Orthodontic traction device for embedded teeth and working method

Abstract

The invention discloses an orthodontic traction device for embedded teeth and a manufacturing method, solves the problem that an embedded tooth traction device in the prior art is easy to fall off due to the fact that the exposed part of the embedded teeth is not attached, and has the advantages that the embedded tooth traction device can be effectively attached to the exposed part of the embedded teeth, and meanwhile, the traction device is telescopic and adjustable in length; the orthodontic traction device has the beneficial effects of facilitating clinical stress application operation, shortening operation time and preventing the traction device from falling off, and the specific scheme is as follows: the orthodontic traction device for the embedded tooth comprises a supporting component, the supporting component is provided with a groove, and the groove can be attached to a predicted exposed part of the embedded tooth; the supporting component is manufactured through 3D printing according to data of a predicted exposed part of the embedded tooth of a patient, the supporting component is connected with the telescopic component, the length of the telescopic component relative to the supporting component is adjustable, and a hook part is arranged at one end, away from the supporting component, of the telescopic component to be matched with a traction rope.

Description

Technical Field

[0001] The invention relates to the field of traction of impacted teeth, in particular to an orthodontic traction device for impacted teeth and a working method. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Impacted teeth are a common oral problem, which refers to teeth that can only partially erupt or cannot erupt at all due to adjacent teeth, bones or soft tissues. The teeth are often unable to erupt to the normal position due to obstruction of bones, teeth or fibrous tissues. If the obstruction is slight, the teeth will erupt slowly or misplaced. If the obstruction is severe, they may be buried in the mucosa or bones. This situation is called impacted teeth. The incidence of impacted teeth has been reported in foreign studies to be 13.7%-16.5%. Impacted teeth are often associated with different malocclusions, leading to pulp lesions and periodontal lesions of adjacent teeth, causing loose teeth and tooth loss. The diagnosis and treatment of impacted teeth has always been a difficult problem faced by dentists. Due to their hidden position and complex morphology, they require the use of advanced imaging technology for accurate positioning in order to formulate a suitable treatment plan.

[0004] There are two main treatment methods for impacted teeth: extraction and orthodontic traction. For impacted teeth that cannot be erupted by orthodontic traction, extraction is necessary. For impacted teeth with the potential to erupt, they can be pulled into a normal position by an orthodontic traction device after surgical exposure, and the effect of orthodontic traction on impacted teeth is feasible. In orthodontic treatment, the stability and accuracy of the impacted tooth traction device are crucial to the treatment of impacted teeth.

[0005] However, traditional traction devices, such as lingual buckles, brackets and other auxiliary components, rely on the lingual buckles or brackets to fit with the exposed part of the impacted tooth after the impacted tooth is partially exposed, and then the lingual buckles or brackets are pulled by steel wires. There is a problem that the shape and area are not easy to fit with the exposed tooth surface. In the process of fitting with the exposed part of the impacted tooth, it is necessary to adjust, paste and inject adhesive repeatedly before fixing, resulting in a long operation time. Moreover, during the traction process of several months, the traction device is easy to fall off, which has become a common problem in orthodontic traction of impacted teeth. Once the traction device falls off, it is necessary to open the window again and re-bond it for traction.

[0006] In addition, the lingual buckle or bracket is connected to a thinner steel wire, which is easy to break during the operation. In the process of gradually pulling out the impacted tooth, the impacted tooth gradually moves in the correct direction, and the length of the steel wire extending from the gum surface gradually increases. The elongated steel wire inevitably brings discomfort to the patient. For this reason, the steel wire is often cut during the operation. After cutting, the part exposed on the gum surface is sharp and not easy to grind flat, so there is still a certain discomfort. Summary of the invention

[0007] In view of the deficiencies in the prior art, the object of the present invention is to provide an orthodontic traction device for impacted teeth, which can flexibly adjust the length to adapt to impacted teeth in different positions, improve the bonding firmness, and shorten the operation time.

[0008] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0009] An orthodontic traction device for impacted teeth comprises a supporting member, the supporting member is provided with a groove, the groove can fit with the expected exposed part of the impacted tooth, the supporting member is made by 3D printing according to the data of the expected exposed part of the patient's impacted tooth, the supporting member is connected to a telescopic member, the length of the telescopic member relative to the supporting member is adjustable, and a hook is provided at one end of the telescopic member away from the supporting member to cooperate with a traction rope for traction.

[0010] In the orthodontic traction device for impacted teeth as described above, the telescopic member is fixedly connected to one side of the support member, or the telescopic member is movably connected to one side of the support member so that the telescopic member can swing along the tooth axis relative to the support member.

[0011] In an orthodontic traction device for impacted teeth as described above, the telescopic member includes a sleeve connected to the support member, a traction member is arranged in the sleeve, the traction member is retractable relative to the sleeve, and the hook is arranged at one end of the traction member away from the support member.

[0012] In the orthodontic traction device for impacted teeth as described above, a limiting portion is provided in the sleeve to limit the end of the traction member away from the hook portion;

[0013] Multiple layers of limiting parts are arranged along the length direction of the sleeve, and two adjacent layers of limiting parts are arranged at a distance, and each layer of limiting parts includes at least two limiting blocks.

[0014] In an orthodontic traction device for impacted teeth as described above, a convex portion is provided at one end of the traction member away from the hook portion, and the limiting portion can contact the convex portion to limit the traction member, and the length of the convex portion is smaller than the distance between two adjacent limiting blocks in two adjacent layers of the limiting portion.

[0015] As described above, an orthodontic traction device for impacted teeth, the traction member includes a traction tube, the length of the traction tube is adapted to the length of the sleeve, the traction tube is connected to the hook, and the inner diameter of the sleeve at the limiting portion is 0-1 mm larger than the outer diameter of the traction tube.

[0016] In the orthodontic traction device for impacted teeth as described above, a pin is arranged on one side of the support member facing the sleeve, and one end of the sleeve passes through the pin;

[0017] A first lifting ear is arranged at the bottom of the supporting member, and the first lifting ear supports the pin shaft. A second lifting ear is arranged at one end of the sleeve, and the pin shaft passes through the first lifting ear and the second lifting ear.

[0018] In another embodiment of an orthodontic traction device for impacted teeth as described above, the sleeve and the supporting member are arranged in the same plane, a notch is arranged inside the sleeve, and a plurality of protruding blocks are arranged along the length direction of the traction member, each protruding block can be engaged with the notch respectively, and the traction member is fixed relative to the sleeve by the engagement of the protruding block with the notch, and the connection between the sleeve and the traction member can be released by pushing the traction member relative to the sleeve, and the length of the traction member relative to the sleeve can be shortened by the engagement of the next protruding block with the notch.

[0019] In the orthodontic traction device for impacted teeth as described above, the hook portion is an annular hook portion, and the hook portion is provided with an opening to facilitate the entry of the traction rope.

[0020] In a second aspect, the present invention further provides a method for manufacturing an orthodontic traction device for impacted teeth, comprising the following contents:

[0021] The morphological data of the patient's impacted teeth are obtained through digital dental equipment (CBCT data), and the support component is modeled using computer-aided design software according to the relevant morphological data of the expected exposed part of the impacted teeth, and the support component with grooves is manufactured by 3D printing;

[0022] A telescopic member is manufactured, wherein one end of the telescopic member is provided with a hook portion capable of cooperating with the traction rope;

[0023] The supporting member is connected to the telescopic member, and the length of the telescopic member relative to the supporting member is adjustable.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1) The present invention is provided with a traction device, and a groove is provided on the support member. The support member is made by 3D printing according to the data of the expected exposed part of the patient's impacted tooth, so that the groove can be effectively fitted with the expected exposed part of the impacted tooth, which is conducive to the rapid fitting of the support member and the impacted tooth, shortening the operation time, and eliminating the need for repeated pasting and multiple injections of adhesive; while quickly fitting, the stability of the pasting can also be guaranteed, effectively avoiding the problem of the support member falling off during the traction process, facilitating clinical force operation, and helping to shorten the operation time.

[0026] 2) In the present invention, the supporting member is connected to the traction member, and the traction member is provided with a hook to cooperate with the traction rope. The traction member is pulled by the traction rope, and the length of the traction member is adjustable. In this way, when the impacted tooth gradually moves in the correct direction, the length of the traction member can be adjusted so that the length of the traction member protruding from the gum surface will not be too long, thereby reducing the discomfort caused to the patient.

[0027] 3) In the present invention, the telescopic member is fixedly connected to the supporting member, or is hingedly connected. For the impacted tooth that needs to adjust its direction, when the telescopic member is hingedly connected to the supporting member, not only can the supporting member fit with the exposed part of the impacted tooth, but the telescopic member can also be exposed from the gum surface. In this way, the direction of part of the impacted tooth can be adjusted first, and after the adjustment is completed, the impacted tooth can be smoothly pulled.

[0028] 4) In the present invention, a limiting portion is provided in the sleeve, and the limiting portion is provided with multiple layers. The traction member is also provided with a convex portion. During the movement of the traction member relative to the sleeve, the limiting portion can contact the convex portion to limit the traction member. A distance is set between two adjacent layers of limiting portions. The traction member is rotatable relative to the sleeve. The traction member can be limited by the limiting portions of each layer respectively. In this way, after the position of the traction member relative to the sleeve is adjusted, the traction member can be limited by the limiting portion to maintain the position of the traction member. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] Figure 1 It is a front view of an orthodontic traction device for impacted teeth in embodiment 1 of the present invention.

[0031] Figure 2 It is a schematic diagram of a sleeve in an orthodontic traction device for impacted teeth in embodiment 1 of the present invention.

[0032] Figure 3 It is a top view of a sleeve in an orthodontic traction device for impacted teeth in embodiment 1 of the present invention.

[0033] Figure 4 It is a schematic diagram of an orthodontic traction device for impacted teeth in a working state in the second embodiment of the present invention.

[0034] Figure 5 It is a top view of an orthodontic traction device for impacted teeth in the second embodiment of the present invention in a working state.

[0035] Figure 6 It is a structural schematic diagram of the cooperation between a sleeve and a traction member in an orthodontic traction device for impacted teeth in the second embodiment of the present invention.

[0036] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0037] Among them: 1. supporting member, 2. sleeve, 3. protrusion, 4. limiting block, 5. traction tube, 6. hook, 7. pin, 8. second lifting ear, 9. protrusion, 10. traction piece. DETAILED DESCRIPTION

[0038] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0040] As introduced in the background technology, the traction device for impacted teeth in the prior art has the problem that the exposed part of the non-impacted teeth does not fit well and is easy to fall off. In order to solve the above technical problem, the present invention proposes an orthodontic traction device for impacted teeth.

[0041] Embodiment 1

[0042] In a typical embodiment of the present invention, reference is made to Figure 1As shown, an orthodontic traction device for impacted teeth includes a support member 1, the support member 1 is provided with a groove, the groove can fit with the expected exposed part of the impacted tooth, the support member 1 is made by 3D printing according to the data of the expected exposed part of the patient's impacted tooth, the support member 1 is connected to the telescopic member, the length of the telescopic member relative to the support member is adjustable, a hook 6 is provided at one end of the telescopic member away from the support member 1 to cooperate with the traction rope, and the connection between the traction rope and the hook facilitates the traction rope to pull the entire device.

[0043] In some examples, for impacted teeth with a relatively correct orientation, there is no need to adjust their directions, and in this case, a solution of fixedly connecting the telescopic member to the supporting member 1 can be adopted.

[0044] In other examples, the telescopic member is movably connected to the supporting member 1 so that the telescopic member can swing along the tooth axis relative to the supporting member 1. At this time, the angle of the supporting member 1 relative to the telescopic member can be adjusted, which not only allows the supporting member 1 to fit the exposed part of the impacted tooth, but also allows the telescopic member to be exposed from the gum surface. In this way, the direction of part of the impacted tooth can be adjusted first, and after the adjustment is completed, the impacted tooth can be smoothly pulled.

[0045] In this embodiment, the telescopic member includes a sleeve 2, which can be a square tube or a round tube. Usually, the size of the sleeve 2 is smaller than the length of the supporting member. The sleeve 2 is connected to the supporting member 1. A traction member 10 is arranged in the sleeve 2. The traction member 10 is retractable relative to the sleeve 2 and rotatable relative to the sleeve 2. A hook 6 is arranged at the end of the traction member 10 away from the supporting member 1.

[0046] It is easy to understand that a limiting portion is provided in the sleeve 2 to limit the end of the traction member 10 away from the hook portion 6; along the length direction of the sleeve 2, multiple layers of limiting portions are provided, and the spacing between two adjacent layers of limiting portions is set so that after the traction member is rotated by a set angle, one end of the traction member can respectively cooperate with the limiting portions of each layer. The limiting portion is specifically a limiting block 4, and each layer includes two relatively arranged limiting blocks 4. Of course, there can also be three limiting blocks 4. The limiting blocks 4 of two adjacent layers of limiting portions are staggered or located in the same plane, as long as the limiting blocks 4 of each layer can respectively limit the traction member.

[0047] Correspondingly, a convex portion is provided at one end of the traction member 10 away from the hook portion 6, and the convex portion is specifically a bump 3. Two bumps 3 are provided at one end of the traction member away from the hook portion 6, and the two bumps 3 are arranged opposite to each other. The number and positions of the bumps 3 correspond to the number and positions of the limit blocks 4 on each layer, and the limit blocks 4 can contact with the convex portion 3 to limit the traction member.

[0048] For example, refer to Figure 3As shown, when three layers of limiting parts are arranged in the sleeve 2, two limiting blocks 4 are arranged in each layer, and the limiting blocks 4 of two adjacent layers are arranged at an interval of 90°. Of course, the angle between the limiting blocks 4 of two adjacent layers can also be other angles, as long as it can be ensured that there is space between the limiting blocks 4 of two adjacent layers, and the arc length of the space is greater than the length of the traction member protrusion 3, when it is necessary to shorten the length of the traction member, the traction member is pushed relative to the sleeve 2 and rotated relative to the sleeve 2. After the position of the traction member reaches the set height, the traction member 10 continues to be rotated to contact the protrusion 3 through the limiting block 4 of the upper layer so that the position of the traction member is maintained.

[0049] In this embodiment, the traction member 10 includes a traction tube 5, the length of which matches the length of the sleeve 2. The traction tube 5 is connected to the hook 6, and the inner diameter of the sleeve 2 at the limiting portion is 0-1 mm larger than the outer diameter of the traction tube 5, so that the fit between the traction tube 5 and the sleeve 2 is relatively tight.

[0050] It can be understood that, in order to achieve the movable connection between the support member 1 and the sleeve 2 , a pin 7 is provided on the side of the support member 1 facing the sleeve, and one end of the sleeve 2 is provided through the pin 7 .

[0051] Specifically, a first lifting ear is provided at the bottom of the support member 1. The first lifting ear is manufactured simultaneously during the manufacturing process of the support member. The first lifting ear supports the pin 7. Figure 2 As shown, a second ear 8 is provided at one end of the sleeve 2. After the first ear and the second ear 8 are aligned, the pin 7 is provided through the first ear and the second ear 8. In addition, notches are provided on both sides of one end of the sleeve 2 close to the supporting member 1 to avoid interference problems during the rotation of the sleeve 2 relative to the supporting member 1.

[0052] It can be understood that the traction tube 5 and the hook 6 are an integral structure, and the hook 6 is an annular hook, that is, the hook is bent in a ring shape, and an opening is provided on the hook 6 to facilitate the entry of the traction rope. The traction rope is usually an elastic rope, which is fixed to the tooth during operation. The traction rope pulls the hook 6, and then the traction member and the sleeve 2 are used to pull the supporting member, that is, the impacted tooth.

[0053] Among them, the supporting member 1 and the traction member are both made of biocompatible materials - resin materials, which ensure the safety and durability of the accessories in the oral cavity.

[0054] In the traction device provided in the present embodiment, a groove is provided on the support member 1, and the support member is made by additive manufacturing technology (3D printing) according to the data of the expected exposed part of the patient's impacted tooth, so that the groove can be effectively fitted with the expected exposed part of the impacted tooth, thereby realizing personalized production, which is conducive to the rapid fitting of the support member and the impacted tooth, shortening the operation time, and eliminating the need for repeated pasting and multiple injections of adhesive; while rapidly fitting, the stability of the pasting can also be ensured, effectively avoiding the problem of the support member falling off during the traction process; during the initial operation, the convex portion of the traction member cooperates with the limit block at the bottom of the sleeve, and during the process of the impacted tooth gradually moving in the correct direction, the length of the traction member can be adjusted so that the length of the traction member protruding from the gum surface will not be too long, thereby reducing the discomfort caused to the patient.

[0055] Embodiment 2

[0056] The difference between this embodiment and the first embodiment is that:

[0057] refer to Figure 4 , Figure 5 and Figure 6 As shown, the support member 1 is connected to the sleeve 2, and the two are fixedly connected. In a scheme where the sleeve 2 does not need to rotate relative to the support member 1, the traction device in this embodiment is selected, and the sleeve 2 and the support member 1 can be placed in the same plane. A notch is set inside the sleeve 2, and the traction member 10 can be extended relative to the sleeve 2. Along the length direction of the traction member 10, a plurality of protruding blocks 9 are set, and a distance is set between adjacent protruding blocks 9. The protruding blocks 9 can be engaged with the notch inside the sleeve. When the length of the traction member needs to be shortened, the traction member can be pushed toward the direction of the sleeve 2, and the next protruding block 9 is engaged with the notch inside the sleeve 2 to achieve the connection between the support member 1 and the sleeve 2.

[0058] Embodiment 3

[0059] This embodiment provides a method for manufacturing an orthodontic traction device for impacted teeth, including the following contents:

[0060] The morphological data of the patient's impacted teeth are obtained by digital dental equipment (existing 3D dental scanner: (CBCT oral and maxillofacial cone beam CT), and the support member 1 is modeled by computer-aided design software (CAD) according to the relevant morphological data of the expected exposed part of the impacted teeth, and the support member 1 with a groove is manufactured by 3D printing, and the size of the groove is adapted to the expected exposed part of the impacted teeth, so that the groove can fit the expected exposed part of the impacted teeth;

[0061] A telescopic member is made, one end of which is provided with a hook portion 6 capable of cooperating with the traction rope;

[0062] The supporting member is connected to the sleeve 2 in the telescopic member, and the length of the telescopic member relative to the supporting member is adjustable.

[0063] Alternatively, in some examples, the sleeve and the supporting member are an integrated structural member, both of which are manufactured by 3D printing. After the manufacturing is completed, the traction member is inserted into the sleeve, and the traction member is rotated so that the limiting portion inside the sleeve limits the traction member.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An orthodontic traction device for impacted teeth, characterized in that: The invention comprises a supporting member, wherein a groove is arranged on the supporting member, and the groove can fit with the expected exposed part of the impacted tooth. The supporting member is made by 3D printing according to the data of the expected exposed part of the impacted tooth of the patient. The supporting member is connected with a telescopic member, and the length of the telescopic member relative to the supporting member is adjustable. A hook is arranged at one end of the telescopic member away from the supporting member to cooperate with a traction rope.

2. An orthodontic traction device for impacted teeth according to claim 1, characterized in that: The telescopic member is fixedly connected to one side of the supporting member; Alternatively, the telescopic member is movably connected to one side of the supporting member so that the telescopic member can swing along the tooth axis surface relative to the supporting member.

3. An orthodontic traction device for impacted teeth according to claim 1, characterized in that: The telescopic member comprises a sleeve connected to the supporting member, a traction member is arranged in the sleeve, the traction member is telescopic relative to the sleeve, the traction member is rotatable relative to the sleeve, and the hook is arranged at one end of the traction member away from the supporting member.

4. An orthodontic traction device for impacted teeth according to claim 3, characterized in that: A limiting portion is provided in the sleeve to limit the end of the traction member away from the hook portion; Multiple layers of limiting parts are arranged along the length direction of the sleeve, and two adjacent layers of limiting parts are arranged at a distance, and each layer of limiting parts includes at least two limiting blocks.

5. An orthodontic traction device for impacted teeth according to claim 4, characterized in that: A convex portion is arranged at one end of the traction member away from the hook portion, and the limiting portion can contact the convex portion to limit the traction member, and the length of the convex portion is smaller than the distance between two adjacent limiting blocks in two adjacent layers of the limiting portions.

6. The orthodontic traction device for impacted teeth according to claim 4, characterized in that: The traction member comprises a traction tube, the length of which matches the length of the sleeve, the traction tube is connected to the hook portion, and the inner diameter of the sleeve at the limiting portion is 0-1 mm larger than the outer diameter of the traction tube.

7. An orthodontic traction device for impacted teeth according to claim 3, characterized in that: A pin is arranged on one side of the support member facing the sleeve, and one end of the sleeve passes through the pin; A first lifting ear is arranged at the bottom of the supporting member, and the first lifting ear supports the pin shaft. A second lifting ear is arranged at one end of the sleeve, and the pin shaft passes through the first lifting ear and the second lifting ear.

8. The orthodontic traction device for impacted teeth according to claim 3, characterized in that: The sleeve and the supporting member are arranged on the same plane, a notch is arranged inside the sleeve, and a plurality of protruding blocks are arranged along the length direction of the traction member, and each protruding block can be engaged with the notch respectively.

9. The orthodontic traction device for impacted teeth according to claim 1, characterized in that: The hook portion is an annular hook portion, and an opening is provided on the hook portion to facilitate the entry of the traction rope.

10. A method for manufacturing an orthodontic traction device for impacted teeth according to any one of claims 1 to 9, characterized in that: It includes the following: The morphological data of the patient's impacted teeth are obtained through digital dental equipment, and the supporting member is modeled using computer-aided design software according to the relevant morphological data of the expected exposed part of the impacted teeth, and the supporting member with grooves is manufactured by 3D printing; A telescopic member is manufactured, wherein one end of the telescopic member is provided with a hook portion capable of cooperating with the traction rope; The supporting member is connected to the telescopic member, and the length of the telescopic member relative to the supporting member is adjustable.

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