Tooth correction device

Abstract

The utility model discloses a tooth correction device, which comprises: a shell-shaped appliance forming a cavity for accommodating teeth, a notch formed in the side wall of the lip-cheek side and / or the tongue side of the shell-shaped appliance, the notch penetrating through the inner and outer surfaces of the side wall; and the force application piece is connected to the shell-shaped appliance, at least part of the force application piece convexly extends into the cavity from the notch, and correction force is applied to target teeth. Compared with the prior art, the tooth correction device has the advantages that when the tooth correction device is worn on the dentition, the part, protruding into the cavity from the notch, of the force application piece can directly act on the target tooth, and correction force is applied to the target tooth, so that on the basis of correcting the whole dentition by the shell-shaped appliance, the correction force can be applied to the target tooth, and the tooth correction effect is improved. According to the technical scheme, one or more target teeth can be subjected to force application correction according to needs, so that the target teeth can be corrected in a targeted manner, a better correction effect is achieved, and the correction period is shortened.

Description

Technical Field

[0001] This application relates to the field of orthodontic technology, and more particularly to an orthodontic device. Background Technology

[0002] In recent years, invisible aligners have been chosen by more and more people due to their advantages of being comfortable to wear, removable, easy to clean, and visually appealing. Invisible aligner technology achieves orthodontic purposes by interacting with the teeth and applying force to them.

[0003] However, the contact surface between the teeth and the clear aligner is usually a smooth curved surface, and patients' teeth often have various irregularities, so it is difficult to achieve tooth correction by relying solely on the clear aligner itself. Utility Model Content

[0004] The purpose of this application is to provide a dental orthodontic device.

[0005] To achieve the aforementioned objectives, one embodiment provides a dental orthodontic device, comprising:

[0006] A shell-shaped orthodontic appliance forms a cavity to accommodate teeth. The shell-shaped orthodontic appliance has grooves formed on the labial and / or lingual sidewalls, which penetrate the inner and outer surfaces of the sidewalls.

[0007] The force-applying element is connected to the shell-shaped orthodontic appliance and at least partially protrudes from the slot into the cavity, applying orthodontic force to the target tooth.

[0008] In one embodiment of this application, the slot is located at the gingival end of the shell-shaped orthodontic appliance.

[0009] In one embodiment of this application, the shell-shaped orthodontic appliance has an opening, and the slot is connected to the opening.

[0010] In one embodiment of this application, the force-applying member includes a connecting portion, which is connected to the shell-shaped orthodontic appliance, and the connecting portion is located on the side of the slot facing the base of the shell-shaped orthodontic appliance.

[0011] In one embodiment of this application, the slot is located at one end of the sidewall near the base of the shell-shaped orthodontic appliance.

[0012] In one embodiment of this application, the force-applying member includes a connecting portion, which is connected to the shell-shaped orthodontic appliance, and the connecting portion is located on the side of the slot away from the base of the shell-shaped orthodontic appliance.

[0013] In one embodiment of this application, the force-applying element is an elastic element, which applies orthodontic force to the target tooth under the action of its own elastic restoring force.

[0014] In one embodiment of this application, the force-applying component includes a force-applying body and a connecting part, the connecting part being connected to the shell-shaped orthodontic appliance, and the force-applying body being one or a combination of at least two of the following: elastic band, spring, steel wire, and shape memory alloy wire.

[0015] In one embodiment of this application, the force-applying member includes a connecting portion, which is connected to the outer surface of the sidewall.

[0016] In one embodiment of this application, the force-applying component includes a force-applying body and two connecting portions, with both ends of the force-applying body connected to the two connecting portions respectively, and the force-applying body at least partially protruding from the slot into the cavity.

[0017] In one embodiment of this application, the groove is formed on the sidewall of the lip and cheek side, and both of the connecting portions are connected to the lip and cheek surface of the shell-shaped orthodontic appliance;

[0018] Alternatively, the groove is formed on the sidewall of the tongue, and both of the connecting portions are connected to the tongue surface of the shell-shaped orthodontic appliance.

[0019] In one embodiment of this application, the connecting part is integrally formed with the shell-shaped orthodontic appliance; or, it is separately formed from the shell-shaped orthodontic appliance and is bonded, welded, riveted or snapped to the outer surface of the sidewall.

[0020] In one embodiment of this application, the cavity includes a plurality of tooth-receiving cavities that are interconnected, and the slot spans at least one of the tooth-receiving cavities.

[0021] In one embodiment of this application, when the orthodontic appliance is worn on the dentition, at least a portion of the sidewall of the shell-shaped appliance corresponding to the slot has a gap with the tooth.

[0022] Compared with the prior art, the beneficial effects of this application include: by forming a slot through the inner and outer surfaces of the sidewalls on the labial and buccal and / or lingual sides of the shell-shaped orthodontic appliance, and providing a force-applying element, with at least a portion of the force-applying element protruding from the slot into the cavity, when the orthodontic appliance is worn on the dentition, the portion of the force-applying element protruding from the slot into the cavity can directly act on the target tooth and apply orthodontic force to the target tooth. In this way, based on the overall orthodontic treatment of the dentition by the shell-shaped orthodontic appliance, force can be applied to one or several target teeth as needed, thereby enabling targeted treatment of the target teeth, achieving better orthodontic results, and shortening the treatment cycle. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a dental orthodontic device according to an embodiment of this application when it is worn on the dentition, showing the state in which the slot is located at the gingival end of the shell-shaped orthodontic appliance;

[0024] Figure 2 yes Figure 1 A cross-sectional schematic diagram;

[0025] Figure 3 This is a three-dimensional structural diagram of a dental orthodontic device according to another embodiment of this application when worn on the dentition, showing that the slot is located at one end of the side wall near the base of the shell-shaped orthodontic appliance;

[0026] Figure 4 yes Figure 3 A cross-sectional schematic diagram. Detailed Implementation

[0027] The embodiments of this application will be described in detail below with reference to the specific examples shown in the accompanying drawings. However, these embodiments do not limit this application, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of this application.

[0028] See Figures 1 to 4 One embodiment of this application provides a dental orthodontic device 100 for orthodontic treatment of a target tooth 200.

[0029] See Figures 1 to 4 The orthodontic device 100 includes a shell-shaped appliance 1 and a force-applying component 2.

[0030] The shell-shaped orthodontic appliance 1 can specifically be a transparent component formed from polymer material through a hot-press molding process, also known as an invisible orthodontic appliance. It forms a cavity to accommodate teeth, wherein the cavity includes multiple tooth-accommodating chambers that are interconnected and collectively form the cavity. The cavity has a geometry that repositions the patient's teeth from a first layout to a second layout. The geometry of the cavity is determined based on the second layout of the patient's teeth and substantially matches the second layout of the patient's teeth.

[0031] When the shell-shaped orthodontic appliance 1 is worn on the dentition, the shell-shaped orthodontic appliance 1 covers the outside of the dentition and the dentition can be seen through the shell-shaped orthodontic appliance 1, and the teeth in the dentition are respectively housed in their respective tooth-accepting cavities.

[0032] The shell-shaped orthodontic appliance 1 is divided into an anterior region and two lateral posterior regions. The anterior region of the shell-shaped orthodontic appliance 1 corresponds to the anterior teeth region in the dentition; the posterior regions of the shell-shaped orthodontic appliance 1 correspond to the posterior teeth region in the dentition. Understandably, the two lateral posterior regions of the shell-shaped orthodontic appliance 1 are divided into the left posterior region and the right posterior region. Of course, the shell-shaped orthodontic appliance 1 may also have only an anterior region without a posterior region, or only a posterior region without an anterior region, depending on the orthodontic needs.

[0033] Here, the terms "anterior region" and "posterior region" are defined according to the classification of teeth in the 2nd edition of "Introduction to Stomatology" published by Peking University Medical Press, pages 36-38. The anterior region includes incisors, lateral incisors, and canines, which are marked as 1-3 in the FDI notation. The posterior region includes the first premolar, second premolar, first molar, second molar, and third molar, which are marked as 4-8 in the FDI notation.

[0034] See Figures 1 to 4 In this application, a groove 12 is formed on the sidewall 11 of the shell-shaped orthodontic appliance 1 on the labial and / or lingual sides, and the groove 12 penetrates the inner and outer surfaces of the sidewall 11.

[0035] The force-applying element 2 is connected to the shell-shaped appliance 1 and at least partially protrudes from the slot 12 into the cavity, applying orthodontic force to the target tooth 200.

[0036] Thus, by forming a slot 12 penetrating the inner and outer surfaces of the sidewall 11 on the labial and / or lingual sides of the shell-shaped orthodontic appliance 1, and providing a force-applying element 2, with at least a portion of the force-applying element 2 protruding into the cavity from the slot 12, when the orthodontic appliance 100 is worn on the dentition, the portion of the force-applying element 2 protruding into the cavity from the slot 12 can directly act on the target tooth 200 and apply orthodontic force to the target tooth 200. In this way, based on the overall orthodontic treatment of the dentition by the shell-shaped orthodontic appliance 1, force can be applied to one or several target teeth 200 as needed, thereby enabling targeted treatment of the target teeth 200, achieving better orthodontic results, and shortening the treatment cycle.

[0037] See Figure 1 and Figure 3 The notch 12 spans at least one tooth cavity. The notch 12 is positioned at the location of the target tooth 200, or at the location of the target tooth 200 and its adjacent teeth. This allows for the positioning of the target tooth 200, and the force-applying element 2 can directly contact the target tooth 200 at the notch 12, thereby applying orthodontic force to the target tooth 200.

[0038] Specifically, in one embodiment, a groove 12 is formed on the labial and buccal sidewall 11 of the shell-shaped orthodontic appliance 1. The groove 12 penetrates the inner and outer surfaces of the labial and buccal sidewall 11, so that the force-applying element 2 can apply a force toward the lingual side to the target tooth 200.

[0039] In another embodiment, a groove 12 is formed on the lingual sidewall 11 of the shell-shaped orthodontic appliance 1, the groove 12 penetrating the inner and outer surfaces of the lingual sidewall 11, so that the force-applying element 2 can apply a force toward the labial and buccal side to the target tooth 200.

[0040] In another embodiment, the shell-shaped orthodontic appliance 1 has grooves 12 formed on both the labial / buccal sidewall 11 and the lingual sidewall 11. The grooves 12 on the labial / buccal sidewall 11 penetrate the inner and outer surfaces of the labial / buccal sidewall 11, and the grooves 12 on the lingual sidewall 11 penetrate the inner and outer surfaces of the lingual sidewall 11. Thus, the force-applying member 2 corresponding to the groove 12 on the lingual sidewall 11 applies a force toward the lingual side to the target tooth 200 located at the groove 12, while the force-applying member 2 corresponding to the groove 12 on the labial / buccal sidewall 11 applies a force toward the labial / buccal side to the target tooth 200 located at the groove 12, thereby providing targeted orthodontic treatment for the target teeth 200 at different locations.

[0041] Of course, the force-applying component 2 and the slot 12 are set one-to-one, and the number of them depends on the target tooth 200; there can be one, two, or even more. If multiple target teeth 200 require targeted treatment, the slot 12 and its corresponding force-applying component 2 can be set according to the position of the target teeth 200. Of course, whether the slot 12 is set on the labial / buccal or lingual sidewall 11 of the shell-shaped appliance 1 depends on the target treatment position of the target tooth 200.

[0042] See Figure 1 and Figure 3 The force-applying component 2 includes a connecting part 21, which is connected to the shell-shaped orthodontic appliance 1.

[0043] The force-applying component 2 also includes a force-applying body 22, which is connected to the connecting part 21. At least a portion of the force-applying body 22 protrudes from the slot 12 into the cavity and applies orthodontic force to the target tooth 200.

[0044] See Figures 1 to 2 In one embodiment, the slot 12 is located at the gingival end 13 of the shell-shaped orthodontic appliance 1. Thus, if the force-applying member 2 is located on the labial / buccal sidewall 11 of the shell-shaped orthodontic appliance 1, the force-applying member 2 applies a force toward the lingual side to the target tooth 200, causing the target tooth 200 to translate toward the lingual side; if the force-applying member 2 is located on the lingual sidewall 11 of the shell-shaped orthodontic appliance 1, the force-applying member 2 applies a force toward the labial / buccal side to the target tooth 200, causing the target tooth 200 to translate toward the labial / buccal side.

[0045] In this context, the gingival end 13 of the shell-shaped orthodontic appliance 1 refers to the end of the shell-shaped orthodontic appliance 1 facing the gum when it is worn on the dentition.

[0046] The shell-shaped orthodontic appliance 1 has an opening 14, through which teeth enter the cavity when the appliance 1 is worn on the dentition. The shell-shaped orthodontic appliance 1 also has a base 15, which is positioned opposite the opening 14. The base 15 and sidewalls 11 together enclose the cavity; that is, the base 15, the labial / buccal sidewalls 11, and the lingual sidewalls 11 together enclose the cavity. When the shell-shaped orthodontic appliance 1 is worn on the dentition, the inner surface of the base 15 contacts the tangential surface of the teeth.

[0047] Combination Figure 1 and Figure 2 In one specific embodiment, the slot 12 is connected to the opening 14. That is, the slot 12 extends from the opening 14 towards the base 15 along the occlusal direction. This not only facilitates processing but also allows for easy positioning, with the slot 12 positioned at the gingival end 13 of the shell-shaped orthodontic appliance 1, so that the force-applying element 2 acts on the crown of the target tooth 200 near the gingiva, thereby causing the target tooth 200 to translate.

[0048] In this embodiment, the connecting part 21 is located on the side of the slot 12 facing the base 15 of the shell-shaped orthodontic appliance 1. This facilitates the connection of the connecting part 21 to the shell-shaped orthodontic appliance 1 and reduces damage to the strength of the shell-shaped orthodontic appliance 1.

[0049] See Figure 3 and Figure 4 In another embodiment, the slot 12 is located at one end of the sidewall 11 near the base 15 of the shell-shaped appliance 1. Thus, if the force-applying member 2 is located on the labial / buccal sidewall 11 of the shell-shaped appliance 1, the force-applying member 2 applies a force toward the lingual side to the target tooth 200, causing the target tooth 200 to rotate toward the lingual side; if the force-applying member 2 is located on the lingual sidewall 11 of the shell-shaped appliance 1, the force-applying member 2 applies a force toward the labial / buccal side to the target tooth 200, causing the target tooth 200 to rotate toward the labial / buccal side.

[0050] In this embodiment, the connecting part 21 is located on the side of the slot 12 away from the base 15 of the shell-shaped orthodontic appliance 1. This facilitates the connection of the connecting part 21 to the shell-shaped orthodontic appliance 1 and reduces damage to the strength of the shell-shaped orthodontic appliance 1.

[0051] The force-applying element 2 is preferably an elastic element. Under the action of its own elastic repositioning force, the elastic element applies orthodontic force to the target tooth 200, thereby ensuring the orthodontic effect.

[0052] The force-applying body 22 can be one or a combination of at least two of the following: rubber band, spring, steel wire, and shape memory alloy wire. The specific selection and setting can be based on the actual application.

[0053] When the force-applying body 22 is made of steel wire or shape memory alloy wire, the steel wire or shape memory alloy wire can be bent into shape as a whole.

[0054] See Figure 1 and Figure 3 In a preferred embodiment, the connecting part 21 is connected to the outer surface of the side wall 11. This not only facilitates the connection of the connecting part 21 to the shell-shaped orthodontic appliance 1, but also avoids the connecting part 21 occupying the space of the inner cavity of the shell-shaped orthodontic appliance 1 and affecting the orthodontic effect of the shell-shaped orthodontic appliance 1.

[0055] Preferably, the force-applying component 2 includes two connecting parts 21, and the two ends of the force-applying body 22 are respectively connected to the two connecting parts 21. The force-applying body 22 at least partially protrudes from the slot 12 into the cavity. In this way, the fixing effect of the force-applying body 22 can be improved, so that the force-applying component 2 applies orthodontic force to the target tooth 200, thereby improving its orthodontic effect.

[0056] For example, when the force-applying body 22 is a rubber band or spring, the two ends of the rubber band or spring are fixed by two connecting parts 21 respectively, and at least a portion of the rubber band or spring protrudes into the cavity from the slot 12. In this way, when the shell-shaped orthodontic appliance 1 is worn on the dentition, the rubber band or spring contacts the target tooth 200, and under the interference of the target tooth 200, the rubber band or spring deforms and applies force to the target tooth 200 under the action of its own elastic restoring force. The same applies when the force-applying body 22 is made of steel wire or shape memory alloy wire.

[0057] When the notch 12 is formed on the labial / buccal sidewall 11, both connecting parts 21 are connected to the labial / buccal surface 16 of the shell-shaped orthodontic appliance 1; when the notch 12 is formed on the lingual sidewall 11, both connecting parts 21 are connected to the lingual surface 17 of the shell-shaped orthodontic appliance 1. This facilitates the application of force and orthodontic effect of the force-applying element 2 on the target tooth 200.

[0058] The buccal surface 16 of the shell-shaped orthodontic appliance 1 refers to the outer surface of the sidewall 11 of the shell-shaped orthodontic appliance 1 facing the buccal side, and the lingual surface 17 of the shell-shaped orthodontic appliance 1 refers to the outer surface of the sidewall 11 of the shell-shaped orthodontic appliance 1 facing the lingual side.

[0059] The two connecting parts 21 can be arranged symmetrically or asymmetrically relative to the target tooth 200.

[0060] The connecting part 21 can be integrally formed with the shell-shaped orthodontic appliance 1; or it can be separately formed from the shell-shaped orthodontic appliance 1, and the connecting part 21 can be fixed to the outer surface of the side wall 11 by bonding, welding, riveting or snap fastening.

[0061] The connecting part 21 has various specific structures. For example, in one optional embodiment, the connecting part 21 is a tubular structure with a mounting hole, and the force-applying member 2 is inserted into the mounting hole; in another optional embodiment, the connecting part 21 is a groove-shaped structure with a slot, and the force-applying member 2 is engaged in the slot; in yet another optional embodiment, the connecting part 21 is a protrusion with a locking post, and the force-applying member 2 is hooked onto the locking post.

[0062] Furthermore, in some embodiments, the connecting part 21 may also be provided on the crown of a single tooth of the shell-shaped orthodontic appliance 1; while in other embodiments, the connecting part 21 may be provided on the interdental space of the shell-shaped orthodontic appliance 1, which is the space between two adjacent teeth.

[0063] See Figure 2 and Figure 4When the orthodontic appliance 100 is worn on the dentition, at least a portion of the sidewall 11 on the shell-shaped appliance 1, corresponding to the slot 12, has a gap with the tooth 200. This gap provides space for the movement of the tooth 200, facilitating the movement of the target tooth away from the force-applying element 2 under its influence, thereby achieving a better orthodontic effect.

[0064] Specifically, if the slot 12 is located on the labial / buccal sidewall 11 of the shell-shaped orthodontic appliance 1, then at least a portion of the area on the lingual sidewall 11 of the shell-shaped orthodontic appliance 1 corresponding to the slot 12 has a gap with the tooth 200; if the slot 12 is located on the lingual sidewall 11 of the shell-shaped orthodontic appliance 1, then at least a portion of the area on the labial / buccal sidewall 11 of the shell-shaped orthodontic appliance 1 corresponding to the slot 12 has a gap with the tooth 200.

[0065] Thus, this application has at least the following beneficial effects compared to related technologies: by forming a groove 12 penetrating the inner and outer surfaces of the sidewall 11 on the labial and / or lingual side of the shell-shaped orthodontic appliance 1, and providing a force-applying element 2, with at least a portion of the force-applying element 2 protruding from the groove 12 into the cavity, when the orthodontic appliance 100 is worn on the dentition, the portion of the force-applying element 2 protruding from the groove 12 into the cavity can directly act on the target tooth 200 and apply orthodontic force to the target tooth 200. In this way, based on the overall orthodontic treatment of the dentition by the shell-shaped orthodontic appliance 1, force can be applied to one or several target teeth 200 as needed, thereby allowing for targeted treatment of the target teeth 200, achieving better orthodontic results, and shortening the treatment cycle.

[0066] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0067] The detailed descriptions listed above are merely specific descriptions of feasible implementation methods of this application, and are not intended to limit the scope of protection of this application. All equivalent implementation methods or modifications made without departing from the spirit of the art of this application should be included within the scope of protection of this application.

Claims

1. A dental orthodontic appliance, characterized in that, include: A shell-shaped orthodontic appliance forms a cavity to accommodate teeth. The shell-shaped orthodontic appliance has grooves formed on the labial and / or lingual sidewalls, which penetrate the inner and outer surfaces of the sidewalls. The force-applying element is connected to the shell-shaped orthodontic appliance and at least partially protrudes from the slot into the cavity, applying orthodontic force to the target tooth.

2. The orthodontic device according to claim 1, characterized in that, The slot is located at the gingival end of the shell-shaped orthodontic appliance.

3. The orthodontic device according to claim 2, characterized in that, The shell-shaped orthodontic appliance has an opening, and the slot is connected to the opening.

4. The orthodontic device according to claim 2, characterized in that, The force-applying component includes a connecting part, which is connected to the shell-shaped orthodontic appliance. The connecting part is located on the side of the slot facing the base of the shell-shaped orthodontic appliance.

5. The orthodontic device according to claim 1, characterized in that, The slot is located at one end of the side wall near the base of the shell-shaped orthodontic appliance.

6. The orthodontic device according to claim 5, characterized in that, The force-applying component includes a connecting part, which is connected to the shell-shaped orthodontic appliance. The connecting part is located on the side of the slot away from the base of the shell-shaped orthodontic appliance.

7. The orthodontic device according to claim 1, characterized in that, The force-applying component is an elastic component, which applies orthodontic force to the target tooth under the action of its own elastic resetting force.

8. The orthodontic device according to claim 1, characterized in that, The force-applying component includes a force-applying body and a connecting part. The connecting part is connected to the shell-shaped orthodontic appliance. The force-applying body is one or a combination of at least two of the following: elastic band, spring, steel wire, and shape memory alloy wire.

9. The orthodontic device according to claim 1, characterized in that, The force-applying component includes a connecting portion, which is connected to the outer surface of the sidewall.

10. The orthodontic device according to claim 9, characterized in that, The force-applying component includes a force-applying body and two connecting parts. The two ends of the force-applying body are respectively connected to the two connecting parts. At least part of the force-applying body protrudes into the cavity from the slot.

11. The orthodontic device according to claim 10, characterized in that, The groove is formed on the sidewall of the lip and cheek side, and both of the connecting parts are connected to the lip and cheek surface of the shell-shaped orthodontic appliance; Alternatively, the groove is formed on the sidewall of the tongue, and both of the connecting portions are connected to the tongue surface of the shell-shaped orthodontic appliance.

12. The orthodontic device according to claim 9, characterized in that, The connecting part is integrally formed with the shell-shaped orthodontic appliance; or, it is separately formed from the shell-shaped orthodontic appliance and is bonded, welded, riveted or snapped to the outer surface of the side wall.

13. The orthodontic device according to claim 1, characterized in that, The cavity includes multiple tooth-receiving cavities that are interconnected, and the slot spans at least one of the tooth-receiving cavities.

14. The orthodontic device according to claim 1, characterized in that, When worn on the dentition, the shell-shaped orthodontic appliance has a gap between at least a portion of the sidewall opposite the slot and the tooth.

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