Device for integrally closing scattered gap of anterior teeth

Abstract

A device for integrally closing front teeth scattered in a gap comprises a retention and connection device which integrally wraps all teeth in a dentition and is made of an orthodontic pressed film retainer high polymer material; the traction devices are located at the adjacent gaps of the lip and buccal surfaces of the front molar areas or molar areas on the two sides and are arranged in a bilateral symmetry mode, and the upper edges of the traction devices are flush with the junctions of the crown middle 1 / 3 and the crown neck 1 / 3 of the lip and buccal sides of the teeth; the lingual vacuoles are located on the lingual sides of the teeth of the patient, the height of the inner walls of the lingual vacuoles is consistent with the sagittal height of the teeth, and the shape of the inner walls of the lingual vacuoles is completely matched with the shape of the lingual sides of the teeth; the force application device is an elastic body part and is made of one of an elastic rubber ring, a rubber chain or a rubber line; the positioning window is a horizontal groove-shaped window formed in the fixing and connecting device and penetrates through the traction devices on the left side and the right side. According to the utility model, the problems of low correction efficiency, long treatment period, discomfort of a patient in wearing and high treatment cost in the prior art are effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of medical apparatus and instruments, and particularly relates to a device for closing scattered gaps of front teeth as a whole. BACKGROUND

[0002] At present, for the treatment demand of scattered gaps of front teeth, the commonly used treatment means in clinic mainly includes two modes of fixed appliance and invisible active appliance. The fixed appliance uses adhesive support and steel wire to force the teeth to move to the target position as a whole. This kind of device can provide strong anchorage and stability in the treatment process, and is suitable for complex treatment. However, it has the following disadvantages: firstly, the fixed appliance needs to be worn for a long time, which affects the oral hygiene of the patient and easily causes problems such as gingivitis and dental caries; secondly, its appearance is obvious, which affects the aesthetic demand of the patient, especially in adults who have high demand for appearance, and the acceptance is low; in addition, the operation of the fixed appliance is complex, which needs to be adjusted many times, increasing the treatment time and the economic burden of the patient.

[0003] The invisible active appliance is made of transparent high polymer material, and the treatment is completed by the patient wearing and replacing the appliance. It has a hidden effect in appearance, and can be taken off and worn, which significantly improves the wearing comfort and oral hygiene of the patient. However, the existing invisible active appliance also has the following disadvantages: the traditional design adopts a segmented treatment mode, that is, the force and movement of single tooth are performed respectively, and this segmented design has low overall treatment efficiency and effect, which easily leads to prolonged treatment period. In addition, the invisible active appliance needs to be replaced many times, which also makes the cost of the treatment process high, and it is difficult to meet the demand of the patient for high cost-effective treatment scheme.

[0004] In summary, the existing technology still has obvious deficiencies in the efficiency of invisible treatment, treatment period and patient experience, and there is an urgent need for a device that can close the scattered gaps of front teeth as a whole, which can realize efficient treatment and reduce treatment cost through optimized design, and improve the comfort and acceptance of the patient. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a device for closing scattered gaps of front teeth as a whole in view of the deficiency of prior art, which effectively solves the problems of low treatment efficiency, long treatment period, patient discomfort and high treatment cost in the prior art.

[0006] To solve the above problems, the technical scheme adopted by the utility model is:

[0007] A device for closing scattered gaps of front teeth as a whole, comprising:

[0008] The retention and connection device is made of orthodontic vacuum-formed retainer polymer material, and provides the fixing and connecting functions of the invisible device.

[0009] The traction device is symmetrically arranged at the interproximal space of the labial buccal surface of the bilateral premolar area or molar area, the upper edge of the traction device is flush with the junction of the labial buccal surface crown 1 / 3 and the crown neck 1 / 3 of the tooth, and the traction device is used for applying the correction force to the tooth of the patient.

[0010] The lingual cavity is located on the lingual side of the tooth of the patient, the inner wall height of the lingual cavity is consistent with the sagittal height of the tooth, the inner wall shape of the lingual cavity is completely matched with the shape of the lingual side of the tooth, and the lingual cavity is used for providing the track and moving space of the tooth movement.

[0011] The force applying device is a resilient member, is made of one of an elastic rubber ring, a rubber chain or a rubber wire, and has a single force value of not more than 3.5 ounces, and the two ends of the force applying device are connected with the traction devices respectively, and the force applying device is used for applying the uniform correction force.

[0012] The positioning window is a horizontal slot-shaped window arranged on the retention and connection device, penetrates through the left and right traction devices, and is used for the positioning and passing of the force applying device.

[0013] Preferably, the traction device is arranged at the central part of the interproximal space of each tooth row, the two ends of the traction device are in close contact with the labial buccal surfaces of the adjacent two teeth, and are fixed by bonding or buckling, and the traction device is used for transmitting the correction force.

[0014] Preferably, the lingual cavity is processed on a tooth row plaster positive model according to the shape of the lingual side of the moved tooth, the inner wall of the lingual cavity is consistent with the shape of the lingual side of the moved tooth, the inner wall height is equal to the sagittal height of the moved tooth, and the lingual cavity is used for providing the track and space of the tooth movement.

[0015] Preferably, the force applying device has an elastic value of 70 grams, and the force applying device passes through the retention and connection device through the positioning window to apply the correction force.

[0016] Preferably, the positioning window is a horizontal slot-shaped structure penetrating through the retention and connection device, has a width of 2-4 mm and a height of 1.5-2.5 mm, and is used for the positioning and passing of the force applying device.

[0017] Preferably, the orthodontic vacuum-formed retainer polymer material comprises one or a combination of polyester (PETG), polycarbonate (PC) or polyurethane (PU).

[0018] The utility model discloses the following advantages compared with the prior art:

[0019] 1. Achieve efficient overall movement of anterior teeth: The device provides precise tracks and force application paths for the overall movement of anterior teeth through the cooperation of the lingual bubble and the force application device, avoiding the inefficiency caused by the segmented force of traditional invisible aligners. The traction device evenly transmits the correction force to the target teeth through reasonable layout, effectively shortens the treatment period and improves the correction efficiency.

[0020] 2. Comfortable and invisible: The retention and connection device is made of orthodontic pressure membrane holder high molecular material, which wraps the whole dentition and keeps transparent, without affecting the daily aesthetic needs of patients. The device design conforms to the characteristics of oral biomechanics, with no sharp edges, reducing the irritation to the gums and oral soft tissues, and improving the wearing comfort of patients.

[0021] 3. Stable structure and convenient operation: The design of the positioning window runs through the retention and connection device, providing precise force application positioning, making the installation and replacement of the force application device more convenient, and ensuring the stability of the device during the treatment process. The traction device is fixed by adhesion or buckle, which is simple and reliable, suitable for patients to use and maintain themselves, reducing the frequency of professional adjustment and reducing the treatment cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a structural schematic view (front view) of an embodiment of the present utility model;

[0023] Fig. 2 is a structural schematic view (front view) of an embodiment of the present utility model;

[0024] Fig. 3 is a structural schematic view (front view) of an embodiment of the present utility model;

[0025] Fig. 4 is a basic principle diagram of an embodiment of the present utility model;

[0026] In the drawings: 1 - retention and connection device, 2 - traction device, 3 - lingual bubble, 4 - force application device, 5 - positioning window, 6 - teeth to be moved. DETAILED DESCRIPTION

[0027] The following is a specific embodiment of the present utility model, and the technical scheme of the present utility model is further described in combination with the drawings, but the present utility model is not limited to these embodiments.

[0028] As Figs. 1 to 4As shown, the utility model provides a device for closing the scattered gap of anterior teeth as a whole, mainly including retaining and connecting device 1, traction device 2, lingual cavity 3, force application device 4 and positioning window 5. Retaining and connecting device 1 is made of medical grade orthodontic film holder high polymer material, the device wraps the patient's dentition as a whole, ensures that the device is closely attached to the dentition, thereby realizing the effects of invisibility, beauty and stability. Retaining and connecting device 1 not only can provide anchorage, but also provides basic support for the installation and function of other components through the design of covering the dentition.

[0029] Traction device 2 is symmetrically arranged in the premolar area or molar area of the dentition on both sides, and the specific position is selected at the central part of the interproximal gap. The upper edge of the traction device is flush with the junction of the crown 1 / 3 and the crown neck 1 / 3 of the labial and buccal side of the tooth. Traction device 2 contacts the labial and buccal side of the adjacent two teeth and is fixed by bonding or buckling, which not only ensures the stable transmission of the correction force, but also facilitates the installation and removal of the device. Traction device 2 provides a fixed point for force application device 4, which is used to uniformly distribute the correction force to the target teeth.

[0030] Lingual cavity 3 is arranged on the lingual side of the tooth 6 to be moved, and its shape is completely matched with the anatomical structure of the lingual side of the tooth. The inner wall height of lingual cavity 3 is consistent with the sagittal height of the tooth. Lingual cavity 3 is processed on the dentition plaster positive model according to the shape of the tooth 6 to be moved, which ensures that its shape is completely matched with the characteristics of the patient's oral cavity. Lingual cavity 3 provides a precise track for tooth movement and provides the necessary movement space during tooth movement, avoiding the decrease of correction efficiency caused by insufficient space.

[0031] Force application device 4 is made of one of elastic rubber ring, rubber chain or rubber wire, and its single force value is 50-80 grams. The two ends of force application device 4 are connected to the left and right traction devices 2 respectively. Force application device 4 transmits the correction force through positioning window 5, and its elastic design can reduce the discomfort of the patient while ensuring the correction effect.

[0032] Positioning window 5 is arranged at the horizontal position of retaining and connecting device 1 and penetrates through the left and right traction devices 2. Force application device 4 realizes precise positioning through positioning window 5, thereby ensuring that the correction force can accurately act on the tooth 6 to be moved. Through the cooperation of each component, the device can close the scattered gap of anterior teeth as a whole, shorten the treatment period, improve the correction efficiency, and improve the patient's wearing experience.

[0033] The traction device 2 is arranged at the central part of the interproximal space of each side of the dentition, and the upper edge position is flush with the junction of the coronal 1 / 3 and the coronal neck 1 / 3 of the labial and buccal side of the tooth, ensuring that the orthodontic force can be transmitted to the moved tooth in the correct direction. The two ends of the traction device 2 are in close contact with the labial and buccal sides of the adjacent two teeth, and are fixed by bonding or buckling. This fixing method not only enhances the stability of the device, but also simplifies the installation and removal process, making it convenient for patients or doctors to perform daily inspection and adjustment.

[0034] In order to better adapt to the oral structure of different patients, the shape of the traction device 2 is designed considering the size of the interproximal space and the curvature of the adjacent labial and buccal sides of the teeth, which can accurately fit the tooth surface, thereby reducing the possibility of device loosening. At the same time, the traction device 2 is made of materials with certain flexibility and biocompatibility, such as medical-grade high polymer plastics or composite materials, which not only reduces the foreign body sensation of the patient when wearing, but also improves the durability of the device during the treatment process.

[0035] The traction device 2 provides a fixed point for the force application device 4, ensuring that the force application device 4 can uniformly apply orthodontic force within a constant force range. This design allows the orthodontic force to be efficiently transmitted to the moved teeth 6, while avoiding the low efficiency problem caused by force dispersion in traditional segmented treatment. Through the cooperation of the traction device 2 and other components, the treatment process is more accurate and efficient.

[0036] The lingual cavity 3 is arranged on the lingual side of the moved tooth, and its processing and manufacturing are completed through the dentition plaster positive mold. Specifically, according to the anatomical morphology of the lingual side of the moved tooth, the inner wall of the lingual cavity 3 is accurately designed and processed on the dentition plaster positive mold, so that its shape completely matches the shape of the lingual side of the moved tooth, and the inner wall height is consistent with the sagittal height of the moved tooth, thereby ensuring that the lingual cavity 3 can provide a precise moving track for the tooth.

[0037] The design of the lingual cavity 3 aims to solve the problem of low treatment efficiency caused by unclear trajectory or insufficient space in traditional treatment devices. Through the close-fitting morphology structure, the lingual cavity 3 not only guides the overall moving direction of the tooth, but also effectively avoids the deviation or rotation of the tooth during the moving process. In addition, the internal space of the lingual cavity 3 is reserved sufficiently, which not only ensures the biomechanical space required for tooth movement, but also avoids the problem of compression of periodontal tissue caused by device restriction.

[0038] To further improve patient comfort and device durability, the lingual bubble 3 is usually made of flexible polymer materials or composite materials, which have good biocompatibility and wear resistance, reducing the irritation to the tongue while ensuring functionality. The integration of the lingual bubble 3 with the retention and connection device 1 makes the device more stable as a whole and provides reliable support for other components. Through the precise track function of the lingual bubble 3, the moved teeth can be efficiently moved along the preset trajectory, thereby shortening the treatment period and improving the correction effect.

[0039] The force application device 4 is the key component of the device that provides the correction force. It is designed based on elastomeric materials and is made of one of the elastic rubber rings, rubber chains or rubber lines, which can continuously apply constant and uniform tension during the correction process. The elastic value of the force application device 4 is 70 grams, and the specific force value can be adjusted according to the patient's tooth correction needs and biomechanical properties to ensure that the correction force can meet the needs and not cause discomfort or damage to the teeth and surrounding tissues.

[0040] The force application device 4 penetrates the retention and connection device 1 through the positioning window 5 and connects the left and right traction devices 2, forming a closed force application circuit. The design of the positioning window 5 ensures that the force application device 4 can apply force in a fixed direction and path, effectively avoiding the problem of uneven correction force caused by the deviation of the force direction during the force application process. In addition, the elastic properties of the force application device 4 can adapt to small mechanical changes during tooth movement, maintaining the stability and continuity of the correction force.

[0041] The two ends of the force application device 4 are connected to the traction device 2 through hooks or ring buckles, which are easy to install and remove, and patients can replace the force application device according to the doctor's guidance during daily wear. This design improves the practicality of the device and the convenience of operation, reduces the frequency of patient visits, and reduces treatment costs. The flexible material of the force application device 4 can also reduce the discomfort of the patient during wear, improving the experience during the correction process.

[0042] Through the cooperation of the force application device 4, the positioning window 5 and the traction device 2, the correction force can be accurately transmitted to the moved teeth 6, achieving the overall closure of the scattered gaps of the anterior teeth, while shortening the treatment period and improving the correction efficiency. The design of the force application device 4 is simple and efficient, providing core technical support for the realization of the entire device.

[0043] The positioning window 5 is designed as a horizontal slot structure that penetrates the retention and connection device 1, and its main function is to provide precise channels and positioning support for the force application device 4. The width of the positioning window 5 is designed to be between 2-4 millimeters, and the height range is 1.5-2.5 millimeters. This size range can adapt to different specifications of the force application device 4, while ensuring that the force application device remains stable during the process and does not slip or misalign.

[0044] The position of the positioning window 5 is closely matched with the structure of the retention and connection device 1, and the horizontal slot-like design facilitates the passage of the force application device 4, while also enabling the force application direction of the force application device to form an effective linkage with the traction device 2 and the lingual side bubble 3. This design can avoid the problem of orthodontic force deviation caused by unstable force application direction in traditional devices, thereby ensuring that the orthodontic force can be accurately transmitted to the teeth 6 being moved, and achieving the expected orthodontic effect.

[0045] The positioning window 5 is made by a one-piece molding process, and has high structural consistency with the retention and connection device 1. This one-piece design not only improves the stability of the overall device, but also simplifies the production process and reduces manufacturing costs. At the same time, the inner edge of the positioning window is treated with a smooth finish, reducing friction between the force application device and the window edge during movement, thereby prolonging the service life of the force application device and improving the comfort of the patient when wearing.

[0046] The orthodontic press membrane holder high molecular material is a key component of the device, used to make the retention and connection device 1, which wraps the patient's dentition as a whole, ensuring that the device is closely fitted to the teeth and providing invisible orthodontic function. The material includes one or a combination of polyester (PETG), polycarbonate (PC), or polyurethane (PU). The reason for choosing these high molecular materials is that they have excellent mechanical properties, transparency, and biocompatibility, which can meet the high requirements of orthodontic devices for aesthetics, comfort, and durability.

[0047] Polyester (PETG) is widely used in the orthodontic field due to its excellent transparency and formability. It has moderate flexibility, which can provide reliable fixation force while reducing frictional damage to the tooth surface; polycarbonate (PC) has high strength and impact resistance, which is suitable for orthodontic scenarios that require greater tooth movement; polyurethane (PU) is suitable for orthodontic device designs that require more flexible support due to its excellent softness and elasticity. These materials can be selected individually according to the treatment needs, while in composite use, the characteristics of each material can be optimized to achieve a balance between mechanical properties and comfort.

[0048] The orthodontic press membrane holder high molecular material not only ensures the invisible and aesthetic effect of the device, but also realizes seamless connection between the retention and connection device 1 and other components through its excellent processing performance. The material is processed by thermoplastic forming process, which is simple and efficient in processing, and can accurately reproduce the shape of the patient's dentition, thereby ensuring the stability and adaptability of the device. By combining the advantages of different materials, the device can provide strong anchorage in actual treatment, while ensuring the comfort and safety of the patient when wearing.

[0049] In use, the device ① prepares a dental cast positive model, according to the patient's oral structure, a dental impression is obtained with a mold material, and the dental cast model is formed by pouring the impression, which accurately reflects the position and shape of the patient's teeth. According to the tooth movement design requirements, a positive model of the lingual cavity (3) is made on the lingual side of the teeth to be moved on the dental cast positive model, ensuring that the inner wall shape of the cavity matches the lingual side of the teeth completely, and the inner wall height is consistent with the sagittal height of the teeth, while reserving enough track and space for tooth movement.

[0050] ② Use orthodontic pressure membrane retainer high molecular material to make invisible device. Select medical grade polyester (PETG), polycarbonate (PC) or polyurethane (PU) as the pressure film material, heat and soften it, then cover it on the dental cast positive model, and use special equipment for vacuum forming processing, so that the material is shaped on the dental surface, forming a retention and connection device 1 that can wrap the dentition and fit the patient's tooth shape. During the shaping process, ensure that the material thickness is uniform, and trim the edges of the device to avoid discomfort when wearing.

[0051] ③ According to the design requirements, process the functional parts such as traction device 2, lingual cavity 3 and positioning window 5 on the retention and connection device 1. When processing the traction device 2, it needs to be accurately determined that it is located in the central part of the interproximal space of the premolar or molar area, and the two ends are in contact with the labial and buccal sides of the adjacent teeth, and are fixed by adhesion or buckle. The lingual cavity 3 is engraved and formed according to the shape preset by the plaster positive model, and it is ensured that it is consistent with the anatomical shape of the lingual side of the teeth. The positioning window 5 needs to be opened into a horizontal slot structure according to the size of the force applying device 4, to ensure that the force applying device can pass smoothly and realize accurate force transmission.

[0052] ④ Install the force applying device 4, connect the left and right traction devices 2 through the positioning window 5. The force applying device 4 is one of elastic rubber ring, rubber chain or rubber line, and when installing, it is ensured that its two ends are firmly connected to the traction device 2, and the length of the force applying device is adjusted, so that its elastic force value remains in the range of about 70 grams, to meet the requirement of the correction force. The force applying device should be replaced regularly, and it should be checked and replaced every 24 hours to ensure its elastic performance and correction effect.

[0053] ⑤ After the patient wears the device, the device realizes the correction function through the cooperation of various parts. The teeth move in the device, the initial stage is the lingual movement of the tooth crown, the lip movement of the tooth root, at this time the rotation center of the tooth changes, the lingual incisal edge of the tooth contacts the inner wall of the lingual cavity to form a resistance point, which prevents the tooth crown from further rotating. With the continuous application of the correction force of the force applying device 4, the tooth root moves lingually to realize the control of the root movement. Finally, the moved teeth complete the overall inward and inclined movement along the preset track of the lingual cavity 3, achieving the purpose of closing the scattered interproximal space of the anterior teeth.

[0054] Principle of action The teeth move in the device as a whole. First, the crown and the tongue move, i.e. the center of rotation of the teeth changes, at this time the lingual incisal edge of the teeth contacts the lingual bubble wall to form a resistance point to stop rotation, continue to add force, the root moves in the root and the tongue, i.e. the root movement, so as to complete the whole inward tilt movement.

[0055] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art to which the present application belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A device for closing the interspaces of the anterior teeth as a whole, characterized in that, It comprises: The retention and connection device (1) is made of orthodontic pressure membrane high polymer material, which provides the functions of fixation and connection of the invisible device, and wraps all the teeth in the dental arch as a whole; The traction device (2) is symmetrically arranged at the interproximal space of the bilateral premolar area or the buccal surface of the molar area, and the upper edge of the traction device (2) is flush with the junction of the coronal 1 / 3 and the coronal neck 1 / 3 of the buccal side of the tooth, which is used to apply correction force to the patient's teeth; The lingual cavity (3) is located on the lingual side of the patient's teeth, and the inner wall height of the lingual cavity (3) is consistent with the sagittal height of the teeth, and the inner wall shape of the lingual cavity (3) is completely matched with the shape of the lingual side of the teeth, which is used to provide the track and moving space of the tooth movement; The force applying device (4) is an elastomeric component, which is made of one of elastic rubber ring, rubber chain or rubber wire, and the single force value is not more than 3.5 ounces, and the two ends of the force applying device (4) are connected with the traction device (2) respectively, which is used to apply uniform correction force; The positioning window (5) is a horizontal slot-shaped window opened on the retention and connection device (1), which penetrates through the left and right traction devices (2), and the force applying device (4) passes through to provide correction force.

2. The device of claim 1, wherein the device is configured to close the space between the front teeth by moving the front teeth together. The traction device (2) is arranged at the central part of the interproximal space of each dental arch, and the two ends of the traction device (2) are in close contact with the buccal side of the adjacent two teeth and are fixed by bonding or buckling, which is used to transmit correction force.

3. The device for completely closing the scattered gaps between anterior teeth as described in claim 1, characterized in that: The lingual cavity (3) is processed on the dental cast model according to the shape of the moved tooth lingual side, and the inner wall of the lingual cavity (3) is consistent with the shape of the moved tooth lingual side, and the inner wall height is equal to the sagittal height of the moved tooth, which is used to provide the track and space of the tooth movement.

4. The device of claim 1, wherein: the device is a single piece. The elastic value of the force applying device (4) is 70 grams, and the force applying device (4) passes through the retention and connection device (1) through the positioning window (5) to apply correction force.

5. The device of claim 1, wherein: the device is a single piece. The positioning window (5) is a horizontal slot-shaped structure penetrating through the retention and connection device (1), with a width of 2-4 mm and a height of 1.5-2.5 mm, which is used for positioning and passing of the force applying device.

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