Fixing support for depressing second molar and depressing device

Abstract

The utility model discloses a fixing support and a depressing device for depressing a second molar, the fixing support comprises a retention bottom plate which is noninvasively arranged on an abutment tooth, a traction hook which is opposite to a tooth occlusal surface is arranged on the retention bottom plate, and the cross section of the traction hook is U-shaped. According to the utility model, frequent taking off and wearing are not needed, foreign body sensation is small, and an anchorage nail can be prevented from being planted in the oral cavity of a patient, so that the technical effect of non-invasively and comfortably depressing the molar is realized. The utility model has the advantages of reliable and simple structure, strong practicability and low cost, and has excellent popularization value.

Description

Technical Field

[0001] The utility model relates to the field of oral instruments, in particular to a fixed bracket for depressing the second molar, and a depressing device adopting the fixed bracket. Background Art

[0002] In oral clinical practice, for the treatment of the elongation of maxillary molars caused by the long-term absence of teeth, orthodontic depression treatment is usually adopted. The traditional orthodontic depression treatment generally uses a bite plate or an implant anchorage screw to depress the elongation of the maxillary molars. If the bite plate is used, the foreign body sensation of the bite plate is strong, and the patient needs to cooperate with the frequent removal, wearing and cleaning, and the operation is rather troublesome; if the implant anchorage screw is used, due to the long implantation time, it is difficult to avoid the treatment risks of the breakage, loosening and falling off of the anchorage screw after implantation.

[0003] In view of the above situation, the existing orthodontic depression treatment uses a micro-implant anchorage screw to assist in depressing the elongated molars, but it is still an invasive treatment method. Due to the different bone densities of different patients, the success probability of the micro-implant anchorage screw is also different. Coupled with the fear of some patients of the micro-implant anchorage screw implantation surgery, it often leads to an increase in the difficulty of the treatment process. Therefore, how to solve the above problems is an urgent problem to be solved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fixed bracket and a depressing device for depressing the second molar, which are simple, efficient, safe and non-invasive.

[0005] To achieve the above purpose, the fixed bracket for depressing the second molar provided by the utility model includes a retention base plate installed on the abutment tooth non-invasively, and a traction hook with a cross-section of U-shaped is arranged on the retention base plate and faces the opposite direction of the tooth occlusal surface.

[0006] For the above-mentioned fixed bracket for depressing the second molar, the retention base plate and the traction hook are detachably connected, and different lengths of the traction hook can be replaced for the retention base plate according to actual needs; of course, the retention base plate and the traction hook can also be fixedly connected, but the required length of the traction hook needs to be preset in advance.

[0007] The "non-invasive" described in the utility model means that it does not involve the destruction of the body tissue structure.

[0008] The abutment tooth on which the retention base plate of the utility model is installed needs to have a sound opposing tooth. The opposing tooth refers to the mandibular abutment tooth corresponding to the position of the maxillary abutment tooth to ensure the depressing effect of the fixed bracket on the second molar.

[0009] For the above-mentioned fixed bracket for depressing the second molar, a connecting arm is arranged between the retention base plate and the traction hook, and the connecting arm extends obliquely upward to the rear of the same side of the abutment tooth.

[0010] For the above-mentioned fixed bracket for depressing the second molar, the connecting arm maintains a parallel distance of at least 0.5 mm from the gingiva of the abutment tooth.

[0011] For the above-mentioned fixed bracket for depressing the second molar, one end of the connecting arm is connected to the retention base plate, and the other end is connected to the traction hook. The connecting corner of the connecting arm has an arc transition.

[0012] For the above-mentioned fixed bracket for depressing the second molar, the retention base plate is made by 3D stereolithography or machine casting; if the retention base plate is made by 3D stereolithography, a preset mesh surface is added to the surface in contact with the abutment tooth to increase the friction for facilitating the bonding between the abutment tooth and the retention base plate; if the retention base plate is made by machine casting, since the surface in contact with the abutment tooth is smooth, bonding holes can be provided on the retention base plate, and the bonding structure will be more reliable when the bonding material overflows from the bonding holes.

[0013] The fixed bracket for depressing the second molar of the present utility model adopts the above technical solution. By non-invasively installing the retention base plate at the lingual or buccal position of the abutment tooth, the retention base plate fixes the traction rope or chain elastic band through the U-shaped traction hook without falling off, so as to achieve the technical purpose of depressing the molar.

[0014] Furthermore, a depressing device adopting the above fixed bracket includes a first fixed bracket corresponding to the buccal position of the abutment tooth and a second fixed bracket corresponding to the lingual position of the abutment tooth. The first retention base plate on the first fixed bracket and the second retention base plate on the second fixed bracket are respectively non-invasively installed at the buccal position and the lingual position of the abutment tooth.

[0015] The above-mentioned depressing device further includes at least one lingual button non-invasively installed on the tooth. The first traction hook of the first fixed bracket and the second traction hook of the second fixed bracket are respectively connected to the lingual button through elastic members.

[0016] The elastic member can be a chain elastic band or other traction lines made of elastic materials such as elastic threads.

[0017] The lingual button can be adhesively fixed between the teeth, can be adhesively fixed at the lingual or buccal position of the tooth, or can be adhesively fixed between the teeth, at the lingual position and the buccal position of the tooth respectively.

[0018] The first traction hook of the first fixed bracket and the second traction hook of the second fixed bracket are connected to the lingual button through elastic threads to achieve the purpose of applying force.

[0019] For the above-mentioned depressing device, the first fixed bracket and the second fixed bracket are installed at the same height at the buccal position and the lingual position of the abutment tooth respectively.

[0020] For the above-mentioned intrusion device, the second fixing bracket is installed on the buccal side of the abutment tooth at a position not higher than the cusp of the dental cavity.

[0021] The intrusion device of the present utility model adopts the above technical solution. By non-invasively installing the first retention base plate and the second retention base plate on the buccal side position and the lingual side position of the abutment tooth respectively, and applying vertical forces simultaneously by the first retention base plate on the buccal side and the second retention base plate on the lingual side, the technical purpose of intrusion can be achieved with a light force in a short time, greatly saving the patient's follow-up visit time and cost. It not only has a small sense of foreign body, but also can avoid implanting anchorage pins in the patient's oral cavity, thus achieving the technical effect of non-invasive and comfortable intrusion of the molar teeth. Brief Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the fixing bracket for second molar intrusion of the present utility model (fixed connection between the retention base plate and the traction hook).

[0023] Figure 2 It is a schematic structural diagram of the fixing bracket for second molar intrusion of the present utility model (the retention base plate cast by a machine).

[0024] Figure 3 It is a schematic structural diagram of the fixing bracket for second molar intrusion of the present utility model applied on the abutment tooth.

[0025] Figure 4 It is a schematic structural diagram of the second molar intrusion device of the present utility model applied on the abutment tooth.

[0026] In the figure: 1 is the abutment tooth, 11 is the first fixing bracket, 11a is the first traction hook, 11b is the first retention base plate, 12 is the second fixing bracket, 12a is the second traction hook, 12b is the second retention base plate, 2 is the retention base plate, 21 is the bonding hole, 3 is the traction hook, 4 is the connecting arm, 5 is the lingual buckle, 6 is the elastic member, A is the 5th abutment tooth, B is the 6th abutment tooth, and C is the 7th tooth. Detailed Description of the Preferred Embodiment

[0027] The present utility model will be further described below in conjunction with the drawings and the detailed description of the preferred embodiment.

[0028] Refer to Figure 1As shown, a fixed bracket for depressing the second molar includes a retention base plate 2 non-invasively mounted on two abutment teeth 1, where the two abutment teeth 1 are the 5th abutment tooth A and the 6th abutment tooth B. The retention base plate 2 is mounted on the 5th abutment tooth A and the 6th abutment tooth B to depress the 7th tooth C; a traction hook 3 facing the opposite direction to the occlusal surface of the tooth is provided on the retention base plate 2, and the cross-section of the traction hook 3 is U-shaped; a connecting arm 4 extending obliquely upward to the same side of the abutment tooth 1 is provided between the retention base plate 2 and the traction hook 3. The retention base plate 2 is fixedly connected to the traction hook 3 through the connecting arm 4, and the connecting arm 4 maintains a parallel distance of at least 0.5 mm from the abutment tooth mucosa; the corners of the connecting arm 4 with the retention base plate 2 and the traction hook 3 are in arc transition.

[0029] The 7th tooth described in the present utility model is located on both sides of the upper jaw, respectively the second premolars on the left and right sides. The adult tooth arrangement from the middle to both sides is in sequence: central incisor, lateral incisor, canine, first premolar, second premolar, where the second premolar is the 7th tooth; as a premolar, the 7th tooth is mainly responsible for chewing food. Its shape is suitable for grinding food, which is beneficial to digestion.

[0030] Refer to Figure 2 As shown, the retention base plate 2 is cast by a machine, and at least one bonding hole 21 is provided on the retention base plate 2. The retention base plate 2 is bonded to the abutment tooth through a resin adhesive, and the resin adhesive overflows through the bonding hole, making the bonding structure more reliable.

[0031] Refer to Figure 3 and Figure 4 As shown, a depressing device composed of a fixed bracket for depressing the second molar includes a first fixed bracket 11 corresponding to the buccal positions of two abutment teeth 1, a second fixed bracket 12 corresponding to the lingual positions of two abutment teeth 1, and a lingual button 5 non-invasively mounted on the teeth. The first retention base plate 11b and the second retention base plate 12b are respectively non-invasively mounted on the buccal and lingual positions of two abutment teeth 1, and the first traction hook 11a of the first fixed bracket 11 and the second traction hook 12a of the second fixed bracket 12 are respectively connected to the lingual button 5 through an elastic member 6.

[0032] The first retention base plate 11b and the second retention base plate 12b are respectively mounted at the same height on the buccal and lingual positions of two abutment teeth 1; the second fixed bracket 12 is mounted on the buccal position of the abutment tooth 1 not higher than the bulge of the dental cavity.

[0033] The fixed bracket for depressing the second molar can be used alone, generally for assisting in depressing the lingual cusp of invisible or fixed orthodontics; the fixed bracket for depressing the second molar can also be combined into a pair for use as a depressing device.

[0034] When the intrusion device of the present utility model is actually used, the first retention base plate 11b and the second retention base plate 12b that fit two abutment teeth are manufactured by 3D stereolithography or casting, and then the first retention base plate 11b and the second retention base plate 12b are adhesively fixed to the buccal position and the lingual position of the two abutment teeth 1 in sequence. During the stage before the adhesive fixation is completed, the first retention base plate 11b and the second retention base plate 12b are connected by a ligature wire. After the first retention base plate 11b and the second retention base plate 12b are adhesively fixed, the first traction hook 11a and the second traction hook 12a are respectively connected to the lingual button 5 adhesively fixed in the center of the posterior teeth through a chain rubber band or an elastic traction wire, so as to achieve precise force application to achieve the purpose of intruding the molars in a short time.

[0035] In summary, the present utility model has been made into an actual sample and tested many times as described in the specification and the illustrated content. From the test results, it can be proved that the present utility model can achieve its expected purpose, and its practical value is beyond doubt. The above embodiments are only used to illustrate the present utility model for convenience, and do not impose any formal restrictions on the present utility model. Any person with ordinary knowledge in the relevant technical field, without departing from the technical features of the present utility model, makes local changes or modified equivalent embodiments using the technical content disclosed by the present utility model, and without departing from the technical feature content of the present utility model, still belongs to the scope of the technical features of the present utility model.

Claims

1. A fixed bracket for lowering the second molar, characterized in that: It comprises a retention base plate (2) which is non-invasively mounted on an abutment tooth (1), and a traction hook (3) which faces in the opposite direction to the tooth occlusal surface is provided on the retention base plate (2), and the cross section of the traction hook (3) is U-shaped.

2. The fixing bracket according to claim 1, characterized in that: The retaining base plate (2) and the traction hook (3) are fixedly connected.

3. The fixing bracket according to claim 1, characterized in that: A connecting arm (4) is provided between the retaining base plate (2) and the traction hook (3), and the connecting arm (4) extends toward the upper back of the ipsilateral abutment tooth (1).

4. The fixing bracket according to claim 3, characterized in that: The connecting arm (4) maintains a parallel distance of at least 0.5 mm with the abutment tooth mucosa.

5. The fixing bracket according to claim 3, characterized in that: One end of the connecting arm (4) is connected to the fixed base plate (2), and the other end is connected to the traction hook (3); the connecting corner of the connecting arm (4) is an arc-shaped transition.

6. The fixing bracket according to claim 1, characterized in that: The retaining base plate (2) is formed by 3D printing.

7. The fixing bracket according to claim 1, characterized in that: The retaining base plate (2) is cast by a machine, and at least one bonding hole is provided on the retaining base plate (2) to make the bonding between the retaining base plate (2) and the abutment (1) more secure.

8. A pressing device using the fixing bracket according to any one of claims 1 to 7, characterized in that: The invention comprises a first fixing bracket (11) corresponding to the buccal position of the abutment tooth (1), and a second fixing bracket (12) corresponding to the lingual position of the abutment tooth (1); a first fixing base plate (11b) on the first fixing bracket (11) and a second fixing base plate (12b) on the second fixing bracket (12) are respectively non-invasively mounted on the buccal position and the lingual position of the abutment tooth (1).

9. The pressing device according to claim 8, characterized in that: It also comprises at least one lingual buckle (5) non-invasively mounted on the teeth, wherein the first traction hook (11a) of the first fixing bracket (11) and the second traction hook (12a) of the second fixing bracket (12) are respectively connected to the lingual buckle (5) via an elastic member (6).

10. The pressing device according to claim 8, characterized in that: The height at which the first retention base plate (11b) is installed on the buccal side of the abutment tooth (1) is the same as the height at which the second retention base plate (12b) is installed on the lingual side of the abutment tooth (1).

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