KR101807829B1

KR101807829B1 - Guide template for precise dental implant surgery and manufacturing method for the same

Info

Publication number: KR101807829B1
Application number: KR1020160036619A
Authority: KR
Inventors: 이태경
Original assignee: 이태경
Priority date: 2016-03-28
Filing date: 2016-03-28
Publication date: 2017-12-11
Also published as: WO2017171320A1; KR20170111344A

Abstract

The present invention relates to a guide template including a support portion surrounding at least one or more teeth of the teeth, a lingual portion and an occlusal portion, and a treatment portion in which a bushing for guiding a drill for drilling the alveolar bone is embedded, wherein the support portion and the treatment portion of the guide template A first thermoplastic sheet layer disposed on the inner side of the teeth side and a second thermoplastic sheet layer bonded to the outside of the first thermoplastic sheet layer and having a greater thickness.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide template for precise dental implant treatment,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide template and a method of manufacturing the same, which can induce a surgical procedure to be carried out precisely as planned in an implant, in particular, a dental implant placement procedure.

Implant refers to implantation of an artificial root (fixture) made of a metal (mainly titanium or titanium alloy) having excellent biocompatibility on the alveolar bone of a defective tooth portion to be fixed by fusion with the alveolar bone tissue and then forming an artificial tooth on the artificial tooth root It is a dental surgical procedure that allows the person to carry on his / her daily life with almost the same sensation as his or her own tooth, or the artificial tooth itself.

These implants have advantages in that they do not damage the surrounding teeth except the teeth requiring the operation, have a long life span and are very similar to the natural teeth, compared with the denture or bridge method, and more recently, Has become much more popular.

The method of implanting the implant is briefly described. First, the patient's gingiva is cut to expose the alveolar bone, the position of the implant is determined on the exposed alveolar bone, and then a part of the alveolar bone Thereby forming a hole for implanting the implant. Then, a fixture is placed on the hole formed in the alveolar bone, the gingiva is covered, and the alveolar bone is sufficiently fused with the fixture and the alveolar bone to be fused for a proper period. Thereafter, the fixture is fixed and the abutment and the artificial tooth (Crown) is mounted, the implant procedure is completed. Here, according to the implant procedure, the healing abutment is placed on the fixture placed on the alveolar bone, and the gingival suture is performed and the incision is cut later.

On the other hand, when the drill is drilled directly after exposing the alveolar bone by cutting the gingiva in the implant procedure, a guide template called a guide template is used so that the drilling operation can be performed at an accurate position, There are many cases where a surgical guide is used.

To create such a guide template, you need to prepare a bone model that is a book. Traditionally, impression material is used to acquire the maxillary and / or mandibular submucosa of the recipient and then plaster casts on the submucosa to mimic the shape of the maxillary and / or mandible of the recipient. In recent years, models are produced directly on 3D models based on 3D image data, such as rapid prototyping machines and 3D printers.

On the prepared oral cavity model, a tooth missing part requiring implant treatment is directly transferred. A hole is drilled in accordance with the implant operation plan, and a bushing for guiding the direction and depth of the drill is detachably fixed do.

Then, when a cured resin is applied and cured so as to enclose a fixed bushing and at least several teeth around the tooth, and a resin material is taken out from the oral cavity model by removing a member fixed with the bushing, a bushing for inducing an implant- The mounted guide template is completed.

Patent Document 1 is an invention related to a guide template registered by the present applicant and Patent Document 2 is an invention relating to a fixation pin assembly for fixing a bushing on an oral cavity model so that the bushing can be separated in a state embedded in a guide template. Patent Document 3 is a plate for coordinate synchronization for precisely drilling holes on an oral cavity model in accordance with an implant treatment plan established by using a computer program. Patent Document 4 discloses a plate for synchronizing coordinates, As a multi-axis drilling machine, applicants have filed and registered many other inventions related to guide templates.

However, since the conventional guide template is made by applying a hardening resin by hand on the oral cavity model, it is difficult to make the thickness to be constant, and therefore, there is a tendency to apply the hardening resin to some extent excessively in order to avoid the danger that the strength is not sufficient. have. Therefore, when the guide template is made thick and inserted into the patient's mouth, the user feels uncomfortable, and the curing time is long.

In addition, as for the application of the curable resin by hand, it is difficult to make a guide template in which the complicated structure of the oral tissues follows the shape of the guide. In such a case, there is a case in which the curable resin is not stably mounted correctly. In order to solve such a problem, Patent Document 1 attaches an elastic body to the inner surface of the guide template. Although the construction of such an elastic body has led to considerable good effects, additional work of attaching the elastic body is required, and occasionally, the elastic body is often dropped.

In addition, when the curable resin is applied to the bushing surface, the bushing embedded in the guide template may be detached from the bushing surface.

Korean Patent No. 10-1039287 (issued on June 7, 2011) Korean Patent No. 10-0993666 (published Nov. 10, 2010) Korean Registered Patent No. 10-1353335 (published on Jan. 17, 2014) Korean Patent No. 10-1344472 (published on December 24, 2013)

As described above, the present invention improves the problem of applying the curable resin on the oral cavity model by hand, which is involved in the process of making the guide template. Thus, it is possible to fit the oral cavity without precisely shaking in the oral cavity, And it is an object of the present invention to provide a guide template for implant treatment of a new type and structure which does not require additional work for firmly fixing the bushing, and a method of manufacturing the same.

The present invention relates to a guide template including a support portion that covers at least one or more teeth of a cheek, a lingual side, and an occlusal side, and a treatment portion in which a bushing for guiding the drill for drilling the alveolar bone is embedded, A first thermoplastic sheet layer disposed on the inner side of the tooth side and a second thermoplastic sheet layer bonded to the outside of the first thermoplastic sheet layer and having a greater thickness.

In one embodiment of the present invention, the thickness of the first thermoplastic sheet layer may be in the range of 0.3 to 0.75 mm.

Accordingly, the thickness of the second thermoplastic sheet layer may be in the range of 0.5 to 3.0 mm.

The material of the first thermoplastic sheet layer and the second thermoplastic sheet layer may be at least one selected from the group consisting of polyethylene (PE), polyvinyl chloride (PVC), acrylic, ABS and polycarbonate Or more.

Between the first thermoplastic sheet layer and the second thermoplastic sheet layer, an identification sheet on which information including patient information, a procedure timing, a manufacturer's logo, and operation reference information is recorded may be embedded.

The support portion may be formed so as to surround a part of the undercut of the tooth over the maximum convex portion of at least one of the buccal and lingual sides.

A flat surface is formed on a side surface of the bushing buried in the treatment unit, and the first thermoplastic sheet layer is adhered to the flat surface to fix the bushing.

According to another aspect of the present invention, there is provided a method of manufacturing a guide template, the method comprising: preparing an oral cavity model simulating an intraoral tissue of a patient; and separating a bushing for guiding the drill hole drill into a planned position on the oral cavity model A first thermoplastic sheet is disposed to wrap at least a portion of the oral cavity model including the bushing and a vacuum is applied between the first thermoplastic sheet and the oral cavity model while applying heat to the first thermoplastic sheet A second thermoplastic sheet having a thickness greater than that of the first thermoplastic sheet is disposed on the first thermoplastic sheet and a second thermoplastic sheet having a thickness larger than that of the first thermoplastic sheet is disposed on the first thermoplastic sheet, Forming a vacuum between the second thermoplastic sheet and the first thermoplastic sheet while applying heat to the first thermoplastic sheet, Attaching the second thermoplastic sheet to a sheet surface; And cutting the first thermoplastic sheet and the second thermoplastic sheet to include the bushing.

In one embodiment of the present invention, the material of the first thermoplastic sheet and the second thermoplastic sheet is selected from the group consisting of polyethylene (PE), polyvinyl chloride (PVC), acrylic, ABS, polycarbonate And may be at least one or more selected resins.

Here, heat may be applied to the first thermoplastic sheet and the second thermoplastic sheet in the range of 70 to 80 占 폚.

The thickness of the first thermoplastic sheet may be in the range of 0.3 to 0.75 mm.

The thickness of the second thermoplastic sheet may be in the range of 0.5 to 3.0 mm.

The identification sheet on which the information including the patient information, the timing of the operation, the manufacturer's logo, and the operation reference information is placed may be disposed on the first thermoplastic sheet, and the second thermoplastic sheet may be attached thereon.

The guide template can be cut so as to cover a part of the undercut beyond the maximum bulging portion of at least one of the buccal and lingual sides of the teeth.

In one embodiment of the present invention, the first thermoplastic sheet and the second thermoplastic sheet can be cut into the guide template by using a laser having a power of 20 to 60 W per 0.01 mm 2.

Here, when the first thermoplastic sheet and the second thermoplastic sheet are semitransparent or opaque materials having a light transmittance of 50% or less, the output of the laser may be lowered to a range of 2 to 6 W per 0.01 mm 2.

Alternatively, an opaque cutting line may be displayed on the surface of the second thermoplastic sheet, and the first thermoplastic sheet and the second thermoplastic sheet may be laminated on the guide template It is also possible to cut it.

The guide template of the present invention having the above-described structure can closely follow the complicated shape of the oral cavity model through the thin first thermoplastic sheet layer inside, thereby improving the fit of the completed guide template in the mouth, Sufficient strength can be given to the two thermoplastic sheet layers. In addition, excellent shape conformability of the first thermoplastic sheet layer makes it possible to fix the bushing embedded in the guide template more reliably than before, thereby eliminating the need for additional work such as using an adhesive.

And, since two layers or more thermoplastic sheets are uniformly adhered to each other by using vacuum to uniformly adhere to each other without applying the curable resin by hand, the guide template having a uniform thickness and a beautiful appearance can be made Lt; / RTI >

In addition, since the identification paper on which the various information including the patient information, the timing of the operation, the manufacturer logo, and the operation reference information is stored can be sealed between the superimposed thermoplastic sheet layers, the identification paper can be damaged by the drug, the saliva, Or there is no fear of having a bad influence on the patient's premises at all.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a series of steps for preparing a mouthmatrix for making a guide template of the present invention.
FIG. 2 is a view showing a series of steps for manufacturing a guide template using the oral cavity model prepared through the process of FIG. 1; FIG.
3 is a perspective view showing a completed guide template;
Fig. 4 is a cross-sectional view taken along AA improvement of Fig. 3; Fig.
Fig. 5 shows an embodiment in which the identification paper is sealed in the guide template of Fig. 3; Fig.
FIG. 6 is a photograph of a guide template produced according to an embodiment of the present invention. FIG.

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

In describing the embodiments of the present invention, a description of well-known structures that can be easily understood by those skilled in the art will be omitted so as not to obscure the gist of the present invention. In addition, when referring to the drawings, it should be considered that the thicknesses of the lines and the sizes of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of explanation.

First, in order to understand the structure of the guide template composed of two or more layers of the thermoplastic sheet according to the present invention, it is advantageous to understand a series of manufacturing processes for making such a guide template. 1 and FIG. 2, respectively.

FIG. 1 is a view showing a series of steps for preparing an oral cavity model (MD) for manufacturing the guide template 10 of the present invention. FIG. 2 is a view And shows a series of steps of manufacturing the guide template 10.

The first step is to prepare a mouth model (MD) that mimics the patient's oral tissues. As described above, the oral cavity model (MD) is an analog type gypsum model in which gypsum is poured into a sound model made using an impression material, as well as a digital oral cavity model made of a rapid prototyping machine or a 3D printer based on three- All models (MD) can be used. However, considering the manufacturing cost, time, and the minimum precision required (geometric follow-up), the traditional gypsum model is sufficient, so it is not necessary to use the expensive digital model.

Then, when the oral cavity model MD is prepared, the bushing 40, which induces the progress of the drilling of the alveolar bone drill, is releasably fixed on the oral cavity model MD at the planned position of the implant treatment. In other words, the procedure plan established on the computer program includes information on the position, angle, and depth of the implant, as well as the length and diameter of the implant. Based on this information, The bushing 40 is detachably fixed by the fixing pin. Refer to Patent Documents 2, 3 and 4 for further details.

When the oral cavity model MD having the bushing 40 fixed to the correct position according to the procedure is prepared (see FIG. 1), at least a portion of the oral cavity model MD including the bushing 40 is wrapped (MD) by forming a vacuum (VC) between the first thermoplastic sheet (S1) and the oral cavity model (MD) while placing the first thermoplastic sheet (S1) The first thermoplastic sheet S1 is brought into close contact with the surface of the first thermoplastic sheet S1.

The first thermoplastic sheet S1 should be in close contact with the bushing 40 so that the first template sheet S1 can be held in contact with the entire surface of the bushing 40, (MD). It is possible to make the first thermoplastic sheet S1 wrap around the entirety of the oral cavity model MD, but the guide template 10 can be made in the oral cavity model MD because the number of teeth of the patient is sufficient or another pre- If you are concerned that it may be difficult to get it out, you can make it wrapped only partially.

Heating the first thermoplastic sheet S1 to an appropriate temperature is for imparting flexibility. It is sufficient to apply heat at a temperature at which there is no problem in hand-holding, for example, 70 to 80 占 폚 without melting, Do. When the first thermoplastic sheet S1 having the appropriate flexibility is placed on the oral cavity model MD and a vacuum is formed therebetween, the first thermoplastic sheet S1 is deformed by the oral cavity model MD) (including a bushing). In particular, since the pressure (atmospheric pressure) acts uniformly on the surface of the first thermoplastic sheet S1, it is possible to closely adhere the first thermoplastic sheet S1 along the complicated shape of the mouth mold MD without lifting.

Next, the second thermoplastic sheet S2 is placed on the first thermoplastic sheet S1 which is formed in close contact with the oral cavity MD, and the second thermoplastic sheet S2 is heated similarly to the previous step (VC) is formed between the second thermoplastic sheet S2 and the first thermoplastic sheet S1 to adhere the second thermoplastic sheet S2 to the surface of the first thermoplastic sheet S1 . Here, the thickness of the second thermoplastic sheet S2 is thicker than that of the first thermoplastic sheet S1. This is accomplished by closely adhering closely to the surface of the complicated-shaped oral cavity model MD using the thin first thermoplastic sheet S1 to precisely capture the basic shape of the guide template 10 and then to form the thick second thermoplastic sheet S2 So as to reinforce the structural strength. If necessary, the third and fourth thermoplastic sheets may be further bonded on the second thermoplastic sheet S2 in the same manner. Alternatively, two layers of the first / second thermoplastic sheets S1 and S2 having different thicknesses may be used The creation of the guide template 10 will be the core of the present invention.

Another advantage of making the guide template 10 more than two layers of the first / second thermoplastic sheets S1 and S2 is that the first thermoplastic sheet S1 is coated on the first thermoplastic sheet S1 with the patient information, It is possible to dispose the identification paper 50 on which the information including the operation reference information is recorded and attach the second thermoplastic sheet S2 thereon. That is, conventionally, the identification information is directly written on the surface of the guide template 10 or the label is attached. In this case, there is a possibility that the guide template 10 may be damaged by drugs, saliva, or moisture, Since the template 10 can seal the identification paper 50 in which various information including patient information, procedure timing, manufacturer's logo, and operation reference information is sealed between the overlapping thermoplastic sheet layers, do.

The first thermoplastic sheet S1 and the second thermoplastic sheet S2 may be at least one selected from the group consisting of polyethylene (PE), polyvinyl chloride (PVC), acrylic, ABS and polycarbonate One having a thickness of 0.3 to 0.75 mm and a thickness of 0.5 to 3.0 mm may be used as the first thermoplastic sheet S1 and the second thermoplastic sheet S2.

When the first thermoplastic sheet S1 and the second thermoplastic sheet S2 are bonded to each other with the mouth model MD as a mold through the above-described series of steps, the first thermoplastic sheet S1 and the second thermoplastic sheet S2 are bonded together to include the bushing 40, And the unnecessary corner portions of the second thermoplastic sheet S2 are cut to complete the guide template 10 as shown in Fig. Cutting the guide template 10 so as to cover a part of the undercut U beyond the maximum air circumferential portion H of at least one of the buccal side B and the lingual side L of the tooth can be performed by the guide template 10 So as to be elastically fitted in the undercut (U) portion when mounted on the inside of the housing, so that there is no shaking.

A cutting mechanism such as a knife or a saw or a dental bur may be used to cut the mutually bonded first thermoplastic sheet S1 and the second thermoplastic sheet S2, It may be desirable to cut using a laser LS in order to improve the processing state of the edge and to reduce or eliminate the post-processing. At this time, it is appropriate to use a laser (LS) having an output of 20 to 60 W per 0.01 mm 2 of the output of the laser (LS). When the laser LS having such an output range is used, it is possible to cut the first thermoplastic sheet S1 and the second thermoplastic sheet S2 at the same time, It is preferable to avoid the thermoplastic sheet because it may melt the thermoplastic sheet excessively and there is a safety risk to the operator.

Further, when the first thermoplastic sheet S1 and the second thermoplastic sheet S2 are semitransparent or opaque materials having a light transmittance of 50% or less, the output of the laser LS can be considerably lowered in the range of 2 to 6 W per 0.01 π mm 2 have. This is because the thermoplastic sheet having a low light transmittance has a relatively high absorption amount of the laser light, so that it is possible to lower the output of the laser while maintaining the same cutting quality.

In another embodiment, the shape of the guide template 10 is displayed by displaying an opaque cutting line (for example, a black trim line) on the surface of the second thermoplastic sheet S2 using a writing instrument such as a oil marker or the like And the first thermoplastic sheet S1 and the second thermoplastic sheet S2 are guided as a guide template by using a laser having a power of about 2 to 6 W per 0.01? Mm 2 along a cutting line formed on the second thermoplastic sheet S2 It is also possible to cut. The reason why the output of the laser for cutting can be lowered is basically the same as the case of using a thermoplastic sheet having a low light transmittance. However, since both the first thermoplastic sheet S1 and the second thermoplastic sheet S2 are made of a transparent material, the outer appearance can be made beautiful, and since the laser of low output is used, the tip of the laser is slightly deviated from the opaque cutting line The transparent first thermoplastic sheet S1 and the second thermoplastic sheet S2 are not damaged so that the convenience of the operation is increased.

FIG. 3 schematically shows the guide template 10 completed through the above-described series of steps. FIG. 6 is a photograph of the guide template 10 actually produced.

The guide template 10 of the present invention has a supporting portion 20 for covering at least one or more teeth of the buccal side B and the lingual side L and the occlusal side O and a bushing 40 for guiding the alveolar bone drill Is a guide template 10 including the embedded treatment section 30. [ 4, the guide template 10 of the present invention has a first thermoplastic sheet layer 100 in which the support portion 20 and the treatment portion 30 are disposed inside the teeth, And two layers of a second thermoplastic sheet layer 200 bonded to the outside of the thermoplastic sheet layer 100 and having a greater thickness. Thus, the thin first thermoplastic sheet layer 100 is made to have a precise shape that is directly in contact (without bushing) directly to the teeth, while the second thermoplastic sheet layer 200, which is thicker, A sufficient fixing force to the bushing 40 can be ensured.

Here, the support portion 20 refers to a portion that serves to fix and support the entire guide template 10 at a predetermined position in the oral cavity. As described above, since the guide template 10 is made of the first / second thermoplastic sheets S1 and S2 which are in close contact with the gingiva in which the teeth are lost and the appropriate number of teeth with the mouth model MD as a mold, (20) is formed with a hollow portion having the same shape as the external shape of the tooth. Therefore, when the cavity portion is fitted into the corresponding tooth, the support portion 20 surrounds the buccal side B, the lingual side L and the occlusal side O of the teeth, and the guide template 10 is fixed do.

The support portion 20 may be formed to cover a part of the undercut U of the tooth beyond the maximum air circumferential portion H of at least one of the buccal side B and the lipped side L, ) Is fitted to the undercut (U) portion when it is mounted in the housing, it is elastically inserted so that there is no shaking.

There is no cavity for mounting the guide template 10 as a portion where the implant treatment is performed (a missing tooth portion), but the bushing 40 for guiding the progress of the drilling drill is fixed have.

Here, the flat surface is formed on the side surface of the bushing 40 buried in the treatment portion 30. Since the first thermoplastic sheet layer 100 is closely attached to the flat surface, the bushing 40 is detached The second thermoplastic sheet layer 200 formed in close contact with the first thermoplastic sheet layer 100 while being fixed without rotating firmly holds the bushing 40 in a fixed state.

According to an embodiment of the present invention, the thickness of the first thermoplastic sheet layer 100 may range from 0.3 to 0.75 mm, and the thickness of the second thermoplastic sheet layer 200 which is thicker may be from 0.5 to 3.0 Mm. &Lt; / RTI >

The materials of the first thermoplastic sheet layer 100 and the second thermoplastic sheet layer 200 may be polyethylene (PE), polyvinyl chloride (PVC), acrylic, ABS, polycarbonate, And according to another embodiment shown in Fig. 5, between the first thermoplastic sheet layer 100 and the second thermoplastic sheet layer 200, there can be provided at least one selected from the group consisting of patient information, And an identification sheet 50 on which information including surgical reference information is recorded may be embedded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be possible. Accordingly, the scope of the present invention will be determined by the description of the claims and their equivalents.

10: Guide template 20: Support
30: Procedure 40: Bushing
50: Identification paper
100: First thermoplastic sheet layer
200: second thermoplastic sheet layer
MD: Impression Model
B: buccal L: lingual
O: Occlusal H: Height of contour
U: Undercut
S1: the first thermoplastic sheet
S2: the second thermoplastic sheet
VC: Vacuum LS: Laser

Claims

A guide template comprising a support portion that covers at least one or more teeth of a cheek, a lingual side and an occlusal side, and a treatment portion in which a bushing for guiding a drill for drilling the alveolar bone is embedded,
The supporting portion and the treatment portion of the guide template include a first thermoplastic sheet layer disposed on the inner side of the teeth side and a second thermoplastic sheet layer bonded to the outside of the first thermoplastic sheet layer and having a greater thickness,
The thickness of the first thermoplastic sheet layer is 0.3 to 0.75 mm,
Wherein an identification paper on which information including patient information, a procedure time, a manufacturer logo, and operation reference information is embedded is embedded between the first thermoplastic sheet layer and the second thermoplastic sheet layer.

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The method according to claim 1,
Wherein the thickness of the second thermoplastic sheet layer is 0.5 to 3.0 mm.

The method according to claim 1 or 3,
The first thermoplastic sheet layer and the second thermoplastic sheet layer may be made of at least one material selected from polyethylene (PE), polyvinyl chloride (PVC), acrylic, ABS, And the guide template.

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The method according to claim 1,
Wherein the support portion is formed so as to surround a part of the undercut of the tooth over a maximum convex portion of at least one of the buccal and lingual sides.

The method according to claim 1,
Wherein a flat surface is formed on a side surface of the bushing buried in the treatment portion, and the first thermoplastic sheet layer is adhered to the flat surface.

Preparing an oral cavity model mimicking the intraoral tissue of the patient;
Releasably securing a bushing for guiding a drill of the alveolar bone to the position where the implant operation is planned on the oral cavity model;
A first thermoplastic sheet having a thickness in the range of 0.3-0.75 mm is disposed to surround at least a portion of the oral cavity model including the bushing and the first thermoplastic sheet and the oral cavity model Forming a vacuum between the first thermoplastic sheet and the first thermoplastic sheet to adhere the first thermoplastic sheet to the surface of the oral cavity model;
Disposing an identification sheet on the first thermoplastic sheet on which information including patient information, a procedure time, a manufacturer logo, and operation reference information is recorded;
A second thermoplastic sheet having a thickness greater than that of the first thermoplastic sheet is disposed on the first thermoplastic sheet and a vacuum is formed between the second thermoplastic sheet and the first thermoplastic sheet while applying heat to the second thermoplastic sheet Attaching the second thermoplastic sheet to the surface of the first thermoplastic sheet; And
The first thermoplastic sheet and the second thermoplastic sheet are cut so as to include the bushing, an opaque cutting line is displayed on the surface of the second thermoplastic sheet, and a laser beam having a power of 2 to 6 W Cutting the first thermoplastic sheet and the second thermoplastic sheet using the first thermoplastic sheet and the second thermoplastic sheet;
Wherein the guide template comprises a plurality of guide templates.

9. The method of claim 8,
The material of the first thermoplastic sheet and the second thermoplastic sheet is at least one selected from the group consisting of polyethylene (PE), polyvinyl chloride (PVC), acrylic, ABS, and polycarbonate &Lt; / RTI >

10. The method of claim 9,
Wherein heat is applied to the first thermoplastic sheet and the second thermoplastic sheet in a temperature range of 70 to 80 占 폚.

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9. The method of claim 8,
Wherein the thickness of the second thermoplastic sheet is 0.5 to 3.0 mm.

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9. The method of claim 8,
Wherein the guide template is cut so as to cover a part of the undercut beyond the maximum bulging portion of at least one of the buccal and lingual sides of the teeth.

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