KR20220025411A - image data processing method for implanting of dental restoration - Google Patents

Abstract

The present invention relates to an image data processing method for implanting dental restoration to increase dental restoration reliability. According to the present invention, the method comprises: a first step of overlapping and matching a scanning image including 3D external shape information of the gum to be restored with a CT image including alveolar bone information on the basis of a preset occlusal plane; a second step of virtually arranging a plurality of virtual implants selected and extracted from a digital library along the dental arch so that each upper end thereof is aligned with a first reference plane spaced apart from the occlusal plane corresponding to a predetermined vertical dimension; a third step of extracting one erasing model matching the gum part to be restored among a plurality of erasing models standardized in a semi-cylindrical shape corresponding to the anatomical dentition and stored in the digital library; a fourth step of virtually arranging the extracted removal model to allow one side to match the occlusal plane and allow the other side to match the first reference plane, and erasing an overlapping part of the 3D external shape information of the gum part to be restored and the removal model to swap and correct the upper surface side of the 3D external shape information of the gum part with a virtual flat surface; and a fifth step of setting design information of a flattening guide and surgical guide, which guide a tool for alveolar bone flattening and implant placement on the basis of the 3D external shape information of the gum part to be restored, and the dental restoration.

Description

Image data processing method for implanting of dental restoration

The present invention relates to an image data processing method for dental restoration implantation, and more particularly, to an image data processing method for dental restoration implantation in which dental restoration reliability is improved.

In general, a denture or a prosthesis is a dental restoration that artificially restores an appearance and function by replacing a missing natural tooth. At this time, the dentures or prostheses can be installed inside the oral cavity to restore the masticatory function and prevent periodontal tissue deformation, and can be divided into partial/complete dentures and partial/complete prostheses according to the number of missing teeth.

On the other hand, the denture is installed by applying a dental adhesive to the inner surface-side mold groove to be adhered to the surface of the gum. For this reason, there was a problem of causing a foreign body feeling and pain because direct occlusal pressure is applied to the gums. On the other hand, the prosthesis is fixed to a fixture to be placed in the alveolar bone, thereby reducing the feeling of foreign body and pain in the gums due to occlusal pressure. However, there is a problem in that the prosthesis is substantially permanently fixed and difficult to manage. Accordingly, an overdenture that compensates for the shortcomings of the denture and the prosthesis has been disclosed.

In detail, since the overdenture is detachable from the oral cavity like the denture while being fixed to a fixture to be placed on the alveolar bone like the prosthesis, it is easy to manage such as cleaning. In this case, the overdenture includes a coupling means selectively coupled to the abutment fixed to the fixture.

Here, the conventional coupling means is provided as a ball type that is individually matched to the implanted and fixed implants spaced apart along the dental arch of the alveolar bone, or is provided as a bar type passing through the implants. In this case, it is preferable to understand that the implantation includes a fixture and an attachment/abutment.

At this time, the ball-type coupling means has a structure in which the upper end of the attachment fastened to each of the fixtures is individually coupled to the fixing part formed on the inner surface of the overdenture, and thus the positional precision between each attachment and each fixing part is required. That is, if any one of the coupling means is not aligned at the correct position, there is a problem that the overdenture cannot be installed accurately.

And, the bar-type coupling means is fixed via a fixing bar along the abutment fastened to each of the fixtures, the upper end of the abutment and the coupling groove into which the fixing bar is inserted is formed on the inner surface of the denture. Accordingly, there is an advantage that the bar-type coupling means is easier to mount the overdenture in the oral cavity than the ball-type coupling means.

At this time, the fixing bar is provided bent corresponding to the placement position of the implant to pass through a plurality of the implants previously implanted in the alveolar bone, and after bending, deformation due to external forces such as masticatory pressure can be minimized. It is made of metal material. Therefore, in order for the fixing bar to be firmly fixed to each of the implants, the height of each of the implants must be uniformly aligned, and for this purpose, a flattening operation of the alveolar bone is required. Moreover, the vertical diameter is different for each recipient who requires dental restoration, and the amount of cutting of the alveolar bone is determined in response to the vertical diameter.

However, in the prior art, the operator cut / flattened the alveolar bone based on the experience value, and for this reason, when the amount of cutting is too large or small, the occlusion between the opposing tooth and the overdenture is undesirable, and there is a problem that the discomfort is increased. In addition, there was a problem in that the flattened outer surface of the alveolar bone could not be precisely formed to correspond to the height at which the fixture was placed, so that the fixing bar could not be firmly fixed.

Meanwhile, in the prior art, the overall dental restoration plan including the placement position of the implant and the design of the overdenture is designed based on the CT image including information such as the outer surface and density of the alveolar bone of the recipient.

At this time, in the case of a CT image, it is easy to obtain information on the alveolar bone, but it is difficult to obtain information on the gum, which is a soft tissue. In addition, there was a problem in that it was difficult to use the CT image data in the design of each device for guiding the actual overdenture and implantation. That is, it takes too much time to convert the CT image into an STL file that is easy to 3D print or mill the overdenture and various guide devices. In addition, as the manufacturing time of various guide devices and a series of implanting processes using the manufactured guide devices, that is, processes such as alveolar bone cutting and fixture placement, take a long time, the overall period of dental restoration increases, increasing inconvenience There was a problem being

Korean Patent Registration No. 10-1694475

In order to solve the above problems, an object of the present invention is to provide an image data processing method for dental restoration implanting in which dental restoration reliability is improved.

In order to solve the above problems, the present invention provides a first step in which the scanning image including the three-dimensional external information of the gum part to be restored is overlapped and matched with the CT image including the alveolar bone information based on a preset occlusal plane; a second step of placing a plurality of virtual implants selected and extracted from a digital library along the dental arch so that their upper ends are aligned on a first reference plane spaced apart from the occlusal plane in correspondence to a predetermined vertical height; a third step of extracting one erased model matching the restoration target gum portion from among the plurality of erased models standardized into a semi-cylindrical shape corresponding to the anatomical dentition in the digital library; One surface of the extracted model to be erased matches the occlusal plane and the other surface is virtually arranged to match the first reference plane, and the overlapping part of the three-dimensional appearance information of the restoration target gum part and the erase model is erased, so that the restoration target gum part a fourth step of swap-correcting the upper surface side of the three-dimensional appearance information to a virtual flat surface; And a flattening guide and surgical guide for guiding an instrument for alveolar bone planarization and implant placement based on the three-dimensional external information and the virtual flat surface of the restoration target gum portion, and a fifth step of setting design information of the dental restoration It provides an image data processing method for dental restoration implantation.

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

First, the implantation information is accurately set based on the CT image showing the cross-section of the oral cavity, but the image data for the actual design is the 3D of the implanting guide device based on the scanning image and virtual data, which are surface data. Since it is easy to convert to a printable STL file, the image manipulation and design process can be significantly shortened.

Second, the position of the virtual implant and virtual sleeve device in consideration of the patient's occlusal plane and vertical diameter is first considered, and then the virtual flat surface is set to accurately guide the dental restoration and its implantation with improved occlusal precision with the opposing teeth. The precision of the design information of the implanting guide device can be significantly improved.

Third, as the position of the virtual flat surface, which is the standard for flatness and cutting of the alveolar bone, is corrected by considering the clearance gap for interference with the alveolar bone when the surgical guide is installed, the actual surgical guide responds to the preset implantation information. Since it is designed to guide, implantation precision can be further improved.

1 is a flowchart of an image data processing method for dental restoration implantation according to an embodiment of the present invention.
2 is an exemplary view showing a three-dimensional planning image set according to an embodiment of the present invention.
3 is an exemplary diagram illustrating a process in which a virtual sleeve device is virtually disposed according to an embodiment of the present invention.
4 is an exemplary view showing a process of setting a virtual flat surface according to an embodiment of the present invention.
5 is an exemplary view showing design information of an implanting guide device set according to an embodiment of the present invention.
6 is an exemplary view showing a modified example of a process for setting a virtual flat surface according to an embodiment of the present invention.

Hereinafter, an image data processing method for dental restoration implantation according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

On the other hand, implanting is understood to encompass a series of processes for not only placing an implant (hereinafter, referred to as a fixture) in the alveolar bone, but also manufacturing the final dental restoration and mounting it on the upper side of the implanted fixture. desirable. At this time, the dental restoration designed and manufactured by the image data processing method of the present invention is an overdenture that is detachably mounted from the oral cavity through the holder device fixed to the upper side of the fixture, including the holder abutment and the fixing bar. It is desirable to understand

And, it is preferable to understand that the restoration target gum part to be described below is a jaw that requires dental restoration through the overdenture, and in the present invention, it is described and illustrated as a mandible in which the molars remain. In addition, the opposing arch or the opposing side, which will be described below, is preferably understood as the jaw that occludes the restoration target gum portion, and in the present invention, it is described and illustrated as the maxilla, which is the deciduous jaw. Of course, in some cases, the present invention may be an edentulous or partially edentulous maxilla and/or a partially edentulous jaw, and the same can be applied to the overdenture design process when the maxilla and/or mandible become deciduous jaws but require restoration after tooth extraction. .

It is preferable to understand that the implanting guide device to be described below includes a planarization guide and a surgical guide. The flattening guide is a device for cutting and flattening the upper end of the alveolar bone in accordance with the implantation height of the fixture in consideration of the vertical height between the overdenture and the opposing tooth, and the height of the holder device to which the overdenture is mounted. It is desirable to understand In addition, the surgical guide is preferably understood as a device for guiding the fixture to be implanted in the correct placement position and direction in the cut and flattened alveolar bone.

1 is a flowchart of an image data processing method for dental restoration implantation according to an embodiment of the present invention, and FIG. 2 is an exemplary view showing a three-dimensional planning image set according to an embodiment of the present invention.

1, the image data processing method for dental restoration implantation according to the present invention is scanning image and CT image registration (s110), virtual implant virtual placement (s120), erasing model extraction (s130), virtual flat surface It includes a series of steps such as swap correction (s140) and design information setting (s150) of the implanting guide device and the dental restoration.

Referring to FIG. 2 , the three-dimensional planning image M includes a scanned image obtained by including three-dimensional external information of the upper and lower jaws of which at least one side is a restoration target.

In detail, the scanning image is preferably obtained by scanning the surface of the oral cavity or impression model. The scanning image includes an image (m2) of the restoration target gum part including three-dimensional external information of the restoration target gum part and an occlusal side image (m3) including three-dimensional external information on the opposing side, and the restoration target gum part The image m2 and the occlusal side image m3 may be acquired, respectively, and virtual occlusal alignment may be performed based on a preset occlusal plane op. Through this, the upper and lower jaw images may be virtually arranged in correspondence to the patient's vertical height. And, the CT image m1 is obtained by using the CT imaging device of the patient's head, and includes information on the internal tissue covered by the gum tissue.

The scanning image and the CT image m1 are matched based on a common part, and through this, the three-dimensional planning image M can be generated. Here, the mutually common part may be the outer surface of the remaining teeth or the outer surface of the silk tissue in which the flow is minimized without being covered by the gum tissue, such as between the teeth.

Alternatively, when at least one side is edentulous, the scanning image and the CT image m1 are acquired after attaching a reference marker, and the reference marker image displayed in the same part of each image can be set as a common part to match. . In this case, it is preferable that the reference marker is attached to the lower side that is spaced apart from the upper end of the alveolar bone as much as possible in consideration of the height of the alveolar bone preparation.

Accordingly, the three-dimensional planning image M includes three-dimensional external information of the restoration target gum portion and the opposing side included in the scanning image, upper and lower jaw bone and residual teeth, and lower teeth included in the CT image m1. Internal tissue information such as the manic nerve (K) can be displayed at the same time. At this time, the restoration target gum image (m2), the opposing side image (m3), and the CT image (m1) are matched and displayed overlaid on the basis of the common part, but each image can be individually modified, and each image is optional It can be manipulated to be displayed as or blink.

A first reference plane L1 spaced apart from the occlusal plane op to correspond to a predetermined vertical height is set. Then, the virtual implant (mf) previously stored in the digital library, which is a storage of image data for designing a dental restoration, is selectively extracted and virtually placed along the dental arch.

In detail, the digital library is connected to a planning unit in which the scanning image and the CT image m1 are loaded and displayed, and the three-dimensional planning image M is generated and each design information is set through wired/wireless communication. That is, image data acquired through a scanner or CT imaging device and image data stored in the digital library are loaded into the planning unit to establish an overall plan for dental restoration, and design information of each implanting guide device and the overdenture is provided. can be obtained.

Moreover, the virtual implant mf is preferably virtually arranged so that the position of the upper end is matched to the first reference plane L2, and is virtually arranged at a position corresponding to the preset placement information A. The implantation information (A) is preferably set to at least one or more plural, and preferably set to 4 anterior teeth or 2 anterior and 2 posterior so that the final dental restoration is stably mounted and supported. The implantation information (A) is preferably set based on the alveolar bone information included in the CT image (m1).

In addition, the virtual tooth m61 may be virtually disposed on the restoration target gum portion image m2 in response to the vertical height. The virtual tooth m61 is three-dimensional external information about the artificial tooth part of the overdenture, and it is preferable to set standardized three-dimensional vector data based on the average value of each tooth calculated in consideration of anatomical deviations by gender and age. Do. The virtual tooth m61 is preferably set as standardized three-dimensional vector data based on the average value of each tooth calculated in consideration of anatomical deviations by gender and age. In addition, the virtual tooth m61 may be pre-stored as standardized as a single size, or may be pre-stored as divided into large/medium/small. In addition, it is preferable that three-dimensional external information for each artificial tooth corresponding to each tooth is individually set and stored as set along the dental arch. That is, the virtual teeth m61 may be simultaneously selected in a state in which a plurality of tooth images for any of the upper and lower jaws are arranged along the dental arch, and may be virtually placed on the three-dimensional planning image M. In this case, the virtual tooth m61 may be manipulated to selectively delete unnecessary tooth images from among each tooth image.

3 is an exemplary diagram illustrating a process in which a virtual sleeve device is virtually disposed according to an embodiment of the present invention. At this time, it is preferable to understand that the virtual sleeve device includes a virtual implantation guide sleeve and a virtual fixed guide sleeve to be described later.

2 to 3 , a virtual implant mf selected from the digital library based on the alveolar bone information included in the CT image m1 is virtually disposed in response to the implantation information A. In addition, the virtual implantation guide sleeve m51, which is spaced apart from the upper end of the virtual implant mf and virtually arranged concentrically, is superimposed on the scanning image and stored.

The virtual implant mf is preferably understood as three-dimensional external information about a real fixture. In addition, the virtual implantation guide sleeve m51 is three-dimensional external information of a guide sleeve coupled to a surgical guide 50 to be described later to guide the actual placement of the fixture, and the virtual implant mf and It can be pre-stored as a set. It is preferable that an offset distance (w3 in FIG. 6 ) of the virtual implant guide sleeve m51 is set according to the standard of the virtual implant. Here, it is preferable that the offset distance (w3 in FIG. 6) be understood as a spaced distance between the upper end of the fixture and the upper end of the guide sleeve. The offset distance (w3 in FIG. 6 ) is set in consideration of an adjacent residual value or interference with the virtual implantation guide sleeve m51.

At this time, it is preferable that the virtual implantation guide sleeve m51 is set as a set with the virtual coupling part m50a, which is three-dimensional external information of the coupling part included in the surgical guide. The virtual coupling part m50a includes a virtual coupling hole m53 to which the virtual implantation guide sleeve m51 is virtually coupled. The virtual coupling hole m53 includes a coupling hole to which an actual guide sleeve is coupled, and 3D external information about a coupling groove in which a protrusion of the guide sleeve is rotationally coupled in the coupling hole.

In addition, in response to the anchor pin information (D) set in consideration of the implantation information (A) and the lower alveolar nerve (K), the virtual fixed guide sleeve (m55) is virtually arranged. The virtual fixed guide sleeve m55 is preferably integrated and stored in the scanning image, preferably the restoration target gum image m2, together with the virtual implantation guide sleeve m51. At this time, since the virtual fixed guide sleeve m55 has substantially the same configuration as the virtual implantation guide sleeve m51 except for size and location, a detailed description thereof will be omitted.

The virtual implantation guide sleeve m51 and the virtual fixed guide sleeve m55 are superimposed on the scanning image and integrated and stored, and then can be used as design information of the implanting guide device to be described later through a series of processes. At this time, since the virtual implantation guide sleeve (m51) and the virtual fixed guide sleeve (m55) are set and stored in advance with the virtual coupling part (m50a), the design process of the surgical guide 50 is quick and simplified, so manufacturing Convenience can be significantly improved.

Here, the process of erasing and correcting the inner image of the temporary deletion line m2a preset in the restoration target gum image m2 may be further included. For example, when a large amount of the shape of the remaining teeth is included in the restoration target image m2 or the virtual sleeve device is excessively obscured by the restoration target gum image m2, such image deletion correction may be performed. . Through this, the virtual implantation guide sleeve m51 and the virtual fixed guide sleeve m55 can be displayed so that the superimposed state on the scanning image can be visually and clearly recognized, so that design convenience can be further improved.

As such, in the present invention, the implantation information (A) is accurately set based on the CT image (m1) in which the cross-sectional image of the oral cavity is displayed as a whole, and the image data required for design includes only the surface data of each object. is set based on the scanning image and virtual data. That is, according to this, it is easy to convert the implanting guide device, which will be described later, into an STL file that can be manufactured by rapid 3D printing, and the overall design and manufacturing process can be performed quickly.

4 is an exemplary diagram illustrating a process of setting a virtual flat surface according to an embodiment of the present invention, and FIG. 5 is an exemplary diagram illustrating design information of an implanting guide device set according to an embodiment of the present invention . In this case, the three-dimensional external information of the gum part to be restored is preferably understood to have the same meaning as the image m2 of the restoration target gum part, and is described and illustrated with the same number.

Referring to FIG. 4 , a single erasing model m30 matching the restoration target gum portion is extracted from the digital library. The erasure model m30 is standardized into a semi-cylindrical shape corresponding to the anatomical dentition and stored in the digital library. At this time, the rounded portion of the erasing model m30 corresponds to the mesial surface of the oral cavity, and the vertical surface side corresponds to the distal surface of the oral cavity.

In the erasure model m30, a horizontal reference plane m31 matching the occlusal plane op may cross the central portion or may be set on the other surface (upper surface in the drawing). For example, when the upper and lower teeth are restored at the same time, the horizontal reference plane m31 is set along the center of the erasing model m30. It can be set on the other surface of (m30). In addition, at least one surface m33 corresponding to the restoration target image m2 side is a second reference plane spaced downward from the first reference plane L1 corresponding to the upper end of the virtual implant by a preset clearance w1. Virtually adjusted to correspond to (L2). The distance h between the horizontal reference plane m31 and the one surface m33 may be virtually adjusted in consideration of the patient's vertical height and tooth restoration plan.

Virtual arrangement so that the other surface of the erasing model m30 extracted from the digital library, that is, the horizontal reference plane m31 matches the occlusal plane op, and the one surface m33 matches the first reference plane L1 do. In this case, the overlapping portion of the restoration target image m2 and the erasing model m30 is erased, and the upper end of the restoration target gum image m2 is swapped to the virtual flat surface E. This virtual flat surface (E) is used as design information of the flattening guide to be described later, and through this, the height of the bone preparation of the upper end of the alveolar bone is set corresponding to the vertical height of the patient and the overdenture designed based on it. can

On the other hand, the other surface of the erasing model (m30) so that the actual surgical guide manufactured based on the design information (m50) of the surgical guide and the flattened outer surface of the alveolar bone are spaced apart by a preset clearance gap (w1) (m33) is virtually adjusted to correspond to the second reference plane L2 that is spaced downward from the first reference plane L1. Through this, the virtual flat surface E is virtually corrected to correspond to the second reference surface L2.

Here, it is preferable that the clearance distance w1 is set in consideration of the position and the arrangement angle of the lower end of the virtual implantation guide sleeve m51 protruding downward based on the first reference plane L1. That is, the three-dimensional external information of the virtual implantation guide sleeve m51 or the virtual coupling part m50a protruding below the first reference plane L1 is taken into consideration, and the clearance distance w1 may be set. Through this, interference between the inner structure of the surgical guide and the flattened upper surface of the alveolar bone can be prevented in advance when the actual surgical guide is mounted in the oral cavity and the implantation of the fixture is guided. Through this, since the fixture is accurately placed in response to the implantation information (A) set based on the three-dimensional planning image (M), implanting precision can be significantly improved.

In detail, referring to FIG. 5 (a), the design information (m50) of the surgical guide is the inner contour is formed based on the image (m2) of the restoration target gum portion, the virtual implantation guide sleeve (m51) It is set including the step of forming the virtual coupling hole (m53) corresponding to the outer periphery of. And, as the design information m50 of the surgical guide is transmitted to a manufacturing apparatus such as a 3D printer, the actual surgical guide is manufactured.

In detail, the virtual body part is formed by protruding or spaced apart from the restoration target gum image m2 at a predetermined thickness or interval. In addition, the virtual implantation guide sleeve m51 and the virtual coupling part m50a integrated and stored in the scanning image are virtually disposed above the virtual body part. In addition, design information of a piece fixing part to which an anchor pin can be fixed based on the virtual fixing guide sleeve m55 superimposed on the scanning image and stored may be included in the design information m50 of the surgical guide.

Here, the virtual coupling hole m53 is included in the virtual coupling part m50a pre-stored as a set with the virtual implantation guide sleeve m51. Accordingly, the virtual coupling hole m53 can be immediately set in the design information m50 of the surgical guide without a separate complicated design process.

Referring to Figure 5 (b), the design information (m40) of the flattening guide is the step of forming an inner contour based on the three-dimensional external information (m2) of the restoration target gum portion, and the virtual flat surface (E) ) and the design information m41 of the flat guide surface is set along the rim that is opened at a position corresponding to the forming step. And, as the design information m40 of the planarization guide is transmitted to a manufacturing apparatus such as a 3D printer, a real planarization guide is manufactured.

In detail, the virtual body portion is formed by protruding or spaced apart from the inner and outer surface surface information of the gum corresponding to the lower side based on the virtual flat surface E in the restoration target gum portion image m2 at a predetermined thickness or interval. At this time, the upper side of the virtual body portion based on the virtual flat surface (E) is set to be opened. Then, the design information m41 of the flat guide surface is set along the upper edge of the virtual body that matches the outer edge of the virtual flat surface E. As shown in FIG. In addition, based on the virtual fixed guide sleeve m55 superimposed on the scanning image, design information of a piece fixing part to which an anchor pin can be fixed may be included in the design information m40 of the flattening guide.

That is, the surgical guide and the planarization guide are designed based on the substantially identical image data of the restoration target gum portion image (m2) and the anchor pin information (D), and based on the virtual flat surface (E) The design information m41 of the flat guide surface or the location of the virtual coupling hole m53 is set. Accordingly, the contour of the inner surface of the finally manufactured flattening guide and the surgical guide and the position of the piece fixing part may be set to be substantially the same. Through this, since the mounting positions are substantially identical to each other in the process of mounting the surgical guide 50 after separating the planarization guide, implanting precision can be significantly improved.

Furthermore, in the planarization guide, the design information m41 of the flattening guide surface is based on the second reference surface L2 so that the clearance gap for interference between the cut and flattened upper end of the alveolar bone and the actual surgical guide is taken into account. is set to Therefore, in a state in which the actual surgical guide is mounted on the alveolar bone, the inner surface portion to which the guide sleeve is coupled may be spaced apart from each other while being molded and fixed along the side surface of the alveolar bone. Through this, the implantation precision can be remarkably improved because an implantation error that occurs when the surgical guide is not mounted in an accurate position is prevented in advance.

6 is an exemplary diagram illustrating a modified example of a process for setting a virtual flat surface according to an embodiment of the present invention. At this time, since the basic configuration except for the virtual abutment in the present modification is the same as the above-described embodiment, a detailed description of the same configuration will be omitted.

Referring to FIG. 6 , the removal model m30 may be virtually disposed based on a matching virtual abutment m14 corresponding to the offset distance w3 of the virtual implantation guide sleeve m51 . The virtual abutment m14 is virtually disposed between the virtual implantation guide sleeve m51 and the virtual implant spaced apart in consideration of the offset distance w3. Preferably, the lower surface of the virtual abutment m14 is formed in a cylindrical shape that matches the upper end of the virtual implant, and the height w2 may be set according to the offset distance w3. For example, when the offset distance is 9 mm, the length of the virtual abutment may be set to 4.5 mm, if the offset distance is 10.5 mm, it may be set to 6 mm, and when the offset distance is 12 mm, it may be set to 7.5.

In addition, it is preferable that one surface m33 of the erasing model m30 is virtually corrected to correspond to the second reference surface L2 set corresponding to the position of the lower surface of the virtual abutment m14. That is, the erasing model m30 is virtually arranged in consideration of the position of the upper end of the holder abutment coupled to the upper end of the actual fixture. Through this, since the cutting and flattening height of the alveolar bone is more preferably set, it is possible to prevent in advance the problem of a decrease in precision due to the interference between the oral-to-device or device-to-device in the implanting process to be described later.

Furthermore, the cutting and flattening range/position of the alveolar bone is set based on the virtual implant and the virtual implantation guide sleeve m51 that is virtually placed as a set. That is, the cutting and flattening height of the alveolar bone may be set after first considering the height of the overdenture mounted through the holder device and the holder device. Through this, the occlusal precision between the overdenture and the opposing tooth to be finally manufactured and mounted in the oral cavity is improved, and the discomfort during mastication is minimized, so that the satisfaction of dental restoration 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.

M: Planning image m2: Gum image to be restored
m3: contralateral image m14: virtual abutment
m30: erasing model m40: virtual holder device
m51: virtual placement guide sleeve E: virtual flat surface

Claims (5)

a first step of overlapping and matching a scanning image including three-dimensional external information on the restoration target gum part with a CT image including alveolar bone information based on a preset occlusal plane;
a second step of arranging a plurality of virtual implants selected and extracted from a digital library along the dental arch so that their upper ends are aligned on a first reference plane spaced apart from the occlusal plane in correspondence to a predetermined vertical height;
a third step of extracting one erased model matching the restoration target gum portion from among the plurality of erased models standardized into a semi-cylindrical shape corresponding to the anatomical dentition in the digital library;
One surface of the extracted model to be erased matches the occlusal plane and the other surface is virtually arranged to match the first reference plane, and the overlapping portion of the three-dimensional external information and the erasure model of the restoration target gum part is erased, so that the restoration target gum part a fourth step of swap-correcting the upper surface side of the three-dimensional appearance information to a virtual flat surface; and
A flattening guide and a surgical guide for guiding an instrument for alveolar bone planarization and implant placement based on the three-dimensional external information and the virtual flat surface of the restoration target gum part, and a fifth step of setting design information of the dental restoration Image data processing method for dental restoration implantation. The method of claim 1,
The second step includes the step of integrating and storing a virtual implantation guide sleeve, which is virtually arranged concentrically on the upper side of the upper end of the virtual implant, in the scanning image,
In the fifth step, the inner contour is formed based on the three-dimensional external information of the gum part to be restored, and the design information of the surgical guide in which a virtual coupling hole corresponding to the outer periphery of the virtual implantation guide sleeve is formed is generated. Image data processing method for dental restoration implantation comprising the step. 3. The method of claim 2,
The fourth step is
The other surface of the erasing model is spaced downward from the first reference surface so that the outer surface of the alveolar bone, the inner surface of which is flattened, is spaced apart by a preset clearance interval of the surgical guide, which is manufactured based on the design information of the surgical guide. Virtually adjusted to correspond, and
The image data processing method for dental restoration implantation, characterized in that it comprises the step of virtual correction in correspondence with the second reference plane of the virtual flat surface. 4. The method of claim 3,
In the fifth step, an inner contour is formed based on the three-dimensional external information of the gum part to be restored, and an overlapping portion of the erased model is erased and an rim opened at a position corresponding to the virtual corrected virtual flat surface. Image data processing method for dental restoration implanting, characterized in that it further comprises the step of generating design information of the planarization guide on which the flattening guide surface is formed. 3. The method of claim 2,
The fourth step is
Virtually arranging a matching virtual abutment corresponding to the offset distance of the virtual implantation guide sleeve;
The image data processing method for implanting a dental restoration, comprising the step of virtual correction corresponding to the second reference plane set corresponding to the lower surface of the virtual abutment the other surface of the erase model.

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