KR101544776B1 - method for manufacturing dual guide and crown, abutment in mouth for dental implant - Google Patents

Abstract

In order to improve the precision of implant surgery by precisely obtaining images about the inside of the oral cavity of a subject, the present invention provides a method for manufacturing a dual guide and an implanted material for a dental implant procedure, which comprises: a first step of preliminarily matching a first scanning image, acquired by scanning a denture having fitting grooves to be fitted to a dental implant target portion of the subject formed on the inner side thereof and a plurality of reference markers attached to the outer side thereof, and a second scanning image, acquired by scanning upper and lower jaws having the denture installed, wherein an integrated scanning image, in which vertical dimension is taken into account, is obtained by inverting images of the fitting grooves to be three-dimensional and a CT image is obtained by capturing the upper and lower jaws with CT equipment; a second step of obtaining a three-dimensional articulation guide image by primarily matching the integrated scanning image and the CT image with respect to the reference markers, wherein an imitation guide image, obtained by setting and removing an implanted region based on a boundary region of artificial teeth of the denture selectively inputted corresponding to an implanted position of the implanted material within the first scanning image, is virtually arranged on the outer side of the images of fitting grooves inverted to be three-dimensional; and a third step of setting the height of a crown based on the three-dimensional articulation guide image, wherein a dual guide, including a first guide in which a fixing groove portion fitted to the dental implant target portion based on the imitation guide image and an opening portion corresponding to the removed implant region are formed and a second guide in which the implant region becomes three-dimensional to be connected to the opening portion and a guide hole is formed along an implanted position of a fixture, is designed and three-dimensionally printed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dual guide and a method for manufacturing a dental implant,

The present invention relates to a dual guide and method for manufacturing a dental implant, and more particularly, to a dual guide and a method for manufacturing a dental implant, which can accurately acquire an image of an inside of a mouth of a client and improve precision of the dental implant, And a manufacturing method thereof.

Generally, an implant refers to a substitute for replacing a human tissue when the original human tissue is lost, but refers to implanting an artificial tooth in the dentistry. That is, a fixture made of titanium or the like which does not have a rejection reaction to the human body can be substituted for the lost root, and then the teeth are inserted into the alveolar bone, and the tooth is restored by fixing the artificial tooth.

In detail, in normal prostheses or dentures, the surrounding teeth and bones are damaged over time, but the implants can prevent damage to surrounding tooth tissues and can be used stably because there is no secondary tooth decay factor. In addition, since the implant has the same structure as the natural teeth, there is no pain or foreign body sensation of the gums, and it is advantageous that the implant can be used semi-permanently.

In the meantime, the implant treatment is performed by forming a perforation in the alveolar bone using a drill and placing the fixture in the perforation. Procedures for forming the perforation and implanting the fixture are different for each patient. This is because the position, depth, and orientation of the implant should be determined in consideration of various factors such as the patient's tooth condition, the position of the tooth requiring the implant treatment, and the condition of the alveolar bone of the patient.

As a result, the drilling operation for alveolar bone drilling has a difficulty in accurately measuring the depth and direction of the operator during the course of the operation as well as for the novice user. Further, in the case of a beginner who is not experienced in operation, It is very difficult to measure the depth to be treated.

Further, when forming the perforations in the alveolar bone, the practitioner applies the force to the drill to perform the drilling operation, and it is difficult to determine to what extent the drilling operation has been performed. Furthermore, drill insertion above a certain depth can cause serious problems that damage the nerve of the alveolar bone.

On the other hand, when the drilling operation is completed before reaching a certain depth, the depth of the drilled hole is shallow, and excessive force is required to fix the fixture. In addition, there was a problem that the screw around the perforation was damaged or the fixture could not be fixed perfectly, so that it was re-operated afterwards.

Accordingly, an auxiliary device called a surgical guide is used to grasp the exact position and direction to perform the drilling operation.

1 is a flowchart showing a conventional method of manufacturing a surge guide.

As shown in FIG. 1, a conventional surge guide is manufactured through the following process. First, a three-dimensional image of the inside of the subject's mouth is obtained through a CT scan, and a three-dimensional external shape image of the inside of the subject's mouth is obtained through an oral scan (s1).

Here, the three-dimensional image through the CT scan shows the shape of the crown (a part of the tooth revealed outside the gum) and the root (the part joined with the alveolar bone in the gum), and the shape of the alveolar bone and the bone density of the crown, root and alveolar bone Information.

In addition, the three-dimensional external shape image through the oral scan includes information on the shape of the crown and the gums in the oral cavity.

Then, when each image is acquired, the two images are matched with each other based on the intraoral point set by the practitioner, such as the singularity of the tooth (s2). Subsequently, an implant treatment plan is established through the image-matched result (s3), and a surge guide capable of guiding the treatment according to the treatment plan is manufactured (s4).

At this time, the surgeon guide for the procedure guide should be prepared by adding the experience of the practitioner along with various anatomical treatment conditions such as the thickness of the gum, the alveolar bone distribution, the position of the subject to be treated. For this purpose, it is preferable to use the external appearance data of the oral tissues together rather than to use only the direct data such as CT data.

In addition, the three-dimensional external shape image is obtained by moving the oral scanner along the oral cavity of the subject and combining the scanned information. However, since the curvature of the dentition may appear distorted inside the oral cavity during the process of combining the scanned information, it is necessary to correct the image. In this way, in order to compensate for the insufficient information in each of the images and to correct the distorted information, the image matching step s2 is indispensable.

At this time, in order for the three-dimensional image and the three-dimensional outer shape image to be image-matched, a crown region, which is a common portion of the two images, is required. However, in the case of the edentulous patient, since there is no crown area itself, a common part between the three-dimensional image and the three-dimensional outer shape image hardly exists. As a result, there is a problem in that the image matching between the respective images is difficult and even if the matching is performed, the inaccurate information is provided.

Furthermore, when the mandible is edentulous in the inside of the oral cavity, since the shape of the mandible is not clearly specified because the amount of the gums is large and the motive tissue such as the tongue is distributed and the fluidity of the tissue is high, it is difficult to obtain the external shape through the oral scan.

In addition, even if the reference marker is attached to the inside of the mouth for use as a reference point of matching, there is a problem that the reference marker is not substantially fixed due to the fluidity of the tissue. Accordingly, in the image matching step, even if the reference markers are matched with the reference mark, the reliability of the obtained image is degraded.

On the other hand, when designing the crown of the implant to replace the lost tooth in the mouth of the client, the height, width, chewing surface, and chewing direction of the crown are calculated based on the information of the tooth remaining around the lost tooth. However, in the case of edentulous patients, there is no peripheral tooth to be compared. Therefore, the crown was designed through the experience of the practitioner or the existing procedure data.

Therefore, when the manufactured crown is placed inside the oral cavity, it is often the case that the treated person feels uncomfortable. In addition, since a plurality of crowns have to be manufactured and placed repeatedly to compensate for this, there is an increase in the cost of the procedure, an increase in the duration of the implant treatment, and inconvenience to the physician.

In addition, an impression model is manufactured for the purpose of grasping the shape of the inside of the mouth. The impression making process for manufacturing a precise impression model is not only troublesome but also unnecessary cost, and the cost of the implant treatment itself is increased.

Korean Patent No. 10-0977911

In order to solve the above problems, it is an object of the present invention to provide a double guide and a method for manufacturing a dental implant, in which the image of the inside of the mouth of a patient is accurately acquired and the precision of the dental implant procedure is improved.

According to an aspect of the present invention, there is provided a dental prosthesis including a first scanning image obtained by scanning a denture having a plurality of reference markers attached to its outer side, The combined scanning image obtained by scanning the installed upper and lower jaws is preliminarily matched with the acquired secondary scanning image and inverted so that the image of the mold groove is solidified to obtain an integrated scanning image. ; The method according to any one of claims 1 to 3, wherein the 3D scan image is obtained by integrating the integrated scan image and the CT image with reference to the reference marker, A second step of setting and erasing the embedding area based on the acquired imitation guide image, and a virtual step disposed outside the inverted embedding image so that the obtained imitation guide image is stereoscopically formed; And a controller for setting a height of the crown based on the three-dimensional occlusion guide image, wherein a height of the crown is set based on the imaged guide image, And a third step of designing and three-dimensionally printing a double guide including a second guide having a guide hole formed along the fixture mounting position, wherein the embedding area is solidified so as to be connected to the opening, and a third step Guide and a method for manufacturing an implant.

Here, in the second step, the disposing area may be divided into a plurality of discrete areas along the boundary between the artificial teeth of the denture corresponding to the placement position of the object and the peripheral artificial teeth adjacent to the artificial teeth of the denture corresponding to the object- A step of selecting and inputting a boundary point, and calculating a closed surface including a connecting line between each boundary point and adjacent other boundary points.

In the third step, it is preferable that the alignment protrusions for guiding the alignment and the alignment grooves are formed to be opposed to the mutually facing surfaces of the second guide and the opening of the first guide.

At this time, in the third step, the shape and the arrangement state of the crown are set based on the three-dimensional occlusion guide image including the artificial tooth shape information of the denture obtained from the primary scanning image, And the guide hole of the fixture is set based on a position of the fixture that is set based on the shape and the arrangement state of the crown.

Meanwhile, in the first step, an end shape of the denture and the mating teeth is formed on the outer surface of the body to be filled in the space to support the space between the denture and the mating teeth during the occlusion of the upper and lower teeth provided with the denture, And obtaining the alignment piece formed with the inverted mold part so as to be inverted.

Through the above-mentioned solution, the dual guide and method for manufacturing a dental implant according to the present invention provides the following effects.

First, information is provided to simultaneously design and manufacture dual guides and implants that have improved precision and reliability by matching each image information obtained by using the denture manufactured by considering the vertical hardness and the shape of the masticated surface of the patient. Thereby shortening the number of visits of the physician and the operation steps of the practitioner. Thus, it is possible to provide an implant-based technology device capable of completing the placement and installation of the implant in a short period of time.

Secondly, even in the case of an edentulous patient who has difficulty in attaching a reference marker, which is a reference point of matching between the images, because the fluidity of the gums is high, the denture used is scanned to reverse the shape of the mold- It is economical because it is possible to reduce the time and cost required for manufacturing an additional impression model.

Third, the first guide having the opening portion formed by erasing the placement region of the object is three-dimensionally printed on the basis of the denture, so that the second guide having the guide hole is detachably fastened to the opening, The abutment and the crown can be continuously engaged even in a state where the first guide is fixed to the to-be-placed part, as long as the second guide is separated.

Fourth, because there is an artificial abutment shape of the denture outside the opening of the first guide, the crown can be fastened and the arrangement relation with the surrounding teeth can be easily grasped, and convenience for the procedure can be remarkably improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart illustrating a conventional dual guide manufacturing method. FIG.
FIG. 2 is a flow chart illustrating a method of manufacturing a dual guide and an implant for dental implant treatment according to an embodiment of the present invention. Referring to FIG.
FIG. 3 is an exemplary view showing an image of a denture with a reference marker attached thereto according to an embodiment of the present invention; FIG.
FIG. 4 is an exemplary view showing a state in which a primary scanning image and a secondary scanning image are preliminarily matched according to an embodiment of the present invention; FIG.
5 is an exemplary view illustrating an integrated scanning image according to an embodiment of the present invention;
FIG. 6 is an exemplary view illustrating an image of a three-dimensional occlusion guide according to an embodiment of the present invention; FIG.
7A and 7C illustrate an example of a dual guide according to an embodiment of the present invention.
FIG. 8 is an exemplary view showing a process of fastening a first guide according to an embodiment of the present invention to a tooth placement part; FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

FIG. 2 is a flowchart illustrating a method of manufacturing a dual guide and an implant for dental implant treatment according to an embodiment of the present invention. Referring to FIG. FIG. 3 is an exemplary view illustrating an image of a denture in a state in which a reference marker is attached according to an embodiment of the present invention. FIG. 4 is a diagram illustrating an image of a primary scanning image and a secondary scanning image according to an exemplary embodiment of the present invention. FIG. 9 is an exemplary view showing a state in which images are preliminarily matched. 5 is an exemplary view illustrating an integrated scanning image according to an exemplary embodiment of the present invention, and FIG. 6 is an exemplary view illustrating an image of a three-dimensional occlusion guide according to an exemplary embodiment of the present invention. FIGS. 7A and 7C are views illustrating a double guide according to an embodiment of the present invention. FIG. 8 is a view illustrating a process of fastening a first guide according to an embodiment of the present invention to a tooth placement target portion. .

In the meantime, the dental implant treatment is performed by forming a hole in the alveolar bone using a drill, and placing the fixture in the hole. At this time, an auxiliary device called a surgical guide is used so as to grasp the exact position and direction to perform the drilling operation.

That is, when the implant treatment plan is established according to the condition of the inside of the mouth of the patient, the double guide is prepared so as to guide the established treatment plan and guides the direction or depth of the drilling or fixture placement . At this time, the double guide according to the present invention provides a structure in which the conventional surge guide is constructed in a double structure to guide a more precise implant procedure.

As shown in FIGS. 2 to 8, the dual guide and method for manufacturing a tooth implant according to an embodiment of the present invention proceeds as follows. At this time, the double guide and the method of manufacturing the implant for the dental implant treatment can be applied to the implant treatment of a patient having at least one of the maxillary and mandibular edentulars.

It is preferable that the above-mentioned implants include a fixture replacing the root in the implant treatment for replacing the lost tooth, a crown replacing the crown, and an abutment mediating between the fixture and the crown. In addition, the manufacture of the above-mentioned implants can be carried out by separately manufacturing the crowns corresponding to the dental and vertical diameters of the recipient, arranging the crown, and selecting standardized fixtures and abutments corresponding to the bone tissue of the subject It is desirable to understand it as inclusive. Of course, depending on the case, the abutment may be produced individually corresponding to the dentist's dentition.

The primary scan image 11 is scanned by scanning the inner surface and the outer surface of the denture 50 having the mold recesses 54 to be fitted with the tooth placement object of the subject and having a plurality of reference markers 40 attached to the outer surface thereof. . Then, the denture 50 is installed, and the upper and lower teeth are orally scanned to acquire the secondary scanning image 12 and preliminarily match with the primary scanning image 11. At this time, the integrated scanning image 13 in which the vertical height is considered is obtained by inverting the shape of the mold recess 54 from the primary scanning image 11 on the preliminarily matched image, and the upper and lower teeth are CT And acquires the CT image 14 (s100).

Here, it is preferable that the tooth placement target portion is a portion to perform the implant treatment due to the loss of natural teeth in the maxilla or mandible. The denture 50 is preferably a tooth substitute artificially manufactured so that the tooth can be chewed by attaching the denture 50 to the tooth placement part where natural teeth are lost.

The outer surface of the denture 50 refers to the inner surface of the denture 50 and the outer surface of the denture 50. The inner surface of the denture 50 refers to the inner surface of the mold recess 54, 52, respectively.

For example, when at least one of the upper and lower mandibles of the subject is edentulous, the denture 50 is installed on the tooth placement target portion. At this time, the dent 50 includes an artificial abutment 51 for replacing natural teeth, and a gingival coupling part 52 formed with a mold groove 54 to be engaged with the outer surface of the tooth placement target part.

Specifically, the artificial abdomen 51 is processed in consideration of the vertical diameter and the shape of the chewing surface so that the chewing surface stably engages with the opposing tooth t, which is opposed to and selectively engaged with the artificial abdomen 51. Thus, the user can minimize the inconvenience when the dentist 50 is installed after the denture 50 is installed.

In addition, the gum coupling part 52 may extend to substantially cover the gingival sidewall of the to-be-placed part, and may cover up to the palate in the case of the maxilla. At this time, the outer shape of the gum coupling part 52 is made substantially similar to the actual gum shape of the subject to be aesthetized, and the mold groove 54 has an inner surface Profile.

In other words, since the die groove 54 is formed so as to be substantially coincident with the outer surface profile of the tooth placement target portion, the flow of the denture 50 is minimized when the subject instructs the denture 50 after the denture 50 is installed, The feeling can be reduced. In addition, it is possible to prevent scratches, pressing damage, and the like on the surface of the tooth placement target portion which may be caused by failure of the mold recess 54 to be formed by the to-be-molded portion, thereby significantly improving the feeling of satisfaction of the subject.

When the denture 50 thus manufactured is scanned, the image of the primary scanning image including the shape information of the mold groove 54, which is formed by the vertical diameter of the subject and the shape of the chewing surface and the outer surface profile of the tooth- (11). Accordingly, the height and shape of the crown can be calculated quickly and easily through the information obtained from the primary scanning image 11.

It is preferable that a plurality of reference markers 40 are attached to the outer side of the denture 50 while scanning the inner and outer surfaces of the denture 50 in order to produce a double guide and an implant for the implant treatment Do. Here, the reference marker 40 may be used as a reference point for aligning and matching between images obtained for the implant treatment plan.

At this time, the reference markers 40 are attached to the outer side of the denture 50 at a plurality of locations, preferably at three or more locations. That is, by attaching the reference markers 40 in a plurality of three or more places, the degree of association between images can be remarkably improved in the matching step. As the degree of fit is improved, the precision in manufacturing the dual guide and the implant for the dental implant treatment is improved, and the satisfaction of the technician in the procedure can be remarkably improved.

Here, the reference marker 40 may have a predetermined volume such as a cylinder or a polygonal column. At this time, either one of the upper surface and the lower surface facing each other may be attached to the outside of the denture 50, and the other surface spaced apart from the one surface may be used as a matching reference at the main matching.

By attaching the reference marker 40 to the outside of the denture 50, the reliability of the image of the reference marker 40, which is a matching reference point when matching the images, can be improved. Specifically, in the case of a edentulous patient, the fluidity of the gingiva in the tooth placement target portion is high, so that even when the reference marker 40 is attached, the reference marker 40 flows and is not displayed at the same position among the images.

In order to solve this problem, it is possible to prevent the reference marker 40 from flowing by attaching the reference marker 40 to the outer side of the gum coupling part 51 of the substantially rigid dent 50. Accordingly, since the positions of the reference markers 40 displayed between the respective images are substantially the same, the overlapping degree and the degree of fit can be remarkably improved at the time of matching.

Further, the reference marker 40 is displayed on the image at the time of designing the crown through the three-dimensional occlusion guide image 15 so as to be attached to the outer surface of the gum combiner 52 of the denture 50 so as not to interfere with the crown design . In addition, the reference marker 40 can be easily removed after obtaining a desired image by attaching it using a soft resin or an adhesive for an implant.

Meanwhile, in a state where the denture 50 with the reference marker 40 attached thereto is placed on the to-be-placed object, the upper and lower teeth of the subject are orally scanned to obtain the secondary scanning image 12.

Here, the secondary scanning image 12 includes an occlusal scan image in which an orthal scan is performed in an occlusion state of the upper and lower males of the subject who is provided with the denture 50, and an outline of the opposing tooth t in the up- Includes one spaced scanning image.

In the present invention, the artificial abdomen 51 of the denture 50 and the opposing tooth t of the denture 50 are in contact with each other, As shown in FIG. The spaced-apart state is preferably understood as a state in which a predetermined gap is formed in the vertical direction between the teeth of the upper and lower teeth by opening their mouths.

In detail, the occlusion scanning image may obtain three-dimensional contour information in a state where the opposing tooth t and the artificial abutment 51 of the denture 50 are substantially in contact with each other in the occlusion state of the upper and lower males. Here, the three-dimensional external shape information of the touched state refers to three-dimensional external shape information in a state in which the artificial abdomen 51 and the opposing tooth t are engaged, the shape of the gum coupling part 52 of the denture 50, t-side gingival shape or the like.

In addition, the spacing scanning image may obtain three-dimensional contour information of the contour tooth (t) in a state of being separated from the upper and lower contour. Here, the three-dimensional contour information of the contour tooth (t) may include the contour tooth (t), its gums, the shape of the chewing surface of each tooth, the placement relationship, and the like.

On the other hand, the primary scanning image 11 and the secondary scanning image 12 are preliminarily matched. In detail, the secondary scanning image 12 includes the occlusion scanning image and the spacing scanning image, and is obtained by automatically superimposing a common region between the images through a computer-based image processing process as a reference point .

At this time, the common area may be a part of the opposing tooth (t), or the separate overlapping reference point may be set in some cases. That is, the secondary scanning image 12 is formed on the artificial tooth portion 51 of the denture 50 and the opposing tooth t in the state where the three-dimensional outer shape information of the opposing tooth t and the vertical axis of the subject are engaged, Dimensional appearance information in a state in which the first and second sensors are in engagement with each other.

Then, the superimposed primary scanning image 11 and the secondary scanning image 12 are automatically preliminarily matched. At this time, the integrated scanning image 13 in which the vertical height is considered is obtained by inverting the image of the mold recess 54 of the primary scanning image 11 so as to be solidified.

The secondary scanning image 11 including the contour information of the dentures 50 and the contour information of the occlusion state of the contour tooth t and the denture 50 and the contour tooth t, And superimposes the scanning image 12 through a computer-based imaging device. At this time, each scanning image can be automatically matched with respect to a common portion, and the operator may manually match the case. In this case, the overlapping degree between the common portions may be increased to perform preliminary matching have.

Then, the mold recess 54 of the concave shape included in the primary scanning image 11 on the superimposed image is inverted so as to be convexly solidified. Since the inner surface profile of the mold groove 54 is substantially the same as the outer surface profile of the tooth placement target portion as described above, it is possible to easily receive the appearance information of the tooth placement target portion simply by scanning the dent 50 . Furthermore, a clearer and more precise scanning image can be obtained by scanning the denture 50 formed of a substantially rigid material rather than directly scanning the outer surface of the to-be-placed object with high fluidity.

In this case, the process of inverting the shape of the mold groove 54 to be three-dimensional is as follows. First, an unnecessary image excluding the inner profile image of the mold recess 54 and the reference marker 40 image is removed from the primary scanning image 11 superimposed on the secondary scanning image 12 to obtain an image . Here, the erased unnecessary image can be understood as an image of the outer shape of the artificial abdomen 51 and the gum combiner 52 of the denture 50.

Then, the unnecessary image is inverted so that the inner surface image of the mold recess 54, which is formed substantially concave in the erased image, is inverted and imaged so as to appear as the protruded shape 54a. At this time, the protruded shape 54a of the mold recess 54 substantially corresponds to the profile of the teeth to be placed. Thus, an image corresponding to the tooth placement target portion with improved reliability can be obtained even with the image obtained by attaching the reference marker 40 to the solid outer surface of the denture 50 instead of the tooth placement object having high fluidity can do.

In addition, since the process and time required to manufacture a separate impression model for the tooth placement target portion are omitted, the time required for the implant treatment is significantly shortened, and the cost for manufacturing the impression model is reduced, which is economical.

At this time, it is also possible to further perform a correction operation of connecting the gap between the image of the protruded mold groove 54a and the image of the reference marker 40 by eliminating the image of the gum combiner 52 having a predetermined thickness have. Accordingly, the reference point for matching between the integrated scanning image 13 and the CT image 14 can be further clarified, and reliability of image information obtained can be significantly improved.

Meanwhile, as described above, the occlusion scanning image can be erased from an image in which the primary scanning image 11b and the secondary scanning image 12 are superimposed so that the image of the mold groove 54 is solidified. In this way, the primary scanned image 11b, which is inverted so that the separated scanning image corresponding to the three-dimensional external shape of the confrontation tooth t and the mold concave image are solidified, The vertical height value to be calculated can be easily obtained.

The length L from the end of the tooth placement target portion to the end of the confrontation tooth t is calculated in consideration of the vertical height calculated from the acquired integrated scanning image 13 and the height of the opposing tooth t, ) Can be calculated. That is, the height L of the crown (c) to be designed later can be determined by calculating the length (L) from the end of the tooth placement target portion to the end of the opposing tooth (t). Here, the end of the tooth placement target portion is preferably understood to mean the uppermost portion of the alveolar ridge.

That is, since the denture 50 is manufactured in consideration of the vertical diameter, the vertical diameter is easily calculated from the integrated scanning image 13 considering the vertical diameter, .

At this time, by using the denture 50 already used by the client, a separate impression manufacturing process is not required. Furthermore, the denture 50 is manufactured in consideration of the inner surface profile, the vertical height, the shape of the chewing surface, and the relationship between the teeth of the mold recess 54 corresponding to the tooth placement target. Accordingly, the information required for manufacturing the double guide and the molding can be easily provided simply by scanning the inner and outer surfaces of the denture 50. Of course, if there is no denture 50 in use by the client, a temporary denture may be produced and performed as described above.

On the other hand, the two-dimensional and three-dimensional internal tissue information inside the oral cavity can be acquired from the CT image 14 obtained by CT imaging the upper and lower jaws of the subject. Here, the two-dimensional and three-dimensional internal tissue information includes the shape of the alveolar bone and the bone density of the inside of the subject through the CT scan, and the image of the reference marker 40 can be acquired together. For this purpose, the reference marker 40 is preferably provided as a radiopaque material so that it can be displayed on the image even during the CT scan.

At this time, the order of acquiring each image can be changed flexibly according to the practitioner's procedure style. For example, the CT image 14 through CT imaging may be acquired first and the primary scanning image 11 and the secondary scanning image 12 acquired. In addition, the process of reversing the mold concave shape to be solidified from the primary scanning image 11 may be performed first, and may be overlapped with the secondary scanning image 12 as the case may be.

On the other hand, when the acquired integrated scanning image 13 and the CT image 14 are superimposed on the reference marker 40 and the degree of fit between the images is outputted, And acquires the guide image 15. Then, the embedding area is set and erased on the basis of the artificial tooth boundary area of the denture selected and input corresponding to the placement position of the primary scanning image, and the embedding image obtained by inverting the embedding image (S200).

In detail, the three-dimensional occlusion guide image 15 can be obtained by matching the reference marker 40, which is paired with the integrated scanning image 13 and the CT image 14 in mutually opposing parts, with the matching reference point . At this time, the main matching is performed by superimposing the reference markers 40 included in the integrated scanning image 13 and the CT image 14, and sets the common portion as a comparison region. Then, each of the images is corrected so that the uppermost portion and the outermost portion of the comparison area of the integrated scanning image 13 and the CT image 14 coincide with each other.

In detail, the integrated scanning image 13 including the contour tooth (t) and the contour information of the denture 50 and the CT image 14 containing the inside information of the contour are converted into three-dimensional vector data and displayed . The operator can display a similar position as a matching reference point for each image of each pair of reference markers 40 displayed on the integrated scanning image 13 and the CT image 14, and input the same.

At this time, the reference markers 40 displayed on each image are matched in pairs for mutually corresponding positions on the respective images, and images of the reference markers 40 of each pair are overlapped to obtain an initial deviation map having a small error . Then, an image correction operation can be performed in the image matching process through the deviation map to acquire the highly precise and matched three-dimensional occlusion guide image 15.

Here, the degree of fit means that the degree of similarity between the integrated scanning image 13 and the CT image 14 is represented by a combination error between the two images. In detail, the lower the absolute value of the above-mentioned formulas, the more the two images coincide with each other and are superimposed on each other. On the contrary, the higher the absolute value of the above-mentioned combination error, the more the two images are overlapped.

As the degree of association between the reference markers 40 displayed on each of the images increases, it can be interpreted that the mutual opposing parts of the integrated scanning image 13 and the CT image 14 are also increased. Furthermore, as the degree of such a degree of disintegration is output for each color, the practitioner can quickly and intuitively judge the correctness of the eccentricity of the image registration result.

As a result, a rapid image processing operation can be performed and a subsequent correction operation for acquiring a precise three-dimensional occlusion guide image 15 can smoothly proceed. On the other hand, the three-dimensional vector data of each image can be digitized and stored in a storage device of a computer, and an image processing process of superimposing each image on a computer can be performed.

Furthermore, the three-dimensional occlusion guide image 15 can be obtained using the digitized vector image of the integrated scanning image 13 and the CT image 14. That is, by processing the vector information using a computer-based simulation program, image processing for each image can be performed to increase the degree of association for each image common part in the deviation map.

On the other hand, in the three-dimensional occlusion guide image 15, the image of the mold recesses 54a inverted to be solidified is superimposed on the secondary scanning image 12 and the CT image 14 corresponding to the confrontation tooth t Is displayed. At this time, it is preferable that the imitation guide image 21 is virtually disposed outside the image of the mold recess 54a inverted to be three-dimensional.

Here, the imitation guide image 21 can be obtained by the following procedure. First, an artificial tooth boundary region of the denture 50 is selected and input corresponding to a placement position of an object in the primary scanning image 11. At this time, it is preferable that the placement position of the implant is understood as a portion in which the placement of the implant is planned in the tooth placement target portion.

The artificial tooth boundary region of the denture is preferably understood as an outer boundary portion of the artificial tooth corresponding to the placement position of the artificial tooth portion 51. For example, if the position of the implant corresponds to the mandibles 36 and 37, the boundary region of the artificial tooth of the dentition is divided into 36 teeth and artificial teeth corresponding to 35, and between artificial teeth corresponding to 37 and 38 adjacent thereto. It can mean.

Specifically, the placement region is configured to select a plurality of boundary points (4) along a boundary line between the artificial tooth of the denture corresponding to the placement position and the peripheral artificial tooth portion adjacent to the artificial tooth of the denture corresponding to the placement position of the implant . At this time, the boundary line may be a boundary between the artificial teeth or, in some cases, a boundary between the artificial teeth and the gum-joint part.

The closing surfaces 4b and 4c are calculated inside the boundary points 4 and the adjacent boundary points by connecting lines 4a and the inside of the closing surfaces 4b and 4c is set as the fitting region . At this time, the imaged guide image 21 can be acquired by deleting the set embedding area. At this time, a part of the inverted mold groove 54a may be exposed so that the embedding area is erected.

On the other hand, the height of the crown c is set based on the three-dimensional occlusion guide image 15, and the height of the crown c is set on the basis of the three-dimensional occlusion guide image 15 and the imitation guide image 21, Design and three-dimensional printing. At this time, the double guide 60 includes a first guide 60a and a second guide 60b (S300).

In detail, the three-dimensional occlusion guide image 15 includes three-dimensional outer shape information provided from the integrated scanning image 13 and three-dimensional inner information provided from the CT image 14. In this case, the three-dimensional outer shape information means outer shape information such as a vertical height, a chewing surface shape, a gum, and the like, and the three-dimensional inner information is preferably understood as internal organization information such as a bone shape and a bone density.

The crown c is designed to correspond to the vertical height based on the three-dimensional occlusion guide image 15, and the vertical height can be easily calculated from the integrated scanning image 13.

In detail, the height of the crown c on the image can be calculated by integrating the vertical height obtained from the integrated scanning image 13, the chewing surface shape of the opposing tooth t, the contour information of the upper and lower jaws, .

That is, since the length between the end of the to-be-placed object part and the end of the opposing tooth t and the shape outside shape information of the opposing tooth t are included in the integrated scanning image 13, the height of the crown c And the chewing surface shape can be easily calculated. Furthermore, the placement direction and position of the object can be easily set by marking the placement state and position of the artificial abdomen 51 before erasing the occlusion scanning image.

That is, in the image matching step, which is performed stepwise before the production of the double guide, the clasp height suitable for the subject can be calculated and it is possible to manufacture an accurate crown (c) based on this. This minimizes re-design and re-installation due to incorrect crown (c), minimizing waste of time and cost consumed in the procedure, and enabling efficient and quick procedures.

Furthermore, it is possible to design and manufacture a crown (c) of a height capable of maximizing the satisfaction of the subject while acquiring the three-dimensional occlusion guide image (15), and a double guide (60). Thus, it is possible to provide an implant base device capable of completing the fixture placement and the installation of the abutment / crown (c) in a short period of time by a single operation.

On the other hand, the first guide 60a has a fixing groove portion formed in the tooth placement target portion on the basis of the imitation guide image 21, and an opening 65 corresponding to the erected mounting region is formed. The second guide 60b is formed into a three-dimensional shape so as to be connected to the opening 65, and a guide hole 61 is formed along the positioning position of the fixture.

At this time, the first guide 60a can be easily manufactured on the basis of the denture 50 made to be substantially in conformity with the tooth placement target portion, and the shape synthesis with the tooth placement target portion is improved, The reliability of the procedure can be remarkably improved.

The second guide (60b) formed in the guide hole (61) is seated on the opening (65) formed by erasing the mounting region in a detachable manner along the fixture mounting position. As a result, the abutment and the crown can be continuously engaged without separating the first guide 60a only by separating the second guide 60b after placing the fixture.

In addition, since the shape of the artificial abdomen 51 around the opening 65 is three-dimensionally printed, the first guide 60a can fasten the crown c and can easily grasp the positional relationship with surrounding teeth The convenience of the procedure can be remarkably improved.

At this time, alignment protrusions for guiding alignment alignment and alignment alignment grooves may be formed on the mutually facing surfaces of the second guide 60b and the opening 65 of the first guide 60a. Accordingly, since the second guide 60b can be substantially fixed integrally with the first guide 60a, the reliability of the placing position of the object to be placed along the guide hole 61 can be further improved have.

In addition, the alignment piece 70 may be provided so that the first guide 60a to which the second guide 60b is coupled is firmly fixed to the outside of the tooth placement target portion. The alignment piece 70 supports a space between the denture 50 and the opposed tooth t when the upper and lower malleusing teeth are engaged with the denture 50 to guide the occlusion position, . The molded parts 72a and 72b are formed on the outer surface of the body part 71 so as to be inverted so that the end shapes of the denture 50 and the opposing teeth t are solidified.

At this time, the alignment piece 70 can be manufactured by injecting a curable pulling-up resin between the upper and lower mandibles provided with the denture 50. In detail, a putty capable of freely deforming the curable pulling-up resin or the pre-hardening shape is injected between the denture 50 and the opposing tooth (t) provided outside the tooth placing part. When the injected pulling resin is cured, the body portion 71 is formed to support a space between the denture 50 and the opposing tooth t.

The curable pulling-up resin is injected so as to cover the ends of the artificial abutment 51 of the denture 50 and the ends of the opposing teeth t, (72a, 72b) can be formed. At this time, the curable pulling-up resin easily separates from the denture 50 and the opposed tooth t, but the tooth ends of the denture 50 and the opposed tooth t are caught in the protruding portions 72a and 72b It is preferable to be injected so as to cover the position so as to be able to restrain it.

The alignment piece 70 manufactured as described above can be utilized when the first guide 60a is installed outside the tooth placement target portion. Specifically, the first guide 60a is provided on the tooth placing part 30, and the aligning piece 70 is disposed between the upper side of the first guide 60a and the opposing tooth t . At this time, if only the end of the first guide 60a and the end of the opposing tooth t are restrained to the molded parts 72a and 72b formed on the outside of the alignment piece 70, (60a) can be aligned at a desired position of the tooth placement target portion. The first guide 60a can be firmly fixed to the tooth placing part by fastening the fixing pin, which has an end on the side surface of the first guide 60a aligned as described above, to the gum .

That is, since the first guide 60a is manufactured substantially on the basis of the outer shape of the denture 50, the shape of the mating portion formed on the outer side of the alignment piece 70, the opposing tooth t and the first guide 60a, The peripheral tooth shapes formed on the upper side may correspond to each other.

Accordingly, the first guide 60b can be precisely aligned and firmly fixed to a desired position according to the implant procedure plan by using the alignment piece 70 manufactured using the dent 50, To the correct position.

On the other hand, the shape and the arrangement state of the crown are set based on the three-dimensional occlusion guide image 15 including the shape information of the artificial abdomen 51 of the denture 50 obtained from the primary scanning image 11 do. The guide hole 61 of the second guide 60b may be set based on the placement position of the fixture, which is set based on the shape and the arrangement state of the crown.

In detail, the denture 50 is prepared considering the information on the vertical height, the shape of the chewing surface, and the arrangement of the teeth so that the discomfort during chewing after the installation is minimized.

Accordingly, the three-dimensional occlusion guide image including the primary scanning image 11 obtained by scanning the inner surface and the outer surface of the denture 50 includes the information . That is, the shape of the crown, the position and direction of the crown can be calculated and designed from the external information of the artificial abdomen 51 of the denture 50 and the contour information of the confrontation tooth t.

Further, the fixture mounting direction is calculated according to the placement position and direction of the crown, and the guide hole 61 can be easily set based on the calculated fixture mounting direction.

That is, overall information for the implant operation can be received from the primary scanning image 11 obtained by scanning the inner and outer surfaces of the denture 50 used by the client. At this time, since the position where the implant is placed is provided from the scanned image of the denture in which the vertical height, the shape of the chewing surface, and the arrangement of the teeth are already taken into account, a double guide and a product with a remarkably improved precision can do. In addition, the time required for the preparation and the procedure for the implant procedure is remarkably shortened, so that the discomfort of the practitioner and the physician can be remarkably solved.

On the other hand, the mold recess 54 may be corrected to a profile formed corresponding to the tooth placement target portion formed on the curable resin by providing the dent 50 having the inner surface coated with the curable resin on the tooth placement target portion . That is, since the gap that can be formed between the mold groove 54 and the tooth placement target portion is filled with the curable resin, the reliability of the image obtained by scanning the denture can be further improved. have.

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

11: Primary scanning image 12: Secondary scanning image
13: Integrated scanning image 14: CT image
15: Three-dimensional bite guide image 21: Imitation guide image
30: tooth placement target portion 40: reference markers
50: Denture 51: artificial abdomen
52: Gum coupling part 54: Mold joint
60: double guide 60a: first guide
60b: second guide 61: guide hole
70: alignment piece 4: boundary point
c: Crown t: Clam tooth

Claims (5)

And a second scans obtained by scanning the denture with a plurality of reference markers attached to the outer side and the upper and lower dentures installed with the denture, A first step of acquiring an integrated scanning image in which an image is preliminarily matched with an image of the mold groove so that the image of the mold groove is solidified to consider the vertical dimension and the CT image of the upper and lower jaws to obtain a CT image;
The method according to any one of claims 1 to 3, wherein the 3D scan image is obtained by integrating the integrated scan image and the CT image with reference to the reference marker, A second step of setting and erasing the embedding area based on the acquired imitation guide image, and a virtual step disposed outside the inverted embedding image so that the obtained imitation guide image is stereoscopically formed; And
A first guide having a fixing groove formed on the tooth placing part based on the imitation guide image and an opening corresponding to the erected mounting area, And a third step of designing and three-dimensionally printing a double guide including a second guide having a guide hole formed along the fixture mounting position, wherein the embedding region is solidified so as to be connected to the opening, And a method for manufacturing an implant. The method according to claim 1,
In the second step, the disposing area includes a plurality of boundary points along a boundary between the artificial tooth of the denture corresponding to the placement position of the implant and the peripheral artificial abdomen adjacent to the artificial teeth of the denture corresponding to the placement position of the implant Select input,
And calculating a closed surface including a connecting line between each boundary point and another adjacent boundary point. The method according to claim 1,
Wherein the second guide and the opening of the first guide are designed such that an alignment protrusion for guiding the alignment and an alignment groove are formed to be opposed to each other on the mutually facing surfaces of the second guide and the opening of the first guide. Water. The method according to claim 1,
In the third step, the shape and the arrangement state of the crown are set based on the 3D guide image including the artificial tooth shape information of the denture obtained from the primary scanning image,
Wherein the guide hole of the second guide is set based on a position of the fixture that is set based on a shape and an arrangement state of the crown. The method according to claim 1,
In order to guide the occlusion position by supporting the space between the denture and the opposed teeth at the time of occlusion of the upper and lower teeth with the denture in the first step, the end face of the denture and the opposed tooth is inverted Wherein the step of acquiring the alignment piece includes the step of obtaining the alignment piece in which the molded part is formed.

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