KR20210136839A - Manufacturing method of a dental implant sergical guide, Pre-guide and guide tray therefor - Google Patents

Abstract

A pre-guide (100) of the present invention comprises an impression resin (110) and a guide tray (120). Also, the guide tray (120) comprises an impression resin accommodation part (130), a jig fastening part (140), a protection covering part (150), and a holding part (160). According to the present invention, accuracy or precision can be constantly maintained.

Description

Method of manufacturing a dental implant implantation guide, a preliminary guide and guide tray for manufacturing the same

The present invention relates to a method for manufacturing a dental implant implantation guide used for more safely and accurately operating a dental implant, a preliminary guide for manufacturing the same, and a guide tray.

Dental implant surgery includes the operation of placing a dental implant fixture in the alveolar bone, and in the field of surgery, an implantation or surgical guide manufactured by various methods is used to safely and accurately place the dental implant fixture.

A representative example of such an implantation guide is disclosed in "a surgical guide for dental implants and a method for manufacturing an implant" of Korean Patent Registration No. 10-1797155, and the configuration is shown in FIG.

1 is a flowchart illustrating a method of manufacturing a surgical guide for dental implants according to the prior art.

As shown in FIG. 1, in the prior art, a primary scanning image and an oral CT image of the inside of the recipient's oral cavity are acquired, and the occlusal height between the tooth implantation target part and the opposing tooth is taken into consideration. a first step (s10) of obtaining the scanned secondary scanning image;

a second step (s20) of obtaining an integrated scanning image in consideration of the occlusal height of the person to be treated by pre-registration based on the common part displayed in the primary scanning image and the secondary scanning image;

a third step (s30) of obtaining a three-dimensional occlusal guide image by superimposing and main registration based on the registration marker image included in the integrated scanning image and the oral CT image; and

It consists of a fourth step (s40) in which the height of the crown is set based on the three-dimensional occlusal guide image and the surgical guide is manufactured.

The above-described prior art surgical guide manufacturing method is a problem in that the operation itself is complicated and the operation time is long because it has to go through a number of scanning operations, integration of the scanned images, and registration of the integrated scanning and CT images. there was

In addition, since inconsistency and/or accumulation of errors that may occur whenever each operation is performed, there is a problem in that the accuracy or precision of the guide, which is the final result, is not constant.

Korean Patent Registration No. 10-1797155

The present invention has been devised to solve the problems of the prior art described above, and the object of the present invention is to configure the work in a remarkably simplified manner by using only the CT image without the oral scan image, and to greatly reduce the work time. There is, to provide a method for manufacturing a dental implant implantation guide, a preliminary guide and a guide tray for manufacturing the same, in which the accuracy or precision of the guide, which is the final result, can be constantly maintained.

In order to achieve the object of the present invention described above,

One embodiment of the present invention, a first step of acquiring a CT image after biting a preliminary guide containing an impression resin on the implant site of a patient, and curing the impression resin;

a second step of designing implant placement information corresponding to the placement site using the CT image; and

a third step of completing the guide by forming a guide hole in the preliminary guide according to the designed implantation information;

includes,

The impression resin exists in a semi-solid state that exhibits a viscosity of 500 ps or less when measured by a cone/plate viscometer at 50° C. before the curing reaction, while after the curing reaction, a compression of at least 250 MPa measured according to ISO 604 A method for manufacturing a dental implant placement guide having a strength and a flexural strength of at least 90 MPa as measured according to ISO 178 is provided.

In addition, another embodiment of the present invention,

A first step of biting a preliminary guide containing an impression resin on the implant site of the patient;

a second step of partially curing the impression resin in the state in which the preliminary guide is bitten;

a third step of completely curing the partially cured impression resin after separating the partially cured preliminary guide from the implantation site to form a pattern matched with the implantation site;

a fourth step of re-attaching the preliminary guide to the implant site of the patient and acquiring a CT image;

a fifth step of designing implant placement information corresponding to the implantation site using the CT image; and

A sixth step of completing the guide by forming a guide hole in the preliminary guide according to the designed implantation information,

Before the second step, the impression resin is in a semi-solid state showing a viscosity of 500 ps or less when measured by a cone/plate viscometer at 50° C., while after the third step, at least 250 MPa as measured by ISO 604 A method for manufacturing a dental implant placement guide having a compressive strength of , and a flexural strength of at least 90 MPa measured according to ISO 178 is provided.

Another embodiment of the present invention is an impression resin for forming the pattern of the implant site; and

a guide tray having an impression resin accommodating part in which the impression resin is accommodated and a jig fastening part fastened to a processing jig installed in the processing equipment when an implantation guide hole is processed to complete the guide;

includes,

The impression resin is a photo-curable resin composition, and includes a (meth)acrylic monomer (or oligomer) as a resin matrix component thereof, and a (meth)acrylic monomer (or oligomer) having two or more functional groups, and

A preliminary guide that exists in a semi-solid state with a viscosity of 500 ps or less when measured by a cone/plate viscometer at 50°C is provided.

Another embodiment of the present invention is

Impression resin accommodating part which accommodates the impression resin, and has a shape corresponding to the anterior or premolar region of the maxilla or mandible; and

Including a jig fastening part coupled to a jig for processing for processing of an implantation guide hole,

The impression resin receiving portion has a first side located on the inside of the tooth, a bottom surface located on the end of the tooth, and a second side surface located on the outside of the tooth,

The second side is supported in contact with the jig for processing to provide a guide tray, characterized in that it includes a protruding jaw or a concave groove that catches vibrations during mechanical drilling of the implantation guide hole.

According to an exemplary embodiment, the impression resin accommodating part has a shape corresponding to the maxillary anterior/premolar region or the lower anterior/premolar region, the upper central incisor to the second molar region, or the lower central incisor to the second molar region. It may have a shape corresponding to the premolar/molar region or the lower premolar/molar region, or a shape corresponding to the second molar region from the maxillary central incisor and the second molar region from the mandibular central incisor.

According to the present invention, since only a CT image is used without an oral scan image, unlike the prior art, in the guide manufacturing, the operation can be performed remarkably easily, the operation time can be greatly reduced, and the accuracy or precision can be kept constant. In addition, it is possible to significantly reduce the implant operation time. In addition, it provides the advantage of effectively suppressing off-flavor, excessive heat phenomenon, deformation, etc. that may be issued during the manufacturing process of the dental implant placement guide.

1 is a flow chart showing a surgical guide for dental implants and a method of manufacturing a dental implant of the prior art;
Figure 2 is a flow chart showing a basic manufacturing method of the dental implant placement guide of the present invention;
Figure 3 is a flow chart showing the application manufacturing method of the dental implant placement guide of the present invention;
4 is an exemplary view of a tooth structure shown to aid understanding of the description of the present invention;
5A and 5B are exploded perspective views viewed from different sides of a first preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3;
Figure 5c is a view looking toward the grip portion of the guide tray of Figure 5a or 5b;
Fig. 5D is a cross-sectional view taken along line A1-A1 in Fig. 5B;
Fig. 5e is an assembled cross-sectional view of Fig. 5d;
6A and 6B are exploded perspective views viewed from different sides of a second preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3;
Figure 6c is a view looking toward the grip portion of the guide tray of Figure 6a or 6b;
Fig. 6D is a cross-sectional view taken along line A2-A2 in Fig. 6B;
Fig. 6e is an assembled cross-sectional view of Fig. 6d;
6F and 6G are exemplary views of the jaw structure shown to help understanding of the description of the second embodiment;
7A and 7B are exploded perspective views viewed from different sides of a third preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3;
Figure 7c is a view looking toward the grip portion of the guide tray of Figure 7a or 7b;
Fig. 7D is a cross-sectional view taken along line A3-A3 in Fig. 7B;
Fig. 7e is an assembled cross-sectional view of Fig. 7d;
8A and 8B are exploded perspective views viewed from different sides of a fourth preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3;
Fig. 8c is a view looking toward the grip portion of the guide tray of Fig. 8a or 8b;
Fig. 8D is a cross-sectional view taken along line A4-A4 in Fig. 8B; and
FIG. 8E is an assembled cross-sectional view of FIG. 8D .

Hereinafter, with reference to the accompanying drawings, a method of manufacturing a dental implant implantation guide of the present invention and a preliminary guide and a guide tray for manufacturing a guide according to various embodiments will be described in detail.

First, a basic and applied manufacturing method of a dental implant placement guide will be described with reference to FIGS. 2 and 3 . The basic manufacturing method and the applied manufacturing method can be selectively and advantageously applied according to the properties of the impression resin, in particular, the curing properties.

2 and 3 are flowcharts showing the basic and applied manufacturing method of the dental implant placement guide of the present invention.

Basic manufacturing method (3 steps)

As shown in Fig. 2, the basic manufacturing method of the present invention consists of three steps.

In the first step (S110), a CT image is acquired by biting the preliminary guide to the implant site of the patient.

At this time, the implantation site is modeled on the impression resin contained in the preliminary guide. This floating bone is used as a means for physically matching the implantation site and the guide to be finally completed. Such physical registration has very high precision and accuracy compared to the digital registration between the integrated image in which the scan image and the CT image are integrated and the implantation site in the prior art, and can greatly reduce the working time.

In the second step (S120), the implant placement information is designed to suit the placement site using the CT image.

At this time, a design program is used, and a CT image is called from the design program to design the implantation information such as the type and size of the implant, the placement position, the placement depth, and the placement angle in consideration of the occlusal relationship.

The third step (S130) completes the guide by forming a guide hole in the preliminary guide according to the designed implantation information.

At this time, in the first step (S110) on the design program, a preliminary guide image matching the preliminary guide held by the patient is selected and placed on the CT image on which the implantation information is designed. Then, a guide hole is designed in the preliminary guide image according to the implantation information to generate digital information for processing. After that, if the guide hole is processed and formed in the preliminary guide according to this digital information in the processing equipment, the guide is completed.

Applied Manufacturing Method (6 Steps)

As shown in FIG. 3, the applied manufacturing method of the present invention consists of six steps.

The first step (S110') bites the preliminary guide on the implant site of the patient.

At this time, the operator selects a preliminary guide suitable for the implantation site from among various preliminary guides. The operator puts this preliminary guide on the implantation site and presses it gently with a finger to make it sit to some extent.

In the second step (S120'), the impression resin is partially cured while the preliminary guide is bitten.

For partial curing, light is irradiated to the bitten preliminary guide, and halogen or LED light having a wavelength of 400 nm to 500 nm and an intensity of 800 mW/cm 2 to 1,000 mW/cm 2 is preferably used. Light irradiation is preferably made while moving slowly from the side surface to the upper surface of the preliminary guide for 30 to 60 seconds.

The reason for partial hardening is to ensure that the impression resin, which has a soft nature, is well maintained when the preliminary guide is removed from the implantation site, and to ensure that there is no difficulty in removing the impression resin due to the undercut of the implantation site. When fully cured, if there is an undercut, it will catch on the undercut and the preliminary guide cannot be removed normally.

In this embodiment, although the impression resin is partially cured while the preliminary guide is bitten, it is preferable to harden as much as possible as long as the tooth is damaged by curing heat or the preliminary guide can be removed normally by undercut. When the degree of hardening of the impression resin increases while the preliminary guide is bitten, the floating pattern is better maintained, which is because the degree of completion of physical matching will be improved soon.

In the third step (S130'), the preliminary guide is removed from the implantation site and the partially cured impression resin is completely cured.

For complete curing, the light used in the second step is used again and the light is irradiated while moving slowly to the upper, side and lower surfaces of the preliminary guide for 40 to 80 seconds. In the course of development, it was found that impression resins contract due to high heat generated when they are irradiated with light, so that the overall shrinkage can vary depending on the order of the irradiated surfaces. When irradiated with light, the floating bone could be most preferably used for physical registration as it had the lowest degree of shrinkage.

After the first, second, and third steps, the implantation site is modeled on the impression resin in the preliminary guide. This floating bone will be used as a means for physically matching the implantation site and the guide to be finally completed. This physical registration has very high precision and accuracy and greatly shortens the working time compared to the digital registration between the integrated image and the implantation site in which the scan image and the CT image are integrated in the prior art.

In the fourth step (S140'), the preliminary guide is re-attached to the implant placement site of the patient and a CT image is acquired.

At this time, the preliminary guide is bitten on the implantation site so that the bone floating on the impression resin and the implantation site are physically aligned.

In the fifth step (S150'), the implant placement information is designed to suit the placement site using the CT image.

At this time, a design program is used, and a CT image is called from the design program to design the implantation information such as the type and size of the implant, the placement position, the placement depth, and the placement angle in consideration of the occlusal relationship.

The sixth step (S160') completes the guide by forming a guide hole in the preliminary guide according to the designed implantation information.

At this time, in the first step (S110') on the design program, a preliminary guide image that matches the preliminary guide held by the patient is selected and placed on the CT image on which the implantation information is designed. Then, a guide hole is designed in the preliminary guide image according to the implantation information to generate digital information for processing. Then, if the guide hole is processed and formed in the preliminary guide according to this digital information in the processing equipment, the guide is completed.

Next, with reference to the other accompanying drawings, various embodiments of the preliminary guide and guide tray used in the manufacturing method of the dental implant implantation guide of the present invention described above will be described. The tooth structure is shown in FIG. 4 for reference in order to help the understanding of the description of the present embodiments.

first embodiment

A preliminary guide and a guide tray according to a first embodiment of the present invention will be described with reference to FIGS. 5A to 5E. 5A and 5B are exploded perspective views viewed from different sides of a first preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3, FIG. 5C is the gripping part of the guide tray of FIG. 5A or FIG. 5B 5D is a cross-sectional view taken along line A1-A1 of FIG. 5B, and FIG. 5E is an assembled cross-sectional view of FIG. 5D.

In the preliminary guide 100 according to the first embodiment, the implant placement site is the maxillary anterior teeth/premolars (No. 11, No. 12, No. 13, No. 14, No. 15, No. 21, No. 22, No. 23, No. 24 of FIG. 4). , 25) or mandibular incisors/premolars (No. 31, No. 32, No. 33, No. 34, No. 35, No. 41, No. 42, No. 43, No. 44, No. 45 of FIG. 4) .

5a to 5e, the preliminary guide 100 includes an impression resin 110 and a guide tray 120, and the guide tray 120 is an impression resin receiving part 130, a jig fastening part. 140 , a protective cover portion 150 and a gripping portion 160 .

The impression resin 110 is modeled after the implant placement site, and before use, it may be soft or ductile to facilitate the impression before hardening, and may be a dental resin that can be cured naturally or artificially after the impression. Hereinafter, the impression resin 110 will be described in detail, and the details regarding the impression resin may be applied to subsequent embodiments.

The impression resin 110 usable in this embodiment is in a semi-solid state before curing, and when measured by a cone/plate viscometer at 50° C., the viscosity is, for example, about 500 ps or less, specifically about 250 to 450 ps, more specifically about 300 to 400 ps. In this case, the impression resin is a polymer-based resin that can be photopolymerized by irradiation with light such as visible light, and may have physical properties exemplified below.

General light curing (polymerization) resins exhibit a large shrinkage rate (approximately 2 to 10%) during the curing process, and do not significantly affect demolding after polymerization (light polymerization) reaction. It is necessary to maintain the following polymerization shrinkage rates. Furthermore, the polymerization shrinkage rate may affect the physical properties of the impression resin after curing, and when the polymerization shrinkage rate is high, the degree of internal heat generation is large, thereby affecting the mechanical properties. For example, in particular, when the polymerization shrinkage rate is controlled within a low level (eg, about 0.1 to 0.4%), the mechanical properties (eg, mechanical properties) of the resin after curing are not significantly different, but at a certain level (e.g., about 2%), compressive strength may increase to a significant level (e.g., about 10% or more), while flexural strength and/or impact strength may decrease by about 10% or more . In addition, at a high polymerization shrinkage rate, toughness may tend to increase due to high internal heat generation. On the other hand, if the calorific value is too low during the photocuring process, sufficient photopolymerization may not occur and the hardness of the cured resin may decrease, which may cause phenomena such as chipping.

Considering that the polymerization shrinkage rate affects the various properties of the impression resin after curing according to the degree of heat generated during the photocuring (polymerization) process, the required polymerization shrinkage rate may be slightly different depending on the conditions of use. , for example about 2.3% or less, specifically about 2.1% or less, more specifically about 2% or less. Therefore, it is preferable to precisely control the content of the individual components constituting the impression resin 110 to ensure a balance between the required exothermic characteristics, polymerization shrinkage rate, mechanical properties, and the like as much as possible.

In this regard, when the light-curable resin has too low strength and hardness after curing, chipping may occur in a subsequent processing step, for example, a drilling process, making it difficult to manufacture an impression material having good properties. In this case, as a strength characteristic after curing, compression strength and flexural strength may be typically exemplified, and the compressive strength after curing is, for example, at least about 250 MPa, when measured according to ISO 604, specifically to at least about 280 MPa, more specifically, may be in the range of 290 to 320 MPa, but this may be understood as an exemplary meaning. Further, the flexural strength after curing, as measured by ISO 178, may be, for example, at least about 90 MPa, specifically at least about 95 MPa, and more specifically about 97 to 105 MPa.

On the other hand, the impression resin after curing may preferably have a predetermined level or more of hardness for smooth drilling as described above. When measured according to ASTM D2240, for example, at least about 75, specifically at least about 80 , more specifically, may exhibit a hardness (Shore D) in the range of about 85 to 95.

In addition, if high heat generation occurs during the photocuring (polymerization) process, an off-flavor from the components of the impression resin (for example, odor due to a characteristic acid component) may be a problem. It can be difficult. Therefore, it may be required to control the heat generation phenomenon to a certain level or less during light curing. Illustratively, it may be advantageous not to exceed, for example, a maximum of about 45 °C, specifically a maximum of about 42 °C, and more specifically a maximum of about 40 °C, of the impression resin during the curing process.

In this embodiment, as the impression resin for the guide, a dental resin composition having a low polymerization shrinkage rate and photocurability having good mechanical properties may be used. Such a resin composition is largely a resin matrix component including a (meth)acrylic monomer (or oligomer) commonly used, a (meth)acrylic monomer (or oligomer) having two or more functional groups of high molecular weight, and other components (e.g. For example, it may include at least one selected from an inorganic filler, a photoinitiator, a photoreducing agent, a stabilizer (or polymerization inhibitor), and the like.

- Resin matrix component

As an example, as a resin matrix component in the photo-curable resin composition, (i) urethane di(meth)acrylate, (ii) bifunctional bisphenol-A di(meth)acrylate, and (iii) polyfunctional (meth)acrylic acid rate may be included. At this time, in addition to components (i) to (iii), epoxy (meth) acrylate, and/or urethane (meth) acrylate as an additional (meth) acrylate component may be optionally included to constitute a resin matrix. .

In this regard, the equivalent of (meth)acrylate in the entire resin composition is, for example, about 0.02 to 0.2 equivalents, specifically about 0.03 to 0.15 equivalents, more specifically about 0.05 to 0.1 equivalents to constitute the resin matrix. You can control the ingredients. When adjusted in the above-described equivalent range, the level at which the treatment patient can tolerate the heat generated during the light curing reaction, specifically, the impression resin during the curing process, for example, it can be controlled to about 40 ℃ or less. In particular, when the oligomers and monomers used in the resin composition are meta (acrylic) functional groups having an average number of functional groups in the range of about 1 to 3, in the case of a monofunctional component, physical properties such as viscosity adjustment and reactivity of the resin can be supplemented. and the bifunctional component may supplement mechanical properties such as strength and/or hardness. In addition, the trifunctional component may improve reactivity such as a photocuring (polymerization) reaction rate.

On the other hand, when the resin matrix component used in the resin composition is in the form of a monomer, the molecular weight (M _w ) may be, for example, about 150 to 500, specifically about 180 to 330, more specifically about 200 to 300 range. , in the case of an oligomer, the molecular weight (M _w ) may be, for example, about 550 to 3000, specifically about 580 to 2500, and more specifically about 600 to 2000, but this may be understood as an example.

Therefore, it is possible to configure the resin matrix by using a combination of components (i) to (iii) within the above-mentioned equivalent range, or by further including an additional (meth)acrylate component in components (i) to (iii). .

Urethane di(meth)acrylate corresponding to component (i) may affect reactivity, improve toughness of the resin after curing, and/or provide a function of reducing yellowing. In this regard, one type or two or more types belonging to urethane dimethyl (meth)acrylate may be selected and used. According to a specific embodiment, it may be urethane dimethacrylate represented by the following formula (1).

[Formula 1]

In this case, the urethane di(meth)acrylate is, based on the total resin composition, for example, about 20 to 50% by weight (specifically about 25 to 45% by weight, more specifically about 30 to 40% by weight) to be used within the range can

The difunctional bisphenol-A di(meth)acrylate corresponding to component (ii) may provide the ability to improve the reactivity and mechanical properties (strength and/or hardness properties) of a light-curable (polymerizable) resin. . As such bifunctional bisphenol-A di(meth)acrylate, ethoxylated bisphenol-A di(meth)acrylate (the number of moles of ethoxy, for example, about 2 to 10, specifically about 3 to 8) may be. According to another exemplary embodiment, the difunctional bisphenol-A di(meth)acrylate may be bisphenol-A glycol dimethacrylate (bis-GMA) represented by Chemical Formula 2 below.

[Formula 2]

Bis-GMA according to Chemical Formula 2 may be advantageous because it has a relatively large molecular weight, high rigidity, accelerates the curing rate, and can provide good mechanical properties after curing.

In a specific embodiment, one or a combination of two or more of the compounds belonging to the difunctional bisphenol-A di(meth)acrylate may be used.

The difunctional bisphenol-A di(meth)acrylate, based on the total resin composition, is, for example, in the range of about 10 to 30% by weight (specifically about 12 to 28% by weight, more specifically about 15 to 25% by weight) can be used within

In this regard, each of the components (i) and (ii) may be advantageously used in the above-described content range to suppress the chipping phenomenon as much as possible in the drilling process for the impression resin after curing, but is not necessarily limited thereto.

On the other hand, in the case of component (iii), it is possible to provide a function of improving the reactivity and mechanical properties such as strength and/or hardness while controlling the viscosity of the impression resin. The number of functional groups in the polyfunctional (meth)acrylate may be, for example, about 2 to 6, specifically about 3 to 4, the corresponding compound is, for example, ethylene glycol dimethacrylate, di Ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, dimethanol dimethacrylate, 1,6-hexanediol dimethacrylate, 1,9-nonanediol dimethacrylate, ethoxylated trimethylol propane tri It may be methacrylate, trimethylolpropane trimethacrylate, and the like, and one or two or more of them may be selected and used.

In an exemplary embodiment, triethylene glycol dimethacrylate represented by the following formula (3) may be used as component (iii).

[Formula 3]

In addition, polyfunctional (meth)acrylate, based on the total resin composition, for example, about 2 to 15% by weight (specifically about 4 to 12% by weight, more specifically about 5 to 10% by weight) to be used within the range However, this may be understood as an example. However, when component (iii) is added in excess, it may be advantageous to appropriately adjust within the above-described range because a problem due to a strong exothermic phenomenon may be induced.

In addition, the (meth)acrylate component that can be optionally added in addition to the above-described resin matrix components (i) to (iii) is, based on the total resin composition, for example, up to about 10% by weight, specifically, up to about 5% by weight can contain up to

- inorganic filler

The photocurable resin composition may contain an inorganic filler. In the case of a conventional dental resin composition, it is mainly used for the purpose of improving general properties such as mechanical properties, surface properties, and aesthetics by increasing miscibility with the resin matrix, but in this embodiment, drilling after curing by improving mechanical properties And it may be added in a kind and content that can be grinded while minimizing phenomena such as chipping in a processing process such as a sanding operation.

In this regard, the inorganic filler may be used without surface treatment with a coupling agent used to minimize polymerization conversion. As such an inorganic filler, a silica-based filler may be typically used. Examples of silica-based fillers applicable in this embodiment include fused silica, synthetic silica, amorphous silica, glass ceramic, soda glass, lithium borosilicate glass, barium glass, strontium glass, zinc glass, borosilicate glass, crystal quartz, a combination thereof, or the like.

Alternatively, a component other than silica may be used as the inorganic filler. Talc, alumina, etc. can be illustrated as an example of such a component. At least one of these components may be used in place of the silica-based material, or a combination thereof may be used.

In this regard, the inorganic filler may be spherical and may exhibit non-porosity. In addition, the size of the inorganic filler may be selected, for example, in the range of about 5 to 150 μm, specifically about 10 to 100 μm, and more specifically about 30 to 80 μm.

However, whatever inorganic filler is used, it is preferable to satisfy the equivalent range of the resin in the entire resin composition. In this regard, the content of the inorganic filler, based on the total resin composition, for example, about 20 to 50% by weight, specifically about 22 to 45% by weight, more specifically about 25 to 40% by weight can be adjusted in the range.

- Photoinitiator

In this embodiment, a photoinitiator for photocuring (polymerization) may be used, which may be of a type capable of generating free-radicals when exposed to ultraviolet or visible light (especially, light in the visible light band suitable for dental use). . As such a photoinitiator, any type known in the art may be used without particular limitation. As an example, (bis) acylphosphine oxide (eg, 2.4.6-trimethyl benzoyl-diphenylphosphine oxide (TPO), 2,6-dimethyoxy benzoyl-diphenylphosphine oxide, 2,6-dichloro benzoyl-diphenylphosphine oxide, 2.4 .6-trimethyl benzoyl-methoxyphenylphosphine oxide, 2.4.6-trimethyl benzoyl-ethoxyphenylphosphine oxide, 2,3,5,6-tetramethyl benzoyl-diphenylphosphine oxide, benzoyl di-(2,6-dimethylphenyl)phosphonate, bis-(2, 6-dichloro benzoyl)phenylphosphine oxide, bis-(2,6-dichloro benzoyl)-2,5-dimethylphenylphosphine oxide, bis-(2,6-dichloro benzoyl)-4-prophylphenylphosphine oxide, bis-(2,6-dichloro benzoyl)-1-naphthylphosphine oxide, bis-(2,6-dimethoxy benzoyl)-2,4,4-trimethylpentylphosphine oxide, bis-(2,6-dimethoxy benzoyl)-2,5-dimethylphenylphosphine oxide, bis-(2 at least one selected from ,4,6-trimethyl benzoyl)phenylphosphine oxide, (2.5,6-trimethyl benzoyl)-2,4,4-trimethylpentylphosphine oxide, and the like). The exemplified (bis)acylphosphine oxide-based photoinitiator may generate free radicals in a relatively long wavelength band.

Alternatively, Camphorquinone can be used, and such a photoinitiator may be preferable because it effectively acts on a wavelength band of light irradiated by dental lighting or LED lighting. In some cases, the above-described (bis) acylphosphine oxide-based photoinitiator and Camphorquinone may be used in combination.

On the other hand, the photoinitiator, based on the total resin composition, for example, about 0.2 to 2% by weight, specifically about 0.3 to 1.5% by weight, more specifically about 0.4 to 1% by weight can be adjusted within the range.

- Photoreducing agent (optional ingredient)

According to one embodiment, the photo-reducing agent is selectively contained in the resin composition because the polymerized product is not completely reduced by photo-curing, and impurities such as residual oxygen functional groups remain, which may cause a problem of deterioration of cured properties. can be Ethyl-4-dimethylamino-benzoate (EDMAB) may be exemplified as such a photoreducing agent, but is not necessarily limited thereto, and an amine-based photoreducing agent known in the art (for example, 2,4-(dimethylamino)phenyl ethanol, 4-(dimethylamino)ethyl methacrylate, N,N-dimethyl-p-Toluidine, N,N-dimethyl aniline, etc.) may be used.

As an example, the light reducing agent, based on the total resin composition, for example, about 0.1 to 1.5% by weight, specifically about 0.2 to 1% by weight, more specifically about 0.3 to 0.5% by weight can be adjusted within the range .

- Other ingredients (optional ingredients)

On the other hand, the photo-curable resin composition may further include a predetermined amount of a polymerization inhibitor to prevent excessive polymerization, thereby enhancing preservation. A representative example of such a polymerization inhibitor may be Hydroquinone monomethyl ether (MeHQ), but is not necessarily limited thereto, and other polymerization inhibitors (eg, Butylated hydroxytoluene (BHT), 2(6)-di-tert-butyl-p- cresol., etc.) can also be used. In addition, the polymerization inhibitor, based on the total resin composition, for example, about 10 to 200 ppm, specifically about 20 to 150 ppm, more specifically about 30 to 100 ppm can be adjusted within the range.

In addition, various dyes (eg, diazo dye, phthalocyanine, perylene, anthraquinone, etc.) may be further added to secure hiding power, and the content thereof is based on the entire resin composition, for example, about 0.05 to 3 % by weight, specifically about 0.1 to 1% by weight, more specifically about 0.2 to 0.8% by weight.

As such, the resin composition can maintain variability before and after impression (impression), and can maintain an appropriate preservation state before the impression process is performed. In addition, appropriate curing (specifically photopolymerization and/or chemical polymerization) may be carried out after pulling.

The above-described impression resin 110 was prepared with the composition (composition 1) shown in Table 1 below, and two compositions (compositions 2 and 3) were prepared for comparison purposes.

division composition 1 composition 2 composition 3 DUDMA 35 7 30 Bis-GMA 19 35 9 TEGDMA 5 7 10 CQ 1.0 1.0 1.0 Filler 50 50 50

A photopolymerization reaction was performed on the three impression resin compositions listed in the table above. In this case, the photopolymerization reaction conditions were set using dental light (wavelength band: about 390 to 520 nm), a light power of 800 to 1700 mW/cm 2 , and a curing time of 120 seconds. After the photopolymerization reaction was completed, the physical properties of the cured impression resin were measured, and the results are shown in Table 2 below.

composition 1 composition 2 composition 3 note Hardness after light curing (Shore D) 85 60 80 ASTM D2240 Polymerization shrinkage (%) 1 or less 3 5 - Calorific value (℃) 40 40 55 -

- Polymerization shrinkage is measured using a volumetric dilatometer at 25°C according to the American Dental Association (ADA) standard, and the volume before curing (V1) and after curing (V2) is measured using the formula (V1-V2)/V2. Therefore, the average value was obtained after repeated measurement three times.

According to the above table, the impression resin composition according to Composition 1 exhibited high hardness after light curing (polymerization), and the polymerization shrinkage rate was maintained at a low level. In particular, it was possible to effectively suppress the exothermic phenomenon. On the other hand, in the case of Composition 2, as compared to Example 1, the urethane dimethacrylate (DUDMA) content was less than a certain level, and as a result, the calorific value was controlled to a relatively good level, but showed a high polymerization shrinkage rate, and the same as the hardness of the light-curing resin. Mechanical properties were lower than that of Composition 1. In addition, in the case of Composition 3, as a result of containing bis-GMA below a certain level, the polymerization shrinkage increased and the calorific value was also significantly high. The hardness was achieved at a relatively good level (Shore D 80), but due to excessive heat It was not suitable for application as an impression material due to increased shrinkage.

On the other hand, mechanical properties (compressive strength and flexural strength) of the cured product of the impression resin of Composition 1 were measured according to the conditions of use (winter, general, and summer), and the results are shown in Table 3 below.

analysis items unit Classification by type according to usage conditions note for winter
(0-15℃) general use
(16-25℃) for summer
(26-35℃) compressive strength MPa 295 295 301 ISO 604 flexural strength MPa 98 99 98 ISO 178

As described in the table above, the strength characteristics of the impression resin cured according to Example 1 were continuously maintained at good values depending on the season or temperature of use.

On the other hand, in the present invention, the exposed surface of the impression resin 110 is protected or the exposed surface is protected according to other needs, and in this embodiment, the exposed surface of the impression resin 110 is covered with a thin film 111. did. For this reason, not only the exposed surface of the impression resin 110 is protected from the external environment until use, but also when the implantation site is modeled, this film 111 is located between the implantation site and the impression resin 110, so that the impression resin 110 ) is easily removed from the implantation site. In addition, even if a pattern of the undercut portion is floated on the impression resin 110 , the impression resin 110 is easily separated from the implantation site by the film 111 even after partial curing is performed.

The film 111 may be made of transparent or translucent vinyl having a thickness of 0.03 mm to 0.20 mm, and is peeled off before the impression resin 110 is completely cured.

The impression resin receiving part 130 is a part in which the impression resin 110 is accommodated, and has a shape corresponding to the maxillary anterior/premolar region or the mandibular anterior/premolar region, which is an implantation site, and its size is changed according to the size of the implantation site. and can be applied.

The impression resin receiving unit 130 has an empty space that can accommodate the required amount of the impression resin 110 by connecting the first side 131, the bottom surface 133, and the second side 136 as one, In this example, polysulfone was used as the material.

The first side 131 is positioned on the inside of the tooth, and is inclined to fit the structure of the inside of the tooth. When the impression resin 110 is pushed into the first side 131 and hardened, a plurality of first grooves/holes 132 to which the impression resin 110 is firmly fixed are formed at intervals.

The first grooves/holes 132 have a trapezoidal angular shape, and the width Wi of the inlet is narrower than the width Wo of the outlet. Due to the angular structure with grooves and holes, the impression resin 110 filled in the first grooves/holes 132 is firmly held so as not to fall off after it is cured, and also the implantation guide hole to complete the guide. Even when this is processed, the impression resin 110 is held firmly without falling by the mechanically perforated force. The size and shape of the first grooves/holes 132 may be differently implemented in a range of exhibiting the same function according to the characteristics of the impression resin 110 .

The bottom surface 133 is positioned at the end of the tooth, and is formed to have a width that is about 3 times greater than the thickness of the tooth to accommodate the arrangement of teeth of various sizes and shapes.

The bottom surface 133 is provided with a plurality of matching markers 134 on the opposite surface. A plurality of matching markers 134 are selected in the third step in the basic manufacturing method of the present invention and in the sixth step in the applied manufacturing method described above, "select a preliminary guide image that matches the preliminary guide held by the patient, It is used for “putting it on the CT image for which the implantation information is designed”.

For the plurality of matching markers 134 , a radiopaque material may be used as a preferable material thereof, and at least five or more markers 134 are preferably arranged at a distance to increase the accuracy of registration. The alignment position takes on a triangular shape when any three markers 134 are connected. Although there are five markers 134 in the present embodiment, the number may be reduced or increased as necessary.

The plurality of registration markers 134 need to be sufficiently spaced from the teeth in order to identify positions in the CT image and to match the CT image and the guide tray image well. In particular, if there is a prosthesis made of a metal material, scattering may occur, thereby preventing identification of the markers 134 . It is known that this scattering occurs mainly laterally and has little effect upwards. In order to consider this point, a plurality of registration markers 134 were arranged at a distance so as to be positioned above the teeth as much as possible.

The plurality of matching markers 134 may be made of a radiopaque metal or ceramic material to have a ball type or a cylindrical shape. In this embodiment, "Gutta Percha", which is widely used for other purposes in dentistry, was used by changing its purpose. In addition, in order to obtain a clearer CT image, the marker 134 was made in a spherical shape and was completely embedded in the groove 135 formed on the bottom surface 133 without exposing the surface.

The plurality of registration markers 134 have a diameter of 0.3 mm to 5.0 mm, preferably 0.5 mm to 4.0 mm, and most preferably 1.0 mm to 2.0 mm.

The second side 136 is positioned on the outside of the tooth, and is formed almost vertically to fit the structure of the outside of the tooth. The second side 136 is formed with a plurality of second grooves/holes 137 at intervals to which the impression resin 110 is firmly fixed when the impression resin 110 is pushed in and hardened. Fields 138 are further formed. The plurality of second grooves/holes 137 and the plurality of holes 138 are formed in different shapes in consideration of functional aspects and convenience of manufacturing.

The second groove/holes 137 have a trapezoidal angular shape, and, like the first grooves/holes 132 , the width of the inlet is narrower than the width of the outlet. Due to the angular structure with grooves and holes, the impression resin 110 filled in the second grooves/holes 137 is firmly held so as not to fall off after it is cured, and also the implantation guide hole to complete the guide. Even when this is processed, the impression resin 110 is held firmly without falling by the mechanically perforated force. The size and shape of the second grooves/holes 137 may be differently implemented in a range of exhibiting the same function according to the characteristics of the impression resin 110 .

The second side 136 can check whether the guide tray 120 is properly mounted on the jig for processing to complete the guide on the outer surface, or vibration caused by the mechanically perforated force when the implantation guide hole is processed. A plurality of protruding jaws 139 to hold are formed with the grip portion 160 interposed therebetween. The protruding jaw 139 is detachably fixed to a processing jig to be provided on processing equipment (not shown). In the present embodiment, the protruding jaw is implemented as a means to catch the vibration, but a groove concave inward may be implemented otherwise.

In this embodiment, a plurality of grooves/holes or holes are implemented as a means for firmly fixing the impression resin, but the impression resin may be firmly fixed to the impression resin receiving portion using an adhesive or the like.

The jig fastening part 140 is a part separably fastened to the processing jig in the processing equipment when the insertion guide hole is processed to complete the guide, and is provided to be connected to the first side 131, and has two fastening holes (141) is formed.

The jig fastening part 140 is fixedly fastened to the processing jig in such a way that the fastening holes 141 are inserted into the fastening protrusions formed in the processing jig, and both sides thereof are strongly pressed up and down.

The protective cover portion 150 is a portion for preventing the impression resin 110 from adhering to the jig fastening portion 140 when a portion of the impression resin 110 is pushed out when the implant placement site is modeled on the impression resin 110 .

The protective cover part 150 has an insertion space 151 into which the jig fastening part 140 is inserted in close contact and an extension part 152 that comes into contact with the outer surface of the first side surface 131 . The extension part 152 has one side slightly raised so that the user can easily push the protective cover part 150 to the jig fastening part 140 with a finger, and the impression resin 110 in the impression resin receiving part 120 . ) can be prevented from being pushed out further toward the protective cover part 150 by this part when the impression resin 110 is pushed out.

The grip portion 160 is a portion held by a user's finger, and is connected to the outer surface of the second side surface 136 . The gripper 160 may be configured to be broken when unnecessary according to use.

In this embodiment, although a plurality of matching markers 134 are used as the matching means, a radiopaque material is applied to the surface of the impression resin receiving part 130 , the jig fastening part 140 or the gripping part 160 , or Alternatively, configurations are possible which make themselves of a radiopaque material.

second embodiment

A preliminary guide and a guide tray according to a second embodiment of the present invention will be described with reference to FIGS. 6A to 6E. 6A and 6B are exploded perspective views viewed from different sides of a second preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3, FIG. 6C is the gripping part of the guide tray of FIG. 6A or FIG. 6B 6D is a cross-sectional view taken along line A2-A2 of FIG. 6B, FIG. 6E is an assembled cross-sectional view of FIG. 6D, and FIGS. 6F and 6G are views illustrating a jaw structure.

In the preliminary guide 200 according to the second embodiment, the implant placement site is from the upper central incisor to the second molars (No. 21, No. 22, No. 23, No. 24, No. 25, No. 26, No. 27 of FIG. 4) and the mandible. It can be suitably applied from the central incisors to the second molars (No. 31, No. 32, No. 33, No. 34, No. 35, No. 36, No. 37 of FIG. 4). The third molars (wisdom teeth, No. 28, No. 38 in FIG. 4) are not considered because most patients remove these teeth, and even if they are not removed, they are removed during the implant procedure, so there is no need to actually consider them.

6A to 6E, the preliminary guide 200 includes an impression resin 210 and a guide tray 220, and the guide tray 220 is an impression resin receiving part 230, a jig fastening part. 240 , a protective cover part 250 and a grip part 260 are included.

The impression resin 210 is modeled after the implant placement site, and as described in Example 1, a dental resin that is cured naturally or artificially after use in a soft state before use may be used. As much as the details regarding the impression resin 210 are described above, the overlapping description will be omitted unless otherwise specified below.

The present invention is configured to protect the exposed surface of the impression resin 210 or to protect the exposed surface according to other needs, and in this embodiment, the exposed surface of the impression resin 210 is covered with a thin film 211 . For this reason, not only the exposed surface of the impression resin 210 is protected from the external environment until use, but also when the implantation site is modeled, this film 211 is located between the implantation site and the impression resin 210, so that the impression resin 210 ) is easily removed from the implantation site. In addition, even if the impression of the undercut portion is floated on the impression resin 210, the impression resin 210 is easily separated from the implantation portion by the film 211 even after partial curing is made.

The film 211 may be made of transparent or translucent vinyl having a thickness of 0.03 mm to 0.20 mm, and is peeled off before the impression resin 210 is completely cured.

The impression resin receiving part 230 is a part in which the impression resin 210 is accommodated. It can be applied by changing its size accordingly.

The impression resin receiving unit 230 has an empty space that can accommodate the required amount of the impression resin 210 by connecting the first side 231, the bottom surface 233, and the second side 236 as one, In this example, polysulfone was used as the material.

The first side 231 is positioned on the inside of the tooth, and is inclined to fit the structure of the inside of the tooth. When the impression resin 210 is pushed into the first side 231 and hardened, a plurality of grooves/holes 232 to which the impression resin 210 is firmly fixed are formed at intervals.

The plurality of grooves/holes 232 has a trapezoidal angular shape, and the width of the inlet is narrower than the width of the outlet, like the plurality of grooves/holes 132 of FIG. 5A or 5B . Due to the angular structure with grooves and holes, the impression resin 210 filled in the grooves/holes 232 is firmly held so as not to fall off after hardening, and an implantation guide hole is machined to complete the guide. Even when the impression resin 210 is held firmly without falling by the mechanically perforated force. The size and shape of the grooves/holes 232 may be differently implemented in a range that exhibits the same function according to the characteristics of the impression resin 210 .

The bottom surface 233 is positioned at the end of the tooth, and is formed to have a width about 3 times greater than the thickness of the tooth to accommodate the arrangement of teeth of various sizes and shapes. Unlike the bottom surface 133 of FIG. 5A or FIG. 5B , the bottom surface 233 has an end portion, that is, an open portion 233a formed at the portion where the molars are located.

As for the occlusion of the teeth, as shown in FIGS. 6F and 6G shown for reference, the upper and lower jaws open and close around the temporomandibular joint, so that the molars on the inside of the upper and lower jaws first occlude.

As a result of many experiments, when the hard bottom surface 233 and the impression resin 210 exist between these molars, there is a space between the teeth other than the molars, so that the other teeth were not normally occluded. In order to prevent this phenomenon, in the present embodiment, an opening (233a) is formed in the portion where the molars are in contact or are located.

The opening 233a may be provided with a thin protective film 233b connected to the bottom surface 233 in order to prevent the impression resin 210 from being pushed out by being pressed by the teeth when the occlusion is formed.

The bottom surface 233 is provided with a plurality of matching markers 234 on the opposite surface. A plurality of matching markers 234 are selected in the third step in the basic manufacturing method of the present invention and in the sixth step in the applied manufacturing method described above, "select a preliminary guide image that matches the preliminary guide held by the patient, It is used for “putting it on the CT image for which the implantation information is designed”.

For the plurality of matching markers 234 , a radiopaque material may be used as a preferred material thereof, and at least five or more markers 234 are preferably aligned at a distance in order to increase the accuracy of registration. The alignment position takes on a triangular shape when any three markers 234 are connected. Although there are six markers 234 in the present embodiment, the number may be reduced or increased as necessary.

The plurality of registration markers 234 need to be sufficiently spaced from the teeth in order to identify the position in the CT image and to match the CT image and the guide tray image well. In particular, when there is a prosthesis made of a metal material, scattering may occur, thereby preventing identification of the markers 234 . It is known that this scattering occurs mainly laterally and has little effect upwards. In order to consider this point, a plurality of registration markers 234 were arranged at a distance to be positioned above the teeth as much as possible.

The plurality of matching markers 234 may be made of a metal or ceramic material having radiopacity as a material to have a ball type or a cylindrical shape. In this embodiment, "Gutta Percha", which is widely used for other purposes in dentistry, was used by changing its purpose. In addition, in order to obtain a clearer CT image, the marker 234 was made in a spherical shape and was completely embedded in the groove 235 formed on the bottom surface 233 without exposing the surface.

The plurality of registration markers 234 have a diameter of 0.3 mm to 5.0 mm, preferably 0.5 mm to 4.0 mm, and most preferably 1.0 mm to 2.0 mm.

The second side 236 is positioned on the outside of the tooth, and is formed almost vertically to fit the structure of the outside of the tooth. When the impression resin 210 is pushed into the second side 236 and hardened, a plurality of holes 237 to which the impression resin 210 is firmly fixed are formed at intervals.

The second side 236 of this embodiment is different from the second side 133 of the first embodiment of FIGS. 5A or 5B for the convenience of manufacture or use, the hole 237 is formed without forming a groove/hole 137. more formed. Due to this structure, after the impression resin 210 filled in the holes 237 is cured, it is held firmly so as not to fall off, and also when the implantation guide hole is processed to complete the guide, the impression resin 210 is mechanically It is held firmly without falling due to the force of the perforation.

The second side 236 can check whether the guide tray 220 is properly mounted on the jig for processing in order to complete the guide on the outer surface, or vibration caused by the mechanically perforated force when the implantation guide hole is processed. A holding protrusion 239 is formed on the side of the grip portion 260 . The protruding jaw 239 is detachably fixed to a processing jig to be provided on processing equipment (not shown). In the present embodiment, the protruding jaw is implemented as a means to catch the vibration, but a groove concave inward may be implemented otherwise.

In this embodiment, a plurality of grooves/holes or holes are implemented as a means for firmly fixing the impression resin, but the impression resin may be firmly fixed to the impression resin receiving portion using an adhesive or the like.

The jig fastening part 240 is a part that is separably fastened to the processing jig in the processing equipment when the insertion guide hole is processed to complete the guide, and is provided to be connected to the first side 231, and has two fastening holes (241) is formed.

The jig fastening part 240 is fixedly fastened to the processing jig in such a way that the fastening holes 241 are inserted into the fastening protrusions formed in the processing jig, and both sides thereof are strongly pressed up and down.

The protective cover part 250 is a part for preventing the impression resin 210 from adhering to the jig fastening part 240 when a part of the impression resin 210 is pushed out when the implant placement site is modeled on the impression resin 210 .

The protective cover part 250 has an insertion space 251 into which the jig fastening part 240 is inserted in close contact and an extension part 252 that comes into contact with the outer surface of the first side 231 . The extension part 252 has one side slightly raised so that the user can easily push the protective cover part 250 to the jig fastening part 240 with a finger, and the impression resin 210 in the impression resin receiving part 220 ) can be prevented from being pushed out further toward the protective cover part 250 by this part when the impression resin 210 is pushed out.

In addition, the protective cover part 250 is formed with a plurality of protrusions 253 fitted into the grooves/holes 232 on the first side 231 . When the plurality of protrusions 253 are inserted into the grooves/holes 232 , the holes 232 are not all filled, and the impression resin 210 may be pushed in and filled therebetween.

The grip portion 260 is a portion held by the user with a finger, and is connected to the outer surface of the second side surface 236 . The grip part 260 may be configured to be broken when unnecessary according to use.

In this embodiment, although a plurality of matching markers 234 are used as a matching means, a radiopaque material is applied to the surface of the impression resin receiving part 230 , the jig fastening part 240 or the gripping part 260 , or Alternatively, configurations are possible which make themselves of a radiopaque material.

Although illustration and description are omitted for reasons of overlapping of all configurations, the preliminary guide 200 according to the second embodiment may be implemented by changing the mirror-symmetric structure, and the preliminary guide of the modified embodiment having this mirror-symmetric structure is The implant placement site is from the maxillary central incisor to the second molars (No. 11, 12, 13, 14, 15, 16, 17 in FIG. 4) and from the mandibular central incisor to the second molar (No. 41, 42 in FIG. 4) No., No. 43, No. 44, No. 45, No. 46, No. 47) can be suitably applied to the site. The third molars (wisdom teeth, No. 18, No. 38 in FIG. 4) are not considered because most patients remove them, and even if they are not removed, there is no need to actually consider them because they are removed during the implant procedure.

3rd embodiment

A preliminary guide and a guide tray according to a third embodiment of the present invention will be described with reference to FIGS. 7A to 7E. 7A and 7B are exploded perspective views viewed from different sides of a third preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3, FIG. 7C is a gripping part side of the guide tray of FIG. 7D is a cross-sectional view taken along line A3-A3 of FIG. 7B, and FIG. 7E is an assembled cross-sectional view of FIG. 7D.

In the preliminary guide 300 according to the third embodiment, the implant placement sites are maxillary premolars/molars (No. 14, 15, 16, and 17 in FIG. 4) and mandibular premolars/molars (No. 34 and 35 in FIG. 4) , No. 36, No. 37) can be suitably applied to the site. The third molars (wisdom teeth, No. 18 and No. 38 in FIG. 4) are not considered because most patients remove these teeth, and even if they are not removed, they are removed during the implant procedure, so there is no need to actually consider them.

7A to 7E, the preliminary guide 300 includes an impression resin 310 and a guide tray 320, and the guide tray 320 is an impression resin receiving part 330, a jig fastening part. 340 , a protective cover part 350 and a grip part 360 are included.

The impression resin 310 is modeled after the implant placement site, and as described in Example 1, a dental resin that is cured naturally or artificially after use in a soft state before use may be used. As the details regarding the impression resin 310 are as described above, the overlapping description will be omitted unless otherwise specified below.

The present invention is configured to protect the exposed surface of the impression resin 310 or to protect the exposed surface according to other needs, and in this embodiment, the exposed surface of the impression resin 310 is covered with a thin film 311 . For this reason, not only the exposed surface of the impression resin 310 is protected from the external environment until use, but also when the implantation site is modeled, this film 311 is between the implantation site and the impression resin 310, so that the impression resin 310 is ) is easily removed from the implantation site. In addition, even if a pattern of the undercut portion is floated on the impression resin 310, the impression resin 310 is easily separated from the implantation site by the film 311 even after partial curing is performed.

The film 311 may be made of transparent or translucent vinyl having a thickness of 0.03 mm to 0.20 mm, and is peeled off before the impression resin 310 is completely cured.

The impression resin receiving part 330 is a part in which the impression resin 310 is accommodated, and has a shape corresponding to the maxillary premolar / molar part or the lower premolar / molar part, which is an implantation site, and its size is changed to match the size of the implantation site. and can be applied.

The impression resin receiving unit 330 is connected to one of the first side 331, the bottom surface 333 and the second side 336 to have an empty space that can accommodate the required amount of the impression resin 310, In this example, polysulfone was used as the material.

The first side 331 is positioned on the inside of the tooth and is inclined to fit the structure of the inside of the tooth. When the impression resin 310 is pushed into the first side 331 and hardened, a plurality of grooves/holes 332 to which the impression resin 310 is firmly fixed are formed at intervals.

The plurality of grooves/holes 332 has a trapezoidal angled shape, and, like the plurality of grooves/holes 132 of FIGS. 5A or 5B , the width of the inlet is narrower than the width of the outlet. Due to the angular structure with grooves and holes, the impression resin 310 filled in the grooves/holes 332 is firmly held so as not to fall off after it is cured, and an implantation guide hole is machined to complete the guide. Even when the impression resin 310 is held firmly without falling by the force of mechanical perforation. The size and shape of the grooves/holes 332 may be differently implemented in a range that exhibits the same function according to the characteristics of the impression resin 310 .

The bottom surface 333 is positioned at the end of the tooth, and is formed to have a width about 3 times greater than the thickness of the tooth to accommodate the arrangement of teeth of various sizes and shapes. The bottom surface 333, like the bottom surface 233 of FIG. 6A or 6B, has an end portion, that is, an opening 333a formed at the portion where the molars are located, for the reason described in the second embodiment. As such, a detailed description is omitted.

The opening 333a may be provided with a thin protective film 333b connected to the bottom surface 333 in order to prevent the impression resin 310 from being pushed out by the tooth pressed when the occlusion is formed.

The bottom surface 333 is provided with a plurality of matching markers 334 on the opposite surface. A plurality of matching markers 334 are selected in the third step in the basic manufacturing method of the present invention and in the sixth step in the applied manufacturing method described above, "select a preliminary guide image that matches the preliminary guide held by the patient, It is used for “putting it on the CT image for which the implantation information is designed”.

For the plurality of matching markers 334, a radiopaque material may be used as a preferred material thereof, and at least five or more markers 334 are preferably aligned at a distance in order to increase the accuracy of registration. The alignment position has a triangular shape when any three markers 334 are connected. Although there are five markers 334 in the present embodiment, the number may be reduced or increased as necessary.

The plurality of registration markers 334 need to be sufficiently spaced from the teeth in order to identify positions in the CT image and to match the CT image and the guide tray image well. In particular, when there is a prosthesis made of a metal material, scattering may occur, thereby preventing identification of the markers 334 . It is known that this scattering occurs mainly laterally and has little effect upwards. In order to consider this point, a plurality of registration markers 334 were arranged at a distance to be positioned above the teeth as much as possible.

The plurality of matching markers 334 may be made of a radiopaque metal or ceramic material to have a ball type or a cylindrical shape. In this embodiment, "Gutta Percha", which is widely used for other purposes in dentistry, was used by changing its purpose. In addition, in order to obtain a clearer CT image, the marker 334 was made in a spherical shape and was completely embedded in the groove 335 formed in the bottom surface 333 without exposing the surface.

The plurality of registration markers 334 have a diameter of 0.3 mm to 5.0 mm, preferably 0.5 mm to 4.0 mm, and most preferably 1.0 mm to 2.0 mm.

The second side 336 is positioned on the outside of the tooth, and is formed almost vertically to fit the structure of the outside of the tooth. When the impression resin 310 is pushed into the second side 336 and hardened, a plurality of holes 337 to which the impression resin 310 is firmly fixed are formed at intervals.

The second side 336 of this embodiment has many holes 337 like the second side 233 of the second embodiment of FIG. 6A or 6B for convenience of manufacture or use. Due to this structure, the impression resin 310 filled in the holes 337 is held firmly so as not to fall off after it is cured, and the impression resin 310 is mechanically It is held firmly without falling due to the force of the perforation.

The second side 336 can check whether the guide tray 320 is properly mounted on the processing jig to complete the guide on the outer surface, or vibration caused by the mechanically perforated force when the implantation guide hole is processed. A holding protrusion 339 is formed on the side of the grip portion 360 . The protruding jaw 339 is detachably fixed to a processing jig to be provided on processing equipment (not shown). In the present embodiment, the protruding jaw is implemented as a means to catch the vibration, but a groove concave inward may be implemented otherwise.

In this embodiment, although a plurality of matching markers 334 are used as the matching means, a radiopaque material is applied to the surface of the impression resin receiving part 330 or the impression resin receiving part 330 itself is made radiopaque. It is also possible to make a configuration from materials.

In addition, although a plurality of grooves/holes or holes are implemented as a means for firmly fixing the impression resin in this embodiment, the impression resin may be firmly fixed to the impression resin receiving portion using an adhesive or the like.

The jig fastening part 340 is a part separably fastened to the processing jig in the processing equipment when the insertion guide hole is processed to complete the guide, and is provided to be connected to the first side 331, and has two fastening holes (341) is formed.

The jig fastening part 340 is fixedly fastened to the processing jig in such a way that the fastening holes 341 are inserted into the fastening protrusions formed in the processing jig, and both sides thereof are strongly pressed up and down.

The protective cover part 350 is a part for preventing the impression resin 310 from sticking to the jig fastening part 340 when a part of the impression resin 310 is pushed out when the implant placement site is modeled on the impression resin 310 .

The protective cover part 350 has an insertion space 351 into which the jig fastening part 340 is inserted in close contact and an extension part 352 that comes into contact with the outer surface of the first side surface 331 . The extension part 352 has one side slightly raised so that the user can easily push the protective cover part 350 to the jig fastening part 340 with a finger, and the impression resin 310 in the impression resin receiving part 320. ) can be prevented from being pushed out further toward the protective cover part 350 by this part when the impression resin 310 is pushed out.

In addition, the protective cover part 350 is formed with a plurality of protrusions 353 fitted into the grooves/holes 332 on the first side 331 . When the plurality of protrusions 353 are inserted into the grooves/holes 332 , the holes 332 are not all filled, and the impression resin 310 may be pushed in and filled therebetween.

The grip portion 360 is a portion held by the user with a finger, and is connected to the outer surface of the second side surface 336 . The grip part 360 may be configured to be broken when unnecessary according to use.

In this embodiment, although a plurality of matching markers 334 are used as a matching means, a radiopaque material is applied to the surface of the impression resin receiving part 330, the jig fastening part 340 or the gripping part 360, or Alternatively, configurations are possible which make themselves of a radiopaque material.

Although illustration and description are omitted for reasons of overlapping of all configurations, the preliminary guide 300 according to the third embodiment can be implemented by changing to a mirror-symmetric structure, and the preliminary guide of the modified embodiment having this mirror-symmetric structure is The implant placement site is suitable for maxillary premolars/molars (No. 24, 25, 26, and 27 in FIG. 4) and mandibular premolars/molars (No. 44, 45, 46, and 47 in FIG. 4). can The third molars (wisdom teeth, No. 28, No. 48 in FIG. 4) are not considered because most patients remove them, and even if they are not removed, they are removed during the implant procedure, so there is no need to actually consider them.

4th embodiment

A preliminary guide and a guide tray according to a fourth embodiment of the present invention will be described with reference to FIGS. 8A to 8E. 8A and 8B are exploded perspective views viewed from different sides of a fourth preferred embodiment of a preliminary guide and a guide tray for manufacturing the guide of FIG. 2 or FIG. 3, and FIG. 8C is a gripping part side of the guide tray of FIG. 8D is a cross-sectional view taken along A4-A14 of FIG. 8B, and FIG. 8E is an assembled cross-sectional view of FIG. 8D.

The preliminary guide 400 according to the fourth embodiment has an implant placement site from the maxillary central incisor to the second molars (No. 11, No. 12, No. 13, No. 14, No. 15, No. 16, No. 17, No. 21, No. 22, No. 23, No. 24, No. 25, No. 26, No. 27) and from the mandibular central incisor to the second molar (No. 31, No. 32, No. 33, No. 34, No. 35, No. 36, No. 37, 41, 42, 43, 44, 45, 46, 47) may be suitably applied.

8A to 8E, the preliminary guide 400 includes an impression resin 410 and a guide tray 420, and the guide tray 420 is an impression resin receiving part 430, a jig fastening part. 440 , a protective cover portion 450 and a gripping portion 460 are included.

The impression resin 410 is modeled after the implant site, and as described in Example 1, a dental resin that is cured naturally or artificially after use in a soft state before use may be used. As much as the details regarding the impression resin 410 have been described above, the overlapping description will be omitted hereinafter unless otherwise specified.

The present invention is configured to protect the exposed surface of the impression resin 410 or to protect the exposed surface according to other needs, and in this embodiment, the exposed surface of the impression resin 410 is covered with a thin film 411 . For this reason, not only the exposed surface of the impression resin 410 is protected from the external environment until use, but also when the implantation site is modeled, this film 411 is located between the implantation site and the impression resin 410, so the impression resin 410 is ) is easily removed from the implantation site. In addition, even if a pattern of the undercut portion is floated on the impression resin 410 , the impression resin 410 is easily separated from the implantation site by the film 411 even after partial curing is performed.

The film 411 may be made of transparent or translucent vinyl having a thickness of 0.03 mm to 0.20 mm, and is peeled off before the impression resin 410 is completely cured.

The impression resin receiving part 430 is a part in which the impression resin 410 is accommodated. Its size can be changed and applied.

The impression resin receiving unit 430 has an empty space that can accommodate the required amount of the impression resin 410 by connecting the first side 431, the bottom surface 433, and the second side 436 as one, In this example, polysulfone was used as the material.

The first side 431 is positioned on the inside of the tooth, and is inclined to fit the structure of the inside of the tooth. When the impression resin 410 is pushed into the first side 431 and cured, a plurality of first grooves/holes 432 to which the impression resin 410 is firmly fixed are formed at intervals.

The first groove/holes 432, like the first grooves/holes 132 according to the first embodiment of FIG. 5A or FIG. 5B, have a trapezoidal angled shape and have an inlet width narrower than an outlet width. has been Due to the angular structure with grooves and holes, the impression resin 410 filled in the first grooves/holes 432 is firmly held so as not to fall off after it is cured, and also the implantation guide hole to complete the guide. Even when this is processed, the impression resin 410 is held firmly without falling by the mechanically perforated force. The size and shape of the first groove/holes 432 may be differently implemented in a range that exhibits the same function according to the characteristics of the impression resin 410 .

The bottom surface 433 is positioned at the end of the tooth, and is formed to have a width that is about 3 times greater than the thickness of the tooth to accommodate the arrangement of teeth of various sizes and shapes. The bottom surface 433, like the bottom surface 233 of FIG. 6A or 6B, has an end portion, that is, an opening 433a formed at the portion where the molars are located, for the reason described in the second embodiment. As such, a detailed description is omitted.

The opening 433a may be provided with a thin protective film 433b connected to the bottom surface 433 in order to prevent the impression resin 410 from being pushed out by the teeth when the occlusion is formed.

The bottom surface 433 is provided with a plurality of matching markers 434 on the opposite surface. A plurality of matching markers 434 are selected in the third step in the basic manufacturing method of the present invention and in the sixth step in the applied manufacturing method described above, "select a preliminary guide image that matches the preliminary guide held by the patient, It is used for “putting it on the CT image for which the implantation information is designed”.

For the plurality of matching markers 434, a radiopaque material may be used as a preferred material thereof, and at least five or more markers 434 are preferably aligned at a distance in order to increase the accuracy of registration. The alignment position takes on a triangular shape when any three markers 434 are connected. Although there are nine markers 434 in the present embodiment, the number may be reduced or increased as necessary.

The plurality of registration markers 434 need to be sufficiently spaced from the teeth in order to identify positions in the CT image and to improve the registration between the CT image and the guide tray image. In particular, when there is a prosthesis made of a metal material, scattering may occur, thereby preventing identification of the markers 434 . It is known that this scattering occurs mainly laterally and has little effect upwards. In order to consider this point, a plurality of registration markers 434 were arranged at a distance so as to be positioned above the teeth as much as possible.

The plurality of matching markers 434 may be made of a radiopaque metal or ceramic material to have a ball type or a cylindrical shape. In this embodiment, "Gutta Percha", which is widely used for other purposes in dentistry, was used by changing its purpose. In addition, in order to obtain a clearer CT image, the marker 434 was made in a ball type, and was completely embedded in the groove 135 formed on the bottom surface 133 without exposing the surface.

The plurality of registration markers 434 have a diameter of 0.3 mm to 5.0 mm, preferably 0.5 mm to 4.0 mm, and most preferably 1.0 mm to 2.0 mm.

The second side 436 is positioned on the outside of the tooth, and is formed almost vertically to fit the structure of the outside of the tooth. When the impression resin 410 is pushed into the second side 436 and cured, a plurality of second grooves/holes 437 to which the impression resin 410 is firmly fixed are formed at intervals.

The second groove/holes 437 have a trapezoidal angled shape, and, like the first grooves/holes 432 , the width of the inlet is narrower than the width of the outlet. Due to the angular structure with grooves and holes, the impression resin 410 filled in the second grooves/holes 437 is firmly held so as not to fall off after it is cured, and also the implantation guide hole to complete the guide. Even when this is processed, the impression resin 410 is held firmly without falling by the mechanically perforated force. The size and shape of the second grooves/holes 437 may be differently implemented in a range that exhibits the same function according to the characteristics of the impression resin 410 .

The second side 436 can check whether the guide tray 420 is properly mounted on the processing jig to complete the guide on the outer surface, or vibration caused by the mechanically drilled force when the implantation guide hole is processed. A plurality of protruding jaws 439 for holding are formed with the gripping portion 460 interposed therebetween. The protruding jaw 439 is detachably fixed to a processing jig to be provided on processing equipment (not shown). In the present embodiment, the protruding jaw is implemented as a means to catch the vibration, but a groove concave inward may be implemented otherwise.

In this embodiment, although a plurality of matching markers 434 are used as the matching means, a radiopaque material is applied to the surface of the impression resin receiving part 430 or the impression resin receiving part 430 itself is radiopaque. It is also possible to make a configuration from materials.

In addition, although a plurality of grooves/holes or holes are implemented as a means for firmly fixing the impression resin in this embodiment, the impression resin may be firmly fixed to the impression resin receiving portion using an adhesive or the like.

The jig fastening part 440 is a part separably fastened to the processing jig in the processing equipment when the insertion guide hole is processed to complete the guide, and is provided to be connected to the first side 431, and has four fastening holes (441) is formed.

The jig fastening part 440 is fixedly fastened to the processing jig in such a way that the fastening holes 441 are inserted into the fastening protrusions formed in the processing jig, and both sides thereof are strongly pressed up and down.

The protective cover portion 450 is a portion for preventing the impression resin 410 from adhering to the jig fastening portion 440 when a portion of the impression resin 410 is pushed out when the implant placement site is modeled on the impression resin 410 .

The protective cover part 450 has an insertion space 451 into which the jig fastening part 440 is inserted in close contact and an extension part 452 that comes into contact with the outer surface of the first side surface 431 . The extension portion 452 has one side slightly raised so that the user can easily push the protective cover portion 450 to the jig fastening portion 440 with a finger, and the impression resin 410 in the impression resin receiving portion 420 . ) can be prevented from being pushed out further toward the protective cover part 450 by this part when the impression resin 410 is pushed out.

The grip portion 460 is a portion held by the user with a finger, and is connected to the outer surface of the second side surface 436 . The grip part 460 may be configured to be broken when unnecessary according to use.

In this embodiment, although a plurality of matching markers 434 are used as the matching means, a radiopaque material is applied to the surface of the impression resin receiving part 430, the jig fastening part 440 or the gripping part 460, or Alternatively, configurations are possible which make themselves of a radiopaque material.

In the above, although various embodiments of the present invention have been described, those of ordinary skill in the art can add, change, or delete components within the scope that does not depart from the spirit of the present invention described in the claims. Or it will be possible to variously modify and change the present invention by addition, etc., which will also be included within the scope of the present invention.

100,200,300,400 : preliminary guide
110,210,310,410: impression resin
120,220,320,420: guide tray
130,230,330,430: Impression resin receiving part
140,240,340,440: jig fastening part
150,250,350,450: protective cover part
160,260,360,460: grip part

Claims (159)

A first step of acquiring a CT image after biting a preliminary guide containing an impression resin on the implant site of the patient and curing the impression resin;
a second step of designing implant placement information corresponding to the placement site using the CT image; and
a third step of completing the guide by forming a guide hole in the preliminary guide according to the designed implantation information;
includes,
The impression resin exists in a semi-solid state that exhibits a viscosity of 500 ps or less when measured by a cone/plate viscometer at 50° C. before the curing reaction, while after the curing reaction, a compression of at least 250 MPa measured according to ISO 604 A method for manufacturing a dental implant placement guide having a strength and a flexural strength of at least 90 MPa as measured according to ISO 178. A first step of biting a preliminary guide containing an impression resin on the implant site of the patient;
a second step of partially curing the impression resin in the state in which the preliminary guide is bitten;
a third step of completely curing the partially cured impression resin after separating the partially cured preliminary guide from the implantation site to form a pattern matched with the implantation site;
a fourth step of re-attaching the preliminary guide to the implant site of the patient and acquiring a CT image;
a fifth step of designing implant placement information corresponding to the implantation site using the CT image; and
A sixth step of completing the guide by forming a guide hole in the preliminary guide according to the designed implantation information,
Before the second step, the impression resin is in a semi-solid state showing a viscosity of 500 ps or less when measured by a cone/plate viscometer at 50° C., while after the third step, at least 250 MPa as measured by ISO 604 A method of manufacturing a dental implant placement guide having a compressive strength of , and a flexural strength of at least 90 MPa as measured according to ISO 178. The method of claim 1, wherein the impression resin after the curing reaction exhibits a hardness of at least 75 as measured by ASTM D2240. The method of claim 2, wherein the impression resin fully cured after the third step exhibits a hardness of at least 75 as measured by ASTM D2240.
The method of claim 1, wherein the impression resin has a polymerization shrinkage rate of 2.3% or less during the curing reaction. The method of claim 2, wherein the impression resin has a polymerization shrinkage of 2.3% or less during partial hardening of the second step and full hardening of the third step. The method of claim 1 or 2, wherein the impression resin is maintained at a maximum of 45°C during the curing reaction. The (meth)acrylic monomer (or oligomer) of claim 1 or 2, wherein the impression resin is a photo-curable resin composition, and a (meth)acrylic monomer (or oligomer) as a resin matrix component thereof, and two or more functional groups Method of manufacturing a dental implant placement guide comprising a. The method according to claim 8, wherein when the resin matrix component is in the form of a monomer, the molecular weight (M _w ) is in the range of 150 to 500, and when the resin matrix component is in the form of an oligomer, the molecular weight (M _w ) is in the range of 550 to 3000 Method of manufacturing a dental implant placement guide, characterized in that. The method of claim 8, wherein the resin matrix component comprises: (i) urethane di(meth)acrylate, (ii) bifunctional bisphenol-A di(meth)acrylate, and (iii) polyfunctional (meth)acrylate Containing, and the equivalent of (meth) acrylate in the total light-curable resin composition is a method of manufacturing a dental implant placement guide, characterized in that it is adjusted to be in the range of 0.02 to 0.2 equivalent. The dental implant placement according to claim 10, wherein the resin matrix component further comprises up to 10% by weight of epoxy (meth)acrylate, and/or urethane (meth)acrylate, based on the total resin composition. How to make a guide. The method of claim 8, wherein the photo-curable resin composition comprises at least one component selected from the group consisting of an inorganic filler, a photoinitiator, a photoreducing agent, and a stabilizer. 11. The method of claim 10, based on the resin composition, the content of the urethane di(meth)acrylate is 20 to 50% by weight, the content of the bifunctional bisphenol-A di(meth)acrylate is 10 to 30% by weight , And the content of the polyfunctional (meth) acrylate is a method of manufacturing a dental implant placement guide, characterized in that each is controlled in the range of 2 to 15% by weight. The ethoxylated bisphenol-A di(meth)acrylate and bisphenol-A glycol dimethacrylate according to claim 10, wherein the difunctional bisphenol-A di(meth)acrylate has an ethoxy mole number of 2 to 10. (bis-GMA) is at least one selected from the group consisting of, and
The polyfunctional (meth)acrylate is ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, dimethanol dimethacrylate, 1,6-hexanediol dimethacrylate, 1,9-nonanediol dimethacrylate, ethoxylated trimethylol propane trimethacrylate and trimethylolpropane trimethacrylate manufacturing method of a dental implant placement guide, characterized in that at least one selected from the group consisting of. The method of claim 12, wherein the size of the inorganic filler is in the range of 5 to 150 μm, and its content is adjusted in the range of 20 to 50 wt% based on the total resin composition. The method of claim 15, wherein the inorganic filler is at least one selected from the group consisting of silica, talc and alumina. The method of claim 16, wherein the inorganic filler is spherical and non-porous. The method of claim 16, wherein the silica is fused silica, synthetic silica, amorphous silica, glass ceramic, soda glass, lithium borosilicate glass, barium glass, strontium glass, zinc glass, borosilicate glass, crystal quartz (crystal) quartz), or a method of manufacturing a dental implant placement guide, characterized in that a combination thereof. 13. The method of claim 12, wherein the photoinitiator has the ability to generate free radicals when exposed to ultraviolet or visible light. The method of claim 19, wherein the content of the photoinitiator is adjusted in the range of 0.2 to 2% by weight based on the total resin composition. The method of claim 19, wherein the photoinitiator is at least one selected from the group consisting of (bis)acylphosphine oxide and Camphorquinone. The method of claim 21, wherein the (bis) acylphosphine oxide is 2.4.6-trimethyl benzoyl-diphenylphosphine oxide (TPO), 2,6-dimethyoxy benzoyl-diphenylphosphine oxide, 2,6-dichloro benzoyl-diphenylphosphine oxide, 2.4. 6-trimethyl benzoyl-methoxyphenylphosphine oxide, 2.4.6-trimethyl benzoyl-ethoxyphenylphosphine oxide, 2,3,5,6-tetramethyl benzoyl-diphenylphosphine oxide, benzoyl di-(2,6-dimethylphenyl)phosphonate, bis-(2,6 -dichloro benzoyl)phenylphosphine oxide, bis-(2,6-dichloro benzoyl)-2,5-dimethylphenylphosphine oxide, bis-(2,6-dichloro benzoyl)-4-prophylphenylphosphine oxide, bis-(2,6-dichloro benzoyl )-1-naphthylphosphine oxide, bis-(2,6-dimethoxy benzoyl)-2,4,4-trimethylpentylphosphine oxide, bis-(2,6-dimethoxy benzoyl)-2,5-dimethylphenylphosphine oxide, bis-(2, 4,6-trimethyl benzoyl)phenylphosphine oxide, and (2.5,6-trimethyl benzoyl)-2,4,4-trimethylpentylphosphine oxide at least one selected from the group consisting of a method of manufacturing a dental implant placement guide, characterized in that it is selected. The method of claim 12, wherein the photoreducing agent is Ethyl-4-dimethylamino-benzoate (EDMAB), 2,4-(dimethylamino)phenyl ethanol, 4-(dimethylamino)ethyl methacrylate, N,N-dimethyl-p-Toluidine and N , A method of manufacturing a dental implant placement guide, characterized in that at least one selected from the group consisting of N-dimethyl aniline. The method of claim 23, wherein the content of the light reducing agent is adjusted in the range of 0.1 to 1.5 wt%. According to claim 1, wherein in the first step, the impression resin contained in the preliminary guide is formed with a bone matched with the implantation site, and the formed bone is a physical matching means between the implantation site and the finally completed guide. Method of manufacturing a dental implant placement guide, characterized in that used. The method according to claim 2, wherein a bone is formed at the implantation site in the impression resin contained in the preliminary guide through the first to third steps, and the formed pattern is the physical structure of the implantation site and the finally completed guide. Method of manufacturing a dental implant placement guide, characterized in that used as a matching means. According to claim 1, wherein in the second step, the CT image is retrieved from the design program and the implantation information including the type and size of the implant, the placement position, the placement depth and/or the placement angle is designed in consideration of the occlusal relationship. Method of manufacturing a dental implant placement guide, characterized in that. The method according to claim 2, wherein the CT image is retrieved from the design program in the fifth step and the implant type and size, placement position, placement depth, and/or placement information of implantation angle are designed in consideration of the occlusal relationship. A method of manufacturing a dental implant placement guide. The method according to claim 1, wherein the preliminary guide image matching the preliminary guide held by the patient in the first step is selected on the design program in the third step. The method of claim 2, wherein a preliminary guide image matching the preliminary guide held by the patient in the first step is selected on the design program in the sixth step. The digital information for processing according to claim 29 or 30, wherein the preliminary guide image is placed on the CT image for which the implantation information is designed, and then a guide hole is designed in the preliminary guide image to match the implantation information. Method of manufacturing a dental implant placement guide, characterized in that for generating. The method of claim 31, wherein the guide is completed by machining a guide hole in the preliminary guide according to the digital information. [Claim 3] The method of claim 2, wherein, after placing the preliminary guide on the implantation site during the first step, the patient closes his/her mouth and bites the preliminary guide. The preparation of a dental implant placement guide according to claim 2, wherein halogen or LED light having a wavelength of 400 to 500 nm and an intensity of 800 to 1,000 mW/cm 2 is used for partial curing in the second step. Way. The method of claim 34, wherein the light is irradiated while slowly moving from the side surface to the upper surface of the preliminary guide for 30 to 60 seconds. The dental implant placement guide of claim 2, wherein halogen or LED light having a wavelength of 400 to 500 nm and an intensity of 800 to 1,000 mW/cm 2 is used for complete curing in the third step. manufacturing method. The method of claim 36, wherein the light is irradiated while moving slowly to the upper surface, the side surface, and the lower surface of the preliminary guide for 40 to 80 seconds. Impression resin for forming a pattern of the implant site; and
a guide tray having an impression resin accommodating part in which the impression resin is accommodated and a jig fastening part fastened to a processing jig installed in the processing equipment when an implantation guide hole is processed to complete the guide;
includes,
The impression resin is a photo-curable resin composition, and includes a (meth)acrylic monomer (or oligomer) as a resin matrix component thereof, and a (meth)acrylic monomer (or oligomer) having two or more functional groups, and
A preliminary guide that exists in a semi-solid state with a viscosity of 500 ps or less when measured by a cone/plate viscometer at 50°C. The method according to claim 38, wherein the guide tray further comprises a protective cover for preventing the impression resin from sticking to the jig fastening part by pushing out a portion of the impression resin by pressing when a bone of the implant site is formed in the impression resin. A preliminary guide, characterized in that it includes. The preliminary guide according to claim 39, wherein one side of the extension part is slightly raised to the protective cover part, and is configured to prevent the impression resin from being pushed out toward the protective cover part. 39. The preliminary guide according to claim 38, wherein the guide tray further comprises a gripping portion that is selectively broken according to use. 42. The method according to any one of claims 38 to 41, wherein the impression resin, after light curing, has a compressive strength of at least 250 MPa as measured according to ISO 604 and a flexural strength of at least 90 MPa as measured according to ISO 178. A preliminary guide, characterized in that it is a curable resin having. 42. The preguide according to any one of claims 38 to 41, wherein the impression resin after light curing exhibits a hardness of at least 75 as measured by ASTM D2240. The preliminary guide according to any one of claims 38 to 41, wherein the impression resin has a polymerization shrinkage rate of 2.3% or less during light curing. The preliminary guide according to any one of claims 38 to 41, wherein the impression resin is maintained at a maximum of 45°C during light curing. 42. The method according to any one of claims 38 to 41, wherein when the resin matrix component is in the form of a monomer, the molecular weight (M _w ) is in the range of 150 to 500, and when the resin matrix component is in the form of an oligomer, the molecular weight (M) _w ) is a preliminary guide, characterized in that in the range of 550 to 3000. 47. The method of claim 46, wherein the resin matrix component comprises: (i) urethane di(meth)acrylate, (ii) bifunctional bisphenol-A di(meth)acrylate, and (iii) polyfunctional (meth)acrylate A preliminary guide, characterized in that it contains, and the equivalent of (meth)acrylate in the total light-curable resin composition is adjusted to be in the range of 0.02 to 0.2 equivalent. The preliminary guide according to claim 47, wherein the resin matrix component further comprises up to 10 wt% of epoxy (meth)acrylate, and/or urethane (meth)acrylate, based on the total resin composition. The preliminary guide according to claim 38, wherein the photo-curable resin composition comprises at least one component selected from the group consisting of an inorganic filler, a photoinitiator, a photoreducing agent, and a stabilizer. The method according to claim 47, wherein, based on the resin composition, the content of the urethane di(meth)acrylate is 20 to 50% by weight, and the content of the difunctional bisphenol-A di(meth)acrylate is 10 to 30% by weight. , and the content of the polyfunctional (meth) acrylate is a preliminary guide, characterized in that each controlled in the range of 2 to 15% by weight. 48. The ethoxylated bisphenol-A di(meth)acrylate and bisphenol-A glycol dimethacrylate according to claim 47, wherein the difunctional bisphenol-A di(meth)acrylate has an ethoxy mole number of from 2 to 10. (bis-GMA) is at least one selected from the group consisting of, and
The polyfunctional (meth)acrylate is ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, dimethanol dimethacrylate, 1,6-hexanediol dimethacrylate, A preliminary guide, characterized in that at least one selected from the group consisting of 1,9-nonanediol dimethacrylate, ethoxylated trimethylol propane trimethacrylate and trimethylolpropane trimethacrylate. 50. The preliminary guide according to claim 49, wherein the size of the inorganic filler is in the range of 5 to 150 μm, and the content thereof is adjusted in the range of 20 to 50 wt% based on the total resin composition. 53. The preliminary guide according to claim 52, wherein the inorganic filler is at least one selected from the group consisting of silica, talc and alumina. 55. The method of claim 53, wherein the silica is fused silica, synthetic silica, amorphous silica, glass ceramic, soda glass, lithium borosilicate glass, barium glass, strontium glass, zinc glass, borosilicate glass, crystal quartz (crystal) quartz), or a preliminary guide, characterized in that a combination thereof. 50. The preguide according to claim 49, wherein the photoinitiator has the ability to generate free-radicals when exposed to ultraviolet or visible light. The preliminary guide according to claim 55, wherein the content of the photoinitiator is adjusted in the range of 0.2 to 2 wt% based on the total resin composition. 56. The preliminary guide according to claim 55, wherein the photoinitiator is at least one selected from the group consisting of (bis)acylphosphine oxide and Camphorquinone. 58. The method of claim 57, wherein the (bis)acylphosphine oxide is 2.4.6-trimethyl benzoyl-diphenylphosphine oxide (TPO), 2,6-dimethyoxy benzoyl-diphenylphosphine oxide, 2,6-dichloro benzoyl-diphenylphosphine oxide, 2.4. 6-trimethyl benzoyl-methoxyphenylphosphine oxide, 2.4.6-trimethyl benzoyl-ethoxyphenylphosphine oxide, 2,3,5,6-tetramethyl benzoyl-diphenylphosphine oxide, benzoyl di-(2,6-dimethylphenyl)phosphonate, bis-(2,6 -dichloro benzoyl)phenylphosphine oxide, bis-(2,6-dichloro benzoyl)-2,5-dimethylphenylphosphine oxide, bis-(2,6-dichloro benzoyl)-4-prophylphenylphosphine oxide, bis-(2,6-dichloro benzoyl )-1-naphthylphosphine oxide, bis-(2,6-dimethoxy benzoyl)-2,4,4-trimethylpentylphosphine oxide, bis-(2,6-dimethoxy benzoyl)-2,5-dimethylphenylphosphine oxide, bis-(2, A preliminary guide, characterized in that at least one selected from the group consisting of 4,6-trimethyl benzoyl)phenylphosphine oxide, and (2.5,6-trimethyl benzoyl)-2,4,4-trimethylpentylphosphine oxide. 50. The method of claim 49, wherein the photoreducing agent is Ethyl-4-dimethylamino-benzoate (EDMAB), 2,4-(dimethylamino)phenyl ethanol, 4-(dimethylamino)ethyl methacrylate, N,N-dimethyl-p-Toluidine and N , A preliminary guide, characterized in that at least one selected from the group consisting of N-dimethyl aniline. 60. The preliminary guide according to claim 59, wherein the content of the photoreducing agent is controlled in the range of 0.1 to 1.5 wt%. The preliminary guide according to any one of claims 38 to 41, wherein the impression resin has an exposed surface covered with a thin film. 62. A preguide according to claim 61, characterized in that the membrane is made of a transparent or translucent vinyl. 62. The preguide according to claim 61, wherein the film has a thickness of 0.03 to 0.20 mm. The method according to any one of claims 38 to 41, wherein the impression resin receiving part has a shape corresponding to the maxillary anterior/premolar region or the mandibular anterior/premolar region, from the maxillary central incisor to the second molar region or from the mandibular central incisor to the second molar. A preliminary guide, characterized in that it has a shape corresponding to the region, a shape corresponding to the maxillary premolar/molar region or the lower premolar/molar region, or a shape corresponding to the second molar region from the maxillary central incisor and the second molar region from the mandibular central incisor. . The method of claim 38, wherein the impression resin receiving portion is the impression resin is connected to the first side that is located inside the tooth, the bottom surface that is located at the end of the tooth, and the second side that is located on the outside of the tooth is accommodated. A preliminary guide, characterized in that it has a space to be. The preliminary guide according to claim 38, wherein the impression resin accommodating part is made of a polysulfone material. 66. The preliminary guide according to claim 65, wherein the first side surface is formed to be inclined to fit the structure of the inside of the tooth. 66. The preliminary guide according to claim 65, wherein the first side has a plurality of first grooves/holes to which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 69. The preliminary guide according to claim 68, wherein the plurality of first grooves/holes have an angled shape, and the width of the inlet is narrower than the width of the outlet. The preliminary guide according to claim 65, wherein a plurality of matching markers are provided on the bottom surface of the bottom surface on which the impression resin is filled. Impression resin accommodating part which accommodates the impression resin, and has a shape corresponding to the anterior or premolar region of the maxilla or mandible; and
Including a jig fastening part coupled to a jig for processing for processing of an implantation guide hole,
The impression resin receiving portion has a first side located on the inside of the tooth, a bottom surface located on the end of the tooth, and a second side surface located on the outside of the tooth,
The second side is supported in contact with the jig for processing, the guide tray characterized in that it comprises a protruding jaw or a concave groove to catch the vibration during mechanical drilling of the implantation guide hole. Impression resin accommodating part which accommodates the impression resin, and has a shape corresponding to the anterior or premolar region of the maxilla or mandible;
A jig fastening unit coupled to a jig for processing for processing of an implantation guide hole; and
The guide tray is formed to be detachably attached to the jig fastening part, and comprises a protective cover part for preventing the impression resin from sticking to the jig fastening part when the implantation part is pressed and modeled by the impression resin. 73. The guide tray according to claim 71 or 72, wherein the impression resin accommodating part uses polysulfone as its material. 73. The guide tray according to claim 71, wherein the first side surface is inclined to fit the structure of the inner tooth. 73. The guide tray of claim 71, wherein the first side has a plurality of grooves or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 76. The guide tray according to claim 75, wherein the plurality of grooves or holes have an angled shape, and the width of the inlet is narrower than the width of the outlet. 73. The guide tray according to claim 71 or 72, wherein the bottom surface is provided with a plurality of matching markers on the opposite surface where the impression resin is filled. 78. The guide tray according to claim 77, wherein the plurality of matching markers are completely embedded in the groove formed on the bottom surface without exposing the surface. 78. The guide tray according to claim 77, wherein the plurality of registration markers are used for registration, "putting a preliminary guide image matching the preliminary guide held by the patient on the CT image for which the placement information is designed". . 78. The guide tray of claim 77, wherein the plurality of registration markers are made of a material that is radiopaque. 78. The guide tray of claim 77, wherein the plurality of registration markers are made of a radiopaque metal or ceramic material. 78. The guide tray of claim 77, wherein said plurality of registration markers are made of "Gutta Percha", a dental material. 78. The guide tray of claim 77, wherein the plurality of registration markers have a diameter of 0.3 to 5.0 mm. 78. The guide tray of claim 77, wherein the plurality of registration markers have a spherical shape or a cylindrical shape. 78. The guide tray according to claim 77, wherein three or more of the plurality of matching markers are aligned at a distance to increase the accuracy of matching, and the alignment position forms a triangle when any three markers are connected. . 73. The method of claim 71 or 72, wherein at least one of the impression resin accommodating part and the jig fastening part is a material coated with a radiopaque material on its surface as a matching means, or a material having radiopaque properties itself. Guide tray, characterized in that made of. 72. The guide tray of claim 71, wherein the second side is formed substantially perpendicular to the structure of the outer tooth. 88. The guide tray of claim 87, wherein the second side is provided with a plurality of grooves or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 89. The guide tray according to claim 88, wherein the plurality of grooves or holes have an angled shape, and the width of the inlet is narrower than the width of the outlet. 73. The guide tray according to claim 72, wherein one side of the extension part is slightly raised to prevent the impression resin from being pushed out toward the protective cover part when the protective cover part is cut. 73. The method according to claim 71 or 72, further comprising a gripping portion extending from the impression resin receiving portion on the opposite side of the jig fastening portion and being selectively broken according to use and removable from the impression resin receiving portion. guide tray with Impression resin accommodating part receiving the impression resin, and having a shape corresponding to the upper or lower central incisors to second molars; and
Includes; a jig fastening unit coupled to a jig for processing for processing of an implantation guide hole;
The impression resin receiving portion has a first side located on the inside of the tooth, a bottom surface located on the end of the tooth, and a second side surface located on the outside of the tooth,
The bottom surface is a guide tray, characterized in that the opening is formed in the portion where the molars are located. 93. The guide tray according to claim 92, wherein the impression resin accommodating part uses polysulfone as a material thereof. 93. The guide tray of claim 92, wherein the first side surface is inclined to fit the structure of the inner tooth. 93. The guide tray of claim 92, wherein the first side is provided with a plurality of grooves or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 96. The guide tray according to claim 95, wherein the plurality of grooves or holes have an angled shape, and the width of the inlet is narrower than the width of the outlet. 93. The guide tray according to claim 92, wherein the opening is provided with a thin protective film connected to the bottom surface to prevent the impression resin from being pushed out. 93. The guide tray according to claim 92, wherein a plurality of matching markers are provided on the bottom surface of the bottom surface on which the impression resin is filled. The guide tray according to claim 98, wherein the plurality of matching markers are completely embedded in the groove formed on the bottom surface without exposing the surface. The guide tray according to claim 98, wherein the plurality of registration markers are used for registration operation, "putting a preliminary guide image matching the preliminary guide held by the patient on the CT image for which the placement information is designed". . 99. The guide tray of claim 98, wherein the plurality of registration markers are made of a material that is radiopaque. 99. The guide tray of claim 98, wherein the plurality of registration markers are made of a radiopaque metal or ceramic material. 99. The guide tray of claim 98, wherein said plurality of registration markers are made of "Gutta Percha", a dental material. 99. The guide tray of claim 98, wherein the plurality of registration markers have a diameter of 0.3 to 5.0 mm. 99. The guide tray of claim 98, wherein the plurality of registration markers have a spherical or cylindrical shape. The guide tray according to claim 98, wherein three or more of the plurality of matching markers are aligned at a distance to increase the accuracy of matching, and the alignment position forms a triangle when any three markers are connected. . 93. The method of claim 92, wherein at least one of the impression resin accommodating part and the jig fastening part is made of a material having a radiopaque material or coated with a radiopaque material on its surface as a matching means. Features a guide tray. 93. The guide tray of claim 92, wherein the second side is formed substantially perpendicular to the structure of the outer tooth. 109. The guide tray according to claim 108, wherein the second side is provided with a plurality of holes or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 93. The guide tray according to claim 92, wherein the second side surface is supported in contact with the jig for processing and includes a protruding jaw or a concave groove to catch vibrations during mechanical drilling of the implantation guide hole. 93. The method of claim 92, wherein the jig fastening portion is formed detachably, the impression resin when the implantation portion is pressed and modeled by the impression resin comprising a protective cover to prevent from sticking to the jig fastening portion. guide tray. 112. The guide tray according to claim 111, wherein one side of the extension part is slightly raised to prevent the impression resin from being pushed out toward the protective cover part when the protective cover part is cut. 112. The guide tray according to claim 111, wherein the protective cover part has a plurality of protrusions fitted into grooves or holes on the first side surface. 93. The guide tray according to claim 92, further comprising a gripper extending from the impression resin accommodating part on the opposite side of the jig fastening part, and being selectively broken according to use and removable from the impression resin accommodating part. . Impression resin receiving part having a shape corresponding to the upper or lower premolars or molars in which the impression resin is accommodated; and
Includes; a jig fastening unit coupled to a jig for processing for processing of an implantation guide hole;
The impression resin receiving portion has a first side located on the inside of the tooth, a bottom surface located on the end of the tooth, and a second side surface located on the outside of the tooth,
The bottom surface is a guide tray, characterized in that the opening is formed in the portion where the molars are located. 116. The guide tray according to claim 115, wherein the impression resin accommodating part uses polysulfone as a material thereof. 116. The guide tray according to claim 115, wherein the first side surface is inclined to fit the structure of the inner tooth. 116. The guide tray of claim 115, wherein the first side is provided with a plurality of grooves or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 119. The guide tray of claim 118, wherein the plurality of grooves or holes have an angled shape, and the width of the inlet is narrower than the width of the outlet. 116. The guide tray of claim 115, wherein the opening is provided with a thin protective film connected to the bottom surface to prevent the impression resin from being pushed out. 116. The guide tray of claim 115, wherein a plurality of matching markers are provided on the bottom surface of the bottom surface on which the impression resin is filled. 122. The guide tray according to claim 121, wherein the plurality of matching markers are completely embedded in the groove formed on the bottom surface without exposing the surface. 123. The guide tray according to claim 121, wherein the plurality of registration markers are used for registration, "putting a preliminary guide image matching the preliminary guide held by the patient on the CT image for which the implantation information is designed". . 122. The guide tray of claim 121, wherein the plurality of registration markers are made of a radiopaque material. 122. The guide tray of claim 121, wherein the plurality of registration markers are made of a metal or ceramic material having a radiopaque effect. 122. The guide tray of claim 121, wherein said plurality of registration markers are made of "Gutta Percha", a dental material. 123. The guide tray of claim 121, wherein the plurality of registration markers have a diameter of 0.3 to 5.0 mm. 122. The guide tray according to claim 121, wherein the plurality of registration markers have a spherical shape or a cylindrical shape. 122. The guide tray of claim 121, wherein three or more of the plurality of matching markers are aligned at a distance to increase the accuracy of matching, and the alignment position forms a triangle when any three markers are connected. . 116. The method according to claim 115, wherein at least one of the impression resin receiving part and the jig fastening part is made of a radiopaque material, or a radioactive material is applied to its surface as a matching means, or is itself made of a radiopaque material. Features a guide tray. 116. The guide tray of claim 115, wherein the second side is formed substantially vertically to conform to the structure of the outer tooth. 134. The guide tray of claim 131, wherein the second side is provided with a plurality of grooves or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 116. The guide tray according to claim 115, wherein the second side is supported by the jig for processing and includes a protruding jaw or a concave groove to catch vibrations during mechanical drilling of the implantation guide hole. 116. The method of claim 115, wherein the jig fastening portion is formed to be detachably attached to the impression resin when the implantation site is pressed and modeled by the impression resin comprising a protective cover to prevent the sticking to the jig fastening portion. guide tray. 135. The guide tray according to claim 134, wherein the protective cover is provided with a plurality of protrusions to be fitted into grooves or holes on the first side surface. 116. The guide tray according to claim 115, further comprising a gripper extending from the impression resin accommodating part on the opposite side of the jig fastening part and being selectively broken according to use and removable from the impression resin accommodating part. . Impression resin accommodating part receiving the impression resin, and having a shape corresponding to the upper or lower saddle-stitched teeth to the second molars; and
Includes; a jig fastening unit coupled to a jig for processing for processing of an implantation guide hole;
The impression resin receiving portion has a first side located on the inside of the tooth, a bottom surface located on the end of the tooth, and a second side surface located on the outside of the tooth,
The bottom surface is a guide tray, characterized in that the opening is formed in the portion where the molars are located. 137. The guide tray according to claim 137, wherein the impression resin accommodating part uses polysulfone as a material thereof. 137. The guide tray according to claim 137, wherein the first side surface is inclined to fit the structure of the inside of the tooth. 137. The guide tray of claim 137, wherein the first side is provided with a plurality of grooves or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 141. The guide tray of claim 140, wherein the plurality of grooves or holes have an angled shape, and the width of the inlet is narrower than the width of the outlet. 137. The guide tray according to claim 137, wherein the opening is provided with a thin protective film connected to the bottom surface to prevent the impression resin from being pushed out. 137. The guide tray according to claim 137, wherein a plurality of matching markers are provided on the bottom surface of the bottom surface on which the impression resin is filled. 145. The guide tray of claim 143, wherein the plurality of matching markers are completely embedded in the groove formed on the bottom surface without exposing the surface. 145. The guide tray according to claim 143, wherein the plurality of registration markers are used for registration, "putting a preliminary guide image matching the preliminary guide held by the patient on the CT image for which the implantation information is designed". . 145. The guide tray of claim 143, wherein the plurality of registration markers are made of a radiopaque material. 145. The guide tray of claim 143, wherein the plurality of registration markers are made of a radiopaque metal or ceramic material. 145. The guide tray of claim 143, wherein said plurality of registration markers are made of "Gutta Percha", a dental material. 145. The guide tray of claim 143, wherein the plurality of registration markers have a diameter of 0.3 to 5.0 mm. 145. The guide tray of claim 143, wherein the plurality of registration markers have a spherical or cylindrical shape. 145. The guide tray according to claim 143, wherein three or more of the plurality of matching markers are aligned at a distance to increase the accuracy of matching, and the alignment position forms a triangle when any three markers are connected. . 137. The method of claim 137, wherein at least one of the impression resin receiving part and the jig fastening part is made of a material having radiopacity on its surface as a matching means, or made of a material having radiopacity itself. Guide tray, characterized in that it loses. 137. The guide tray of claim 137, wherein the second side is formed substantially perpendicular to the structure of the outer tooth. 154. The guide tray of claim 153, wherein the second side is provided with a plurality of grooves or holes through which the impression resin is firmly fixed when the impression resin is pushed in and hardened. 155. The guide tray of claim 154, wherein the plurality of second grooves or holes have an angled shape, and the width of the inlet is narrower than the width of the outlet. 137. The guide tray according to claim 137, wherein the second side surface is supported in contact with the processing jig and includes a protruding jaw or a concave groove to catch vibrations during mechanical drilling of the implantation guide hole. 137. The method of claim 137, wherein the jig fastening portion is formed detachably, and the impression resin when the implantation site is pressed and modeled by the impression resin comprising a protective cover for preventing the sticking to the jig fastening portion. guide tray. 158. The guide tray according to claim 157, wherein the protective cover portion is formed with a plurality of protrusions fitted into grooves or holes on the first side surface. 137. The guide tray according to claim 137, further comprising a gripper extending from the impression resin accommodating part on the opposite side of the jig fastening part and being selectively broken according to use and removable from the impression resin accommodating part. .

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