Dental appliance
By designing the traction components and fixation parts of the orthodontic appliance, and utilizing cobalt-chromium alloy materials and molar supports, the problems of tooth elongation and poor comfort in existing technologies have been solved, achieving effective jaw correction and improved comfort.
Patent Information
- Application Number
- CN202422967193.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-02
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-02
AI Technical Summary
Existing treatments for posterior crossbite have problems such as tooth elongation, complex operation, poor comfort, and limited applicability. In particular, for cases with multiple posterior crossbites, existing devices are difficult to effectively correct and affect facial profile.
A dental appliance was designed, including a fixation component, a connector, and a traction assembly. The appliance applies corrective force to the affected tooth to correct occlusion via a traction hook and a traction line. The traction end is located on the side of the affected tooth's gingival margin away from the occlusal surface to prevent tooth elongation. The appliance is made of cobalt-chromium alloy. The connector and traction hook are integrally cast. The anchorage tooth provides support for the molar.
It effectively prevents the affected teeth from elongating during orthodontic treatment, improves patient comfort and orthodontic results, reduces interference with occlusion, is suitable for cases of multiple posterior teeth crossbite, and improves orthodontic efficiency and patient compliance.
Smart Images
Figure CN223542008U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of orthodontic technology, and more specifically, to an orthodontic appliance. Background Technology
[0002] Posterior crossbite is a common malocclusion. Based on the buccal-lingual positional relationship of the upper and lower posterior teeth, it can be divided into orthognathic crossbite and reverse crossbite. Orthognathic crossbite occurs when the lingual slope of the upper posterior teeth is located on the buccal side of the buccal slope of the lower posterior teeth, with no occlusal contact on the jaw surfaces. Reverse crossbite occurs when the buccal slope of the upper posterior teeth occludes with the lingual slope of the lower posterior teeth, with no occlusal contact on the jaw surfaces. The harms caused by crossbite to patients include: reduced chewing efficiency, facial asymmetry, and temporomandibular joint disorder.
[0003] In clinical practice, the main treatment methods for unlocking occlusion include intermaxillary traction with elastic bands, TPA-welded traction hooks, and implant anchorage traction. Intermaxillary traction with elastic bands generally requires the normal side occlusal pad to open the bite, while the working side occlusion has no contact. During the unlocking process, the affected teeth may elongate, leading to an increase in posterior height, which in turn further worsens the facial profile of patients with high-angle mandibular retrusion. Furthermore, patients need to change the traction elastic bands daily, requiring high patient compliance and causing considerable discomfort and inconvenience. TPA-welded traction hooks are mainly suitable for unlocking caused by buccal inclination of the maxillary posterior teeth, but not for unlocking cases with lingual inclination of the mandibular posterior teeth, or cases where the affected teeth are elongated. In cases of multiple posterior teeth unlocking, TPA-welded traction hooks may have insufficient anchorage, affecting the orthodontic efficiency and effect. Implant anchorage traction has high requirements for the implantation site, high clinical operation difficulty, and risks such as implant dislodgement. Moreover, implant placement is an invasive procedure that can cause pain and reduce patient comfort. Therefore, there is an urgent clinical need for a non-invasive posterior crossbite correction device that can prevent posterior tooth elongation. Utility Model Content
[0004] This invention aims to at least partially solve one of the aforementioned technical problems in the prior art. To this end, this invention proposes a dental appliance that can correct locked occlusion of affected teeth and prevent tooth elongation.
[0005] A dental appliance according to an embodiment of the present invention includes: a plurality of fixation members, a connector, and a traction assembly. The plurality of fixation members are adapted to be fixed one-to-one with a plurality of anchorage teeth, and the plurality of anchorage teeth include at least one pair of corresponding teeth. The connector is located on the lingual side of each fixation member and is connected to each fixation member. The traction assembly includes: a traction hook, a connecting buckle, and a traction line. The traction hook has a traction end and a connecting end. The traction end is located on the lingual side of the affected tooth and the connecting end is connected to the connector, or the traction end is located on the buccal side of the affected tooth and the connecting end is connected to the fixation member. The connecting buckle is bonded to the side of the affected tooth facing or away from the traction end. The traction end is connected to the connecting buckle through the traction line to apply a corrective force to the affected tooth to correct occlusal locking. In the vertical direction, the traction end is located on the side of the corresponding affected tooth's gingival margin away from the occlusal surface.
[0006] According to the embodiment of the present invention, the traction end of the traction hook is connected to the connecting buckle bonded to the affected tooth via a traction line. The traction end can apply a corrective force to the affected tooth to correct the locked jaw, thereby repositioning the affected tooth into the alveolar bone and thus correcting the locked jaw. Since the traction end is located on the side of the gingival margin of the corresponding affected tooth away from the occlusal surface, the corrective force includes a gingival indentation force, which can effectively prevent the affected tooth from elongating during the orthodontic process.
[0007] According to some embodiments of the present invention, in the vertical direction, the height difference between the traction end and the gingival margin is 4mm to 8mm.
[0008] According to some embodiments of the present invention, when the traction end is located on the lingual side of the affected tooth, the distance between the traction end and the lingual side of the affected tooth is 1mm to 3mm; when the traction end is located on the buccal side of the affected tooth, the distance between the traction end and the buccal side of the affected tooth is 1mm to 3mm.
[0009] According to some embodiments of this utility model, the traction line is a chain-like rubber band.
[0010] According to some embodiments of the present invention, the fixing member is constructed with a ring, and the fixing member is bonded to the crown of the anchoring tooth and avoids the occlusal point of the anchoring tooth.
[0011] According to some embodiments of the present invention, the connector includes: a left connecting rod, a right connecting rod, and a support rod. The left connecting rod is connected to the fixing member on the left side of the center line; the right connecting rod is connected to the fixing member on the right side of the center line; and the support rod is connected between the left connecting rod and the right connecting rod.
[0012] According to some embodiments of this utility model, multiple fixing parts, connecting parts and traction hooks are integrally cast.
[0013] According to some embodiments of this utility model, the materials of the plurality of fixing members, the connecting members and the traction hook are cobalt-chromium alloy.
[0014] According to some embodiments of the present invention, the anchorage tooth and the affected tooth are located on the same jaw side, and the anchorage tooth is a molar located in front of the affected tooth.
[0015] According to some embodiments of the present invention, the number of traction components is multiple, with two traction components corresponding to each affected tooth, and in the two traction components corresponding to the affected tooth, the traction end of one traction component is located on the lingual side of the affected tooth, and the traction end of the other traction component is located on the buccal side of the affected tooth.
[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of a dental appliance according to an embodiment of the present invention located in the maxilla of the oral cavity;
[0018] Figure 2 This is a schematic diagram of a dental appliance located in the lower jaw of the mouth according to an embodiment of the present invention.
[0019] Figure label:
[0020] Fixing component 1; Connecting component 2; Left connecting rod 21; Right connecting rod 22; Support rod 23;
[0021] Towing hook 31; Towing end 311; Connecting end 312;
[0022] 10 orthodontic appliances;
[0023] 20 anchored teeth; 30 affected teeth. Detailed Implementation
[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.
[0025] In the description of this utility model, it should be understood that the terms "thickness", "upper", "lower", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0028] The following is combined with Figure 1 and Figure 2 Detailed description of the orthodontic appliance 10 according to an embodiment of the present invention.
[0029] Reference Figure 1 and Figure 2 As shown, the orthodontic appliance 10 according to an embodiment of the present invention includes: a plurality of fixation members 1, a connector 2, and a traction assembly. The plurality of fixation members 1 are adapted to be fixed one-to-one with a plurality of anchorage teeth 20, and the plurality of anchorage teeth 20 include at least a pair of teeth with the same name. The connector 2 is located on the lingual side of each fixation member 1 and is connected to each fixation member 1. The traction assembly includes: a traction hook 31, a connecting buckle, and a traction line. The traction hook 31 has a traction end 311 and a connecting end 312. The traction end 311 is located on the lingual side of the affected tooth 30 and the connecting end 312 is connected to the connector 2, or the traction end 311 is located on the buccal side of the affected tooth 30 and the connecting end 312 is connected to the fixation member 1. The connecting buckle is bonded to the side of the affected tooth 30 facing or away from the traction end 311. The traction end 311 is connected to the connecting buckle through the traction line to apply a corrective force to the affected tooth 30 to correct the occlusion, so that the affected tooth 30 is repositioned into the alveolar bone, thereby achieving the correction of the occlusion of the affected tooth 30.
[0030] It is understandable that the anchorage tooth 20 is a healthy tooth in the patient's mouth. There are multiple anchorage teeth 20, and multiple anchorage teeth 20 can jointly support the orthodontic appliance 10. While the traction end 311 applies the corrective force to the affected tooth 30 through the traction wire to correct the occlusion, the traction end 311 will be subjected to the reaction force of the corrective force. The reaction force received by the traction end 311 can be transmitted to the corresponding fixation 1 through the connecting end 312, and then distributed to other fixation 1 through the connecting part 2, so as to avoid excessive force on the anchorage tooth 20 by a single fixation 1, and reduce the risk of displacement and damage of the anchorage tooth 20.
[0031] When the locked occlusion is caused by the affected tooth 30 tilting towards the buccal side, the traction end 311 can be placed on the lingual side of the affected tooth 30, that is, on the side of the affected tooth 30 away from the buccal side. When the traction end 311 applies orthodontic force to the affected tooth 30 through the traction line, the orthodontic force includes a horizontal traction force towards the patient's tongue to pull the affected tooth 30 back towards the lingual side, thereby relieving the locked occlusion of the affected tooth 30. When the locked occlusion is caused by the affected tooth 30 tilting towards the lingual side, the traction end 311 can be placed on the buccal side of the affected tooth 30, that is, on the side of the affected tooth 30 away from the lingual side. When the traction end 311 applies orthodontic force to the affected tooth 30 through the traction line, the orthodontic force includes a horizontal traction force towards the patient's cheek to pull the affected tooth 30 back towards the buccal side, thereby relieving the locked occlusion of the affected tooth 30.
[0032] In the vertical direction (i.e.) Figure 1 and Figure 2 (Perpendicular to the plane of the paper), the traction end 311 is located on the side of the gingival margin of the corresponding tooth 30 away from the occlusal surface. When the traction end 311 applies corrective force to the tooth 30 through the traction wire to correct the locked occlusion, the corrective force includes gingival indentation force (i.e., the direction from the occlusal surface to the gingiva) to prevent the tooth 30 from elongating during the treatment. Specifically, refer to... Figure 1 As shown, when the affected tooth 30 is located in the patient's maxilla, the traction end 311 is positioned above the gingival margin of the corresponding affected tooth 30. When the traction end 311 applies corrective force to the affected tooth 30 through the traction wire, the corrective force includes vertical upward (i.e., Figure 1 Apply an indentation force perpendicular to the paper and inwards to prevent tooth 30 from elongating during orthodontic treatment. Refer to... Figure 2 As shown, when the affected tooth 30 is located in the patient's mandible, the traction end 311 is located below the gingival margin of the corresponding affected tooth 30. When the traction end 311 applies corrective force to the affected tooth 30 through the traction wire to correct the locked jaw, the corrective force includes vertical downward (i.e., Figure 2 Apply an indentation force perpendicular to the paper and inwards to prevent the affected tooth 30 from elongating during orthodontic treatment.
[0033] According to the embodiment of the present invention, the traction end 311 of the traction hook 31 is connected to the connecting buckle bonded to the affected tooth 30 through the traction line. The traction end 311 can apply a corrective force to the affected tooth 30 through the traction line to correct the locked jaw, so as to achieve the correction of the locked jaw of the affected tooth 30. Since the traction end 311 is located on the side of the gingival margin of the corresponding affected tooth 30 away from the occlusal surface, the corrective force includes the gingival indentation force, which can effectively prevent the affected tooth 30 from elongating during the correction process.
[0034] In some embodiments of this utility model, the height difference between the traction end 311 and the gingival margin in the vertical direction is 4mm to 8mm. For example, the height difference between the traction end 311 and the gingival margin can be 4mm, 6mm, or 8mm. This effectively reduces the risk of the traction end 311 being damaged by biting and avoids occlusal interference between the traction end 311 and the opposing tooth. It also helps improve patient comfort. In addition, it can effectively prevent the elongation of the affected tooth 30 and effectively correct the tilt of the affected tooth 30. The vertical direction can be... Figure 1 and Figure 2 The direction perpendicular to the paper.
[0035] Understandably, when the height difference between the traction end 311 and the gingival margin is less than 4mm, the distance between the traction end 311 and the occlusal surface is small. When tooth 30 bites, the opposing tooth has a higher risk of biting the traction end 311, and the angle between the traction line and the vertical direction is larger, resulting in a smaller vertical component of the orthodontic force. This means a smaller indentation force is applied to tooth 30, and the effect of preventing tooth 30 from elongating is not significant. Conversely, when the height difference between the traction end 311 and the gingival margin is greater than 8mm, the distance between the traction end 311 and the occlusal surface is larger, the angle between the traction line and the vertical direction is smaller, and the horizontal component of the orthodontic force is greater. The force applied to the affected tooth 30 is small, resulting in a less significant effect on correcting its tilt. Furthermore, when the affected tooth 30 is located in the maxilla, if the traction end 311 is on the lingual side of the tooth, the distance between the traction end 311 and the soft palate mucosa is small, leading to a stronger foreign body sensation and making the patient prone to nausea. If the traction end 311 is on the buccal side of the tooth, it is likely to compress the maxillary vestibule mucosa. When the affected tooth 30 is located in the mandible, if the traction end 311 is on the lingual side of the tooth, it is likely to compress the lingual sublingual mucosa. If the traction end 311 is on the buccal side of the tooth, it is likely to compress the mandibular vestibule mucosa, resulting in lower patient comfort.
[0036] In this embodiment, the height difference between the traction end 311 and the gingival margin is in the range of 4mm to 8mm. The distance between the traction end 311 and the occlusal surface is moderate, which can effectively reduce the risk of the traction end 311 being bitten and avoid the occlusal interference between the traction end 311 and the opposing tooth. In addition, the angle between the traction line and the vertical direction is moderate, and the components of the orthodontic force in the vertical and horizontal directions are moderate. That is, the indentation force and traction force applied to the affected tooth 30 are moderate, which can effectively prevent the elongation of the affected tooth 30 and effectively correct the tilt of the affected tooth 30.
[0037] It should be noted that when tooth 30 is located in the patient's maxilla, the traction end 311 is positioned above the gingival margin, with a distance of 4mm to 8mm between the traction end 311 and the gingival margin. This effectively reduces the risk of the traction end 311 being bitten and damaged. Furthermore, when the traction end 311 is located on the lingual side of tooth 30, the distance between the traction end 311 and the soft palate mucosa is moderate, reducing the foreign body sensation. When the traction end 311 is located on the buccal side of tooth 30, it avoids compression of the maxillary vestibule mucosa, reducing irritation to the maxillary vestibule mucosa and preventing ulceration, thus improving patient comfort. When tooth 30 is located in the patient's mandible, the traction end 311 is positioned below the gingival margin and 4mm to 8mm away from it. This effectively reduces the risk of the traction end 311 being bitten. When the traction end 311 is located on the lingual side of tooth 30, it avoids compressing the lingual mucosa, reducing irritation and preventing ulceration. When the traction end 311 is located on the buccal side of tooth 30, it avoids compressing the mandibular vestibule mucosa, reducing irritation and preventing ulceration, thus improving patient comfort.
[0038] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 As shown, when the traction end 311 is located on the lingual side of the affected tooth 30, the distance L1 between the traction end 311 and the lingual side of the affected tooth 30 is 1mm to 3mm. For example, the distance L1 between the traction end 311 and the lingual side of the affected tooth 30 can be 1mm, 2mm, or 3mm, which can effectively reduce the risk of the patient's tongue and gums coming into contact with the traction end 311. The lingual side of the affected tooth 30 is the side of the affected tooth 30 that is closer to the tongue.
[0039] Understandably, when the distance L1 between the traction end 311 and the lingual surface of the affected tooth 30 is less than 1 mm, the distance L1 between the traction end 311 and the lingual surface of the affected tooth 30 is small, and the risk of the traction end 311 contacting the gingiva is relatively high. When the distance L1 between the traction end 311 and the lingual surface of the affected tooth 30 is greater than 3 mm, the distance L1 between the traction end 311 and the lingual surface of the affected tooth 30 is large, and the risk of the traction end 311 contacting the tongue is relatively high. In this embodiment, the distance L1 between the traction end 311 and the lingual surface of the affected tooth 30 is in the range of 1 mm to 3 mm. The distance L1 between the traction end 311 and the lingual surface of the affected tooth 30 is moderate, which can effectively reduce the risk of the traction end 311 contacting the gingiva corresponding to the affected tooth 30, as well as the risk of the traction end 311 contacting the tongue. This prevents the traction end 311 from deforming and compressing the gingiva and tongue during the application of orthodontic force, reduces stimulation to the gingiva and tongue, avoids ulceration, and helps improve patient comfort.
[0040] Reference Figure 1 and Figure 2 As shown, when the traction end 311 is located on the buccal side of the affected tooth 30, the distance L2 between the traction end 311 and the buccal side of the affected tooth 30 is 1mm to 3mm. For example, the distance L2 between the traction end 311 and the buccal side of the affected tooth 30 can be 1mm, 2mm, or 3mm, which can effectively reduce the risk of the patient's cheek and gum coming into contact with the traction end 311. The buccal side of the affected tooth 30 is the side of the affected tooth 30 that is close to the cheek.
[0041] Understandably, when the distance L2 between the traction end 311 and the buccal surface of the affected tooth 30 is less than 1 mm, the distance L2 between the traction end 311 and the buccal surface of the affected tooth 30 is small, and the risk of the traction end 311 contacting the gingiva is high. When the distance L2 between the traction end 311 and the buccal surface of the affected tooth 30 is greater than 3 mm, the distance L2 between the traction end 311 and the buccal surface of the affected tooth 30 is large, the distance between the traction end 311 and the cheek is small, and the risk of the traction end 311 contacting the cheek is high. In this embodiment, the traction end 311... The distance L2 between the traction end 311 and the buccal side of the affected tooth 30 is within the range of 1mm to 3mm. The distance L2 between the traction end 311 and the buccal side of the affected tooth 30 is moderate, and the distance between the traction end 311 and the cheek is moderate. This can effectively reduce the risk of the traction end 311 contacting the gum corresponding to the affected tooth 30, as well as the risk of the traction end 311 contacting the cheek. It can also prevent the traction end 311 from deforming and compressing the gum and cheek during the application of orthodontic force, reduce stimulation to the gum and cheek, avoid causing ulcers, and improve patient comfort.
[0042] In some embodiments of this utility model, the traction wire is a chain-like elastic band with multiple connecting holes. The traction end 311 can be hooked into the connecting hole to connect to the traction wire. This connection operation is simple and convenient, saving the doctor's time. Furthermore, during the treatment of the affected tooth 30, when it is necessary to adjust the orthodontic force, the length of the traction wire can be adjusted by changing the connecting hole connected to the traction end 311, thereby achieving adjustment of the orthodontic force. (Refer to...) Figure 1 and Figure 2 As shown, the traction end 311 is constructed as a "C"-shaped hook, which allows the traction end 311 to hook onto the connection hole of the traction line. When the traction line needs to be replaced, the traction end 311 can be removed from the connection hole, thus separating the traction end 311 from the traction line. The operation is simple and convenient, and it is easy to disassemble and replace the traction line.
[0043] In some embodiments of this utility model, the fixing member 1 is constructed with a ring. The fixing member 1 is bonded to the crown of the anchorage tooth 20 and avoids the occlusal point of the anchorage tooth 20, so as to facilitate the normal occlusion of the anchorage tooth 20 and ensure that the fixing member 1 will not interfere with the normal chewing function when the anchorage tooth 20 is occluding. The fixing member 1 is fixed to the anchorage tooth 20 by bonding, which can avoid trauma to the anchorage tooth 20 and improve the patient's comfort.
[0044] Reference Figure 1 and Figure 2 As shown, the fixation member 1 is bonded to the buccal side, lingual side, mesial marginal ridge and distal marginal ridge of the crown of the anchorage tooth 20. The fixation member 1 is constructed with a ring to increase its connection area with the anchorage tooth 20, which helps to improve the connection strength between the fixation member 1 and the anchorage tooth 20 and can effectively reduce the risk of the orthodontic appliance 10 falling off.
[0045] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 As shown, connector 2 includes a left connecting rod 21, a right connecting rod 22, and a support rod 23. The left connecting rod 21 is connected to the fixing member 1 on the left side of the center line M, and the right connecting rod 22 is connected to the fixing member 1 on the right side of the center line M. The support rod 23 is connected between the left connecting rod 21 and the right connecting rod 22. The support rod 23 is used to support the left connecting rod 21 and the right connecting rod 22. The left connecting rod 21 and the right connecting rod 22 can transmit force to each other through the support rod 23 to achieve uniform force distribution. This can prevent one of the left connecting rod 21 and the right connecting rod 22 from being subjected to greater force and deforming, which is beneficial to improving the structural stability of connector 2. The center line M is an imaginary line that divides the craniofacial region into two equal parts.
[0046] In some embodiments of this utility model, in the vertical direction, the connector 2 is located on the side of the gingival margin of the affected tooth 30 away from the occlusal surface, and the height difference between the connector 2 and the gingival margin is 3mm, so as to facilitate oral hygiene cleaning. For example, when the orthodontic appliance 10 is used to treat the maxillary affected tooth 30, the connector 2 can fit with the lingual soft tissue of the maxilla, and the connector 2 is located above the gingival margin of the affected tooth 30 and the height difference between the connector 2 and the gingival margin is 3mm, so as to facilitate cleaning of the gingival margin. When the orthodontic appliance 10 is used to treat the mandibular affected tooth 30, the connector 2 can fit with the lingual soft tissue of the mandible, and the connector 2 is located below the gingival margin of the affected tooth 30 and the height difference between the connector 2 and the gingival margin is 3mm, so as to facilitate cleaning of the gingival margin.
[0047] In some embodiments of this utility model, the thickness of the connector 2, the traction hook 31 and the fixing member 1 can be 0.5mm to ensure the structural strength of the connector 2, the traction hook 31 and the fixing member 1. It should be noted that the thickness of the connector 2, the traction hook 31 and the fixing member 1 is not limited to that described in this embodiment. The thickness can be adjusted according to the patient's occlusal space.
[0048] In some embodiments of this utility model, multiple fixing components 1, connecting components 2, and traction hooks 31 are integrally cast, which helps to save the manufacturing time of the orthodontic appliance for the affected tooth 30. Specifically, the multiple fixing components 1, connecting components 2, and traction hooks 31 are integrally cast within a mold.
[0049] Understandably, during the fabrication of the orthodontic appliance for the affected tooth 30, the multiple fasteners 1, connectors 2, and traction hooks 31 do not need to be connected by fasteners or welding, which can save the assembly time of the multiple fasteners 1, connectors 2, and traction hooks 31, thus helping to save the fabrication time of the orthodontic appliance for the affected tooth 30.
[0050] In some embodiments of this utility model, the materials of multiple fixing parts 1, connecting parts 2, and traction hooks 31 are cobalt-chromium alloys. Cobalt-chromium alloys have good biocompatibility and low irritation to human tissues. When using the orthodontic appliance 10 to treat the affected tooth 30, the risk of allergies and rejection reactions can be reduced, which is beneficial to improving patient comfort. The orthodontic appliance 10 can be implanted in the patient's oral cavity for a long time. In addition, the high strength of the cobalt-chromium alloy can improve the structural stability of the fixing parts 1, connecting parts 2, and traction hooks 31. Furthermore, the cobalt-chromium alloy has good corrosion resistance, which can reduce the risk of the fixing parts 1, connecting parts 2, and traction hooks 31 being corroded by saliva in the oral cavity, which is beneficial to extending the service life of the orthodontic appliance 10.
[0051] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2As shown, anchorage tooth 20 and affected tooth 30 are located on the same jaw side. Anchorage tooth 20 is a molar and is located in front of affected tooth 30. Molar has good stability and can provide reliable support for orthodontic appliance 10 as anchorage tooth 20.
[0052] Understandably, the anchorage tooth 20 and the affected tooth 30 are located on the same side of the jaw, and multiple fasteners 1, connectors 2 and traction components 3 are all arranged on the same side of the jaw to facilitate the placement of the orthodontic appliance 10 and to avoid interference between the orthodontic appliance 10 and the teeth on the opposite side of the affected tooth 30, which is conducive to ensuring the patient's normal chewing function.
[0053] In other embodiments of this invention, not shown in the figures, the anchorage tooth 20 is a molar and may be located behind the affected tooth 30.
[0054] In some embodiments of this utility model, reference is made to Figure 1 and Figure 2 As shown, there are multiple traction components, with two traction components corresponding to each affected tooth 30. Of the two traction components corresponding to the affected tooth 30, the traction end 311 of one traction component is located on the lingual side of the affected tooth 30, and the traction end 311 of the other traction component is located on the buccal side of the affected tooth 30. The two traction ends 311 located on the buccal and lingual sides of the affected tooth 30 can simultaneously apply orthodontic force to the affected tooth 30, increasing the indentation force on the affected tooth 30 and facilitating faster repositioning of the affected tooth 30 into the alveolar bone, thereby improving the orthodontic speed. Furthermore, when the locked occlusion results in the elongation of the affected tooth 30, applying equal orthodontic forces on both sides of the affected tooth 30 can prevent the affected tooth 30 from tilting towards the buccal and lingual sides.
[0055] Among them, reference Figure 1 and Figure 2 As shown, the connecting end 312 of the traction assembly, where the traction end 311 is located on the lingual side of the affected tooth 30, is connected to the connector 2, and the connecting end 312 of the traction assembly, where the traction end 311 is located on the buccal side of the affected tooth 30, is connected to the fixation member 1.
[0056] In some embodiments of this utility model, the connecting buckle can be bonded to the crown center of the lingual or buccal side of the affected tooth 30, and the extension line of the concave midpoint of the traction end 311 passes through the crown center of the affected tooth 30, which is conducive to the traction hook 31 applying a more balanced orthodontic force to the affected tooth 30 through the traction line, so that the affected tooth 30 can be repositioned under the action of the orthodontic force.
[0057] According to the embodiment of the present invention, the orthodontic appliance 10 corrects locked jaws through a biomechanical mechanism by applying vertical pressure through the traction hook 31 to the center of resistance passing through the affected tooth 30. This corrects the buccal or lingual tilt of the affected tooth 30 while simultaneously repositioning it into the alveolar bone, preventing the affected tooth 30 from elongating and damaging the lower third of the patient's facial height. The orthodontic appliance 10 has traction hooks 31 on both the buccal and lingual sides of the affected tooth 30, allowing for flexible adjustment of the direction and magnitude of the force applied on the buccal and lingual sides as treatment progresses. This enables precise four-dimensional control of the teeth, resulting in fast treatment speed and strong practicality. The orthodontic appliance 10 can flexibly adjust the number and position of the anchorage teeth 20, providing stronger anchorage reserve and a wider range of clinical applications. The orthodontic appliance 10 is fixed to the anchorage teeth 20 by bonding. Using the orthodontic appliance 10 of this embodiment to correct locked jaws is a non-invasive treatment that does not rely on patient cooperation, resulting in high patient acceptance in clinical practice.
[0058] According to the embodiment of this utility model, the orthodontic appliance 10 can be well applied in the scenario of correcting a locked jaw. The orthodontic appliance 10 can provide controllable and stable horizontal traction force and vertical indentation force for the affected tooth 30. Moreover, the orthodontic appliance 10 is precisely manufactured, has a long service life, and has a low manufacturing cost, and has a wide range of application prospects.
[0059] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A dental appliance, characterized in that, include: Multiple fasteners (1), the multiple fasteners (1) are adapted to be fixed to multiple anchorage teeth (20) in a one-to-one correspondence, and the multiple anchorage teeth (20) include at least one pair of teeth with the same name; A connector (2) is located on the tongue side of each of the fixing members (1) and is connected to each of the fixing members (1); The traction assembly includes: a traction hook (31), a connecting buckle, and a traction line. The traction hook (31) has a traction end (311) and a connecting end (312). The traction end (311) is located on the lingual side of the affected tooth (30), and the connecting end (312) is connected to the connector (2). Alternatively, the traction end (311) is located on the buccal side of the affected tooth (30), and the connecting end (312) is connected to the fixation member (1). The connecting buckle is bonded to the side of the affected tooth (30) facing or away from the traction end (311). The traction end (311) is connected to the connecting buckle through the traction line to apply a corrective force to the affected tooth (30) to correct the occlusal lock. In the vertical direction, the traction end (311) is located on the side of the gingival margin of the corresponding affected tooth (30) away from the occlusal surface.
2. The orthodontic appliance according to claim 1, characterized in that, In the vertical direction, the height difference between the traction end (311) and the gingival margin is 4 mm to 8 mm.
3. The orthodontic appliance according to claim 2, characterized in that, When the traction end (311) is located on the lingual side of the affected tooth (30), the distance between the traction end (311) and the lingual side of the affected tooth (30) is 1 mm to 3 mm. When the traction end (311) is located on the buccal side of the affected tooth (30), the distance between the traction end (311) and the buccal side of the affected tooth (30) is 1 mm to 3 mm.
4. The orthodontic appliance according to claim 1, characterized in that, The traction line is a chain-like elastic band.
5. The orthodontic appliance according to claim 1, characterized in that, The fixing member (1) is constructed with a ring and is bonded to the crown of the anchorage tooth (20) while avoiding the occlusal point of the anchorage tooth (20).
6. The orthodontic appliance according to claim 1, characterized in that, The connector (2) includes: Left connecting rod (21), which is connected to the fixing member (1) on the left side of the center line; The right connecting rod (22) is connected to the fixing member (1) on the right side of the center line; A support rod (23) is connected between the left connecting rod (21) and the right connecting rod (22).
7. The orthodontic appliance according to claim 1, characterized in that, The multiple fasteners (1), the connectors (2), and the traction hooks (31) are integrally cast.
8. The orthodontic appliance according to claim 7, characterized in that, The materials of the multiple fasteners (1), the connectors (2) and the traction hooks (31) are cobalt-chromium alloys.
9. The orthodontic appliance according to claim 1, characterized in that, The anchorage tooth (20) and the affected tooth (30) are located on the same jaw side, and the anchorage tooth (20) is a molar and is located in front of the affected tooth (30).
10. The orthodontic appliance according to any one of claims 1-9, characterized in that, The number of traction components is multiple, with two traction components corresponding to each affected tooth (30). In the two traction components corresponding to the affected tooth (30), the traction end (311) of one traction component is located on the lingual side of the affected tooth (30), and the traction end (311) of the other traction component is located on the buccal side of the affected tooth (30).