KR20210141160A - Orthodontic device - Google Patents

Abstract

An orthodontic device according to one embodiment is an orthodontic device for reducing an extraction space between a pair of adjacent teeth, which comprises: a fixture for fixing movement of each crown of the pair of teeth; and a movement inducing body for inducing movement of each root of tooth of the pair of teeth, wherein the fixture comprises a support unit which is disposed in the extraction space and supports each crown of the pair of teeth in a direction away from the pair of teeth. The movement inducing body may comprise a traction unit for traction of each crown neck portion of the pair of teeth in a direction in which the pair of teeth approaches toward the extraction space.

Description

orthodontic device {ORTHODONTIC DEVICE}

Hereinafter, embodiments relate to an orthodontic device.

Tooth movement appears as a result of the tissue reaction of the periodontal ligaments attached to the root of the tooth. That is, when a force is applied to a tooth, tooth movement occurs due to bone deposition and bone remodeling due to the action of osteoblasts and osteoclasts of the periodontal ligament. In consideration of this point, a straightening device using a bracket and a plastic transparent straightening device are being used. For example, Korean Patent Publication No. 10-2019-0143823 discloses a removable orthodontic device. An orthodontic appliance using a bracket uses the elasticity of a wire inserted into the bracket, and a transparent orthodontic appliance uses the elasticity of plastic to move teeth by 0.25 mm. An orthodontic appliance or a transparent orthodontic appliance using a bracket is used in such a way that, when moving teeth, the crown part is first moved and then the root part is moved. This makes it difficult to move the tooth root because the movement distance of the tooth root is relatively increased when the crown moves first.

An object according to an embodiment is to provide an orthodontic device that effectively reduces the extraction space by sequentially moving the root and crown.

An orthodontic device according to an embodiment is an orthodontic device for reducing an extraction space between a pair of adjacent teeth, comprising: a fixture for fixing the movement of each crown of the pair of teeth; and a movement derivative for inducing movement of the root of each of the pair of teeth, wherein the fixture is disposed in the extraction space and each crown of the pair of teeth in a direction away from the pair of teeth Including a support for supporting the, the movable derivative may include a traction unit for pulling each of the crowns of the pair of teeth in a direction in which the pair of teeth approaches toward the extraction space.

The fixture may further include a rigidity holding part installed on the support part and maintaining the rigidity of the support part.

The rigid holding part may include: a first length region extending in a longitudinal direction; a second length region extending from a first end of the first length region in a direction intersecting a direction in which the first length region extends; and a third length region extending from a second end opposite to the first end of the first length region in a direction intersecting a direction in which the second length region extends, wherein the support portion comprises: the second length region a first opening for receiving; and a second opening accommodating the third length region.

The second length region may be removably received in the first opening, and the third length region may be removably received in the second opening.

The first length region may be disposed on the support part.

The moving guide may include a holder for holding the traction unit.

The holder includes a first pole and a second pole, the first pole, the first base installed in the crown of the first tooth of the pair of teeth; and a first protrusion that protrudes from the first base and is connected to the first end of the traction unit, wherein the second pole includes: a second base installed in the crown of a second tooth among the pair of teeth; and a second protrusion protruding from the second base and connected to the second end of the traction unit.

The traction portion may be configured to change between a non-stretched, unstressed first configuration and a stressed second configuration that expands and engages the first and second projections.

The support part and the traction part may be formed of an elastically deformable material, and the rigidity of the support part may be greater than that of the traction part.

The support portion may be disposed to be spaced apart from the bottom portion of the extraction space between the pair of teeth.

The support portion, the upper portion in contact with the region constituting the crown of the pair of teeth; and a lower portion in contact with a region excluding a region constituting the crown of the pair of teeth, wherein a rigidity of the upper portion is greater than a rigidity of the lower portion, and the elasticity of the lower portion is the elasticity of the upper portion can be larger

Orthodontic apparatus according to an embodiment can effectively reduce the extraction space without using a conventional bracket.

Effects of the correction device according to an embodiment are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a view of an example to which a calibration device according to an embodiment is applied.
2 is a perspective view of an orthodontic device according to an embodiment.
Figure 3 is an exploded perspective view of the orthodontic device according to an embodiment.
4 is a front view of the orthodontic device according to an embodiment.
5 is a front view of an orthodontic device according to another embodiment.
6 to 9 are diagrams for explaining a procedure of using a calibration device according to an embodiment.
10 is a flowchart illustrating a method of using a calibration device according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

The terms used in the examples are used for description purposes only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In the description of the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, a description described in one embodiment may be applied to another embodiment, and a detailed description in the overlapping range will be omitted.

1 to 4 , the orthodontic apparatus 10 according to an embodiment may be used to reduce the extraction space TS between a pair of adjacent teeth T1 and T2. The conventional tooth movement method for orthodontics uses the principle of moving the root of the tooth after first moving the crown of the tooth. In this method, when the crown is moved during the process of reducing the extraction space, there is a problem in that the root moves in the opposite direction to the movement direction of the crown. The orthodontic apparatus 10 according to an embodiment may solve a root movement problem that may occur as the crown TC is moved throughout the entire orthodontic process.

The orthodontic device 10 may include a fixed body 110 and a moving guide 120 . The fixture 110 may fix the movement of each crown TC of the pair of teeth T1 and T2. The movement derivative 120 may induce movement of each root of the pair of teeth T1 and T2 .

The fixture 110 may include a support 111 and a rigid retainer 115 .

The support 111 may support the respective crowns TC of the pair of teeth T1 and T2 in a direction in which the pair of teeth T1 and T2 move away from the extraction space TS. In addition, the support 111 may apply a force F1 to each of the crowns TC of the pair of teeth T1 and T2 in a direction away from the extraction space TS. This is advantageous in substantially suppressing the movement of the crown TC and allowing only the movement of the root while the pair of teeth T1 and T2 move toward the extraction space TS.

The support 111 may have a shape suitable for being disposed in the extraction space TS. For example, the support 111 may have a hexahedral shape having substantially rounded corners. The support 111 may have a height and a width capable of contacting the crown TC of each of the pair of teeth T1 and T2 in the extraction space TS.

The support 111 may be disposed in the extraction space (TS) and close the extraction space (TS). For example, the support 111 may be disposed to be spaced apart from the bottom portion of the extraction space TS between the pair of teeth T1 and T2.

The support part 111 may be formed of an elastically deformable material. For example, the support 111 may be formed of a material such as rubber. The support 111 may have relatively strong rigidity.

The support part 111 may include a first opening 112 and a second opening 113 .

The first opening 112 and the second opening 113 may accommodate at least a portion of the rigid holding part 115 . For example, the first opening 112 accommodates an area of a set length extending from a first end of the rigid retaining portion 115 toward a second end opposite the first end, and the second opening 113 . can accommodate an area of a set length extending from the second end toward the first end of the rigid holding portion 115 .

The first opening 112 and the second opening 113 may have a substantially circular shape, but are not limited thereto, and may have a shape corresponding to the shape of the cross-section of the rigid holding part 115 .

The first opening 112 is formed adjacent to the first end of the support part 111 in contact with the first tooth T1 among the adjacent pair of teeth T1 and T2, and the second opening 113 has one The pair of teeth T1 and T2 may be formed adjacent to the second end of the support 111 in contact with the second tooth T2. The first opening 112 and the second opening 113 are formed along the height direction of the support part 111 , but may not pass through the support part 111 .

The rigidity maintenance part 115 may be installed on the support part 111 to maintain the rigidity of the support part 111 . The rigid holding part 115 has a shape extending in a substantially longitudinal direction and may be bent. The rigidity holding part 115 may include a first length area 115A, a second length area 115B, and a third length area 115C.

The first length region 115A may extend in the longitudinal direction. The second length region 115B may extend from the first end of the first length region 115A in a direction crossing the direction in which the first length region 115A extends. The third length region 115C may extend from a second end opposite the first end of the first length region 115A in a direction crossing the direction in which the first length region 115A extends. The rigidity retaining part ( 115) can be changed.

At least a portion of the rigid holding part 115 may be inserted into the support part 111 . For example, the second length region 115B may be accommodated in the first opening 112 , and the third length region 115C may be accommodated in the second opening 113 . Meanwhile, the first length region 115A may be disposed on the support part 111 .

The rigid holding part 115 may be installed in the support part 111 to be removable from the support part 111 . For example, the second length region 115B may be removably received in the first opening 112 , and the third length region 115C may be removably received in the second opening 113 .

The rigidity holding part 115 may be formed of a material suitable for maintaining the rigidity of the supporting part 111 . For example, the rigidity holding part 115 may include a metal component such as an iron component or a titanium component.

The moving derivative 120 may include holders 121 and 122 and a traction unit 123 .

The holders 121 and 122 may hold the traction part 123 . Here, maintaining the traction unit 123 means that the traction unit 123 has a function of continuously maintaining the magnitude of the force F2 applied to the pair of teeth T1 and T2 by removing the traction unit 123. It can be understood as holding in position.

The holders 121 and 122 may include first poles 121A and 121B positioned on the first teeth T1 and second poles 122A and 122B positioned on the second teeth T2. The first poles 121A and 121B include a first base 121A and a first protrusion 121B, and the second poles 122A and 122B include a second base 122A and a second protrusion 122B. can do.

The first base 121A may be installed on the surface of the crown TM of the first tooth T1, and the second base 122A may be installed on the surface of the crown TM TM of the second tooth T2. have. The first protrusion 121B may protrude from the first base 121A, and the second protrusion 122B may protrude from the second base 121B. The traction part 123 may be caught by the first protrusion 121B and the second protrusion 122B.

The traction unit 123 may pull each of the crowns TM of the pair of teeth T1 and T2 in a direction in which the pair of teeth T1 and T2 approaches toward the tooth extraction space TS. For example, the traction part 123 is connected to the first protrusion 121B and the second protrusion 122B, respectively, and through them the crown TM of the first tooth T1 and the second tooth T2. A force F2 may be provided to the crown neck TM towards the extraction space TS. Here, the magnitude of the force F2 applied by the traction unit 123 ^{may be about 50 g/m 2} or less.

The traction unit 123 may be configured to change its shape. For example, the traction portion 123 may change between a first unstretched, substantially unstressed configuration (see FIG. 5 ) and a second, expanded, substantially stressed configuration (see FIG. 6 ). .

The traction part 123 may have a width and length suitable to cover at least a portion of the side surface of the support part 111 . For example, the traction part 123 may have a substantially band shape. In addition, the traction part 123 may have a shape extending in the longitudinal direction. The pulling portion 123 may include a first engaging portion 123A engaged with the first protrusion 121B and a second engaging portion 114B engaging with the second protrusion 122B.

The traction part 123 may be disposed on a side surface of the support part 111 . As shown, two traction parts 123 may be disposed on both sides of the support 111 , but the present invention is not limited thereto and may be disposed only on either side of the traction part 123 . In addition, the traction part 123 may be installed so that its central part is fixed to the support part 111 .

The traction part 123 may be formed of an elastically deformable material. For example, the traction part 123 may be formed of a material such as rubber. The traction part 123 may have relatively weak rigidity.

The rigidity of the traction part 123 may be weaker than that of the support part 111 . According to this property, in a state in which the support 111 substantially fixes the movement of the crown TC of the pair of teeth T1 and T2, the traction unit 123 is the pair of teeth T1 and T2. By pulling the crown neck (TM) of the tooth root movement of the pair of teeth (T1, T2) can be induced.

Referring to FIG. 5 , the orthodontic device 10 ′ according to another embodiment may include a fixture 110 ′ having a support 111 ′ having different rigidity. In this case, the fixing body 110 ′ may not include the rigid holding part 115 described above with reference to FIGS. 2 to 4 .

The support 111' may include an upper portion 111A' positioned at a relatively upper portion and a lower portion 111B' positioned at a relatively lower portion. For example, the upper portion 111A' is in contact with the region constituting the crown TC among the pair of teeth T1 and T2, and the lower portion 111B' is the crown of the pair of teeth T1 and T2. The dimensions of the support 111 ′ may be determined or the support 111 ′ may be disposed in an appropriate shape in the extraction space so as to contact the region other than the TC, for example, the region constituting the crown neck TM.

The upper part 111A' may be set to have relatively high rigidity and low elasticity compared to the lower part 111B'. Therefore, the upper portion 111A' having relatively high rigidity and low elasticity can substantially suppress the movement of the crown TC of the pair of teeth T1 and T2, while having relatively low rigidity and high elasticity. The lower portion 111B' may reduce the extraction space TS as desired.

Hereinafter, a method of using the orthodontic device according to an embodiment will be described with reference to FIG. 10 along with FIGS. 4 and 6 to 9 .

First, in the step 410 of fixing the movement of the crown TC, the support 111 may be disposed in the extraction space TS to match the size of the extraction space TS. When the support 111 comes into contact with the pair of teeth T1 and T2 , the rigidity retaining part 115 may be installed on the support 111 so that the rigidity and shape of the support 111 may be maintained. Then, the fixture 110 including the support 111 and the rigid support 115 is a pair of teeth (T1, T2) in the direction away from the extraction space (TS) to each crown (TC) force (F1) ) and suppress the movement of the crown (TC). Accordingly, the movement of the root of the pair of teeth (T1, T2) toward the extraction space (TS) may be advantageous.

Thereafter, the first poles 121A and 121B and the second poles 122A of the holders 121 and 122 installed in the respective crowns TM of the pair of teeth T1 and T2 adjacent to the traction part 123 . , 122B, pulling the crown TM by applying a force F2 to the crown TM of the pair of teeth T1 and T2 towards the extraction space TS 420 is performed can be This may accelerate the movement of the tooth root toward the extraction space TS in a state in which the crown TC is fixed.

Thereafter, when it is confirmed that the root has moved about 2 mm from the initial position, the step 430 of releasing the fixation of the crown may be performed. Here, a clearance of about 1 to 1.5 mm may be provided between the support part 111 and the first tooth T1 and between the support part 111 and the second tooth T2 . The provision of play may be made by replacing the new support part 111 with a smaller size, or by removing the rigid retaining part 115 from the support part 111 . On the other hand, since the traction part 123 is not removed and the force F2 is continuously applied, the crown TC may also move toward the extraction space TS by about 1 to 1.5 mm. When time elapses, the previously provided clearance may be removed and the crown TC may be fixed to move again by the support 111 .

If the above steps are repeatedly performed, the size of the extraction space (TS) having a length of about 7 mm is gradually reduced, so that the teeth can be orthodontized.

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in a different order than the described method, and/or the described components of the system, structure, apparatus, circuit, etc., are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (11)

In the orthodontic device for reducing the extraction space between a pair of adjacent teeth,
a fixture for fixing the movement of each crown of the pair of teeth; and
a movement derivative for inducing movement of each root of the pair of teeth;
including,
The fixture includes a support portion disposed in the extraction space and supporting each crown of the pair of teeth in a direction away from the tooth extraction space,
The moving derivative is an orthodontic device including a traction unit for pulling each crown neck of the pair of teeth in a direction in which the pair of teeth approaches toward the tooth extraction space.
According to claim 1,
The fixed body, the orthodontic device is installed on the support and further comprises a rigidity holding portion for maintaining the rigidity of the support.
3. The method of claim 2,
The rigidity retaining unit,
a first longitudinal region extending in the longitudinal direction;
a second length region extending from a first end of the first length region in a direction intersecting a direction in which the first length region extends; and
a third length region extending from a second end opposite to the first end of the first length region in a direction intersecting a direction in which the second length region extends;
including,
The support part,
a first opening receiving the second length region; and
a second opening for receiving the third length region;
orthodontic device comprising a.
4. The method of claim 3,
wherein the second length region is removably received in the first opening and the third length region is removably received in the second opening.
4. The method of claim 3,
wherein the first length region is disposed above the support.
According to claim 1,
The movable guide includes a holder for holding the traction unit.
7. The method of claim 6,
The holder includes a first pole and a second pole,
The first pole is
a first base installed on the crown of the first tooth among the pair of teeth; and
a first protrusion protruding from the first base and connected to the first end of the traction unit;
including,
The second pole is
a second base installed on the crown of the second tooth among the pair of teeth; and
a second protrusion protruding from the second base and connected to a second end of the traction unit;
orthodontic device comprising a.
8. The method of claim 7,
wherein the retractor is configured to change between a non-stretched, unstressed first configuration and a stress applied second configuration that expands and engages the first and second projections.
According to claim 1,
The support and the traction part are formed of an elastically deformable material, and the rigidity of the support part is greater than the rigidity of the traction part.
According to claim 1,
The support portion is an orthodontic device disposed to be spaced apart from the bottom portion of the extraction space between the pair of teeth.
According to claim 1,
the support
an upper portion in contact with a region constituting the crown of the pair of teeth; and
a lower portion in contact with an area excluding the area constituting the crown of the pair of teeth;
including,
The rigidity of the upper part is greater than the rigidity of the lower part, and the elasticity of the lower part is greater than the elasticity of the upper part.

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