Combined tooth appliance

Abstract

The invention relates to a combined tooth appliance which comprises a bracket A for bonding bicuspid teeth or molars and a bracket B for bonding canine tooth lingual sides, and ligation grooves are formed in the surfaces of the bracket A and the bracket B; wherein an arc-shaped cantilever is arranged on the side surface of the bracket A, a pipe hole is formed in the end part of the arc-shaped cantilever, and the pipe hole is positioned above or tangent to a concave part of a tooth occlusal surface; a ligating groove on the B bracket is arranged at one end, and two auxiliary tubes are arranged at the other end side by side; the main arch wire is matched with the ligation grooves of the bracket A and the bracket B to generate orthodontic force; the first steel wire respectively penetrates through the tube hole of the bracket A and one auxiliary tube on the bracket B, and the second steel wire respectively penetrates through the other auxiliary tube on the bracket B and the auxiliary tubes on other anterior tooth brackets. The first steel wire and the second steel wire are associated with the tooth surface to generate additional orthodontic force, so that the teeth are prevented from rotating around the tooth axis.

Description

Technical field:

[0001] The invention belongs to the technical field of dental correction, and in particular relates to a dental combined correction device. Background technology:

[0002] Existing dental appliances are becoming more and more sophisticated to meet the correction needs of teeth in different positions, and are divided into labial and lingual sides. The most commonly used extraction mode in orthodontic clinics is to extract a bicuspid to provide space for aligning the teeth and retracting the anterior teeth to reduce protrusion. During this correction process, the canines must move backwards, and the posterior teeth move forward to distribute and utilize the extraction space. Because the appliance is bonded to the crown, and the impedance center of the tooth is in the middle of the root. This makes it easy for the teeth to tilt when they are moved by force, causing the roots to be non-parallel, and making adjustments in the later stages of correction more difficult. In particular, the lingual bracket width is small, the lever arm is small, and insufficient torque can be generated on the main arch wire to prevent and correct tooth axis tilt.

[0003] Prior art, CN201420149107.8, discloses a lingual bracket with an auxiliary tube, wherein the lower surface of the bracket body is provided with anti-slip grooves, one end of the upper surface of the bracket body is provided with an auxiliary tube hole, and the other end is provided with a ligation groove. The ligation groove on the fixed wing cooperates with the auxiliary tube hole to form a double-line correction force at different positions of the teeth, but in specific tooth positions, it still cannot meet clinical needs well, which becomes the subject of the present invention. Summary of the invention:

[0004] The purpose of the present invention is to design a dental joint appliance for bicuspids or molars and lingual sides of canines.

[0005] The technical solution of the present invention is implemented as follows: a dental joint orthodontic appliance, comprising a bracket A for bonding bicuspids or molars and a bracket B for bonding the lingual side of the canines, the bottom surfaces of the bracket A and the bracket B both have bonding lines and the surfaces have ligation grooves; the characteristics are:

[0006] The side of the bracket A is provided with an arc-shaped cantilever, and the end of the arc-shaped cantilever is provided with a tube hole, which is located above or tangent to the concave part of the tooth occlusal surface;

[0007] The ligation groove on the B bracket is provided at one end, and two auxiliary tubes facing the same direction as the ligation groove are arranged side by side at the end away from the ligation groove;

[0008] A main archwire, which cooperates with the ligature grooves of the A bracket and the B bracket to generate correction force;

[0009] The first steel wire passes through the tube hole of the A bracket and an auxiliary tube on the B bracket respectively, generating additional correction force for the bicuspids or molars and canines;

[0010] The second steel wire passes through another auxiliary tube on bracket B and auxiliary tubes on other anterior brackets to generate canine and anterior teeth correction force.

[0011] Furthermore, the A bracket has a pair of arc-shaped cantilevers symmetrically arranged on both sides of the A bracket, which can fit on both sides of the bicuspids or molars. The length of the tube hole at the end is equivalent to the thickness of the arc-shaped cantilever, and the tube hole is tangent to the occlusal surface of the tooth.

[0012] The A bracket has one arc-shaped cantilever, which is arranged on one side of the A bracket and can be attached to one side of the bicuspid or molar.

[0013] The length of the tube hole (15) at the end of the arc-shaped cantilever is greater than the thickness of the cantilever and extends toward the tooth occlusal surface, so as to be bonded to the tooth occlusal surface.

[0014] The included angle between the two auxiliary tube axes of the B bracket is between 0 and 30 degrees.

[0015] The upper parts of the groove wings on both sides of the ligation grooves of the A bracket and the B bracket are both extended outwards to form ligation barbs for ligation with rubber rings.

[0016] Furthermore, the ligation groove of bracket B is composed of a fixed wing and a movable wing, a slot hole is processed on the central axis of the fixed wing, and the movable wing has a slide rod and a groove wing arranged at one end of the slide rod and a T-shaped stopper arranged at the other end of the slide rod; the movable wing is inserted into the slot hole of the fixed wing through the slide rod, and a spring is sleeved on the slide rod between the T-shaped stopper and the fixed wing, and the spring always keeps the groove wing of the movable wing close to the fixed wing, forming a whole with adjustable ligation groove width.

[0017] The groove wing in the movable wing is nearly perpendicular to the slide bar, the lower end of the groove wing extends out of the bottom surface of the slide bar to form a traction hook of the rubber ring, and the upper end extends out of the surface of the slide bar and folds out a pressure cover to one side of the fixed wing.

[0018] Furthermore, the ligation groove of bracket B is composed of a fixed wing and a movable wing, a slot hole is processed on the central axis of the fixed wing, and the movable wing has a slide rod and a fixed slot arranged at one end of the slide rod and an H foot arranged at the other end of the slide rod; the movable wing is passed through the slot hole of the fixed wing through the slide rod, and is clamped on one side of the slot hole by means of the H foot folded outward to form a whole; the fixed wing folds forward to form a first ligation hook for rubber ring ligation, the front groove wing of the fixed groove on the movable wing cooperates with the fixed wing to form a ligation groove with adjustable width, the rear groove wing folds backward to form a second ligation hook for rubber ring ligation, and the front groove wing folds forward to form a pressure cover.

[0019] The present invention is based on clinical experience in correction. At the beginning of tooth extraction and correction, a large distance is formed between the bicuspids or molars and the canines, and the tooth structure mostly forms a convex turning point at the canines. When moving the canines and aligning the front teeth, not only does the main arch wire generate correction force, but the first steel wire also provides additional constraints on the bicuspids or molars and the canines, effectively avoiding the canines from tilting and shifting. Double auxiliary tubes are provided for the brackets corresponding to the canines, which not only solve the connection with the bicuspids or molars, but also form additional constraints with other front teeth through the second steel wire, and can be associated with the first steel wire to achieve combined correction. Description of the drawings:

[0020] The present invention will be further described below in conjunction with specific illustrations:

[0021] Figure 1 Schematic diagram of the combined appliance

[0022] Figure 2 Schematic diagram of anterior teeth combined correction

[0023] Figure 3 Schematic diagram of double-arm A bracket

[0024] Figure 4 A side view of the double-arm A bracket

[0025] Figure 5 Schematic diagram of single-arm A bracket

[0026] Figure 6 A side view of a single-arm bracket

[0027] Figure 7 Schematic diagram of bracket B

[0028] Figure 8 A side view of bracket B

[0029] Fig. 9 Schematic diagram of bracket B

[0030] Fig.10 Schematic diagram of bracket B from two sides

[0031] Fig.11 Schematic diagram of bracket B II

[0032] Fig.12 Schematic diagram of bracket B

[0033] Fig.13 Schematic diagram of bracket B from three sides

[0034] Fig.14 The diagram of bracket B in three parts

[0035] Fig.15 A single arm A bracket 2 schematic diagram

[0036] Fig.16 A single arm A bracket three schematic diagram

[0037] in

[0038] 10—A bracket; 11—bonding pattern; 12—ligation groove; 13—ligation barb; 14—arc cantilever;

[0039] 15—tube hole;

[0040] 20—B bracket; 21—auxiliary tube; 22—fixing wing; 221—slot hole; 222—first ligature hook;

[0041] 23—movable wing; 231—sliding rod; 232—groove wing; 2321—traction hook; 2322—pressure cover; 233—T-shaped stopper;

[0042] 234—H foot; 24—spring; 25—fixed groove; 251—front groove wing; 252—rear groove wing;

[0043] 253—second ligature hook;

[0044] 30—main arch wire;

[0045] 40—first steel wire;

[0046] 50—second steel wire;

[0047] 60—bicuspids or molars;

[0048] 70—fangs;

[0049] 80—rubber ring; Specific implementation method:

[0050] Reference Figure 1 and Figure 2 The dental joint orthodontic appliance comprises an A bracket 10, a B bracket 20, a main arch wire 30, a first steel wire 40 and a second steel wire 50; the A bracket 10 can be bonded to the lingual side or labial side of the bicuspid 60 or the molar, and the B bracket is bonded to the lingual side of the canine 70. For this purpose, the bottom surfaces of the A bracket 10 and the B bracket 20 are provided with bonding lines 11, and the surfaces are provided with ligation grooves 12; and the upper parts of the groove wings on both sides of the ligation groove 12 are provided with ligation barbs 13 extending outwards to provide the ligation needs of the rubber ring 80.

[0051] like Figures 1 to 6 The side of bracket A 10 is provided with an arc-shaped cantilever 14 that can bypass the side of the bicuspid or molar. The end of the arc-shaped cantilever 14 is provided with a tube hole 15. The tube hole 15 is located above or tangent to the concave part of the occlusal surface of the tooth, so that the first steel wire 40 passing through can be located in the concave part of the bicuspid 60 or molar without occupying too much occlusal position. Figure 3 and Figure 4In the middle structure, the tube hole 15 is tangent to the concave portion of the occlusal surface, so that the steel wire 40 passing through the tube hole 15 is exactly in the concave portion of the occlusal surface; and as Figure 5 and Figure 6 The structure of the tube hole 15 needs to be above the concave portion of the occlusal surface.

[0052] Reference Figure 7 and Figure 8 The ligation groove 12 on the B bracket 20 is arranged at one end, and two auxiliary tubes 21 are arranged side by side at the other end, and the two auxiliary tubes 21 are oriented in the same direction as the ligation groove 12 to cooperate with the ligation or passing of three nearly parallel archwires and steel wires; more specifically, the angle between the axes of the two auxiliary tubes 21 is between 0-30 degrees, which can take into account the difference in the occlusal surface of the anterior teeth and the bicuspids 60 or molars.

[0053] like Figure 1 and Figure 2 The main arch wire 30, which is also the main generating side of the correction force, can cooperate with the ligation groove 12 on the A bracket 10 and the B bracket 20 to generate the correction force; in the early stage of correction, the teeth are seriously misaligned, and the main arch wire 30 generally cannot enter the ligation groove 12. It needs to be pulled by the rubber ring 80, gradually shifted, and then forced into the ligation groove to produce the final and maintain stable correction result.

[0054] The first steel wire 40 passes through the tube hole 15 of bracket A and an auxiliary tube 21 on bracket B, respectively, to generate additional correction force for the bicuspids 60 or the molars and canines 70 to stabilize the movement of the canines 70 and prevent the canines 70 from rotating and tilting around the tooth axis due to a single correction force.

[0055] The second steel wire 50 passes through another auxiliary tube 21 on the B bracket 20 and the auxiliary tubes on other anterior tooth brackets, respectively, to generate correction force on the canines 70 and the anterior teeth; using the bicuspids 60 or molars as stable anchor points, with the help of the first steel wire 40 and the second steel wire 50, the canines and other anterior teeth are constrained to allow displacement and avoid tilting.

[0056] Clinically, generally, a bicuspid adjacent to the canine is extracted, and the A bracket 10 is bonded to the remaining bicuspid; in special cases, a bicuspid adjacent to the molar may be extracted, then the A bracket 10 is bonded to the molar, and similarly the B bracket 20 is bonded to the remaining bicuspid.

[0057] A bracket detailed design:

[0058] In clinical treatment, one bicuspid or molar is often extracted to free up space for aligning the front teeth. A large gap is formed on at least one side of the remaining bicuspid 60 or molar, allowing the arc cantilever 14 to go around to the side. For this purpose, the A bracket 10 has the following two structures:

[0059] 1. If Figure 3 and Figure 4 The arc-shaped cantilever 14 of bracket A is a pair, symmetrically arranged on both sides of bracket A 10, and can be fitted on both sides of the bicuspid 60 or molar. The length of the tube hole 15 at the end is equivalent to the thickness of the arc-shaped cantilever. The tube hole is selected to be tangent to the occlusal surface. The first steel wire passing through fits the recessed part of the occlusal surface to reduce the space occupied. The left and right tube holes 15 can also meet the requirement of constraining the direction of the first steel wire 40.

[0060] 2. If Figure 5 and Figure 6 The arc-shaped cantilever arm 14 of the A bracket is one, which is arranged on one side of the A bracket 10. The length of the tube hole 15 is greater than the thickness of the cantilever arm, and it extends toward the side of the tooth occlusal surface and is located above the occlusal surface, and can be bonded to the concave part of the tooth occlusal surface. The single extended tube hole 15 can also stabilize the direction of the first steel wire 40.

[0061] A bracket is mainly used on bicuspids or molars. Due to its good state and stability, it is mainly used as an anchor point for correction force. The ligation groove 12 for ligating the main arch wire can also be designed to be tubular for the main arch wire 30 to pass through, such as Fig.15 and Fig.16 , and with the design of an arc cantilever 14, the main functions are ensured to remain unchanged, and the bracket structure and space occupation are further simplified. Fig.15 and Figure 5 and Figure 6 Similarly, the tube hole 15 extends toward the occlusal surface and is located above the occlusal surface.

[0062] and Fig.16 , a single arc-shaped cantilever 14 is also used, and the tube hole 15 is selected to be equivalent to the thickness of the arc-shaped cantilever 14 and is located at the occlusal tangent position. The tube hole 15 can be used to guide and constrain the direction of the first steel wire 40, and the first steel wire 40 that passes through can be placed on the raised parts on both sides of the depressed part of the occlusal surface to generate correction force.

[0063] B bracket detailed design:

[0064] The position of the canine 70 on the gum structure is quite special. Compared with the bicuspid 60 or molar, which is often convex and higher, the lingual side can find a position parallel to the concave part of the occlusal surface of the bicuspid or molar. Therefore, the matching B bracket 20 is suitable for bonding on the lingual side and has a more flexible structure for clinical selection. In addition to the above example, there are two other types:

[0065] 1. Reference Fig. 9 , Fig.10 and Fig.11The ligation groove 12 of the bracket B is composed of a fixed wing 22 and a movable wing 23. A slot 221 is processed on the central axis of the fixed wing 22. The slot 221 in this embodiment is an open slot. The movable wing 23 has a slide bar 231, a groove wing 232 arranged at one end of the slide bar, and a T-shaped stopper 233 arranged at the other end of the slide bar.

[0066] The movable wing is inserted into the slot 221 of the fixed wing through a slide bar 231, and a spring 24 is sleeved on the slide bar between the T-shaped stopper 233 and the fixed wing 22. The spring 24 always keeps the groove 232 of the movable wing close to the fixed wing 22, forming a whole with adjustable width of the ligation groove 12. The adjustable width of the ligation groove 12 brings convenience to clinical operation, and the ligation rubber ring can generate a corrective force in a stable direction.

[0067] Furthermore, the groove wing 232 in the movable wing is nearly perpendicular to the slide bar 231, and the lower end of the groove wing extends out of the bottom surface of the slide bar to form a traction hook 2321 of the rubber ring, and the upper end extends out of the surface of the slide bar and folds out a pressure cover 2322 on one side of the fixed wing. In the early stage of correction, the main arch wire 30 is often located outside the bracket, and is suspended at the traction hook 2321 with the help of the rubber ring, which generates a continuous traction correction force on the bracket; the function of the pressure cover 2322 is to provide constraints to maintain the force direction after the main arch wire 30 enters the ligature groove.

[0068] 2. Reference Fig.12 , Fig.13 and Fig.14 The ligation groove of bracket B is also composed of a fixed wing 22 and a movable wing 23. A slot 221 is processed on the central axis of the fixed wing 22, and the slot 221 is a through-hole structure; the fixed wing 22 is also folded forward to form a first ligation hook 222 for ligation with a rubber ring.

[0069] The movable wing has a slide bar 231, a fixed groove 25 arranged at one end of the slide bar, and an H foot 234 arranged at the other end of the slide bar; the movable wing is inserted into the slot 221 of the fixed wing through the slide bar 231, and is clamped on one side of the slot 221 by means of the H foot 234 folded outward to form a whole. Specifically, the H foot is bent with the help of surgical forceps to form an anti-slip constraint. The front groove wing 251 of the fixed groove 25 on the movable wing cooperates with the fixed wing 22 to form a ligation groove 12 with adjustable width, and the rear groove wing 252 folds out a second ligation hook 253 for ligation with a rubber ring, and the front groove wing 251 folds out a pressure cover 2322 forward to constrain the main arch wire entering the ligation groove 12, and the rubber ring ligated on the first ligation hook 222 and the second ligation hook 253 provides correction force. In this example, the movable wing has a fixed groove 25 that can provide an option for the main arch wire 30 to enter the groove.

[0070] The above are just two typical schemes for configuring the movable wing B bracket 20, which can be designed into other structural forms according to clinical needs; in clinical practice, it can also be used alone or combined and separated according to different correction stages, that is, the first ligation hook 222 is connected to the main arch wire on the outside of the bracket through the rubber ring to generate continuous correction force.

Claims

1. A dental joint orthodontic appliance, comprising an A bracket (10) for bonding a bicuspid or molar and a B bracket (20) for bonding a lingual side of a canine, wherein the bottom surfaces of the A bracket (10) and the B bracket (20) are both provided with bonding lines (11) and the surfaces are both provided with ligature grooves (12); the characteristics are as follows: The side of the A bracket (10) is provided with an arc-shaped cantilever (14), and the end of the arc-shaped cantilever (14) is provided with a tube hole (15), and the tube hole (15) is located above or tangent to the concave part of the tooth occlusal surface; The ligation groove (12) on the B bracket (20) is arranged at one end, and two auxiliary tubes (21) facing the same direction as the ligation groove (12) are arranged side by side at the end away from the ligation groove (12); A main arch wire (30) cooperates with the ligature grooves (12) of the A bracket (10) and the B bracket (20) to generate a correction force; A first steel wire (40) passes through the tube hole (15) of the A bracket and an auxiliary tube (21) on the B bracket, respectively, to generate additional correction force for the bicuspids or molars and canines; The second steel wire (50) passes through another auxiliary tube (21) on the B bracket and the auxiliary tubes (21) on other anterior teeth brackets respectively, generating canine and anterior teeth correction force.

2. A dental joint appliance according to claim 1, characterized in that: The arc-shaped cantilever (14) of the A bracket is a pair, symmetrically arranged on both sides of the A bracket (10), and can be attached to both sides of the bicuspids or molars. The length of the tube hole (15) at the end is equivalent to the thickness of the arc-shaped cantilever (14), and the tube hole (15) is tangent to the occlusal surface of the tooth.

3. A dental joint appliance according to claim 1, characterized in that: The A bracket has a single arc-shaped cantilever (14), which is arranged on one side of the A bracket (10) and can be fitted on one side of a bicuspid or a molar.

4. A dental joint appliance according to claim 1 or 3, characterized in that: The length of the tube hole (15) at the end of the arc-shaped cantilever is greater than the thickness of the cantilever and extends toward the tooth occlusal surface so as to be bonded to the tooth occlusal surface.

5. The dental joint appliance according to claim 1, characterized in that: The included angle between the axes of the two auxiliary tubes (21) of bracket B is between 0 and 30 degrees.

6. The dental joint appliance according to claim 1, characterized in that: The upper parts of the groove wings on both sides of the ligation groove (12) on the A bracket and the B bracket are both extended outwards to form ligation barbs (13) for ligation with rubber rings.

7. The dental joint appliance according to claim 1, characterized in that: The ligation groove (12) of the B bracket is composed of a fixed wing (22) and a movable wing (23). A slot hole (221) is processed on the central axis of the fixed wing (22). The movable wing (23) comprises a slide bar (231), a groove wing (232) arranged at one end of the slide bar, and a T-shaped stopper (233) arranged at the other end of the slide bar. The movable wing is inserted into the slot hole (221) of the fixed wing through the slide bar (231). A spring (24) is sleeved on the slide bar (231) between the T-shaped stopper (233) and the fixed wing (22). The spring (24) always keeps the groove wing (232) of the movable wing close to the fixed wing (22), so as to form a whole with adjustable width of the ligation groove (12).

8. A dental joint appliance according to claim 7, characterized in that: The groove wing (232) in the movable wing is nearly perpendicular to the slide bar (231), the lower end of the groove wing (232) extends out of the bottom surface of the slide bar (231) to form a traction hook (2321) of the rubber ring, and the upper end extends out of the surface of the slide bar (231) and folds out a pressure cover (2322) toward one side of the fixed wing.

9. The dental joint appliance according to claim 1, characterized in that: The ligation groove (12) of the B bracket is composed of a fixed wing (22) and a movable wing (23). A slot (221) is processed on the central axis of the fixed wing (22). The movable wing (23) has a slide bar (231), a fixed groove (25) arranged at one end of the slide bar (231), and an H foot (234) arranged at the other end of the slide bar (231). The movable wing is inserted into the slot (221) of the fixed wing through the slide bar (231) and is folded outwards by means of the H foot (234). 34) is stuck on one side of the slot (221) to form a whole; the fixed wing (22) is folded forward to form a first ligation hook (222) for ligation with a rubber ring, the front groove wing (251) of the fixed groove (25) on the movable wing cooperates with the fixed wing (22) to form a ligation groove (12) with adjustable width, the rear groove wing (252) is folded backward to form a second ligation hook (253) for ligation with a rubber ring, and the front groove wing (251) is folded forward to form a pressure cover (2322).

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