to facilitate the control of tooth torque.
The invention relates to a tooth orthodontic active self-locking bracket with a narrow groove and a wide wing, which consists of a bonding net bottom, a groove body which is provided with the groove and the ligating wing and is fixed on the bonding net bottom, a sliding elastic sheet combined with the groove body and a positioning scale used for positioning the bracket, wherein the groove arranged on the groove body consists of a straight section and an 'outer splayed' section which is connected with two ends of the straight section.
The tooth orthodontic active self-locking bracket with the narrow groove and the wide wing has the advantages that the straight section length (also called as the effective length of the groove) of the groove is controlled to be 1.8-2.4 mm, the lengths of the splayed sections connected at the two ends can be equal or unequal, but the optimal length is equal and is controlled to be 0.2-0.6 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 tooth orthodontics active self-locking bracket with the narrow groove and the wide wing is characterized in that a sliding groove penetrating through the groove body is arranged at the bottom of the groove body, the center line of the sliding groove is perpendicular to the center line of the groove, two side walls of the groove arranged on the groove body are different in height, a higher side wall is defined as a high side wall, a lower side wall is defined as a low side wall, a locking groove is arranged on the inner wall surface of the high side wall, and an unlocking groove is arranged on the top surface of the low side wall.
The invention relates to a tooth orthodontic active self-locking bracket with narrow grooves and wide wings, wherein a sliding elastic sheet of the tooth orthodontic active self-locking bracket is composed of a sliding plate positioned at the lower part, a cover plate positioned at the upper part and used for covering the grooves, and an arc-shaped section for connecting the sliding plate and the cover plate, and is of an integrated structure; the shape and the size of the sliding plate are matched with those of the sliding groove at the bottom of the groove body, the tail end of the sliding plate is provided with a limiting lug for avoiding the sliding plate from slipping, the shape and the size of the cover plate are matched with those of the groove on the groove body and the top surface of the lower side wall of the groove body, the tail end of the cover plate is provided with a clamping plate clamped with the locking groove on the inner wall surface of the high side wall of the groove, and the section, close to the clamping plate, of the; the combination of the sliding elastic sheet and the groove body: the sliding plate of the sliding elastic piece is inserted into the sliding groove at the bottom of the groove body, the cover plate of the sliding elastic piece is positioned on the top surface of the low side wall of the groove, so that the groove is in an open state, or the cover plate of the sliding elastic piece covers the groove and the top surface of the low side wall of the groove, and the clamping plate at the tail end of the cover plate is clamped into the locking groove arranged on the inner wall surface of the high side wall of the groove, so that.
The structure and the combination mode of the groove body and the sliding elastic sheet enable the cover plate of the sliding elastic sheet, the clamping plate at the tail end of the cover plate, the locking groove, the unlocking groove and the sliding groove on the groove body to jointly form a spring clamp type structure of the bracket.
The bottom surface of the bonding net bottom of the tooth orthodontic active self-locking bracket with the narrow groove and the wide wing is in a grid shape, so that the bonding effect of the bracket in use is better.
The invention relates to a tooth orthodontic self-locking bracket with narrow grooves and wide wings, wherein a positioning scale of the tooth orthodontic self-locking bracket is composed of a central shaft and a clamping seat; the central axis is a square axisBoth ends of the connecting rod are lower than the middle section to form a step shape, and one end lower than the middle section is
Figure BDA0002406757790000022
A gum side at the other end lower than the middle section, the gum side
Figure BDA0002406757790000021
The square part is parallel to the middle section, three scale marks are arranged on the square part, the end part of the gum part is a positioning mark, the end part of the gum part inclines in the buccal direction relative to the middle section, and the inclination angle is determined by avoiding the appearance high point of the tooth neck and the gum margin (generally 5-30 degrees); 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 groove body and the bonding net bottom of the tooth orthodontic self-locking bracket with the narrow groove and the wide wing can be made of stainless steel or biological ceramics, the sliding elastic piece can be made of stainless steel, and the positioning scale can be made of medical silica gel or rubber.
The invention has the following beneficial effects:
1. the groove of the tooth orthodontic self-locking bracket consists of a straight section and an 'outer splayed' section connected with two ends of the straight section, so that the tooth orthodontic self-locking bracket has a frame of a wide-wing bracket and also has the advantage of narrowing the effective length of the groove, thereby having the advantages of the self-locking wide-wing bracket and the self-locking narrow-wing bracket, simultaneously meeting the requirements of quickly aligning and leveling dentition, early using a full-size arch wire and effectively controlling rotation at the initial stage of orthodontic treatment, and providing larger friction force to be beneficial to the control of tooth torque at the later stage of orthodontic treatment.
2. The structure and combination mode of the groove body and the sliding elastic sheet enable the cover plate of the sliding elastic sheet, the clamping plate at the tail end of the cover plate, the locking groove, the unlocking groove and the sliding groove on the groove body to jointly form a spring clamp type structure of the bracket, so that when the arch wire is a round wire, the arch wire is not in contact with the spring clamp and has lower friction force, and when the arch wire is a large-size arch wire, the spring clamp is in contact with the arch wire and can provide larger friction force, thereby being beneficial to controlling tooth torque.
3. 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,
Figure BDA0002406757790000031
the square is provided with scale marks, thereby being more convenient for the bracket to be positioned quickly and accurately.
4. The groove of the tooth orthodontic self-locking bracket has a simple structure and is convenient to process and manufacture.
Drawings
FIG. 1 is a schematic structural view of a narrow-slot wide-wing active self-ligating bracket for dental orthodontics according to the present invention, with a sliding spring in an open position and a slot in an open position;
FIG. 2 is a schematic view of the sliding clip of the narrow slot wide wing dental orthodontic active self-ligating bracket of FIG. 1 in a locked state with the slot in a closed state;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a schematic structural view of a groove in a narrow-groove wide-wing tooth orthodontic active self-locking bracket of the invention;
FIG. 5 is a schematic structural view of a slot body in the narrow-slot wide-wing tooth orthodontic active self-locking bracket of the invention;
FIG. 6 is a rear view of FIG. 5;
FIG. 7 is a schematic structural view of a sliding spring plate in a narrow-slot wide-wing tooth orthodontic active self-locking bracket of the invention;
FIG. 8 is a side perspective view of FIG. 7;
FIG. 9 is a schematic view of the bottom surface of the adhesive net in the active self-ligating bracket for tooth orthodontics with narrow slot and wide wing according to the present invention;
FIG. 10 is a schematic structural view of a positioning scale in a narrow-groove wide-wing tooth orthodontic active self-locking bracket of the invention.
FIG. 11 is a schematic view of a combination of a positioning scale and a groove in bracket positioning.
In the figure, 1-bonding net bottom, 2-groove body, 2-1-locking groove, 2-sliding groove, 2-3-ligation wing, 2-4-unlocking groove, 3-1-outer eight field, 3-2-straight section, 4-sliding elastic sheet, 4-1-sliding plate, 4-1-limiting lug, 4-2-cover plate, 4-2-1-clamping plate, 4-3-auxiliary sliding hole, 5-positioning scale, 5-1-central shaft, 5-1-1 scale mark, 5-1-2 positioning mark, 5-1-3-middle section and 5-2-clamping seat.
Detailed Description
The invention further discloses a tooth orthodontic active self-locking bracket with a narrow groove and a wide wing by an embodiment with the help of the attached drawings.
In this embodiment, the structural diagram of the active self-ligating bracket for tooth orthodontics with narrow groove and wide wing is shown in fig. 1, fig. 2, fig. 3 and fig. 11, and the active self-ligating bracket for tooth orthodontics with narrow groove and wide wing is composed of a bonding net bottom 1, a groove body 2 fixed on the bonding net bottom, a sliding elastic sheet 4 combined with the groove body and a positioning scale 5 for bracket positioning.
as shown in fig. 5 and 6, the upper portion of the tank body 2 is provided with a groove 3 for installing an arch wire, the bottom of the tank body is provided with a sliding groove 2-2 penetrating through the tank body, the center line of the sliding groove 2-2 is perpendicular to the center line of the groove 3, two side walls of the groove 3 have different heights, the higher side wall is defined as a high side wall, the lower side wall is defined as a low side wall, the inner wall surface of the high side wall is provided with a locking groove 2-1, the top surface of the low side wall is provided with an unlocking groove 2-4, the outer edges of two ends of two side walls of the groove 3 are respectively provided with a ligating wing 2-3, the groove 3 arranged on the tank body is composed of a straight section 3-2 and an outer splayed section 3-1 connected with two ends of the straight section as shown in fig. 4 and 5, the length L2 of the straight section 3-2 is 2.0mm, the lengths of the outer splayed sections connected with two ends of the straight section are equal, both side walls are equal to each other, the total length of the groove L3 is equal to the total length of the two side walls of the groove L1 mm, the splayed sections are.
The sliding elastic sheet 4 is composed of a sliding plate 4-1 positioned at the lower part, a cover plate 4-2 positioned at the upper part for covering the groove and an arc-shaped section for connecting the sliding plate and the cover plate, and is of an integrated structure as shown in figures 7 and 8; the shape and the size of a sliding plate 4-1 are matched with a sliding groove 2-2 at the bottom of a groove body, a limiting lug 4-1-1 for avoiding the sliding plate from slipping is arranged at the tail end of the sliding plate, the shape and the size of a cover plate 4-2 are matched with the groove on the groove body and the top surface of the lower side wall of the groove body, a clamping plate 4-2-1 clamped with a locking groove 2-1 on the inner wall surface of the high side wall of the groove is arranged at the tail end of the cover plate, and an auxiliary sliding hole 4-3 for assisting a sliding elastic sheet to slide is; the combination of the sliding elastic sheet and the groove body: a sliding plate 4-1 of the sliding elastic sheet is inserted into a sliding groove 2-2 at the bottom of the groove body, a cover plate 4-2 of the sliding elastic sheet is positioned on the top surface of the lower side wall of the groove, or the cover plate 4-2 of the sliding elastic sheet covers the groove 3 and the top surface of the lower side wall of the groove, and a clamping plate 4-2-1 at the tail end of the cover plate 4-2 is clamped into a locking groove 2-1 arranged on the inner wall surface of the high side wall of the groove.
As shown in fig. 1 and 9, the adhesive net bottom 1 has a planar top surface and a grid-shaped bottom surface.
The positioning scale 5 is composed of a central shaft 5-1 and a clamping seat 5-2 as shown in fig. 10; 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
Figure BDA0002406757790000041
A gum side at the other end lower than the middle section, the gum side
Figure BDA0002406757790000042
The square part is parallel to the middle section, three scale marks 5-1-1 are arranged on the square part and are used for positioning the cutting end of a bracket, the positioning mark 5-1-2 is arranged at the end part of the gum part, the end part of the gum part inclines in the buccal direction relative to the middle section, and the inclination angle gamma is 10 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 are matched with those of the groove 3; 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).
In this embodiment, the adhesive net bottom 1, the groove body 2 and the sliding elastic piece 4 are made of medical stainless steel, and the positioning scale 5 is made of medical silica gel.
The invention is not limited to the above embodiment, and a series of brackets can be prepared according to the length range of the straight groove section and the splayed section and the included angle range of the inner wall surfaces of the two side walls of the splayed section and the angle range of the gum cheek inclination of the positioning ruler, so as to meet the orthodontic treatment needs of different patients.

Claims (10)

1. A tooth orthodontics active self-locking bracket with narrow groove and wide wing comprises a bonding net bottom (1), a groove body (2) which is provided with a groove (3) and a ligating wing (2-3) and fixed on the bonding net bottom, a sliding elastic sheet (4) combined with the groove body and a positioning scale (5) used for bracket positioning, and is characterized in that the groove (3) arranged on the groove body consists of a straight section (3-2) and an 'outer splayed' section (3-1) connected with two ends of the straight section.
2. The active self-ligating bracket for tooth orthodontics with narrow slot and wide wing as claimed in claim 1, wherein the length of the straight section (3-2) is controlled to be 1.8 mm-2.4 mm, the length of the outer splayed section (3-1) jointed at the two ends of the straight section is equal and controlled to be 0.2 mm-0.6 mm, and the included angle of the inner wall surface of the two side walls of the outer splayed section jointed at the two ends of the straight section is equal and controlled to be 7-80 °.
3. The active self-locking bracket for tooth orthodontics with narrow slot and wide wing according to claim 1 or 2, characterized in that the bottom of the bracket body is provided with a sliding groove (2-2) penetrating through the bracket body, the central line of the sliding groove (2-2) is perpendicular to the central line of the slot (3), two side walls of the slot (3) arranged on the bracket body (2) have different heights, the higher side wall is defined as a high side wall, the lower side wall is defined as a low side wall, the inner wall surface of the high side wall is provided with a locking groove (2-1), and the top surface of the low side wall is provided with an unlocking groove (2-4).
4. The active self-ligating bracket for tooth orthodontics with narrow slot and wide wing as claimed in claim 3, wherein said sliding spring (4) is composed of a sliding plate (4-1) at lower part, a cover plate (4-2) at upper part for covering slot and an arc segment for connecting the sliding plate and the cover plate, and is of an integrated structure; the shape and the size of the sliding plate (4-1) are matched with a sliding groove (2-2) at the bottom of the groove body, a limiting bump (4-1-1) for avoiding the sliding plate from slipping is arranged at the tail end of the sliding plate, the shape and the size of the cover plate (4-2) are matched with the groove on the groove body and the top surface of the lower side wall of the groove body, a clamping plate (4-2-1) clamped with a locking groove (2-1) on the inner wall surface of the high side wall of the groove is arranged at the tail end of the cover plate, and an auxiliary sliding hole (4-3) for assisting the sliding elastic piece to slide;
the combination of the sliding elastic sheet and the groove body: a sliding plate (4-1) of the sliding elastic sheet is inserted into a sliding groove (2-2) at the bottom of the groove body, a cover plate (4-2) of the sliding elastic sheet is positioned on the top surface of the lower side wall of the groove, or the cover plate (4-2) of the sliding elastic sheet covers the groove (3) and the top surface of the lower side wall of the groove, and a clamping plate (4-2-1) at the tail end of the cover plate (4-2) is clamped into a locking groove (2-1) arranged on the inner wall surface of the high side wall of the groove.
5. The active self-ligating bracket for tooth orthodontics with narrow slot and wide wing as claimed in claim 1 or 2, characterized in that said positioning ruler (5) is composed of central shaft (5-1) and clamping base (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
Figure FDA0002406757780000011
A gum side at the other end lower than the middle section, the gum side
Figure FDA0002406757780000012
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), and the top surface of the clamping seat (5-2) is connected with the middle sectionThe top surfaces of the middle sections (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 (3); when the bracket is positioned, the clamping seat (5-2) is clamped into a groove (3) arranged on the groove body.
6. The active self-ligating bracket for tooth orthodontics with narrow slot and wide wing as claimed in claim 3, wherein said positioning ruler (5) is composed of central shaft (5-1) and 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
Figure FDA0002406757780000021
The other end, which is lower than the middle section, is a gingival part, the occlusal part is parallel to the middle section, three scale marks (5-1-1) are arranged on the occlusal part, the end part of the gingival part is a positioning mark (5-1-2), the end part of the gingival part is inclined in the buccal direction relative to the middle section, and the inclination angle is determined by avoiding a contour high point of a tooth neck and a gingival 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 (3); when the bracket is positioned, the clamping seat (5-2) is clamped into a groove (3) arranged on the groove body.
7. The active self-ligating bracket for tooth orthodontics with narrow slot and wide wing as claimed in claim 4, wherein said positioning ruler (5) is composed of central shaft (5-1) and 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
Figure FDA0002406757780000022
The other end of the square body, which is lower than the middle section, is a gum square body, the gum square body is parallel to the middle section, three scale marks (5-1-1) are arranged on the gum square body, the end part of the gum square body is provided with a positioning mark (5-1-2), and the gum isThe square end portions are buccally inclined relative to the middle section at an angle determined to avoid the contour high points of the neck of the tooth and the gingival 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 (3); when the bracket is positioned, the clamping seat (5-2) is clamped into a groove (3) arranged on the groove body.
8. The narrow-slot wide-wing tooth orthodontic active self-locking bracket as claimed in claim 1 or 2, characterized in that the bottom surface of the adhesive net bottom (1) is in a grid shape.
9. The narrow-slot wide-wing tooth orthodontic active self-locking bracket as claimed in claim 4, characterized in that the bottom surface of the adhesive net bottom (1) is in a grid shape.
10. The narrow-slot wide-wing tooth orthodontic active self-locking bracket as claimed in claim 5, characterized in that the bottom surface of the adhesive net bottom (1) is in a grid shape.
CN202010163992.5A 2020-03-11 2020-03-11 Tooth orthodontics active self-locking bracket with narrow groove and wide wing Pending CN111214300A (en)

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CN202010163992.5A CN111214300A (en) 2020-03-11 2020-03-11 Tooth orthodontics active self-locking bracket with narrow groove and wide wing

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Application Number Priority Date Filing Date Title
CN202010163992.5A CN111214300A (en) 2020-03-11 2020-03-11 Tooth orthodontics active self-locking bracket with narrow groove and wide wing

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Publication Number Publication Date
CN111214300A true CN111214300A (en) 2020-06-02

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