Correcting device for adduction of anterior teeth

Abstract

The orthodontic device for adduction of anterior teeth comprises a plurality of orthodontic brackets, a personalized tunnel arch, a traction device, a bone anchorage, a force application device, an adduction scale and an occlusal pad, wherein the orthodontic bracket is fixed on a specific tooth, the personalized tunnel arch is connected through the traction device and transmits an acting force, the bone anchorage is arranged at the rear part of the dental arch to provide a fixing point, the force application device is connected with the traction device and the bone anchorage, and the adduction scale is used for marking an adduction distance. And the occlusal pad is arranged on the teeth in the back tooth area to adjust the occlusal height. The utility model effectively solves the problems in the prior art that the time for closing the tooth extraction space is long, the treatment process is complicated and the efficiency is low.

Description

Technical Field

[0001] The utility model belongs to the field of orthodontics, and particularly relates to a correction device for retracting anterior teeth. Background Art

[0002] In the prior art, overall retraction of anterior teeth is mainly applicable to cases that require orthodontic treatment after tooth extraction. In traditional fixed orthodontic treatment, the extraction space is usually closed after the dentition is aligned and leveled, which is a time-consuming process. Similarly, in invisible orthodontic technology, similar problems are also faced. Usually, the teeth need to be moved distally first, then aligned and leveled, and then the extraction space is closed. These steps prolong the treatment time, and the efficiency of closing the extraction space is low both in fixed orthodontic treatment and invisible orthodontics. The main reason is that the alignment and leveling stage takes a lot of time, and during this period, the alveolar bone in the extraction area may have formed a normal bone structure, resulting in increased difficulty and time for subsequent closing of the extraction space. At the same time, existing research shows that if there is no external force after tooth extraction, the teeth at the distal end of the extraction space will naturally move mesially every year, which is called physiological anchorage loss, further affecting the closing speed of the extraction space. Since the alveolar bone is plastic, the movement of teeth is accompanied by the processes of bone resorption and bone reconstruction, and the activities of osteoblasts and osteoclasts increase significantly during orthodontic treatment. The same phenomenon of enhanced cell activity also occurs in the trauma area after tooth extraction, thus accelerating the bone remodeling process. Based on this principle, in recent years, some new technologies, such as bone microperforation technology, have also been used to accelerate the closing of the extraction space. However, these technologies still cannot completely solve the low efficiency problem of the prior art in the process of retracting anterior teeth. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a correction device for retracting anterior teeth, effectively solving the problems of long time for closing the extraction space, complex treatment process and low efficiency in the prior art.

[0004] The technical solution adopted by the utility model to solve the above problems is as follows:

[0005] A correction device for retracting anterior teeth includes a plurality of orthodontic brackets, a personalized tunneling arch, a traction device, a bone anchorage, a force application device, an amount-of-retraction scale, and a bite pad;

[0006] Among them, the orthodontic brackets are fixed on specific teeth, the personalized tunneling arch is connected through the traction device and transmits the acting force, the bone anchorage is arranged at the rear of the dental arch to provide a fixed point, the force application device is connected to the traction device and the bone anchorage, the amount-of-retraction scale is used to mark the retraction distance, and the bite pad is arranged on the teeth in the posterior tooth area to adjust the bite height.

[0007] Preferably, the orthodontic bracket includes brackets installed on multiple maxillary anterior teeth and individual posterior teeth. Each bracket includes a base plate, a fixed slot groove, and an installation wing. The base plate is fixedly connected to the tooth surface through an adhesive material. The fixed slot groove is used to accommodate the personalized tunneling arch, and the installation wing is used to assist in fixing the arch wire.

[0008] Preferably, the personalized tunneling arch includes a front rectangular structure and a rear cylindrical structure. The width and height of the front rectangular structure match the slot groove of the orthodontic bracket. The diameter of the rear cylindrical structure is smaller than the narrow width of the front rectangular structure. The personalized tunneling arch is made of stainless steel material and has a highly polished surface to reduce friction.

[0009] Preferably, the traction device includes a fixed hook located on the distal side of the canine bracket. The hook is connected to the personalized tunneling arch, and the anterior teeth are moved backward through the traction force. The traction device is made of stainless steel material and has an anti-corrosion treatment.

[0010] Preferably, the bone anchorage includes a titanium alloy screw. The titanium alloy screw is implanted into the alveolar bone of the patient through a surgical operation. The bone anchorage has a threaded structure with a diameter of 1.5 mm to 2.5 mm. The screw head is provided with a hole for fixing the traction device or the force application device, and the hole is used to fix the rubber chain or the pull spring.

[0011] Preferably, the force application device includes an orthodontic rubber chain, a nickel-titanium pull spring, and a traction rubber band fixed between the traction device and the bone anchorage. The orthodontic rubber chain is made of an elastic polyurethane material, and the nickel-titanium pull spring is wound from a nickel-titanium alloy wire with a diameter of 0.5 mm.

[0012] Preferably, the retraction amount marker is fixedly connected to the personalized tunneling arch and includes a resin-made sphere or a metal blocking tube. The retraction amount marker is fixed at the distal position of the extraction space.

[0013] Preferably, the occlusal pad includes a pad made of orthodontic blue glue or glass ionomer adhesive material. The occlusal pad is bonded to the occlusal surface of the posterior teeth where no bracket is installed. The thickness of the occlusal pad is proportional to the amount of occlusal opening in the anterior tooth area, and its thickness range is 2 mm to 5 mm.

[0014] The structure of the present utility model is novel, ingeniously conceived, and simple and convenient to operate. Compared with the prior art, it has the following advantages:

[0015] Fast and efficient retraction effect: Through the cooperation of the personalized tunneling arch and the traction device, the applied force can be more evenly distributed in the anterior tooth area, avoiding the lengthy operation in the alignment and leveling process in traditional orthodontics, greatly shortening the closing time of the extraction space, and effectively improving the overall efficiency of retracting the anterior teeth.

[0016] Enhanced stability and precision: The bone anchorage design provides a solid fixation point, and in conjunction with the force-applying device, it enables precise control of force transmission, reduces the risk of loss of physiological anchorage, ensures stability during retraction, and ensures that the direction and force of tooth movement are more controllable.

[0017] Accurate marking of the amount of retraction: The setting of the retraction amount mark, which marks the retraction amount through resin balls or metal blocking tubes, accurately records the movement distance of the teeth, allowing doctors to adjust the mechanical parameters in real time during the treatment process, ensuring more accurate treatment effects and reducing excessive or insufficient retraction.

[0018] Improved comfort and easy operation: The addition of the bite pad not only adjusts the bite height, avoiding discomfort caused by occlusal disharmony during treatment, but also reduces excessive pressure on the posterior teeth, ensuring patient comfort during treatment. Furthermore, the overall device is simple in design and easy to operate, greatly simplifying the orthodontic treatment process and improving the doctor's operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the occlusal surface structure of an embodiment of the present utility model.

[0020] Figure 2 It is a schematic diagram of the lip and cheek surface of an embodiment of the present utility model.

[0021] Figure 3 It is a schematic diagram of the occlusal surface structure of the personalized tunnel arch of the present invention.

[0022] Figure 4 It is a schematic diagram of the personalized tunnel arch lip and cheek structure of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the bite pad of the present utility model.

[0024] Attached photos

[0025] 1 - Orthodontic brackets, fixed to the surfaces of the maxillary anterior teeth and some posterior teeth, used to connect to a personalized tunnel arch.

[0026] 2 - Customized tunnel arches, located in the grooves of orthodontic brackets, transmit the force exerted by the distraction device to help retract the anterior teeth.

[0027] 3 - Traction device, installed distal to the canine bracket in the anterior area, used to connect the customized tunnel arch and force device to provide posterior traction.

[0028] 4 - Bone anchorage, located at the back of the dental arch and positioned by CBCT, is used to provide a stable fixation point to prevent loss of physiological anchorage of the teeth.

[0029] 5 - Force application device, including orthodontic elastic chain, constant-force nickel-titanium pulling spring, traction rubber ring, etc., used to apply a constant traction force to retract the anterior teeth.

[0030] 6 - Retraction amount marker, located distally to the extraction space, made of resin ball or metal stop tube, used to mark the retraction amount and ensure the retraction accuracy of the anterior teeth.

[0031] 7 - Occlusal pad, set on the occlusal surface of the posterior teeth without bonded orthodontic brackets, to ensure comfort and orthodontic effect during treatment by adjusting the occlusal height. Specific implementation manner

[0032] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0033] As Figure 1-5 shown, the present invention provides a correction device for retracting anterior teeth, including a plurality of orthodontic brackets 1, personalized tunneling arch 2, traction device 3, bone anchorage 4, force application device 5, retraction amount marker 6, and occlusal pad 7. The orthodontic brackets 1 are fixed on the surfaces of the anterior teeth and some posterior teeth of the upper jaw through an adhesive material. The orthodontic brackets 1 include a base plate, a fixed groove, and an installation wing. The base plate is fixedly connected to the tooth surface through an adhesive material, and the fixed groove is used to accommodate the personalized tunneling arch 2. The personalized tunneling arch 2 is bent from a stainless nickel-titanium alloy wire with a size matching the groove of the orthodontic bracket 1. The front part is a rectangular structure matching the orthodontic bracket 1, and the rear part is a highly polished cylindrical structure with a diameter smaller than the length of the narrowest surface of the front rectangular structure. The traction device 3 is installed at the distal end of the canine bracket in the anterior tooth area, used to provide the traction force for the anterior teeth. The traction device is connected to the bone anchorage 4 through the force application device 5. The force application device 5 includes an orthodontic elastic chain, a constant-force nickel-titanium pulling spring, and an orthodontic traction rubber ring, etc., to apply a constant force to retract the anterior teeth. The bone anchorage 4 is installed at the rear of the dental arch and is fixed by CBCT positioning. The retraction amount marker 6 is located distally to the extraction space, made of resin ball or metal stop tube, used to accurately indicate the retraction amount of the anterior teeth and ensure the accuracy and efficiency of treatment. The occlusal pad 7 is bonded to the occlusal surface of the posterior teeth without installed orthodontic brackets to ensure the normal occlusion of the upper and lower teeth during orthodontic treatment by adjusting the occlusal height.

[0034] The orthodontic bracket 1 includes a plurality of brackets mounted on the maxillary anterior teeth and individual posterior teeth. Each bracket consists of a base plate, a fixed slot groove, and mounting wings. The base plate is firmly fixed to the tooth surface through an adhesive material to ensure that the bracket will not fall off or shift during orthodontic treatment. The base plate is made of a material with good biocompatibility, which can not only ensure its stability in the oral environment but also prevent adverse reactions to the teeth and oral tissues. The fixed slot groove is used to accommodate the personalized tunnel arch 2, which is bent from stainless steel and has dimensions that perfectly match the slot groove of the orthodontic bracket to ensure a tight fit between the tunnel arch and the bracket. By bending the tunnel arch, effective traction and retraction of the anterior teeth can be achieved, ensuring accurate force transmission during the treatment process. The mounting wings are located on both sides of the bracket and are used to assist in fixing the arch wire. The design of the mounting wings enables the arch wire to be stable in the bracket during the application of force and prevents the arch wire from shifting during orthodontic treatment. The shape and position of the mounting wings are carefully designed to ensure convenient installation and removal of the arch wire while not affecting the normal occlusion function of the oral cavity, further improving the comfort and efficiency of orthodontic treatment.

[0035] The described personalized tunnel arch 2 includes a front rectangular structure and a rear cylindrical structure. The width and height of the front rectangular structure are precisely designed to match the slot groove dimensions of the orthodontic bracket 1, ensuring that the tunnel arch can slide stably in the slot groove and achieve efficient force transmission. The diameter of the rear cylindrical structure is smaller than the narrow width of the front rectangular structure. This design can reduce the friction generated during bending and traction, enhancing the flexibility of the tunnel arch in the dental arch. The personalized tunnel arch 2 is made of high-quality stainless steel material, which has good mechanical properties to ensure that it will not deform or break during use. At the same time, it also has excellent biocompatibility and will not cause irritation to the oral soft tissues. The surface of the tunnel arch is highly polished, and the polished smooth surface can effectively reduce the friction of the tunnel arch in the slot groove of the orthodontic bracket, making the arch wire move more smoothly during tooth movement, thereby improving the efficiency and accuracy of anterior tooth retraction.

[0036] The traction device 3 includes a fixed hook located on the distal side of the canine bracket. The hook is precisely installed on the distal side of the canine bracket to ensure that the traction force can be effectively transmitted to the anterior tooth area. The hook is connected to the personalized tunnel arch 2, and the anterior teeth are moved backward through the traction force to efficiently close the extraction space. The traction device 3 is made of high-strength stainless steel material, which not only has good durability and stability but also undergoes special anti-corrosion treatment to adapt to the high humidity and acid-base conditions in the oral environment, ensuring that it will not rust or deteriorate during long-term wear, thus guaranteeing the long-term use and effectiveness of the device.

[0037] The bone support 4 includes a titanium alloy screw, which is precisely implanted into the patient's alveolar bone through surgery to provide a stable support effect. The screw portion of the bone support 4 adopts a threaded structure with a diameter of 1.5mm to 2.5mm to ensure that the screw has good fixation and biocompatibility in the alveolar bone, while being able to withstand the applied traction or other external forces. The head of the screw is provided with a hole for fixing the traction device 3 or the force-applying device 5. The design of the hole is adapted to the fixation requirements of various orthodontic devices, and can firmly connect rubber chains, tension springs or other force-applying devices to ensure that the force applied during the treatment is accurate and stable, thereby improving the treatment effect and reducing displacement or failure caused by insufficient support.

[0038] The force-applying device 5 includes an orthodontic rubber chain, a nickel-titanium tension spring, and a traction rubber band fixed between the traction device 3 and the bone anchorage 4. The orthodontic rubber chain is made of a highly elastic polyurethane material and has excellent tensile strength, and can continuously provide stable traction during tooth movement. The nickel-titanium tension spring is made of a nickel-titanium alloy wire with a diameter of 0.5 mm through precision winding. It has superelasticity and shape memory effects, and can effectively move teeth when a gentle and continuous force is applied, while reducing the patient's discomfort. The traction rubber band is used to adjust the direction and intensity of the force, ensure accurate mechanical transmission throughout the orthodontic process, promote the posterior retraction of the front teeth, and achieve an overall orthodontic effect.

[0039] The retraction marker 6, which consists of a resin ball or a metal barrier tube, is fixedly connected to the personalized tunnel arch 2. It indicates the distance of tooth retraction, ensuring precise control of the retraction process. The retraction marker 6 is fixed distally to the extraction space. This structural design allows the doctor to monitor the progress of tooth retraction in real time during the orthodontic process, preventing over- or under-retraction and ensuring the accuracy and stability of orthodontic treatment.

[0040] The bite pad 7 comprises a pad made of orthodontic blue glue or glass ionomer bonding material. The bite pad 7 is bonded to the occlusal surface of the posterior teeth, where brackets are not installed, to adjust the occlusal height of the anterior teeth. The thickness of the bite pad 7 is directly proportional to the amount of occlusal opening in the anterior area, ranging from 2mm to 5mm. This effectively prevents unstable tooth position caused by premature contact of the posterior teeth during orthodontic treatment, while ensuring smooth anterior tooth retraction. The design of the bite pad 7 further enhances the patient's bite comfort and treatment effectiveness during the overall anterior tooth retraction process.

[0041] When using this device, ① first make an orthodontic model to ensure that all parts of the model are clear, so as to facilitate the precise execution of subsequent operations. ② Measure and calculate the amount of space required to align and level the teeth, including the crowding of the anterior and posterior areas, and calculate the amount of arch expansion. ③ Select one group of teeth from the left and right first molars, left and right second molars, and left and right first premolars as the track teeth for retracting the anterior teeth, or select a mixed group of teeth, ensuring that one tooth is selected from the upper, lower, left, and right sides as the track teeth to provide a stable support point. ④ Use water-soluble glue to bond the straight wire orthodontic brackets corresponding to the track teeth to the plaster model according to standard requirements, ensuring that the bracket bonding position is accurate for subsequent arch wire fixation. ⑤ Select the appropriate orthodontic stainless steel square wire according to the size of the bracket, bend a personalized tunnel arch, and process the back of the tunnel arch and the traction device to ensure the matching of the tunnel arch and the orthodontic bracket and the connection of the traction device. ⑥ Fix the retraction scale at the distal position of the extraction gap to ensure that the distance between the retraction scale and the mesial surface of the posterior bracket near the extraction gap is equal to the extraction gap plus the expandable arch minus the gap required to align and level the teeth, to ensure the accuracy of the retraction. ⑦ After completing the above steps, make an indirect bonding template for the bracket to ensure the accuracy and convenience of the subsequent bonding of the bracket. ⑧ Before bonding the bracket, perform routine tooth surface treatment, and use the indirect bonding template for the bracket to bond the straight wire orthodontic bracket to the tooth surface. At the same time, make an occlusal pad on the occlusal surface of the posterior teeth where the bracket is not bonded to adjust the occlusal height, and implant bone anchorage to provide stable support for subsequent traction. ⑨ Use a force-applying device to connect the traction device to the bone anchorage, and gradually achieve the overall retraction of the anterior teeth by applying external force. ⑩ When performing overall inward retraction of the anterior teeth, it is necessary to reserve the space required for the teeth to be aligned and leveled. After the overall inward retraction of the anterior teeth reaches the target position, the teeth can be aligned and leveled to ensure the final effect of orthodontic treatment.

[0042] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art may make various modifications, additions, or substitute similar methods to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. An orthodontic device for retracting anterior teeth, characterized in that, It includes multiple orthodontic brackets (1), a personalized tunneling arch (2), a traction device (3), a bone anchorage (4), a force application device (5), an en masse retraction marker (6), and a bite block (7). Among them, the orthodontic brackets (1) are fixed on specific teeth. The personalized tunneling arch (2) is connected through the traction device (3) to transmit the acting force. The bone anchorage (4) is arranged at the rear part of the dental arch to provide a fixed point. The force application device (5) is connected to the traction device (3) and the bone anchorage (4). The en masse retraction marker (6) is used to mark the retraction distance. The bite block (7) is arranged on the teeth in the posterior tooth area to adjust the occlusal height.

2. The orthodontic device for retracting anterior teeth according to claim 1, characterized in that: The orthodontic brackets (1) include multiple brackets installed on the maxillary anterior teeth and individual posterior teeth. Each bracket includes a base plate, a fixed slot groove, and an installation wing. The base plate is fixedly connected to the tooth surface through an adhesive material. The fixed slot groove is used to accommodate the personalized tunneling arch (2), and the installation wing is used to assist in the fixation of the arch wire.

3. The orthodontic device for retracting anterior teeth according to claim 1, characterized in that: The described personalized tunneling arch (2) includes a front rectangular structure and a rear cylindrical structure. The width and height of the front rectangular structure match the slot groove of the orthodontic bracket (1). The diameter of the rear cylindrical structure is smaller than the narrow surface width of the front rectangular structure. The personalized tunneling arch (2) is made of stainless steel material and has a highly polished surface to reduce friction.

4. The orthodontic device for adducting anterior teeth according to claim 1, characterized in that: The traction device (3) includes a fixed hook located on the distal side of the canine bracket. The hook is connected to the personalized tunneling arch (2) to move the anterior teeth backward through the traction force. The traction device (3) is made of stainless steel material and has an anti-corrosion treatment.

5. A correction device for anterior tooth retraction according to claim 1, characterized in that: The bone anchorage (4) includes a titanium alloy screw. The titanium alloy screw is implanted into the alveolar bone of the patient through surgery. The bone anchorage (4) has a threaded structure with a diameter of 1.5 mm to 2.5 mm. The screw head is provided with a hole for fixing the traction device (3) or the force application device (5). The hole is used to fix the rubber chain or the pull spring.

6. The orthodontic device for retracting anterior teeth according to claim 1, wherein: The force application device (5) includes an orthodontic rubber chain, a nickel-titanium pull spring, and a traction rubber band fixed between the traction device (3) and the bone anchorage (4). The orthodontic rubber chain is made of an elastic polyurethane material. The nickel-titanium pull spring is wound by a nickel-titanium alloy wire with a diameter of 0.5 mm.

7. The orthodontic device for retracting anterior teeth according to claim 1, wherein: The en masse retraction marker (6) is fixedly connected to the personalized tunneling arch (2) and includes a resin-made ball or a metal blocking tube. The en masse retraction marker (6) is fixed at the distal position of the extraction space.

8. The orthodontic device for retracting anterior teeth according to claim 1, characterized in that: The bite block (7) includes a pad made of orthodontic blue glue or glass ionomer adhesive material. The bite block (7) is bonded to the occlusal surface of the posterior teeth without brackets. The thickness of the bite block (7) is directly proportional to the amount of occlusal opening in the anterior tooth area, and its thickness range is 2 mm to 5 mm.

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