A combined lingual retainer device for orthodontic retainer and periodontal fixation splint

Abstract

The utility model provides a combined lingual retaining device for orthodontic retention and periodontal fixation splints, which is composed of a first adhesive plate, an adapter plate and a second adhesive plate that are sequentially locked. One end of the adapter plate is connected to the first adhesive plate by a rotational lock, and the other end of the adapter plate is connected to the second adhesive plate by an insertion lock. Both ends of the adapter plate are locked with the first adhesive plate and the second adhesive plate, and have a mobility of 0.05-0.1mm in both the horizontal and vertical directions, which can take into account the normal physiological mobility of the periodontal membrane of 0.15-0.38mm. The first adhesive plate, the adapter plate and the second adhesive plate are synchronously formed by digital 3D printing, and the strength is effectively guaranteed, so that the thickness can be thin and not easy to break.

Description

Technical Field

[0001] The utility model relates to oral orthodontics and treatment, in particular to a combined lingual retaining device for orthodontic retention and periodontal fixation splints. Background Art

[0002] After correction of malocclusion, the teeth or jaws tend to return to their original positions, which is clinically known as relapse. Retainers are needed to limit and maintain the spatial position of the dentition to prevent relapse. The disadvantages of existing retainers are as follows:

[0003] 1) Pressed film retainer: There are many steps in the operation, the patient has to wait for a long time, and the personnel cost is high. This type of retainer is easily deformed and damaged by the bite force, and needs to be replaced irregularly. Moreover, wearing it is not conducive to maintaining oral hygiene and is prone to breeding bacteria.

[0004] 2) Harry retainer: The production cost is high, and there is a strong foreign body sensation in the mouth. There is a lip bow on the lip side, which is slightly less aesthetic. Because it involves the retention of the clasp, it has extremely high requirements for the production personnel. Once it does not fit in the mouth, it is difficult to adjust clinically.

[0005] 3) Lingual twisted wire retainer: It is difficult to position the retainer in the mouth and needs to be positioned with the help of auxiliary tools such as guide plates. It is also prone to deviation. After bonding, the doctor needs to highly polish the lingual side. In addition, the bending of the twisted wire is still difficult to get rid of manual production, and the degree of fit with the lingual side of the tooth is greatly affected by the production personnel. It cannot be mass-produced and manufactured.

[0006] 4) Metal / ceramic lingual retainers: The structure has no mobility, cannot meet the normal physiological mobility of the periodontal membrane, and is easy to fall off.

[0007] In addition, the production process of traditional retainers is to remove the brackets after orthodontic treatment. Since the production takes a certain amount of time, there is a certain period of loss of control over the dentition, during which relapse may have occurred. In addition, patients need to wait or have multiple follow-up visits, which increases the patient's time cost.

[0008] One of the main clinical symptoms of periodontitis is loose teeth. Fixing some loose teeth to enable them to perform normal occlusal function is also an important part of periodontal treatment. In recent years, the fixation of loose teeth caused by periodontitis is to connect the loose teeth with periodontal fiber splints and fix them to healthy and stable adjacent teeth to form a chewing group, which helps to disperse the occlusal force and reduce the burden on the teeth, thus creating conditions for the periodontal tissues of the teeth to repair and perform normal functions.

[0009] However, loose tooth fixation also has problems with cleanliness and aesthetics. For example: 1) The bonding of fiber splints needs to be completed in the patient's mouth, which requires a high level of clinical skills of the operator and a long operation time, about 0.5-1h on average; 2) The loose tooth fixation of the lower front teeth is generally placed on the lingual side, which may aggravate the accumulation of plaque and the formation of stones; 3) Fiber splints are easy to stain and difficult to remove, and pigments are particularly easy to deposit at the edge transition. Utility Model Content

[0010] The utility model provides a combined lingual retaining device for orthodontic retention and periodontal fixation splints, the combined lingual retaining device is bonded to the lingual tooth surface of the front teeth, and the combined lingual retaining device is composed of a first bonding plate, a transfer plate and a second bonding plate which are sequentially locked and connected, wherein:

[0011] One end of the adapter plate is connected to the first adhesive plate by a rotation lock, and one end of the adapter plate is gap-matched with the first adhesive plate at the rotation lock connection, and the adapter plate and the first adhesive plate slide up and down and rotate forward and backward in a direction parallel to the lingual tooth surface of the anterior teeth;

[0012] The other end of the adapter plate is connected to the second adhesive plate by a plug-in lock, and the other end of the adapter plate is gap-matched with the second adhesive plate at the plug-in lock connection, and the adapter plate and the second adhesive plate slide up and down and forward and backward in the direction parallel to the lingual tooth surface of the front teeth.

[0013] Furthermore, the back bonding surfaces of the first bonding plate, the adapter plate and the second bonding plate that are in contact with the lingual tooth surfaces of the anterior teeth are all densely meshed retention bottom mesh structures.

[0014] Furthermore, a vertical rotating shaft is provided at one end of the first adhesive plate close to the adapter plate, and two upper and lower circular rings are provided at one end of the adapter plate, which are respectively inserted into the rotating shaft, and a movable gap of 0.05-0.1mm is provided between the rotating shaft and the circular rings, and a movable gap of 0.05-0.1mm is provided between the first adhesive plate and the adapter plate in the vertical direction.

[0015] Furthermore, a flat semicircular slot is provided inside one end of the second adhesive plate close to the adapter plate, and a flat semicircular plug block is provided at the other end of the adapter plate for inserting into the semicircular slot, and a movable gap of 0.05-0.1mm is provided between the outer edge of the semicircular plug block and the inner wall of the semicircular slot, and a movable gap of 0.05-0.1mm is provided between the semicircular plug block and the semicircular slot in the thickness direction.

[0016] Furthermore, the end face of the second adhesive plate close to the adapter plate is a plane, and the other end of the adapter plate is provided with limit strips extending up and down respectively on the rear side of the semicircular plug, and the limit strips cooperate with the plane to limit the relative position of the second adhesive plate closest to the adapter plate.

[0017] Furthermore, the front side of the second adhesive plate is provided with an opening penetrating to the semicircular slot.

[0018] Furthermore, the first adhesive plate, the adapter plate and the second adhesive plate are all formed by 3D printing of zirconium oxide.

[0019] The advantages of the utility model are:

[0020] 1) Both ends of the adapter plate are connected to the first adhesive plate and the second adhesive plate by locking, and have a mobility of 0.05-0.1mm in the horizontal and vertical directions, which can take into account the normal physiological mobility of the periodontal membrane of 0.15-0.38mm.

[0021] 2) The main body is connected by two locks through printing and molding. The whole process is digitally designed and manufactured. After the production is completed, there is no need for excessive post-processing, which greatly reduces the impact of human factors during production. The main body formed by printing has high precision and is highly consistent with the tooth surface shape. At the same time, the strength is guaranteed, which meets the patient's comfort and is not easy to deform.

[0022] 3) The surface is smooth, plaque adhesion is small, self-cleaning performance is good, the edge is shifted, and the foreign body sensation in the mouth is small.

[0023] 4) The bonding surface is treated with a bottom mesh shape, and the bonding strength is good.

[0024] 5) The structural components of the oral environment are stable and have good biocompatibility.

[0025] 6) It is bonded to the lingual side of the dentition and can be customized according to the color of the patient's dentition, with good aesthetics.

[0026] 7) The clinical operation is simple and the production cost is low.

[0027] 8) Patients can wear them immediately after the orthodontic treatment, without losing control over their dentition, and it can reduce the patient's time cost.

[0028] 9) Patients can wear the device immediately on the day of supragingival scaling without waiting or follow-up visits, thus reducing the patient’s time cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 This is a state diagram of the combined lingual retaining device of the utility model bonded to the lingual tooth surface of the front teeth;

[0031] Figure 2 is a front view of the combined lingual retainer;

[0032] Figure 3 is a back view of the combined lingual retaining device;

[0033] Figure 4 is a front view of the first bonding plate;

[0034] Figure 5 This is the front view of the adapter board;

[0035] Figure 6 is a front view of the second bonding plate;

[0036] Figure 7 is a schematic diagram of the combination of the first adhesive plate and the adapter plate;

[0037] Figure 8 is a schematic diagram of the connection between the first adhesive plate and the adapter plate;

[0038] Fig. 9 A clearance fit cross-sectional view of a connection between the first bonding plate and the adapter plate;

[0039] Fig.10 It is a schematic diagram of a semicircular plug at one end of the adapter plate;

[0040] Fig.11 is a schematic diagram of a semicircular slot at one end of the second adhesive plate;

[0041] Fig.12 A schematic diagram of the connection between the adapter plate and the second adhesive plate;

[0042] Fig.13 A schematic diagram showing a gap between the outer edge of the adapter plate and the interior of the semicircular slot of the second adhesive plate;

[0043] Fig.14 for Fig.13 Side angle view of . DETAILED DESCRIPTION

[0044] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0045] In order to thoroughly understand the present invention, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0046] The utility model combines oral digital technology with the characteristics of zirconia 3D printing to design a lingual retainer that can simultaneously achieve dentition constraint and satisfy the normal physiological mobility of the periodontal membrane. The lingual retainer is bonded to the lingual side of the anterior teeth, and the structure is highly consistent with the lingual shape of the anterior teeth, and the edge is movable. The structure is realized by digital design software in conjunction with the special digital attachment of this patent. The specific implementation method is to use digital design software based on the patient's intraoral scanning data to personalize the shape, range, thickness, etc. of the lingual retainer. Then the special digital attachment of this patent is placed in the designated position according to actual needs.

[0047] Before the patient's last orthodontic treatment, an intraoral scan of the tongue is performed, and the lingual retainer is made in a personalized manner. The lingual retainer is bonded on the day the patient's orthodontic treatment ends, and then the bracket is removed. There is no loss of control over the dentition during the entire process, and there is no need for subsequent waiting or follow-up visits, which reduces the patient's time cost.

[0048] Reference Figure 1-6 As shown, the utility model provides a combined lingual retainer device for orthodontic retention and periodontal fixation splint, such as Figure 1 As shown, the combined lingual retaining device 1 is bonded to the lingual tooth surface of the anterior teeth, and the area does not exceed 1 / 3 of the anterior teeth. Its structure is highly consistent with the lingual shape of the anterior teeth, avoiding the tooth extension gap, the edge is shifted, does not occupy and block the normal self-overflow channel between the teeth, and the foreign body sensation is relatively light. The thickness of the lingual retaining device is not easy to deform while meeting the strength requirements. The lingual retaining device is composed of a first adhesive plate 10, an adapter plate 30 and a second adhesive plate 20 that are sequentially locked and connected, and the two ends of the adapter plate 30 are interlocked with the first adhesive plate 10 and the second adhesive plate 20. There is a certain gap between the two ends of the adapter plate 30 and the first adhesive plate 10 and the second adhesive plate 20 in both the vertical and horizontal directions, so that the retaining device is difficult to separate by itself after interlocking, and can maintain a certain degree of mobility. In order to improve the retention force, the back bonding surfaces of the first adhesive plate 10, the adapter plate 30 and the second adhesive plate 20 that contact the lingual tooth surface of the anterior teeth are all dense mesh retention bottom mesh structures 2.

[0049] like Figure 7-9 As shown, one end of the adapter plate 30 is connected to the first adhesive plate 10 by a rotation lock, and one end of the adapter plate 30 is gap-matched with the first adhesive plate 10 at the rotation lock connection, and the adapter plate 30 and the first adhesive plate 10 slide up and down and rotate forward and backward in a direction parallel to the lingual tooth surface of the anterior teeth. The end of the first adhesive plate 10 close to the adapter plate 30 is provided with two coaxial vertical shafts 11, and one end of the adapter plate 30 is provided with two upper and lower rings 31 respectively inserted into the shafts 11, and a movable gap of 0.05-0.1mm is provided between the shafts 11 and the rings 31, and a movable gap of 0.05-0.1mm is provided between the first adhesive plate 10 and the adapter plate 30 in the vertical direction.

[0050] like Figure 10-14 As shown, the other end of the adapter plate 30 is connected to the second adhesive plate 20 by plugging and locking. At the plugging and locking connection, the other end of the adapter plate 30 is gap-matched with the second adhesive plate 20, and the adapter plate 30 and the second adhesive plate 20 move relative to each other in the plane 23 where the thickness is located. A flat semicircular slot 22 is provided inside the end of the second adhesive plate 20 close to the adapter plate 30, and a flat semicircular plug 32 for inserting into the semicircular slot 22 is provided at the other end of the adapter plate 30. A movable gap of 0.05-0.1mm is provided between the outer edge of the semicircular plug 32 and the inner wall of the semicircular slot 22, and a movable gap of 0.05-0.1mm is provided between the semicircular plug 32 and the semicircular slot 22 in the thickness direction.

[0051] The two ends of the adapter plate 30 of the utility model have a 0.05-0.1mm movable space between the first adhesive plate 10 and the second adhesive plate 20 in the horizontal direction and the vertical direction, taking into account the normal physiological mobility of natural teeth. The two ends of the adapter plate 30 and the connecting plates of the first adhesive plate 10 and the second adhesive plate 20 are affixed with protective plastic stickers to prevent the adhesive from flowing into the locking structure when the device is bonded. After bonding, the plastic stickers can be removed.

[0052] The end face of the second adhesive plate 20 close to the adapter plate 30 is a plane 23. The other end of the adapter plate 30 is provided with a limit strip 33 extending up and down respectively on the rear side of the semicircular plug block 32. The limit strip 33 cooperates with the plane 23 to limit the relative position of the second adhesive plate 20 closest to the adapter plate 30, which is conducive to quick assembly.

[0053] The front side of the second adhesive plate 20 is provided with an opening 24 that penetrates the semicircular slot 22. The semicircular slot 22 can be connected to the outside through the opening 24 to prevent excessive bacterial growth inside. The opening width of the opening 24 is smaller than the inner diameter of the semicircular slot 22 to prevent the semicircular plug 32 from falling out of the second adhesive plate 20.

[0054] In one embodiment, the first adhesive plate 10, the adapter plate 30 and the second adhesive plate 20 are all made of zirconium oxide or 3D printed using other new composite materials. Preferably, the structure is realized by 3D printing of zirconium oxide and water-soluble support rod technology. The specific implementation method is that the first adhesive plate 10, the adapter plate 30 and the second adhesive plate 20 are made of zirconium oxide material, and the gap is filled with support rod material, and printed layer by layer. After printing, the support rod is dissolved in water, so that the two ends of the adapter plate 30 can be flexibly connected with the first adhesive plate 10 and the second adhesive plate 20 and have a mobility of 0.05-0.1mm.

[0055] The new bonded combined lingual retainer device printed by zirconia 3D has the following characteristics:

[0056] 1) The shape is highly consistent with the lingual shape of the tooth surface and has high precision.

[0057] 2) It has a high-precision yin-yang buckle / yin-yang lock structure that can meet the normal physiological mobility of the periodontal membrane.

[0058] 3) The whole process of digital design, production and processing greatly reduces the impact of human factors during production.

[0059] 4) The area is small, the shape avoids the tooth extension gap, and does not occupy and block the normal overflow channel between teeth.

[0060] 5) It can be made thinner and not easy to break.

[0061] 6) The structure and composition of the intraoral environment are stable and biocompatibility is good, which improves the problem of bacteria breeding in retaining devices.

[0062] 7) Bonded to the lingual side of the dentition, it solves the problem of poor aesthetics of traditional retainers.

[0063] 8) The aging performance is stable within the set clinical use period and does not need to be replaced unless there are special circumstances.

[0064] 9) The clinical operation is convenient and no adjustment is required.

[0065] 10) Patients can wear the brackets immediately on the day they remove them, without waiting or follow-up visits, thus reducing patients’ time costs.

[0066] 11) After the patient undergoes supragingival scaling surgery, the device performs an intraoral scan, is individually processed and manufactured, and can be worn immediately on the same day, without the need for waiting or subsequent follow-up visits, thus reducing the patient's time cost.

[0067] The new bonded combined periodontal splint printed by zirconia 3D has the following characteristics:

[0068] 1) The shape is highly consistent with the lingual shape of the tooth surface and has high precision.

[0069] 2) It has a high-precision yin-yang buckle structure that can meet the normal physiological mobility of the periodontal membrane.

[0070] 3) The whole process of digital design, production and processing greatly reduces the impact of human factors during production.

[0071] 4) The area is small, the shape avoids the tooth extension gap, and does not occupy and block the normal overflow channel between teeth.

[0072] 5) It can be made thinner and not easy to break.

[0073] 6) In vitro shaping and polishing can effectively reduce stone deposition and pigment deposition.

[0074] 7) The structural components of the oral environment are stable and not easily stained.

[0075] 8) The aging performance is stable within the set clinical use period and does not need to be replaced unless there are special circumstances.

[0076] 9) The clinical operation is convenient and no adjustment is required.

[0077] 10) The patient can wear it immediately on the day of supragingival scaling without waiting or follow-up visits, thus reducing the patient’s time cost.

[0078] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific implementation methods, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the utility model without departing from the scope of the technical solution of the utility model, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A combined lingual retainer for orthodontic retention and periodontal fixation splint, the combined lingual retainer (1) being bonded to the lingual tooth surface of the anterior teeth, characterized in that: The combined tongue-side retaining device (1) is composed of a first adhesive plate (10), a transfer plate (30) and a second adhesive plate (20) which are sequentially locked and connected, wherein: One end of the adapter plate (30) is connected to the first adhesive plate (10) by a rotational lock, and one end of the adapter plate (30) is loosely matched with the first adhesive plate (10) at the rotational lock connection, so that the adapter plate (30) and the first adhesive plate (10) slide up and down and rotate forward and backward in a direction parallel to the lingual tooth surface of the front teeth; The other end of the adapter plate (30) is connected to the second adhesive plate (20) by a plug-in lock. At the plug-in lock connection, the other end of the adapter plate (30) is gap-matched with the second adhesive plate (20), and the adapter plate (30) and the second adhesive plate (20) slide up and down and forward and backward in a direction parallel to the lingual tooth surface of the front teeth.

2. A combined lingual retainer device for orthodontic retainer and periodontal fixation splint according to claim 1, characterized in that: The back bonding surfaces of the first bonding plate (10), the adapter plate (30) and the second bonding plate (20) that contact the lingual tooth surfaces of the front teeth are all densely meshed retention bottom mesh structures (2).

3. A combined lingual retainer device for orthodontic retainer and periodontal fixation splint according to claim 1, characterized in that: A vertical rotating shaft (11) is provided at one end of the first adhesive plate (10) close to the adapter plate (30), and two upper and lower circular rings (31) inserted into the rotating shaft (11) are provided at one end of the adapter plate (30), and a movable gap of 0.05-0.1 mm is provided between the rotating shaft (11) and the circular rings (31), and a movable gap of 0.05-0.1 mm is provided between the first adhesive plate (10) and the adapter plate (30) in the vertical direction.

4. A combined lingual retainer device for orthodontic retainer and periodontal fixation splint according to claim 2, characterized in that: A flat semicircular slot (22) is provided inside one end of the second adhesive plate (20) close to the adapter plate (30), and a flat semicircular plug block (32) for inserting into the semicircular slot (22) is provided at the other end of the adapter plate (30), and a movable gap of 0.05-0.1 mm is provided between the outer edge of the semicircular plug block (32) and the inner wall of the semicircular slot (22), and a movable gap of 0.05-0.1 mm is provided between the semicircular plug block (32) and the semicircular slot (22) in the thickness direction.

5. A combined lingual retainer device for orthodontic retainer and periodontal fixation splint according to claim 4, characterized in that: The end surface of the second adhesive plate (20) close to the adapter plate (30) is a plane (23), and the other end of the adapter plate (30) is provided with a limit strip (33) extending up and down respectively on the rear side of the semicircular plug block (32), and the limit strip (33) cooperates with the plane (23) to limit the relative position of the second adhesive plate (20) closest to the adapter plate (30).

6. A combined lingual retainer device for orthodontic retainer and periodontal fixation splint according to claim 5, characterized in that: The front surface of the second adhesive plate (20) is provided with an opening (24) penetrating to the semicircular slot (22), and the opening width of the opening (24) is smaller than the inner diameter of the semicircular slot (22).

7. A combined lingual retainer device for orthodontic retainer and periodontal fixation splint according to claim 1, characterized in that: The first adhesive plate (10), the adapter plate (30) and the second adhesive plate (20) are all formed by 3D printing of zirconium oxide.

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