Traction piece and invisible orthodontic appliance for tooth traction

Abstract

The present invention discloses a traction member and invisible braces for tooth traction, and relates to the field of oral medical technology. The traction member of the present invention is used for invisible braces, and the traction member is an elastic member. The traction member is connected between the tooth to be corrected and the braces, and the connection portion between the traction member and the support component is provided with at least two clamping members along its length direction; the braces is provided with a mounting hole, the second end of the traction member is placed in the mounting hole, and the clamping member is clamped and fixed to the edge of the mounting hole. The traction member can be used in conjunction with the invisible braces, and the wrapping property of the invisible braces is used to form the entire dental arch as a whole, and together provide support and traction for the impacted tooth. In this way, there is no need to add orthodontic implant support, and invasive operations are reduced. The traction member is fixed by clamping members at different positions, and the traction force of its elastic adjustment section can be adjusted to improve the adaptability of the traction member; in addition, the present invention can be applied to the adjustment of the elongation movement after the impacted tooth erupts, which makes up for the deficiency of the invisible braces in the elongation movement.

Description

Technical Field

[0001] The present invention relates to the field of oral medical technology, and in particular to a traction piece and an invisible orthodontic appliance for tooth traction. Background Art

[0002] Impacted teeth are common dentofacial deformities that can occur in any tooth position in the entire dentition. These deformities can seriously affect facial aesthetics and chewing function, and often affect the health of adjacent teeth.

[0003] Invisible braces refer to a type of orthodontic device that can be put on or taken off by the patient and freely installed and removed by the doctor. Patients can put on and take off the appliance by themselves, it is easy to wash, can maintain the hygiene of the appliance and oral cavity, and does not affect the appearance. In recent years, with the development of orthodontic materials and biomechanics, invisible braces have become more and more popular with orthodontists and patients. However, the mechanical effect of invisible braces depends to a large extent on the complete wrapping of the crown of the target tooth, which makes the invisible braces obviously inefficient in pulling impacted teeth. In particular, after the impacted teeth are pulled out of the gums and are below the (occlusal) plane, the realization rate of invisible braces for tooth elongation movement is low. In order to achieve ideal tooth movement, related technologies use additional mechanical systems, such as a mechanical system that combines orthodontic implants and small coils, but this method will increase the discomfort and economic burden of patients. Summary of the Invention

[0004] The invention discloses a traction piece and an invisible appliance for tooth traction, which improve the correction effect of the invisible appliance on impacted teeth.

[0005] In order to solve the above problems, this application adopts the following technical solutions:

[0006] In a first aspect, the present invention provides a traction member for tooth traction, wherein the traction member is an elastic member, comprising a traction member body, the traction member body comprising a first end and a second end, the first end being used to connect to a tooth to be corrected, the second end being used to connect to an anchoring component, and the traction member being capable of applying a force from the tooth to be corrected toward the anchoring component to the tooth to be corrected;

[0007] The second end portion is provided with at least two clamping parts along its length direction, and the clamping parts can be clamped and fixed on the supporting component.

[0008] In the second aspect, the present invention also provides an invisible braces for tooth traction, comprising an braces body and the above-mentioned traction member, wherein the braces body is a support component, the braces body is provided with a mounting hole, the second end of the traction member body is placed in the mounting hole, and the clamping member is clamped and fixed to the edge of the mounting hole.

[0009] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0010] 1. The traction member disclosed in the present invention can be used in conjunction with an invisible brace appliance. The wrapping property of the invisible brace appliance forms the entire dental arch into a whole, and together they provide support and traction for impacted teeth. This eliminates the need for additional orthodontic implant support, reduces invasive procedures, and reduces the financial and mental burden on patients.

[0011] 2. The traction member used in the present invention is fixed by means of the clamping members at different positions of the second end portion thereof, and the traction force of the elastic adjustment section thereof can be adjusted, thereby improving the adaptability of the traction member;

[0012] 3. The present invention can also be used for adjusting the elongation movement of impacted teeth after eruption, making up for the shortcomings of invisible braces in elongation movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 It is a schematic diagram of the connection between the traction piece and the invisible braces;

[0015] Figure 2 1. It is a schematic diagram of the expanded state of the card connector;

[0016] Figure 3 1. It is a schematic diagram of the snap-in parts in the folded and fitted state;

[0017] Figure 4 This is a partial schematic diagram of the card connector;

[0018] Figure 5 This is a partial schematic diagram of the clamping part;

[0019] Figure 6 Schematic diagram of adjusting the traction member in the first state;

[0020] Figure 7 Schematic diagram of adjusting the traction member in the second state;

[0021] Figure 8 Schematic diagram of adjusting the traction member in the third state;

[0022] In the figure: 100 - traction member body, 110 - clamping member, 120 - hollow channel, 131 - main traction member, 132 - sub-traction member, 133 - side slide, 200 - orthodontic appliance body. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0024] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0025] The following is combined with Figures 1 to 5 , the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0026] The traction member described in the present invention is an elastic member, which includes a traction member body 100. The traction member body 100 includes a first end and a second end. The first end is used to connect the tooth to be corrected, and the second end is used to connect the support component. The traction member can apply a force from the tooth to be corrected toward the support component to the tooth to be corrected; the second end is provided with at least two clips 110 along its length direction, and the clips 110 can be clipped and fixed on the support component.

[0027] The traction member serves as the source of traction force for the impacted tooth. In actual use, the traction member is arranged between the impacted tooth to be corrected and the support component. The traction force of the traction member has an adjustable size function, so the traction member is an elastic member, which has elastic potential energy through deformation, and its material can be elastic materials such as rubber and spring. The traction member generates elastic force due to its own deformation, and this elastic force is the traction force acting on the impacted tooth. The size of the traction force can be adjusted by changing the degree of deformation. Specifically, in the present invention, the traction member is provided with at least two clamping members 110 along its length direction at the second end, and the clamping members 110 at different positions of the second end can be fixed to the support component respectively, so that the deformation length or deformation angle between the fixed point of the traction member on the impacted tooth and the fixed point on the support component changes, causing the traction force of the traction member to change; therefore, the adjustment of the traction force can be achieved by changing the fixed position of the second end and the support component.

[0028] The traction parts used in orthodontic correction in the related art are fixedly installed at a fixed point. After installation, they cannot be adjusted. If adjustment is required, another traction part must be provided. The same patient faces different correction situations at different correction stages, and the required traction force will change. In different correction processes, it is necessary to re-adaptively design the traction parts according to the required traction situation. Especially when used with invisible braces that are frequently replaced, the traction parts will be replaced more frequently, which will increase the cost of treatment, bring an economic burden to the patient, and bring more workload to the doctor. The traction part of the present invention has an adjustable function, which can provide an adaptive traction force for correcting impacted teeth. A plurality of clamping parts 110 are provided at the second end of the traction part body 100 to adjust the traction force of the entire traction part. The adjustment can be achieved by adjusting the fixed position of the traction part and the support component. Doctors can adjust the traction force immediately according to the correction situation, avoiding the time-consuming diagnosis, evaluation, design and other processes that affect the optimal correction adjustment time. While improving work efficiency, better correction results can also be achieved. In addition, since the number of traction parts is reduced, medical costs are greatly reduced, reducing patient treatment expenses.

[0029] It should be noted that while the traction member is an elastic member, a portion of the traction member may also be an elastic member, as long as the elasticity is achieved. When the entire traction member is an elastic member, the traction member body 100 may be made of an elastic polymer material. In some embodiments of the present invention, at least a portion of the traction member is made of an elastic material, and this portion is an elastic adjustment section. The elastic adjustment section is located at the first end, the second end, or between the first and second ends. As long as the traction force is provided, the elastic adjustment section may be made of elastic materials such as rubber and springs.

[0030] During orthodontic treatment, any force applied to the treated tooth to move it will inevitably generate an opposite force of equal magnitude at the same time. The situation that supports the reaction force caused by the movement of the corrected tooth is called "anchorage". The anchorage components play a role in fixing and supporting the traction components. Generally, in orthodontic treatment, the anchorage part is mainly composed of non-corrected teeth. The anchorage components are structural components in existing dental orthodontic technology, such as anchorage pins, brackets, invisible braces, etc. The palate and alveolar can also serve as anchorage components.

[0031] Specifically, the clip 110 includes a free end and a fixed end. The fixed end is fixedly connected to the outer surface of the traction member, and the free end protrudes from the outer surface of the traction member and can be deformed in a direction closer to the outer surface of the traction member. During installation, the free end of the clip 110 is squeezed and deformed by the support component structure. When the clip 110 reaches the corresponding fixed position, the clip 110 is no longer squeezed, and its free end returns to its natural state and is engaged with the structure on the support component.

[0032] Furthermore, the clip 110 is a sheet-like structure, and the clip 110 forms an undercut with the outer surface of the traction member body 100, and the clip 110 can fit against the outer surface of the traction member body 100. When the clip 110 is in a natural state, the clip 110 is in a tilted state, and a slot is formed between the clip 110 and the outer surface of the traction member body 100, which can be clipped and fixed on the support component, thereby fixing and limiting the traction member body 100. When the clip 110 is subjected to external pressure, the clip 110 can fit against the outer surface of the traction member body 100, so that the traction member body 100 can be moved and adjusted in the direction of the undercut, and when the traction member body 100 moves against the direction of the undercut, the clip 110 is in a tilted state and is clipped on the support component. It should be understood that the maximum traction force must be less than the minimum pulling force to move the second end to prevent the traction member body 100 from sliding easily.

[0033] In order to provide more options for adjusting the traction force, two rows of clips 110 are provided on the periphery of the traction member body 100, and the two rows of clips 110 are arranged in parallel or staggered. Since the clips 110 themselves have a certain volume, the opening and closing of the clips 110 require a certain amount of space. By staggering the arrangement, interference with the opening and closing actions of adjacent clips 110 in the length direction of the traction member body 100 can be avoided, and more options for adjusting the traction force can be provided.

[0034] To allow the second end portion to be movable and adjusted in both the forward and reverse directions during the aforementioned "undercut" movement, a hollow channel 120 is provided within the second end portion. A driving member is disposed within the hollow channel 120, which drives the engaging member 110 to engage the outer surface of the traction member body 100. The internal placement of the driving member eliminates the need for additional external mounting structures, simplifies the structure, and facilitates operation.

[0035] It should be understood that the driving member needs to achieve the purpose of retracting the clamping member 110. It can act on the clamping member 110 through pulling or suction, specifically through mechanical pulling, magnetic attraction, etc. The driving member is disposed in the interior of the second end portion, providing a pulling or suction force on the clamping member 110 from the inside, so that the clamping member 110 can be retracted and adhered to the outer surface of the traction member body 100. At the same time, the second end portion can move in both forward and reverse directions, so that the second end portion and the support component are detachably connected, facilitating the removal and reinstallation of the second end portion.

[0036] Specifically, the driving member includes a main pulling member 131 and a sub-pulling member 132. The main pulling member 131 is arranged along the length of the hollow channel 120 and extends beyond the outer surface of the elastic pulling member body 100. The sub-pulling member 132 is arranged between the main pulling member 131 and the clamping member 110. A side slide 133 is provided on the pulling member body 100, and the sub-pulling member 132 is disposed within the side slide 133. Preferably, to ensure smooth pulling of the sub-pulling member 132, the sub-pulling member 132 can be connected to the tilted end of the clamping member 110, and the trajectory of the side slide 133 is arranged to correspond to the retracted trajectory of the tilted end of the clamping member 110.

[0037] More preferably, the surface of the traction member body 100 is provided with a notch corresponding in shape and size to the clip 110. When the clip 110 is attached to the outer surface of the traction member body 100, the clip 110 fits into the corresponding notch, and the outer surface of the traction member body 100 is flat. This avoids the possibility that a protrusion still exists after the clip 110 is folded and attached, causing the second end to move unsmoothly and affecting operation. More preferably, the clip 110 and the traction member body 100 are an integrally formed structure, which facilitates the production of the traction member, so that the clip 110 can be directly processed on the traction member body 100 and a notch structure that fits it is formed.

[0038] In addition, when magnetic attraction is used to control the closing and fitting of the clamping member 110, corresponding magnets can be set inside the clamping member 110 and inside the traction member respectively, and the magnetic attraction force between the clamping member 110 and the traction member can be controlled by controlling the distance between the two magnets.

[0039] The present invention also provides an invisible brace appliance, comprising an appliance body 200 and the aforementioned traction member. The appliance body 200 serves as an anchoring component, and a mounting hole is defined in the appliance body 200. The second end of the traction member is positioned within the mounting hole, and the clip 110 is clipped and secured to the edge of the mounting hole. In some embodiments of the present invention, the traction member is used in conjunction with an invisible brace appliance (or invisible braces). The traction member utilizes the entire dentition and the invisible braces as anchoring, and uses the invisible braces as a support point to pull the impacted tooth.

[0040] The traction member in the present invention does not need clinical implant support, such as implant nails and support nails, which reduces invasive operations; for doctors, it reduces the complexity of the correction process and avoids more clinical operations; for patients, it reduces the cost of patients' medical treatment and improves the comfort of patients during the correction process. Secondly, the adjustment and force addition of the orthodontic appliance in the present invention is very simple. The patient can add force by himself and adjust the connection position between the second end of the traction member and the orthodontic appliance to generate different degrees of traction force. The patient can use a simple dynamometer to adjust the traction force by himself at regular intervals to keep the traction force within the appropriate range of the doctor's order. The traditional implant support device with a small circle curve requires patients to adjust it regularly, and the interval between follow-up visits is short. The orthodontic appliance in the present invention can appropriately reduce the frequency of patients' follow-up visits and extend the interval between patients' follow-up visits.

[0041] Furthermore, since the impacted teeth are still below the (occlusal) plane after eruption, they need to be elongated and moved. Invisible braces have certain limitations in the elongation and movement of teeth, and the realization rate is low. The invisible braces in the present invention can still adjust the force after the impacted teeth have erupted, which is beneficial to the elongation and movement of the impacted teeth, making up for the shortcomings of invisible braces in elongation and movement. In addition, the detachable connection structure of the above-mentioned traction member does not affect the removal and use of invisible braces. Orthodontic patients who are undergoing invisible correction need to maintain oral hygiene and need to remove their braces when eating. Traditional traction devices are mostly fixed devices that cannot be removed by the patients themselves, which is not conducive to the patients' oral hygiene and cleaning. The appliance in the present invention can control the connection of the second end through the traction member, so that the patient can remove the traction rope fixed to the invisible braces, which does not affect the patients' removal and replacement of invisible braces, and is beneficial to the patients' oral hygiene and cleaning.

[0042] Furthermore, the mounting hole may not be directly opened on the appliance body 200 , and a clamping ring structure may be provided on the appliance body 200 , with the inner hole of the clamping ring serving as the mounting hole.

[0043] The method for using the orthodontic appliance of the present invention comprises the following steps:

[0044] S10, preparation: performing a mechanical analysis on the tooth to be treated to determine the direction and magnitude of the traction force during the treatment process; simulating the wearing state of the invisible braces, and determining the connection position between the traction member and the braces according to the direction and magnitude of the traction force;

[0045] S20, wearing: fixing the pulling member to the surface of the impacted tooth by means of an adhesive, and then wearing the appliance. While wearing the invisible braces, the second end of the pulling member is passed through the mounting hole of the appliance and fixed to the mounting hole by means of the clamping member 110;

[0046] S30, adjustment: at different treatment stages, the fixing positions of the traction member and the appliance are adjusted according to the traction force required by the impacted tooth, and the traction force of the traction member is adjusted by changing the clamping and fixing position of the traction member.

[0047] Example:

[0048] The following example uses the front teeth as impacted teeth. Figures 1 to 5 ,

[0049] The traction member in this embodiment is made of elastic rubber material and is in the form of a long rope with cylindrical segments. Two rows of clips 110 are located at the second end of the traction member. These clips 110 are petal-shaped and normally in a tilted, open position. A retractable main traction rope is located within a hollow channel 120 at the second end. Thinner traction branches are located between the main traction rope and the petal-like structure on the outer wall. The main traction rope extends from the interior of the traction member and is positioned on the surface for easy pulling. When the main traction rope is pulled, it drives the branch traction rope to move, causing the petal-like structure to close. The petal-like structure then adheres to the surface of the traction member, forming an inverted closure.

[0050] The invisible braces in this embodiment are invisible braces, and a traction member mounting hole is opened at the position of the invisible braces corresponding to the upper front teeth. The second end of the traction member passes through the mounting hole, and the petal-shaped structure is clamped on the edge of the mounting hole, and the traction member is in a stretched state, so that it has traction force.

[0051] The following is an example of the traction method for the upper front teeth:

[0052] S10. Preparation: Perform a mechanical analysis on the upper front teeth to be treated to determine the direction and magnitude of the traction force during treatment. Based on the biomechanical analysis, the clinician selects the appropriate traction force direction and opens mounting holes in the corresponding direction (occlusal direction) of the invisible braces for future use.

[0053] S20, wearing: fix the traction member to the surface of the impacted tooth through the adhesive, and then wear the invisible braces. While wearing the invisible braces, pass the second end of the traction member through the mounting hole of the orthodontic appliance, and the petal-shaped structure slides along the mounting hole. During the sliding process, the petal-shaped structure is squeezed and contracted by the edge of the mounting hole. After one petal-shaped structure passes through, it returns to the raised state and forms an undercut with the traction member body 100; then select a suitable petal-shaped clamping member 110 to clamp it at the other end of the mounting hole, and the traction member and invisible braces are installed;

[0054] S30, adjustment: at different treatment stages, the fixing positions of the traction member and the appliance are adjusted according to the traction force required by the impacted tooth, and the traction force of the traction member is adjusted by changing the clamping and fixing position of the traction member.

[0055] Figure 6 、 Figure 7 and Figure 8 The figure shows the motion state of the traction member at the invisible braces installation hole. Figure 6 As shown, the main pulling rope is pulled toward the (occlusal) direction, and the traction member body 100 is pulled toward the (occlusal) direction at the same time to create a gap to facilitate the closing of the petal structure; if the traction member body 100 is directly pulled toward the (occlusal) direction, the traction force can be increased. Figure 7 As shown, when the main pulling rope is tightened, the petal-like structure of the outer wall of the traction member body 100 is completely closed. Figure 8 As shown, push the opening of the invisible braces toward the gum, remove the traction piece, or reduce the traction force to remove the invisible braces.

[0056] In summary, on the one hand, the present invention can be used in conjunction with invisible braces to provide additional auxiliary force for invisible braces to correct impacted teeth, thereby improving the correction effect, being easy to operate, and not interfering with the daily removal and wearing of invisible braces; on the other hand, through the adjustable traction force of the traction piece, the need for multiple re-equipping of the traction piece is avoided, and the replacement cycle of the traction piece is extended. Moreover, the patient can adjust the force by himself under the guidance of the doctor through the dynamometer, thereby reducing the complexity of the treatment process and making it convenient for the patient.

[0057] The above description is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed by the present invention, which should be covered by the scope of protection of the present invention.

Claims

1. A traction member for tooth traction, characterized in that: The traction member is an elastic member, comprising a traction member body (100), the traction member body (100) having a first end and a second end, the first end being used to connect to the tooth to be corrected, the second end being used to connect to the support component, the traction member being able to exert a force from the tooth to be corrected toward the support component on the tooth to be corrected; the second end being provided with at least two clamping members (110) along its length direction, the clamping members (110) being able to be clamped and fixed on the support component; A hollow channel (120) is provided in the second end portion, and a driving member is provided in the hollow channel (120); The driving member includes a main pulling member (131) and a sub-pulling member (132), wherein the main pulling member (131) is arranged along the length direction of the hollow channel (120), and the main pulling member (131) extends out of the traction member body (100); the sub-pulling member (132) is arranged between the main pulling member (131) and the clamping member (110), and the traction member body (100) is provided with a side slide (133), and the sub-pulling member (132) is arranged in the side slide (133); At least a portion of the traction member is made of elastic material.

2. The traction member for tooth traction according to claim 1, characterized in that: The clamping member (110) comprises a free end and a fixed end, the fixed end being fixedly connected to the outer surface of the traction member body (100), the free end protruding from the outer surface of the traction member body (100), and the free end being capable of deforming in a direction close to the outer surface of the traction member body (100).

3. The traction member for tooth traction according to claim 1, characterized in that: The clamping member (110) is a sheet-like structure, the clamping member (110) forms an undercut with the outer surface of the traction member body (100), and the clamping member (110) can be fitted to the outer surface of the traction member body (100).

4. The traction member for tooth traction according to claim 3, characterized in that: The driving member can drive the clamping member (110) to fit toward the outer surface of the traction member body (100).

5. The traction member for tooth traction according to claim 3, characterized in that: The clamping parts (110) are arranged in two rows on the periphery of the traction part body (100), and the two rows of clamping parts (110) are arranged in parallel or staggered.

6. The traction member for tooth traction according to claim 1, characterized in that: The clamping member (110) and the traction member body (100) are an integrally formed structure.

7. Invisible braces for tooth traction, characterized in that: The invention comprises an orthodontic appliance body (200) and a traction member as claimed in any one of claims 1 to 6, wherein the orthodontic appliance body (200) is an anchoring component, the orthodontic appliance body (200) is provided with a mounting hole, the second end of the traction member body (100) is placed in the mounting hole, and the clamping member (110) is clamped and fixed to the edge of the mounting hole.

8. The invisible braces for tooth traction according to claim 7, characterized in that: The appliance body (200) is provided with a snap ring, and the inner hole of the snap ring is a mounting hole.

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