Orthodontic lingual removable retainer

Abstract

An orthodontic lingual removable retainer includes: a bow band, on which a plurality of accessory mounting grooves are arranged at intervals along the extending direction of the bow band; a tooth lingual bonding accessory provided on the bow band, the tooth lingual bonding accessory including a bonding body and a connecting portion provided on the back of the bonding body, the connecting portion being adapted to cooperate with the accessory mounting groove, being accommodated in the accessory mounting groove, and being movable in the vertical direction in the accessory mounting groove. The bow band and the tooth lingual bonding accessory of the present invention adopt a movable connection structure, after the patient wears it, the bow band can allow the tooth lingual bonding accessory and the bow band to move relative to each other in the vertical direction on the basis of maintaining the horizontal position of the teeth, so that the teeth can move slightly in the vertical direction, realizing the self-fine adjustment of the occlusal relationship, and the tooth lingual bonding accessory of the present invention is attached to the lingual side of the teeth, and is relatively small in size, meeting the patient's requirements for aesthetics and comfort.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to an orthodontic retainer used after teeth correction. Background Art

[0002] Orthodontic retainers are orthodontic tools worn after the completion of orthodontic treatment to maintain the existing tooth arrangement and occlusion relationship and prevent recurrence. Since the periodontal ligament fibers have not yet established a new balance after the completion of orthodontic treatment, the new occlusion also needs to be adjusted with the nerves and muscles to achieve the final stability. Therefore, every patient must wear a retainer after the completion of orthodontic treatment to prevent the recurrence of malocclusion and deformity. After orthodontic treatment, the horizontal arrangement of the upper and lower teeth is basically normal, but the vertical arrangement (occlusion relationship) still needs to be further fine-tuned according to the patient's own occlusion, including tooth adjustment and grinding by the doctor and the patient's slight movement of the teeth when chewing. Otherwise, there will be occlusal discomfort such as incomplete biting and inability to chew. In severe cases, it may even induce diseases such as temporomandibular joint disorder and oral and maxillofacial pain. Therefore, fine adjustment of the occlusion after orthodontic treatment is crucial to ensure the normal functional activities of the patient.

[0003] At present, the commonly used types of orthodontic retainers are Hawley retainers, laminated retainers and lingual fixed retainers. Hawley retainers are composed of bases, labial bows and clasps. When worn, the retainer does not cover the occlusal surface of the dentition, allowing the teeth to move vertically upward, which is conducive to the fine adjustment of the occlusal relationship. It has a good tooth retention effect, and the patient can take it off and put it on by himself. It is a widely used retainer; but the base of the Hawley retainer is large, the labial bow is exposed, and the steel wire in the anterior tooth area can be seen after wearing it. It lacks comfort and aesthetics. Some patients are not easy to accept it due to aesthetic issues. Laminated retainers are pressed with transparent plastic films based on occlusal plaster models. They have good aesthetics, but laminated retainers cover the occlusal surface and labial and lingual surfaces of the dentition, completely restricting the movement of teeth in the three-dimensional direction, making it impossible to adjust the occlusal relationship of the upper and lower teeth by themselves, and if they are not taken off and put on correctly, they may be damaged. The lingual fixed retainer is a device that uses twisted wire to bond the front teeth together. It is usually used in conjunction with a Hawley retainer to maintain the stability of the front teeth. Since the lingual fixed retainer is bonded to the lingual side of the front teeth, it cannot be seen from the outside and has the best invisible effect. However, since the retainer needs to be bonded to the teeth, the bonding position is not easy to clean and is prone to tartar accumulation, affecting oral health maintenance. In summary, the above commonly used orthodontic retainers cannot simultaneously meet the requirements of fine adjustment of the occlusal relationship and the patient's requirements for comfort and aesthetics. Summary of the invention

[0004] The purpose of the present invention is to provide an orthodontic lingual removable retainer which can realize fine self-adjustment of occlusal relationship and is aesthetically pleasing and comfortable.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An orthodontic lingual removable retainer comprises: a bow band, on which a plurality of accessory mounting grooves are arranged at intervals along the extending direction of the bow band; a tooth lingual bonding accessory arranged on the bow band, the tooth lingual bonding accessory comprising a bonding body and a connecting portion arranged on the back side of the bonding body, the connecting portion being adapted to cooperate with the accessory mounting groove, being accommodated in the accessory mounting groove, and being movable in the accessory mounting groove along the vertical direction.

[0007] Furthermore, the accessory mounting groove penetrates the bow band along the thickness direction of the bow band.

[0008] Furthermore, the free end of the connecting portion is a limiting portion, and the width of the limiting portion is greater than the width of the connecting portion.

[0009] Furthermore, the limiting portion is spherical or hemispherical.

[0010] Furthermore, the tooth lingual side bonding attachment is arranged corresponding to the attachment mounting groove.

[0011] Furthermore, the adhesive body is a square sheet.

[0012] Furthermore, the front side of the adhesive body is bonded to the lingual surface of the tooth, and the front side thereof corresponds to the curvature of the lingual surface of the tooth, and the connecting portion protrudes from the back side of the adhesive body.

[0013] Furthermore, the number of the bonding attachments on the lingual side of the teeth corresponds to the number of teeth.

[0014] Furthermore, an opening is provided at one end of the accessory installation slot, and the connecting portion is inserted into the accessory installation slot through the opening.

[0015] Furthermore, the arch band includes a maxillary arch band and / or a mandibular arch band, the maxillary arch band is adapted to the shape of the lingual side of the maxillary dentition and extends along the entire length of the lingual side of the maxillary dentition, and the mandibular arch band is adapted to the shape of the lingual side of the mandibular dentition and extends along the entire length of the lingual side of the mandibular dentition.

[0016] It can be seen from the above technical scheme that the bow band and the tooth lingual bonding attachment of the present invention adopt a movable connection structure, an attachment installation groove is set on the bow band, and the tooth lingual bonding attachment is set on the bow band through the cooperation of the connection part and the attachment installation groove, and can move in the vertical direction along the attachment installation groove. After the patient wears it, the bow band can maintain the position of the teeth in the horizontal direction on the one hand, and on the other hand, because the tooth lingual bonding attachment and the bow band can move relative to each other in the vertical direction, each tooth is allowed to move slightly in the vertical direction on the basis of maintaining the horizontal arrangement of the upper and lower jaw dentition, which is conducive to the self-fine adjustment of the occlusal relationship to establish the occlusal relationship of cusp-fossa anastomosis. Moreover, the tooth lingual bonding attachment of the present invention is attached to the lingual side of the tooth, has a small volume, and the retainer cannot be seen from the front teeth area, which can meet the patient's requirements for aesthetics and comfort; at the same time, the bow band can be detached from the tooth lingual bonding attachment, and the patient can wear or take it off by himself, which is convenient for cleaning and conducive to maintaining oral health. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a bow band according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of the lingual bonding attachment of the tooth according to an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of assembling the connecting portion of the adhesive body and the accessory mounting slot on the bow strap according to an embodiment of the present invention;

[0020] Figure 4 It is a schematic diagram of the tooth lingual bonding attachment installed on the maxillary arch band according to an embodiment of the present invention;

[0021] Figure 5 It is a schematic diagram of assembling another embodiment of the connection part of the adhesive body and the accessory mounting groove on the bow strap of the present invention;

[0022] Figure 6 It is a schematic assembly diagram of another embodiment of the connection portion of the adhesive body and the accessory mounting groove on the bow strap of the present invention.

[0023] The present invention is further described in detail below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings. When describing the embodiments of the present invention in detail, for the convenience of explanation, the drawings showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. It should be noted that the drawings are simplified and all use non-precise scales, which are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0025] The orthodontic lingual active retainer of the present invention comprises an arch band and a tooth lingual bonding attachment arranged on the arch band. The arch band is made of a hard material, is inelastic, and cannot be deformed. The arch band comprises a maxillary arch band for upper teeth and / or a mandibular arch band for lower teeth. The maxillary arch band and the mandibular arch band have the same basic structure. The structure of the orthodontic lingual active retainer of the present invention is described below by taking the maxillary arch band as an example.

[0026] like Figure 1 As shown, the maxillary arch band 1 is an arc-shaped sheet body, which is adapted to the shape of the lingual side of the maxillary dentition and extends along the full length of the lingual side of the maxillary dentition; correspondingly, for the mandibular arch band, it is adapted to the shape of the lingual side of the mandibular dentition and extends along the full length of the lingual side of the mandibular dentition. The maxillary arch band 1 is provided with a plurality of accessory installation grooves 1a arranged at intervals along the maxillary arch band 1, and the accessory installation grooves 1a are used to install the lingual bonding accessories 2 of the teeth. The accessory installation groove 1a of this embodiment is a through groove, which passes through the maxillary arch band 1 along the thickness direction of the maxillary arch band 1, and an opening 1b is provided at one end of the accessory installation groove 1a, and the opening 1b of the accessory installation groove 1a of the maxillary arch band 1 is located at the upper end of the accessory installation groove 1a. For the mandibular arch band, the opening of its accessory installation groove is located at the lower end of the accessory installation groove.

[0027] like Figure 2 As shown, the lingual tooth adhesive attachment 2 includes an adhesive body 2-1 and a connecting portion 2-2. The adhesive body 2-1 is used to be bonded to the lingual surface of the tooth. The front side of the adhesive body 2-1 is bonded to the lingual surface of the tooth, thereby fixing it on the tooth. The adhesive body 2-1 of this embodiment is a rectangular sheet. The adhesive surface (front side) of the adhesive body 2-1 that contacts the tooth corresponds to the curvature (concavity / convexity) of the lingual surface of the tooth, thereby being able to completely fit the lingual surface of the tooth. The adhesive body 2-1 is connected to the maxillary arch band 1 through the connecting portion 2-2. The connecting portion 2-2 is disposed on the back side of the adhesive body 2-1 and protrudes from the back side of the adhesive body 2-1. As shown Figure 3 As shown, the connecting portion 2-2 is adapted to fit with the accessory installation slot 1a of the maxillary arch band 1, and is accommodated in the accessory installation slot 1a and can move in the vertical direction in the accessory installation slot 1a. The free end of the connecting portion 2-2 of this embodiment is a spherical limiting portion 2-2a, and the width of the limiting portion 2-2a is greater than the width of the connecting portion 2-2. The limiting portion 2-2a can prevent the bonding body 2-1 (connecting portion 2-2) from coming off the maxillary arch band 1 (accessory installation slot 1a). Figure 4As shown, the limiting part 2-2a is passed through the opening 1b, and the connecting part 2-2 can be installed in the accessory installation groove 1a, so that the bonding body 2-1 is connected to the maxillary arch band 1. Since the width of the limiting part 2-2a is greater than the width of the connecting part 2-1, and the accessory installation groove 1b is adapted to the connecting part 2-1, after the limiting part 2-2a passes through the opening 1b, it is located on the back of the arch band. The limiting part 2-2a is limited by the arch band walls on both sides of the accessory installation groove 1b, so that the connecting part 2-1 connected thereto cannot be removed from the accessory installation groove 1b. In this embodiment, the connecting part 2-2 is cylindrical, and in other embodiments, the connecting part 2-2 can also be prismatic or other shapes.

[0028] The bow band and the lingual bonding accessories of the present invention can be made by 3D printing technology, and the production method is as follows: first, scan the patient's mouth to establish a digital dentition model of the patient; then design the upper and lower mandibular bow bands, the corresponding lingual bonding accessories of the teeth and the bonding positioning guide according to the model, and adjust the thickness of the bonding body of the lingual bonding accessories of the teeth and the angle between the bonding body and the connecting part to ensure that the lingual bonding accessories of the teeth can be moved in the vertical direction in the accessory mounting groove on the bow band after bonding; after the design is completed, use a 3D printer to print out the bow band and the lingual bonding accessories of the teeth.

[0029] When in use, firstly, the tooth lingual bonding attachment is bonded to the lingual surface of the patient's maxillary teeth and / or mandibular teeth through the bonding positioning guide plate, and one tooth lingual bonding attachment is bonded to one tooth; after bonding, the bow band is worn, and the bow band is connected to the bonding body through the connecting portion of the tooth lingual bonding attachment. Since the connecting portion can move in the vertical direction in the attachment mounting groove, the bow band will not limit the movement of the teeth in the vertical direction after wearing it, and the teeth can still adjust their positions in the vertical direction when biting. The bow band limits the movement of the tooth lingual bonding attachment in the horizontal direction, so it can be ensured that the position of the teeth in the horizontal direction will not change when biting, thereby realizing the self-fine adjustment of the occlusal relationship. Moreover, the bow band of the present invention can be separated from the tooth bonding attachment, and the patient can remove and wear the bow band by himself, which is convenient for cleaning teeth and maintaining oral health.

[0030] Of course, the technical concept of the present invention is not limited to the above embodiments, and many different specific solutions can be obtained according to the concept of the present invention. For example, the connecting portion 2-2 and the limiting portion 2-2a are connected as one body, and the cross-sectional shape is T-shaped ( Figure 5 ), after the connection part of the tooth lingual bonding attachment is placed in the attachment installation groove, the limiting part 2-2a is limited by the attachment installation groove 1b, thereby preventing the tooth lingual bonding attachment 2-1 from falling off the bow band 1; the attachment installation groove 1b can also be a trapezoidal groove with a small front and a large back, and the cross-sectional shape of the connection part 2-2 of the tooth lingual bonding attachment is also a corresponding trapezoidal shape ( Figure 6), the rear dimension of the connecting portion 2-2 is larger than the front dimension. After being placed in the accessory mounting groove 1b, the connecting portion 2-2 and the accessory mounting groove 1b cooperate with each other, and the rear portion thereof acts as a limiting portion, which can also prevent the lingual bonding accessory 2-1 of the tooth from falling off from the bow band 1; such changes and equivalent transformations should all be included in the scope described in the present invention.

Claims

1. Orthodontic lingual removable retainer, characterized in that: include: A bow band, wherein the bow band is provided with a plurality of accessory mounting slots arranged at intervals along the extending direction of the bow band; The tooth lingual bonding attachment is arranged on the bow band, and the tooth lingual bonding attachment includes an adhesive body and a connecting portion arranged on the back side of the adhesive body, the connecting portion is adapted to cooperate with the attachment mounting groove, is accommodated in the attachment mounting groove, and can move in the attachment mounting groove along the vertical direction, the front side of the adhesive body is bonded to the lingual surface of the tooth, and its front side corresponds to the curvature of the lingual surface of the tooth, the connecting portion protrudes from the back side of the adhesive body, and the free end of the connecting portion is a limiting portion, and the width of the limiting portion is greater than the width of the connecting portion.

2. The orthodontic lingual removable retainer according to claim 1, characterized in that: The accessory mounting groove penetrates the bow band along the thickness direction of the bow band.

3. The orthodontic lingual removable retainer according to claim 1, characterized in that: The limiting portion is spherical or hemispherical.

4. The orthodontic lingual removable retainer according to claim 1, 2 or 3, characterized in that: The tooth lingual side bonding attachment is arranged corresponding to the attachment mounting groove.

5. The orthodontic lingual removable retainer according to claim 1, 2 or 3, characterized in that: The bonding body is a square sheet.

6. The orthodontic lingual removable retainer according to claim 1, characterized in that: The number of the tooth lingual bonding attachments corresponds to the number of teeth.

7. The orthodontic lingual removable retainer according to claim 1, characterized in that: An opening is provided at one end of the accessory installation slot, and the connecting portion is installed into the accessory installation slot through the opening.

8. The orthodontic lingual removable retainer according to claim 1, 2 or 3, characterized in that: The arch band includes a maxillary arch band and / or a mandibular arch band, wherein the maxillary arch band is adapted to the shape of the lingual side of the maxillary dentition and extends along the entire length of the lingual side of the maxillary dentition, and the mandibular arch band is adapted to the shape of the lingual side of the mandibular dentition and extends along the entire length of the lingual side of the mandibular dentition.

Images