KR102486621B1 - Easy - to - combine and detatchable orthodontic retainer - Google Patents

Abstract

The present invention relates to an easy-to-combine and -detach orthodontic retainer, and more specifically, to an easy-to-combine and -detach orthodontic retainer which comprises a support band (10) that surrounds the entire lingual teeth and the side surface of a portion of labial teeth and supports orthodontic retention force, and a pressure band (20) that applies orthodontic retention force for surrounding the side surface of the remaining labial teeth, wherein the end tips of the support band (10) and the pressure band (20) are individually formed with connection parts (40, 50), so that the pressure band (20) can be easily coupled to and separated from the support band (10).

Description

Orthodontic retainer for easy combination and separation {EASY - TO - COMBINE AND DETATCHABLE ORTHODONTIC RETAINER}

The present invention relates to an orthodontic retainer that can be easily coupled and separated.

Specifically, it relates to an orthodontic retainer or retainer used for the purpose of stably maintaining teeth moved for orthodontics in gums after orthodontic treatment is finished.

In general, people put a lot of effort into making a good impression on others. A particularly good impression comes from the face, and it is the skeleton of the face that influences it, and in particular, it can be said that the alignment of the teeth has a great influence on the skeleton of the face.

In addition, if the alignment of the teeth is bad, not only causes masticatory dysfunction, pronunciation disorder, and temporomandibular joint dysfunction, but also causes dental caries and periodontal disease.

Therefore, correcting it through dental treatment is called orthodontic treatment, and the method is very diverse.

Recently, a method of correction using a mouthpiece-type corrector made of a transparent material has been mainly used, and in this method, a user wears a mouthpiece for which a target value to move teeth is set in advance, and correction is performed.

The orthodontic method is a method of straightening the teeth by replacing the braces step by step, and usually moves about 0.1 mm per step over 1 to 2 weeks, so it takes about 30 to 40 steps until the correction is completed. The total correction period requires a long period of one and a half to two years.

However, even after the correction period is over, the teeth related to the dentition, occlusion and facial shape remain with tissue memory to restore to the original position before correction by the surrounding muscles, and the tissue memory is usually active for about 6 months after the orthodontic device is removed. appear

In addition, it is known that tissue memory is more regressive in adults in which the dentition is sufficiently established than in children and adolescents in which it is not.

Therefore, if the dentition is left as it is after correcting the dentition over a long period of time as described above, the tissue memory may cause the dentition to be deformed or return to the shape before correction in some cases. It can be said that the use of a separate orthodontic retainer is essential.

As for the orthodontic retainers that have been widely used for this purpose, removable, adhesive, and mouthpiece-type orthodontic retainers are widely used depending on whether or not the orthodontic retainer is attached to the teeth.

It is known that the removable type orthodontic retainer is stably and closely supported on the teeth by the body part with the bent part and the support part made of shape memory alloy (Patent Publication No. 10-2021-0152872, 2021. 12. 16. Removable type retainer) And, it is known that an elastic means for forcing the orthodontic unit to be pressed in the direction of the base is included (Patent Publication No. 10-2017-0011777, 2017. 02. 02. Orthodontic device).

By the way, the removable orthodontic retainer is a method of wrapping the entire tooth using a thin wire or the like of the body or orthodontic unit, and can be detached and attached by itself compared to adhesive orthodontic devices, so temporary removal when eating or brushing teeth However, since daily life is possible even when not worn, the risk of losing the orthodontic retainer or neglecting wearing it may cause the dentition to return to its pre-correction state. there is.

In addition, since the fixing part 200 or the base 100 is made of pink resin and placed in the mouth, there is a risk that the orthodontic retainer may be deformed if hot food or water is suddenly consumed, and regular cleaning It is necessary to disinfect, and when using a toothbrush for cleaning or brushing teeth in a worn state, there is a risk of abrasion caused by toothpaste and toothbrush.

In particular, since the thin wire is exposed to the labial side, which is the outside of the oral cavity, the aesthetic sense, such as being able to know that others are undergoing correction, is reduced, and it can be said that it is a psychological burden in the treatment of the orthodontic retainer for teenagers or those who value appearance. there is.

In addition, it is known that the adhesive type (or adhesive type, fixed type, hereinafter referred to as 'adhesive type') orthodontic retainer is stably and closely supported on the teeth by the body part with the shape-memory alloy material bending part and support part (Public Patent Publication) 10-2021-0152871, 2021. 12. 16. Adhesive retainer), and the first and second attachment parts (111, 113) are set on the surfaces of the first and second teeth (210, 230), and the spaced part between them It is known (Patent Publication No. 10-1950479, 2019.02.14. A tooth retaining device for maintaining the arrangement of the wearer's teeth) that is configured to pass sanitary tools into the space secured by including 130.

The attached orthodontic retainer uses a fixing adhesive made of the same resin as the tooth color and attaches a thin wire to the back of the tooth, so that the point invisible from the outside and the corrected teeth are fixed by the wire, so separate management is not required. Although there is an advantage that is not necessary, if the orthodontic retainer is detached from the teeth in the case of eating severely sticky and hard food, since the orthodontic force is already given to the wire, the desired correction is maintained if you do not visit the dentist immediately and receive the procedure. There are also fatal flaws.

In recent years, a mouthpiece-type orthodontic retainer made of transparent material has been used to solve the disadvantages of removable orthodontic retainers, but the orthodontic retaining power is weaker than the removable orthodontic retainer using a thin wire, and durability decreases during long-term use. And there is a disadvantage that the entire transparent orthodontic retainer must be replaced due to yellowing of the transparent material.

Therefore, there is an urgent need for a device capable of improving the disadvantages of the mouthpiece-type orthodontic retainer of the removable and transparent material.

KR Patent Publication No. 10-2021-0152872 (2021. 12. 16.) KR Patent Publication No. 10-2017-0011777 (2017. 02. 02.) KR Patent Publication No. 10-2021-0152871 (2021. 12. 16.) KR Patent Publication 10-1950479 (2019. 02. 14.)

An object of the present invention is to provide an orthodontic retainer that can be easily coupled and separated so that the patient does not feel repulsive in the orthodontic retainer.

An object of the present invention is to easily replace the part where the orthodontic retaining force occurs among the orthodontic retainers, so that when the orthodontic retaining force or other problems occur, the entire orthodontic retainer does not need to be replaced. is to provide

In order to achieve the technical problem of the present invention, in the orthodontic retainer (100a), which is easy to connect and separate, wrapped around the side of the upper and / or lower teeth,

The support band 10 that can be inserted into the patient's tooth side surface, including the posterior tooth surface, the lingual tooth surface, and the labial tooth surface, and is coupled to the front side opening of the support band 10 to attach the support band 10 to the front side. It is composed of a pressure band 20 that closes the opening, comes in contact with the patient's labial tooth surface, and is combined with the support band 10 to apply pressure so that the teeth can be closely attached. The pressure band 20 is the support band 10 ) It is characterized in that it is easy to combine and separate from.

In addition, the support band 10 is a Ti alloy having shape memory ability or a Co-based alloy which is a bio alloy, and the pressure band 20 is a structure made of transparent silicon or a thermoplastic shape memory polymer. characterized by

By providing an orthodontic retainer that is easy to connect and separate according to the present invention, it is possible to resolve the user's psychological reluctance due to aesthetic deterioration in which a thin wire, which is a conventional orthodontic retainer, is exposed to the outside, and the orthodontic retainer from the teeth Even if it falls off, it does not require a separate procedure by visiting the dentist immediately, and there is an effect of improving the yellowing disadvantage of the orthodontic retainer.

1A is an exploded perspective view of a first embodiment of an orthodontic retainer that is easily coupled and separated according to the present invention.
Figure 1b is a view illustrating the use of a first embodiment of an orthodontic retainer that is easy to combine and separate according to the present invention.
Figure 2a is an exploded perspective view of a second embodiment of the orthodontic retainer for easy coupling and separation according to the present invention.
Figure 2b is a view illustrating the use of a second embodiment of the orthodontic retainer for easy coupling and separation according to the present invention.
Figure 3a is an exploded perspective view of a third embodiment of the orthodontic retainer for easy coupling and separation according to the present invention.
Figure 3b is an example of use of a third embodiment of the orthodontic retainer for easy coupling and separation according to the present invention.
Figure 4a is an exploded perspective view of a fourth embodiment of the orthodontic retainer for easy coupling and separation according to the present invention.
Figure 4b is a view illustrating the use of a fourth embodiment of the orthodontic retainer for easy coupling and separation according to the present invention.
5 is an exemplary view of teeth to be mounted with an orthodontic retainer that is easily coupled and separated according to the present invention.

The terms or words used in this specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventors may appropriately define the concept of terms in order to explain their invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention, various equivalents that can replace them at the time of the present application It should be understood that there may be variations and examples.

Hereinafter, prior to description with reference to the drawings, matters that are not necessary to reveal the gist of the present invention, that is, known configurations that can be added obviously by those skilled in the art, are not shown or described in detail. reveal

First, referring to FIG. 5, the dentition gradually increases in number from number 1 to number 7 or 8, and the left and right sides are symmetrical with respect to the center. Since it has, for convenience, only one side will be described with reference numerals.

In addition, since the 8th tooth is referred to as a conventional “wisdom tooth”, it should be noted in advance that in the case of FIGS. 1 to 7, the 8th tooth is shown as an example of an extracted state.

First, the orthodontic retainer for easy coupling and separation of the present invention is composed of a band-shaped support band 10 and a band-shaped pressure band 20 positioned at the labial opening of the support band 10.

The support band 10 of the orthodontic retainer 100a shown in FIG. 1A is formed according to the tooth arrangement, and has a structure corresponding to the tooth arrangement on one side and a tooth arrangement structure on the other side corresponding to the tooth arrangement structure on the one side. and a connection part 40 located at the end of the labial tooth surface of the anterior teeth in front of the support band 10 is formed.

The support band 10 is fastened to a rear tooth circumferential portion 11 corresponding to a molar tooth or a wisdom tooth and fastenable to a tooth arrangement structure on one side, and from the rear tooth circumferential portion 11 to the front tooth lingual side. It is composed of a lingual tooth circumferential portion 12 formed by extension and a labial tooth circumferential portion 13 formed by extending from the posterior tooth circumferential portion 11 to the canine labial side to which a pressure band 20 described later can be fastened.

In addition, the posterior tooth circumferential portion 11, the lingual tooth circumferential portion 12, and the labial tooth circumferential portion 13 constituting the support band 10 are separated for better understanding based on the bridge 30 described later. As described above, since the circumferential parts 11, 12, and 13 are manufactured according to a manufacturing method to be described later, they have an integral structure connected to each other.

Here, at both ends of the labial tooth circumferential portion 13, a cylindrical portion 41, which is a connecting portion 40, is formed to correspond to and fasten the connecting portion 50 formed at the end of the pressure band 20.

In addition, the separation distance between the lingual tooth circumferential portion 12 and the labial tooth circumferential portion 13 is at a certain level at the interface between the posterior tooth circumferential portion 11, the lingual tooth circumferential portion 12, and the labial tooth circumferential portion 13. A bridge 30 is further formed to prevent abnormal separation so that the separation distance can be maintained, and to better adhere to the wisdom teeth or rear molars to maintain the insertion force.

The bridge 30 serves as a bridge connecting the lingual tooth circumferential portion 12 and the labial tooth circumferential portion 13.

In addition, since the bridge 30 is located between the teeth of the posterior tooth circumferential portion 11, the lingual tooth circumferential portion 12, and the labial tooth circumferential portion 13, the orthodontic retainer of the present invention is located between the teeth. As a result, it is possible to prevent tartar from accumulating between the teeth in advance.

In addition, since the bridge 30 serves as a bridge connecting the lingual tooth circumferential portion 12 and the labial tooth circumferential portion 13, the bridge 30 is different depending on the structure or size of the oral cavity for each individual. Unlike the first embodiment, the position may be variable, such as between the 5th tooth and the 6th tooth, as in the second to fourth embodiments described later, and the number is not limited to only one in either row.

The pressure band 20 shown in FIG. 1A is formed to correspond to the labial surface of the tooth corresponding to the opening formed in the front of the support band 10 of the patient, and the connection portion 40 of the support band 10 is provided at both ends. ), a cylindrical insertion portion 51, which is a connecting portion 50, is formed so as to be coupled with the cylindrical portion 41.

At this time, the pressure band 20 is formed shorter than the length of the opening formed in the front of the support band 10 to narrow the width of the opening of the support band 10 so that it is pressed and coupled.

Therefore, due to the pressure structure as described above, the pressure band 20 serves to continuously maintain the corrected state in response to the tissue memory of the corrected tooth.

At this time, since the support band 10 and the pressure band 20 are band-shaped, they support only a part of the side surface instead of the entire tooth surface like a conventional mouthpiece-type orthodontic retainer, so the installation position may be limited. there is.

Therefore, the support band 10 and the pressure band 20 have a structure passing while contacting the tooth surface of the middle part based on the height of the tooth, preferably including a 1/3 of the alveolar neck, and the distance from the boundary of the gum to the end of the tooth. It may be limited to a structure not exceeding one-half of an inch crown length.

Here, as a reason for limiting the alveolar 1/3, the tooth is divided into 3 parts in height based on the gum, and is commonly referred to as the alveolar 1/3, the central 1/3, and the occlusion 1/3 from the lower side, and the center Since the 1/3 part is the part where the teeth protrude the most to the side, the bands 10 and 20 do not deviate outside the teeth and the 1/3 part of the alveolar cervix must be included in order to exert stable support or orthodontic force will be.

In addition, when it exceeds 1/2 the height of the crown, the surface of the tooth is almost covered, and it is formed smaller than the height of the tooth so that the lower and upper teeth of the patient do not interfere when tightening. ..

In addition, when the initially designed orthodontic retaining state is changed or the pressure band 20 is replaced for other reasons, the present invention provides a pressure band 20 without the need to additionally manufacture the entire orthodontic retainer as in the prior art. Since it is possible to replace only the support band 10, in order to facilitate the separation and coupling of the pressure band 20 from the support band 10, the connection parts 40 and 50 at each end where the support band 10 and the pressure band 20 meet. is the structure in which

Here, since correction is normally made from the incisor, which is the first tooth, to the canine, which is the third tooth, the connecting portions 40 and 50 must include the canine, which is the third tooth, so the position of the connecting portions 40 and 50 is 3 It is located in the center of the number 1 tooth or between the teeth 3 and 4.

In addition, as shown in FIG. 1A, the concrete structure of the connection parts 40 and 50 is formed by forming cylindrical parts 41 in the vertical direction at both ends of the front opening of the labial tooth circumference 13 in the support band 10, and pressing At both ends of the band 20, a cylindrical insert 51 is formed so that the cylindrical portion 41 can be inserted, and the pressure band ( 20) is fixedly bound to the support band 10.

In addition, the support band 10 is a Ti alloy having shape memory ability or a Co-based alloy which is a bioalloy, and the pressure band 20 is a transparent silicone or a transparent temperature-changeable shape memory polymer (thermoplastic shapememory polymer) according to an embodiment. ) It is characterized in that the structure consisting of.

Therefore, since the pressure band 20 is also made of a temperature variable shape memory polymer (thermoplastic shapememory polymer), the pressure applied to the support band 10 is exerted.

In addition, the teeth belonging to the support band 10 and the pressure band 20 may self-correct inside them.

A known photocurable composition is used as the temperature variable-shape memory polymer (thermoplastic shapememory polymer).

That is, the temperature variable-shape memory polymer (thermoplastic shape memory polymer) exhibits a continuous and weak elasticity even at 36.5 ° C, which is lower than the glass transition temperature of 50 ° C to 70 ° C, which is the most effective shape memory effect. It can show the shape memory effect of recovering to the original shape.

Therefore, the user directly heats the pressure band 20 from the outside to above the glass transition temperature so that it can be easily coupled to the support band 10 in a state in which the elastic force is reduced, and the pressure band coupled to the support band 10 ( 20) maintains the corrective force corresponding to the tissue memory of the corrected teeth by the force acting to restore the original designed shape.

In addition, the pressure band 20 is basically formed of a transparent material, but it is characterized in that a pigment can be further added to express color.

In addition, the support band is manufactured by any one of methods capable of 3D printing metal, such as DED (Directed Energy Deposition) and SLS (Selective, Laser Sintering). In particular, the pressure band is SLA (Stereo Lithography Apparatus) or DLP. (Digital Light Processing) or Liquid Crystal Display).

Hereinafter, a first embodiment of the present invention will be described with reference to FIG. 1B.

In the orthodontic retainer, which is easy to combine and separate, the support band 10 is preferentially inserted into and combined with the back side of the lingual side, that is, both sides of the 7th tooth, and then gradually pushed toward the front row of teeth in order to the lower jaw. insert and bind

Therefore, since the bridge 30 is precisely located between the teeth of the 6th and 7th teeth, the support band 10 is fixed to the teeth.

Subsequently, when the pressure band 20 is immersed in hot water at a glass transition temperature of about 50° C. to 70° C. from the outside for a certain period of time, the pressure band is attached to the cylindrical portion 41 of the support band 10 in a state in which the elastic force is reduced. Insert the cylindrical insertion portion 51 of (20) to complete the coupling.

After that, the pressure band 20 continuously exerts a weak elastic force at 36.5 ° C, which is lower than the glass transition temperature of 50 ° C to 70 ° C, which is a glass transition temperature that exhibits a shape memory effect, and also restores the shape to the original memorized shape. Since it has a memory effect, the state of the corrected teeth is maintained.

In addition, when the pressure band 20 is separated from the support band 10, a little warm water is put in the mouth, and then the pressure band 20 is physically removed using a hand in a state where the pressure is reduced to some extent. will be.

Referring to FIGS. 2A and 2B, the second embodiment of the orthodontic retainer 100b will be described in detail. It is the same as the embodiment, but there is a difference in that the installation position is the upper jaw.

In addition, since the bridge 30' is located between the teeth 5 and 6 unlike the first embodiment, the size of the posterior tooth rest 13 is increased compared to the first embodiment.

Therefore, compared to the first implementation, the total length of the rear tooth circumference 13 is increased, which is because the supporting force of the support band 10 is increased, so the pressure applied by the pressure band 20 to the teeth is more stable. it will be exerted

In addition, in the specific structure of the connection parts 40 and 50 of the second embodiment, in the support band 10, the hook parts 42 are formed in the vertical direction at both ends of the front opening of the labial tooth circumference 13, and press At both ends of the band 20, a ring insertion portion 52 is formed so that the ring portion 42 can be inserted, and the ring portion 42 is inserted into the ring portion insertion portion 53. The pressure band 20 is fixedly bound to the support band 10 .

In addition, since the other end of the ring portion insertion portion 52 of the pressure band 20 into which the ring portion 42 of the support band 10 is inserted is blocked, food debris or tartar is removed from the connection portion ( 42, 52) is a structure that does not stack.

Also, like the first embodiment, in the second embodiment, since the support band 10 and the pressure band 20 are coupled in the vertical direction of the teeth, the support band 10 and the pressure band 20 can be separated and separated from each other. There is little concern, so it can be applied when the front side opening of the support band 10 is large or when a large pressure action is required.

Referring to FIGS. 3A and 3B, the third embodiment of the orthodontic retainer 100c will be described in detail. It is the same as the embodiment, and it is the same as the second embodiment in that it is installed on the upper jaw.

In addition, since the bridge 30' is located between the teeth 5 and 6 unlike the first embodiment, the size of the posterior tooth rest 13 is increased compared to the first embodiment.

Therefore, compared to the first embodiment, the total length of the rear tooth circumference 13 is increased, which is because the supporting force of the support band 10 is increased, so the pressure applied to the teeth by the pressure band 20 is more stable It is a structure that can be exercised as

In addition, the specific structure of the connection parts 40 and 50 of the third embodiment is such that the ball insert 43 is placed at the end of the front opening of the labial tooth circumference 11 in the support band 10 to come into contact with the labial surface of the teeth. Forming and forming a ball portion 53 at both ends of the pressure band 20 so that it can be inserted into the ball insertion portion 43, the ball portion 53 is forcibly inserted into the ball insertion portion 43 Structure As a result, the pressure band 20 is fixedly bound to the support band 10.

In addition, the third embodiment is easier to connect and separate the pressure band 20 than the first and second embodiments, so when the front side opening of the support band 10 is relatively small or tissue memory This is applicable in the relatively low case.

4a and 4b, the fourth embodiment of the orthodontic retainer 100d will be described in detail, the basic structure of the support band 10 and the pressure band 20 and the sequence of fixing to the teeth are the same as those of the first embodiment. It is the same as the example, and it is the same as the second embodiment in that it is installed on the upper jaw.

In addition, since the bridge 30' is located between the teeth 5 and 6 unlike the first embodiment, the size of the posterior tooth rest 13 is increased compared to the first embodiment.

Therefore, compared to the first embodiment, the total length of the rear tooth circumference 13 is increased, which is because the supporting force of the support band 10 is increased, so the pressure applied to the teeth by the pressure band 20 is more stable It is a structure that can be exercised as

In addition, the specific structure of the connection parts 40 and 50 of the fourth embodiment is that the cross section opened toward the outside is formed in a substantially "C" shape at the end of the front opening of the labial tooth circumferential portion 11 in the support band 10. A hook fastening part 44 is formed, and at both ends of the pressure band 20, the hook fastening part 44 formed in the "C" shape has a substantially "C" shape so that it can be caught and fastened by going over the end of the hook fastening part 44 formed in the "C" shape. An inverted “C” shaped hook part 54 opened inward in the opposite direction is formed, so when the hook part 54 is pushed inward, the hook part 54 is attached to the end of the hook fastening part 44. The pressure band 20 is fixedly bound to the support band 10 by the structure in which the end is inserted and caught.

In addition, in the fourth embodiment, compared to the first and second embodiments, since coupling and separation of the pressure band 20 are easier, the size of the opening on the front side of the support band 10 and the tissue memory are somewhat lower. applicable in the case.

In addition, the first to fourth embodiments correspond to embodiments in which the pressure band 20 can be easily separated and coupled from the support band 10 and the coupled state can be continuously maintained. Means other than examples are not actively excluded.

In addition, in the first embodiment, both the support band 10 and the pressure band 20 are in the form of a band, and in the second to fourth embodiments, the support band 10 is generally in the form of a wire, and the pressure band 20 is a typical Although it is in the form of a band, in the present invention, if the support band 10 and the pressure band 20 are coupled to each other as described above and can be fixed to the teeth, other forms or other combinations thereof are also actively excluded. I never do that.

In addition, it will be described in detail as follows with respect to the steps of manufacturing an orthodontic retainer that is easy to combine and separate.

The orthodontic retaining device, which is easy to combine and separate as described above, includes the steps of scanning the teeth of a patient whose orthodontic treatment has been completed (S10); Obtaining the oral condition of the patient as data (S20); Designing the orthodontic retainer (S30); It can be manufactured through a method for manufacturing an orthodontic retainer that is easy to combine and separate, characterized in that it consists of a step (S40) of 3D printing the orthodontic retainer.

1. Step of scanning the teeth of the patient whose orthodontic treatment has been completed (S10)

The step of scanning the patient's teeth (S10) refers to a process of scanning the upper or lower teeth with a 3D scanner to acquire the structure and position of the teeth for which orthodontic treatment has been completed as 3D data.

Here, the 3D data on the structure and position of the teeth after the treatment is to acquire the patient's current oral condition as data to obtain a maintenance goal of the teeth whose positions have changed due to orthodontic treatment.

At this time, the 3D scanner can be anything as long as it can be scanned in 3D, but it is preferable to use a 3D scanner for dentistry.

2. Acquiring the patient's oral condition as data (S20)

The step of obtaining data of the patient's current conceptual state after orthodontic treatment (S20) is to obtain information about the patient's current oral condition based on the 3D data obtained in the step of scanning the patient's teeth (S10). .

More specifically, information such as the shape of the oral cavity of the patient who has completed orthodontic treatment, the occlusion of the upper and lower jaws, and the arrangement of teeth is obtained as 3D image information including graphics, and based on the obtained image information As a result, feature information for each characteristic part is also obtained.

3. Step of designing the orthodontic retainer (S30)

Based on the tooth data of the patient whose orthodontic treatment was obtained in the data acquisition step (S20), the orthodontic retaining device is divided into a support band 10 and a pressure band 20 to design.

At this time, the design of the clear aligner is preferably designed using a 3D modeling program, but is not limited thereto.

4. Step of 3D printing the orthodontic retainer (S40)

3D printing is performed using the completed design of the transparent orthodontic device designed in the step of designing the orthodontic retainer (S30).

Here, the support band is manufactured by any one of methods capable of 3D printing metal, such as DED (Directed Energy Deposition) and SLS (Selective, Laser Sintering). In particular, the pressure band is SLA (Stereo Lithography Apparatus) or DLP. (Digital Light Processing) or Liquid Crystal Display) method is applied.

In addition, when additive manufacturing is performed with a 3D printer, the SLA (Stereo Lithography Apparatus, Photocurable Resin Modeling) method, in which a UV laser, which is a photocurable method that uses ultraviolet rays, moves while drawing a line, or a UV lamp and a dimming device similar to an image projector, Additive manufacturing can be done using a DLP (Digital Light Processing) method that hardens the entire layer at once, like a camera flash, and the 3D printing method can be selected according to the material that can be applied to 3D printing.

In particular, when the pressure band part of the orthodontic retainer of the present invention is laminated with a 3D printer, since a thermoplastic shape memory polymer is used, the UV laser, which is a photocurable method using ultraviolet rays, moves in a line. Additive manufacturing using the SLA (Stereo Lithography Apparatus) method or the DLP (Digital Light Processing) method that cures the entire layer at once, similar to an image projector, using an ultraviolet lamp and a dimmer, like a camera flash. can do.

Therefore, the additive manufacturing method of 3D printing for the orthodontic retainer may be any one of SLA and DLP methods in the case of a pressure band. Preferably, the additive manufacturing method of 3D printing may be the highest precision SLA method among existing 3D printing methods. In addition, it can be replaced with the most precise method among 3D printing methods that are being developed in the future.

The basic principle of well-known 3D printing is to design a model to be made on a computer using a 3D design program, and then save it in a 3D data format suitable for 3D printing, such as STL (Standard Triangle Language) and AMF (Additive Manufacturing File Format). , After that, the designed 3D drawing is divided into thin layers as if differentiating layer by layer, and finally, a three-dimensional print can be obtained only by stacking the thin layers one by one from the bottom and going through the process of integration. At this time, since the thickness of the layer is about 0.05 to 0.1 mm, which is thinner than a sheet of paper, it is possible to create an elaborate three-dimensional model.

In addition, the above-described temperature variable-shape memory polymer (thermoplastic shapememory polymer) exhibits continuous and weak elasticity even at an oral body temperature of 36.5° C. lower than the glass transition temperature of 50° C. to 70° C., which exhibits the most efficient shape memory effect. And it can show the shape memory effect of recovering to the original memorized shape.

Here, a known photocurable composition is used as the temperature-variable-shape-memory polymer.

In addition, a selection step in which the user selects a color may be included before printing, and when the user does not selectively select a color, a transparent material is used as a basis.

What has been described using the drawings above is only the main points of the present invention, and it is obvious that the present invention is not limited to the configuration of the drawings as various designs are possible within the technical scope.

10: support band
11: posterior tooth circumference
12: lingual tooth circumference
13: Labial tooth circumference
20: pressure band
30, 30': bridge
40: support band connection
41: cylinder part
42: ring part
43: ball insertion part
44: hook attachment part
50: pressure band connection
51: cylinder insertion part
52: ring part insertion part
53: ball
54: hook part
100a, 100b, 100c, 100d: orthodontic retainer

Claims (5)

In the orthodontic retainer that is easy to combine and separate,
A support band (10) in the form of easy coupling and separation that can be inserted to the outside of the teeth, including the patient's posterior tooth surface, lingual tooth surface) and labial tooth surface; and
It is coupled to the front side opening of the support band 10 to close the front side opening to the support band 10, comes in contact with the patient's labial tooth surface, and is combined with the support band 10 to apply pressure to adhere teeth. and a pressure band 20 that can be coupled and separated from the support band 10; and
The support band 10 and the pressure band 20 are structures passing while contacting the tooth surface of the middle portion based on the height of the tooth, and when the crown length, which is the distance from the gum boundary to the tip of the tooth, is divided into three equal parts, 1 from the gum boundary Orthodontic retaining device that is easy to combine and separate, characterized in that it includes a 1/3 point of the alveolus at /3 position and does not exceed 1/2 of the crown length.
According to claim 1,
The support band 10 is formed according to the tooth arrangement, and is composed of a structure corresponding to the tooth arrangement on one side and a tooth arrangement structure on the other side corresponding to the tooth arrangement structure on the one side. A support band connection portion 40 located on the labial tooth surface is formed,
The pressure band 20 is formed shorter than the length of the opening formed in the front of the support band 10, and is fastened to the support band connection part 40 so that the width of the opening of the support band 10 can be narrowed and pressed. Orthodontic retaining device that is easy to combine and separate, characterized in that the pressure band connection portion 50 is formed According to claim 1 or 2,
A rear tooth circumferential portion 11 that can be fastened and corresponds to a molar tooth or a wisdom tooth is formed to correspond to the tooth arrangement structure on one side of the support band 10, and is formed to extend with the rear tooth circumferential portion 11, and the molar tooth A lingual tooth circumferential portion 12 fastened to the lingual side of the front teeth is formed from the portion, and is formed by extending with the rear tooth circumferential portion 11, and a labial tooth circumferential portion 13 fastened to the labial side of the canine tooth from the molar portion. Orthodontic retaining device that is easy to combine and separate, characterized in that formed.
delete According to claim 3,
At the interface between the posterior tooth circumference 11, the labial tooth circumference 13, and the lingual tooth circumference 12, the separation distance between the labial tooth circumference 13 and the lingual tooth circumference 12 can be maintained, , Orthodontic retaining device that is easy to combine and separate, characterized in that bridges (30, 30a) are further formed to better adhere to wisdom teeth or molars to maintain insertion force.

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