KR20220073400A - implanting method for dental restoration implant and bone reduction guide applied to thereof - Google Patents

Abstract

In order to improve the precision of dental restoration, the present invention provides a cutting guide in which the CT image of the target arch and the scanning image of the opposing arch are aligned and matched in correspondence to the vertical height, and the upper and lower parts are spaced apart but partially connected to the cutting plane preset in the CT image of the target arch In the first step of obtaining design information of the target arch, the CT image of the target arch, the scanning image of the opposing arch, and the design information of the cutting guide are 3D printed to produce the impression model of the target side, the impression model of the opposing side, and the actual cutting guide ; The target-side impression model and the opposing-side impression model are arranged occlusally corresponding to the vertical height, and a curable impression resin is applied to fill the space between the cutting guide temporarily mounted on the target-side impression model and the opposing-side impression model. a second step of forming an alignment jig part integrally attached to the upper part of the cutting guide, which is injected and hardened to form a mating groove on the outer surface of which the end of the opposing-side impression model is mated; The cutting guide formed integrally with the alignment jig part is interlocked in the oral cavity, and the inner surface of the cutting guide and the mating groove are fitted to the end of the target arch and the opposing arch, and the anchor pin penetrates the lower side of the aligned cutting guide. a third step of being fixed to the alveolar bone; and the upper part of the alveolar bone is cut along the cutting guide rim exposed to the outside by separating and removing the alignment jig part and the upper part of the cutting guide at the same time to place the dental restoration implant at a position corresponding to the preset height. It provides a method of implanting an implant for dental restoration comprising a fourth step of forming a cutting surface.

Description

Implanting method for dental restoration implant and bone reduction guide applied to it, and a cutting guide applied thereto

The present invention relates to a method for placing an implant for a dental restoration and a cutting guide applied thereto, and more particularly, to a method for placing an implant for a dental restoration with improved dental restoration precision, and a cutting guide applied thereto.

In general, a prosthesis (dental prosthesis) is an artificial periodontal tissue in the oral cavity that artificially restores appearance and function by replacing missing natural teeth. That is, the prosthesis can be installed inside the oral cavity to restore the masticatory function and prevent the deformation of periodontal tissue, and can be divided into partial prosthesis or complete prosthesis according to the number of missing teeth.

Such a prosthesis may be installed in the oral cavity through a fixture placed in the alveolar bone. Therefore, since the conventionally used dentures fixed with an adhesive are supported in direct contact with the gums, it is possible to solve the problems of causing deformation of the gums or a feeling of a large amount of foreign matter, so that the amount of dentures used for replacing dentures is increasing.

On the other hand, for edentulous patients, patients with few remaining teeth or with poor placement of the remaining teeth, dental restoration to replace the entire tooth, such as a complete prosthesis, proceeds. deletion is required. For example, when there is insufficient space for mounting a dental restoration between the upper and lower jaw, or when it is difficult to stably place an implant such as a fixture because the upper width of the alveolar bone is narrow, or when smiling, the boundary between the dental restoration and the gum is not exposed This bone preparation may be required to avoid this.

As such, the design of the dental restoration can be simplified and simplified by flattening the curves formed after the collapse of the alveolar bone or the extraction of the remaining teeth, and the degree of matching with the oral cavity can be improved when the dental restoration is installed. To this end, a cutting guide for guiding the bone preparation for flattening the upper end of the alveolar bone is prepared.

In this case, when at least one remaining tooth is partially edentulous, the position of the cutting guide may be aligned through the remaining teeth. That is, when a mating groove into which the remaining teeth are fitted is set in the cutting guide, the position of the cutting guide is precisely restrained through the shaping between the remaining teeth and the mating groove. Accordingly, bone preparation is performed in response to a predetermined dental restoration plan, and subsequent implant placement and dental restoration fixation can be precisely performed.

However, in the case of edentulous jaws in which all natural teeth have been lost, it is difficult to accurately align the fixed position of the cutting guide, and furthermore, if the fixed position of the cutting guide is deviated by vibration generated during drilling, the precision of the subsequent tooth restoration process is lowered. there was

Moreover, a configuration in which an alignment means for guiding alignment in order to fix the cutting guide at an accurate position in the oral cavity is manufactured separately from the cutting guide has been partially disclosed. These alignment means were formed in a structure of protrusions and grooves that are matched with each other along a surface or edge opposite to the cutting guide. However, a coupling error between the protrusion and the groove occurs due to shrinkage when the cutting guide and the alignment means are separately 3D printed, and even when the coupling error occurs slightly, there is a problem in that they cannot be matched with each other. For this reason, there is a problem in that the alignment means is not properly coupled with the cutting guide and cannot guide the cutting guide to an accurate position in the oral cavity.

Korean Patent Registration No. 10-0977911

In order to solve the above problems, an object of the present invention is to provide a method for placing an implant for dental restoration in which the precision of dental restoration is improved, and a cutting guide applied thereto.

In order to solve the above problems, the present invention provides a cutting in which the CT image of the target arch and the scanning image of the opposite arch are aligned and matched in correspondence with the vertical height, and the upper and lower parts are spaced apart but partially connected in response to the cutting plane preset in the CT image of the target arch The first design information of the guide is obtained, and the target-side impression model, the opposite-side impression model, and the actual cutting guide are manufactured by 3D printing the target arch CT image, the opposing arch scanning image, and the design information of the cutting guide step; The target-side impression model and the opposing-side impression model are arranged occlusally corresponding to the vertical height, and a curable impression resin is applied to fill the space between the cutting guide temporarily mounted on the target-side impression model and the opposing-side impression model. a second step of forming an alignment jig part integrally attached to the upper part of the cutting guide, which is injected and hardened to form a mating groove on the outer surface of which the end of the opposing-side impression model is mated; The cutting guide formed integrally with the alignment jig part is interlocked in the oral cavity, and the inner surface of the cutting guide and the mating groove are fitted to the end of the target arch and the opposing arch, and the anchor pin penetrates the lower side of the aligned cutting guide. a third step of being fixed to the alveolar bone; and the upper end of the alveolar bone is cut while the cutting tool is moved along the cutting guide rim exposed to the outside by separating and removing the alignment jig part and the upper part of the cutting guide at the same time to place the dental restoration implant corresponding to a preset height It provides an implantation method of a dental restoration implant comprising a fourth step of forming a cutting surface for implantation in a position.

On the other hand, in the present invention, based on the CT image of the target arch, the inner surface is formed to match the surface of the alveolar bone of the target arch. a cutting body in which a piece fastening portion to be formed protrudes outward; A lower edge is formed to correspond to a division plane spaced apart from the cutting plane so that the cutting body is spaced apart from the upper side of the cutting body to correspond to a preset cutting space, and an inner surface is formed based on the CT image of the target arch, the cutting body is the an alignment body portion formed integrally with an alignment jig portion formed with a mating groove to which an opposing end is formed so as to be aligned and fixed in the target arch; And the cutting body and the alignment body are spaced apart to correspond to the cutting space and are integrally formed so as to be selectively divided so that each end is a plurality of gap support bridges connecting the labial outer surface of the cutting body and the labial outer surface of the alignment body It provides a cutting guide applied to the implantation method of the implant for dental restoration comprising a.

Through the above solutions, the present invention provides the following effects.

First, the cutting body and the alignment body are spaced apart so that each inner surface corresponds to the outer surface of the alveolar bone through the gap support bridge, but since it is later divided, it is accurately By fundamentally solving the conventional problems that cannot be matched, the convenience of installation can be significantly improved.

Second, if you bite the cutting guide, which is integrally attached with the alignment jig to support between the alignment body and the opposing teeth, the position of the cutting guide in the oral cavity is precisely aligned, and when drilling the anchor pin with it open, the masticating pressure is reduced. This prevents the movement of the cutting guide due to vibration, so it can be fixed in the correct position.

Third, since the impression resin cured by the alignment jig part is laminated and attached to the alignment body part that is substantially separated from the cutting guide, the impression resin is adhered to the part that directly guides the cutting of the alveolar bone and implant placement. Since it is fundamentally prevented, implantation accuracy and precision can be significantly improved.

Fourth, as the gap support bridge that integrally connects the cutting body and the alignment body is connected protrudingly from the labial outer surface of each body, it prevents damage and deformation of the cutting guide frame due to the driving of the mechanism for separating the upper and lower parts of the cutting guide. Cutting precision can be significantly improved.

Fifth, since the surgical guide is fitted to the cutting guide fixed in the oral cavity, the precision is improved by preventing the position change when the surgical guide is installed after separating the cutting guide, and the healing period can be significantly shortened by preventing excessive damage to the alveolar bone. can

1 is a flow chart showing a method of placing an implant for dental restoration according to an embodiment of the present invention.
Figure 2 is an exemplary view showing a three-dimensional planning image applied to the implantation method of the dental restoration according to an embodiment of the present invention.
Figure 3 is an exemplary view showing a process of acquiring design information of the cutting guide in the implantation method for a dental restoration according to an embodiment of the present invention.
Figure 4 is a cross-sectional view showing the formation process of the alignment jig in the implantation method for a dental restoration according to an embodiment of the present invention.
5a and 5b are cross-sectional views showing the fixing process of the cutting guide in the oral cavity in the implantation method for a dental restoration according to an embodiment of the present invention.
6 is a projection diagram showing a coupling relationship between a surgical guide and a cutting guide manufactured according to an embodiment of the present invention.
7 is an exemplary view viewed from the top of the coupling relationship between the surgical guide and the cutting guide manufactured according to an embodiment of the present invention.
8 is an exemplary view showing a process of obtaining three-dimensional alveolar bone information in the implantation method of a dental restoration implant according to an embodiment of the present invention.

Hereinafter, a method for placing an implant for dental restoration according to a preferred embodiment of the present invention and a cutting guide applied thereto will be described in detail with reference to the accompanying drawings.

At this time, in the present invention, it is preferable to understand that the dental restoration implant is a fixture to be placed in the alveolar bone. The fixture is for fixing the dental restoration to the alveolar bone, and the dental restoration is to replace at least one or more missing teeth, and it is preferable to understand that it encompasses a crown, a bridge, or a complete prosthesis. In particular, it is preferable to understand that the present invention is applied to a complete prosthesis supported by the fixture installed in a plurality of spaced apart along the dental arch.

1 is a flowchart illustrating a method for placing a dental restoration implant according to an embodiment of the present invention, and FIG. 2 is a three-dimensional planning image applied to the implantation method for a dental restoration according to an embodiment of the present invention. It is an exemplary view, and FIG. 3 is an exemplary view showing a process of acquiring design information of a cutting guide in the method for placing an implant for dental restoration according to an embodiment of the present invention.

1 to 3, the implantation method of the dental restoration implant according to the present invention includes manufacturing a target-side impression model, an opposing-side impression model, and a cutting guide (710), and forming an alignment jig attached to the top of the cutting guide (720). ), the target arch includes a series of steps such as aligning and fixing the cutting guide to the alveolar bone (730), upper separation of the cutting guide, and cutting the alveolar bone (740).

On the other hand, the target arch to be described below is preferably understood as a jaw that requires dental restoration, and in the present invention, the upper jaw, which is an edentulous jaw, will be described and illustrated as an example. In addition, it is preferable to understand that the anti-jaw arch is the jaw that occludes the target arch, and in the present invention, the mandible, which is a dentulous jaw, will be described and illustrated as an example. Of course, the implantation method of the dental restoration of the present invention is applicable even when the mandible is edentulous or both the upper and lower jaws are edentulous.

In detail, referring to FIG. 2 , a three-dimensional planning image m1 for establishing an overall plan for dental restoration is generated through the planning unit. In this case, the three-dimensional planning image m1 is preferably generated based on image information acquired using a scanner or a CT imaging device and image information pre-stored in a digital library, which is a data storage connected to the planning unit through wired/wireless communication.

In detail, the three-dimensional planning image (m1) includes a target arch CT image (m4) and an opposing arch scanning image (m3), and the target arch CT image (m4) and the opposing arch scanning image (m3) are the patient's It is preferable to be aligned and matched to correspond to a vertical dimension. In this case, the target arch scanning image and the antagonistic arch CT image may be further included so that the target arch CT image (m4) and the antagonistic arch scanning image (m3) are aligned and matched to correspond to the desired vertical height (VD).

Here, the CT image of the target arch (m4) and the CT image of the opposing arch are preferably obtained by CT imaging of the upper and lower jaws in which the upper and lower jaws are occluded corresponding to the vertical height (VD). In addition, the target maxilla scanning image and the opposing arch scanning image m3 may be overlapped and matched based on a common part of the target maxillary CT image m4 and the antagonistic CT image photographed in an occlusal state.

At this time, it is preferable that the implantation information (A) of the fixture is set in consideration of the height of the dental restoration, masticatory pressure, alveolar bone density, and dangerous anatomical structures (such as nerves). In addition, it is preferable that the cutting information of the alveolar bone is set in consideration of the height and the vertical diameter of the dental restoration. Preferably, the cutting information is set as a cutting plane L1 that crosses the CT image m4 of the target arch, and is spaced apart from the occlusal plane op of the upper and lower jaws by a preset interval. In addition, it is preferable that anchor pin information (D), which is an implantation position of an anchor pin for fixing the cutting guide 10 to the oral cavity, is set together in the three-dimensional planning image (m1). In addition, although not shown in the drawings, design information of the dental restoration may be further generated based on the three-dimensional planning image m1.

Meanwhile, referring to FIG. 3 , it is preferable that design information m10 of the cutting guide is obtained based on the three-dimensional planning image m1. At this time, the cutting guide (10 in FIG. 4) is formed to include a cutting body (11 in FIG. 4) and an alignment body (12 in FIG. 4). Hereinafter, the design information m11 of the cutting body and the A process in which the design information m10 of the cutting guide in which the design information m12 of the alignment body is divided is obtained will be described.

In detail, it is preferable that the design information m11a of the inner surface of the cutting guide is set based on the three-dimensional external shape information of the alveolar bone included in the target arch CT image m4. Then, the design information for the outer surface of the cutting guide is set by protruding or offset from the design information m11a on the inner surface of the cutting guide at a predetermined thickness or interval, and through this, the basis of the cutting guide A virtual body part that is design information may be set virtual.

At this time, the virtual body part is divided into upper and lower parts corresponding to the cutting plane (L1), the virtual divided lower side is set as the design information (m11) of the cutting body part, and the upper side is the design information (m12) of the alignment body part ) can be set.

In detail, it is preferable that the design information m14 for the cutting guide border is set along the upper edge of the virtual divided lower part of the virtual body. In addition, it is preferable that the design information m13 of the piece fastening part through which the anchor pin penetrates is formed on the side of the virtual divided lower part to protrude outward, and is obtained as the design information m11 of the cutting body.

In addition, it is preferable that the dividing plane L2 is set to be spaced apart from the upper side of the cutting plane L1 at a predetermined interval. And, it is preferable that the lower edge is set corresponding to the dividing plane L2 and obtained as the design information m12 of the alignment body part. That is, the design information m11 of the cutting body part and the design information m12 of the alignment body part are set at the same time as design information m11a, m12a for each inner surface based on substantially continuous three-dimensional surface information, The cutting plane L1 and the division plane L2 spaced therefrom may be spaced apart by the interval between them to be mutually divided.

In this case, the distance between the cutting plane L1 and the dividing plane L2 may be set to a distance that does not interfere with the cutting guide rim 14 even if the end of the cutting mechanism is moved.

Here, it is preferable that the design information m15 of the gap support bridge is set to partially connect the design information m11 of the cutting body part and the design information m12 of the alignment body part. It is preferable that the design information (m15) of the gap support bridge is set to be spaced apart from each other in plurality along the facing edge between the design information (m11) of the cutting body part and the design information (m12) of the alignment body part. More preferably, the outer surface side of each body part design information m11 and m12 may be set to be connected so as not to directly overlap with the design information m14 of the cutting guide frame.

As such, in the present invention, the design information m10 of the cutting guide is designed based on three-dimensional image information about the alveolar bone, which is a silk tissue. Accordingly, the cutting guide (10 in FIG. 4 ) manufactured as an actual product may be supported on the outer surface of the actual alveolar bone. Through this, since the position of the cutting guide (10 of FIG. 4 ) is prevented from moving due to vibration when cutting the alveolar bone using a cutting tool such as a dental grinder, the cutting precision of the alveolar bone can be significantly improved.

4 is an exemplary cross-sectional view showing the formation process of the alignment jig in the method for implanting a dental restoration according to an embodiment of the present invention.

4, the target-side impression model (4A), the opposing-side impression model (3A) and the cutting guide 10 of the real are manufactured. And, the target-side impression model (4A) and the opposing-side impression model (3A) are arranged occlusally corresponding to the vertical height (VD). At this time, the cutting guide 10 is temporarily mounted on the target side impression model (4A).

In detail, the target-side impression model 4A is manufactured by sending the target-maxillary CT image m4 to a 3D printer and 3D printing, and the opposing-side impression model 3A is the opposite-maxillary arch scanning image m3. It is transmitted to the 3D printer and is manufactured by 3D printing. And, the cutting guide 10 is 3D printing so that the design information m10 of the cutting guide is transmitted to the 3D printer so that the cutting body 11 is partially connected to the alignment body 12 integrally. to be manufactured

At this time, the cutting guide 10 is directly mounted on the alveolar bone to align the mounting position of the cutting body 11 and the cutting guide 10 that substantially guide the cutting of the alveolar bone. The alignment body is formed The parts 12 are spaced apart from each other and partially connected through the gap support bridge 15 . That is, the cutting body part 11 and the alignment body part 12 are integrally manufactured so that the inner contour of each inner surface is substantially continuously formed corresponding to the outer surface of the alveolar bone through the gap support bridge 15, but optionally It has a split structure.

Therefore, the protrusion/groove cannot be accurately engaged even with a slight shrinkage error during 3D printing due to having the protrusions and grooves that are mutually matched along the opposite edges of the alignment body 12 and the cutting body 11. can be fundamentally eliminated. In addition, since the protrusion or groove is formed on the cutting guide rim 14 and the problem of not accurately guiding the cutting path of the cutting mechanism is solved, cutting precision can be significantly improved.

At this time, the gap support bridge 15 is preferably formed to have a minimum thickness that can stably maintain the cutting space u between the alignment body 12 and the cutting body 11 . Accordingly, when the cutting body 11 and the alignment body 12 are designed to be substantially integrally formed and the gap support bridge 15 is selectively cut, the alignment body 12 is the cutting body 11 ) can be set to be easily separated from In addition, since a cutting space (u) in which the cutting mechanism for cutting the gap support bridge 15 can be moved is formed, scratches or damage due to the cutting mechanism on the cutting guide rim 14 can be prevented in advance. .

On the other hand, the target-side impression model (4A) and the opposing-side impression model (3A) are disposed spaced apart corresponding to the vertical height (VD) through the occlusal device (90). Then, the cutting guide 10 is temporarily mounted on the target-side impression model 4A, and a curable impression resin is injected and cured to fill the space between the cutting guide 10 and the opposing-side impression model 3A. . Through this, the alignment jig portion 17 formed on the outer surface of the mating groove 17a to which the end of the opposing-side impression model 3A is mated is formed on the upper portion of the cutting guide 10, that is, the alignment body portion 12. formed integrally with the

At this time, the alignment jig part 17 is the cutting guide 10 and the opposing side after the target side impression model 4A and the opposing side impression model 3A are spaced apart through the occlusal device 90 . The curable impression resin may be injected to fill the space between the impression models 3A. Alternatively, the curable impression resin is disposed between the cutting guide 10 and the opposing-side impression model 3A, and one side of the curable impression resin is placed on the alignment body by the occlusal pressure applied through the occlusal device 90. It can be deformed under pressure so as to surround the outer surface of the portion 12, and the end of the occlusal impression model is digged into the other side to be deformed under pressure to form the mold groove (17a).

It is preferable that such a curable impression resin is provided with a material that is easy to deform by an external force before hardening, but is not deformed by an external force after hardening. Therefore, after the mold groove (17a) is formed in response to the end of the opposing side impression model (3A) in the curable impression resin, it can be hardened.

At this time, a plurality of fixing protrusions 16 may protrude outside the alignment body 12 to fix the curing and attaching positions of the curable impression resin. To this end, the step of protruding the design information of the fixing protrusion 16 from the outer surface of the design information of the alignment body 12 in the step of acquiring the design information of the cutting guide 10 may be further included. Accordingly, the state in which the alignment jig unit 17 is attached to the outside of the alignment body unit 12 can be firmly maintained, and the front and rear and left and right positions of the alignment jig unit 17 can be stably constrained. have.

As such, in the present invention, the alignment jig portion 17 is formed by curing the curable impression resin and is attached to the alignment body portion 12 that is separated and removed from the cutting body portion 11 . In addition, since the alignment body part 12 is spaced apart from the cutting body part 11 and partially connected through the gap support bridge 15, the problem that the curable impression resin adheres to the cutting guide edge 14 is a problem. can be adversely prevented.

That is, the present invention is the alignment jig part ( 17) is integrally attached to the upper portion of the cutting guide 10 . Therefore, when the cutting guide 10 on which the alignment jig part 17 is formed is bitten in the oral cavity, the cutting guide 10 is accurately aligned with the outer surface of the alveolar bone of the target arch, and the position is stably maintained through the occlusal pressure may be arrested Therefore, even if the vibration of a rotating tool such as a drill is transmitted to the cutting guide 10 to fix the anchor pin, the flow is prevented, so that the installation precision can be significantly improved.

In addition, the curable impression resin is cured in a state attached to the upper side of the alignment body (12). Accordingly, contamination or errors due to the adhesion of the curable impression resin to the portion directly guiding the cutting of the alveolar bone in the cutting guide 10 can be minimized. Through this, alveolar bone cutting using the cutting guide 10 can be performed precisely.

5A and 5B are cross-sectional views illustrating the fixing process of the cutting guide in the oral cavity in the method for placing an implant for dental restoration according to an embodiment of the present invention.

First, referring to FIG. 5A , the cutting guide 10 to which the alignment jig part 17 is integrally formed is inserted into the oral cavity and interlocked between the upper and lower jaws. At this time, it is preferable to understand that the upper jaw, which is the target arch, is in a state in which the soft tissue, the gum, is incised and the alveolar bone 4 is exposed to the outside. That is, the cutting guide 10 is directly fitted to the outer surface of the alveolar bone (4).

Here, the mating groove (17a) formed in the alignment jig part (17) is molded to the opposing jaw (3), that is, the opposing tooth end, and the inner surfaces (11a, 12a) of the cutting guide (10) are exposed. It is molded to the outer surface of (4). Then, the anchor pin 19 is inserted through the piece fastening portion 13, the end is fixed to the implantation in the alveolar bone (4). Through this, the cutting guide 10 may be mounted to be supported on the outer surface of the alveolar bone (4).

At this time, the position of the cutting guide 10 between the upper and lower jaws can be stably fixed through the occlusal pressure that the patient occludes the upper and lower jaws. Through this, the flow of the cutting guide 10 can be prevented in the process of implanting the anchor pin 19 in the alveolar bone 4 without a separate fixing means.

Referring to FIG. 5B , when the gap support bridge 15 is cut, the upper portions of the alignment jig portion 17 and the cutting guide 10 , that is, the alignment body portion 12 are separated from the cutting body portion 11 . separated and removed at the same time. Accordingly, the cutting guide rim 14 formed on the cutting body 11 is exposed to the outside.

And, the upper end (4a) of the alveolar bone exposed to protrude to the outside of the cutting guide rim 14 is cut through the cutting mechanism. At this time, as the outer surface of one side of the cutting mechanism is in contact with the cutting guide rim 14, the cutting depth may be guided. Therefore, the upper end (4a) of the alveolar bone can be cut to a precise height corresponding to the preset cutting plane (L1). Through this, the upper end (4a) of the alveolar bone is cut, and a cutting surface (4b) for implanting the dental restoration implant at a position corresponding to the predetermined implant height may be formed in the alveolar bone.

6 is a projection view showing a coupling relationship between a surgical guide and a cutting guide manufactured according to an embodiment of the present invention, and FIG. 7 is a combination of a surgical guide and a cutting guide manufactured according to an embodiment of the present invention. This is an example view of the relationship viewed from above.

6 to 7 , it is preferable that a surgical guide 50 for guiding an implantation position and direction to implant the dental restoration implant into the cut alveolar bone is further provided. At this time, it is preferable that the design information of the surgical guide 50 is set based on the three-dimensional planning image m1 like the cutting guide 10 .

In detail, it is preferable that the upper part of the 3D alveolar bone information m4a included in the target arch CT image m4 is virtually corrected with a virtual flat surface corresponding to the cutting plane L1. And, it is preferable that the design information of the surgical guide is obtained based on the three-dimensional external information (m4a) of the alveolar bone including the virtual flat surface.

In detail, it is preferable that the design information of the surgical guide 50 is set so that the inner surface corresponds to the outer surface of the cutting body 11 . Then, the design information for the guide hole 51 for guiding the implantation of the dental restoration implant is set on the upper side of the virtual flat surface, and the outer part of the piece fastening part 13 is inserted into the alignment coupling groove in the side. It is preferable that design information for (54) is set. At this time, it is preferable that the design information of the surgical guide 50 is sent to the 3D printer and 3D printed and manufactured.

And, it is preferable that the surgical guide 50 manufactured as a real product is superimposed and fixed to the alveolar bone 4 to which the cutting guide 10 is mounted. That is, when the inner surface 53 of the surgical guide 50 and the outer surface of the cutting guide 10 are mated to each other and the piece fastening part 13 is mated in the alignment coupling groove 54, the surgical guide ( 50) can be fixed in the correct position.

At this time, as the adhesive is applied between the surgical guide 50 and the inner and outer surfaces of the cutting guide 10 , the surgical guide 50 may be fixedly supported by the cutting guide 10 . Alternatively, a reinforcing anchor hole 56 through which a separate auxiliary anchor pin passes may be further formed in the surgical guide 50 . Accordingly, as the auxiliary anchor pin passes through the reinforcing anchor hole 56 and the end thereof is placed and fixed in the cutting guide 10 , the surgical guide 50 can be firmly fixed.

As such, the cutting guide 10 is used as a cutting guide 10 means for flattening the upper end of the alveolar bone and at the same time as a fixing means for fixing the surgical guide 50 for guiding the implantation of the fixture to the alveolar bone. used Therefore, after separating the cutting guide 10 from the alveolar bone, the trouble of fixing the surgical guide 50 manufactured to be fitted to the outer surface of the alveolar bone again is eliminated.

In addition, a separate anchor pin for fixing the surgical guide 50 to the alveolar bone and damage to the alveolar bone occurring while the anchor pin is further implanted can be fundamentally eliminated. In addition, it is possible to prevent in advance the problem that the placement precision of the fixture is lowered due to the mismatch between the fixing positions of the cutting guide 10 and the surgical guide 50 in the oral cavity.

Furthermore, as long as the surgical guide 50 is molded and fixed to the cutting guide 10 , the position of the guide hole 51 may be automatically aligned corresponding to the implantation information (A). Accordingly, the inconvenience of manufacturing an alignment piece for separately aligning the surgical guide 50 by using the curable impression resin can be eliminated, and the curable impression resin is adhered to the inside of the guide hole 51. It is possible to prevent problems of contamination and deterioration of precision in advance.

8 is an exemplary view showing a process of obtaining three-dimensional external information of the alveolar bone in the method for implanting a dental restoration according to an embodiment of the present invention.

Referring to FIG. 8 , it is preferable that the three-dimensional external information m4a of the alveolar bone is extracted based on the internal and external tissue data d1 and d2 of the alveolar bone displayed on the CT image m4 of the target arch.

In detail, it is preferable that the alveolar bone surface boundary contour a1 is selectively extracted from the internal and external tissue data d1, d2 of the alveolar bone displayed on the CT image m4 of the target arch. At this time, the target arch CT image m4 may be displayed in different shades depending on the tissue density. The higher the tissue density, the closer to white, and the lower the tissue density, the more gray. In addition, empty spaces such as nostrils are substantially displayed in black. Therefore, it is preferable that the alveolar bone surface boundary contour (a1) is displayed along the surface boundary of the bone tissue displayed in a different shade from the soft tissue gum or empty space through the tissue density difference.

When the tissue density is greater than or equal to a preset value, the alveolar bone surface boundary contour (a1) may be optimized and displayed as the outer boundary is determined as the alveolar bone surface boundary contour (a1). In this case, the predetermined value of the tissue density may be calculated based on the anatomical average bone tissue density value for each gender and age, and may be set for each patient by examining the tissue data for each patient. At this time, it is preferable to understand that the optimization display is displayed as surface data continuously connected so that the alveolar bone surface boundary contour a1 has a minimum error range.

In addition, the alveolar bone surface boundary contour a1 may be precisely set through the cross-sectional data S1 and S2 corresponding to the X-axis, Y-axis, and Z-axis of the target maxillary CT image m4. It is preferable that the selected and extracted alveolar bone surface boundary contour (a1) is converted into 3D surface information data and set as the 3D alveolar bone external information (m4a).

That is, it is preferable to understand that the three-dimensional outer surface information m4a of the alveolar bone is surface information in which the inner surface coordinate value and the outer surface coordinate value of the image are substantially the same. Therefore, while the design information of the cutting guide 10 is precisely acquired based on the face information selected and extracted from the target arch CT image m4, the cutting guide 10 and the target-side impression model 4A The 3D information about the 3D can be easily set or converted into a 3D graphic file format that can be easily processed in 3D.

In other words, when the target arch CT image (m4) is used as the design information of the cutting guide 10 or the target-side impression model 4A, the image processing, editing and conversion speed is slow, and the design time is long. Unlike the prior art, in the present invention, only the three-dimensional external shape information m4a of the alveolar bone is selectively extracted and used from the CT image m4 of the target arch. Therefore, the overall image processing, editing and conversion speed is fast, and the design time can be significantly reduced through this. Moreover, as the CT image is selectively extracted as the face information, the 3D external shape information m4a of the alveolar bone, the file size may be significantly reduced. Through this, since each image can be clearly implemented during image processing, editing, and conversion work even in a low-spec computer device, the efficiency and economic efficiency of the work can be significantly improved.

In addition, the internal tissue information covered by the gums can be clearly determined through the three-dimensional external information m4a of the alveolar bone acquired based on the CT image m4 of the target arch. Through this, the cutting height of the alveolar bone can be precisely set in consideration of the anatomically dangerous structure, the height of the dental restoration, and the patient's smile line. Therefore, it can be cut and flattened at substantially the same height from the anterior to the posterior side of the alveolar bone, and based on this, the overall design of the cutting guide 10, the surgical guide 50 and the dental restoration is simplified and Since the mutual installation precision is improved while being simplified, the reliability of dental restoration can be significantly improved.

Moreover, the accuracy between the image and the actual alveolar bone contour is improved because the alveolar bone surface boundary contour (a1) is optimized and clearly selected and extracted through the tissue density difference separated by shading, and the cutting guide (10) designed based on this The precision can be significantly improved.

Meanwhile, referring to FIGS. 5A to 5B , the cutting guide 10 applied to the present invention includes the cutting body 11 , the alignment body 12 and the gap support bridge 15 .

In detail, the cutting body 11 is preferably formed so that the inner surface 11a of the target arch is aligned with the surface of the alveolar bone 4 of the target arch based on the CT image. And, the cutting guide rim 14 of the cutting body 11 is formed on the upper rim corresponding to the cutting plane, and the piece fastening part 13 through which the anchor pin 19 is penetrated is formed on the outside It is preferable to be formed to protrude.

And, the alignment body part 12 is formed so as to be spaced apart from the upper side of the cutting body part 11 to correspond to the cutting space (u). At this time, the lower edge of the alignment body 12 is formed to correspond to the division plane spaced apart from the cutting plane, and the inner surface 12a is formed based on the CT image of the target arch. The alignment jig portion 17 is formed in the alignment body portion 12 through the above-described process, and the mating groove 17a in which the opposing end of the opposing arch 3 is fitted to the alignment jig portion 17 . ) is formed.

Accordingly, when the alignment jig unit 17 bites the cutting guide 10 attached to the alignment body unit 12 in the oral cavity, the cutting guide 10 may be aligned and fixed at an accurate fixing position.

At this time, the cutting body part 11 and the alignment body part 12 are integrally formed to correspond to the cutting space u, and the gap support bridge 15 is separated so that the cutting body part 11 is selectively divided. And it is preferable to be formed spaced apart in plurality along the edge of the alignment body (12). Furthermore, the gap support bridge 15 may be formed so that each end interconnects the labial outer surface of the cutting body 11 and the labial outer surface of the alignment body 12 . Through this, damage and deformation of the cutting guide rim 12 due to driving of a mechanism for separating the upper and lower parts of the cutting guide 10 is prevented, and thus cutting precision can be significantly improved.

On the other hand, terms such as "comprises", "comprises", "provide" or "have" described above mean that the corresponding component may be inherent, unless otherwise stated. It should be construed as not excluding components, but may further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Terms commonly used, such as those defined in the dictionary, should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and variations can be implemented by those of ordinary skill in the art to which the present invention pertains without departing from the scope of the claims of the present invention. and such modifications are within the scope of the present invention.

3A: Impression model of the opposing side 4A: Impression model of the target side
10: cutting guide 11: cutting body
12: alignment body part 13: piece fastening part
14: cutting guide border 15: gap support bridge
17: alignment jig part 50: surgical guide
54: alignment coupling groove

Claims (6)

The CT image of the target arch and the scanning image of the opposite arch are aligned and matched corresponding to the vertical height, and the design information of the cutting guide that is partially connected with the upper and lower parts spaced apart corresponding to the cutting plane preset in the target arch CT image is obtained, a first step of manufacturing a target-side impression model, an opposing-side impression model, and a real cutting guide by 3D printing the CT image, the anteromaxillary arch scanning image, and the design information of the cutting guide;
The target-side impression model and the opposing-side impression model are arranged occlusally corresponding to the vertical height, and a curable impression resin is applied to fill the space between the cutting guide temporarily mounted on the target-side impression model and the opposing-side impression model. a second step of forming an alignment jig part integrally attached to the upper part of the cutting guide, which is injected and hardened to form a mating groove on the outer surface of which the end of the opposing-side impression model is mated;
The cutting guide formed integrally with the alignment jig part is interlocked in the oral cavity, and the inner surface of the cutting guide and the mating groove are fitted to the end of the target arch and the opposing arch, and the anchor pin penetrates the lower side of the aligned cutting guide. a third step of being fixed to the alveolar bone; and
The upper part of the alveolar bone is cut along the cutting guide rim exposed to the outside by separating and removing the alignment jig part and the upper part of the cutting guide at the same time to place the dental restoration implant at a position corresponding to the preset height. A method of placing an implant for dental restoration comprising a fourth step of forming a surface. The method of claim 1,
The first step is
Setting the inner surface of the cutting guide based on the three-dimensional external shape information of the alveolar bone included in the CT image of the target arch;
The cutting guide frame is formed along the upper edge of the virtual divided lower part corresponding to the cutting plane, and the piece fastening part through which the anchor pin is penetrated is formed to protrude outwardly on the side surface, and the cutting body part is set virtual;
A lower edge is set corresponding to the division plane spaced apart to form a cutting space above the cutting plane, and an alignment body part virtually connected to the cutting body part through a gap support bridge set to be selectively cut is set virtual An implantation method for a dental restoration, comprising a. 3. The method of claim 2,
The first step is
Compensating the upper part of the alveolar bone three-dimensional appearance information to a virtual flat surface corresponding to the cutting plane;
The inner surface is set to match the outer surface of the cutting body, and a guide hole for guiding the implantation of the dental restoration implant is formed on the upper side of the virtual flat surface, and the outer surface of the piece fastening part is inserted into the aligning groove on the side. The implantation method for dental restoration, characterized in that the design information of the surgical guide to be formed is further set. 3. The method of claim 2,
In the first step, the gap support bridge is virtually set to connect the labial outer surface of the alignment body part and the labial outer surface of the cutting body part,
The implantation method for dental restoration, characterized in that it further comprises the step of setting a plurality of fixing projections to fix the curing and attachment positions of the curable impression resin on the outside of the alignment body portion. 3. The method of claim 2,
The first step is a step in which the alveolar bone surface boundary contour is selectively extracted along the boundary between images displayed differently in response to the tissue density displayed in the internal and external tissue data of the alveolar bone on the CT image, and the alveolar bone is selectively extracted The surface boundary contour is converted into three-dimensional surface information data, comprising the step of calculating and setting the three-dimensional surface information of the alveolar bone,
When the tissue density is greater than or equal to a preset value, it is determined as the alveolar bone surface boundary contour and optimized and displayed. Based on the CT image of the target arch, the inner surface is formed to match the surface of the alveolar bone of the target arch, and a cutting guide border is formed along the upper edge formed in response to a preset cutting plane, and a piece fastening part through which an anchor pin is penetrated on the side is outside a cutting body formed to protrude into;
A lower edge is formed to correspond to a division plane spaced apart from the cutting plane so that the cutting body is spaced apart from the upper side of the cutting body to correspond to a preset cutting space, and an inner surface is formed based on the CT image of the target arch, the cutting body is the an alignment body portion formed integrally with an alignment jig portion formed with a mating groove to which an opposing end is formed so as to be aligned and fixed in the target arch; and
The cutting body and the alignment body are spaced apart to correspond to the cutting space and are integrally formed so that each end is selectively divided so as to connect the labial outer surface of the cutting body and the labial outer surface of the alignment body. A plurality of gap support bridges A cutting guide applied to the implantation method of dental restorations, including

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