Orthodontic correction system and treatment method using same

Abstract

An orthodontic appliance system (10) includes an appliance (12). The appliance (12) is provided with a shell (22), and the shell (22) comprises a first pair of cavities (24) and a second pair of cavities (24). Each cavity (24) of the first pair of cavities is for receiving an anterior tooth (56). Each cavity (24) of the second pair of cavities is for receiving a posterior tooth (64). The housing (22) includes an intermediate cavity (24) between a first cavity (24) of the first pair of cavities (24) and a second cavity (24) of the second pair of cavities (24). Each intermediate cavity (24) is for receiving a tooth between an anterior tooth (56) and a posterior tooth (64). The intermediate cavity (24) may be larger in size relative to the teeth. The housing (22) has a plurality of walls (32, 34, 36, 40) that define a cavity (24). At least one wall (32, 34, 36, 40) of the intermediate cavity (24) contains a rigidity enhancing region (42) extending from a first cavity (24) to a second cavity (24) of the pair of cavities (24). The region (42) may be a structure such as a stiffening beam (50).

Description

[0001] Cross-reference of related applications

[0002] This application claims priority to U.S. Provisional Patent Application No. 63 / 488,925, filed March 7, 2023, the contents of which are incorporated herein by reference. Technical Field

[0003] The present invention generally relates to orthodontic appliances for orthodontic treatment, and more specifically, to orthodontic appliance systems comprising one or more orthodontic appliances, and methods of using orthodontic appliances and systems. Background Technology

[0004] Orthodontics is a technique that corrects malocclusion by applying forces to the teeth. Typically, malocclusion treatment requires the use of orthodontic appliances, which apply corrective forces to the teeth. Over time, these forces move the teeth into their orthodontic correct positions. Malocclusions can be classified based on the position of the patient's upper and lower molars. To achieve orthodontic treatment, certain types of malocclusion may require the use of specialized appliances at one or more stages of treatment.

[0005] One method of applying corrective force is using orthodontic appliances called aligners. These appliances are provided as a series of removable devices that progressively move the patient's teeth from their initial position to their orthodontic ideal position through gradual adjustments. Patients receiving aligner treatment can remove and wear these appliances themselves. When one set of appliances moves the teeth to or near their target position, the patient then uses the next set of appliances in the series, according to the treatment plan developed by their clinician.

[0006] When fabricating orthodontic appliances, clinicians first obtain a computer model of the patient's dentition. This model can be generated by taking dental impressions: first, dental impressions are made, then the impressions are scanned and entered into a computer system. Alternatively, data can be generated by directly scanning the patient's teeth using an intraoral scanner. Regardless of the method used, the final result is a computer model of the patient's dentition constructed using the scanned data.

[0007] Once a computer model is obtained, orthodontists can adjust individual teeth within the model to determine the ideal final position for each tooth, thus achieving the goal of orthodontic treatment. Multiple computer models can then be generated, each corresponding to the initial position of the dentition, one or more intermediate positions, or the desired final position. Clinicians plan the movement of the teeth from the initial position through various intermediate positions to the final desired position. This predetermined movement process is called a treatment plan.

[0008] Because some teeth need to be moved more than a single appliance can achieve, treatment plans are typically divided into multiple progressive movement phases. Each phase of tooth movement is usually achieved using a single appliance. Therefore, each phase corresponds to a computer model of the patient's teeth in a specific orthodontic position.

[0009] Once a treatment plan containing a series of corresponding computer models is designed based on the stages of tooth movement, a series of orthodontic appliances corresponding to these models can be manufactured. First, a mold is made based on each model, and then the appliance is manufactured based on the mold. In this way, the appliance reflects the expected position of the patient's teeth at a particular stage of treatment. The manufacture of each appliance in a series typically involves: constructing a mold based on the patient's dental data for a specific treatment stage in the treatment plan, and then shaping a plastic sheet on the mold. After shaping, excess material from the plastic sheet is trimmed to produce the appliance. The trimming process can be performed using computer numerical control (CNC) milling or other computer-controlled cutting systems.

[0010] Class II malocclusion, for example, is a specific type of malocclusion requiring specialized appliances. It is characterized by the maxillary molars and anterior teeth protruding forward relative to the mandible. This relative position of the teeth can lead to soft tissue problems, such as abnormal lip closure. Specialized appliances for correcting Class II malocclusion include the Carrillo Dynamic Appliance. This is a metal appliance attached to the maxilla. This appliance generates the force required for tooth movement through a spring mechanism. By applying forces in two positions in the maxilla, Class I occlusion and mandibular anterior repositioning are achieved. In other words, the Carrillo Dynamic Appliance, combined with the applied forces, can rotate and straighten the first molars while moving the canines or premolars to their correct orthodontic positions.

[0011] Another specialized orthodontic appliance for correcting Class II malocclusion includes the double-pawl appliance. This appliance consists of a pair of devices: a maxillary device and a mandibular device. These devices must be worn simultaneously. Each device includes an occlusal ramp. When the appliances are worn, the occlusal ramps correspond to each other. When the patient closes their jaw, the opposing occlusal ramps interact. This forced interaction guides the mandible into a more forward occlusal position. In other words, the interaction of the occlusal ramps results in relative movement of the jawbone.

[0012] While these specialized appliances are generally effective, problems remain when they are used in conjunction with other orthodontic treatments. Currently, there is a pressing need for improved orthodontic appliance systems to streamline the orthodontic process and increase treatment efficiency and predictability during appliance treatment. Summary of the Invention

[0013] This invention overcomes the defects and shortcomings of previously known orthodontic systems (including orthodontic appliances and accessories) for orthodontic treatment. While the invention will be described in conjunction with certain embodiments, it should be understood that the invention is not limited to these embodiments. Rather, the invention encompasses all alternatives, modifications, and equivalents that may be included within the spirit and scope of the invention.

[0014] According to the principles of the present invention, an orthodontic appliance system for orthodontic treatment of a patient's teeth includes: a first appliance comprising a housing having a plurality of cavities. The housing is visually divided into a first side and a second side by a midline. The housing includes: (i) a first pair of cavities. Two cavities in the first pair of cavities are located on the first side and the second side, respectively, and are used to receive anterior teeth. The housing includes: (ii) a second pair of cavities. Two cavities in the second pair of cavities are located on the first side and the second side, respectively, and are used to receive posterior teeth. The housing further includes: (iii) at least one intermediate cavity on each of the first and second sides, located between a first cavity of the first pair of cavities and a second cavity of the second pair of cavities; each intermediate cavity is used to receive a tooth located between an anterior tooth and a posterior tooth. The housing has a plurality of walls defining the plurality of cavities, and at least one wall of the intermediate cavity includes a rigid reinforcing region extending from the first cavity to the second cavity on each of the first and second sides.

[0015] In one embodiment, the rigid reinforcement region is a reinforcing beam integral with at least one wall, and these reinforcing beams have a non-tooth shape.

[0016] In one embodiment, the reinforcing beam includes a first adjacent portion located between a first cavity and at least one intermediate cavity, and a second adjacent portion located between at least one intermediate cavity and a second cavity.

[0017] In one embodiment, the reinforcing beam has a U-shaped cross-section.

[0018] In one embodiment, (i) at least one of the plurality of walls of each cavity in the first pair of cavities includes a first receiving portion leading to the corresponding cavity; (ii) at least one of the plurality of walls of each cavity in the second pair of cavities includes a second receiving portion leading to the corresponding cavity; and (iii) at least one of the plurality of walls of each cavity in the pair of intermediate cavities is used to space away from the tooth surface when the appliance is coupled to the patient's teeth.

[0019] In one embodiment, at least one of the plurality of walls of each cavity in the first pair of cavities, and at least one of the plurality of walls of each cavity in the second pair of cavities, is a lip wall.

[0020] In one embodiment, the first receiving portion is at the foremost end of the rigid reinforcement region, and the second receiving portion is at the rearmost end of the rigid reinforcement region.

[0021] In one embodiment, the first receiving portion adopts an integrally formed hook-shaped structure designed for mounting elastic elements.

[0022] In one embodiment, at least one of the multiple walls of each cavity in the first pair of cavities has a cutout for receiving a button.

[0023] In one embodiment, the system further includes: a first attachment fixed to each anterior tooth, the attachment being receptacle-like in a corresponding receiving slot of a first receiving portion. In one embodiment, each first attachment is prismatic in shape, its longitudinal axis aligned with the long axis of the posterior tooth. In another embodiment, the system further includes: a second attachment fixed to each posterior tooth, the attachment being receptacle-like in a corresponding receiving slot of a second receiving portion. In one embodiment, each second attachment is prismatic in shape, its longitudinal axis aligned with the long axis of the posterior tooth.

[0024] In one embodiment, the cavity of at least one intermediate cavity is larger than the tooth size in at least one dimension.

[0025] In one embodiment, the system further includes a second orthodontic appliance. The second orthodontic appliance includes a housing with multiple cavities, visually divided into a first side and a second side by a midline. The housing includes a pair of cavities, located on opposite sides of the midline. Each cavity is used to receive a posterior tooth. The housing has multiple walls that define the multiple cavities. One of the multiple walls of each cavity in each pair of cavities has a receiving portion that opens toward the interior of the cavity for mounting orthodontic attachments. In one embodiment, the system further includes a second orthodontic appliance. The second orthodontic appliance includes a housing with multiple cavities, divided into a first side and a second side by a midline. The housing includes a pair of cavities. There is one cavity on each side of the midline, each cavity being used to receive a posterior tooth. The housing has multiple walls that define the pair of cavities, and one of the multiple walls of each cavity in each pair of cavities has an incision.

[0026] In one embodiment, the housings of both the first and second orthodontic appliances include a pair of stops. There is one stop on each side of the midline, and these stops extend along the occlusal surface such that the stops on the first appliance contact the stops on the second appliance. When the first and second appliances are coupled to the patient's teeth, the paired stops are used to promote mandibular advancement.

[0027] According to one aspect of the present invention, a method for orthodontic treatment using the system of any of the above-disclosed embodiments is provided.

[0028] In one embodiment, an orthodontic appliance system for orthodontic treatment of a patient's teeth includes an appliance. It includes a housing having multiple cavities, the housing being divided into a first side and a second side by a midline, the housing including: (i) a first pair of cavities, each of the first pair of cavities for receiving a maxillary canine; (ii) a second pair of cavities, each of the second pair of cavities for receiving a maxillary first molar; and (iii) two cavities located between a first cavity in the first pair of cavities and a second cavity in the second pair of cavities on the first and second sides, each cavity for receiving a premolar. The housing has multiple walls defining the multiple cavities, and at least one labial wall of each of the two cavities is provided with a reinforcing beam extending from the first cavity on the first and second sides to the second cavity.

[0029] In one embodiment, each reinforcing beam is non-tooth-shaped.

[0030] In one embodiment, the reinforcing beam includes: (i) a first adjacent portion located between the first cavity and the two cavities; (ii) a second adjacent portion located between the two cavities; and (iii) a third adjacent portion located between the other of the two cavities and the second cavity.

[0031] In one embodiment, each reinforcing beam has a U-shaped cross-section.

[0032] In one embodiment, each cavity located between the first cavity and the second cavity is larger than the size of its respective premolar in at least one dimension. In one embodiment, at least one dimension is used to space the labial wall of the at least one cavity located between the first cavity and the second cavity from its respective premolar.

[0033] According to one aspect of this aspect, a method of treating a patient using an orthodontic appliance system is provided. The method includes: placing a first appliance onto the teeth of the patient's maxilla. In one embodiment, the first appliance includes a housing with multiple cavities, visually divided into a first side and a second side by a midline. The housing includes: (i) a first pair of cavities. Two cavities in the first pair are located on the first side and the second side, respectively, and each cavity in the first pair accommodates a corresponding anterior tooth. The housing includes: (ii) a second pair of cavities. Two cavities in the second pair are located on the first side and the second side, respectively, and each cavity in the second pair accommodates a corresponding posterior tooth. The housing includes: (iii) at least one intermediate cavity on each of the first and second sides, located between a first cavity of the first pair and a second cavity of the second pair. At least one of the cavities accommodates a tooth located between a corresponding anterior and a posterior tooth. The housing has multiple walls defining multiple of the aforementioned cavities, and at least one wall of an intermediate cavity includes a rigid reinforcement region extending from the first cavity to the second cavity on each of the first and second sides. The method includes applying force to each cavity in the first pair of cavities and / or each anterior tooth. Each rigid reinforcement region transmits at least a portion of the applied force to each posterior tooth.

[0034] In one embodiment, the method further includes securing the attachment to each corresponding anterior tooth in the maxilla. Applying force to each cavity in the first pair of cavities and / or each anterior tooth includes applying force at the attachment of each anterior tooth.

[0035] In one embodiment, the housing of the first orthodontic appliance includes a pair of receptacles. Each of the receptacles opens into a corresponding first cavity and is located at the foremost end of a rigidity-enhancing region. During wear of the first orthodontic appliance, each of the receptacles receives a corresponding attachment. Applying force to the attachment at each anterior tooth includes applying force to each receptacle.

[0036] In one embodiment, the method further includes securing the attachment to each corresponding maxillary posterior tooth. Applying force to each cavity in the first pair of cavities and / or each anterior tooth includes transmitting a portion of the applied force through each rigid reinforcement region to the attachment on each corresponding posterior tooth.

[0037] In one embodiment, the housing of the first orthodontic appliance includes a pair of receptacles, each of which opens into a corresponding second cavity and is located at the rear end of a rigid reinforcement region. During wear of the first orthodontic appliance, each receptacle leading to the corresponding second cavity receives a corresponding attachment on a posterior tooth.

[0038] In one embodiment, the method further includes securing the attachment to at least two teeth in the patient's mandible. Force is applied to each cavity in the first pair of cavities and / or each anterior tooth, including applying force to each attachment in the patient's mandible.

[0039] In one embodiment, the method further includes placing a second orthodontic appliance onto the patient's lower jaw teeth.

[0040] In one embodiment, applying force includes connecting one end of the elastic element to the first pair of cavities and / or each anterior tooth. Attached Figure Description

[0041] The accompanying drawings form part of this specification, illustrating embodiments of the invention and, together with the detailed description given below, serving to explain various aspects of the invention.

[0042] Figure 1 This is a perspective view of an exemplary orthodontic appliance system used for orthodontic treatment of a patient.

[0043] Figure 2 yes Figure 1 The exemplary orthodontic appliance system shown is a perspective view of the maxillary appliance relative to the patient's maxilla.

[0044] Figure 3A yes Figure 1 The cross-sectional view of the maxillary appliance shown is taken along section line 3A-3A.

[0045] Figure 3B yes Figure 1 The maxillary appliance shown is along with Figure 3A The cross-sectional view shown, taken from a section line similar to the one shown, illustrates an exemplary embodiment of the present invention.

[0046] Figure 3C yes Figure 1 The cross-sectional view of the maxillary appliance shown is taken along section line 3C-3C.

[0047] Figure 4 yes Figure 1 A perspective view of the mandibular appliance of an exemplary orthodontic appliance system relative to the patient's mandible.

[0048] Figure 5A and Figure 5B The images show a front view and a plan view of the patient's digital model of teeth, which has one or more interconnected attachments extending from a canine to the first molar, including attachments on the canine and attachments on the first molar. Figure 5B (Only the attachments on one side of the jawbone are shown in the image).

[0049] Figure 5C and Figure 5D Showing with Figure 5Aand Figure 5B The diagram shows the front and plan views of a digital model of the patient's dental mold corresponding to the model teeth; this digital model is built into the mold model, on which the orthodontic appliance will be molded for use. Figure 5A and Figure 5B The teeth shown.

[0050] Figure 6A , Figure 6B , Figure 6C and Figure 6D It is a series of digital tooth models, showing in Figure 5A The attached image shows a model of the progression of treatment through the force generated by the elastic element (not shown) under the action of the attached accessory (indicated by arrows).

[0051] Figure 7A This is a schematic diagram of a virtual model of a mold used to manufacture an orthodontic appliance system according to one embodiment of the present invention.

[0052] Figure 7B , Figure 7C and Figure 7D Is using Figure 7A The image shows a clinical case photo of the orthodontic treatment system.

[0053] Figure 8A It is a virtual model illustrating the orthodontic appliance system.

[0054] Figure 8B Is using Figure 8A The image shows a clinical case photo of an orthodontic appliance system.

[0055] Figure 9A , Figure 9B , Figure 9C and Figure 9D A photograph of the testing device used to measure according to Figure 7A The exemplary virtual model shown illustrates the anti-rotation effect produced by an orthodontic appliance system manufactured using this model.

[0056] Figure 10A and Figure 10B Is using Figure 9A , Figure 9B , Figure 9C and Figure 9D The graph shows the relationship between the rotation angle and the torque measured by the test device shown.

[0057] Figure 11 This is a front view of a virtual model of a patient's teeth, illustrating an orthodontic appliance system according to an embodiment of the present invention.

[0058] Figure 12 This is a plan view of a virtual model of an orthodontic appliance system according to an embodiment of the present invention. Detailed Implementation

[0059] Embodiments of the present invention relate to orthodontic treatment systems. Exemplary systems may include one or more orthodontic appliances, one or more attachments fixed to a patient's teeth, and elastic elements for applying forces to one or more teeth in the patient's maxilla. Exemplary systems are capable of derotating at least one molar of a patient and producing maxillary distal movement and / or mandibular advancement during orthodontic treatment. In exemplary systems, tooth derotation, distal movement, and / or advancement can be achieved by providing a rigidly reinforced region within one or more maxillary appliances relative to other regions of the appliance. For example, this region of the appliance may be a built-in reinforcing beam or other structure located near the selected tooth and then shaped during the manufacture of the appliance. That is, this region is integral with the appliance but may not conform to the shape of the patient's teeth. The design and location of the rigidly reinforced region should enable the transmission of movement forces between teeth, such as between anterior teeth (i.e., one of the central incisors, lateral incisors, or canines) and posterior teeth (i.e., one of the premolars, premolars, or molars). For example, the appliance can receive tooth movement forces at the patient's canines, such as forces from an external elastic element. For example, the elastic element can be attached to the patient's mandible. This external force is primarily transmitted to the patient's first molars, but is not intentionally applied to teeth located between the canines and the first molars, such as premolars. The external force is transmitted to the posterior teeth, essentially skipping the intermediate teeth, such as premolars. In other words, in one embodiment, this area of ​​the appliance does not transmit external forces to the intermediate teeth between the patient's maxillary anterior and posterior teeth. Alternatively, any force component from the external force transmitted to the intermediate teeth between the anterior and posterior teeth is insufficient to move the intermediate teeth. Unlike the external force applied to the anterior teeth, the appliance can apply orthodontic forces to the intermediate teeth from other areas of the appliance, depending on the treatment plan. Derotation of the posterior teeth can be achieved through the transmission of external forces. Derotation, as referred to herein, means the rotation of the teeth toward their anatomically normal position. Derotation according to embodiments of the invention is achieved without the mechanical ball joints used in metal appliances (e.g., Carroll dynamic appliances). After the rotation is completed, the force applied to the anterior teeth can achieve distal movement.

[0060] As another example, in addition to, or as an alternative to, rigid reinforcement areas, paired appliances may include opposing, occlusal-extending structures. These occlusal-extending structures are hollow blocks that interact to achieve mandibular advancement when the patient closes their jaw. Exemplary occlusal-extending structures include regular-shaped volumetric structures built into the appliance; they are not tooth-shaped. These structures can be incorporated during mold design and then shaped during appliance manufacturing. Class II malocclusion can be corrected during treatment using one or both of these exemplary systems. The industry believes that the exemplary systems improve treatment efficiency, thereby shortening treatment time for both adults and children. Treatment efficiency is improved and treatment time is shortened without the use of metal components or metal appliances. This also preserves the aesthetic advantages of appliance treatment. Furthermore, it is advantageous that the system achieves both dental-level correction and skeletal-level improvement. Other advantages of the exemplary systems may include the ability to correct Class II malocclusion even with poor patient compliance.

[0061] Therefore, refer to the attached diagram for general information and specific details. Figure 1 An exemplary orthodontic appliance system 10 includes one or more of the following components: an maxillary appliance 12, a mandibular appliance 14, one or more attachments 16, and an elastic element 20. While each appliance 12 and 14, attachment 16, and elastic element 20 will be described in more detail below, the exemplary orthodontic appliance system 10 may include any one or more of the appliances 12 and 14, with or without attachment 16, and with or without elastic element 20. Therefore, exemplary embodiments of the present invention are not limited to this. Figure 1 The combination shown includes orthodontic appliances 12 and 14, accessory 16, and elastic element 20. For example, an embodiment of orthodontic appliance system 10 may include only the maxillary appliance 12. As another example, an embodiment may include only the mandibular appliance 14. As yet another example, an embodiment may include both the maxillary appliance 12 and the mandibular appliance 14.

[0062] refer to Figure 1 and Figure 2In one embodiment, the maxillary appliance 12 is designed to be fixed to the patient's maxilla and to apply tooth movement forces to one or more of the patient's teeth. In this regard, the maxillary appliance 12 may be one of a set of maxillary appliances designed to progressively move one or more teeth from their initial, untreated position and / or orientation to one or more intermediate positions and / or orientations, ultimately reaching an aesthetically pleasing position and / or orientation, according to a treatment plan. The treatment plan may be developed by a clinician, and the set of maxillary appliances may be manufactured according to that treatment plan. As shown, an exemplary maxillary appliance 12 includes a hollow housing 22 for enclosing the crowns of multiple teeth 18 of the patient. The housing 22 has a plurality of cavities 24 that collectively define a border 26. The shape of one or more cavities 24 may be designed to accommodate a particular tooth 18 of the patient. In the illustrated embodiment, the midline 28 of the housing 22 lies between the cavities 24 for receiving the patient's central incisors. The midline 28 of the housing 22 may be offset from the midline of the patient's facial anatomy. This deviation can be corrected during treatment. Margin 26 forms an opening 30 on the housing 22, and simultaneously constitutes the gingival margin of the housing 22. When the appliance 12 is worn on the patient's jawbone, the patient's teeth 18 enter their respective cavities 24 through the opening 30.

[0063] The housing 22 has wall structures that contact several surfaces of the patient's tooth 18 and together form a cavity 24. For example, the housing 22 includes an occlusal wall 32, a labial wall 34, and a lingual wall 36. The housing 22 may also include distal portions 40 that surround the cavity 24 that receives the most posterior molar. When the cavity 24 receives the patient's tooth 18, the walls 32, 34, 36, and 40 generally mate with the corresponding surfaces of the patient's tooth, and in some cases may contact each other, while the edge 26 is located close to the patient's gingiva.

[0064] In one exemplary embodiment, the housing 22 includes a rigid reinforcement region 42, as shown, spanning multiple cavities 24 on the lip sidewall 34. Although in Figure 1 As not visible in the image, the second rigid reinforcement region 42 may also span multiple teeth 18 on the other side (e.g., the right side) of the patient's jawbone. In this regard, embodiments of the orthodontic appliance system 10 may be symmetrically arranged relative to the midline 28 of the housing 22, although embodiments of the invention are not limited to any symmetrical configuration of the appliance 12. Thus, the rigid reinforcement region 42 is located on the right side of the patient's teeth, but... Figure 1 and Figure 2Not visible in the middle. The design of one or two rigid reinforcement regions 42 should enable the transmission of movement forces between two spaced teeth. For example, region 42 can transmit tooth movement forces directly from anterior teeth (i.e., one of the central incisors, lateral incisors, or canines) to posterior teeth (i.e., one of the premolars, premolars, or molars), wherein at least one intermediate tooth separates the posterior and anterior teeth. Thus, the mesiodistal dimensions spanned by region 42 are sufficient to cross multiple teeth 18 on the left and / or right side of the patient's maxilla. Region 42 has occlusal-gingival height dimensions and labial-lingual width dimensions, which are large enough to transmit tooth movement forces. These dimensions may be independent of the patient's anatomy and are specifically designed to resist compressive forces at their mesiodistal positions generated when the corresponding cavity 24 is subjected to compressive loads (e.g., loads from the elastic element 20). Thus, when applied forces are transmitted through region 42, the selected cavity 24 in region 42 can maintain its dimensions as it was formed. Thus, if the selected cavity 24 does not contact the patient's teeth, the force applied to the elastic element 20 and transmitted through region 42 will not cause any of the walls 32, 34, 36, and 40 to contact the teeth (if there was no prior contact). In other words, when a compressive force sufficient to cause the wall to contact the tooth is applied to region 42 (if there was no prior contact), walls 32, 34, 36, and 40 will not deform.

[0065] exist Figure 2 In the exemplary embodiment shown, the rigidity-enhancing region 42 is formed by structure 46 of the housing 22. In other words, in this exemplary embodiment, it is not necessary to attach a separate structure (such as a metal rod) to the housing 22 to provide sufficient rigidity to transmit forces. By way of example only, structure 46 may be integral with the labial wall 34 only along a selected cavity 24. Although not shown, structure 46 may also be integral with the lingual wall 36 in addition to or as an alternative to the labial wall 34. Structure 46 may be independent of the patient's tooth anatomy in each dimension, both occlusal-gingival and labial-lingual. However, despite having a non-tooth shape, structure 46 maintains aesthetic transparency of the housing 22.

[0066] refer to Figure 1 , Figure 2 and Figure 3AIn the exemplary embodiment shown, structure 46 is a reinforcing beam 50 formed on the labial wall 34 of the housing 22. The reinforcing beam 50 extends from the canine cavity (sometimes referred to as the canine cavity) 52 of the maxilla to the first molar cavity 54 of the housing 22. Thus, the reinforcing beam 50 spans the mesiodistal distance between the canine 56 and the first molar 60, and crosses the first premolar 62 and the second premolar 64. For example, the maxillary appliance 12 can receive tooth movement forces at the canine cavity 52 of the patient. This force is primarily transmitted to the first molar cavity 54 via the reinforcing beam 50 in the labial wall 34. This force is not intentionally applied to the teeth located between the canine 56 and the first molar 60, for example, not to either of the premolars 62 and 64. The transmission of force essentially skips the intermediate teeth 62 and 64. In this example, the reinforcing beam 50 may have a U-shaped cross-sectional structure (see...). Figure 3C The U-shaped opening faces the cavity 24. As an example only and not a limitation, the occlusal-gingival height dimension of the reinforcing beam 50 ranges from 1 mm to 3 mm, and the labial-lingual width dimension ranges from 1 mm to 3 mm.

[0067] In some embodiments, selected cavities 24 conform to the shape of the patient's teeth, while other cavities 24 may be larger than the corresponding tooth size. For example, see reference... Figure 3A and Figure 3C When the appliance 12 is attached to the patient's teeth 62 and 64, the labial walls 66a of the housing 22 adjacent to the premolar 62 and 70a of the premolar 64 may be spaced apart from the corresponding teeth 62 and 64. That is, neither when the appliance 12 is initially placed on the patient's jawbone nor after the application of the elastic element 20, the labial walls 66a and 70a of the housing 22 contact the corresponding teeth 62 and 64. For example, the vertical distance 72 between the corresponding tooth surface and the labial walls 66a and 70a should be large enough to ensure that the labial walls 66a and 70a do not contact the corresponding teeth 62 and 64 during the application of force to the appliance 12. For example, the distance 72 could be 1 mm. This spacing can be achieved by increasing the size of the mold for each corresponding tooth 62 and 64 at one or more locations associated with the desired spacing. As the appliance 12 is shaped on the enlarged mold teeth, the labial walls 66a and 70a of the housing 22 will be separated from the actual teeth during orthodontic treatment.

[0068] Furthermore, while the labial walls 66a and 77a may be spaced apart from the corresponding teeth 62 and 64, the lingual walls 66b and 77b relative to the lingual portions of teeth 62 and 64 can be designed to conform to the shape of teeth 62 and 64. When conforming to the tooth shape, the maxillary appliance 12 can contact the corresponding teeth 62 and 64 at the lingual walls 66b and / or 77b, and apply sufficient force to move teeth 62 and 64 according to the established orthodontic treatment plan. Although Figure 3A As not shown, depending on the treatment plan, one or both of the labial walls 66a and 70a, and one or both of the lingual walls 66b and 70b, may apply force to the corresponding teeth 62 and 64, or none at all. Embodiments of the maxillary appliance 12 are not limited to... Figure 3A and Figure 3C The illustrated embodiment. The labial walls 66a, 70a and the lingual walls 66b, 70b can be individually and selectively positioned to allow for the movement or non-movement of the corresponding teeth 62, 64.

[0069] Continue to refer to Figure 2 and Figure 3A In an exemplary embodiment, the maxillary appliance 12 includes a receiving portion 74 opening into a cavity 54 for receiving a first molar 60. According to some embodiments, an attachment 76 is secured to the patient's first molar 60. When the maxillary appliance 12 is worn on the patient's jaw, the attachment 76 is received in the receiving portion 74. In one embodiment, the attachment 76 has a bevel and is generally prismatic. The attachment 76 may have a relatively long dimension that can be aligned with the long axis of the first molar 60 when it is secured to the first molar 60 by adhesive bonding. In the appliance 12, the receiving portion 74 may be located at the rear end 82 of the reinforcing beam 50. As shown, one surface 80 of the attachment 76 faces forward, i.e., toward the canine 56. The attachment 76 is adjacent to the rear end 82 of the reinforcing beam 50 and is configured to forcefully engage with the reinforcing beam 50, particularly at surface 80, which may be flat. The contact between surface 80 and reinforcing beam 50 is approximately perpendicular (e.g., with an error of ±10°). It is generally assumed that reinforcing beam 50 will contact surface 80 during the application of force using elastic element 20. That is, when a load is applied to reinforcing beam 50, it pushes against surface 80. Due to the orientation of reinforcing beam 50 and surface 80, the load is transmitted from reinforcing beam 50 to attachment 76 on surface 80. Consequently, attachment 76 moves, causing the first molar 60 to derotate. The contact between appliance 12 and attachment 76 is a sliding contact. The first molar 60 rotates under the force applied to surface 80 by reinforcing beam 50. Although not shown, appliance 12 may cause the first molar 60 to derotate or move without the application of elastic element 20; that is, any one or a combination of walls 32, 34, 36, and 40 may force contact with the first molar 60, thereby achieving tooth movement. The orientation and shape of attachment 76 on the first molar 60 facilitate this force transmission and sliding connection, thereby achieving derotation. This sliding contact and force transmission mechanism will be referenced below. Figures 6A-6D Describe it.

[0070] like Figure 2 and Figure 3AAs shown, in an exemplary embodiment, the maxillary appliance 12 includes a receiving portion 84 opening into a cavity 52 for receiving a canine 56. According to some embodiments, an attachment 86 is secured to the patient's canine 56. When the maxillary appliance 12 is worn on the patient's jawbone, the attachment 86 is received in the receiving portion 84. In one embodiment, the attachment 86 is hook-shaped, and the receiving portion 84 also has a hook shape. This configuration allows for more efficient reception of the canine from the elastic element 20 (…). Figure 1 The applied load is transmitted from the canine 56 to the appliance 12, then to the reinforcing beam 50, and finally to the first molar 60 as described above. The receiving portion 84 may be located at the foremost end 90 of the reinforcing beam 50. Therefore, the attachment 86 is adjacent to the reinforcing beam 50 and may be in forced contact with it. Specifically, contact may occur at the attachment 86 when a load is applied by the elastic member 20. In other embodiments, a button (not shown) may be attached to the canine 56. In this case, the appliance 12 may have a notch (not shown) for engagement with the button. The button can then be directly connected to the elastic member 20. In still other embodiments, both an attachment and a button are attached to the canine 56. The button is connected to the elastic member 20, and the attachment engages with the reinforcing beam 50 in a manner similar to that of the attachment 86 described above.

[0071] refer to Figure 3A In one embodiment, the reinforcing beam 50 is composed of a plurality of adjacent portions 88. As shown, the adjacent portions 88 are located in the lip wall 34 of the housing 22 and span the region between adjacent cavities 24. For example, in the exemplary embodiment shown, adjacent portion 92 bridges the valley between lip walls 66a and 70a, adjacent portion 94 spans the valley between lip wall 66a and the receiving portion 84, and adjacent portion 96 spans the valley between lip wall 70 and the receiving portion 74. The reinforcing beam 50 prevents bellows-like compression between adjacent cavities 24, i.e., prevents deformation of the lip, lingual, and occlusal walls and collapse of the cavity 24 under compressive forces. The minimum lip-lingual dimension of the reinforcing beam 50 can be equal to the distance between the intersection point between adjacent lip walls 66a and 70a and the outermost lip end of either lip wall 66a or 70a. In other words, the minimum dimension can be equal to the lip-tongue depth of the valley between each cavity 24, such that the beam 50 just fills the valley between the cavities and is flush with the outermost surfaces of the lip sidewalls 66a and 70a. The maximum lip-tongue dimension of the reinforcing beam 50 can be greater than the depth of the valley between each cavity 24. In this structure as shown, the reinforcing beam 50 forms a continuously outwardly extending lip appearance from the receiving portion 74 to the receiving portion 84, rather than separate, spaced-apart adjacent portions 88.

[0072] refer to Figure 3BIn one embodiment, the rigidity-enhancing region 42 can be another reinforcing structure for the labial sidewall 34 between the receiving portions 74 and 84. That is, instead of using a structure 46 like beam 50, the labial sidewall 34 is treated (as shown in the shaded area 87) so that the material itself can transfer the force applied to the receiving portion 84 to the receiving portion 74, and the labial sidewalls 66a and 70a do not deform significantly. For example, the deformation of the labial sidewalls 66a and 70a may not be sufficient to allow them to contact their corresponding adjacent teeth 62, 64. (See reference...) Figure 1 and Figure 4 In one embodiment, the mandibular appliance 14 is designed to be fixed to the patient's mandibular teeth and to apply tooth movement forces to one or more of the patient's teeth 18. In this regard, the mandibular appliance 14 may be one of a set of mandibular appliances designed to move one or more teeth from their initial, untreated position and / or orientation to one or more intermediate positions and / or orientations, ultimately to an aesthetically pleasing position and / or orientation, according to a treatment plan. The treatment plan may be developed by a clinician, and the set of mandibular appliances may be manufactured according to that treatment plan. The mandibular appliance 14 may be used in conjunction with... Figure 1 and Figure 2 The maxillary appliance 12 shown is used in conjunction with other appliances. As shown, an exemplary mandibular appliance 14 includes a hollow housing 100 for enclosing the crowns of multiple teeth 18 of the patient. The housing 100 is formed with a plurality of cavities 102 that collectively define a margin 104. One or more cavities 102 may be designed to receive a specific tooth 18 of the patient. The margin 104 defines an opening 106 on the housing 100 and forms the gingival margin of the housing 100. When the appliance 14 is worn on the patient's jawbone, the patient's teeth 18 enter their respective cavities 102 through the openings 106.

[0073] The housing 100 has wall portions that contact the surface of the patient's tooth 18 and define a cavity 102. For example, the housing 100 includes an occlusal wall 110, a labial wall 112, and a lingual wall 114. The housing 100 may also include distal portions 116 that surround the cavity 102 accommodating the most distal molar. When the cavity 102 accommodates the patient's tooth 18, the walls 110, 112, 114, and 116 generally conform to the surface of the corresponding patient's tooth, and in some cases may contact each other, with the edge 104 located near the patient's gingiva.

[0074] like Figure 4 As shown, in one exemplary embodiment, the lip wall 112 of the housing 100 is provided with a receiving portion 120. For example, the receiving portion 120 opens into a cavity 122 for enclosing the first molar 124. In the illustrated embodiment, the receiving portion 120 may be in the form of an integral hook for receiving an elastic element 20 (such as...). Figure 1(As shown). In this regard, embodiments of the orthodontic appliance system 10 can be arranged symmetrically with respect to the midline 128 of the housing 100. Therefore, although Figure 4 It is not visible in the middle, but another receiving part can also be formed at the first molar on the right side of the housing 100.

[0075] Attachment 126 is secured to the first molar 124. In one embodiment, attachment 126 has a hook-like shape for securing the elastic element 20. When the mandibular appliance 14 is placed on the patient's mandible, attachment 126 is received in the receiving portion 120. Applying the elastic element 20 to the receiving portion 120 and attachment 126 of the mandibular appliance 14 applies a force that tends to push the patient's mandible forward relative to the maxilla. See also Figure 1 Although a one-piece hook is shown in the figure, embodiments of the invention are not limited thereto. For example, as an alternative to the receiving portion 120, the mandibular appliance 14 may have an incision (not shown) on the labial wall 112. The incision exposes the surface of the first molar 124 to which a button (not shown) is attached. In such embodiments, the button is connected to an elastic element 20.

[0076] In one exemplary embodiment, reference Figure 5A and 5B This shows a virtual model 132 used to manufacture the aforementioned orthodontic appliance 12. In one embodiment, a virtual, elongated horizontal beam attachment 130 may be attached to the intermediate teeth and extend from the anterior teeth to the posterior teeth. Figure 5A and 5B In the exemplary embodiment shown, the virtual elongated horizontal beam attachment 130 can be a single horizontal attachment or multiple horizontal beam attachments 134 attached to the model teeth 62 and 64. The individual virtual horizontal beam attachments 134 can be interconnected or in contact with each other to form a single virtual beam attachment. A mold representing the virtual model 132 is manufactured, containing the molded structure representing the attachment 130. The orthodontic appliance 12 can be formed through this mold, wherein the reinforcing beam 50 is formed by the mold. In other words, in the illustrated embodiment, the reinforcing beam 50 is formed during the molding of the orthodontic appliance 12.

[0077] Now for reference Figure 5C and 5D As Figure 5A and 5BIn an alternative embodiment, the reinforcing beam 50 is formed during the mold-making process. For example, on a virtual mold 150 of tooth 18, there is a single dental arch shape 152 extending from canine 56 to first molar 60. The design of this single dental arch shape 152 spans premolars 62 and 64. An actual mold can be manufactured based on the virtual mold 150. The appliance 12 is manufactured by shaping a sheet on the mold and shape 152, thereby forming the reinforcing beam 50. Thus, the reinforcing beam 50 has an internal hollow core that conforms to the shape of the dental arch shape 152.

[0078] refer to Figure 6A , 6B 6C and 6D, according to Figure 5A The virtual model 132 shown illustrates the derotation process within the virtual model. Appendix 130 illustrates the force transmission when using the appliance 12 with region 42. In this series of figures, an elastic element (not shown) can be attached to a button 136 on the canine 56. When the elastic element applies force at the button 136 (in... Figure 6B , 6C When (as indicated by arrow 140 in 6D), the force is transmitted to attachment 86 via canine 56. Attachment 86 contacts the slender horizontal beam attachment 130. Subsequently, the force is transmitted from attachment 86 through the slender horizontal beam attachment 130 to attachment 76 at its point of contact with the slender horizontal beam attachment 130. According to Figure 6B , 6C As indicated by arrow 142 in 6D, molar 60 undergoes derotation. The degree of derotation of molar 60 can be represented by the relative movement of its axis 144.

[0079] although Figures 6A-6D Not shown in the text, one advantage of using the orthodontic appliance system embodiments disclosed herein is that it allows for progressive, phased tooth movement according to the treatment plan. With conventional Caryl Dynamics appliances, derotation and distal movement must be performed. This typically results in a large gap between the patient's canines and central incisors. This gap can be noticeable and visually unappealing, potentially causing the patient to feel more self-conscious. Once the gap forms, the Caryl Dynamics appliance needs to be removed, and the patient's anterior teeth are then retracted into these gaps. In other words, the treatment involves two phases: derotation / distal movement and retraction. With the embodiments of the present invention, these gaps are not formed. That is, the treatment plan can require progressive derotation followed by anterior retraction. The treatment plan can iterate between progressive derotation and progressive anterior retraction. By performing each movement step by step, large, aesthetically unappealing gaps can be avoided.

[0080] In one exemplary embodiment, and with reference to Figure 1 , 24. The maxillary appliance 12 includes a stop 160 extending along the occlusal surface, and the mandibular appliance 14 includes opposing stops 162 extending along the occlusal surface. Stops 160 and 162 are integrally formed with housings 22 and 100 and may be hollow. As shown, each stop 160 and 162 includes a ramp 164 and 166, respectively. Stops 160 and 162 are located within their respective appliances 12 and 14, ensuring that stops 160 and 162 engage with each other when the patient closes their jaw. Figure 1 As can be seen, when the patient closes their jaw, the mandible approaches the maxilla, and slope 166 and slope 164 make sliding contact. Due to the inclined characteristics of slopes 164 and 166, further closing of the jaw will generate a forward pushing force on the mandible.

[0081] At a predetermined distance (determined by the height of the stop 160 on the maxillary appliance 12 or the height of the stop 162 on the mandibular appliance 14), contact between the teeth and one or both stops 160, 162 prevents further closure of the jawbone. By way of example only and not limitation, the height of one or both stops 160, 162 may be less than 6 mm. For example, the height of stops 160, 162 may be less than 4 mm. Embodiments of the invention are not limited to appliances 12 and 14 with stops 160 and 162. For example, appliances 12 and 14 without stops 160 and 162 may be used. In one exemplary embodiment, if the reinforcing beam 50 and stops 160, 162 are used together, mandibular anterior movement may be achieved more quickly because when stops 160, 162 are not engaged, the mandible moves forward under the tension of the elastic element 20, and when stops 160, 162 are engaged, the mandible is also pushed forward. Therefore, the mandible will always be in a forward-moving state. Furthermore, it is believed that by using the elastic element 20, the height of blocks 160 and 162 can be reduced by 50% while still maintaining the desired mandibular advancement. Moreover, even if the patient does not follow instructions to use the elastic element 20 or the jaw is not fully closed, a certain degree of mandibular advancement can still be achieved. The combination of blocks 160 and 162 with the elastic element 20 works synergistically and complementarily to treat the patient from both orthodontic and orthognathic perspectives.

[0082] In one embodiment of the present invention, an orthodontic appliance for Class II malocclusion caused by sagittal displacement of the maxilla and mandible is provided; comprising a maxillary appliance; having a lateral incision in front of the maxillary canines and mandibular first molars; a button provided on each maxillary canine and mandibular first molar, the button being accommodated in the incision of the appliance and bonded to the teeth; an elastic retraction device provided on each side of the oral cavity, the device being stretched between the button on the maxillary canine and the button on the mandibular first molar; and further comprising a transmission device for transmitting the tension applied by the elastic retraction device between the maxillary canines and the maxillary first molars, characterized in that: a first fastener is bonded to the lateral surface of the maxillary canines; a second fastener is bonded to the lateral surface of the maxillary first molars; the maxillary appliance includes a reinforcing bow, which is a component of a rigid appliance, disposed between the two fasteners, for transmitting part of the tension applied by the elastic retraction device on the maxillary canines to the maxillary first molars.

[0083] According to one embodiment of the invention, a first fastener is parallel to the tooth axis and located distal to the button, providing support distal to the maxillary canine. According to one embodiment, a second fastener extends horizontally and is obliquely tangential to the mesial side of the maxillary first molar. According to one embodiment, the maxillary appliance does not contact the maxillary premolars. According to one embodiment, the maxillary appliance applies a forward sagittal force to the maxillary incisors. Figure 11 This shows a partial side view of a jawbone and teeth, on which elements of a Class II malocclusion correction appliance are bonded. Figure 12 yes Figure 11 A top view of the maxillary hemimaxilla.

[0084] According to one embodiment, the second snap pin extends horizontally and is obliquely incised mesially to the maxillary first molar. The maxillary hemimaxilla includes the maxillary teeth: incisors 7 and 6, canine 1, premolars 4 and 5, and first molar 3. The mandibular hemimaxilla includes the mandibular teeth, including the first molar 2. The maxillary and mandibular appliances, or alveoli, are made of a substantially transparent plastic material and are not shown in the figures. On their lateral surfaces, the appliances have incisions anterior to the maxillary canine 1 and the mandibular first molar 2. These incisions provide access to the lateral or buccal surfaces of each tooth 1, 2.

[0085] Buttons 8 and 9 are bonded to the lateral surface of the maxillary canine 1 and the mandibular first molar 2, respectively. An elastic retraction device is stretched between the two buttons 8 and 9, which applies forward traction to the mandible in a conventional manner. A first stud 10 is bonded to the lateral surface of the maxillary canine 1, located distal to button 8. This stud has a substantially vertical posterior surface parallel to the tooth axis, providing support distally to the canine 1. A buccally centered second stud 11 is bonded to the lateral surface of the maxillary first molar 3. This stud extends horizontally and has a beveled anterior surface, forming a support surface for posterior displacement and derotation. A rigid reinforcing band, made of the same plastic material as the appliance and indicated by symbol 12, is built into the thickness direction of the maxillary appliance. The ends of the reinforcing band 12 contact the vertical posterior surface of the first stud 10 (at endpoint 13) and the inclined anterior surface of the second stud 11 (at endpoint 14), respectively. Between the maxillary canine 1 and the maxillary first molar 3, the maxillary appliance and reinforcing arch 12 do not contact the premolars 4 and 5. The resilient retraction device applies an anterior pull on the mandible to reduce the displacement between the upper and lower dental arches characteristic of Class II malocclusion. Simultaneously, the maxillary canine 1 is subjected to the pull applied by the resilient retraction device. This pull is transmitted to the first stapes 10, and then through the reinforcing arch 12 of the maxillary appliance to the second stapes 11 of the maxillary first molar 3. The beveled surface of the second stapes 11 ensures that a force is applied to the maxillary first molar 3, causing it to undergo mesial-buccal rotation and distal movement.

[0086] At the same time, the maxillary appliance, under the action of the elastic retraction device, applies a sagittal force to the maxillary anterior teeth during the mandibular protrusion process, thereby driving the anterior teeth to move forward.

[0087] A Class II malocclusion correction appliance for correcting sagittal displacement of the maxilla and mandible; the appliance comprises: a maxillary appliance for the maxillary teeth and a mandibular appliance for the mandibular teeth; characterized in that the appliances have lateral incisions anterior to the maxillary canines and mandibular first molars; further comprising: a button 8 or 9 on each maxillary canine 1 and each mandibular first molar 2, the button being accommodated in the incision of the appliance and bonded to the teeth 1 or 2; further comprising: an elastic retraction device on each side of the oral cavity, the device being positioned at the button 8 of the maxillary canine 1 and the mandibular first molar 2. The first molar 2 is stretched between buttons 9; and includes a transmission device for transmitting the tension applied by the elastic retraction device between the maxillary canine 1 and the maxillary first molar 3, characterized in that: the maxillary canine 1 has a first fastener 10 bonded to its outer surface; the maxillary first molar 3 has a second fastener 11 bonded to its outer surface; the maxillary appliance includes a reinforcing bow 12, which is a component of the appliance and has rigidity, disposed between the two fasteners 10, 11, for transmitting part of the tension applied to the maxillary canine 1 by the elastic retraction device to the maxillary first molar 3.

[0088] In one embodiment of the present invention, an orthodontic device is provided, characterized in that: a first fastener 10 is parallel to the tooth axis and located distal to the button 8, for providing support distal to the maxillary canine 1.

[0089] In one embodiment of the present invention, an orthodontic device is provided, characterized in that: the second fastener 11 extends horizontally and is obliquely cut on the mesial side of the maxillary first molar (3).

[0090] In one embodiment of the present invention, an orthodontic device is provided, characterized in that the maxillary appliance does not contact the maxillary premolars 4 and 5.

[0091] In one embodiment of the present invention, an orthodontic device is provided, characterized in that the maxillary appliance applies a forward sagittal force to the maxillary incisors 6 and 7.

[0092] In one embodiment, an appliance is provided for correcting Class II malocclusion, specifically for correcting sagittal misalignment of the maxilla and mandible; the appliance includes a maxillary appliance for the maxillary teeth and a mandibular appliance for the mandibular teeth; characterized in that the appliances have lateral incisions anterior to the maxillary canines and mandibular first molars; further comprising: a button 8, 9 on each maxillary canine 1 and each mandibular first molar 2, the button being received in the incision of the appliance and bonded to the teeth 1, 2; and further comprising: an elastic retraction device on each side of the oral cavity for stretching, the device... Between the button 8 of the maxillary canine 1 and the button 9 of the mandibular first molar 2; the device also includes a transmission mechanism for transmitting the tension applied by the elastic retraction device between the maxillary canine 1 and the maxillary first molar 3, characterized in that: the maxillary canine 1 has a first fastener 10 bonded to its outer surface; the maxillary first molar 3 has a second fastener 11 bonded to its outer surface; the maxillary appliance includes a reinforcing bow 12, which is an integral rigid structure, housed between the two fasteners 10, 11, for transmitting part of the tension applied to the maxillary canine 1 by the elastic retraction device to the maxillary first molar 3.

[0093] To facilitate a more comprehensive understanding of the present invention, the following non-limiting embodiments are provided.

[0094] Example

[0095] Two clinical assessment cases with slender horizontal beam attachments were evaluated. The first clinical case was... Figure 7A , 7B 7C and 7D displays, among which Figure 7A The model depicts the attachment layout, as well as the case of using a button and a vertical rectangular attachment on the fang. Figure 7B , 7CAnd 7D is Figure 7A The image shows a clinical case study illustrating this layout. The clinical layout demonstrates how bonded metal buttons can be used to transmit forces generated by elastic elements, thus simulating motion.

[0096] The second clinical case example Figure 8A and 8B The display shows that, Figure 8A The horizontal beam attachment was shown. Figure 8B These are photos of a clinical case demonstrating the use of a one-piece molded hook (elastic element not shown) on an orthodontic appliance at the canines. The clinical layout shown demonstrates how the one-piece molded plastic component with attachments can transmit forces generated from the elastic element to simulate movement.

[0097] In order to determine with Figure 7A The biomechanical effects of a similar layout to the one shown were tested. The orthodontic appliance includes a reinforcing beam, a one-piece molded hook, and a beveled attachment. Figure 9A , 9B As shown in Figures 9C and 9D, a testing apparatus was prepared in which a model of the patient's teeth was fixed on a platform. The first molar in the model was removed. The model was attached to the platform as follows. Figure 9A As shown. An orthodontic appliance with a one-piece molded hook, and an oversized central cavity at each premolar, is coupled to the model. The first molar cavity of the appliance is connected to a six-axis force measuring device. The assembly of the model and appliance is shown below. Figure 9B As shown. Figure 9C and 9D As shown, an elastic element is attached to a one-piece molded hook and extends to a fixed position on the platform. The rotation at the first molar is measured using a six-axis force measuring device. Figure 10A and Figure 10B The degree of rotation is shown graphically.

[0098] While the invention has been described through various embodiments, and these embodiments have been described in detail, the inventors do not intend to limit the scope of the appended claims or restrict them in any way to such detail. Therefore, additional advantages and modifications will be apparent to those skilled in the art. Various features of the invention can be used individually or in any combination, according to the user's needs and preferences.

Claims

1. An orthodontic appliance system for orthodontic treatment of patients' teeth, the system comprising: The first orthodontic appliance includes a housing with multiple cavities and is divided into a first side and a second side by a midline; The housing includes: (i) A first pair of cavities, wherein the cavities in the first pair of cavities are located on the first side and the second side respectively, and are configured to accommodate anterior teeth; (ii) A second pair of cavities, wherein the cavities in the second pair of cavities are located on the first side and the second side, respectively, and are configured to accommodate posterior teeth; and (iii) At least one intermediate cavity is provided on each of the first and second sides, which is located between the first cavity of the first pair of cavities and the second cavity of the second pair of cavities; each intermediate cavity is configured to accommodate a tooth located between the anterior tooth and the posterior tooth; The housing has multiple walls defining the plurality of cavities, and at least one wall of the intermediate cavity includes a rigid reinforcement region extending from the first cavity to the second cavity on each of the first and second sides.

2. The system according to claim 1, wherein, The rigidity-enhancing region is a reinforcing beam integral with the at least one wall, and the reinforcing beam has a non-tooth shape.

3. The system according to claim 2, wherein, The reinforcing beam includes a first adjacent portion located between the first cavity and the at least one intermediate cavity, and a second adjacent portion located between the at least one intermediate cavity and the second cavity.

4. The system according to claim 2 or 3, wherein, The reinforcing beam has a U-shaped cross-section.

5. The system according to any one of the preceding claims, wherein, (i) At least one of the plurality of walls of each cavity in the first pair of cavities includes a first receiving portion facing an opening toward the respective cavity; (ii) At least one of the plurality of walls of each of the second pair of cavities includes a second receiving portion facing the opening of the respective cavity; as well as (iii) When the appliance is coupled to the patient’s teeth, at least one of the multiple walls of each of the paired intermediate cavities is configured to be spaced apart from the tooth surface.

6. The system according to claim 5, wherein, At least one wall of the plurality of walls of each cavity in the first pair of cavities, and at least one wall of the plurality of walls of each cavity in the second pair of cavities, are lip walls.

7. The system according to claim 5 or 6, wherein, The first receiving portion is at the front end of the region, and the second receiving portion is at the rear end of the region.

8. The system according to claim 5, 6 or 7, wherein, The first receiving portion is an integrally formed hook, which is configured to receive an elastic element.

9. The system according to claim 5 or 6, wherein, At least one of the multiple walls of each cavity in the first pair of cavities includes a cutout configured to receive a button.

10. The system according to claim 5, 6 or 7, further comprising: The first attachment is configured to be fixed to each anterior tooth and is received in the corresponding receiving portion of the first receiving portion when the first attachment is attached to the corresponding anterior tooth.

11. The system of claim 10, further comprising: The second attachment is configured to be fixed to each posterior tooth and is received in the corresponding receiving portion of the second receiving portion when the second attachment is attached to the corresponding posterior tooth.

12. The system according to claim 11, wherein, Each of the second attachments has a prismatic configuration, the longitudinal axis of which is aligned with the long axis of the posterior tooth.

13. The system according to any one of the preceding claims, wherein, At least one of the paired intermediate cavities is larger than the tooth size in at least one dimension.

14. The system according to any one of the preceding claims, further comprising: The second orthodontic appliance includes a housing with multiple cavities, divided into a first side and a second side by a midline; the housing includes a pair of cavities located on either side of the midline, each cavity being configured to accommodate posterior teeth; The housing has a plurality of walls defining the pair of cavities, and one of the walls of each of the pair of cavities includes a receiving portion facing the cavity opening and is configured to receive an accessory.

15. The system according to any one of claims 1-13, further comprising: The second orthodontic appliance includes a housing with multiple cavities, divided into a first side and a second side by a midline; the housing includes a pair of cavities located on either side of the midline, each cavity being configured to accommodate posterior teeth; The housing has a plurality of walls defining pairs of cavities, and one of the walls of each cavity in each pair of cavities includes a cutout.

16. The system according to claim 14 or 15, wherein, The housings of the first and second orthodontic appliances each include a pair of stops located on either side of the midline and configured to extend along the occlusal direction, such that the stops on the first orthodontic appliance contact the stops on the second orthodontic appliance; and when the first and second orthodontic appliances are coupled to the patient's teeth, the pair of stops are configured to move the patient's mandible forward.

17. A method for performing orthodontic treatment using the system of any one of the preceding claims.

18. An orthodontic appliance system for orthodontic treatment of a patient's teeth, the system comprising: Orthodontic appliance, comprising a housing having multiple cavities, divided into a first side and a second side by a midline, the housing comprising: (i) A first pair of cavities, each of the first pair of cavities being configured to accommodate a maxillary canine; (ii) a second pair of cavities, each cavity in the second pair of cavities being configured to receive the maxillary first molar; and (iii) Two cavities, the two cavities being between a first cavity in a first pair of cavities on the first side and a second cavity in a second pair of cavities on the second side, wherein each of the two cavities is configured to receive a premolar; The housing has multiple walls defining the plurality of cavities, and at least one lip wall of each of the two cavities includes a reinforcing beam extending from the first cavity to the second cavity on each of the first and second sides.

19. The system according to claim 18, wherein, Each reinforcing beam has a non-tooth shape.

20. The system according to claim 18 or 19, wherein, The reinforcing beam includes: (i) A first adjacent portion, between one of the first cavities in the first pair of cavities and one of the two cavities located between the first cavity and the second cavity; (ii) a second adjacent portion, located between the two cavities; and (iii) A third adjacent portion, between the second cavity and another of the two cavities located between the first cavity and the second cavity.

21. The system according to any one of claims 18-20, wherein, Each reinforcing beam has a U-shaped cross-section.

22. The system according to any one of claims 18-21, wherein, Each of the two cavities between the first cavity and the second cavity is larger than the corresponding premolar size in at least one dimension.

23. The system according to claim 22, wherein, The at least one dimension is configured to position the labial wall of at least one of the two cavities located between the first cavity and the second cavity as spaced apart from the corresponding premolar.

24. A method of treating a patient using an orthodontic appliance system, the method comprising: The first orthodontic appliance is placed on the patient's upper teeth. The first orthodontic appliance includes a housing with multiple cavities, the housing being divided into a first side and a second side by a midline; the housing includes: (i) A first pair of cavities, wherein two cavities in the first pair of cavities are located on the first side and the second side respectively, and each cavity in the first pair of cavities accommodates a corresponding anterior tooth; (ii) a second pair of cavities, wherein two cavities in the second pair are located on the first side and the second side, respectively, and each cavity in the second pair of cavities accommodates a corresponding posterior tooth; and (iii) On each of the first and second sides, there is at least one intermediate cavity located between the first cavity of the first pair of cavities and the second cavity of the second pair of cavities; at least one of the cavities contains a tooth located between the corresponding anterior and posterior teeth; The housing has multiple walls defining multiple cavities, and at least one wall of the intermediate cavity includes a rigid reinforcement region extending from the first cavity to the second cavity on each of the first and second sides; and Force is applied to each cavity in the first pair of cavities and / or each anterior tooth, thereby each rigid reinforcement region transmits at least a portion of the applied force to each posterior tooth.

25. The method of claim 24, further comprising: The attachment is secured to each corresponding anterior tooth in the maxilla, wherein applying force to each cavity in the first pair of cavities and / or each anterior tooth includes applying force at the attachment of each anterior tooth.

26. The method of claim 25, wherein, The housing of the first orthodontic appliance includes a pair of receiving portions, each of which faces a corresponding first cavity opening and is located at the foremost end of the rigidity-enhancing region; During the wearing of the first orthodontic appliance, each of the pair of receptacles receives a corresponding accessory from the attachments; and Applying force to the attachment of each anterior tooth includes applying force to each receiving portion.

27. The method according to any one of claims 24-26, further comprising: Secure the attachment to each corresponding posterior tooth in the maxilla; Applying force to each cavity in the first pair of cavities and / or each anterior tooth includes: transmitting a portion of the applied force through each rigid reinforcement region to an attachment on each corresponding posterior tooth.

28. The method according to claim 27, wherein, The housing of the first orthodontic appliance includes a pair of receiving portions, each of which faces a corresponding second cavity opening and is located at the rear end of the rigidity-enhancing region; During the wearing of the first orthodontic appliance, each of the pair of receptacles, facing the corresponding cavity opening of the corresponding second cavity opening, receives a corresponding attachment on the posterior tooth.

29. The method according to any one of claims 24-29, further comprising: Secure the attachment to at least two teeth in the patient's lower jaw; Applying force to each cavity in the first pair of cavities and / or each anterior tooth includes applying force to each attachment on the patient's mandible.

30. The method according to any one of claims 24-30, further comprising: The second appliance is placed on the patient's lower teeth.

31. The method according to any one of claims 24-31, wherein, Applying force includes connecting one end of the elastic element to the first pair of cavities and / or each anterior tooth.

Images