Transparent correction device

Abstract

One embodiment of the present invention provides a transparent orthodontic device including a transparent orthodontic body having a channel formed therein for accommodating a tooth to be corrected in order to move the tooth from an initial position to a target position, and an occlusal portion defined in the transparent orthodontic body and positioned in an occlusal region that contacts an opposing tooth during occlusion, wherein the thickness of the occlusal portion is greater than the thickness of regions other than the occlusal portion.

Description

[Technical Field]

[0001] The present invention relates to transparent corrective devices. [Background technology]

[0002] Orthodontics is a treatment performed to correct irregular tooth alignment and abnormal occlusion between the upper and lower jaws. Conventional orthodontics involves attaching orthodontic brackets made of biosafe materials to the teeth and then applying the force of an orthodontic wire to the brackets to correct malocclusion. With conventional orthodontics using brackets and wires, treatment is performed with the bracket wire fixed to the teeth, which is unsightly and can cause oral hygiene problems.

[0003] To overcome these drawbacks, a new orthodontic treatment using transparent orthodontic appliances has recently become popular around the world. Transparent orthodontic appliances do not use brackets or wires, but are made of transparent polymeric materials, which makes them aesthetically pleasing, and they are removable when necessary and effective for maintaining oral hygiene. Transparent orthodontic appliances also cause less discomfort, making orthodontic treatment more comfortable for patients. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Republic of Korea Patent Registration No. 10-1510857 (2015.04.03) Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a transparent orthodontic appliance that can induce molar intrusion by increasing the thickness of the occlusal portion, or can prevent premature tooth contact by decreasing the thickness of the occlusal portion. [Means for solving the problem]

[0006] To achieve the above object, one aspect of the present invention provides a transparent orthodontic device including a transparent orthodontic body having a channel formed therein for accommodating a tooth to be corrected in order to move the tooth from an initial position to a target position, and an occlusal portion defined in the transparent orthodontic body and positioned in an occlusal region that contacts an opposing tooth during occlusion, wherein the thickness of the occlusal portion is formed thicker than the thickness of regions other than the occlusal portion.

[0007] In one embodiment of the present invention, the transparent orthodontic body may be a transparent orthodontic device characterized in that the thickness thereof increases toward the occlusal portion.

[0008] In one embodiment of the present invention, the transparent orthodontic device may further include a strength reinforcement part that is conformally formed on the outer surface of the transparent orthodontic body at a position distal to the movement direction of the tooth to be corrected, thereby reinforcing the orthodontic force.

[0009] In one embodiment of the present invention, in the case of an expansion case, the strength reinforcement part may be formed on the outer surface of the lingual side of the transparent orthodontic body, which may be a transparent orthodontic device.

[0010] In one embodiment of the present invention, in the case of a retraction case, the strength reinforcement part may be formed on the outer surface of the buccal side of the transparent orthodontic body, which may be a transparent orthodontic device.

[0011] In one embodiment of the present invention, in the case of an extrusion case, the strength reinforcement part may be formed on the outer surface of the transparent orthodontic body located proximal to the root of the tooth based on the maximum ridge of the tooth.

[0012] In one embodiment of the present invention, in the case of an intrusion case, the strength reinforcement part may be formed on the outer surface of the transparent orthodontic body located distal to the root of the tooth based on the maximum ridge of the tooth.

[0013] In one embodiment of the present invention, in the case of a rotation case, the transparent orthodontic device may be characterized in that the strength reinforcement parts are formed on the outer surface of the transparent orthodontic body, positioned diagonally with respect to a groove line formed on the occlusal surface of the teeth, when quadrants are set based on the groove line.

[0014] In one embodiment of the present invention, in the case of an angulation case, the strength reinforcement part may be formed on the outer surface of the mesial side of the transparent orthodontic body located in one direction based on the maximum ridge of the tooth, and on the outer surface of the distal side of the transparent orthodontic body located in the other direction based on the maximum ridge of the tooth.

[0015] In one embodiment of the present invention, in the case of a torque control case, the strength reinforcement part may be formed on the lingual outer surface of the transparent orthodontic body located in one direction based on the maximum ridge of the tooth and the buccal outer surface of the transparent orthodontic body located in the other direction based on the maximum ridge of the tooth. [Effects of the Invention]

[0016] According to one aspect of the present invention, the transparent orthodontic device according to the first embodiment of the present invention can prevent premature contact of teeth, including molars, during occlusion by making the thickness of the occlusal region thinner than the thickness of regions other than the occlusal region. Furthermore, the reduced thickness of the occlusal region reduces occlusal force, preventing invagination and open bite of the molars. Furthermore, the reduced thickness of the occlusal region increases elasticity and contact area, thereby increasing traction and retention. Furthermore, the reduced thickness of the occlusal region can reduce the feeling of a foreign body when worn.

[0017] According to another aspect of the present invention, the transparent orthodontic appliance according to the second embodiment of the present invention can induce molar intrusion due to increased occlusal force by forming the occlusal portion thicker than the non-occlusal portion. Furthermore, by forming the occlusal portion thicker than the non-occlusal portion, the tendency of the transparent orthodontic appliance to expand bucally and lingually due to masticatory pressure can be reduced. Furthermore, forming the occlusal portion thicker than the non-occlusal portion can increase the strength and improve the durability of the transparent orthodontic appliance. Furthermore, the direction and angle of the occlusal surface of the occlusal portion can be adjusted to induce intentional sliding movement of the mandible while engaging with the occlusal portion attached to the opposing teeth, thereby useful for treating the temporomandibular joint in patients with Class II and Class III malocclusion. Furthermore, adjusting the thickness of the occlusal portion to be parallel to the occlusal portion attached to the opposing teeth can reduce wear on the orthodontic appliance and reduce the force applied to the mandible in patients who grind their teeth.

[0018] The effects of the present invention are not limited to the effects described above, but should be understood to include all effects that can be inferred from the configurations described in the detailed description of this specification or the claims. [Brief explanation of the drawings]

[0019] [Figure 1] FIG. 1(a) is a plan view of a transparent correction device according to one embodiment of the present invention, and FIG. 1(b) is a cross-sectional view taken along line AA' of FIG. 1(a). [Figure 2]FIG. 2(a) shows an upper jaw dental model with an occlusal region displayed according to one embodiment of the present invention, and FIG. 2(b) shows a lower jaw dental model with an occlusal region displayed according to one embodiment of the present invention. [Figure 3] FIG. 3 is a diagram illustrating the occlusion of upper and lower jaw teeth when a transparent orthodontic appliance according to an embodiment of the present invention is attached to the teeth. [Figure 4] FIG. 4 is a view showing the occlusion of upper and lower jaw teeth when a transparent orthodontic appliance including a strength reinforcement part according to an embodiment of the present invention is attached to the teeth. [Figure 5] FIG. 5 shows an application area of ​​a strength reinforcement portion using an expansion case according to one embodiment of the present invention. [Figure 6] FIG. 6 shows the application area of ​​the strength reinforcement portion of the retraction case according to one embodiment of the present invention. [Figure 7] FIG. 7 shows an application area of ​​a strength reinforcement portion using an extrusion case according to one embodiment of the present invention. [Figure 8] FIG. 8 shows an application area of ​​a strength reinforcement portion in an intrusion case according to one embodiment of the present invention. [Figure 9] FIG. 9 shows an application area of ​​a strength reinforcement portion of a rotation case according to one embodiment of the present invention. [Figure 10] FIG. 10 shows the application area of ​​the strength reinforcement portion using an angulation case according to one embodiment of the present invention. [Figure 11] FIG. 11 shows an application area of ​​a strength reinforcement portion in a torque control case according to one embodiment of the present invention. [Figure 12] FIG. 12(a) is a plan view of a transparent correction device according to another embodiment of the present invention, and FIG. 12(b) is a cross-sectional view taken along line AA' of FIG. 12(a). [Figure 13] FIG. 13 is a view showing the occlusion of upper and lower jaw teeth when a transparent orthodontic appliance according to another embodiment of the present invention is attached to the teeth. [Figure 14] FIG. 14 is a view showing the occlusion of upper and lower jaw teeth when an orthodontic appliance including a reinforcing portion according to another embodiment of the present invention is attached to the teeth. BEST MODE FOR CARRYING OUT THE INVENTION

[0020] The present invention will be described below with reference to the accompanying drawings. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein. In addition, in order to clearly explain the present invention in the drawings, parts that are not relevant to the description are omitted, and similar parts are designated by similar reference numerals throughout the specification.

[0021] Throughout this specification, the term "connected" to another part includes not only "directly connected" but also "indirectly connected" through an intervening member. Furthermore, unless otherwise specified, the term "comprises" a certain component does not exclude other components but means that the component may further comprise other components.

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0023] Orthodontic treatment includes fixed orthodontics, in which brackets made of hard materials such as metal, resin, or ceramics are attached to the teeth and correction is achieved using the elasticity of the wire, and removable orthodontics, which uses elastic orthodontic devices that are easy to put on and take off. Transparent orthodontics, one of the removable orthodontic treatment methods, is particularly popular because it involves placing transparent orthodontic devices over the teeth, making them invisible from the outside and easy to put on and take off, making them easier to wear. Transparent orthodontic devices must be made of elastic materials so that they can be easily put on and taken off.

[0024] FIG. 1(a) is a plan view of a transparent correction device according to one embodiment of the present invention, and FIG. 1(b) is a cross-sectional view taken along line AA' of FIG. 1(a).

[0025] The transparent orthodontic device 100 is manufactured by setting virtual treatment object data based on the initial data of the patient's teeth, generating intermediate data for each stage so that the teeth move gradually from the initial position to the target position, and outputting the intermediate data and target data for each stage indirectly or directly.

[0026] The indirect output method includes a step in which a device for designing the transparent orthodontic device 100 outputs a dental setup model, and a device for manufacturing the transparent orthodontic device 100 uses the setup model as a dental mold and performs vacuum forming by applying pressure to a transparent molding sheet over the dental mold. That is, the transparent orthodontic device 100 according to the indirect output method is manufactured through vacuum forming using a molding sheet. The setup model refers to dental alignment data obtained by establishing an orthodontic diagnosis and treatment plan from a dental model of the patient before orthodontic treatment and moving the teeth to an ideal shape according to the treatment plan.

[0027] The direct output method is a method in which a transparent corrective device designing device directly produces a transparent corrective device without a device for manufacturing the transparent corrective device, and includes the steps of generating a transparent corrective device model and directly outputting the transparent corrective device model using a 3D device such as a 3D printer. That is, the transparent corrective device 100 produced using the direct output method can be manufactured using a 3D device such as a 3D printer.

[0028] The transparent orthodontic device 100 can be used in various cases, such as expansion, retraction, extrusion, intrusion, and rotation, to encase the mandibular or maxillary teeth to be corrected and align them from their initial positions to their target positions. That is, the transparent orthodontic device 100 is used by covering the patient's teeth, and can be manufactured and used in each stage, taking into account the maximum amount of tooth movement that needs to be corrected.

[0029] The transparent orthodontic device 100 may be made of an elastic material. The elasticity or shape-retaining force of the transparent orthodontic device 100 may provide a force in a certain direction to the teeth, moving the teeth from an initial position to a target position.

[0030] According to one embodiment, the transparent corrector 100 may comprise one or more selected from the group consisting of polycarbonate, polyethylene terephthalate, polyurethane, and glycol-modified polyethylene terephthalate. According to another embodiment, the transparent corrector 100 may be made of a polymeric material or an elastomeric polymer.The polymeric substance or elastomer may be, for example, natural polyisoprene such as cis-1,4-polyisoprene natural rubber and trans-1,4-polyisoprene gutta-percha, synthetic polyisoprene, polybutadiene, chloroprene rubber, polychloroprene, neoprene, bayprene, butyl rubber, halogenated butyl rubber, styrene-butadiene rubber, nitrile rubber, halogenated nitrile rubber, ethylene propylene rubber, ethylene propylene diene rubber, The rubber may include, for example, epichlorohydrin rubber, polyacrylate rubber, silicone rubber, fluorosilicone rubber, fluoroelastomer, perfluoroelastomer, polyether block amide, chlorosulfonated polyethylene, ethylene vinyl acetate, thermoplastic elastomer, polysulfide rubber, elastolefin, or a combination thereof.The above-mentioned materials for the transparent orthodontic device 100 are merely examples and are not intended to be limiting. In other words, any material having the physical properties necessary to achieve the functions of the transparent orthodontic device 100, such as transparency and elasticity, can be used as the material for the transparent orthodontic device 100.

[0031] Referring to FIG. 1, a transparent orthodontic device 100 of the present invention includes a transparent orthodontic body 110. The transparent orthodontic body 110 has an outer surface 111, an inner surface 112, and a channel 113 defined by the inner surface 112 for accommodating teeth. That is, the transparent orthodontic body 110 is configured to be attached to teeth to move the teeth to be corrected from an initial position to target positions for each stage. In this case, the transparent orthodontic body 110 may have a negative shape that reflects the target position for each stage of orthodontic treatment.

[0032] According to one embodiment, the transparent orthodontic device 100 includes an occlusal portion 120. The occlusal portion 120 may be defined on the transparent orthodontic body and formed in an occlusal region that contacts the opposing teeth during occlusion. The position of the occlusal portion 120 on the transparent orthodontic device 100 may change depending on the occlusal region of the transparent orthodontic device 100 that is manufactured for each stage of orthodontic treatment.

[0033] Meanwhile, the thickness of the occlusal portion 120 may be thinner than the thickness of the area other than the occlusal portion 120 .

[0034] In the case of conventional transparent orthodontic appliances, the thickness of the transparent orthodontic body, including the occlusal area, is uniform, which can cause the molar area to come into premature contact with the opposing tooth due to the thickness of the occlusal area. When the molar area comes into premature contact with the opposing tooth, a force that presses the tooth down is generated, and if this force persists, it can cause unintended molar intrusion or have negative consequences for the temporomandibular joint. In addition, the thickness of the occlusal area can also cause an open bite.

[0035] In other words, the transparent corrective device 100 of the present invention prevents premature contact of teeth, including molars, during occlusion by making the thickness of the occlusal area 120 thinner than the thickness of areas other than the occlusal area 120, thereby preventing molar invagination and open bite.

[0036] On the other hand, if the transparent corrective device 100 is made thick on the front teeth side and the occlusal portion 120 on the molar side is made thin, it is possible to induce invagination of the front teeth.

[0037] FIG. 2(a) shows an upper jaw dental model with an occlusal region displayed according to one embodiment of the present invention, and FIG. 2(b) shows a lower jaw dental model with an occlusal region displayed according to one embodiment of the present invention.

[0038] 1 and 2, the occlusion region 120 may be formed on the transparent orthodontic body 110 based on contact regions 11a and 11b mapped using the maxillary digital tooth model 10a and the mandibular digital tooth model 10b. Mapping refers to visually representing the contact regions 11a and 11b so that they can be distinguished according to the contact strength between the maxillary teeth and the mandibular teeth. That is, a boundary defining the occlusion region 120 may be formed based on the contact regions 11a and 11b mapped according to the contact strength. In this way, the occlusion region 120 may be formed in a more accurate occlusion region of the transparent orthodontic body 110, thereby preventing premature tooth contact.

[0039] FIG. 3 is a diagram illustrating the occlusion of upper and lower jaw teeth when a transparent orthodontic appliance according to an embodiment of the present invention is attached to the teeth.

[0040] The following description will be focused on the molar area as an example, however, the technical features of the transparent orthodontic appliance applied to the molar area can be equally applied to the entire tooth area.

[0041] 3, when the upper and lower teeth 20a and 20b are in occlusion, they form an occlusion area 30. The transparent orthodontic device 100 includes a transparent orthodontic body 110 attached to the teeth and an occlusion portion 120 formed on the transparent orthodontic body 110 in a region corresponding to the occlusion area 30.

[0042] According to one embodiment, the transparent orthodontic body 110 may include a boundary that defines the occlusal portion 120 and may be configured to have a thickness that decreases adjacent to the occlusal portion 120.

[0043] The occlusion area 30 may be set to include a marginal space so that the opposing teeth do not contact the boundary of the transparent orthodontic body 110 during occlusion, or so that the boundaries of the transparent orthodontic bodies 110 attached to the upper and lower jaws do not contact each other, taking into consideration not only vertical occlusion but also lateral occlusion. For example, the marginal space may be about 1 mm or more.

[0044] In this way, by making the thickness of the occlusal portion 120 of the transparent corrective device 100 thin, it is possible to prevent the problem of premature contact with the opposing teeth due to the thickness of the occlusal surface side of the transparent corrective device 100 during occlusion.

[0045] FIG. 4 is a view showing the occlusion of upper and lower jaw teeth when a transparent orthodontic appliance including a strength reinforcement part according to an embodiment of the present invention is attached to the teeth.

[0046] Referring to Fig. 4, the transparent orthodontic device 100 of the present invention may further include a strength reinforcement part 130. In this case, if the thickness of the occlusal part 120 of the transparent orthodontic device 100 is made thin, the orthodontic force acting on the teeth may be reduced. Therefore, by further forming the strength reinforcement part 130 on the transparent orthodontic device 100, it is possible to compensate for the orthodontic force that may be reduced by the occlusal part 120. That is, the strength reinforcement part 130 may be formed on the outer surface 111 of the transparent orthodontic body 110 adjacent to the occlusal part 120.

[0047] The strength reinforcement part 130 is made of a transparent orthodontic body according to each case of orthodontic treatment. 110That is, the strength reinforcement part 130 is configured to make the area where force is applied of the transparent corrective device 100 thicker than the other areas so that the force can be sufficiently transmitted to the teeth at the corresponding positions.

[0048] The strength reinforcement part 130 may be integrally manufactured using the same material as the transparent orthodontic body 110, or may be separately manufactured using a different material from the transparent orthodontic body 110 and conformally bonded to the transparent orthodontic body 110. In this case, the strength reinforcement part 130 may be integrally formed with the transparent orthodontic body 110 using, for example, a 3D printer.

[0049] The strength reinforcement part 130 may be formed only on a portion of the outer surface 111 of the transparent orthodontic body 110, and the other portion of the outer surface 111 of the transparent orthodontic body 110 may be exposed to the outside. In this case, the strength reinforcement part 130 may be formed in a tapered, knife edge, or wedge shape to minimize the foreign body sensation at the boundary with the outer surface 111 of the transparent orthodontic body 110 where the strength reinforcement part 130 is not formed.

[0050] According to one embodiment, the strength reinforcement part 130 may be formed on the outer surface 111 of the transparent orthodontic body 110 located distal to the movement direction of the tooth to be corrected. That is, the strength reinforcement part 130 is configured to supplement the orthodontic force in the target movement direction of the tooth to be corrected.

[0051] As a result, the strength reinforcement part 130 can improve tooth movement and tooth movement speed by minimizing deformation of the transparent orthodontic device 100 and extending the period of time during which a certain force is applied to the teeth so that tooth movement proceeds as planned, ultimately improving the speed and accuracy of tooth orthodontic treatment.

[0052] The application area of ​​the strength reinforcement part 130 for the transparent orthodontic body 110 according to each orthodontic treatment case will be described below. At this time, the explanation will be based on the mandibular molar area, and the technical features of the transparent orthodontic device applied to such mandibular molar area can be equally applied to the entire teeth.

[0053] FIG. 5 shows an application area of ​​a strength reinforcement portion using an expansion case according to one embodiment of the present invention.

[0054] According to one embodiment, in the case of an expansion case, the strength reinforcement portion 130 is configured to be formed on the lingual outer surface 111 of the transparent orthodontic body 110.

[0055] An expansion case is when orthodontic force is applied to the tooth to be corrected from the lingual side to the buccal side to move the tooth.

[0056] At this time, in order to move the tooth to be corrected from the lingual side to the buccal side, it is necessary to reinforce the thickness of the lingual outer surface 111 of the transparent orthodontic body 110. That is, by forming the strength reinforcement part 130 on the lingual outer surface 111 of the transparent orthodontic body 110, it is possible to compensate for the decrease in orthodontic force due to the occlusion part 120.

[0057] In the case of an expansion case, the occlusal portion 120 can be formed in consideration of the initial occlusal region 30 as well as an additional occlusal region (40) due to tooth movement.

[0058] FIG. 6 shows the application area of ​​the strength reinforcement portion of the retraction case according to one embodiment of the present invention.

[0059] According to one embodiment, in the case of a retraction case, the strength reinforcement portion 130 is configured to be formed on the outer surface 111 of the buccal side of the transparent orthodontic body 110.

[0060] Retraction Case refers to the case where orthodontic force is applied to the tooth to be corrected from the buccal side to the lingual side to move the tooth.

[0061] At this time, in order to move the tooth to be corrected from the buccal side to the lingual side, it is necessary to reinforce the thickness of the buccal outer surface 111 of the transparent orthodontic body 110. That is, by forming the strength reinforcement part 130 on the buccal outer surface 111 of the transparent orthodontic body 110, it is possible to compensate for the reduction in orthodontic force due to the occlusion part 120.

[0062] In the case of a retraction case, the occlusion portion 120 can be formed taking into consideration the initial occlusion area 30 as well as an additional occlusion area 40 due to tooth movement.

[0063] FIG. 7 shows an application area of ​​a strength reinforcement portion using an extrusion case according to one embodiment of the present invention.

[0064] According to one embodiment, in the case of an extrusion case, the strength reinforcement part 130 is configured to be formed on the outer surface 111 of the transparent orthodontic body 110, located proximal to the root of the tooth (below the maximum ridge L1 of the mandibular tooth) based on the maximum ridge L1 of the tooth. In this case, the maximum ridge L1 of the tooth refers to a line connecting the points where the tooth is most bulged laterally.

[0065] An extrusion case is a case in which orthodontic force is applied to the tooth in the extrusion direction from the root to move the tooth.

[0066] At this time, in order to move the tooth to be corrected in the extrusion direction, it is necessary to reinforce the thickness of the outer surface 111 located proximal to the root of the tooth (below the maximum ridge L1 based on the mandibular tooth) with reference to the tooth's maximum ridge L1. In other words, by forming the strength reinforcement portion 130 on the outer surface 111 located proximal to the root of the tooth (below the maximum ridge L1 based on the mandibular tooth), it is possible to compensate for the decrease in orthodontic force caused by the occlusion portion 120.

[0067] FIG. 8 shows an application area of ​​a strength reinforcement portion in an intrusion case according to one embodiment of the present invention.

[0068] According to one embodiment, in the case of an intrusion case, the strength reinforcement part 130 is configured to be formed on the outer surface 111 of the transparent orthodontic body 110, located distal to the root of the tooth (above the maximum ridge L1 of the mandibular tooth) based on the maximum ridge L1 of the tooth. In this case, the maximum ridge L1 of the tooth refers to a line connecting the points where the tooth bulges most in the lateral direction.

[0069] An intrusion case is a case in which an orthodontic force is applied to the tooth to be corrected in the direction of indentation to move the tooth.

[0070] At this time, in order to move the tooth to be corrected in the invagination direction, it is necessary to reinforce the thickness of the outer surface 111 located proximal to the root of the tooth (below the maximum ridge L1 of the mandibular tooth) based on the maximum ridge L1 of the tooth. In other words, by forming the strength reinforcement portion 130 on the outer surface 111 located distal to the root of the tooth (above the maximum ridge L1 of the mandibular tooth), it is possible to compensate for the decrease in orthodontic force caused by the occlusion portion 120.

[0071] FIG. 9 shows an application area of ​​a strength reinforcement portion of a rotation case according to one embodiment of the present invention.

[0072] According to one embodiment, in the case of a rotation case, the strength reinforcement parts 130 are configured to be formed on the outer surface 111 of the transparent orthodontic body 110, positioned diagonally opposite each other when a quadrant is set based on a groove line L2 formed on the occlusal surface of the tooth. In this case, the groove line L2 refers to a line connecting depressions formed on the opposing ends of the teeth that define the occlusal surface.

[0073] A rotation case refers to a case in which an orthodontic force is applied to a tooth to be orthodontic treated in a rotational direction to rotate the tooth.

[0074] In this case, when a quadrant is set based on a groove line L2 formed on the occlusal surface of the tooth in order to rotate the tooth to be corrected, it is necessary to reinforce the thickness of the outer surface 111 of the transparent orthodontic body 110 located diagonally from each other. That is, by forming the strength reinforcement part 130 on the outer surface 111 of the transparent orthodontic body 110 located diagonally from each other based on the groove line L2, it is possible to compensate for the reduction in orthodontic force due to the occlusal part 120.

[0075] FIG. 10 shows the application area of ​​the strength reinforcement portion using an angulation case according to one embodiment of the present invention.

[0076] According to one embodiment, in the case of an angulation case, the strength reinforcement part 130 is configured to be formed on the outer surface 111 of the mesial side of the transparent orthodontic body 110 located in one direction based on the maximum ridge line L1 of the tooth, and on the outer surface 111 of the distal side of the transparent orthodontic body 110 located in the other direction based on the maximum ridge line L1 of the tooth. In this case, the maximum ridge line L1 of the tooth means a line connecting the points where the tooth is most bulged laterally.

[0077] The angulation case refers to the case where orthodontic force is applied in the direction to adjust the inclination of the mesial-distal surface of the tooth.

[0078] At this time, in order to move the tooth to be corrected in the gradient adjustment direction, it is necessary to reinforce the thickness of the outer surface 111 on the mesial side of the transparent orthodontic body 110 located in one direction based on the maximum ridge line L1 of the tooth, and the thickness of the outer surface 111 on the distal side of the transparent orthodontic body 110 located in the other direction based on the maximum ridge line L1 of the tooth. That is, by forming the strength reinforcement part 130 in a specific region of the outer surface 111 on the mesial side and a specific region of the outer surface 111 on the distal side, it is possible to compensate for the reduction in orthodontic force caused by the occlusion part 120.

[0079] FIG. 11 shows an application area of ​​a strength reinforcement portion in a torque control case according to one embodiment of the present invention.

[0080] According to one embodiment, in the case of a torque control case, the strength reinforcement part 130 is configured to be formed on the lingual outer surface 111 of the transparent orthodontic body 110 located in one direction based on the maximum ridge line L1 of the tooth and on the buccal outer surface 111 of the transparent orthodontic body 110 located in the other direction based on the maximum ridge line L1 of the tooth. In this case, the maximum ridge line L1 of the tooth means a line connecting the points where the tooth is most bulged laterally.

[0081] Torque control case refers to the case where orthodontic force is applied in the direction that attempts to adjust the inclination of the lingual-buccal side of the teeth.

[0082] At this time, in order to move the tooth to be corrected in the gradient adjustment direction, it is necessary to reinforce the thickness of the lingual outer surface 111 of the transparent orthodontic body 110 located in one direction based on the maximum ridge line L1 of the tooth, and the thickness of the buccal outer surface 111 of the transparent orthodontic body 110 located in the other direction based on the maximum ridge line L1 of the tooth. That is, by forming the strength reinforcement part 130 in a specific region of the lingual outer surface 111 and a specific region of the buccal outer surface 111, it is possible to compensate for the reduction in orthodontic force due to the occlusion part 120.

[0083] Figure 12(a) is a plan view of a transparent orthodontic device according to another embodiment of the present invention, Figure 12(b) is a cross-sectional view of A-A' of Figure 12(a), Figure 13 is a diagram showing the occlusion of the upper and lower jaw teeth when a transparent orthodontic device according to another embodiment of the present invention is attached to the teeth, and Figure 14 is a diagram showing the occlusion of the upper and lower jaw teeth when a transparent orthodontic device including a strength reinforcement part according to another embodiment of the present invention is attached to the teeth.

[0084] The transparent correction device 100' according to the second embodiment will be described below with reference to Figures 12 to 14, focusing on the differences from the transparent correction device 100 according to the first embodiment. The details regarding the strength reinforcement part 130 described above can be equally applied to the transparent correction device 100' according to the second embodiment.

[0085] In the transparent correction device 100' according to the second embodiment of the present invention, the thickness of the occlusal portion 120' may be formed to be thicker than the thickness of the area other than the occlusal portion 120'.

[0086] The occlusal portion 120' is an area that is in constant contact with the opposing teeth. If the thickness of the occlusal portion 120' is made thicker than the thickness of areas other than the occlusal portion 120', durability can be improved and the tendency of the transparent orthodontic device 100' to spread in the buccal and lingual directions due to chewing pressure can be reduced, thereby improving the traction and retention force of the transparent orthodontic device 100'.

[0087] In addition, increasing the thickness of the occlusal portion 120' can induce earlier contact between the molar portion and the opposing tooth, thereby more efficiently inducing molar intrusion in orthodontic cases where molar intrusion is required.

[0088] According to one embodiment, the direction and angle of the occlusal surface of the occlusal portion 120' may be adjusted to induce intentional sliding movement of the mandible while engaging with the occlusal portion 120' attached to the opposing tooth. In this case, the direction in which the sliding movement of the mandible is induced may be an anterior direction in the case of Class II malocclusion, or a posterior direction in the case of Class III malocclusion.

[0089] According to one embodiment, the occlusal portion 120' may be formed to be parallel to the occlusal portion 120' attached to the opposing tooth. In other words, when the thickness of the occlusal portion 120' is adjusted to be parallel to the opposing tooth, in the case of a patient who grinds their teeth, transparent Wear on the orthodontic device 100' can be reduced and forces applied to the mandible can be reduced.

[0090] 13, when the upper and lower teeth 20a and 20b are in occlusion, they form an occlusion area 30. The transparent orthodontic device 100' includes a transparent orthodontic body 110 attached to the teeth and an occlusion portion 120' formed on the transparent orthodontic body 110 in a region corresponding to the occlusion area 30.

[0091] According to one embodiment, the transparent orthodontic body 110 may include a boundary that defines the occlusal portion 120' and may be configured to have an increased thickness adjacent to the occlusal portion 120'.

[0092] The occlusion area 30 may be set to include a marginal space so that the opposing teeth do not contact the boundary of the transparent orthodontic body 110 during occlusion, or so that the boundaries of the transparent orthodontic bodies 110 attached to the upper and lower jaws do not contact each other, taking into consideration not only vertical occlusion but also lateral occlusion. For example, the marginal space may be about 1 mm or more.

[0093] In this way, by making the occlusal portion 120' of the transparent orthodontic device 100' thicker, it is possible to induce early contact between the molar portion and the opposing tooth, thereby making it possible to induce molar intrusion more efficiently in orthodontic cases where intrusion of the molar portion is required.

[0094] The above description of the present invention is for illustrative purposes only, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments should be understood to be illustrative in all respects and not restrictive. For example, each component described as a single component can be implemented in a distributed form, and similarly, each component described as a distributed component can be implemented in a combined form.

[0095] The scope of the present invention is defined by the claims set forth below, and all modifications and variations that fall within the meaning and scope of the claims and their equivalent concepts should be construed as being included within the scope of the present invention. [Explanation of symbols]

[0096] 100, 100': Transparent orthodontic device 110: Transparent orthodontic body 111: External surface 112: Internal surface 113:Channel 120, 120': Occlusion 130: Strength reinforcement section 10a: Digital dental model of the upper jaw 10b: Digital dental model of the lower jaw 11a: Contact sites mapped on the maxilla 11b: Contact area mapped to the mandible 20a: Upper jaw teeth 20b: Lower teeth 30: Initial occlusal area 40:Additional occlusal area

Claims

1. a transparent orthodontic body having a channel formed therein for receiving the tooth to be corrected in order to move the tooth from an initial position to a target position; The transparent orthodontic body includes an occlusal portion defined thereon and positioned in an occlusal region that contacts an opposing tooth during occlusion; A transparent correction device, characterized in that the thickness of the occlusal portion is formed to be thicker than the thickness of the area other than the occlusal portion.

2. The transparent orthodontic device of claim 1 , wherein the transparent orthodontic body has an increased thickness adjacent to the occlusal portion.

3. 10. The transparent orthodontic device of claim 1, further comprising a strength reinforcement part conformally formed on an outer surface of the transparent orthodontic body located distal to the movement direction of the tooth to be corrected, to reinforce the orthodontic force.

4. The transparent orthodontic device according to claim 3, wherein in the case of an expansion case, the strength reinforcement part is formed on an outer surface of the lingual side of the transparent orthodontic body.

5. The transparent orthodontic device according to claim 3, wherein in the case of a retraction case, the strength reinforcement part is formed on an outer surface of a buccal side of the transparent orthodontic body.

6. 4. The transparent orthodontic device according to claim 3, wherein in the case of an extrusion case, the strength reinforcement part is formed on the outer surface of the transparent orthodontic body located proximal to the root of the tooth based on the maximum ridge of the tooth.

7. 4. The transparent orthodontic device according to claim 3, wherein in the case of an intrusion case, the strength reinforcement part is formed on the outer surface of the transparent orthodontic body located distal to the root of the tooth based on the maximum ridge of the tooth.

8. 4. The transparent orthodontic device according to claim 3, wherein in the case of a rotation case, the strength reinforcement parts are formed on the outer surface of the transparent orthodontic body diagonally positioned when quadrants are set based on groove lines formed on the occlusal surfaces of the teeth.

9. 4. The transparent orthodontic device according to claim 3, wherein in the case of an angulation case, the strength reinforcement part is formed on an outer surface of the mesial side of the transparent orthodontic body located in one direction based on the maximum ridge of the tooth, and an outer surface of the distal side of the transparent orthodontic body located in the other direction based on the maximum ridge of the tooth.

10. 4. The transparent orthodontic device according to claim 3, wherein in the case of a torque control case, the strength reinforcement part is formed on an outer surface of a lingual side of the transparent orthodontic body located in one direction based on the maximum ridge of the tooth and an outer surface of a buccal side of the transparent orthodontic body located in another direction based on the maximum ridge of the tooth.

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