Adjustable improved traction hook depressing molar device

Abstract

The utility model relates to the field of maxillary extension molar depressing, in particular to an adjustable improved traction hook molar depressing device. Comprising a cast belt ring adhered to a mesial adjacent tooth and an opposite homonymous tooth of the extended molar, omega-shaped parts positioned at two ends of the middle part of the palate and welded with the cast belt ring, and cantilevers fixed at two sides of a cheek tongue of the cast belt ring and extending towards the extended molar, the traction hooks are located at the tail end of the cantilever, the rubber band is hung between the two traction hooks and used for pressing and extending molars, the cast belt ring cheek side is welded with a cheek pipe, and each traction hook comprises a right-angle part connected in a hanging mode, a V-shaped part arranged at the end of the right-angle part and a bent part arranged at the end, away from the right-angle part, of the V-shaped part and used for stabilizing the rubber band. According to the adjustable improved traction hook depressing molar device, the angle can be adjusted when the right-angle part is mounted, so that the height of the traction hook can be adjusted, a stress application point is close to an impedance center as far as possible, the whole treatment is noninvasive, and implantation of a planting nail is not needed.

Description

Technical Field

[0001] The utility model relates to the field of maxillary elongation and molar depression, in particular to an adjustable improved traction hook molar depression device. Background Art

[0002] In oral clinics, it is common that the long-term loss of mandibular molars causes the elongation of the antagonist teeth, which affects the restoration of dentures. Traditional solutions include pulpectomy and crowning, surgical improvement, and orthodontic depression. Existing orthodontic technologies commonly use implant support, bracketless invisible braces, and modified transverse palatal bars to depress the elongated maxillary molars. However, since the implantation of implant screws is invasive and there are risks of implant screw breakage, loosening, and falling off, it will cause patients to be afraid; bracketless invisible braces are relatively expensive for patients with local orthodontics before implant restoration; the existing modified transverse palatal bar traction hook has limited restraint on the rubber band, and the rubber band is easy to slide from the occlusal surface to the tooth space during wearing, and it cannot play the role of continuously and stably depressing and elongating the molars.

[0003] Therefore, it is necessary to provide an adjustable improved traction hook lowering molar device to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an adjustable improved traction hook lowering molar device.

[0005] The utility model provides an adjustable improved traction hook device for depressing molars, comprising a casting band bonded to the mesial adjacent teeth and the teeth of the same name on the opposite side of the elongated molar, omega curved pieces located at both ends of the middle part of the upper palate and welded to the casting band, cantilevers welded to the buccal and lingual sides of the casting band and extending toward the elongated molar, a traction hook located at the tail end of the cantilever, and a rubber band suspended between the two traction hooks for depressing the elongated molar, a buccal tube being fixed on the buccal side of the casting band, the traction hook comprising a right-angled portion for suspension connection, a V-shaped portion arranged at the end of the right-angled portion, and a bent portion arranged at one end of the V-shaped portion away from the right-angled portion for stabilizing the rubber band, and a closing opening for passing the rubber band is provided between the bent portion and the right-angled portion.

[0006] Preferably, a ball-off prevention portion is provided at the end of the bending portion.

[0007] Preferably, the angle of the V-shaped portion is less than 90 degrees.

[0008] Preferably, the traction hook is formed by bending a steel wire with a diameter of 1 mm.

[0009] Preferably, the casting belt ring is fixed to the omega curved piece and the cantilever by welding.

[0010] Compared with the related art, the utility model provides the following beneficial effects:

[0011] 1. The right-angle part can adjust the angle during installation, thereby adjusting the height of the traction hook, and making the force application point as close as possible to the impedance center.

[0012] 2. The whole treatment is non-invasive and does not require the implantation of orthodontic mini-implants.

[0013] 3. The device is easy to manufacture, inexpensive, and easy for patients to accept.

[0014] 4. During the intrusion process, there is no extrusion reaction force on the anchorage teeth.

[0015] 5. Force is applied simultaneously on the buccal and lingual sides, with the same magnitude of force on both sides, and the force is continuous and stable, so there will be no buccolingual inclination of the molars during intrusion.

[0016] 6. Use a cast band and there is no need to separate teeth.

[0017] 7. After intrusion, brackets can be bonded to align the intruded teeth and adjacent teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model after removing the rubber band;

[0019] Figure 2 is a schematic diagram of the cast band structure of the present utility model;

[0020] Figure 3 is a schematic diagram of the present utility model actually installed on teeth.

[0021] Reference numerals in the figures: 1, cast band; 2, omega loop; 3, cantilever; 4, traction hook; 5, rubber band; 6, buccal tube; 41, right-angle part; 42, V-shaped part; 43, bent part; 44, closing part; 45, anti-disengagement ball part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0023] Please refer to Figures 1 to 3 , an adjustable improved traction hook molar intrusion device, which is specially designed for orthodontic treatment, aiming to effectively intrude the maxillary elongated molars while ensuring the stability and comfort of the treatment process. The device mainly consists of key parts such as a cast band 1, an omega loop 2, a cantilever 3, a traction hook 4, a rubber band 5, and a buccal tube 6.

[0024] The cast band 1 is precisely bonded to the mesial adjacent tooth of the elongated molar and the contralateral homonymous tooth, providing a solid support foundation for the whole device through tight bonding. The omega loops 2 at both ends of the mid-palatal region are firmly connected to the cast band 1, forming a stable fixed structure that can not only transmit the traction force but also be adjusted according to the treatment needs.

[0025] The cantilever 3 is cleverly welded on both sides of the buccal and lingual sides of the casting band ring 1 and extends toward the elongated molar, becoming the key path for the transmission of traction force. The traction hook 4 at the tail end of the cantilever 3, as the hanging point of the rubber band 5, is ingeniously designed, including a right-angle portion 41, a V-shaped portion 42 and a bent portion 43. These designs ensure that the rubber band 5 can be stably fixed on the traction hook, thereby ensuring the stable transmission of traction force.

[0026] The rubber band 5 is a key element in the device. It is suspended between the two traction hooks 4 and generates traction force through elastic stretching, which acts on the elongated molars to exert downward pressure on them. The elasticity of the rubber band 5 can be adjusted according to the treatment needs to provide different traction forces, thereby achieving the gradual depression of the molars.

[0027] In addition, the buccal side of the casting band 1 is also welded with a buccal tube 6, which is used to further align the elongated molars. By bonding brackets to the elongated molars and passing orthodontic wires through the buccal tube 6 and the brackets, three-dimensional control of the elongated molars can be effectively achieved.

[0028] A closing opening 44 is provided between the bent portion 43 and the right angle portion 41 of the traction hook 4, allowing the rubber band 5 to pass through easily, and an anti-ball part 45 is also provided at the end of the bent portion 43, effectively preventing the rubber band 5 from falling off during the traction process. The angle of the V-shaped portion 42 is less than 90 degrees, ensuring that the rubber band 5 will not cause the molars to move left and right when pressure is generated, thereby improving the accuracy and stability of treatment.

[0029] The traction hook 4 is made of 1mm diameter steel wire, which ensures sufficient strength and comfort. The casting band ring 1 is fixed to the omega curved piece 2 and the cantilever 3 by welding. This connection method ensures the stability and durability of the entire device structure, so that it can withstand various challenges during orthodontic treatment.

[0030] Casting band 1 is made for the adjacent teeth of the elongated teeth. Omega curved pieces 2 are made between the casting band 1, 2mm away from the palatal mucosa. The buccal tube 6 is bonded to the buccal side of the casting band 1 to facilitate further alignment after depression. The wire diameter of the traction hook 4 is 1mm. The height is 1-2mm below the bifurcation of the molar root, and clinically about 6-7mm below the gingival margin. Clinically, the device is bonded to the maxilla with adhesive. The buccal and lingual traction hooks of the teeth need to be depressed, and the chain-shaped rubber band 6 is passed through the occlusal surface, and force is applied every 4 weeks.

[0031] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable improved traction hook lowering molar device, characterized in that: The invention comprises a casting band (1) bonded to the adjacent teeth and the teeth of the same name on the opposite side of the elongated molar, an omega curved piece (2) located at both ends of the middle part of the upper palate and welded to the casting band (1), a cantilever (3) welded to the buccal and lingual sides of the casting band (1) and extending toward the elongated molar, a traction hook (4) located at the tail end of the cantilever (3), and a rubber band (5) suspended between the two traction hooks (4) for depressing the elongated molar, wherein a buccal tube (6) is fixed on the buccal side of the casting band (1), and the traction hook (4) comprises a right angle portion (41) for suspension connection, a V-shaped portion (42) arranged at the end of the right angle portion (41), and a bending portion (43) arranged at the end of the V-shaped portion (42) away from the right angle portion (41) for stabilizing the rubber band (5), and a closing opening (44) for passing the rubber band (5) is provided between the bending portion (43) and the right angle portion (41).

2. The adjustable improved traction hook device for lowering teeth according to claim 1, characterized in that: The end of the bending portion (43) is provided with a ball-off preventing portion (45).

3. The adjustable improved traction hook depressing molar device according to claim 1, characterized in that: The angle of the V-shaped portion (42) is less than 90 degrees.

4. The adjustable improved traction hook depressing molar device according to claim 2, characterized in that: The traction hook (4) is made of a bent steel wire with a diameter of 1 mm.

5. The adjustable improved traction hook device for lowering teeth according to claim 1, characterized in that: The casting belt ring (1), the omega curved piece (2) and the cantilever (3) are fixed by welding.

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