Orthodontic device based on prefabricated invisalign attachments

Abstract

The utility model relates to orthodontic technology field especially based on prefabricated invisible accessory's tooth correction device, including prefabricated invisible accessory and corrector, and the corrector is bow wire or tooth set, prefabricated invisible accessory includes: main part, the inner side surface shape of main part is concave type, the outer side surface shape of main part is compatible with tooth set shape to be used in the case of cooperation with tooth set and form the limit cooperation with tooth set, bottom plate, one side of bottom plate is used for bonding on the tooth surface, the other side of bottom plate is connected with the inner side surface of main part through the connecting portion, forms the upper groove between bottom plate and the inner side surface of main part above the connecting portion, forms the lower groove between bottom plate and the inner side surface of main part below the connecting portion, and the upper groove and the lower groove can be used for accommodating the bow wire, the scheme is used to realize the accurate deviation rectification after tooth dislocation, reduces the correction restart, promotes the invisible correction efficiency and clinical stability.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to a dental orthodontic device based on prefabricated invisible attachments. Background Technology

[0002] Invisible aligners, with their advantages of aesthetics, comfort, and ease of cleaning, have become the mainstream solution in the field of orthodontics. They utilize computer-designed and mass-produced transparent polymer aligners, employing elastic deformation forces to gradually move teeth to a predetermined position, thus correcting malocclusion. To precisely transmit corrective forces and control tooth movement, attachments are typically bonded to the tooth surface in clinical practice.

[0003] Currently, the industry standard for attachments is resin-based, which are shaped, cured, and trimmed directly onto the patient's teeth according to a design plan during clinical practice, and can adapt to individual differences in tooth shape. However, existing resin attachments are all solid structures and do not have any additional functions for auxiliary orthodontic treatment or repositioning.

[0004] During treatment, factors such as chewing hard objects, improper fitting, and insufficient bonding strength can easily cause teeth to deviate from their intended path and become displaced. Because the attachments lack auxiliary tools, relying solely on the deformation force of the appliance itself is insufficient for precise repositioning, and the dislocation deviation accumulates as treatment progresses. When the deviation exceeds the acceptable limit, the current treatment must be terminated, and the appliance re-scanned, redesigned, and fabricated. This not only prolongs the treatment period and increases costs but also significantly reduces the treatment efficiency and clinical stability of invisible orthodontics due to unnecessary back-and-forth tooth movement. Utility Model Content

[0005] This invention provides a dental orthodontic device based on prefabricated invisible attachments, which solves the defects of existing invisible orthodontic attachments that lack groove structure, making it difficult to reposition dislocated teeth, easily triggering orthodontic restarts, and resulting in low treatment efficiency. It achieves precise correction after tooth dislocation, reduces orthodontic restarts, and improves the efficiency and clinical stability of invisible orthodontics.

[0006] This utility model provides a dental orthodontic device based on prefabricated invisible attachments, including prefabricated invisible attachments and orthodontic appliances, wherein the orthodontic appliances are archwires or braces; the prefabricated invisible attachments include: a main body, the inner surface of which is concave, and the outer surface of which is adapted to the shape of the braces to form a limiting fit with the braces when used in conjunction with them; a base plate, one side of which is bonded to the tooth surface, and the other side of which is connected to the inner surface of the main body via a connecting part; above the connecting part, an upper groove is formed between the base plate and the inner surface of the main body, and below the connecting part, a lower groove is formed between the base plate and the inner surface of the main body, wherein the upper groove and the lower groove can accommodate the archwire.

[0007] According to one embodiment of the present invention, the main body, the base plate, and the connecting part are integrally formed.

[0008] According to one embodiment of the present invention, the main body includes a large end and a small end; in use, the large end faces the crown of the tooth, the small end faces the gingiva, and the outer surface of the main body is generally teardrop-shaped.

[0009] According to one embodiment of the present invention, when the base plate is bonded to the tooth surface, the distance between the large end and the tooth surface is greater than or equal to the distance between the small end and the tooth surface.

[0010] According to one embodiment of the present invention, an opening of the upper groove is formed between the upper edge of the base plate and the upper edge of the main body, and an opening of the lower groove is formed between the lower edge of the base plate and the lower edge of the main body; wherein, the upper and lower edges of the base plate facing the main body are respectively provided with arc-shaped chamfers; the upper and lower edges of the main body facing the base plate are also respectively provided with arc-shaped chamfers.

[0011] According to one embodiment of the present invention, both the upper groove and the lower groove are configured as groove structures with uniform width from the opening to the bottom of the groove structure with equal spacing; or, both the upper groove and the lower groove are configured such that the opening spacing of the groove structure is less than or equal to the inner wall spacing of the groove structure.

[0012] According to one embodiment of the present invention, the sum of the dimensions of the base plate, the connecting portion, and the main body in the thickness direction is 1.5 mm to 1.7 mm; and / or, the width of the main body in the direction parallel to the tooth surface is less than or equal to 2 mm; and / or, the distance between the main body and the base plate in the upper groove and the lower groove is 0.4 mm to 0.45 mm.

[0013] According to one embodiment of this utility model, when the orthodontic appliance is an archwire, the archwire is located in the same side groove of multiple prefabricated invisible attachments and is fixed by ligature wires or ligature loops; or, the archwire alternately engages with the upper and lower grooves of the prefabricated invisible attachments, wherein: the multiple prefabricated invisible attachments are respectively set at the same height on the outer surface of the teeth, and the archwire is set in an arc or wave shape along the outer surface of the teeth; or, the multiple prefabricated invisible attachments are respectively set at different heights on the outer surface of the teeth, so that the archwire alternately passes through the upper and lower grooves of the prefabricated invisible attachments at the same height.

[0014] According to one embodiment of the present invention, in use, one of the prefabricated invisible attachments is provided on each tooth, or two of the prefabricated invisible attachments are provided side by side on each tooth.

[0015] The orthodontic device based on prefabricated invisible attachments provided by this utility model improves orthodontic efficiency and stability through the structural design of the above-described embodiments. The prefabricated invisible attachment consists of a base plate, a main body, and a connecting part that connects the two. One side of the base plate is used for bonding and fixing to the tooth surface. The outer surface of the main body is adapted to the shape of the aligner and can be used independently with the aligner to form a limiting position, ensuring stable transmission of orthodontic force during conventional invisible orthodontic treatment. Simultaneously, upper and lower grooves are formed at the top and bottom of the connecting part, respectively, and these groove structures are specifically designed to accommodate the archwire. When archwire-assisted correction is required, the archwire alternately passes through the upper and / or lower grooves of multiple pre-fabricated invisible attachments in the oral cavity. This staggered arrangement of grooves among the multiple attachments creates dual lateral and longitudinal constraints on the archwire, preventing slippage or displacement during force application. Simultaneously, the archwire's own elastic deformation generates continuous and controllable corrective force, which, combined with the groove's constraint, precisely drives dislocated or misaligned teeth back onto the pre-set correction track. This eliminates the need to terminate treatment and restart the plan, effectively reducing unnecessary back-and-forth tooth movement and significantly improving the clinical applicability and treatment efficiency of invisible orthodontics. The braces and archwire can be used alone, alternately, or even simultaneously, depending on the characteristics of the malocclusion. When used simultaneously, the portion of the braces on the gingival side that might interfere with the archwire can be selectively removed. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the prefabricated concealed accessory provided by this utility model.

[0018] Figure 2 This is one of the schematic diagrams showing the usage status of the orthodontic device based on prefabricated invisible attachments provided by this utility model.

[0019] Figure 3 This is the second schematic diagram of the usage state of the orthodontic device based on prefabricated invisible attachments provided by this utility model.

[0020] Figure 4 This is the third schematic diagram showing the usage state of the orthodontic device based on prefabricated invisible attachments provided by this utility model.

[0021] Figure label: 10. Main body; 11. Large end; 12. Small end; 20. Base plate; 21. Connecting part; 31. Upper groove; 32. Lower groove. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. It should also be noted that in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] Currently, the attachments used in invisible orthodontic treatments are all custom-made from clinical resin. Once teeth are dislocated, they are difficult to reposition, easily leading to accumulated deviations and ultimately requiring a restart of the orthodontic process. This not only causes unnecessary back-and-forth movement of teeth but also significantly reduces orthodontic efficiency. Therefore, this invention provides a prefabricated invisible attachment with grooves. When teeth are severely misaligned or dislocated, the grooves, in conjunction with the archwire, can assist in correction, achieving phased correction and improving the efficiency of invisible orthodontic treatment. It is understandable that in cases of particularly crowded or misaligned teeth, the archwire can be used alone to first relieve the crowding before scanning the dentition to fabricate the braces, thus maximizing the advantages and minimizing the disadvantages and improving treatment efficiency.

[0025] The following is combined with Figures 1 to 4 This invention describes a specific implementation of the orthodontic device based on prefabricated invisible attachments.

[0026] like Figure 1As shown, this utility model provides a prefabricated invisible accessory, including: a main body 10, the inner side of the main body 10 is concave, and the outer side of the main body 10 is adapted to the shape of the braces, so as to form a limiting fit with the braces when used in conjunction with them; a base plate 20, one side of the base plate 20 is used to be bonded to the tooth surface, and the other side of the base plate 20 is connected to the inner side of the main body 10 through a connecting part 21; above the connecting part 21, an upper groove 31 is formed between the base plate 20 and the inner side of the main body 10, and below the connecting part 21, a lower groove 32 is formed between the base plate 20 and the inner side of the main body 10, and the upper groove 31 and the lower groove 32 can be used to accommodate archwires. Specifically, the inner surface of the main body 10 is concave, and its concave curved surface matches the outer edge contour of the connecting part 21 and the base plate 20. An upper groove 31 is naturally formed between the upper edge of the base plate 20 above the connecting part 21 and the upper edge of the inner surface of the main body 10, while a lower groove 32 is formed between the lower edge of the base plate 20 below the connecting part 21 and the lower edge of the inner surface of the main body 10. The width and depth of both grooves match the diameter of commonly used orthodontic archwires, allowing for stable archwire accommodation. The outer surface of the main body 10 is designed to fit the inner curved surface of the invisible aligner. When used with the aligner, the outer surface of the main body 10 fits tightly against the inner wall of the aligner, forming a physical limit and preventing relative sliding between the aligner and the teeth or attachments. The base plate 20 adopts a thin sheet structure, with one side used for bonding and fixing to the tooth surface, forming the load-bearing foundation for the attachments.

[0027] In practical applications, the aforementioned prefabricated invisible attachments can flexibly switch between two orthodontic modes: In the conventional invisible orthodontic stage, after the base plate 20 is bonded to the pre-set position of the teeth, when wearing the braces, the outer surface of the main body 10 forms a limiting fit with the braces, which can transmit the elastic corrective force of the braces and play the role of traditional prefabricated invisible attachments in controlling the movement trajectory of teeth; When teeth are severely misaligned or dislocated, there is no need to remove the attachments. The archwire can be alternately passed through the upper groove 31 and lower groove 32 of multiple prefabricated invisible attachments in the oral cavity. That is, adjacent attachments receive the archwire through the upper groove 31 and lower groove 32 respectively. The staggered arrangement of the grooves forms a bidirectional limiting for the archwire, preventing the archwire from slipping. At the same time, the elastic deformation of the archwire itself generates a controllable corrective force, playing a role similar to the repositioning effect of fixed orthodontic appliances. Alternatively, the archwire and braces can be used in combination. For example, the braces at the attachment site can be removed to add the archwire to correct the dislocated teeth. After the teeth return to the pre-set track, the archwire can be removed to restore conventional invisible orthodontic treatment.

[0028] Furthermore, the side of the base plate 20 of the prefabricated invisible attachment used for bonding to the teeth can be pre-designed with micropores or sandblasted to create a rough surface, or have microstructures such as micro-protrusions or mesh-like grooves. A silane coupling agent coating can also be applied to this surface to increase the contact area and enhance the bonding strength with the enamel through chemical bonding. The main body 10 can be made of medical-grade ceramic material, possessing both sufficient mechanical strength and good biocompatibility. The inner walls of the upper groove 31 and lower groove 32 can be rounded to prevent wear or deformation of the attachment due to sharp edges during archwire insertion. The depth of the grooves can be designed according to the needs of the orthodontic stage to accommodate different archwire specifications.

[0029] According to this utility model, a prefabricated invisible accessory comprises a main body 10, a base plate 20, and a connecting part 21, which are integrally molded. Preferably, the main body 10, base plate 20, and connecting part 21 are manufactured using an integral molding process, such as injection molding, CNC milling, or 3D printing, in a single process. This integrally molded prefabricated invisible accessory is preferably made of ceramic materials (such as alumina ceramics or zirconia ceramics) or other tooth-colored polymer materials (such as medical-grade composite resins or polyetheretherketone modified materials). On the one hand, these materials have an appearance similar to natural teeth, meeting the aesthetic requirements of invisible orthodontics; on the other hand, they have excellent mechanical properties, able to withstand the orthodontic force applied by the archwire and the pressure of the braces, and are not prone to deformation or breakage. Compared with conventional ceramic brackets, the integrally molded prefabricated invisible accessory of this utility model does not require square grooves for fixing square archwires, resulting in a simpler overall structure and a smaller size. It is not only more invisible and aesthetically pleasing, but also reduces irritation to the oral mucosa, lowers the foreign body sensation, reduces the risk of food debris accumulation, and facilitates oral hygiene for patients. Compared to conventional prefabricated invisible attachments, the shape of prefabricated attachments is not affected by clinical procedures (such as underfilling or overfilling with resin), and they are not as prone to wear as conventional resin materials. Therefore, even if a restart is required, there is no need to re-attach worn or deformed attachments. Moreover, when removing attachments at the end of treatment, it is not necessary to grind away a large amount of thick resin attachments; only the attachments need to be pried off and the residual adhesive at the base plate needs to be ground away, saving clinical operation time. Finally, the upper and lower groove design of this attachment can also be used as a traction hook in any direction in practical applications.

[0030] According to this utility model, a prefabricated invisible accessory includes a main body 10 comprising a large end 11 and a small end 12. In use, the large end 11 faces the crown of the tooth, and the small end 12 faces the gingival direction. The overall shape of the outer surface of the main body 10 is teardrop-shaped. The orientation of the main body 10 is defined based on the tooth growth direction: the large end 11 corresponds to the crown (crown tip direction), and the small end 12 corresponds to the gingival direction (gingival direction). When used on upper teeth, the outer surface of the main body 10 is a normal teardrop shape; when used on lower teeth, the outer surface of the main body 10 is an inverted teardrop shape. The smooth narrowing from the large end 11 to the small end 12 provides a better fit to the curved surface of the inner side of the invisible aligner, and a naturally transitioning inclined surface is formed at the junction of the aligner edge and the accessory. When the patient removes the aligner, this inclined surface reduces the frictional resistance between the accessory and the inner wall of the aligner, improving the ease of removal. Viewed from one side of the prefabricated invisible attachment, the width of the H-shaped groove matches the diameter of the commonly used orthodontic archwire. The archwire can be directly inserted into the groove through the upper or lower opening in an interlocking manner, achieving initial positioning without additional ligation, thus simplifying clinical operation. If enhanced retention is required, the archwire can be fixed with ligature wire using the connecting part 21 in the middle of the groove, or ligature rings can be placed at the upper or lower openings to confine the archwire within the upper or lower groove. The inner wall of the groove is preferably treated with an arc-shaped grinding process to reduce the resistance of the archwire entering the groove. In a preferred embodiment, since the mesial and distal width of the large end is greater than that of the small end, when teeth need to be straightened, the archwire can be inserted into the upper groove, and when free tilting and movement are required, the archwire can be inserted into the lower groove.

[0031] According to this utility model, in a prefabricated invisible accessory, when the base plate 20 is bonded to the tooth surface, the distance between the large end 11 and the tooth surface is greater than or equal to the distance between the small end 12 and the tooth surface. Specifically, after the base plate 20 is fixed to the tooth surface by bonding, the radial distance formed between the large end 11 (coronal) of the main body 10 and the tooth surface is greater than or equal to the distance between the small end 12 (gingival) and the tooth surface. This spacing design makes the inner surface of the main body 10 a sloping concave surface that is wider at the top and narrower at the bottom. On the one hand, this matches the teardrop-shaped outer surface contour, ensuring the mechanical balance of the overall structure of the accessory; on the other hand, the larger spacing of the large end 11 provides sufficient space for the upper groove section of the H-shaped groove, facilitating archwire fitting and adjustment; the smaller spacing of the small end 12 makes it easier to remove the braces.

[0032] According to a prefabricated concealed accessory of this utility model, an upper groove 31 is formed between the upper edge of the base plate 20 and the upper edge of the main body 10, and a lower groove 32 is formed between the lower edge of the base plate 20 and the lower edge of the main body 10. The upper and lower edges of the base plate 20 facing the main body 10 are respectively provided with arc-shaped chamfers; the upper and lower edges of the main body 10 facing the base plate 20 are also respectively provided with arc-shaped chamfers. The upper and lower edges of the base plate 20 facing the main body 10 (i.e., the inner side) are both machined with arc-shaped chamfers, which smoothly transition along the edge of the base plate 20. The upper and lower edges of the main body 10 facing the base plate 20 (i.e., the inner side) corresponding to the chamfer position of the base plate 20 are also provided with matching arc-shaped chamfers of the same specifications. The chamfered upper edge of the base plate 20 and the chamfered upper edge of the main body 10 together form the opening edge of the upper groove 31, while the chamfered lower edge of the base plate 20 and the chamfered lower edge of the main body 10 together form the opening edge of the lower groove 32. On the one hand, this eliminates sharp edges at the groove opening; on the other hand, the smooth chamfered contour guides the archwire to quickly embed into the groove, reducing insertion resistance and improving clinical operation efficiency.

[0033] According to a prefabricated concealed accessory of this utility model, both the upper groove 31 and the lower groove 32 are configured as equally spaced groove structures with a uniform width from the opening to the bottom of the groove structure; or, both the upper groove 31 and the lower groove 32 are configured such that the opening spacing of the groove structure is less than or equal to the inner wall spacing of the groove structure. Specifically, the lateral width of the groove remains uniform from the opening end to the bottom. This width dimension matches the diameter of commonly used orthodontic archwires, so that the inner wall of the groove forms parallel side walls. When the archwire is embedded in the groove, the side walls can form a uniform radial constraint on the archwire, ensuring that the archwire is always in the center position of the groove when subjected to force deformation, avoiding archwire displacement or jamming caused by changes in the groove width. At the same time, the uniform width extending from the opening to the bottom can reduce the guiding resistance when the archwire enters the groove, facilitating the quick completion of the archwire insertion and positioning operation. In another preferred embodiment, the opening spacing of the groove structure is small. The small opening spacing can provide a certain limiting effect at the opening to prevent the archwire from coming out of the groove structure. The archwire can enter and exit the upper groove 31 and the lower groove 32 by squeezing open the structure at the opening.

[0034] According to a prefabricated invisible accessory of this utility model, the thickness dimensions of the base plate 20, the connecting part 21, and the main body 10 are preferably 1.5mm to 1.7mm. A preferred embodiment has the base plate 20 with a thickness of 0.7mm, the main body 10 with a thickness of 0.4mm to 0.5mm, and the connecting part 21 with a thickness of 0.4mm to 0.5mm. The above thickness range is achieved by stacking these three components, ensuring structural strength to withstand orthodontic forces while avoiding a foreign body sensation in the patient due to excessive size. Furthermore, the width of the main body 10 in the direction parallel to the tooth surface is preferably less than or equal to 2mm, and its length (dimension along the tooth axis) is greater than the length of the base plate 20, preferably 1.5mm to 2.5mm. This size design accommodates the labial and buccal surfaces of most teeth, ensuring effective fit with the braces while minimizing interference with adjacent teeth and oral soft tissues. Furthermore, the distance between the main body 10 and the base plate 20 in the upper groove 31 and the lower groove 32 is preferably 0.4mm to 0.45mm, which matches the commonly used orthodontic archwire diameter of 0.014~0.018 inches, enabling stable fitting of the archwire and ensuring uniform transmission of corrective force.

[0035] like Figure 2 , Figure 3 and Figure 4 As shown, this utility model also provides an orthodontic device, including the prefabricated invisible attachment and orthodontic appliance of the above embodiments; the orthodontic appliance is an archwire or braces. The orthodontic device provided by this utility model is described below, and the orthodontic device described below can be referred to in correspondence with the prefabricated invisible attachment described above.

[0036] Specifically, the orthodontic device of this invention uses prefabricated invisible attachments as a supporting structure. Different orthodontic needs are achieved through the selective combination of the prefabricated invisible attachments and orthodontic appliances (archwires or braces). When braces are used as the orthodontic appliance, the inner wall of the braces fits snugly against the outer surface of the prefabricated invisible attachment body 10. This locking and locking mechanism transmits the elastic corrective force of the braces, enabling directional tooth movement in conventional invisible orthodontic treatment. When archwires are used as the orthodontic appliance, the archwire can be embedded in the upper groove 31 or lower groove 32 of the prefabricated invisible attachment. The grooves constrain the archwire, and the archwire itself provides elastic deformation force, enabling tooth repositioning or complex movement control. The two types of appliances can be flexibly switched according to the treatment stage, achieving seamless connection without removing the attachments.

[0037] Furthermore, according to the corrective device of this utility model, when the corrector is a bowwire, the bowwire can be as follows: Figure 2 The groove shown is located on the same side of multiple prefabricated concealed accessories and is secured by ligature wires or ligature loops; or as shown in the image. Figure 3 and Figure 4As shown, the archwire alternately engages with the upper groove 31 and lower groove 32 of the prefabricated invisible attachments. Multiple prefabricated invisible attachments are positioned at equal heights on the outer surface of the teeth, with the archwire arranged in an arc or wave shape along the outer surface. Alternatively, multiple prefabricated invisible attachments are arranged at staggered heights on the outer surface of the teeth, allowing the archwire to alternately pass through the upper groove 31 and lower groove 32 of the prefabricated invisible attachments at the same height. When teeth are misaligned, the nickel-titanium archwire will deform in a wave-like shape upon entering the groove; the straightening process of the archwire will correct the misalignment. Alternatively, to provide a torque in a specific direction for a particular tooth, attachments at different heights can be attached to the mesial and distal ends of that tooth, so that the archwire generates a torque in a specific direction as it alternately passes through the upper groove 31 and lower groove 32 of the prefabricated invisible attachments.

[0038] like Figure 2 , Figure 3 and Figure 4 As shown, when the orthotic device is a bowwire, the way the bowwire and pre-fabricated invisible accessories are used can be varied. For example... Figure 2 As shown, one method involves the archwire being located within the same side groove of multiple prefabricated concealed attachments, and secured in place by ligature wires or ligature loops, ensuring a stable connection between the archwire and the attachments to transmit corrective force. For example... Figure 3 and Figure 4 As shown, another method involves alternating archwires with the upper groove 31 and lower groove 32 of the prefabricated concealment attachments, which can be implemented in several ways. One such method is a level setting scheme, such as... Figure 3 As shown, multiple prefabricated invisible attachments on the outer surface of the teeth to be corrected are set at the same height (at the same horizontal position along the tooth axis). At this time, the archwire can be set in an arc or wave shape along the outer surface of the teeth. When the teeth are misaligned, the nickel-titanium archwire will naturally deform into a wave shape when inserted into the groove, using the restoring force generated during the straightening process to correct the misalignment. If a wave-shaped setting is used, the crest of the archwire corresponds to the upper groove 31 of the preceding attachment, and the trough corresponds to the lower groove 32 of the following attachment. Through the deformation tension of the archwire and the limiting effect of the grooves, a continuous corrective force is applied to the teeth. The second method is a staggered setting scheme, such as... Figure 4 As shown, multiple prefabricated invisible attachments are arranged in a staggered manner along the outer surface of the tooth, so that the upper groove 31 and lower groove 32 of all attachments form a continuous horizontal path. The archwire can pass through the upper groove 31 of the preceding attachment and the lower groove 32 of the following attachment at the same height without bending. The staggered arrangement of the attachments achieves natural constraint on the archwire. In addition, in order to provide a torque in a specific direction to a tooth, attachments at different heights can be bonded to the mesial and distal regions of the tooth. When the archwire alternately passes through the upper groove 31 and lower groove 32 of these two attachments, it can form a specific bending shape and generate a torque in the required direction, thereby achieving precise control of the tooth.

[0039] Furthermore, according to the orthodontic device of this utility model, in use, one prefabricated invisible attachment is set on each tooth, or two prefabricated invisible attachments are set side by side on each tooth. For teeth with mild malocclusion requiring only unidirectional orthodontic force, only one prefabricated invisible attachment is attached to each tooth. The movement control requirements can be met by the cooperation of this attachment with the braces or archwire, which has the advantages of simple operation and small area occupied on the tooth surface. For teeth requiring special directional torque, two prefabricated invisible attachments are attached side by side on the labial and buccal surfaces of a single tooth. The two attachments can be used simultaneously with the braces to enhance the limiting effect, or used separately with the archwire to apply multidirectional orthodontic force, thereby improving the orthodontic accuracy.

[0040] Preferably, in the case of two prefabricated invisible attachments, torsional force can be provided by passing the archwire through the upper groove 31 and lower groove 32 of the two prefabricated invisible attachments respectively. Specifically, when two prefabricated invisible attachments are placed side by side on a single tooth, torsional force can be generated through a special way of passing the archwire. For example, one end of the archwire is embedded in the upper groove 31 of the first attachment, and the other end is obliquely passed through the lower groove 32 of the second attachment (or vice versa), so that the archwire forms an inclined tension state between the two attachments. The inclined tension of the archwire is converted into a torsional torque acting on the tooth, thereby correcting the tooth rotation deformity.

[0041] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "method," "specific method," or "some methods," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or method is included in at least one embodiment or method of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or method. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or methods. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or methods described in this specification, as well as the features of different embodiments or methods.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tooth aligning device based on prefabricated invisalign attachments, characterized by, Includes prefabricated invisible attachments and orthodontic appliances, wherein the orthodontic appliances are archwires or braces; The prefabricated stealth accessory includes: The main body (10) has a concave inner surface and an outer surface that is adapted to the shape of the braces, so as to form a limiting fit with the braces when used in conjunction with them. A base plate (20) is provided, one side of which is used to be bonded to the tooth surface, and the other side of which is connected to the inner side of the main body (10) via a connecting part (21). Above the connecting part (21), an upper groove (31) is formed between the base plate (20) and the inner side of the main body (10), and below the connecting part (21), a lower groove (32) is formed between the base plate (20) and the inner side of the main body (10). The upper groove (31) and the lower groove (32) can be used to accommodate the bowwire.

2. The orthodontic device based on prefabricated invisible attachments according to claim 1, characterized in that, The main body (10), the base plate (20) and the connecting part (21) are integrally formed structures.

3. The preformed contact lens-based orthodontic device of claim 1, wherein, The main body (10) includes a large end (11) and a small end (12). When in use, the large end (11) faces the crown of the tooth, the small end (12) faces the gingiva, and the outer surface of the main body (10) is generally teardrop-shaped.

4. The preformed contact lens-based orthodontic device of claim 3, wherein, When the base plate (20) is bonded to the tooth surface, the distance between the large end (11) and the tooth surface is greater than or equal to the distance between the small end (12) and the tooth surface.

5. The preformed contact lens-based orthodontic device of claim 1, wherein, An opening of the upper groove (31) is formed between the upper edge of the base plate (20) and the upper edge of the main body (10), and an opening of the lower groove (32) is formed between the lower edge of the base plate (20) and the lower edge of the main body (10). Among them, the upper and lower edges of the bottom plate (20) facing the main body (10) are respectively provided with arc-shaped chamfers; The upper and lower edges of the main body (10) facing the bottom plate (20) are also provided with arc-shaped chamfers.

6. The preformed contact lens-based orthodontic device of claim 5, wherein, Both the upper groove (31) and the lower groove (32) are configured as groove structures with uniform width from the opening to the bottom of the groove structure with equal spacing; Alternatively, both the upper groove (31) and the lower groove (32) are configured such that the opening spacing of the groove structure is less than or equal to the inner wall spacing of the groove structure.

7. The preformed, invisible attachment-based orthodontic device of any one of claims 1 to 6, wherein, The sum of the thickness dimensions of the base plate (20), the connecting part (21), and the main body (10) is 1.5 mm to 1.7 mm. And / or, the width of the body (10) in the direction parallel to the tooth surface is less than or equal to 2 mm; And / or, within the upper groove (31) and the lower groove (32), the distance between the main body (10) and the base plate (20) is 0.4 mm to 0.45 mm.

8. The orthodontic appliance based on prefabricated invisible attachments according to any one of claims 1 to 6, characterized in that, When the corrector is an archwire, the archwire is located in the same side groove of the plurality of prefabricated invisible accessories and is fixed by ligature wires or ligature loops; Alternatively, the archwire alternately engages with the upper groove (31) and lower groove (32) of the prefabricated invisible attachment, wherein: multiple prefabricated invisible attachments are respectively set at the same height on the outer surface of the tooth, and the archwire is set in an arc or wave shape along the outer surface of the tooth; or, multiple prefabricated invisible attachments are respectively set at different heights on the outer surface of the tooth, so that the archwire alternately passes through the upper groove (31) and lower groove (32) of the prefabricated invisible attachment at the same height.

9. The preformed contact lens-based orthodontic device of claim 8, wherein, In use, one of the prefabricated invisible attachments is placed on each tooth, or two of the prefabricated invisible attachments are placed side by side on each tooth.

Images