Invisible aligner and invisible aligner set

Abstract

The utility model provides a kind of invisible appliance and invisible appliance group, invisible appliance includes the appliance body and guide plate connected, appliance body forms the cavity containing tooth, guide plate is located at the lingual surface of appliance body, guide plate includes action surface and support part, action surface connects appliance body and is used to support the part to be corrected, support part simultaneously abuts action surface and dental tissue, dental tissue includes tooth lingual surface and / or non crown surface, and non crown surface is the extension surface of tooth lingual surface towards palatal direction.When support part simultaneously abuts action surface and dental tissue, support part can disperse the force exerted by the part to be corrected on action surface to dental tissue, can effectively avoid the phenomenon such as deformation, collapse of action surface.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to an invisible aligner and an invisible aligner assembly. Background Technology

[0002] In orthodontic treatment, many cases require a dental guide to support the area to be treated. However, the guide is generally unsupported underneath, and when subjected to forces from the area to be treated, it is prone to deformation or collapse.

[0003] For example, correction of deep overbite usually requires opening the bite and re-establishing a normal occlusal relationship. The main methods to assist in opening the upper and lower jaws are jaw pads or guides, but current guides have disadvantages such as being prone to deformation and collapse. Utility Model Content

[0004] The purpose of this invention is to provide an invisible orthodontic device that helps improve the rigidity of the guide plate.

[0005] This utility model provides an invisible aligner, including an aligner body and a guide plate connected together. The aligner body forms a cavity to accommodate teeth. The guide plate is located on the lingual surface of the aligner body. The guide plate includes an action surface and a support portion. The action surface is connected to the aligner body and is used to support the area to be treated. The support portion abuts against the action surface and the dentition tissue. The dentition tissue includes the lingual surface and / or non-crown surface of the teeth. The non-crown surface is an extension of the lingual surface of the teeth toward the palate.

[0006] Optionally, the area to be treated is the opposing tooth or the tongue, and the non-crown surface includes the gingival region and / or palatal tissue.

[0007] Optionally, the action surface is configured such that, when in orthodontic condition, the action surface supports the opposing teeth.

[0008] Optionally, the orthodontic appliance body includes a first surface that covers the lingual surface of the teeth, and the functional surface is connected to the first surface; or, the orthodontic appliance body includes a first surface that covers the lingual surface of the teeth and a second surface that is connected to the first surface, with a recess formed between the second surface and the first surface, and the functional surface is connected to the second surface.

[0009] Optionally, at least a portion of the first surface is in close contact with the lingual surface of the tooth.

[0010] Optionally, the support includes a first support surface and at least one surrounding wall surface, the first support surface being in close contact with the dental tissue, and the surrounding wall surface connecting the first support surface and the working surface.

[0011] Optionally, the support includes a first support surface and a plurality of surrounding wall surfaces, the first support surface and the plurality of surrounding wall surfaces forming a recessed structure, the recessed structure including an opening at least located on the working surface.

[0012] Optionally, the orthodontic appliance body includes a first surface that covers the lingual surface of the teeth, the functional surface being connected to the first surface, and the first supporting surface being used to cover the lingual surface of the teeth, or the first supporting surface being used to cover the lingual surface of the teeth and the gingival region.

[0013] Optionally, the plurality of enclosure surfaces include a first enclosure surface, which connects the lower edge of the first support surface and the functional surface.

[0014] Optionally, the plurality of enclosure surfaces further include a second enclosure surface and a third enclosure surface, wherein the second enclosure surface connects to the first support surface and the proximal side of the first enclosure surface and extends to the functional surface, and the third enclosure surface connects to the first support surface and the distal side of the first enclosure surface and extends to the functional surface.

[0015] Optionally, the second enclosure surface is substantially perpendicular to the first support surface and the first enclosure surface, and the third enclosure surface is substantially perpendicular to the first support surface and the first enclosure surface.

[0016] Optionally, the working surface includes an end edge facing away from the body of the orthodontic appliance, and there is a gap between the support and the end edge.

[0017] Optionally, the first support surface is used to enclose the non-crown surface, and the plurality of surrounding surfaces include a second surrounding surface and a third surrounding surface. The second surrounding surface is connected to the mesial side of the first support surface and extends to the functional surface, and the third surrounding surface is connected to the distal side of the first support surface and extends to the functional surface.

[0018] Optionally, the working surface includes an end edge opposite to the body of the orthodontic appliance, and the second and third enclosure surfaces extend to the end edge.

[0019] Optionally, the working surface includes an end edge facing away from the body of the orthodontic appliance, the guide plate further includes a connecting surface that connects to the end edge and extends downward, and the recessed structure further includes an opening located on the connecting surface.

[0020] Optionally, the end of the connecting surface away from the end edge is a bent surface, and the bent surface abuts against the non-crown surface.

[0021] Optionally, the orthodontic appliance body includes a first surface that covers the lingual surface of the teeth and a second surface that connects to the first surface. A recess is formed between the second surface and the first surface. The working surface is connected to the second surface. The recessed structure also includes an opening located on the second surface.

[0022] Optionally, the orthodontic appliance body includes a first surface that covers the lingual surface of the teeth, the functional surface that is connected to the first surface, and the first supporting surface that covers the lingual surface and non-crown surface of the teeth.

[0023] Optionally, the first support surface has a first width along the mesiodistal direction, and the lingual surface of the first tooth has a second width along the mesiodistal direction. The ratio of the first width to the second width is in the range of 1 / 4 to 3 / 4. When the first support surface corresponds to the lingual surface of the tooth, the first tooth is the tooth corresponding to the first support surface. When the first support surface corresponds to the interdental space, the first tooth is the tooth on the left or right side of the first support surface.

[0024] Optionally, the working surface includes an end edge opposite to the body of the orthodontic appliance, the first support surface is used to wrap the palatal tissue, and the surrounding wall surface connects the first support surface and the end edge.

[0025] Optionally, the enclosure surface is substantially perpendicular to the working surface, and the first supporting surface is bent outward relative to the enclosure surface.

[0026] Optionally, the working surface extends generally in a horizontal direction.

[0027] Optionally, the guide plate has a continuous structure in the mesiodistal direction, and the extension range of the guide plate in the mesiodistal direction covers at least a continuous number of anterior teeth.

[0028] Optionally, the orthodontic appliance body and the guide plate are integrally formed.

[0029] This utility model provides an invisible aligner set, including multiple invisible aligners as described in any of the above technical solutions, wherein the multiple invisible aligners satisfy at least one of the following variation trends: The support includes a first support surface and a first surrounding wall surface. The first support surface is in close contact with the dental and jaw tissues. The first surrounding wall surface connects the lower edge of the first support surface and the working surface. The first surrounding wall surface and the first support surface have a first included angle. The first included angle of the clear aligner in the Nth orthodontic step is greater than the first included angle of the clear aligner in the N+Mth orthodontic step. The working surface has a maximum length in the sagittal direction, and the maximum length of the clear aligner in the Nth orthodontic step is greater than the maximum length of the clear aligner in the N+Mth orthodontic step. Where N and M are both positive integers.

[0030] This utility model provides an invisible aligner assembly, including the invisible aligner as described in any of the above technical solutions, and an opposing invisible aligner that matches the opposing teeth, wherein the working surface is used to support the opposing invisible aligner.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows: when the support part simultaneously abuts against the action surface and the dental tissue, the support part can disperse the force exerted by the component to be treated on the action surface to the dental tissue, which can effectively avoid deformation, collapse and other phenomena of the action surface. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of an invisible orthodontic appliance according to one embodiment of the present invention (a first specific example in the first implementation form); Figure 2 yes Figure 1 Enlarged schematic diagram of the middle section structure; Figure 3 yes Figure 2 A cross-sectional view along line C1-C1 (passing through the first support surface and the first enclosure wall surface); Figure 4 yes Figure 2 A sectional view along line C2-C2 (passing through the second or third enclosure wall); Figure 5 This is a rear view of an invisible orthodontic appliance according to one embodiment of the present invention (a first specific example in the first implementation form); Figure 6 This is a schematic diagram of an invisible orthodontic appliance according to one embodiment of the present invention (a second specific example in the first implementation form); Figure 7 yes Figure 6 A diagram illustrating the wearing of invisible aligners on the jaw; Figure 8 yes Figure 7 A sectional view along line D1-D1 (excluding the support section); Figure 9 yes Figure 7 A sectional view along line D2-D2 (passing through the second or third enclosure wall); Figure 10 This is a schematic diagram of an invisible orthodontic appliance according to one embodiment of the present invention (a third specific example in the first implementation). Figure 11 yes Figure 10 A cross-sectional view along line E1-E1 (passing through the first support surface and the first enclosure wall surface); Figure 12 yes Figure 10 A sectional view along line E2-E2 (passing through the second or third enclosure wall); Figure 13 This is a schematic diagram of an invisible orthodontic appliance according to one embodiment of the present invention (the fourth specific example in the first implementation form); Figure 14 yes Figure 13 A cross-sectional view of F1-F1 (passing through the first support surface and the first enclosure wall surface); Figure 15 yes Figure 13 A sectional view of F2-F2 (passing through the second or third enclosure wall); Figure 16 This is a schematic diagram of an invisible orthodontic appliance according to one embodiment (second implementation) of this utility model; Figure 17 yes Figure 16 Sectional view of G1-G1; Figure 18 This is a schematic diagram of an invisible orthodontic appliance assembly according to one embodiment of the present invention; Figure 19 This is a schematic diagram of an embodiment of the present invention, showing a clear aligner assembly comprising multiple clear aligners corresponding to different orthodontic steps. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0034] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] Combination Figures 1 to 5 This is a schematic diagram of an invisible orthodontic appliance 100 according to one embodiment of the present invention.

[0036] The invisible aligner 100 includes a connected aligner body 10 and a guide plate 20.

[0037] The orthodontic appliance body 10 forms a cavity S1 to accommodate tooth T1. The orthodontic appliance body 10 includes a first surface B1 that covers the lingual surface A1 of the tooth, an outer surface B2 that covers the labial and buccal surfaces A2 of the tooth, and an upper end surface B3 that connects the first surface B1 and the outer surface B2. The first surface B1, the upper end surface B3, and the outer surface B2 are sequentially connected to form a shell-like structure, and the middle part of the shell-like structure is the cavity S1.

[0038] When the invisible aligner 100 is worn, at least a portion of the first surface B1 of the aligner body 10 is in close contact with the lingual surface A1 of the tooth, at least a portion of the lateral surface B2 is in close contact with the labial and buccal surface A2 of the tooth, and at least a portion of the upper surface B3 is in close contact with the tip A3 of the tooth (when the tooth is an anterior tooth, the upper surface B3 is in close contact with the incisal edge of the tooth; when the tooth is a posterior tooth, the upper surface B3 is in close contact with the occlusal surface of the tooth).

[0039] The appliance body 10 can cover the entire jaw, or the appliance body 10 can cover only multiple teeth in the entire jaw. Here, we take the example of the appliance body 10 covering the entire jaw.

[0040] The guide plate 20 is located on the lingual side of the appliance body 10. The guide plate 20 includes an action surface 21 and a support portion 30. The action surface 21 is connected to the appliance body 10 and is used to support the area to be treated. The support portion 30 simultaneously abuts against the action surface 21 and the dentition, which includes the lingual surface A1 of the teeth and / or the non-crown surface, where the non-crown surface is the extension of the lingual surface A1 of the teeth toward the palate.

[0041] The non-crown surface may include the gingival region A4 and / or the palatal tissue A5. The gingival region A4 may connect to the lingual surface of the tooth A2, and the palatal tissue A5 may connect to the gingival region A4.

[0042] When the support part 30 simultaneously abuts against the action surface 21 and the dental tissue, the support part 30 can disperse the force exerted by the component to be treated on the action surface 21 to the dental tissue, which can effectively prevent the action surface 21 from deforming or collapsing.

[0043] Optionally, the area to be treated can be the opposing teeth or the tongue.

[0044] When the action surface 21 is used to support the opposing tooth T2, it can help the patient open the bite.

[0045] When the working surface 21 is used to support the tongue, it can help to elevate the tongue.

[0046] This embodiment uses the opposing teeth as an example to illustrate the area to be treated. The tooth T1 enclosed by the appliance body 10 can be a maxillary tooth, and the opposing tooth T2 supported by the action surface 21 is a mandibular tooth. Alternatively, the tooth T1 enclosed by the appliance body 10 can be a mandibular tooth, and the opposing tooth T2 supported by the action surface 21 is a maxillary tooth. Here, we take the example of the tooth T1 enclosed by the appliance body 10 being a mandibular tooth.

[0047] The active surface 21 is configured to support the opposing tooth T2 when in orthodontic condition.

[0048] The orthodontic state refers to the coordinated state of the upper and lower jaws as determined by the design parameters. The orthodontic state is the final, stable state of the upper and lower jaws, not the process state before reaching that final state. In the orthodontic state, the upper and lower jaws are in a specific final state, achieving the designed parameters. Here, the final state refers to the state where the action surface 21 provides stable support to the opposing teeth T2, thus enabling open occlusion.

[0049] Optional, combined Figure 1 The working surface 21 is connected to the first surface B1. Alternatively, the orthodontic appliance body 10 may also include a second surface B4 connecting the first surface B1, with a recess S formed between the second surface B4 and the first surface B1, and the working surface 21 connecting the second surface B4 (see details). Figure 6 ).

[0050] When the first surface B1 and the second surface B4 cooperate to form a recess S, the first surface B1 covers the lingual surface A1 of the tooth, ensuring the overall coverage of the invisible aligner 100 on the tooth T1 and preventing the addition of the guide plate 20 from weakening the coverage of the tooth T1. The working surface 21 is connected to the first surface B1 through the second surface B4. The second surface B4 can raise the working surface 21 and control the opening height, ensuring the function of the guide plate 20.

[0051] Optionally, the support portion 30 includes a first support surface 31 and at least one surrounding wall surface 32, the first support surface 31 being in close contact with the dental tissue, and the surrounding wall surface 32 connecting the first support surface 31 and the working surface 21.

[0052] Damage to the dental tissue can be avoided through the surface-to-surface contact between the first support surface 31 and the dental tissue. Surface-to-surface contact provides a larger contact area, which helps to disperse the force.

[0053] The support part 30 can be implemented in various forms.

[0054] In the first implementation, combined Figures 1 to 15 The support portion 30 includes a first support surface 31 and a plurality of surrounding wall surfaces 32. The first support surface 31 and the plurality of surrounding wall surfaces 32 form a recessed structure S2. The recessed structure S2 includes an opening S21 located at least on the working surface 21.

[0055] The support portion 30 is a recessed structure connecting the working surface 21. The support portion 30 can act as a reinforcing rib to improve the strength of the guide plate 20 itself. The first support surface 31 is in close contact with the dental and jaw tissue, which can improve the coverage of the invisible aligner 100 on the tooth T1. The first support surface 31 can disperse the biting force F exerted by the opposing tooth T2 on the working surface 21 to the tooth T1, which can effectively reduce the deformation of the working surface 21.

[0056] In this implementation, the recessed support portion 30 can have various specific examples.

[0057] In the first specific example, combined Figures 1 to 5 The orthodontic appliance body 100 includes a first surface B1 that covers the lingual surface A1 of the teeth, an active surface 21 connected to the first surface B1, and a first support surface 31 for covering the lingual surface A1 of the teeth, or the first support surface 31 for covering the lingual surface A1 of the teeth and the gingival region A4.

[0058] The working surface 21, near the front edge 211 of the appliance body 10, can be connected to the first surface B1 of the appliance body 10. The first surface B1 of the appliance body 10 can still be retained at the upper end of the front edge 211, while the first surface B1 below the front edge 211 can be removed. The position of the front edge 211 can be used to define the opening height of the maxillary and mandibular occlusion. The front edge 211 is lower than the upper surface B3 of the appliance body 10.

[0059] When the first surface B1 below the front edge 211 is removed, the coverage of the lingual surface A1 of the tooth by the appliance body 10 will be weakened. The first support surface 31 of the connecting action surface 21 still abuts against the lingual surface A1 of the tooth, which can compensate for the lack of coverage of the lingual surface A1 of the tooth.

[0060] Optionally, the first support surface 31 can also be used to wrap the gingival region A4, that is, the first support surface 31 extends downward through the gingival end D of tooth T1 to the gingival region A4.

[0061] Optionally, the plurality of enclosure surfaces 32 include a first enclosure surface 32a, which connects the lower edge 311 of the first support surface 31 and the working surface 21.

[0062] The first enclosure surface 32a connects to the lower edge 311 and bends upward to connect to the working surface 21. The first supporting surface 31 and the first enclosure surface 32a form a first included angle α1.

[0063] The lower edge 311 of the first support surface 31 may be located above, at, or below the gingival end D of tooth T1.

[0064] The plurality of enclosure surfaces 32 also include a second enclosure surface 32b and a third enclosure surface 32c. The second enclosure surface 32b connects the first support surface 31 and the proximal side of the first enclosure surface 32a and extends to the working surface 21, and the third enclosure surface 32c connects the first support surface 31 and the distal side of the first enclosure surface 32a and extends to the working surface 21.

[0065] The first supporting surface 31, the first enclosing wall surface 32a, the second enclosing wall surface 32b, and the third enclosing wall surface 32c are connected to form a supporting part 30. The first supporting surface 31, the first enclosing wall surface 32a, the second enclosing wall surface 32b, and the third enclosing wall surface 32c form a recessed structure S2. The recessed structure S2 extends upward and penetrates the working surface 21. The recessed structure S2 can be regarded as being formed by a portion of the working surface 21 being recessed downward.

[0066] The second enclosure surface 32b is generally perpendicular to the first support surface 31 and the first enclosure surface 32a, and the third enclosure surface 32c is generally perpendicular to the first support surface 31 and the first enclosure surface 32a.

[0067] The first support surface 31 may be an anatomical surface that matches the lingual surface of the tooth A1 (or the lingual surface of the tooth A1 and the gingival region A4), and the first wall surface 32a, the second wall surface 32b and the third wall surface 32c may be planes.

[0068] The lingual surface A1 of the tooth (or the gingival region A4) can effectively support the first surrounding wall surface 32a, the second surrounding wall surface 32b, and the third surrounding wall surface 32c through the first supporting surface 31, thereby improving the stiffness of the first surrounding wall surface 32a, the second surrounding wall surface 32b, and the third surrounding wall surface 32c. The first surrounding wall surface 32a, the second surrounding wall surface 32b, and the third surrounding wall surface 32c can also be used to support the working surface 21, thereby improving the stiffness of the working surface 21.

[0069] When the action surface 21 is subjected to the occlusal force F applied by the opposing tooth T2, the occlusal force F will be transmitted to the first wall surface 32a, the second wall surface 32b and the third wall surface 32c. The first wall surface 32a, the second wall surface 32b and the third wall surface 32c have high stiffness and can effectively disperse the occlusal force F on the action surface 21 without deforming themselves.

[0070] Optional, combined Figure 3 The first included angle α1 between the first wall surface 32a and the first support surface 31 can be approximately a right angle. When the occlusal force F is transmitted to the first wall surface 32a, a first component force F1 can be formed at the first wall surface 32a that is approximately perpendicular to the first support surface 31 (i.e., approximately perpendicular to the lingual surface A1 of the tooth). This first component force F1 can be distributed from the first wall surface 32a to the root of the tooth T1, thereby reducing the deformation of the action surface 21.

[0071] The first included angle α1 between the first enclosure surface 32a and the first support surface 31 can also be other angles, which can also achieve the effect of reducing the deformation of the action surface 21.

[0072] Combination Figure 4The occlusal force F acting on the action surface 21 can also be transmitted to the second and third wall surfaces 32b and 32c. Both the second and third wall surfaces 32b and 32c are perpendicular to the first support surface 31, and a second component force F2, approximately perpendicular to the first support surface 31 (i.e., approximately perpendicular to the lingual surface A1 of the tooth), can be formed at the second and third wall surfaces 32b and 32c. This second component force F2 can be distributed from the second and third wall surfaces 32b and 32c to the lingual surface A1 of the tooth, thereby reducing the deformation of the action surface 21.

[0073] Optionally, the working surface 21 extends approximately horizontally. The working surface 21, acting as a guide, primarily assists the teeth in opening the bite.

[0074] "The action surface 21 extends roughly in the horizontal direction" means that the overall extension trend of the action surface 21 is in the horizontal direction, without considering the extension direction of other structures on the action surface 21.

[0075] Optionally, the working surface 21 can be a plane, which extends approximately in the horizontal direction.

[0076] Alternatively, reinforcing ribs may be provided on the working surface 21, and the reinforcing ribs may be spaced apart from the support part 30.

[0077] The reinforcing rib can be concave or convex, and it can improve the rigidity of the integrated working surface 21. The area on the working surface 21 excluding the reinforcing rib extends approximately horizontally.

[0078] Alternatively, a semi-anatomical region may be provided on the functional surface 21, the shape of which is roughly the same as that of the opposing tooth T2.

[0079] "Largely consistent" means that the two are perfectly matched, or that there is a small gap between them.

[0080] The semi-anatomical region can be an irregular concave portion, and its shape perfectly matches the incisal edge shape of the opposing tooth T2. When the action surface 21 supports the opposing tooth T2, the opposing tooth T2 is confined within the semi-anatomical region, and the opposing tooth T2 and the semi-anatomical region cannot move relative to each other within the occlusal surface, which can improve the stability of the upper and lower jaws in the open occlusal state.

[0081] In the mesiodistal direction, the semi-anatomical region can have different depths to accommodate different opposing teeth T2.

[0082] Alternatively, the semi-anatomical region can be a concave area, and its shape does not perfectly match the incisal shape of the opposing tooth T2. When the action surface 21 supports the opposing tooth T2, there is a small gap between the opposing tooth T2 and the semi-anatomical region, and the opposing tooth T2 and the semi-anatomical region can move relative to each other within a small range within the occlusal surface.

[0083] Optionally, the guide plate 20 has a continuous structure in the mesiodistal direction, and the extension range of the guide plate 20 in the mesiodistal direction covers at least multiple consecutive anterior teeth.

[0084] Guide plate 20 is a large-sized guide plate that can support more opposing teeth T2.

[0085] The functional surface 21 in the guide plate 20 is a large supporting surface. The first surface B1 connected to the front edge 211 of the functional surface 21 corresponds to multiple anterior teeth. The functional surface 21 has a wide extension range in the mesiodistal direction, which can support multiple opposing teeth T2, and can be adapted to deep overbite cases with multiple sagittal malocclusions of the upper and lower jaws.

[0086] For example, the guide plate 20 can extend in the mesiodistal direction to cover the two central incisors, two lateral incisors and two canines in tooth T1, that is, the guide plate 20 is set for six consecutive anterior teeth.

[0087] Optionally, the guide plate 20 may extend to cover several posterior teeth, for example, to the first premolar.

[0088] Optionally, the support portion 30 is configured to correspond to the anterior teeth of tooth T1. For example, the guide plate 20 includes two spaced-apart support portions 30, with each support portion 30 corresponding to two central incisors, but this is not a limitation. The support portion 30 extends generally along the sagittal direction.

[0089] Optionally, the first support surface 31 has a first width W1 along the mesiodistal direction, and the lingual surface A1 of the first tooth T11 has a second width W2 along the mesiodistal direction, with the ratio of the first width W1 to the second width W2 ranging from 1 / 4 to 3 / 4.

[0090] Here, the first tooth T11 can be defined according to the actual position of the first support surface 31. For example, when the first support surface 31 corresponds to the lingual surface A1 of a tooth, that is, when the first support surface 31 is set for a tooth and does not extend to the interdental space, the first tooth T11 is the tooth corresponding to the first support surface 31.

[0091] When the first support surface 31 corresponds to the adjacent tooth gap, the first tooth T11 is either the left or right tooth of the first support surface 31.

[0092] Specifically, when the first support surface 31 is positioned at the middle position of the central incisor, the first tooth T11 is that central incisor. When the first support surface 31 is positioned at the interdental space between the central incisor and the lateral incisor, the first tooth T11 can be either the central incisor or the lateral incisor.

[0093] In the mesiodistal direction, the proportion of the first support surface 31 at the corresponding first tooth T11 is approximately 1 / 4 to 3 / 4, which can effectively improve the support effect of the lingual surface A1 of the first tooth T11 on the first support surface 31.

[0094] Optionally, the working surface 21 includes an end edge 212 that is away from the first surface B1 of the orthodontic body 10, and there is a gap between the support portion 30 and the end edge 212, that is, the support portion 30 does not extend to the end edge 212 of the working surface 21.

[0095] The front edge 211 and the end edge 212 are located at the front and rear ends of the working surface 21, respectively. The front edge 211 and the end edge 212 can be connected to each other to form the periphery outline of the working surface 21.

[0096] Optionally, the orthodontic appliance body 10 and the guide plate 20 are integrally formed, that is, the orthodontic appliance body 10, the working surface 21, and the support part 30 can all be integrally formed. For example, the orthodontic appliance body 10 and the guide plate 20 can be integrally formed by hot pressing molding process, or the orthodontic appliance body 10 and the guide plate 20 can also be integrally formed by 3D printing process.

[0097] Optional, combined Figure 5 The guide plate 20 also includes a reinforcing part 24, which connects to the end edge 212 of the first surface B1 of the working surface 21 that is away from the body of the aligner 10. The reinforcing part 24 is bent downward relative to the working surface 21. In the rear view of the invisible aligner 100, the reinforcing part 24 is roughly arched.

[0098] The reinforcing part 24 can provide support for the working surface 21, further preventing the guide plate 20 from collapsing or deforming during the engagement process.

[0099] The reinforcing part 24 is roughly arched, which increases the force-bearing area on both sides of the reinforcing part 24, so that the biting force F on the action surface 21 can be dispersed to both sides, further preventing the guide plate 20 from collapsing or deforming during the biting process.

[0100] Specifically, the reinforcing part 24 has a sheet-like structure and is generally perpendicular to the working surface 21, but is not limited to this.

[0101] The reinforcing part 24 includes two support legs 241 connecting the two ends of the end edge 212 and a connecting beam 242 connecting the two support legs 241. The side of the two support legs 241 away from the connecting beam 242 is connected to the orthodontic body 10. The support legs 241 have a first height H1 in the vertical direction, and the first height H1 decreases in a first direction Y, where the first direction Y is the direction in which the corresponding support leg 241 faces the connecting beam 242. The connecting beam 242 has a second height H2 in the vertical direction, and the second height H2 remains constant and is equal to the minimum value of the first height H1.

[0102] The support legs 241 on the left side of the reinforcing section 24 converge towards the right, and the support legs 241 on the right side converge towards the left. The two support legs 241 are connected by a connecting beam 242 of constant height, thus forming an arched reinforcing section 24. Compared to a reinforcing section 24 of constant height, the arched reinforcing section 24 can reduce the mid-span (i.e., reduce the length of the connecting beam 242 along the first direction Y) and increase the load-bearing area of ​​the support legs 241 on both sides, thereby achieving a better support effect on the working surface 21.

[0103] When the action surface 21 supports the opposing tooth T2, the middle position of the action surface 21 is the main force-bearing position, that is, the occlusal force F is mainly applied to the middle position of the action surface 21. The occlusal force F will be more dispersed to the support leg 241, which has a larger force-bearing area. Since the support leg 241 is connected to the appliance body 10, and the appliance body 10 is in close contact with the lingual surface A1 of the tooth, the occlusal force F can be further dispersed to the tooth T1.

[0104] This specific example demonstrates how setting an arched reinforcing part 24 can effectively disperse the interlocking force F acting on the middle position of the action surface 21, thereby reducing the amount of deformation at the middle position of the action surface 21.

[0105] Combination Figures 6 to 9 This is a schematic diagram of the invisible aligner 100 in the second specific example. For ease of explanation, the same or similar structures in different specific examples are numbered the same or similarly, and so on.

[0106] The main difference between the support part 30 in the second specific example and the support part 30 in the first specific example is that the support part 30 is positioned differently and the object wrapped by the first support surface 31 is different.

[0107] In a second specific example, the first support surface 31 is used to cover the non-crown surface. For example, the first support surface 31 can be used to cover the gingival region A4, or the first support surface 31 can be used to cover the palatal tissue A5, or the first support surface 31 can be used to cover both the gingival region A4 and the palatal tissue A5 simultaneously.

[0108] The plurality of enclosure surfaces 32 include a second enclosure surface 32b and a third enclosure surface 32c. The second enclosure surface 32b is connected to the proximal side of the first support surface 31 and extends to the working surface 21. The third enclosure surface 32c is connected to the distal side of the first support surface 31 and extends to the working surface 21.

[0109] The first support surface 31, the second enclosure surface 32b, and the third enclosure surface 32c are connected to form a support portion 30. The first support surface 31, the second enclosure surface 32b, and the third enclosure surface 32c form a recessed structure S2. The recessed structure S2 extends upward and penetrates the working surface 21. The recessed structure S2 can be regarded as being formed by a portion of the working surface 21 being recessed downward.

[0110] The second wall surface 32b is approximately perpendicular to the first support surface 31, and the third wall surface 32c is approximately perpendicular to the first support surface 31.

[0111] The working surface 21 includes an end edge 212 that is away from the body of the orthodontic appliance 10, and a second wall surface 32b and a third wall surface 32c extend to the end edge 212. The support portion 30 extends to the end edge 212 of the working surface 21, and there is no gap between the support portion 30 and the end edge 212.

[0112] Referring to the above description, the main difference between the support portion 30 of the second specific example and the support portion 30 of the first specific example is that the support portion 30 of the second specific example includes a first support surface 31 and two surrounding wall surfaces, and the end of the support portion 30 away from the first surface B1 is an open end; the support portion 30 of the first specific example includes a first support surface 31 and three surrounding wall surfaces, and the end of the support portion 30 away from the first surface B1 is a closed end.

[0113] In this specific example, the guide plate 20 also includes a connecting surface 22 that connects to the end edge 212 and extends downward, and the recessed structure S2 also includes an opening located on the connecting surface 22.

[0114] The orthodontic appliance body 10 includes a first surface B1 that covers the lingual surface A1 of the teeth and a second surface B4 that connects to the first surface B1. A recess S is formed between the second surface B4 and the first surface B1. The working surface 21 is connected to the second surface B4. The recessed structure S2 also includes an opening located on the second surface B4.

[0115] The second surface B4 and the connecting surface 22 can be considered as two surfaces that respectively connect the front edge 211 and the rear edge 212 of the working surface 21. The recessed structure S2 includes an opening located on the connecting surface 22, that is, the recessed structure S2 extends backward in the sagittal direction and penetrates the connecting surface 22. The recessed structure S2 includes an opening located on the second surface B4, that is, the recessed structure S2 extends forward in the sagittal direction and penetrates the second surface B4. The recessed structure S2 also includes openings located on the working surface 21, the connecting surface 22, and the second surface B4. The recessed structure S2 is a through groove that extends forward and backward in the sagittal direction and extends upward.

[0116] Optionally, the end of the connecting surface 22 away from the terminal edge 212 is a bent surface, which abuts against the non-crown surface. The connecting surface 22 abuts against both the non-crown surface and the functional surface 21 to support the functional surface 21.

[0117] The connecting surface 22 may not abut against the non-crown surface. The connecting surface 22 may be similar to the reinforcing part 24 in the first specific example to enhance the rigidity of the working surface 21. The specific form of the connecting surface 22 may also refer to the reinforcing part 24 in the first specific example, but is not limited thereto.

[0118] In this specific example, the first support surface 31 can be an anatomical surface that matches the non-crown surface, and the first wall surface 32a and the second wall surface 32b can be planes.

[0119] The non-crown surface can effectively support the second and third perimeter walls 32b and 32c through the first support surface 31, thereby increasing the stiffness of the second and third perimeter walls 32b and 32c. The second and third perimeter walls 32b and 32c can then be used to support the action surface 21, thereby increasing the stiffness of the action surface 21.

[0120] When the action surface 21 is subjected to the occlusal force F applied by the opposing tooth T2, the occlusal force F will be transmitted to the second wall surface 32b and the third wall surface 32c. The second wall surface 32b and the third wall surface 32c have high stiffness and can effectively disperse the occlusal force F on the action surface 21 without deforming themselves.

[0121] Combination Figure 9 The occlusal force F acting on the action surface 21 can also be transmitted to the second and third wall surfaces 32b and 32c. Both the second and third wall surfaces 32b and 32c are perpendicular to the first support surface 31, and a first component force F1, approximately perpendicular to the first support surface 31 (i.e., approximately perpendicular to the non-crown surface), can be formed at the second and third wall surfaces 32b and 32c. This first component force F1 can be dispersed from the second and third wall surfaces 32b and 32c to the non-crown surface, thereby reducing the deformation of the action surface 21.

[0122] In this specific example, the body 10 of the aligner also includes a crossbeam 40 connecting the first surface B1 and the fourth surface B2. The crossbeam 40 is located approximately within the recess S to enhance the rigidity of the entire invisible aligner 100.

[0123] The working surface 21 may have a semi-anatomical region 213. For a detailed description of the semi-anatomical region 213, please refer to the first specific example, which will not be repeated here.

[0124] In this specific example, the guide plate 20 has a continuous structure in the mesiodistal direction, and its extension in the mesiodistal direction covers at least a continuous number of anterior teeth. The first support surface 31 has a first width W1 along the mesiodistal direction, and the lingual surface A1 of the first tooth T11 has a second width W2 along the mesiodistal direction. The ratio of the first width W1 to the second width W2 ranges from 1 / 4 to 3 / 4. The appliance body 10 and the guide plate 20 are integrally formed.

[0125] Further explanations for the second specific example can be found in the first specific example, and will not be repeated here.

[0126] Combination Figures 10 to 12 This is a schematic diagram of the invisible aligner 100 in the third specific example.

[0127] The main difference between the third specific example and the second specific example is that the recessed structure S2 in the third specific example does not extend to the connecting surface 22.

[0128] In this specific example, the plurality of enclosure surfaces 32 also include a first enclosure surface 32a that connects to the lower edge 311 of the first support surface 31. The first enclosure surface 32a connects to the lower edge 311 of the first support surface 31 and bends upward to connect to the working surface 21. The support portion 30 in this specific example includes a first support surface 31 and three enclosure surfaces. The recessed structure S2 in this specific example is a semi-through groove that extends forward in the sagittal direction, does not extend backward, and extends upward.

[0129] A cavity S3 is formed between the fourth wall surface 32b and the connecting surface 22. In the third specific example, the first support surface 31 extends in the sagittal direction less than the first support surface 31 extends in the sagittal direction in the second specific example.

[0130] In other specific examples, the recessed structure S2 may be a semi-through groove that is not through in the forward direction, is through in the backward direction, and is through in the top direction in the sagittal direction. Alternatively, the recessed structure S2 may be a semi-through groove that is not through in the forward direction, is not through in the backward direction, and is through in the top direction in the sagittal direction.

[0131] Combination Figures 13 to 15 This is a schematic diagram of the invisible aligner 100 in the fourth specific example.

[0132] The main difference between the fourth specific example and the third specific example is that the connecting surface 22 in the fourth specific example does not extend to the palatal tissue A5, and the connecting surface 22 does not serve as the supporting surface 21.

[0133] The connecting surface 22 in this specific example can enhance the rigidity of the working surface 21 by being similar to the reinforcing part 24 in the first specific example.

[0134] Optionally, in the second to fourth specific examples, the appliance body 10 includes a recess S, but is not limited thereto. In the second to fourth specific examples, the recess S can also be omitted, so that the working surface 21 is directly connected to the first surface B1. In this case, the first support surface 31 can extend to the lingual surface A1 of the tooth, and the first support surface 31 simultaneously covers the lingual surface A1 of the tooth and the non-crown surface.

[0135] In the second implementation, combined Figure 16 and Figure 17 The functional surface 21 includes an end edge 212 that is away from the body of the orthodontic appliance 10, the first support surface 31 is used to wrap the palatal tissue, and the wall surface 32 connects the first support surface 31 and the end edge 212.

[0136] This implementation eliminates the recessed structure S2 in the first implementation, forming only a wall surface 32 and a first support surface 31 at the end edge 212 of the working surface 21. The wall surface 32 and the first support surface 31 are connected to form an "L"-shaped structure.

[0137] The first support surface 31 and the palatal tissue A5 are in surface-to-surface contact, which avoids damage to the palatal tissue. Surface-to-surface contact provides a larger contact area and helps to disperse the force.

[0138] Optionally, the enclosure surface 32 is generally perpendicular to the working surface 21, and the first support surface 31 is bent outward relative to the enclosure surface 32, but this is not a limitation.

[0139] Combination Figure 18 One embodiment of this utility model also provides an invisible aligner assembly 300, including an invisible aligner 100 and an opposing invisible aligner 200 that matches the opposing tooth T2, with the working surface 21 used to support the opposing invisible aligner 200.

[0140] The opposing clear aligner 200 includes an opposing cavity S4 that accommodates the opposing tooth T2. When the upper and lower jaws are in occlusion, the action surface 21 supports the portion of the opposing clear aligner 200 that is in close contact with the anterior tooth region of the opposing tooth T2.

[0141] In other embodiments, the occlusal clear aligner 200 may also include other structures that mate with the action surface 21. For example, the occlusal clear aligner 200 includes a guide plate that protrudes from the opposing tooth T2 and abuts against the action surface 21.

[0142] Combination Figure 19 One embodiment of this utility model also provides an invisible aligner assembly 400, including a plurality of invisible aligners 100, wherein the plurality of invisible aligners 100 satisfy at least one of the following variation trends: The support portion 30 includes a first support surface 31 and a first surrounding wall surface 32a. The first support surface 31 is in close contact with the dental and jaw tissues, and the first surrounding wall surface 32a connects the lower edge 311 of the first support surface 31 and the working surface 21. The first surrounding wall surface 32a and the first support surface 31 have a first included angle α1. The first included angle α1a of the clear aligner 100a in the Nth orthodontic step is greater than the first included angle α1b of the clear aligner 100b in the N+Mth orthodontic step. The working surface 21 has a maximum length L in the sagittal direction, and the maximum length La of the clear aligner 100a in the Nth orthodontic step is greater than the maximum length Lb of the clear aligner 100b in the N+Mth orthodontic step.

[0143] This embodiment adapts to different orthodontic steps by changing the first included angle α1 or the maximum length L. It can provide a clear aligner 100 with appropriate rigidity and size for different orthodontic steps, and can avoid excessive interference between the clear aligner 100 and the teeth, thereby improving the user's wearing comfort.

[0144] Specifically, the multiple invisible aligners 100 include a first invisible aligner 100a corresponding to the Nth orthodontic step and a second invisible aligner 100b corresponding to the N+Mth orthodontic step, where N and M are both positive integers.

[0145] For the same first tooth T11, the first included angle α1a of the first clear aligner 100a is greater than the first included angle α1b of the second clear aligner 100b. That is, as the treatment progresses, the first included angle α1 between the first wall surface 32a and the first support surface 31 tends to decrease to adapt to the current degree of open bite of the upper and lower jaws. This embodiment does not limit the first included angle α1 to gradually decrease as the treatment progresses; it only needs to ensure that the first included angle α1a of the Nth treatment step is greater than the first included angle α1b of the N+Mth treatment step, which can be determined according to the actual situation.

[0146] The maximum length La of the first clear aligner 100a is greater than the maximum length Lb of the second clear aligner 100b. That is, as the treatment progresses, the maximum length L of the working surface 21 in the sagittal direction tends to decrease to adapt to the current degree of open bite of the upper and lower jaws. This embodiment does not limit the maximum length L to gradually decrease with the progress of the treatment steps, but only needs to ensure that the maximum length La of the Nth treatment step is greater than the maximum length Lb of the N+Mth treatment steps, which can be determined according to the actual situation.

[0147] In summary, when the support portion 30 simultaneously abuts against the action surface 21 and the dental tissue, the support portion 30 can disperse the force exerted by the orthodontic component on the action surface 21 to the dental tissue, effectively preventing deformation or collapse of the action surface 21.

[0148] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0149] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An invisible aligner, characterized in that, The orthodontic appliance includes a connected appliance body and a guide plate. The appliance body forms a cavity to accommodate teeth. The guide plate is located on the lingual surface of the appliance body. The guide plate includes an action surface and a support portion. The action surface is connected to the appliance body and is used to support the area to be treated. The support portion abuts against the action surface and the dentition. The dentition includes the lingual surface and / or non-crown surface of the teeth. The non-crown surface is an extension of the lingual surface of the teeth toward the palate.

2. The invisible aligner according to claim 1, characterized in that, The area to be treated is the opposing teeth or tongue, and the non-crown surface includes the gingival region and / or palatal tissue.

3. The invisible aligner according to claim 1, characterized in that, The active surface is configured to support the opposing teeth when in orthodontic condition.

4. The invisible aligner according to claim 1, characterized in that, The orthodontic appliance body includes a first surface that covers the lingual surface of the teeth, and the functional surface is connected to the first surface; or, the orthodontic appliance body includes a first surface that covers the lingual surface of the teeth and a second surface that is connected to the first surface, with a recess formed between the second surface and the first surface, and the functional surface is connected to the second surface.

5. The invisible aligner according to claim 4, characterized in that, At least part of the first surface is in close contact with the lingual surface of the tooth.

6. The invisible aligner according to claim 1, characterized in that, The support includes a first support surface and at least one surrounding wall surface. The first support surface is in close contact with the dental tissue, and the surrounding wall surface connects the first support surface and the working surface.

7. The invisible aligner according to claim 6, characterized in that, The support includes a first support surface and a plurality of surrounding wall surfaces, which together form a recessed structure. The recessed structure includes an opening at least located on the working surface.

8. The invisible aligner according to claim 7, characterized in that, The orthodontic appliance body includes a first surface that covers the lingual surface of the teeth, an active surface that connects to the first surface, and a first support surface that covers the lingual surface of the teeth, or the first support surface that covers the lingual surface of the teeth and the gingival region.

9. The invisible aligner according to claim 8, characterized in that, The plurality of enclosure surfaces include a first enclosure surface, which connects the lower edge of the first support surface and the functional surface.

10. The invisible aligner according to claim 9, characterized in that, The plurality of enclosure surfaces also include a second enclosure surface and a third enclosure surface, the second enclosure surface connecting the first support surface and the proximal side of the first enclosure surface and extending to the working surface, and the third enclosure surface connecting the first support surface and the distal side of the first enclosure surface and extending to the working surface.

11. The invisible aligner according to claim 10, characterized in that, The second enclosure surface is substantially perpendicular to the first support surface and the first enclosure surface, and the third enclosure surface is substantially perpendicular to the first support surface and the first enclosure surface.

12. The invisible aligner according to claim 8, characterized in that, The working surface includes an end edge that is away from the body of the orthodontic appliance, and there is a gap between the support and the end edge.

13. The invisible aligner according to claim 7, characterized in that, The first support surface is used to enclose the non-crown surface, and the plurality of surrounding surfaces include a second surrounding surface and a third surrounding surface. The second surrounding surface is connected to the mesial side of the first support surface and extends to the functional surface, and the third surrounding surface is connected to the distal side of the first support surface and extends to the functional surface.

14. The invisible aligner according to claim 13, characterized in that, The working surface includes an end edge that is away from the body of the orthodontic appliance, and the second and third enclosure surfaces extend to the end edge.

15. The invisible aligner according to claim 13, characterized in that, The working surface includes an end edge that is away from the body of the orthodontic appliance, the guide plate also includes a connecting surface that connects to the end edge and extends downward, and the recessed structure also includes an opening located on the connecting surface.

16. The invisible aligner according to claim 15, characterized in that, The end of the connecting surface away from the end edge is a bent surface, and the bent surface abuts against the non-crown surface.

17. The invisible aligner according to claim 13, characterized in that, The orthodontic appliance body includes a first surface that covers the lingual surface of the teeth and a second surface that connects to the first surface. A recess is formed between the second surface and the first surface. The working surface is connected to the second surface. The recessed structure also includes an opening located on the second surface.

18. The invisible aligner according to claim 13, characterized in that, The orthodontic appliance body includes a first surface that covers the lingual surface of the teeth, an active surface that connects to the first surface, and a first support surface that covers the lingual surface and non-crown surface of the teeth.

19. The invisible aligner according to any one of claims 7-18, characterized in that, The first support surface has a first width along the mesiodistal direction, and the lingual surface of the first tooth has a second width along the mesiodistal direction. The ratio of the first width to the second width is in the range of 1 / 4 to 3 / 4. When the first support surface corresponds to the lingual surface of the tooth, the first tooth is the tooth corresponding to the first support surface. When the first support surface corresponds to the interdental space, the first tooth is the tooth on the left or right side of the first support surface.

20. The invisible aligner according to claim 6, characterized in that, The functional surface includes an end edge that is away from the body of the orthodontic appliance, the first support surface is used to wrap the palatal tissue, and the wall surface connects the first support surface and the end edge.

21. The invisible aligner according to claim 20, characterized in that, The enclosure surface is substantially perpendicular to the working surface, and the first supporting surface is bent outward relative to the enclosure surface.

22. The invisible aligner according to claim 1, characterized in that, The working surface extends approximately in the horizontal direction.

23. The invisible aligner according to claim 1, characterized in that, The guide plate has a continuous structure in the mesiodistal direction, and the extension range of the guide plate in the mesiodistal direction covers at least a continuous number of anterior teeth.

24. The invisible aligner according to claim 1, characterized in that, The orthodontic appliance body and the guide plate are integrally formed.

25. A set of invisible orthodontic appliances, characterized in that, This includes multiple clear aligners as described in any one of claims 1-24, wherein the multiple clear aligners satisfy at least one of the following trends: The support includes a first support surface and a first surrounding wall surface. The first support surface is in close contact with the dental and jaw tissues. The first surrounding wall surface connects the lower edge of the first support surface and the working surface. The first surrounding wall surface and the first support surface have a first included angle. The first included angle of the clear aligner in the Nth orthodontic step is greater than the first included angle of the clear aligner in the N+Mth orthodontic step. The working surface has a maximum length in the sagittal direction, and the maximum length of the clear aligner in the Nth orthodontic step is greater than the maximum length of the clear aligner in the N+Mth orthodontic step. Where N and M are both positive integers.

26. A set of invisible orthodontic appliances, characterized in that, Includes the clear aligner as described in any one of claims 1-24, and the opposing clear aligner that matches the opposing teeth, wherein the working surface is used to support the opposing clear aligner.

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