Transparent correction device

Abstract

An embodiment of the present invention provides a transparent orthodontic device comprising: a transparent orthodontic body forming a passage for accommodating a tooth to be orthodontic in order to move the tooth from an initial position to a target position; and an occlusal part which is defined in the transparent orthodontic body and is located in an occlusal region in contact with an involution tooth during occlusal. And the thickness of the occlusion part is greater than the thickness of the area except the occlusion part.

Description

Technical Field

[0001] The invention relates to a transparent correction device. Background Art

[0002] Orthodontics is a treatment method used to treat irregular tooth arrangement or abnormal bite of the upper and lower jaws. Conventional orthodontics is performed by attaching orthodontic brackets made of harmless materials to the teeth and then applying force of orthodontic wires to the brackets to solve malocclusion. Conventional orthodontics using brackets and wires is performed with the brackets and wires fixed to the teeth, which is aesthetically unsightly and may cause oral hygiene problems.

[0003] In order to overcome this drawback, a new type of orthodontic behavior using transparent braces has recently emerged around the world. Transparent braces do not use brackets and wires, but use transparent polymer materials, so they have excellent aesthetics, and can be removed when necessary, which is also effective in maintaining oral hygiene. In addition, transparent braces have a relatively small foreign body sensation, so patients can easily accept dental correction.

[0004] Prior art literature

[0005] (Patent Document 1) Korean Patent Publication No. 10-1510857 (2015.04.03) Summary of the invention

[0006] (Problem to be solved)

[0007] The present invention is used to solve the above-mentioned problems of the prior art. The purpose of the present invention is to provide a transparent correction device that increases the thickness of the occlusal part to guide the intrusion of the posterior teeth or reduces the thickness of the occlusal part to prevent premature contact of the teeth.

[0008] (Methods of solving the problem)

[0009] In order to achieve the above-mentioned purpose, one aspect of the present invention provides a transparent correction device, comprising: a transparent correction body, which forms a channel for accommodating the tooth to be corrected in order to move the tooth to be corrected from an initial position to a target position; and an occlusal portion, which is defined in the transparent correction body and is located in the occlusal area in contact with the antagonist tooth when occluded; the thickness of the occlusal portion is greater than the thickness of the area other than the occlusal portion.

[0010] According to an embodiment of the present invention, the transparent correction device may be as follows, characterized in that the thickness of the transparent correction body increases as it becomes closer to the occlusal portion.

[0011] According to one embodiment of the present invention, the following transparent correction device can be provided, characterized in that it also includes a strength reinforcement part, which is conformally formed on the outer surface of the transparent correction body at a side away from the movement direction of the tooth to be corrected to reinforce the correction force.

[0012] According to an embodiment of the present invention, the transparent correction device may be characterized in that, in the case of an expansion shell, the strength reinforcement portion is formed on the outer surface of the lingual side of the transparent correction body.

[0013] According to an embodiment of the present invention, the transparent corrective device may be characterized in that, in the case of a retracted shell, the strength reinforcement portion is formed on the outer surface of the buccal side of the transparent corrective body.

[0014] According to one embodiment of the present invention, the transparent correction device can be as follows, characterized in that, in the case of an extruded shell, the strength reinforcement portion is formed on the outer surface of the transparent correction body located on the side close to the root of the tooth based on the maximum protrusion line of the tooth.

[0015] According to one embodiment of the present invention, the transparent correction device can be as follows, characterized in that, in the case of a recessed shell, the strength reinforcement portion is formed on the outer surface of the transparent correction body at a position away from the position of the root based on the maximum protrusion line of the tooth.

[0016] According to one embodiment of the present invention, a transparent correction device can be provided as follows, characterized in that, in the case of a rotating shell, the strength reinforcement portion is formed on the outer surface of the transparent correction body that is located in diagonal directions to each other when the quadrants are set based on the groove line formed on the occlusal surface of the tooth.

[0017] According to one embodiment of the present invention, the following transparent correction device can be provided, characterized in that, in the case of an angular shell, the strength reinforcement portion is formed on the outer surface of the mesial surface side of the transparent correction body located in one direction based on the maximum protrusion line of the tooth and on the outer surface of the terminal surface side of the transparent correction body located in another direction based on the maximum protrusion line of the tooth.

[0018] According to one embodiment of the present invention, the following transparent correction device can be provided, characterized in that, in the case of a torque control shell, the strength reinforcement portion is formed on the lingual side outer surface of the transparent correction body in one direction with the maximum protrusion line of the teeth as the reference and on the buccal side outer surface of the transparent correction body in another direction with the maximum protrusion line of the teeth as the reference.

[0019] (Effects of the Invention)

[0020] According to one aspect of the present invention, the transparent correction device according to the first embodiment of the present invention is to make the thickness of the occlusal portion smaller than the thickness of the area outside the occlusal portion so as to prevent premature contact of the teeth including the posterior teeth during occlusion. In addition, the bite force is reduced by reducing the thickness of the occlusal portion, thereby preventing the posterior teeth from intruding and opening the bite. Then, since the elastic force and the contact area increase as the thickness of the occlusal portion decreases, the traction force and the holding force can be increased. In addition, as the thickness of the occlusal portion decreases, the foreign body sensation during wearing can be reduced.

[0021] According to another aspect of the present invention, the transparent correction device according to the second embodiment of the present invention is that the thickness of the occlusal part is greater than the thickness of the area outside the occlusal part, and the occlusal force is increased, so that the posterior teeth can be guided to invade. Then, the thickness of the occlusal part is greater than the thickness of the area outside the occlusal part, which can reduce the tendency of the transparent correction device to expand in the buccal and lingual directions due to chewing pressure. In addition, if the thickness of the occlusal part is greater than the thickness of the area outside the occlusal part, the durability of the transparent correction device can be improved due to the increased strength. Then, the direction and angle of the occlusal surface of the occlusal part are adjusted to match the occlusal part installed on the antagonist while consciously guiding the sliding of the mandible, thereby helping the mandibular treatment of ClassⅡ, ClassⅢ, and malocclusion patients. In addition, if the thickness of the occlusal part is adjusted to be parallel to the occlusal part installed on the antagonist, in the case of patients with bruxism, the wear of the dental correction device can be reduced, and the force applied to the mandible can be reduced.

[0022] The effects of the present invention should be understood to include not only the effects described above but also all effects that can be inferred from the configuration of the invention described in the description of the present invention or the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 (a) is a plan view of a transparent correction device according to an embodiment of the present invention; Figure 1 (b) Yes Figure 1 (a) A-A' cross-section.

[0024] Figure 2 (a) is a maxillary tooth model showing the occlusal area marked according to an embodiment of the present invention; Figure 2 (b) shows a mandibular tooth model marking the occlusal area according to an embodiment of the present invention.

[0025] Figure 3 3. It is a diagram showing the occlusion of the maxillary teeth and the mandibular teeth when the transparent correction device according to one embodiment of the present invention is installed on the teeth.

[0026] Figure 4This is a diagram showing the occlusion of the maxillary teeth and the mandibular teeth when the transparent correction device including the strength reinforcement part according to one embodiment of the present invention is installed on the teeth.

[0027] Figure 5 The applicable area of ​​the strength reinforcement portion of the expansion shell according to an embodiment of the present invention is shown.

[0028] Figure 6 The applicable area of ​​the strength reinforcement portion of the retractable shell according to an embodiment of the present invention is shown.

[0029] Figure 7 The applicable area of ​​the strength reinforcement portion of the extruded shell according to an embodiment of the present invention is shown.

[0030] Figure 8 The applicable area of ​​the strength reinforcement portion of the recessed shell according to an embodiment of the present invention is shown.

[0031] Fig. 9 The applicable area of ​​the strength reinforcement portion of the rotating shell according to an embodiment of the present invention is shown.

[0032] Fig.10 The applicable area of ​​the strength reinforcement portion of the angular shell according to an embodiment of the present invention is shown.

[0033] Fig.11 The applicable area of ​​the strength reinforcement portion of the torque control housing according to an embodiment of the present invention is shown.

[0034] Fig.12 (a) shows a plan view of a transparent correction device according to another embodiment of the present invention; Fig.12 (b) Yes Fig.12 (a) A-A' cross-section.

[0035] Fig.13 It is a diagram showing the occlusion of the maxillary teeth and the mandibular teeth when the transparent correction device according to another embodiment of the present invention is installed on the teeth.

[0036] Fig.14 This is a diagram showing the occlusion of the maxillary teeth and the mandibular teeth when a transparent correction device including a strength reinforcement part according to another embodiment of the present invention is installed on the teeth.

[0037] (Explanation of Reference Numerals)

[0038] 100, 100': Transparent correction device

[0039] 110: Transparent correction subject

[0040] 111: External surface

[0041] 112: Internal surface

[0042] 113: Channel

[0043] 120, 120': Occlusion

[0044] 130: Strength reinforcement

[0045] 10a: Digital dental model of the upper jaw

[0046] 10b: Digital dental model of the lower jaw

[0047] 11a: Contact site mapped in the maxilla

[0048] 11b: Contact site mapped on the mandible

[0049] 20a: maxillary teeth

[0050] 20b: Mandibular teeth

[0051] 30: Initial bite area

[0052] 40: Additional bite area DETAILED DESCRIPTION

[0053] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various forms and is not limited to the embodiments described herein. Then, in order to clearly describe the present invention, parts not related to the description are omitted in the accompanying drawings, and the same reference numerals are given to the same or similar components throughout the specification.

[0054] Throughout the specification, when a part is "connected" to another part, it means not only "direct connection" but also "indirect connection" with other components interposed therebetween. In addition, when a part "includes" a certain component, unless there is a special statement to the contrary, it does not mean that other components are excluded, but other components may also be included.

[0055] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0056] There are two types of orthodontics: fixed orthodontics, which uses the elasticity of wires to attach brackets made of hard materials such as metal, resin, and ceramic to teeth, and detachable orthodontics, which uses detachable and elastic orthodontic devices. In particular, transparent orthodontics, which is one of the detachable orthodontic methods, covers the teeth with transparent orthodontic devices made of transparent materials, so the orthodontic devices cannot be seen from the outside. Moreover, they can be freely detached, so they are easy to wear and are more popular than other orthodontic methods. Transparent orthodontic devices should be made of elastic materials so that they can be worn and removed.

[0057] Figure 1 (a) is a plan view of a transparent correction device according to an embodiment of the present invention; Figure 1 (b) Yes Figure 1 (a) A-A' cross-section.

[0058] The transparent correction device 100 is produced in the following manner: virtual treatment target data is set based on the initial data of the patient's teeth, and then intermediate data of each stage is generated so that the teeth can gradually move from the initial position to the target position, and the intermediate data and target data of each step are output indirectly or directly.

[0059] The indirect output method includes the following steps: the device for designing the transparent correction device 100 outputs a preset tooth model; the device for manufacturing the transparent correction device 100 uses the preset model as a tooth mold, and performs vacuum molding by pressurizing a sheet of transparent material covering the tooth mold. That is, the transparent correction device 100 according to the indirect output method is manufactured by vacuum molding using a molding sheet. The preset model refers to the creation of an orthodontic diagnosis and treatment plan from the patient's tooth model before the correction treatment, and the teeth are moved into the ideal shape tooth arrangement data according to the treatment plan.

[0060] The direct output method is a method in which a transparent correction device is directly manufactured by a device that designs the transparent correction device without manufacturing the device, and includes the following steps: generating a transparent correction device model; and directly outputting the transparent correction device model through a 3D device such as a 3D printer. That is, the transparent correction device 100 according to the direct output method can be manufactured through a 3D device such as a 3D printer.

[0061] The transparent correction device 100 can be used in various shells such as expansion, retraction, extrusion, depression, rotation, etc., in order to wrap the mandibular teeth or maxillary teeth to be corrected so as to arrange them from the initial position to the target position. That is, the transparent correction device 100 is used to cover the teeth of the patient, and can be manufactured and applied according to each stage in consideration of the maximum movement amount of the teeth to be corrected.

[0062] The transparent orthodontic device 100 may be made of an elastic material. The elasticity or shape-retaining force of the transparent orthodontic device 100 provides a force in a predetermined direction to the teeth, thereby moving the teeth from an initial position to a target position.

[0063] According to one embodiment, the transparent correction device 100 may include one or more selected from the group consisting of polycarbonate, polyethylene terephthalate, polyurethane, and polyethylene terephthalate glycol modified. According to another embodiment, the transparent correction device 100 may be made of a polymer material or an elastic polymer.For example, the polymeric material or elastomeric polymer may include natural rubber such as cis-1,4-polyisoprene natural rubber and trans-1,4-polyisoprene gutta-percha, synthetic polyisoprene, polybutadiene, chloroprene rubber, polychloroprene, neopren, baypren, butyl rubber, halogenated butyl rubber, styrene-butadiene rubber, nitrile rubber, halogenated nitrile rubber, ethylene propylene rubber, ethylene propylene-diene rubber, epichlorohydrin rubber, polyacrylate rubber, silicone rubber, The transparent correction device 100 may be made of a material having desired physical properties such as transparency, elasticity, etc., in order to achieve the function of the transparent correction device 100.

[0064] Reference Figure 1The transparent correction device 100 of the present invention includes a transparent correction body 110. The transparent correction body 110 has an outer surface 111, an inner surface 112, and a channel 113, and the channel 113 is defined by the inner surface 112 and accommodates the teeth. That is, the transparent correction body 110 is put on the teeth to move from the initial position of the teeth to be corrected to the target position of each stage. At this time, the transparent correction body 110 may have a concave shape reflecting the target position of each stage of the correction treatment.

[0065] According to one embodiment, the transparent orthodontic device 100 includes an occlusal portion 120. The occlusal portion 120 is defined on the transparent orthodontic body and may form an occlusal region that contacts the opposing teeth when occluding. The occlusal portion 120 may vary in position on the transparent orthodontic device 100 according to the occlusal region of the transparent orthodontic device 100 that is manufactured according to each stage of correction treatment.

[0066] On the other hand, the thickness of the bite portion 120 may be smaller than the thickness of the region other than the bite portion 120 .

[0067] In the case of existing transparent correction devices, the transparent correction body of the occlusal part has the same thickness, so the posterior teeth and the antagonist teeth may come into contact prematurely due to the thickness of the occlusal part when biting. If the posterior teeth and the antagonist teeth come into contact prematurely, a force that presses down the teeth is generated. If this force continues, unexpected posterior teeth intrusion or negative consequences may occur in the jaw joint. In addition, an open bite may also occur due to the thickness of the occlusal part.

[0068] That is, the transparent correction device 100 of the present invention is to make the thickness of the occlusal part 120 smaller than the thickness of the area outside the occlusal part 120, thereby preventing premature contact of teeth including the posterior teeth during occlusion, thereby preventing the posterior teeth from intruding and open bite.

[0069] On the other hand, if the thickness of the transparent orthodontic device 100 on the anterior teeth side is formed thicker and the thickness of the occlusal portion 120 on the posterior teeth side is formed thinner, the intrusion of the anterior teeth can be guided.

[0070] Figure 2 (a) is a maxillary tooth model showing the occlusal area marked according to an embodiment of the present invention; Figure 2 (b) shows a mandibular tooth model marking the occlusal area according to an embodiment of the present invention.

[0071] Reference Figure 1 and Figure 2, the occlusal portion 120 can be formed on the transparent correction body 110 based on the contact parts 11a and 11b mapped by the digital tooth model 10a of the upper jaw and the digital tooth model 10b of the lower jaw. Mapping refers to visualizing the contact parts 11a and 11b to distinguish the contact parts 11a and 11b according to the contact strength of the maxillary teeth and the mandibular teeth. That is, the boundary defining the occlusal portion 120 can be formed based on the contact parts 11a and 11b mapped according to the contact strength. In this way, the occlusal portion 120 is more accurately formed in the occlusal area of ​​the transparent correction body 110, thereby preventing the teeth from contacting prematurely.

[0072] Figure 3 3. It is a diagram showing the occlusion of the maxillary teeth and the mandibular teeth when the transparent correction device according to one embodiment of the present invention is installed on the teeth.

[0073] The following examples are mainly based on the posterior teeth. However, the technical characteristics of the transparent correction device applicable to the posterior teeth can also be applied to all teeth.

[0074] Reference Figure 3 When the maxillary teeth 20a and the mandibular teeth 20b are occluded, an occlusal area 30 is formed. The transparent correction device 100 includes a transparent correction body 110 and an occlusal part 120. The transparent correction body 110 is installed on the teeth, and the occlusal part 120 is formed in the transparent correction body 110 at an area corresponding to the occlusal area 30.

[0075] According to an embodiment, the transparent corrective body 110 includes a boundary defining the bite portion 120 , and may be configured to have a thickness that decreases as it becomes closer to the bite portion 120 .

[0076] The occlusal area 30 is a space that takes into account not only vertical occlusion but also lateral occlusion, and can be set to include a redundant space so that the opposing teeth do not contact the boundary of the transparent correction body 110 or the boundaries of the transparent correction body 110 installed in the upper and lower jaws do not contact each other during occlusion. For example, the redundant space can be approximately 1 mm or more.

[0077] As described above, the occlusal portion 120 of the transparent orthodontic device 100 is formed to be thinner, thereby preventing the transparent orthodontic device 100 from coming into contact with the opposing teeth prematurely due to the thickness of the occlusal surface side during occlusion.

[0078] Figure 4 This is a diagram showing the occlusion of the maxillary teeth and the mandibular teeth when the transparent correction device including the strength reinforcement part according to one embodiment of the present invention is installed on the teeth.

[0079] Reference Figure 4, the transparent correction device 100 of the present invention may further include a strength reinforcement part 130. At this time, the occlusal part 120 of the transparent correction device 100 is formed with a thinner thickness, thereby reducing the correction force acting on the teeth. Therefore, since the strength reinforcement part 130 is also formed in the transparent correction device 100, the correction force that can be reduced by the occlusal part 120 can be compensated. That is, the strength reinforcement part 130 can be formed on the outer surface 111 of the transparent correction body 110 adjacent to the occlusal part 120.

[0080] The strength reinforcement part 130 can be formed by reinforcing the thickness of a specific area of ​​the transparent correction body 100 according to various cases of correction treatment. That is, the strength reinforcement part 130 is configured to make the force-applying area of ​​the transparent correction device 100 thicker than the area where it is not applied, thereby transmitting sufficient force to the teeth at the corresponding position.

[0081] The strength reinforcement part 130 is made of the same material as the transparent correction body 110, or is made separately from the transparent correction body 110 with a different material, and can be conformally combined with the transparent correction body 110. In this case, for example, the strength reinforcement part 130 can also be formed into one piece with the transparent correction body 110 using a 3D printer.

[0082] The strength reinforcing part 130 may be formed only on any part of the outer surface 111 of the transparent corrective body 110, and the other part of the outer surface 111 of the transparent corrective body 110 may be directly exposed to the outside. At this time, in order to minimize the foreign body feeling at the boundary with the outer surface 111 of the transparent corrective body 110 where the strength reinforcing part 130 is not formed, the strength reinforcing part 130 may be formed in a cone shape, a blade shape, or a wedge shape.

[0083] According to one embodiment, the strength reinforcement part 130 is formed on the outer surface 111 of the transparent correction body 110 at a position side away from the moving direction of the tooth to be corrected. That is, the strength reinforcement part 130 is configured to strengthen the correction force toward the target moving direction of the tooth to be corrected.

[0084] Thus, the strength reinforcement part 130 minimizes the deformation of the transparent correction device 100 and prolongs the period of applying a predetermined force to the teeth, so that the tooth movement can proceed as planned, thereby improving the tooth movement and tooth movement speed. Ultimately, the speed and accuracy of tooth correction can be improved.

[0085] The following describes the area where the strength reinforcement part 130 is applied to the transparent correction body 110 according to each correction treatment case. At this time, the description is based on the mandibular posterior teeth, and the technical features of the transparent correction device applied to the mandibular posterior teeth can also be applied to all teeth.

[0086] Figure 5 The applicable area of ​​the strength reinforcement portion of the expansion shell according to an embodiment of the present invention is shown.

[0087] According to one embodiment, in the case of an expansion shell, the strength reinforcement portion 130 is configured to be formed on the lingual side outer surface 111 of the transparent correction body 110 .

[0088] The expansion shell refers to the process of applying a correction force from the lingual side to the buccal side to the tooth to be corrected to move the tooth.

[0089] 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 side outer surface 111 of the transparent correction body 110. That is, by forming the strength reinforcement part 130 on the lingual side outer surface 111 of the transparent correction body 110, the correction force reduction caused by the occlusal part 120 can be compensated.

[0090] In the case of an expanded shell, the occlusal portion 120 may be formed by adding an occlusal region 40 to the initial occlusal region 30 in consideration of tooth movement.

[0091] Figure 6 The applicable area of ​​the strength reinforcement portion of the retractable shell according to an embodiment of the present invention is shown.

[0092] According to one embodiment, in the case of a retractable shell, the strength reinforcement portion 130 is configured to be formed on the buccal side outer surface 111 of the transparent corrective body 110 .

[0093] The retracted shell refers to a situation where a correction force is applied to the tooth to be corrected from the buccal side to the lingual side to move the tooth.

[0094] 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 side outer surface 111 of the transparent correction body 110. That is, by forming the strength reinforcement part 130 on the buccal side outer surface 111 of the transparent correction body 110, the correction force reduction caused by the occlusal part 120 can be compensated.

[0095] In the case of the retracted shell, the occlusal portion 120 may be formed by adding an occlusal region 40 to the initial occlusal region 30 in consideration of tooth movement.

[0096] Figure 7 The applicable area of ​​the strength reinforcement portion of the extruded shell according to an embodiment of the present invention is shown.

[0097] According to one embodiment, in the case of an extruded shell, the strength reinforcement portion 130 is configured as an outer surface 111 of the transparent correction body 110 located on the side close to the root of the tooth (based on the mandibular teeth, below the maximum protrusion line L1). At this time, the maximum protrusion line L1 of the tooth refers to a line connecting the maximum bulge points of the tooth sideways.

[0098] The extrusion shell refers to the situation where a correction force is applied to the tooth to be corrected in the extrusion direction from the root to move the tooth.

[0099] 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 on the side close to the tooth root (based on the mandibular teeth, below the maximum protrusion line L1) with respect to the maximum protrusion line L1 of the tooth. That is, by forming the strength reinforcement part 130 on the outer surface 111 located on the side close to the tooth root (based on the mandibular teeth, below the maximum protrusion line L1), the reduction in correction force caused by the occlusal part 120 can be compensated.

[0100] Figure 8 The applicable area of ​​the strength reinforcement portion of the recessed shell according to an embodiment of the present invention is shown.

[0101] According to one embodiment, in the case of a concave shell, the strength reinforcement portion 130 may be configured to be formed on the outer surface 111 of the transparent correction body 110 located on the side away from the root of the tooth based on the maximum protrusion line L1 of the tooth (based on the mandibular teeth, on the upper side of the maximum protrusion line L1). At this time, the maximum protrusion line L1 of the tooth refers to a line connecting the maximum lateral protrusion points of the tooth.

[0102] A concave shell refers to a situation where a correction force in a concave direction is applied to the tooth to be corrected to move the tooth.

[0103] At this time, in order to move the tooth to be corrected in the concave direction, it is necessary to reinforce the thickness of the outer surface 111 located on the side close to the tooth root (based on the mandibular teeth, the lower side of the maximum protrusion line L1). That is, by forming the strength reinforcement part 130 on the outer surface 111 located on the side away from the tooth root (based on the mandibular teeth, the upper side of the maximum protrusion line L1), the correction force reduction caused by the occlusal part 120 can be compensated.

[0104] Fig. 9 The applicable area of ​​the strength reinforcement portion of the rotating shell according to an embodiment of the present invention is shown.

[0105] According to one embodiment, in the case of the rotating shell, the strength reinforcement part 130 is configured to be formed on the outer surface 111 of the transparent correction body 110 located in the diagonal direction when the quadrant is set based on the groove line L2 formed on the occlusal surface of the tooth. At this time, the groove line L2 refers to a line connecting the concave points formed on the edges facing each other in the edges of the teeth defining the occlusal surface into a straight line.

[0106] Rotational shell refers to the situation where a correction force in a rotational direction is applied to the tooth to be corrected to rotate the tooth.

[0107] At this time, in order to rotate the tooth to be corrected, it is necessary to reinforce the thickness of the outer surface 111 of the transparent correction body 110 located in the diagonal direction when the quadrant is set based on the groove line L2 formed on the occlusal surface of the tooth. That is, by forming the strength reinforcement part 130 on the outer surface 111 of the transparent correction body 110 located in the diagonal direction with respect to the groove line L2, the correction force reduction caused by the occlusal part 120 can be compensated.

[0108] Fig.10 The applicable area of ​​the strength reinforcement portion of the angular shell according to an embodiment of the present invention is shown.

[0109] According to one embodiment, in the case of an angular shell, the strength reinforcement portion 130 is configured to be formed on the mesial surface side outer surface 111 of the transparent correction body 110 located in one direction based on the maximum protrusion line L1 of the tooth and the distal surface side outer surface 111 of the transparent correction body 110 located in another direction based on the maximum protrusion line L1 of the tooth. In this case, the maximum protrusion line L1 of the tooth refers to a line connecting the maximum lateral protrusion points of the tooth.

[0110] An angular shell refers to a case where a corrective force is applied in a direction to adjust the inclination of the mesial-distal surface of the tooth.

[0111] At this time, in order to adjust the tooth to be corrected in the inclination adjustment direction, it is necessary to reinforce the thickness of the mesial surface side outer surface 111 of the transparent correction body 110 located in one direction based on the maximum protrusion line L1 of the tooth and the thickness of the distal surface side outer surface 111 of the transparent correction body 110 located in another direction based on the maximum protrusion line L1 of the tooth. That is, by forming the strength reinforcement part 130 in a specific area of ​​the mesial surface side outer surface 111 and a characteristic area of ​​the distal surface side outer surface 111, the correction force reduction caused by the occlusal part 120 can be compensated.

[0112] Fig.11 The applicable area of ​​the strength reinforcement portion of the torque control housing according to an embodiment of the present invention is shown.

[0113] According to one embodiment, in the case of a torque control shell, the strength reinforcement portion 130 is formed on the lingual side outer surface 111 of the transparent correction body 110 located in one direction based on the maximum protrusion line L1 of the teeth and on the buccal side outer surface 111 of the transparent correction body 110 located in another direction based on the maximum protrusion line L1 of the teeth. In this case, the maximum protrusion line L1 of the teeth refers to a line connecting the maximum protrusion points of the teeth.

[0114] The torque control shell refers to the case where the correction force is applied in the direction in which the inclination of the lingual-buccal surface of the tooth is to be adjusted.

[0115] At this time, in order to move the tooth to be corrected in the inclination adjustment direction, it is necessary to reinforce the thickness of the lingual side outer surface 111 of the transparent correction body 110 located in one direction based on the maximum protrusion line L1 of the tooth and the thickness of the buccal side outer surface 111 of the transparent correction body 110 located in another direction based on the maximum protrusion line L1 of the tooth. That is, by forming the strength reinforcement part 130 in a specific area of ​​the lingual side outer surface 111 and a specific area of ​​the buccal side outer surface 111, the correction force reduction caused by the occlusal part 120 can be compensated.

[0116] Fig.12 (a) shows a plan view of a transparent correction device according to another embodiment of the present invention; Fig.12 (b) Yes Fig.12 (a) A-A' cross-section; Fig.13 is a diagram showing the occlusion of the upper teeth and the lower teeth in a state where a transparent correction device according to another embodiment of the present invention is installed on the teeth; Fig.14 This is a diagram showing the occlusion of the maxillary teeth and the mandibular teeth when a transparent correction device including a strength reinforcement part according to another embodiment of the present invention is installed on the teeth.

[0117] Below, refer to Figure 12 to Figure 14 , a transparent correction device 100' according to the second embodiment is described. The description is mainly based on the differences from the transparent correction device 100 of the first embodiment. The above-mentioned content related to the strength reinforcement part 130 can also be applied to the transparent correction device 100' of the second embodiment.

[0118] According to the second embodiment of the transparent correction device 100 ′ of the present invention, the thickness of the bite portion 120 ′ may be greater than the thickness of the area outside the bite portion 120 ′.

[0119] The occlusal portion 120' is an area that is in continuous contact with the opposing teeth. If the thickness of the occlusal portion 120' is greater than the thickness of the area outside the occlusal portion 120', the durability can be improved, and the tendency of the transparent corrective device 100' to expand in the opposite direction toward the buccal and lingual sides due to chewing pressure can be reduced, thereby improving the traction force and retention force of the transparent corrective device 100'.

[0120] In addition, if the thickness of the occlusal portion 120 ′ is increased, the posterior teeth can be guided to come into contact with the antagonist teeth prematurely, thereby more effectively guiding the posterior teeth to be recessed in correction cases requiring the posterior teeth to be recessed.

[0121] According to one embodiment, the direction and angle of the occlusal surface of the occlusal portion 120' are adjusted to match the occlusal portion 120' installed on the antagonist and guide the mandibular movement consciously. At this time, the sliding direction of the mandibular is guided to the front direction in the case of Class II malocclusion and to the back direction in the case of Class III malocclusion.

[0122] According to one embodiment, the occlusal portion 120' may be formed to be parallel to the occlusal portion 120' installed on the antagonist. That is, if the thickness of the occlusal portion 120' is adjusted to be parallel to the antagonist, the wear of the orthodontic device 100' can be reduced in the case of patients who grind their teeth, and the force applied to the mandible can be reduced.

[0123] Reference Fig.13 The upper teeth 20a and the lower teeth 20b form an occlusal area 30 when they are occluded. The transparent correction device 100' comprises a transparent correction body 110 and an occlusal part 120'. The transparent correction body 110 is installed on the teeth. The occlusal part 120' is formed in the transparent correction body 110 at a region corresponding to the occlusal area 30.

[0124] According to an embodiment, the transparent corrective body 110 includes a boundary defining the engaging portion 120 ′, and may be configured to have a thickness that increases as it becomes closer to the engaging portion 120 ′.

[0125] The occlusal area 30 is a space that takes into account not only vertical occlusion but also lateral occlusion, and can be set to include a redundant space so that the opposing teeth do not contact the boundary of the transparent correction body 110 or the boundaries of the transparent correction body 110 installed in the upper and lower jaws do not contact each other during occlusion. For example, the redundant space can be approximately 1 mm or more.

[0126] As described above, since the thickness of the occlusal portion 120 ′ of the transparent orthodontic device 100 ′ is increased, the posterior teeth can be guided to come into premature contact with the antagonist teeth, thereby more effectively guiding the posterior teeth to be recessed in correction cases requiring the posterior teeth to be recessed.

[0127] The above description of the present invention is for illustrative purposes only, and a person with ordinary knowledge in the technical field to which the present invention belongs may understand that the present invention may be easily transformed into other specific forms without changing the technical concept or essential features of the present invention. Therefore, the embodiments described above should only be understood as being exemplary in all aspects and not restrictive. For example, each component described in singular form may also be implemented in a dispersed manner, and similarly, components described as dispersed may also be implemented in the form of a combined component.

[0128] The scope of the present invention should be reflected by the claims, and all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

1. A transparent correction device, comprising: A transparent correction body, in order to move the tooth to be corrected from the initial position to the target position, forms a channel for accommodating the tooth; and An occlusal portion, defined on the transparent correction body and located in an occlusal area in contact with the opposing teeth when occluding; The thickness of the bite portion is greater than the thickness of a region other than the bite portion.

2. The transparent correction device according to claim 1, characterized in that: The transparent correction body has a thickness that increases as it becomes closer to the occlusal portion.

3. The transparent correction device according to claim 1, characterized in that: Also includes: The strength reinforcing portion is formed conformally on the outer surface of the transparent correction body at a position side away from the moving direction of the tooth to be corrected to reinforce the correction force.

4. The transparent correction device according to claim 3, characterized in that: In the case of an expansion shell, the strength-reinforcing portion is formed on the lingual-side outer surface of the transparent corrective body.

5. The transparent correction device according to claim 3, characterized in that: In the case of a retractable shell, the strength reinforcement is formed on the buccal outer surface of the transparent corrective body.

6. The transparent correction device according to claim 3, characterized in that: In the case of an extruded shell, the strength-reinforcing portion is formed on the outer surface of the transparent correction body located on the side of a position close to a tooth root based on the maximum protrusion line of the tooth.

7. The transparent correction device according to claim 3, characterized in that: In the case of the concave shell, the strength reinforcing portion is formed on the outer surface of the transparent correction body at a position on the side away from the position of the tooth root based on the maximum protrusion line of the tooth.

8. The transparent correction device according to claim 3, characterized in that: In the case of the rotating shell, the strength reinforcing portion is formed on the outer surface of the transparent correction body located in diagonal directions to each other when the quadrants are set based on the groove line formed on the occlusal surface of the tooth.

9. The transparent correction device according to claim 3, characterized in that: In the case of an angular shell, the strength reinforcement portion is formed on the mesial surface side outer surface of the transparent correction body located in one direction based on the maximum protrusion line of the tooth and on the distal surface side outer surface of the transparent correction body located in another direction based on the maximum protrusion line of the tooth.

10. The transparent correction device according to claim 3, characterized in that: In the case of the torque control shell, the strength reinforcement portion is formed on the lingual side outer surface of the transparent correction body in one direction with the maximum protrusion line of the teeth as the reference, and on the buccal side outer surface of the transparent correction body in another direction with the maximum protrusion line of the teeth as the reference.

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