Multifunctional posterior tooth locking appliance

Abstract

The utility model provides a multifunctional posterior tooth locking appliance. The multifunctional posterior tooth locking appliance comprises a cast crown installed on molars on the two sides, brackets and buccal tubes are arranged on the outer side of the cast crown, a traction hook is arranged on the inner side of the metal cast crown, a hook part is arranged at the tail end of the traction hook, the traction hook is in an L shape, and a torsional spring is arranged at the joint of the traction hook. The cast crowns on the two sides are fixedly connected through a connecting rod, the middle of the connecting rod is bent towards the incisor, and a plane or slope guide plate located on the palatal side is fixedly installed on the connecting rod and covers the palatal sides of the central incisor, the lateral incisor and the canine. The multifunctional rear tooth locking appliance provided by the utility model has the advantages of accurate force application, multifunctional design, high comfort level, strong adaptability and the like, solves the problems in the prior art, provides a new effective means for locking tooth correction, and has important clinical application value.

Description

Technical Field

[0001] The utility model relates to orthodontic treatment, in particular to a multifunctional posterior tooth locking appliance. Background Art

[0002] Traditional orthodontic treatment of posterior teeth lock is usually done by cross-traction of the lock teeth. For example, in the case of positive lock, the upper teeth are subject to palatal traction, and the lower teeth are subject to buccal traction. The horizontal force is what we need for correction, while the vertical force will stretch the correction teeth, causing early contact interference, and even causing the contralateral teeth to open.

[0003] At the same time, teeth that are in the locked position for a long time have no biting function, are elongated and often have periodontal problems. To correct the lock, the force that needs to be applied to the teeth should be positive locking with the upper teeth pressed down to the palate and the lower teeth pressed to the buccal side. In addition, when the locked teeth move, the bite needs to be padded so that they are not affected by the opposing teeth when moving.

[0004] Posterior tooth lock is a common malocclusion, which can occur from the period of deciduous teeth to the period of permanent teeth. According to the buccal and lingual position relationship of the upper and lower posterior teeth, it can be clinically divided into positive lock and negative lock, with positive lock being the most common. Positive lock means that the lingual slope of the lingual tip of the maxillary posterior teeth is located on the buccal side of the buccal slope of the buccal tip of the mandibular posterior teeth, and there is no contact between the occlusal surfaces. Locking can occur on one or both sides of the dentition, and on a single tooth or multiple teeth.

[0005] The existing technology for correcting occlusion is as follows:

[0006] 1) The locked teeth are pulled alternately and a unilateral occlusal pad is worn on the opposite side. The force analysis of the locked teeth is carried out. Taking the positive lock as an example, the upper teeth are subjected to lingual occlusal traction, and the lower teeth are subjected to buccal occlusal traction. The horizontal force is what we need for correction, while the vertical force will stretch the corrected teeth, causing occlusal interference, premature contact, and even cause the opposite side teeth to open. At the same time, teeth that are in the locked position for a long time have no biting function, are elongated, and are often accompanied by periodontal problems. To correct the lock, the force that needs to be applied to the teeth should be the positive lock with the upper teeth pressed down to the palate and the lower teeth to the buccal side.

[0007] 2) Traditional fixed orthodontic appliances combined with unilateral occlusal pads. The occlusal teeth are bonded to the fixed orthodontic appliances, and the nickel-titanium super-elastic wire is used to align the occlusal teeth to establish a normal occlusion. However, this method often causes excessive force on the adjacent teeth, resulting in the loss of adjacent tooth anchorage and movement, and it is also easy for the contralateral teeth to open and bite, destroying the full mouth occlusion.

[0008] Implant anchorage pins are implanted on the palatal or buccal side of the locked teeth for correct locking, and traction buckles are bonded to the locked teeth for traction to correct the locking: This method is limited by the implant anchorage implantation position to avoid the tooth root and the thickness of the alveolar bone. The applied corrective force is often offset and has an angle with the planned tooth movement direction, thereby generating unnecessary component forces. In addition, implant anchorage implantation is an invasive method, which patients sometimes cannot accept. Utility Model Content

[0009] The utility model aims to solve the problems of the prior art by designing an appliance to accurately apply force to the locked teeth, and designing a flat guide (or an oblique guide) in the front teeth area to disengage the locked teeth from the lock knot and at the same time press down and level the lower teeth. In order to achieve the above purpose, the specific scheme of the utility model is as follows:

[0010] A multifunctional posterior teeth locking appliance, comprising a casting crown installed on the molars on both sides, a bracket and a buccal tube are arranged on the outer side of the casting crown, a traction hook is arranged on the inner side of the metal casting crown, a hook part is arranged at the end of the traction hook, the traction hook is L-shaped and a torsion spring is arranged at the joint;

[0011] The cast crowns on both sides are fixedly connected by a connecting rod, the middle part of which is bent toward the incisor, and a plane or bevel guide plate located on the palatal side is fixedly mounted on the connecting rod, and the plane or bevel guide plate covers the palatal side of the central incisor, lateral incisor and canine.

[0012] Furthermore, the casting crown is formed in one piece of metal, the connecting rod is a steel wire and both ends are welded and fixed to the casting crown, and the bracket and the cheek tube are welded and fixed to the outside of the casting crown.

[0013] Furthermore, the plane or inclined guide plate is formed by casting and the connecting rod is wrapped therein.

[0014] Furthermore, the torsion spring is a single-turn torsion spring.

[0015] The advantages of the utility model are:

[0016] 1. Accurate force application: The orthodontic appliance of the utility model is designed with a traction hook with a torsion spring structure, and the position of the traction hook can be adjusted in an individualized manner, thereby improving the correction effect.

[0017] 2. Multifunctional design: The appliance not only has the function of locking teeth correction, but also has a flat guide (or oblique guide) structure, which can simultaneously achieve the purpose of disengaging the locked teeth and lowering and leveling the lower dentition, simplifying the treatment steps and improving the treatment efficiency.

[0018] 3. High comfort: The appliance adopts metal one-piece molding and casting molding technology, with high strength and good stability. At the same time, the appliance adopts non-invasive treatment method to reduce the pain and discomfort of patients.

[0019] 4. Strong adaptability: The braces can be customized according to the patient's specific situation to meet the needs of different age groups and different types of occlusal correction, and have broad application prospects.

[0020] In summary, the multifunctional posterior teeth locking appliance provided by the utility model has the advantages of precise force application, multifunctional design, high comfort and strong adaptability, and can be personalized and optimized according to the different dental needs of different patients; the cast bracket is highly comfortable and oral hygiene maintenance is relatively easy, which provides a new and effective means for locking tooth correction and has important clinical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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.

[0022] Figure 1 A schematic diagram of a multifunctional posterior teeth locking appliance provided by the utility model being worn in the mouth;

[0023] Figure 2 It is a schematic diagram of the utility model multifunctional posterior teeth locking appliance after the plane (or inclined surface) guide plate is hidden;

[0024] Figure 3 The utility model is a diagram showing the overall structure of the multifunctional posterior teeth locking appliance. DETAILED DESCRIPTION

[0025] 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.

[0026] 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.

[0027] Reference Figure 1-3As shown, the utility model provides a multifunctional posterior teeth locking appliance, which includes a metal casting crown 1 installed on the molars on both sides, a bracket 2 and a buccal tube 3 are provided on the outer side of the casting crown 1, a traction hook 4 is provided on the inner side of the metal casting crown 1, and a hook portion is provided at the end of the traction hook 4. The traction hook 4 is L-shaped and has a torsion spring 5 at the joint. The casting crowns 1 on both sides are fixedly connected by a connecting rod 6, the middle part of the connecting rod 6 is bent toward the incisor, and a plane or bevel guide plate 7 located on the palatal side is fixedly installed on the connecting rod 6, and the plane or bevel guide plate 7 covers the palatal side of the central incisor, the lateral incisor and the canine. The casting crown 1 is formed of metal in one piece, the connecting rod 6 is a steel wire and is welded and fixed to the casting crown 1 at both ends, and the bracket 2 and the buccal tube 3 are welded and fixed to the outer side of the casting crown 1.

[0028] The L-shaped structure of the traction hook 4 enables it to provide a stable traction force when needed, while the torsion spring 5 allows the traction hook 4 to move freely within a certain range to adapt to the oral structures and correction needs of different patients. This design not only improves the applicability of the orthodontic appliance, but also reduces the discomfort to the patient's oral cavity during the correction process. When in use, the doctor can adjust the position and angle of the traction hook 4 according to the specific situation of the patient to achieve effective correction of the locked teeth. At the same time, the design of the orthodontic appliance also makes it more convenient for doctors to operate and improves work efficiency.

[0029] The metal one-piece structure of the cast crown 1 ensures the durability of the appliance. At the same time, the welded connecting rod 6, bracket 2, and cheek tube 3 also make the appliance more stable and reliable. The design of the flat or inclined guide plate 7 can effectively guide the movement direction of the teeth and achieve precise correction. The bracket 2 and cheek tube 3 can be installed with an archwire on the outside of the cast crown 1, and the position of the locked teeth can be adjusted by using the force of the archwire.

[0030] In the manufacturing process of the multifunctional posterior teeth locking appliance, the plane or bevel guide plate 7 can be made by casting molding technology, and the connecting rod 6 can be wrapped inside to achieve a stable connection with the cast crown 1. Specifically, the mold is digitally designed and molded according to the patient's oral morphology, and then the connected cast crown 1 and connecting rod 6 are placed in the mold to ensure that the material fully fills every part of the mold, including the position of the connecting rod 6. Next, the material is allowed to solidify in the mold. This process may require a certain amount of time and temperature control to ensure that the material is completely solidified and reaches the required strength. Finally, the molded plane or bevel guide plate 7 is taken out of the mold. At this time, the connecting rod 6 has become one with the guide plate 7 and the connecting rod 6 to form a sturdy and durable appliance structure.

[0031] The use of casting technology to produce a flat or inclined guide plate 7 has the following advantages: first, it can be integrated with the cast crown 1 to improve the overall stability and reliability of the appliance; second, casting can produce complex shapes and structures to meet the accuracy requirements of the appliance; finally, this manufacturing method is relatively simple and low-cost.

[0032] During the use of the appliance, the flat or beveled guide plate 7 plays a key guiding role. It covers the palatal side of the central incisor, lateral incisor and canine, and through its specific shape and angle, it can effectively guide the movement direction of the teeth and achieve precise correction. At the same time, since the guide plate 7 is integrated with the cast crown 1 and the connecting rod 6, its stability and durability are guaranteed, and it can continue to play a role during the correction process.

[0033] By using the casting technology to make the flat or inclined guide plate 7 and wrapping the connecting rod 6 inside, the multifunctional posterior teeth locking appliance of the utility model achieves higher structural stability and correction accuracy. This design not only improves the treatment effect of the appliance, but also reduces the discomfort of the patient, providing a more effective and comfortable treatment option for posterior teeth locking patients.

[0034] In a preferred embodiment, the torsion spring 5 is a single-turn torsion spring 5. This design allows the hooking position of the traction hook 4 to be fine-tuned. The single-turn torsion spring 5 has a smaller volume and more flexible elasticity than the multi-turn torsion spring, so it can better adapt to the oral structure and correction needs of different patients. When in use, the doctor can change the hooking position and traction force of the traction hook 4 by adjusting the tension of the single-turn torsion spring 5 according to the specific situation of the patient. This fine-tuning function makes the orthodontic appliance more personalized, can better adapt to the patient's oral condition, and improve the correction effect. The traction hook 4 with a torsion spring makes itself have a certain elasticity. When adjusting the direction of the traction hook, the torsion spring can absorb a certain force, which is conducive to ensuring the stability of the connection between the root of the traction hook and the cast crown. In addition, the flexible elasticity can also reduce the irritation to the oral mucosa and improve the patient's correction experience.

[0035] The utility model aims to solve the problems of the prior art and provides an innovative orthodontic appliance design, which aims to achieve accurate force application on the locked teeth, so as to achieve better correction effect. In traditional correction methods, the treatment of locked teeth has always been a technical problem. The existence of locked teeth not only affects the overall arrangement of teeth, but also may cause abnormal tooth function. Therefore, it is particularly important to design an orthodontic appliance that can accurately apply force to the locked teeth and effectively adjust their position.

[0036] The utility model can exert horizontal and root forces on the locking teeth by precisely controlling the design of the orthodontic appliance, thereby achieving precise movement of the teeth. This design can not only effectively incorporate the locking teeth into the dental arch for alignment, but also maintain the stability and comfort of the teeth during the correction process. In order to achieve a more personalized correction effect, the utility model introduces a traction hook design with a torsion spring. This design allows the position of the traction hook to be personalized according to the correction needs, thereby meeting the specific needs of different patients. This flexibility makes the correction process more accurate and efficient, while also improving the comfort of the patient. In addition, the utility model also designs a flat guide (or oblique guide) in the anterior tooth area to further assist in the correction of the locking teeth. This design can disengage the locking teeth from the lock knot, while pressing down and leveling the lower dentition, thereby achieving a better tooth arrangement effect. This comprehensive design makes the correction process more comprehensive and systematic, and can effectively solve the problems caused by the locking teeth.

[0037] 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 multifunctional posterior teeth locking appliance, characterized in that: The multifunctional posterior teeth locking appliance comprises a casting crown (1) installed on the molars on both sides, a bracket (2) and a cheek tube (3) are arranged on the outer side of the casting crown (1), a traction hook (4) is arranged on the inner side of the metal casting crown (1), and a hook part is arranged at the end of the traction hook (4), the traction hook (4) is L-shaped and a torsion spring (5) is arranged at the joint; The casting crowns (1) on both sides are fixedly connected by a connecting rod (6), the middle part of the connecting rod (6) is bent toward the incisor, and a plane or inclined guide plate (7) located on the palate side is fixedly installed on the connecting rod (6), and the plane or inclined guide plate (7) covers the palate side of the central incisor, the lateral incisor and the canine.

2. A multifunctional posterior teeth occlusal appliance according to claim 1, characterized in that: The casting crown (1) is integrally formed of metal, the connecting rod (6) is a steel wire and both ends are welded and fixed to the casting crown (1), and the bracket (2) and the cheek tube (3) are welded and fixed to the outside of the casting crown (1).

3. The multifunctional posterior teeth occlusal appliance according to claim 1, characterized in that: The flat or inclined guide plate (7) is cast and wraps the connecting rod (6) therein.

4. The multifunctional posterior teeth occlusal appliance according to claim 1, characterized in that: The torsion spring (5) is a single-turn torsion spring (5).

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