Tooth correction system

Abstract

The embodiment of the utility model provides a tooth correction system. The tooth correction system comprises a first long-arm accessory and a second long-arm accessory which are respectively fixed on the surfaces of two teeth adjacent to a gap, and a first supporting piece fixed between the first long-arm accessory and the second long-arm accessory, the first long arm accessory comprises a first fixing part used for being fixed with the surface of a tooth and a first extension part connected with the first fixing part, and the second long arm accessory comprises a second fixing part used for being fixed with the surface of the tooth and a second extension part connected with the second fixing part; the two ends of the first supporting piece are connected to the surfaces of the sides, adjacent to each other, of the first extension part and the second extension part respectively. During use, at least part of the first extension part and at least part of the second extension part are located in a gingival area, and the surfaces, close to the gingival area, of the first extension part and the second extension part do not make contact with the gingival area.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of oral orthodontics, and in particular to a tooth correction system. Background Art

[0002] In orthodontics, the treatment of expanding, closing and maintaining space is an important part of the tooth correction process, which aims to improve tooth arrangement, occlusion and facial aesthetics. Expanding space is usually used to solve problems such as crowded teeth and uneven teeth; its main purpose is to increase the space between teeth so that the teeth can be arranged more neatly; closing space is a key step in orthodontic treatment, which aims to eliminate the gaps between teeth and align the teeth tightly; maintaining space between teeth is to keep the space between teeth stable, avoid tilting of adjacent teeth, prevent displacement of adjacent teeth, and leave space for children's teeth to erupt or adults to implant teeth. In addition, it can reduce the occurrence of necrotic pulp and improve oral aesthetics.

[0003] In clinical practice, traditional bracket therapy or invisible braces are used to correct the above-mentioned situation. However, both of these treatment methods apply force to the crowns. However, the tooth impedance center is located at the roots. Applying force only to the teeth will cause unwanted twisting of the teeth, especially in the case of closing the gap or expanding the gap. The movement of the teeth is driven by the movement of the crowns to drive the movement of the roots. Therefore, the movement of the roots lags behind the movement of the crowns. If the unwanted twisting of the teeth is too large, the treatment plan needs to be redesigned to correct the twisted teeth, which increases the treatment time and cost and brings a bad treatment experience to the patients.

[0004] Therefore, there is a need for a method that can expand the gap, close the gap, and maintain the gap while eliminating the undesirable torsion of the teeth, thereby reducing the cost of correction and improving the efficiency of correction. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a dental correction system that effectively solves the above-mentioned problems, and can solve the problem in the prior art that teeth are prone to unwanted twisting when expanding gaps, closing gaps, and maintaining gaps, so as to ensure accurate correction results.

[0006] To achieve the above-mentioned purpose, an embodiment of the present application provides a dental orthodontic system, comprising a first long-arm attachment and a second long-arm attachment for respectively fixing on the surfaces of two teeth adjacent to a gap, and a first support member fixed between the first long-arm attachment and the second long-arm attachment; the first long-arm attachment comprises a first fixing portion for fixing to the tooth surface and a first extension portion connected to the first fixing portion, the second long-arm attachment comprises a second fixing portion for fixing to the tooth surface and a second extension portion connected to the second fixing portion, and the two ends of the first support member are respectively connected to the side surfaces adjacent to each other of the first extension portion and the second extension portion; when in use, at least part of the first extension portion and at least part of the second extension portion are located in the gum area, and the surfaces of the first extension portion and the second extension portion adjacent to the gum area do not contact the gum area.

[0007] Preferably, the first support member is an elastic member; when in use, the first support member is in a stretched state to apply a corrective force to the first long arm attachment and the second long arm attachment for closing the gap; or, when in use, the first support member is in a compressed state to apply a corrective force to the first long arm attachment and the second long arm attachment for opening the gap.

[0008] Preferably, when the first support member is in a compressed state, both ends of the first support member are detachably connected to the first extension portion and the second extension portion.

[0009] Preferably, a receiving groove is provided on a surface of one side of the first extension portion and the second extension portion adjacent to each other, and the end portion of the first support member can be inserted into the receiving groove.

[0010] Preferably, there is a clearance fit between the end of the first support member and the accommodating groove.

[0011] Preferably, when the first support member is in a stretched state, both ends of the first support member are fixedly connected to the first extension portion and the second extension portion respectively.

[0012] Preferably, at least one reinforcement portion is provided in the middle of the first support member, and the reinforcement portion is any one of an "Ω"-shaped curve, a "U"-shaped curve, a "V"-shaped curve, a "W"-shaped curve, or a coil spring.

[0013] Preferably, the connection position of the first support member on the first extension portion corresponds to the impedance center of the tooth where the first long arm attachment is located; and / or, the connection position of the first support member on the second extension portion corresponds to the impedance center of the tooth where the second long arm attachment is located.

[0014] Preferably, it further comprises a second support member fixed between the first long arm attachment and the second long arm attachment, and two ends of the second support member are respectively connected to a side surface adjacent to each other of the first fixing portion and the second fixing portion.

[0015] Preferably, the force applying directions of the first support member and the second support member are the same.

[0016] Preferably, the first support member and the second support member are arranged in parallel.

[0017] Preferably, the invention further comprises a shell-like body having a plurality of tooth receiving cavities, wherein the shell-like body has a first avoidance portion for avoiding the first supporting member, and the first avoidance portion is a cavitation structure or a cutout structure.

[0018] Preferably, it further includes a shell-like body having a plurality of tooth receiving cavities, wherein the shell-like body has a first avoidance portion for avoiding the first support member and a second avoidance portion for avoiding the second support member, and the first avoidance portion and the second avoidance portion are one of a cavitation structure and a cutout structure.

[0019] Compared with the prior art, the present invention provides a system for orthodontic treatment of teeth.

[0020] The dental orthodontic system in the present application includes a first long arm attachment and a second long arm attachment for being respectively fixed on the surfaces of two teeth adjacent to a gap, and a first support member fixed between the first long arm attachment and the second long arm attachment. The first support member is located between the first extension part in the first long arm attachment and the second extension part in the second long arm attachment. When worn, the first extension part and the second extension part correspond to the patient's gum area, so that the point of application of the orthodontic force can be brought closer to the impedance center of the tooth through the first extension part and the second extension part, thereby making the tooth movement effect more efficient.

[0021] In addition, the first support member and the first extension portion and the second extension portion are detachably connected, which not only facilitates the doctor's operation in clinical practice, but also allows different first support members to be replaced according to current different correction needs during the correction process. There is no need to remove the first long arm attachment and the second long arm attachment from the teeth, so that the dental correction system in this application can switch between gap maintenance, gap closing and gap expansion during correction, or replace the first support member that can provide greater correction force in a correction situation, thereby improving the flexibility of correction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1 This is a schematic diagram of wearing a dental orthodontic system in Example 1 of the present application;

[0024] Figure 2 This is a schematic structural diagram of a first long arm attachment in Example 1 of the present application;

[0025] Figure 3 yes Figure 2 A schematic diagram of the structure of the first long arm attachment from another perspective;

[0026] Figure 4 yes Figure 2 Schematic diagram of the state in which the first long arm attachment is attached to the tooth surface;

[0027] Figure 5 This is a schematic diagram of the process of closing a gap in a dental orthodontic system according to the first embodiment of the present application;

[0028] Figure 6 This is a schematic diagram of another dental orthodontic system in the first embodiment of the present application during the process of expanding the gap;

[0029] Figure 7 is a schematic cross-sectional view of the longitudinal section of the first long arm attachment in an assembled state of the accommodation groove and the end portion of the first long arm attachment in one embodiment of the present application;

[0030] Figure 8 This is a schematic diagram of wearing a dental orthodontic system in Example 1 of the present application;

[0031] Figure 9 This is a schematic diagram of wearing another dental orthodontic system in Example 1 of the present application;

[0032] Figure 10 This is a schematic structural diagram of a dental orthodontic system in Example 2 of the present application;

[0033] Figure 11 This is a schematic structural diagram of another dental orthodontic system in Example 2 of the present application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, each embodiment of the present application will be described in detail below with reference to the accompanying drawings. However, it will be understood by those skilled in the art that in each embodiment of the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in the present application can be implemented. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation of the present application. The various embodiments can be combined with each other and referenced to each other under the premise of no contradiction.

[0035] The "posterior tooth area" mentioned in each embodiment of the present application is defined according to the classification of teeth in the second edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 36-38, including premolars and molars, which are displayed as teeth 4-8 using the FDI notation method, and the teeth in the anterior tooth area are displayed as teeth 1-3 using the FDI notation method. The teeth in the anterior tooth area include central incisors, lateral incisors, and canines. In addition, for the teeth in the deciduous tooth stage, the "posterior tooth area" is defined according to the classification of deciduous teeth in the second edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 40-41, including three categories: deciduous incisors, deciduous canines, and deciduous molars. Among them, deciduous incisors include deciduous central teeth and deciduous lateral incisors, and deciduous molars include first deciduous molars and second deciduous molars.

[0036] The shell-like body is provided with a number of cavities for accommodating multiple teeth, and is divided into lingual surface, labial surface, mesial surface and distal surface. Among them, the "lingual surface" is based on the naming of the various surfaces of the crown in the 2nd edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 35-36. The labial surface and buccal surface are the sides of the crown of the front teeth close to the lips, which are called labial surfaces, and the sides of the crown of the back teeth close to the cheek are called buccal surfaces. The lingual surface is the side of the crown of the front teeth and the back teeth close to the tongue, collectively referred to as the lingual surface. The mesial surface and distal surface are the two surfaces adjacent to the crown of the adjacent teeth, collectively referred to as the adjacent surfaces. The side closer to the midline of the face is called the mesial surface, and the side farther from the midline of the face is called the distal surface.

[0037] The following describes various embodiments of the present application in conjunction with the accompanying drawings.

[0038] Example 1:

[0039] refer to Figure 1 and Figure 2As shown, an embodiment of the present application provides a dental orthodontic system, comprising a first long arm attachment 1 and a second long arm attachment 2 for respectively fixing on the surfaces of two teeth adjacent to a gap, and a first support member 3 fixed between the first long arm attachment 1 and the second long arm attachment 2; the first long arm attachment 1 comprises a first fixing portion 11 for fixing to the tooth surface and a first extension portion 12 connected to the first fixing portion 11, the second long arm attachment 2 comprises a second fixing portion 21 for fixing to the tooth surface and a second extension portion 22 connected to the second fixing portion 21, and the two ends of the first support member 3 are respectively connected to the side surfaces of the first extension portion 12 and the second extension portion 22 adjacent to each other; when in use, at least part of the first extension portion 12 and at least part of the second extension portion 22 are located in the gum area, and the surfaces of the first extension portion 12 and the second extension portion 22 adjacent to the gum area do not contact the gum area. When worn, the first extension portion 12 and the second extension portion 22 correspond to the patient's gum area, so that the first extension portion 12 and the second extension portion 22 can make the point of application of the correction force closer to the impedance center of the tooth, thereby making the tooth movement effect more efficient.

[0040] The structural features of the first long arm attachment 1 and the second long arm attachment 2 in this application are basically the same. In order not to elaborate too much, the structure of the first long arm attachment 1 is used as an example. Figures 2 to 4 As shown, the first fixing portion 11 is the portion of the first long arm attachment 1 that is fixed to the tooth. The first fixing portion 11 can be used to fix the first long arm attachment 1 to the tooth adjacent to the gap, and the second fixing portion 21 can be used to fix the second long arm attachment 2 to the tooth on the other side of the gap. For example, it can be fixed to the adjacent tooth located in the extraction area. The bonding surface 111 of the first fixing portion 11 is similar in shape to the tooth surface and can be bonded and fixed to the tooth surface by light curing. The first extension portion 12 is the portion of the first long arm attachment 1 that extends toward the gum area. The first extension portion 12 can effectively increase the length of the attachment. The non-bonding surface 121 of the first extension portion 12 faces the gum and is spaced apart from the gum to avoid discomfort to the gum portion due to direct contact with the gum. Compared to traditional attachments bonded to teeth, the first long arm attachment 1 provided in this embodiment also has a portion corresponding to the gum due to the first extension portion 12. This can change the magnitude of the force or torque generated, and shift the point of force application from the crown part to the impedance center close to the tooth, thereby better achieving the purpose of tooth movement.

[0041] In practice, the length of the first extension portion 12 of the first long-arm attachment 1, which corresponds to the gums, can be designed based on the orthodontic patient's gum depth and tolerance. For orthodontic patients with deeper gums and higher tolerance, a longer attachment can be designed. Increasing the length of the portion of the attachment not bonded to the tooth provides a longer lever arm, thereby achieving better tooth movement results.

[0042] In combination with the patient's oral environment, in order to avoid the discomfort caused to the patient during use of the first long arm attachment 1, refer to Figure 4 As shown, the distance H between the edge of the first fixing portion 11 close to the gingival margin and the edge of the first extension portion 12 away from the gingival margin in the length direction of the first long arm attachment 1 can be 8 to 10 mm. In other words, the length of the portion of the first long arm attachment 1 that is not bonded to the teeth can be made 8 to 10 mm. Compared with ordinary attachments of about 4 mm, the overall length of the first long arm attachment 1 can be increased by more than double. In actual circumstances, the distance between the edge of the first fixing portion 11 close to the gingival margin and the edge of the first extension portion 12 away from the gingival margin can be 8 mm, 8.5 mm, 9 mm, 9.5 mm or 10 mm. The above distance values ​​can make the surface of the first extension portion 12 that cooperates with the shell-like body 6 near the impedance center of the tooth, thereby making the force applied to the tooth more precise and improving the correction effect.

[0043] In addition, a preset distance may be provided between the non-adhesive surface 121 and the adhesive surface 111 in the sagittal direction to form a clearance area for avoiding the gums. Figure 4 As shown, when the bonding surface 111 is bonded to the tooth, the distance B between the non-bonding surface 121 and the corresponding gingiva is greater than or equal to 1 mm. The bonding surface 111 located on the first extension portion 12 is spaced a certain distance from the bonding surface 111 located on the first fixing portion 11, thereby ensuring that the first extension portion 12 of the first long-arm attachment 1 corresponding to the gingiva remains non-contacting with the gingiva. This reduces the discomfort experienced by orthodontic patients when using the first long-arm attachment 1 for orthodontic treatment. During the manufacturing process of the first long-arm attachment 1, the portion of the first extension portion 12 facing the gingiva can be resected, and the sagittal resection depth can be greater than 1 mm. In actual practice, the sagittal resection depth of the portion of the first extension portion 12 facing the gingiva can also be less than 1 mm, as long as the non-bonding surface 121 of the first extension portion 12 does not come into contact with the gingiva of the orthodontic patient when the first long-arm attachment 1 is bonded.

[0044] Further optimization, continue to refer to Figure 4As shown, the distance C between the edge of the bonding surface 111 near the gingival margin and the corresponding gum line 31 can be 1 to 1.5 mm. Specifically, the edge of the bonding surface 111 at the bottom of the tooth maintains a certain distance from the corresponding gum line 31, so that the bonding surface 111 is located 1 to 1.5 mm above the corresponding gum line. This ensures that the portion of the first long-arm attachment 1 bonded to the tooth does not affect the gums, preventing discomfort to the orthodontic patient's gums, while also ensuring the bonding and fixing effect of the first long-arm attachment 1.

[0045] In addition, in one embodiment of the present invention, the first support member 3 is a rigid member, which is used when a gap needs to be maintained. Of course, it is understandable that in other embodiments, the first support member 3 may also be an elastic member. Specifically, refer to Figure 5 As shown in the figure, the movement changes of the teeth under the action of the first support member 3 during use are shown. In this embodiment, when the dental orthodontic system is in use, the first support member 3 is in a stretched state to apply a correction force to the first long arm attachment 1 and the second long arm attachment 2 for closing the gap. In the process of restoring its original shape, the first support member 3 applies a force to the teeth adjacent to the gap toward the gap by the first long arm attachment 1 and the second long arm attachment 2, thereby Figure 5 It can be seen from the figure that the gap width is h1 when the tooth correction system is just worn, and after wearing it for a period of time, the gap width is h2, h1>h2. Figure 6 As shown in the figure, the movement changes of the teeth under the action of the first support member 3 during use are shown. In this embodiment, when the dental orthodontic system is in use, the first support member 3 is in a compressed state to apply a correction force to the first long arm attachment 1 and the second long arm attachment 2 to open the gap. In the process of restoring its original shape, the first support member 3 applies a force to the teeth adjacent to the gap to move away from the gap by the first long arm attachment 1 and the second long arm attachment 2. Figure 6 It can be seen from the figure that the gap width is h3 when the dental orthodontic system is just worn. After wearing it for a period of time, the gap width is h4, and h4>h3.

[0046] In order to make it easier for doctors to operate in the clinic, the two ends of the first support member 3 are detachably connected to the first extension portion 12 and the second extension portion 22, especially when the first support member 3 is in a compressed state during use. In this case, the detachable connection structure will not cause the first support member 3 to fall off from the first extension portion 12 and the second extension portion 22. Figure 7As shown, a receiving groove 4 is provided on the surface of one side adjacent to the first extension portion 12 and the second extension portion 22, into which the end portion 31 of the first support member 3 can be inserted. This structural design is simple, easy to manufacture, and convenient for doctors to operate in clinical practice. Further preferably, a clearance fit is formed between the end portion 31 of the first support member 3 and the receiving groove 4. A clearance fit means that the tolerance band within the receiving groove 4 is above the tolerance band of the end portion 31 of the first support member 3, that is, the actual size of the receiving groove 4 is always larger than the actual size of the end portion 31 of the first support member 3. Further, to ensure the stability of the end portion 31 of the first support member 3 within the receiving groove 4 and prevent it from shaking, and to ensure that the end portion 31 of the first support member 3 can smoothly enter the receiving groove 4 during assembly, the actual size of the receiving groove 4 is slightly larger than the actual size of the end portion 31 of the first support member 3. In other words, the cross-sectional area of ​​the receiving groove 4 is slightly larger than the cross-sectional area of ​​the end portion 31 of the first support member 3. Preferably, the gap between the accommodating groove 4 and the end 31 of the first support member 3 is between 0.01 mm and 0.3 mm. This detachable connection method is not only convenient for doctors to operate in the clinic, but also allows different first supports 3 to be replaced according to different current correction needs during the correction process. There is no need to remove the first long arm attachment 1 and the second long arm attachment 2 from the teeth. The dental correction system of the present application can switch between gap maintenance, gap closing and gap expansion during correction, or replace the first support member 3 that can provide greater correction force in one correction situation, thereby improving the flexibility of correction. For example, in order to reduce the pain felt by patients during the correction process, a first support member 3 with a smaller elastic modulus will be used or the first support member 3 will be placed in a smaller compression state when the gap is expanded. After the first support member 3 restores its original shape, it can allow the teeth to move slightly, but this smaller movement cannot move the teeth to the target position. A new first support member 3 needs to be replaced to allow the teeth to continue to move. In this case, there is no need to completely remove the first long arm attachment 1 and the second long arm attachment 2 from the teeth. It is only necessary to replace the first support member 3 through the detachable connection structure to continue to allow the teeth to move.

[0047] In addition, in another implementation of this embodiment, when the first support member 3 is in a stretched state, the two ends of the first support member 3 are fixedly connected to the first extension portion 12 and the second extension portion 22, respectively. In one case, the first long arm attachment 1 and the second long arm attachment 2 are made of resin or ceramic material, and the first support member 3 is made of metal material. The first support member 3 is fixed to the first long arm attachment 1 and the second long arm attachment 2, respectively, by bonding, welding, or cross-linking. Since the first support member 3 applies a pulling force to the teeth toward the gap through the first long arm attachment 1 and the second long arm attachment 2 when the gap needs to be closed, the fixed connection setting can effectively prevent the first support member 3 from separating from the first long arm attachment 1 and the second long arm attachment 2 during use, ensuring that the correction can proceed normally.

[0048] In another embodiment, reference Figure 1 and Figure 8 As shown, at least one reinforcement portion 32 is provided in the middle of the first support member 3. The reinforcement portion 32 can be any of an Ω-shaped curve, a U-shaped curve, a V-shaped curve, a W-shaped curve, or a coil spring. This structure can impart a deformation recovery force in a certain direction and magnitude to the first support member 3, thereby enhancing the force exerted by the first support member 3.

[0049] In another embodiment, reference Figure 4 As shown, the connection position of the first support member 3 on the first extension portion 12 corresponds to the impedance center P of the tooth where the first long arm attachment 1 is located; and / or, the connection position of the first support member 3 on the second extension portion 22 corresponds to the impedance center P of the tooth where the second long arm attachment 2 is located. Preferably, the connection position of the first support member 3 on the first extension portion 12 corresponds to the impedance center P of the tooth where the first long arm attachment 1 is located, and the connection position of the first support member 3 on the second extension portion 22 corresponds to the impedance center P of the tooth where the second long arm attachment 2 is located, so that the adjacent teeth on both sides of the gap can translate as a whole or stabilize in the current position without rotation.

[0050] In another embodiment, to increase the control of the orthodontic force on the tooth, reference Figure 9As shown, the dental orthodontic system also includes a second support member 5 fixed between the first long arm attachment 1 and the second long arm attachment 2. The two ends of the second support member 5 are respectively connected to the adjacent side surfaces of the first fixing portion 11 and the second fixing portion 21. The two ends of the second support member 5 are detachably connected to the first fixing portion 11 and the second fixing portion 21. In particular, when the second support member 5 is in a compressed state during use, the detachable connection structure prevents the second support member 5 from falling off the first fixing portion 11 and the second fixing portion 21. The specific detachable method is the same as the arrangement of the end 31 of the first support member 3 on the first extension portion 12 and the second extension portion 22. Specifically, a receiving groove 4 is provided on the adjacent side surfaces of the second fixing portion 21 and the second fixing portion 21, and the end of the second support member 5 can be inserted into the receiving groove 4. This structural design is simple, easy to manufacture, and convenient for doctors to operate in clinical practice. Further preferably, the end of the second support member 5 is clearance-fitted with the receiving groove 4. A clearance fit means that the tolerance band within the receiving groove 4 is above the tolerance band at the end of the second support member 5. That is, the actual size of the receiving groove 4 is always larger than the actual size of the end of the second support member 5. To further clarify, to ensure the stability of the end of the second support member 5 within the receiving groove 4 and prevent it from shaking, and to ensure that the end of the second support member 5 can smoothly enter the receiving groove 4 during assembly, the actual size of the receiving groove 4 is slightly larger than the actual size of the end of the second support member 5. In other words, the cross-sectional area of ​​the receiving groove 4 is slightly larger than the cross-sectional area of ​​the end of the second support member 5. Preferably, the gap between the receiving groove 4 and the end of the second support member 5 is between 0.01mm and 0.3mm. When the first support member 3 and the second support member 5 are detachably connected to the first long arm attachment 1 and the second long arm attachment 2, this detachable connection method is not only convenient for doctors to operate in clinical practice, but also different first support members 3 and second support members 5 can be replaced according to current different correction needs during the correction process. There is no need to remove the first long arm attachment 1 and the second long arm attachment 2 from the teeth, so that the dental correction system in the present application can switch between gap maintenance, gap closing and gap expansion during correction, or replace the first support member 3 and the second support member 5 that can provide greater correction force in a correction situation, thereby improving the flexibility of correction.For example, in order to reduce the pain felt by patients during the correction process, when expanding the gap, the first support member 3 and the second support member 5 with a smaller elastic modulus will be used, or the first support member 3 and the second support member 5 will be in a smaller compression state. After the first support member 3 and the second support member 5 restore their original shape, the teeth can move slightly, but this smaller movement cannot move the teeth to the target position. New first support members 3 and second support members 5 need to be replaced to allow the teeth to continue to move. In this case, there is no need to completely remove the first long arm attachment 1 and the second long arm attachment 2 from the teeth. It is only necessary to replace the first support member 3 and the second support member 5 through the detachable connection structure to continue to allow the teeth to move.

[0051] In response to different correction needs, the first support member 3 and the second support member 5 can be set to have the same force direction, or different force directions. For example, when the teeth do not need to be rotated and need to complete overall translation or remain in the current position, the force directions between the first support member 3 and the second support member 5 are the same. At this time, the teeth with the first long arm attachment and the second long arm attachment attached can achieve better movement efficiency. Or for teeth that have already tilted, it is necessary to apply a torsional force to make the teeth upright. In this case, the force directions between the first support member 3 and the second support member 5 are different, and a torque can be designed to twist the teeth to make them upright.

[0052] In order to make the force application directions of the first support member 3 and the second support member 5 substantially parallel to each other and avoid generating forces / torques in other undesirable directions, the first support member 3 and the second support member 5 are arranged in parallel.

[0053] Example 2:

[0054] The dental orthodontic system in the present application also includes a shell-shaped body 6 having multiple tooth receiving cavities. The shell-shaped body 6 can cover all teeth on the jaw or part of the teeth on the jaw. The shell-shaped body 6 can be an invisible orthodontic device in the prior art. In addition to applying orthodontic force to teeth that are not bonded to the first long arm attachment 1 and the second long arm attachment 2, the shell-shaped body 6 can also cover the first long arm attachment 1 and the second long arm attachment 2, and assist the first support member 3 in applying force to teeth that are bonded to the first long arm attachment 1 and the second long arm attachment 2.

[0055] In order to enhance the wrapping force of the shell body 6 on the teeth, the edge of the tooth receiving cavity of the shell body 6 can be extended toward the gum to form an extension portion 64. The shell body 6 has a first cavity 61 including a first long arm attachment 1 and a second cavity 62 of the second long arm attachment 2. When there is only the first support member 3 in the dental orthodontic system, refer to Figure 10As shown, the shell-like body 6 has a first avoidance portion 63 for avoiding the first support member 3, that is, the first avoidance portion 63 is provided at the position of the extension portion 64 corresponding to the position of the first support member 3, and the first avoidance portion 63 is a cavitation structure or a cutout structure. The cavitation structure is a cavity structure formed by the shell-like body 6 protruding toward the distal tooth direction, and the cutout structure is an opening structure provided at the position of the shell-like body 6 corresponding to the first avoidance portion 63, which can be obtained by cutting on the shell-like body 6. Figure 10 The first avoidance portion 63 is shown as a cutout structure. The setting of the first avoidance portion 63 can avoid the influence of the shell-like body 6 on the force applied to the first support member 3, thereby making the correction result more accurate.

[0056] In another case, for the case where the dental orthodontic system has both the first support 3 and the second support 5, refer to Figure 11 As shown, the shell-like body 6 has a first relief portion 63 that avoids the first support member 3 and a second relief portion 65 that avoids the second support member 5. Similarly, the first relief portion 63 is provided at the position of the extension portion 64 corresponding to the position of the first support member 3, and the second relief portion 65 is provided at the position of the tooth receiving cavity corresponding to the position of the second support member 5. The first relief portion 63 and the second relief portion 65 have either a cavitary structure or a notch structure. It is understood that the first relief portion 63 and the second relief portion 65 can be configured as either a cavitary structure or a notch structure, or one of them can be configured as a cavitary structure and the other as a notch structure.

[0057] It should be noted that the above embodiments can be freely combined as needed to form different new implementation plans without causing any contradiction. The implementation plans formed by such combination are all within the scope of protection of the present utility model. In order to save the length of the application text, they will not be repeated here.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

[0059] Similarly, the above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A dental correction system, characterized in that: The invention comprises a first long arm attachment and a second long arm attachment for respectively fixing on the surfaces of two teeth adjacent to a gap, and a first support member fixed between the first long arm attachment and the second long arm attachment; the first long arm attachment comprises a first fixing portion for fixing to the tooth surface and a first extension portion connected to the first fixing portion; the second long arm attachment comprises a second fixing portion for fixing to the tooth surface and a second extension portion connected to the second fixing portion; and both ends of the first support member are respectively connected to the side surfaces of the first extension portion and the second extension portion adjacent to each other; During use, at least a portion of the first extension portion and at least a portion of the second extension portion are located in the gum area, and surfaces of the first extension portion and the second extension portion adjacent to the gum area do not contact the gum area.

2. The dental orthodontic system according to claim 1, wherein: The first support member is an elastic member; when in use, the first support member is in a stretched state to apply a corrective force to the first long arm attachment and the second long arm attachment for closing the gap; or, In use, the first support member is in a compressed state to apply a corrective force to the first and second long arm attachments for opening the gap.

3. The dental correction system according to claim 2, wherein: When the first supporting member is in a compressed state, the two ends of the first supporting member are detachably connected to the first extension portion and the second extension portion.

4. The dental correction system according to claim 3, wherein: An accommodating groove is provided on a surface of one side of the first extension portion and the second extension portion adjacent to each other, and the end portion of the first support member can be inserted into the accommodating groove.

5. The dental correction system according to claim 4, wherein: There is a clearance fit between the end of the first support member and the accommodating groove.

6. The dental correction system according to claim 2, wherein: When the first support member is in a stretched state, both ends of the first support member are fixedly connected to the first extension portion and the second extension portion respectively.

7. The dental orthodontic system according to claim 1, wherein: At least one reinforcement portion is provided in the middle of the first support member, and the reinforcement portion is any one of an "Ω"-shaped curve, a "U"-shaped curve, a "V"-shaped curve, a "W"-shaped curve, or a coil spring.

8. The dental orthodontic system according to claim 1, wherein: The connection position of the first support member on the first extension portion corresponds to the impedance center of the tooth where the first long arm attachment is located; and / or, the connection position of the first support member on the second extension portion corresponds to the impedance center of the tooth where the second long arm attachment is located.

9. The dental orthodontic system according to claim 1, wherein: It also includes a second support member fixed between the first long arm attachment and the second long arm attachment, and two ends of the second support member are respectively connected to a side surface adjacent to the first fixing part and the second fixing part.

10. The dental orthodontic system according to claim 9, wherein: The force applying directions of the first supporting member and the second supporting member are the same.

11. The dental orthodontic system according to claim 9, wherein: The first supporting member and the second supporting member are arranged in parallel.

12. The dental orthodontic system according to any one of claims 1 to 8, characterized in that: It also includes a shell-shaped body with a plurality of tooth receiving cavities, wherein the shell-shaped body has a first avoidance portion for avoiding the first support member, and the first avoidance portion is a cavitation structure or a cutout structure.

13. The dental orthodontic system according to any one of claims 9 to 11, characterized in that: It also includes a shell-like body with multiple tooth receiving cavities, the shell-like body has a first avoidance portion for avoiding the first support member and a second avoidance portion for avoiding the second support member, the first avoidance portion and the second avoidance portion are one of a cavitation structure or a cutout structure.

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