Methods of implanting dental restorations

Abstract

This invention provides a method for implanting a dental prosthesis, comprising: a first step of setting multiple implantation information along the dental arch in a three-dimensional planning image; a second step of flattening the alveolar bone and implanting the dental implants, and fixing a support device including a support abutment and a fixing rod to the upper side of the dental implants; a third step of modifying a temporary prosthesis to form a temporary mounting portion for inserting the support device on the inner surface of the temporary prosthesis; a fourth step of acquiring a modified scan image from the modified temporary prosthesis scan image in which the three-dimensional shape information of the temporary mounting portion is exposed externally, and exchanging the three-dimensional shape information of the temporary mounting portion with the virtual support device; and a fifth step of fixing the artificial tooth portion to the artificial gingiva to manufacture the final dental prosthesis, wherein the artificial gingiva portion has a mounting portion formed based on the virtual support device and is fixed with clips.

Description

Technical Field

[0001] This invention relates to a method for implanting a dental prosthesis, and more specifically, to a method for implanting a dental prosthesis that improves the reliability of dental restorations. Background Technology

[0002] Generally, dentures or dental prostheses are artificial dental restorations that replace damaged natural teeth, restoring their shape and function. These dentures or prostheses are placed inside the oral cavity to restore chewing function and prevent periodontal tissue deformation. These dentures or prostheses can be classified into partial / complete dentures and partial / complete prostheses based on the number of missing teeth.

[0003] On the other hand, dental adhesive is applied to the inner surface of the aforementioned dentures to bond them to the gingival surface. As a result, occlusal pressure acts directly on the gums, causing a foreign body sensation and pain. Conversely, the aforementioned dentures are fixed to a fixation device implanted in the alveolar bone, thus reducing the foreign body sensation and pain in the gums caused by occlusal pressure. However, since the aforementioned dentures are essentially permanently fixed in the oral cavity, they present management challenges. Therefore, an overdenture, which overcomes the shortcomings of the aforementioned dentures and prostheses, has been disclosed.

[0004] In detail, the aforementioned overdenture, like the aforementioned denture, is fixed in a fixation device implanted in the alveolar bone and, like the aforementioned denture, can be removed from the oral cavity, thus facilitating cleaning and other management. In this case, the aforementioned overdenture includes an abutment connected to the aforementioned fixation device or a connecting device selectively engaged with an accessory.

[0005] Here, the existing connecting device is configured as a ball-shaped device that individually matches the attachments that are implanted and fixed at intervals along the dental arch of the alveolar bone, or as a rod-shaped device via the abutment.

[0006] In detail, the ball-type coupling device has a structure in which the upper end of each of the aforementioned attachments is individually coupled to a fixing portion formed on the inner surface of the aforementioned overdenture. That is to say, the positioning accuracy between each of the aforementioned attachments and each of the aforementioned fixing portions is necessary; if any of the aforementioned coupling devices is not aligned with the aforementioned attachment in the accurate position, the aforementioned overdenture cannot be accurately set.

[0007] Furthermore, in the bar-type connection device, the fixing bar passes through and is fixed along each of the aforementioned abutments, and a mounting groove is formed on the inner surface of the overdenture for the upper end of the abutment and the fixing bar to be inserted. Therefore, the bar-type connection device has the advantage of making it easier to install the overdenture into the oral cavity than the ball-type connection device.

[0008] At this point, the aforementioned fixation rod is bent in accordance with the implantation information of the fixation device via multiple abutments, and is made of a rigid metal material whose deformation due to external forces such as chewing pressure is minimized after bending. Therefore, in order to securely fix the fixation rod to each abutment, the implantation height of each fixation device and the implantation height of the abutment must always be aligned, which requires alveolar bone flattening. Furthermore, each patient requiring dental restoration has a different occlusal vertical dimension, and the amount of alveolar bone cut is determined accordingly.

[0009] However, in the past, doctors cut / flattened the alveolar bone based on experience. Therefore, when the amount of cutting was too large or too small, the occlusion between the opposing teeth and the overdenture was not optimal, leading to increased discomfort. In addition, since the flattened outer surface of the alveolar bone was not precisely formed to correspond to the implantation height of the fixation device, there was a problem that the fixation rod could not be securely fixed.

[0010] On the other hand, in the past, the overall dental restoration plan, including the aforementioned implant information and the design of the aforementioned overdenture, was designed based on CT images that included information such as the appearance and density of the patient's alveolar bone.

[0011] At this point, while CT images readily provide information about the alveolar bone, they struggle to capture information about the gingiva, which is soft tissue. Furthermore, there are limitations to using CT images for actual guidance in the design of each implanted device in overdentures. In other words, converting these CT images into STL files that are easily 3D printed or milled for overdentures and various guiding devices requires excessive time. Moreover, the overall duration of dental restoration is extended due to the lengthy manufacturing process of various guiding devices and the series of implantation procedures involved, such as alveolar bone cutting and fixation device implantation. This adds further inconvenience. Summary of the Invention

[0012] The problem to be solved

[0013] To address the aforementioned problems, the present invention aims to provide a method for implanting a dental prosthesis that improves the reliability of dental restorations.

[0014] Solution to the problem

[0015] To address the aforementioned problems, this invention provides a method for implanting a dental prosthesis. The method includes: a first step of generating a three-dimensional planning image, which is created by overlaying and integrating a scanned image and a CT image; setting multiple implant placement details along the dental arch in the three-dimensional planning image for the prosthesis; and designing and manufacturing an implantation guide device, which guides a guide for alveolar bone flattening and a guide for implant placement; a second step of flattening the alveolar bone using the implantation guide device, implanting the dental implant, and fixing a support device including a support abutment and a support fixation rod to the implant. The upper side of the implant; the third step, modifying the occlusion of the temporary prosthesis between the maxilla and mandible, so that a temporary mounting portion for inserting the framework device is formed on the inner surface of the temporary prosthesis; the fourth step, obtaining a modified scan image from the modified temporary prosthesis scan image in a manner that exposes the three-dimensional shape information of the temporary mounting portion to the outside, and exchanging the three-dimensional shape information of the temporary mounting portion with the virtual framework device; and the fifth step, fixing the artificial tooth portion to the artificial gingiva to manufacture the final dental restoration, wherein the inner surface of the artificial gingiva portion has a mounting portion formed based on the virtual framework device and is fixed with a clip that engages with the fixing rod.

[0016] The effects of the invention

[0017] Through the above-described solution, the present invention achieves the following effects.

[0018] First, based on the oral cavity scan images and CT images, as well as the shape information of dental implants and sleeve devices pre-stored in the digital library, a high-precision dental restoration plan is developed for the patient. The implantation guide device and dental restoration designed and 3D printed according to the plan can be installed in the oral cavity with high accuracy and precision.

[0019] Secondly, the implantation information can be correctly set based on CT images showing the cross-section of the oral cavity, and the image data used for actual design can be easily converted into STL files that can be 3D printed based on scanned images and virtual data as surface data, thereby significantly reducing the overall design and manufacturing process.

[0020] Third, the virtual flat surface position used as a reference during the flattening and cutting of the alveolar bone is modified and set to account for the extra gaps that may interfere with the alveolar bone when installing the surgical guide. Therefore, the actual surgical guide is precisely fixed to the oral cavity and guides the implant placement, thereby significantly improving the implantation accuracy.

[0021] Fourth, by first considering the patient's occlusal plane and the position of the virtual implant and virtual sleeve device with vertical diameter, the virtual flat surface is set. Therefore, the accuracy of the design information for the dental restoration with improved occlusal accuracy and the implantation guide device that accurately guides its placement can be significantly improved.

[0022] Fifth, the clamp bases provided for general purposes are individually coupled to each support abutment, and the fastening of the fastening screws is guided by the alignment coupling rods being restricted to being parallel to the pre-set bending path information in the alignment direction of adjacent clamp bases. Therefore, the coupling tolerance is practically close to zero, thereby significantly improving the implantation accuracy.

[0023] Sixth, the final dental restoration is fixed by a bracket device that is fixed along the dental arch with a wide arc area, thus significantly improving occlusal stability. In fact, the engagement of a single clip with a fixing bar significantly improves ease of installation. Attached Figure Description

[0024] Figure 1 This is a flowchart of a method for implanting a dental prosthesis according to an embodiment of the present invention.

[0025] Figure 2 This is a flowchart of an image data processing procedure according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram illustrating a three-dimensional planning image according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram illustrating the virtual arrangement process of a virtual sleeve device according to an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram illustrating the process of setting a virtual flat surface according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram illustrating a variation of the process for setting a virtual flat surface according to an embodiment of the present invention.

[0030] Figure 7a and Figure 7b A schematic diagram showing design information for an implantation guidance device according to an embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram illustrating design information for an implantation guidance device according to another embodiment of the present invention.

[0032] Figure 9 A schematic diagram illustrating design information for an implantation guidance device according to another embodiment of the present invention.

[0033] Figure 10 This is a schematic diagram illustrating an implantation guidance device according to another embodiment of the present invention.

[0034] Figure 11 Part (a) to Figure 11 Part (b) is a schematic diagram illustrating the fixing process of the support device according to an embodiment of the present invention.

[0035] Figure 12 Part (a) to Figure 12 Part (d) is a schematic diagram illustrating the process of confirming the bending angle of the fixed rod according to an embodiment of the present invention.

[0036] Figure 13 This is a schematic diagram illustrating the modification process of a temporary denture according to an embodiment of the present invention.

[0037] Figure 14 This is a schematic diagram illustrating the process of exchanging modified scanned images according to an embodiment of the present invention.

[0038] Figure 15 This is a schematic diagram illustrating the design process of an overlay denture and a cutting guide according to an embodiment of the present invention.

[0039] Figure 16a and Figure 16b A schematic diagram illustrating the manufacturing process of an overdenture according to an embodiment of the present invention is shown.

[0040] Figure 17 This is a schematic diagram illustrating the fixing process of a clip according to an embodiment of the present invention.

[0041] The best way to implement the invention

[0042] The preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings.

[0043] Methods for implementing the invention

[0044] Hereinafter, the implantation method of a dental prosthesis according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0045] On the other hand, preferably, the implantation method of the present invention is understood to include not only implanting the dental implant (hereinafter referred to as the fixation device) into the alveolar bone, but also a series of processes including manufacturing a final dental prosthesis and mounting the final dental prosthesis on the upper side of the implanted fixation device. In this case, preferably, the dental prosthesis finally manufactured according to the present invention is understood to be an overdenture. The overdenture includes a support abutment and a fixation bar, thereby being detachably installed from the oral cavity via a support device fixed to the upper side of the fixation device.

[0046] Furthermore, preferably, the gingival portion of the object to be restored, as described below, is understood as the jawbone that requires restoration of teeth by the aforementioned overdenture. In this invention, it is described and illustrated as the mandible with residual molars. Also preferably, the opposing dental arch or opposing side, as described below, is understood as the jawbone that occludes with the gingival portion of the object to be restored. In this invention, it is described and illustrated as the maxilla with dentition. Of course, depending on the circumstances, the maxilla and / or mandible may be edentulous or partially edentulous in this invention, and the same principle applies to the manufacture of overdentures in cases where the maxilla and / or mandible are dentent and require restoration after tooth extraction.

[0047] Preferably, the implantation guiding device described below is understood to include a bone reduction guide and a surgical guide. Preferably, the bone reduction guide is understood to be a device that guides the cutting and flattening of the upper end of the alveolar bone according to the implantation height of the fixation device. In this case, the implantation height of the fixation device is set taking into account the vertical diameter between the overdenture and the opposing teeth, as well as the height of the support device. Furthermore, preferably, the surgical guide is understood to be a device for guiding the implantation of the fixation device in the cut and flattened alveolar bone at a precise implantation position and direction.

[0048] Furthermore, the temporary dentures described below are dentures manufactured in one go to obtain the design information for the aforementioned dental restorations, and are deformable through the oral cavity or by an impression model made after obtaining an impression of the oral cavity. Of course, these temporary dentures are for temporary use by the patient during the dental restoration process, significantly improving practicality and convenience during the procedure.

[0049] Figure 1 This is a flowchart of a method for implanting a dental prosthesis according to an embodiment of the present invention. Figure 2 This is a flowchart of an image data processing procedure according to an embodiment of the present invention. Figure 3 This is a schematic diagram illustrating a three-dimensional planning image according to an embodiment of the present invention.

[0050] Reference Figure 1 The implantation method of the dental prosthesis according to the present invention includes the following series of steps: generating a three-dimensional planning image and setting the implantation information of the dental implant (210), designing and manufacturing an implantation guide device (220), flattening the alveolar bone and implanting the dental implant, fixing the support device (230), modifying the temporary denture (240), exchanging and modifying the scanned images (250), manufacturing the artificial tooth part and the artificial gingiva part and fixing the clips (260), and manufacturing the final dental prosthesis (270).

[0051] Furthermore, referring to Figure 2 The image data processing process in the above-mentioned dental prosthesis implantation method includes the following series of steps: integrating the scanned image with the CT image (110), virtually arranging the virtual implant (120), extracting and eliminating the model (130), virtually replacing the virtual flat surface (140), and setting the design information of the implantation guide device and the dental prosthesis (150).

[0052] In detail, refer to Figure 3 The aforementioned three-dimensional planning image (M) includes scanned images obtained by including three-dimensional shape information of the maxilla and mandible, at least one side of the maxilla and mandible being the gingiva of the object to be repaired.

[0053] Specifically, the aforementioned scanned images are preferably obtained by scanning the surface of the oral cavity or impression model. The scanned images include an image of the gingival portion of the prosthesis (m2) containing three-dimensional shape information of the gingival portion of the prosthesis, and an image of the opposing side (m3) containing three-dimensional shape information of the opposing side. At this time, the images of the gingival portion (m2) and the opposing side (m3) can be acquired and virtually aligned based on a pre-defined occlusal plane (op). This allows for the virtual arrangement of images of the maxilla and mandible corresponding to the patient's vertical mouth diameter. Furthermore, the CT image (m1) is obtained from the patient's head using a CT imaging device and contains internal tissue information hidden by the gingival tissue.

[0054] The aforementioned scan image and the aforementioned CT image (m1) can be integrated based on their common parts to generate the aforementioned three-dimensional planning image (M). Here, the aforementioned common part is the outside of the hard tissue that is not hidden by the gingival tissue and whose movement is minimized, and can correspond to the outside of the residual tooth or the gap between teeth.

[0055] Alternatively, if at least one side is edentulous, a reference marker is attached thereto, and the aforementioned scan image and CT image (m1) are obtained. Reference marker images showing the same portion in each image can be set as common portions and integrated with each other. In this case, considering the cutting height of the alveolar bone, it is preferable to attach the reference marker to the lower side, which is furthest from the upper end of the alveolar bone.

[0056] Therefore, the aforementioned three-dimensional planning image (M) can simultaneously represent the three-dimensional shape information of the gingival region and the opposing side of the restoration object included in the aforementioned scanned image, as well as the internal tissue information such as the maxillary and mandibular alveolar bone, residual teeth, and inferior alveolar nerve (K) included in the aforementioned CT image (m1). At this time, the aforementioned gingival region image (m2), the aforementioned opposing side image (m3), and the aforementioned CT image (m1) are represented by an overlap of the aforementioned common portions, and each image can be modified individually, and each image can be manipulated to selectively display or flash. That is, preferably, the aforementioned three-dimensional planning image (M) is understood not as a combination of the aforementioned scanned image and the aforementioned CT image (m1), but rather as an overlap and virtual arrangement of the aforementioned scanned image and the aforementioned CT image (m1).

[0057] In the aforementioned three-dimensional planning image (M), multiple implantation information points (A) are virtually set along the dental arch. Specifically, preferably, the implantation information points (A) are set to at least one or more, and more preferably to four locations on the anterior side or two locations on the anterior side and two locations on the molar side, in order to stably install and support the final dental restoration.

[0058] Additionally, virtual teeth (m61) can be virtually arranged in the aforementioned three-dimensional planning image (M). The virtual teeth (m61) are the three-dimensional shape information of the artificial tooth portion, which will be described below, and are pre-stored in a digital library, which is a storage location for image data used in dental restoration design. The digital library is connected to the planning unit via wired / wireless communication. Here, the planning unit is preferably understood as a device for loading and displaying the aforementioned scanned images and CT images (m1), generating the aforementioned three-dimensional planning image (M), and setting various design information. That is, image data acquired by a scanner or CT imaging device and image data stored in the aforementioned digital library are loaded into the planning unit to establish an overall plan for dental restoration, and design information for the aforementioned implantation guide device and the aforementioned overdenture can be obtained.

[0059] Preferably, the virtual tooth (m61) is set as standardized three-dimensional vector data, based on the average value of each tooth calculated taking into account anatomical deviations due to gender and age. Alternatively, the virtual tooth (m61) can be standardized to a single pre-stored size, or it can be divided into large / medium / small pre-stored sizes. Furthermore, preferably, in the virtual tooth (m61), the three-dimensional shape information corresponding to each artificial tooth is individually set and stored in groups along the dental arch. That is, the virtual tooth (m61) can be simultaneously and virtually arranged on the three-dimensional planning image (M) with multiple tooth images of either the maxillary or mandibular arch arranged along the dental arch. At this time, the virtual tooth (m61) can be manipulated to selectively delete unwanted tooth images from each tooth image.

[0060] Figure 4 This is a schematic diagram illustrating the virtual arrangement process of a virtual sleeve device according to an embodiment of the present invention. Preferably, the virtual sleeve device is understood to include a virtual implantation guide sleeve and a virtual fixation guide sleeve, which will be described below.

[0061] Reference Figure 3 and Figure 4 The virtual dental implant (mf) selected from the aforementioned digital library is virtually arranged in accordance with the aforementioned implantation information (A). At this time, the virtual dental implant (mf) can be virtually arranged based on the alveolar bone information included in the aforementioned CT image (m1). In addition, the virtual implantation guide sleeve (m51), which is spaced apart from and virtually concentrically arranged at the upper end of the virtual dental implant (mf), is superimposed on the aforementioned scan image and integrated and stored.

[0062] The aforementioned virtual implant (mf) is preferably understood as the three-dimensional shape information of the physical fixation device. Furthermore, the aforementioned virtual implantation guide sleeve (m51) is preferably understood as the three-dimensional shape information of a guide sleeve that, in conjunction with the surgical guide described below, guides the implantation of the physical fixation device. The aforementioned virtual implantation guide sleeve (m51) can be pre-stored as a set with the aforementioned virtual implant (mf) in the aforementioned digital library. In this case, preferably, the offset distance of the aforementioned virtual implantation guide sleeve (m51) is set according to the specifications of the aforementioned virtual implant. Figure 6 w3). Here, the offset distance ( Figure 6 w3) is preferably understood as the distance between the upper end of the fixation device and the upper end of the guide sleeve. The offset distance is set taking into account interference with adjacent residual teeth or the virtual implantation guide sleeve (m51). Figure 6 w3).

[0063] At this time, it is preferable to set the virtual implantation guide sleeve (m51) and the virtual coupling portion (m50a) as a group, wherein the virtual coupling portion (m50a) is the three-dimensional shape information of the coupling portion included in the surgical guide. The virtual coupling portion (m50a) includes a virtual coupling hole (m53), which is virtually coupled to the virtual implantation guide sleeve (m51). The virtual coupling hole (m53) includes three-dimensional shape information regarding the coupling hole for coupling with the physical guide sleeve and the engagement groove for the protrusion of the guide sleeve that is rotatably coupled in the coupling hole.

[0064] Furthermore, the virtual fixation guide sleeve (m55) is virtually arranged corresponding to the fixation pin information (D) set considering the aforementioned implantation information (A) and inferior alveolar nerve (K), etc. Preferably, the virtual fixation guide sleeve (m55) is integrated and stored together with the virtual implantation guide sleeve (m51) and the aforementioned scan image, preferably together with the aforementioned gingival image (m2) of the restoration object. In this case, except for size and position, the virtual fixation guide sleeve (m55) has substantially the same structure as the virtual implantation guide sleeve (m51), therefore its detailed description will be omitted.

[0065] The aforementioned virtual implantation guide sleeve (m51) and virtual fixation guide sleeve (m55) can be overlaid with and integrated into the scanned image, and then used as design information for the implantation guide device described below through a series of processes. At this time, the virtual implantation guide sleeve (m51) and virtual fixation guide sleeve (m55) are pre-stored as a set with the virtual connection portion (m50a), thus enabling a rapid and simplified design process for the surgical guide, significantly improving manufacturing convenience.

[0066] This may also include a process of deleting and correcting the image inside the pre-defined temporary strikethrough line (m2a) in the aforementioned gingival image (m2) of the restoration object. For example, when the aforementioned gingival image (m2) of the restoration object contains a large number of residual tooth shapes or when the aforementioned virtual sleeve device is excessively hidden by the aforementioned gingival image (m2) of the restoration object, the aforementioned image deletion and modification can be performed. As a result, the overlapping state of the aforementioned virtual implantation guide sleeve (m51) and the aforementioned virtual fixation guide sleeve (m55) with the aforementioned scanned image is clearly visible, thus further improving design convenience.

[0067] As described above, in this invention, the implantation information (A) is accurately set based on the CT image (m1) displaying a complete cross-sectional image of the oral cavity, and the image data required for the actual design is set based on the scanned images and virtual data, which are surface data of each object. Therefore, it is easy to switch to an STL (stereo lithography) file, which can be manufactured by rapid 3D printing of the implantation guide device, etc., as described below, and the overall design and manufacturing process can be performed quickly.

[0068] Figure 5 This is a schematic diagram illustrating the process of setting a virtual flat surface according to an embodiment of the present invention. In this case, it is preferable to understand the three-dimensional shape information of the gingiva of the restoration object as having the same meaning as the image (m2) of the gingiva of the restoration object, and the same reference numerals will be used to describe and illustrate it.

[0069] Reference Figure 5 An elimination model (m30) matching the gingival region of the restoration object is extracted from the aforementioned digital library. This elimination model (m30) is standardized into a semi-cylindrical shape corresponding to the anatomical dentition and is pre-stored in the digital library. In this case, the circular portion of the elimination model (m30) corresponds to the mesial surface of the oral cavity, and the vertical side corresponds to the distal surface.

[0070] In the aforementioned elimination model (m30), the horizontal reference plane (m31) that matches the occlusal plane (op) can pass through the center or be set on another surface (the top in the figure). For example, when performing dental restorations on both the maxilla and mandible simultaneously, the horizontal reference plane (m31) is set along the center of the elimination model (m30); when performing dental restorations on one side of the maxilla and mandible, the horizontal reference plane (m31) can be set on the other surface of the elimination model (m30). Here, the interval (h) between the horizontal reference plane (m31) and the other surface (m33) can be virtually adjusted taking into account the patient's vertical diameter and dental restoration plan.

[0071] At this time, virtual adjustment is performed in the above-mentioned elimination model (m30) so that the side corresponding to the above-mentioned restoration object gingival image (m2) corresponds to the second reference plane (L2) which is separated downward from the first reference plane (L1) by a pre-set extra interval (w1).

[0072] Specifically, the first reference plane (L1) is set to be separated from the occlusal plane (op) in a manner corresponding to a pre-defined vertical diameter, and corresponds to the upper end of the virtual implant. That is, the virtual implant can be selected and extracted from the digital library and virtually arranged along the dental arch, and its upper end can be virtually aligned to match the first reference plane (L1).

[0073] Here, the redundant interval (w1) is preferably set based on the position and arrangement angle of the lower end of the virtual implantation guide sleeve (m51) protruding downward from the first reference plane (L1). That is, the redundant interval (w1) can be set based on the three-dimensional shape information of the virtual implantation guide sleeve (m51) or the virtual joint (m50a) protruding downward from the first reference plane (L1). Therefore, when the physical surgical guide is installed in the oral cavity and guides the implantation of the fixation device, interference between the inner surface structure of the surgical guide and the flattened upper surface of the alveolar bone can be prevented in advance. Thus, since the fixation device is accurately implanted corresponding to the implantation information (A) set based on the three-dimensional planning image (M), implantation accuracy can be significantly improved.

[0074] On the other hand, the portion of the gingival image (m2) of the restoration object that overlaps with the elimination model (m30) is eliminated, forming the virtual flat surface (E). The upper end of the gingival image (m2) of the restoration object is virtually swapped by the virtual flat surface (E). Therefore, based on the three-dimensional shape information of the gingival region of the restoration object, the virtual implantation guide sleeve (m51), and the virtual flat surface (E), the overall design information of the implantation guide device can be quickly and accurately set.

[0075] Figure 6 This is a schematic diagram illustrating a modified example of the process for setting a virtual flat surface according to an embodiment of the present invention. Since the actual structure of this modified example is the same as that of the embodiment except for the virtual arrangement of the aforementioned elimination model, a detailed description of the identical structure will be omitted.

[0076] Reference Figure 6The elimination model (m30) can be virtually arranged based on a virtual abutment (m14) that matches the offset distance (w3) of the virtual implantation guide sleeve (m51). The virtual abutment (m14) is virtually arranged between the virtual implantation guide sleeve (m51) and the virtual implant, which are separated by the offset distance (w3). The virtual abutment (m14) is preferably formed as a cylinder with its lower part matching the upper part of the virtual implant, and its height (w2) can be set according to the offset distance (w3). For example, when the offset distance (w3) is 9 mm, the length of the virtual abutment can be set to 4.5 mm; when the offset distance (w3) is 10.5 mm, the length of the virtual abutment can be set to 6 mm; and when the offset distance (w3) is 12 mm, the length of the virtual abutment can be set to 7.5 mm.

[0077] Furthermore, preferably, one side (m33) of the aforementioned elimination model (m30) is virtually modified corresponding to the second reference surface (L2) set at the lower part position of the aforementioned virtual abutment (m14). That is, the aforementioned elimination model (m30) is virtually arranged taking into account the upper end position of the support abutment that is coupled to the upper end of the actual fixation device. As a result, the cutting and flattening height of the alveolar bone is more preferably set, thus preventing the problem of decreased accuracy due to interference between the oral cavity and the device or between devices during the implantation process, which will be described below.

[0078] Furthermore, the cutting and flattening range / position of the alveolar bone is set based on the aforementioned virtual dental implant and the aforementioned virtual implantation guide sleeve (m51) arranged together with it. That is, the cutting and flattening height of the alveolar bone can be set after first considering the height of the aforementioned framework device and the aforementioned overdenture installed through the aforementioned framework device. As a result, while improving the occlusal accuracy between the aforementioned overdenture and the opposing teeth after final fabrication and installation in the oral cavity, discomfort during chewing is minimized, thus significantly improving the satisfaction of dental restoration.

[0079] Figure 7a and Figure 7b A schematic diagram showing design information for an implantation guidance device according to an embodiment of the present invention.

[0080] Reference Figure 7aThe design information (m40) for the aforementioned planarization guide includes a method for setting the following steps: forming an inner surface contour based on the three-dimensional shape information of the gingiva of the restoration object; and forming design information (m41) for a planar guide surface along the edge of an opening corresponding to the aforementioned virtual planar surface (E). Then, a physical planarization guide is manufactured by transmitting the design information (m40) for the planarization guide to a manufacturing apparatus such as a 3D printer.

[0081] Specifically, in the aforementioned image of the gingival portion of the restoration object (m2), a virtual main body is formed by protruding or separating the inner and outer surface data of the gingiva corresponding to the lower side of the virtual flat surface (E) with a pre-set thickness or interval. At this time, the upper side of the virtual main body is set as an opening based on the virtual flat surface (E). Furthermore, design information (m41) for the flat guide surface is set along the upper edge of the virtual main body that matches the outer edge of the virtual flat surface (E). Additionally, design information for the workpiece fixing portion, which can be fixed with a fixing pin, based on the virtual fixing guide sleeve (m55) superimposed on the scanned image, can be included in the design information (m40) of the flattened guide.

[0082] Reference Figure 7b The design information (m50) of the surgical guide is designed by forming a virtual insertion hole (m53) corresponding to the outer periphery of the virtual implantation guide sleeve (m51) at the upper end of the virtual main body. Furthermore, a physical surgical guide is manufactured by transmitting the design information (m50) of the surgical guide to the manufacturing apparatus.

[0083] Here, since the virtual engagement hole (m53) is included in the virtual engagement portion (m50a) pre-stored as a set with the virtual implantation guide sleeve (m51), the three-dimensional shape information of the virtual engagement hole (m53) can be set instantly without a complex design process. Furthermore, considering the redundant interval (w1) in setting the design information (m41) of the flat guide surface, the virtual cutting surface virtually set based on the lower part of the virtual engagement portion (m50a) and the design information (m41) of the flat guide surface can be set separately. Additionally, the design information of the workpiece fixing portion can be included in the design information (m50) of the surgical guide based on the virtual fixing guide sleeve (m55).

[0084] That is, the planarization guide and the surgical guide are designed based on the image of the gingiva of the restoration object (m2) and the information of the fixation pin (D), which are essentially the same image data. At this time, the design information of the planar guide surface (m41) or the position of the virtual fixation guide sleeve (m55) is designed based on the virtual planar surface (E). Therefore, the inner surface contours of the planarization guide and the surgical guide, as well as the position of the workpiece fixation part, can be set to be substantially the same. As a result, during the process of installing the surgical guide after separating the planarization guide, their installation positions are substantially consistent, thus significantly improving the implantation accuracy.

[0085] Furthermore, in the aforementioned planarization guide, considering the extra space for interference between the upper end of the cut and planarized alveolar bone and the physical surgical guide, the design information (m41) of the planarization guide surface is set based on the second reference surface (L2). Therefore, when the physical surgical guide is installed on the alveolar bone, the inner surface is fixed along the side of the alveolar bone, and the inner surface that engages with the guide sleeve can be spaced apart from each other. This prevents implantation errors that may occur if the surgical guide is not installed in the correct position, thereby significantly improving implantation accuracy.

[0086] on the other hand, Figure 8 This is a schematic diagram illustrating design information for an implantation guidance device according to another embodiment of the present invention. Figure 9 This is a schematic diagram illustrating design information for an implantation guidance device according to another embodiment of the present invention. Figure 10 This is a schematic diagram illustrating an implantation guidance device according to another embodiment of the present invention. At this time, Figure 8 and Figure 9 The basic structure, except for the process of obtaining design information, is the same as that of the embodiment described above, so a detailed description of the same structure is omitted.

[0087] Reference Figure 8The inner surface contour of the surgical guide design information (m500A) can be formed based on the outer surface contour of the planarization guide design information (m40). Furthermore, the design and manufacturing process may include the step of forming the virtual engagement hole corresponding to the virtual implantation guide sleeve (m51) at the upper end of the surgical guide design information (m500A). In this case, a virtual alignment engagement groove (m54) that mates with the outer periphery of the workpiece fixing part design information (m50b) can be provided on the outer periphery of the surgical guide design information (m50A). Additionally, independent of the workpiece fixing part design information (m50b) included in the planarization guide design information (m40), the surgical guide design information (m500A) may also include the workpiece fixing part design information (m50c).

[0088] That is, the surgical guide designed and manufactured through the above process is fitted and fixed on the outer side of the planarization guide. Therefore, without separating the planarization guide fixed to the gingiva of the patient being repaired by the fixing pin, the surgical guide is overlapped and fixed on top of it. This fundamentally solves the problem of misalignment during the installation of the surgical guide after separating the planarization guide, thus further improving accuracy. Furthermore, it prevents excessive damage caused by repeatedly inserting and removing the fixing pin in the alveolar bone and avoids weakening of the alveolar bone, significantly improving safety.

[0089] Or, refer to Figure 9 and Figure 10 A virtual guide body (m9) is established, which has an inner facial contour formed based on the three-dimensional shape information of the gingiva of the restoration object and has a virtual engagement hole (m53) corresponding to the outer periphery of the virtual implantation guide sleeve. Furthermore, multiple virtual cutting blocks (m41) are virtually arranged around the virtual guide body (m9). Each virtual cutting block (m41) has a three-dimensional shape with a thickness protruding, one side matching the first reference surface (L1) and the other side matching the second reference surface (L2). Subsequently, when the overlapping area dl of the virtual cutting blocks (m41) and the virtual guide body (m9) is eliminated, design information (m500B) for the surgical guide, including design information of the cutting slot holes, is generated.

[0090] Furthermore, the physical surgical guide (500B) manufactured based on the design information (m500B) of the aforementioned surgical guide is divided into a first main body (501) located on the lower side, with the cutting groove (57) formed based on the aforementioned virtual cutting block (m41) as the boundary, and a second main body (502) located on the upper side. At this time, a connecting hole (53) that engages with a guide sleeve (52) including a guide hole (51) is formed in the aforementioned second main body (502), and a connecting groove (53a) for engaging the protrusion of the aforementioned guide sleeve (52) can be formed on the inner circumference of the connecting hole (53). In addition, in the case of residual molars, an alignment mating part (59) that aligns with them can also be formed.

[0091] Furthermore, after manufacturing two surgical guides (500B), one surgical guide (500B) can be deformed into a planarized guide by separating its upper side along the cutting slot (57). As described above, since only one design is actually needed to manufacture the surgical guide and the planarized guide, the simplification and speed of the design process can be significantly improved. In addition, since the lower surface (57c) of the cutting slot (57) is actually formed to correspond to the second reference surface (L2), the lower surface (57c) of the cutting slot (57) can be used as the planarized guide surface simply by separating the second main body (502).

[0092] Figure 11 Part (a) to Figure 11 Part (b) is a schematic diagram illustrating the fixing process of the support device according to an embodiment of the present invention. Figure 12 Part (a) to Figure 12 Part (d) is a schematic diagram illustrating the process of confirming the bending angle of the fixed rod according to an embodiment of the present invention.

[0093] Reference Figure 11 and Figure 12 The alveolar bone is cut and flattened under the guidance of the flattening guide, and the fixation device (f) is implanted in the alveolar bone (1a) that has been cut and flattened under the guidance of the surgical guide. Furthermore, the support device ( Figure 13 1400) is fixed to the upper side of the aforementioned fixing device (f). Here, the aforementioned bracket device ( Figure 13 1400 in the middle includes a support base (1410) and a fixing rod (1430).

[0094] The aforementioned support base (1410) is secured by fastening screws ( Figure 13The fixing rod (1420) is fixed to the upper side of the fixing device (f), and a longitudinally recessed insertion part (1414) is formed at the upper end. At this time, the fixing rod (1430) is inserted into the insertion part (1414), and the pressure device ( Figure 13 1440) is coupled to the fastening hole in the center through which the aforementioned fastening screw (1420) passes. Figure 13 The upper end of 1413 is used to fix the fixing rod (1430) to the lower end of the inner side of the insertion part (1414) and the pressure device ( Figure 13 Between 1440 and 1440.

[0095] Here, the aforementioned fixing rod (1430) is bent to intersect with two implantation points (A1) on the anterior side and two implantation points (A2) on the molar side, which are among the multiple implantation points set along the aforementioned dental arch. At this time, the two ends of the aforementioned fixing rod (1430) can be bent into a trapezoidal shape based on the pre-set bending points.

[0096] In detail, the aforementioned fixing rod (1430) is configured such that its center intersects with a pair of anterior tooth-side implant points (A1), and its two ends intersect with the aforementioned molar-side implant points (A2). Therefore, the position and angle of the bending point can be clearly set based on the aforementioned three-dimensional planning image (M), and the bending state can be stably maintained. Thus, damage or fracture of the alveolar bone caused by springback after the fixing rod (1430) is bent into a circle can be prevented in advance.

[0097] Simultaneously, based on the aforementioned three-dimensional planning image (M), bending path information for guiding the bending of the aforementioned fixing rod (1430) is set. That is, the aforementioned implantation information is set to correspond to a pair of aforementioned anterior tooth side implantation points (A1) intersecting the center line (B1) in the aforementioned bending path information and a pair of aforementioned molar side implantation points (A2) intersecting the side lines (B2) in the aforementioned bending path information. In addition, a fixing clamp base (10) and a pivoting guide clamp base (20) are prepared, which guide the opening of the aforementioned support base (1410) via the insertion portion (1414) corresponding to the aforementioned bending path information.

[0098] Reference Figure 11 In part (a), the aforementioned fixation device (f) is implanted into each implantation point (A1), (A2), and the aforementioned support base (1410) is arranged on the upper end of the fixation device (f) implanted corresponding to a pair of the aforementioned anterior tooth side implantation points (A1). Furthermore, the aforementioned fixation clamp base (10) is attached to each of the upper ends of the aforementioned support base (1410).

[0099] In the aforementioned fixture base (10), an alignment protrusion (12a) is formed on the inner periphery of the receiving groove (12) into which the upper end of the support base (1410) is inserted, which engages with the aforementioned insertion portion (1414). Furthermore, an alignment groove (15) parallel to the alignment protrusion (12a) is formed across the top of the fixture base, and a through hole (13) communicating with the receiving groove (12) is formed. Therefore, when the alignment grooves (15) of each of the aforementioned fixture bases (10) are rotated to align in a straight line, the opening direction of the insertion portion (1414) engaging with the alignment protrusion (12a) can also be rotated to align in a straight line.

[0100] With each of the aforementioned alignment slots (15) rotated and aligned in a straight line, an alignment fixing rod (u) is simultaneously inserted to restrict the rotational alignment. Furthermore, when a rotating device, such as a driver, is inserted into each of the aforementioned through holes (13) of the aforementioned fixed clamp base (10) where rotation is restricted, and the aforementioned fastening screws (1420) are tightened to the aforementioned fixing device (f), the aforementioned support base (1410) is fixed to the aforementioned front tooth side.

[0101] Reference Figure 11 In part (b), the pivot guide jig base (20) is alternately coupled to the support base (1410) fixed to the front tooth side. The upper surface of the pivot guide jig base (20) is formed with an alignment groove (25) and a cylindrical receiving groove (22) for the upper end of the support base (1410) to be inserted. Therefore, the pivot guide jig base (20) can be supported and rotated by the support base (1410) while coupled to the support base (1410).

[0102] The aforementioned support base (1410) is arranged on the upper side of the fixation device (f) implanted at the molar-side implantation point (A2), and the aforementioned fixation clamp base (10) is attached to the support base (1410). Furthermore, rotational alignment is performed such that the alignment groove (15) of the fixation clamp base (10) arranged on the molar side and the alignment groove (25) of the pivot guide base (20) arranged on the anterior tooth side are in linear communication. Subsequently, the aforementioned alignment fixing rod (u) is simultaneously inserted into the alignment groove (15) of the fixation clamp base (10) and the alignment groove (25) of the pivot guide base (20), thereby restricting the rotational alignment state. Therefore, the support base (1410) on the molar side is aligned and fixed correspondingly to the two side lines (B2) via the insertion portion (1414).

[0103] In the aforementioned fixed clamp base (10) and the aforementioned pivot guide clamp base (20), the inner circumferential diameter of each of the aforementioned receiving grooves (12), (22) and the spacing between each of the aforementioned receiving grooves (12), (22) and each of the aforementioned alignment grooves (15), (25) are standardized in accordance with the specifications of the aforementioned support base (1410) and the bending angle unit of the aforementioned fixed rod (1430) and are prepared for general purposes.

[0104] Therefore, since the hassle of designing and manufacturing individual clamp bases for fixing the aforementioned support abutment (1410) in the accurate direction for each patient is minimized, the overall process and time of dental restoration are shortened, and costs are reduced, making it economical. Furthermore, the tightening of the fastening screws is guided by the alignment direction of adjacent clamp bases being restricted to parallel to predetermined bending path information via the aforementioned alignment fixing rod (u). Therefore, the connection tolerance between the aforementioned support abutment (1410) and the aforementioned fixing rod (1430) is formed to be substantially close to zero, thereby significantly improving implantation accuracy.

[0105] Reference Figure 12 From part (a) to part (b), the aforementioned fixing clamp base (10) is reassembled with each of the upper ends of the aforementioned support base (1410) which is combined with and fixed to the aforementioned fixing device (f). At this time, a curable resin is applied to a predetermined thickness to simultaneously surround each of the upper ends of the aforementioned fixing clamp base (10). Then, the curable resin is cured and formed into an alignment support (10A) that serves as a bridge integrally connecting the plurality of aforementioned fixing clamp bases (10). That is, the position of the aforementioned fixing clamp base (10) and the alignment direction of the aforementioned alignment protrusion (12a) can be fixed by the aforementioned alignment support (10A).

[0106] Then, the support simulation member (4) is inserted into each receiving groove (12) of the fixing clamp base (10) fixed by the alignment support (10A). A groove is formed at the upper end of the support simulation member (4) that corresponds to the groove via the insertion part (10A). Figure 13 The angle alignment portion (4a) corresponds to 1414 in the above. Therefore, when the upper end of the above-mentioned support simulation member (4) is inserted into the above-mentioned receiving groove (12), the above-mentioned angle alignment portion (4a) cooperates with the above-mentioned alignment protrusion (12a).

[0107] Reference Figure 12In part (c), the lower ends of the stent simulation members (4) that are aligned and inserted into the respective receiving slots (12) are connected together by a curable material such as plaster. Furthermore, when the curable material cures, the lower ends of the stent simulation members (4) have a rigidity that maintains a space between them. Therefore, an angle confirmation model (10B) can be formed where the stent simulation members (4) are arranged in a manner corresponding to the implantation points. Furthermore, a limiting alignment surface (4b) formed by discontinuous surfaces such as D-shaped cut surfaces is formed on the outer periphery of the stent simulation members (4). Therefore, when the curable material fills the space between the lower parts of the stent simulation members (4) and cures, the rotation of the stent simulation members (4) is restricted.

[0108] Reference Figure 12 In part (d), the bending angle of the fixing rod (1430) is confirmed using the aforementioned angle confirmation model (10B). That is, when the fixing rod (1430) is inserted into the angle alignment portion (4a) without interference, it can be determined that the fixing rod (1430) bends at a preferred bending angle. On the other hand, if the fixing rod (1430) is interfered with or not properly inserted when inserted into the angle alignment portion (4a), a bending error is determined, allowing modification of the fixing rod (1430).

[0109] As described above, in this invention, the angle confirmation model (10B) is generated based on the support abutment (1410) directly fixed to the cut and flattened alveolar bone (1a), thus allowing for precise modification of the fixation rod (1430) to correspond with the actual oral environment. Furthermore, after the support abutment (1410) is fixed to the oral cavity, the bending error of the fixation rod (1430) is determined and modified outside the oral cavity, thereby minimizing the inconvenience caused by frequent patient visits or repeated confirmation procedures.

[0110] Figure 13 To illustrate the modification process of a temporary denture according to an embodiment of the present invention, Figure 14 This is a schematic diagram illustrating the process of exchanging modified scanned images according to an embodiment of the present invention. On the other hand, the temporary denture (30) can be occluded and modified between the maxilla and mandible where the support device (1400) is actually fixed, or between an impression model where the support simulation element and the fixing rod are fixed. In the following, the case of modification by actual maxillary and mandibular occlusion will be described and illustrated as an example.

[0111] Reference Figure 13A temporary denture (30) is prepared and softened during heat treatment within a predetermined softening temperature range. The temporary denture (30) is then placed between the gingival portion (2) of the patient's tooth to which the aforementioned support device (1400) is fixed and the opposing dental arch (3). The temporary denture (30) is then bitten and modified to deform in accordance with the patient's vertical oral diameter under the patient's biting pressure. This forms a temporary mounting portion (35) for insertion of the support device (1400) by applying pressure to the inner surface of the temporary denture (30).

[0112] In detail, the temporary denture (30) can be manufactured by three-dimensionally printing a base resin containing acrylic oligomers corresponding to the shape of the temporary denture (30). The temporary denture (30) includes a groove (33a) on its inner surface, which is recessed to have a space exceeding the volume of the support device (1400). When the temporary denture (30) is heat-treated, it is preferable to soften the inner surface of the temporary gingival portion (33) other than the temporary tooth portion (32) that occludes with the opposing tooth. Furthermore, the temporary denture (30) can be occluded and modified between the maxilla and mandible while the groove (33a) is filled with relining resin (34).

[0113] Therefore, the temporary mounting portion (35) corresponding to the outer shape of the aforementioned support device (1400) can be engraved in the aforementioned lining resin (34), and the temporary gingival portion (33) can be modified to correspond to the outer shape of the patient's actual dental arch and gingival portion. Furthermore, by light-curing the modified temporary denture (30), it can be fully cured to a strength capable of withstanding chewing pressure. Therefore, the temporary denture (30) can be used temporarily until the initial fabrication of the dental restoration.

[0114] Reference Figure 14 An image of the temporary denture (m300) is obtained by scanning the inner and outer surfaces of the temporary denture (30) on which the temporary mounting portion (35) is modified. Then, from the temporary denture image (m300), a modified scan image (m30A) is obtained in a manner that exposes the three-dimensional shape information (m35) of the temporary mounting portion and the three-dimensional shape information (m333) of the inner surface of the temporary gingival portion, which is modified in accordance with the gingival portion of the restoration object, on the outer surface.

[0115] Specifically, a boundary line (X) is defined between the three-dimensional shape information of the temporary gingival portion and the three-dimensional shape information of the temporary tooth portion. Then, unwanted image data other than the inner surface of the boundary line (X) is defined as an elimination area (m39) and eliminated. As a result, the three-dimensional shape information (m35) of the temporary mounting portion formed on the inner surface of the temporary denture is exchanged to expose the outer surface, thereby obtaining the modified scan image (m30A).

[0116] At this point, preferably, the modified scan image (m30A) is replaced by a virtual support device (m40) pre-stored in the digital library. The virtual support device (m40) preferably corresponds to the shape of the support base (1410) and preferably includes a virtual fixing rod (m43) and a virtual clamp (m67) virtually engaging with the virtual fixing rod (m43). That is, by replacing it with the virtual support device (m40), surface irregularities, gaps, processing defects, or distortions or noise that may occur during the scanning of the temporary denture (30) during occlusion can be reduced, and design accuracy and precision can be significantly improved.

[0117] Furthermore, the overall scan image, including the aforementioned temporary denture image (m300), is stored as surface information without thickness. Additionally, the virtual data stored in the aforementioned digital library is pre-stored as data that can itself be used as design information. Therefore, the aforementioned scan image or the aforementioned modified scan image (m30A) can be easily used as design information for the aforementioned overdenture, reducing image processing difficulty, increasing speed, and thus greatly improving design convenience.

[0118] Figure 15 This is a schematic diagram illustrating the design process of a cover denture and a cutting guide according to an embodiment of the present invention. Figure 16a and Figure 16b A schematic diagram illustrating the manufacturing process of an overdenture according to an embodiment of the present invention is shown.

[0119] like Figures 15 to 16b As shown, preferably, a cutting guide (70) for adjusting the height of the artificial tooth portion (61) according to the patient's vertical mouth diameter is designed and manufactured based on the above-mentioned three-dimensional planning image (M).

[0120] Reference Figure 15 The virtual tooth (m61) is virtually arranged between the gingival image (m2) of the restoration object including the virtual flat surface (E) and the occlusal image (m3), and the virtual artificial gingival portion (m62) is set in such a way that it overlaps with the root side of the virtual tooth (m61).

[0121] The aforementioned virtual artificial gingiva (m62) can select and extract data pre-stored in the aforementioned digital library and virtually arrange it on the aforementioned scanned image, or it can be set based on the aforementioned gingiva image (m2) of the restoration object. In this case, preferably, the aforementioned artificial tooth (61) is standardized and provided as a finished product, and the aforementioned virtual tooth (m61) is preferably understood as the three-dimensional shape information of the aforementioned artificial tooth (61) prepared as a finished product being pre-stored in the aforementioned digital library. As a result, the inconvenience of complex design and separate manufacturing of each artificial tooth of the aforementioned artificial tooth (61) can be minimized, and the manufacturing process and period of the aforementioned overdenture (60) can be shortened.

[0122] Simultaneously, the occlusal end (m61d) of the aforementioned virtual tooth (m61) is aligned to virtually occlude with the opposing side image (m3) based on the occlusal plane (op). At this time, when the height of the virtual tooth (m61) exceeds the patient's vertical mouth diameter, the root end (m61c) of the virtual tooth (m61) protrudes below the outline information of the gingival image (m2) of the patient's gingival region. Furthermore, a virtual base gingival region (m62) corresponding to the inner surface of the patient's gingival region (m2) is virtually arranged on the scanned image, and the overlapping portion of the virtual tooth (m61) and the virtual base gingival region (m62) is designated as a deletion region (u2).

[0123] That is, intersecting lines (e1, e2) are set along the edge formed by the intersection of the surface data of the inner and outer surfaces of the virtual base gingival portion (m62) and the surface data of the virtual tooth (m61). The image of the virtual base gingival portion (m62) located inside the intersecting lines (e1, e2) is eliminated. At the same time, in the virtual tooth image (m61), the image located outside the intersecting lines (e1, e2) is eliminated, and the image located inside the intersecting lines (e1, e2) is integrated with the virtual base gingival portion (m62). Therefore, a virtual mating surface (u1) can be set along the inner periphery of the deleted region (u2).

[0124] At this time, the design information of the cutting guide includes the three-dimensional shape information of the cutting hole that is formed through the virtual mating surface (u1). Furthermore, the inner periphery of the virtual artificial gingiva is formed based on the virtual mating surface (u1), and the virtual artificial gingiva includes the inner surface contour of the virtual basic gingiva (m62), i.e., the inner surface information (m62c) of the mating groove separated from the virtual flat surface (E) by a predetermined placement interval (w4). That is, the design information of the cutting guide and the virtual artificial gingiva are designed based on the virtual basic gingiva (m62), which is the same design data, and the three-dimensional shape information of the cutting hole is formed by penetrating the virtual basic gingiva (m62) corresponding to the virtual mating surface (u1). Additionally, the virtual artificial gingiva can be set with a thickness corresponding to the inner surface information (m62c) of the mating groove in the virtual mating surface (u1). The design information of the cutting guide based on the three-dimensional planning image and the virtual artificial gingiva are sent to the manufacturing device and a physical cutting guide (70) and a physical artificial gingiva (62) are manufactured.

[0125] Reference Figure 16a Each of the artificial teeth (61b) of the aforementioned artificial tooth portion (61A), prepared for general use, is inserted into each of the aforementioned cutting holes (72) of the aforementioned cutting guide (70). At this time, when the outer side of each of the aforementioned artificial teeth (61b) is engaged with the inner circumferential surface of each of the aforementioned cutting holes (72), the root tip (61c) of the aforementioned artificial tooth portion (61A) protrudes towards the inner surface of the aforementioned cutting guide (70). The protruding root tip (61c) of the aforementioned artificial tooth portion (61A) can be modified by cutting with the inner edge (72a) of the aforementioned cutting hole (72) as a reference. Thus, the height of the aforementioned artificial tooth portion (61) can be modified in accordance with the vertical diameter of the patient's mouth.

[0126] Reference Figure 16bWhen the artificial teeth (61bb) of the modified artificial tooth portion (61) are fitted with the mating grooves (62a) formed in the artificial gingival portion (62) and bonded with adhesive, the overdenture (60) as the final dental restoration is manufactured. Here, the inner surface (62b) of the artificial gingival portion (62) fits with the gingival portion of the restoration object and forms the mounting portion. At this time, the bottom surface (62c) of the mating groove (62a) and the inner surface (62b) of the artificial gingival portion (62) can be formed in accordance with the placement interval (w4). In addition, taking into account the thickness difference between the cutting guide (70) and the artificial gingival portion (62) that has a step difference in accordance with the placement interval (w4), the artificial teeth (61bb) are further modified and cut in accordance with the placement interval (w4) preset in the three-dimensional planning image (M).

[0127] As described above, in this invention, the artificial tooth portion (61A) is pre-prepared with standardized dimensions without a complex design process, thereby improving manufacturing convenience. Furthermore, each root tip (61c) is guided by a cutting guide (70) manufactured based on the aforementioned three-dimensional planning image (M) and cut and modified in a manner suitable for the patient's vertical orifice diameter. Therefore, by modifying the tooth in a manner suitable for each patient's vertical orifice diameter, both cost-effectiveness and the precision of the dental restoration can be significantly improved.

[0128] At this point, it is preferable to further manufacture an index jig (80) for simultaneously aligning each artificial tooth (61b) of the aforementioned artificial tooth portion (61A). In the index jig (80), an alignment jig groove (81) is formed based on the three-dimensional shape information of the occlusal end (m61d) of the aforementioned virtual tooth displayed on the aforementioned three-dimensional planning image (M). As a result, each of the aforementioned artificial teeth (61b) and (61bb) is simultaneously aligned and engaged between the index jig (80) and the aforementioned cutting guide (70) / artificial gingiva portion (62), thus the cutting of each of the aforementioned artificial teeth (61b) or the attachment of each of the aforementioned artificial teeth (61bb) can be quickly guided to a precise position.

[0129] Figure 17 This is a schematic diagram illustrating the fixing process of a clip according to an embodiment of the present invention.

[0130] Reference Figure 17An mounting portion (65) is formed on the inner surface of the artificial gingival portion (62) based on the virtual support device (m40), and a fixing hole (66) communicating with the mounting portion (65) is formed. The mounting portion (65) is stepped, including a first mating portion (65a) corresponding to the shape of the support base (1410) and a second mating portion (65b) corresponding to the shape of the fixing rod (1430). Therefore, when the artificial gingival portion (62) is combined with the support device (1400), the position can be aligned. In addition, the end of the clip (67) is inserted into the inside of the fixing hole (66) and fixed by resin (r) filled and cured in the fixing hole (66). Therefore, when the clip (67) fixed to the inside of the mounting part (65) engages with the fixing rod (1430), the artificial gingival part (62) and / or the overdenture (60) are supported by the bracket device (1400) so as to maintain the state of installation in the oral cavity.

[0131] At this time, the clip (67) is engaged in the predetermined position of the fixing rod (1430), and when the artificial gingival portion (62) is installed so that the support device (1400) is inserted into the mounting portion (65), the end of the clip (67) can be positioned by inserting into the fixing hole (66). In addition, when the resin (r) fills and cures inside the fixing hole (66), the clip (67) can be fixed to the artificial gingival portion (62).

[0132] Alternatively, the artificial gingival portion (62) is installed such that the support device (1400) is inserted into the mounting portion (65), and the clip (67) can be inserted through the fixing hole (66) and engaged with the fixing rod (1430). Furthermore, when the resin (r) fills and cures inside the fixing hole (66), the end of the clip (67) can be embedded and fixed in the fixing hole (66). In this case, the fixing hole (66) extends through with an inner circumference wider than the cross-sectional area of ​​the clip (67), and the clip (67) is mounted on the clip holder and can be introduced into the inside of the fixing hole (66).

[0133] Preferably, the resin (r) is made of the same material used in manufacturing the artificial gingiva (62). Therefore, when the fixing hole (66) is filled with the resin (r) and cured, the high fusion between the same materials increases the fixing force. Furthermore, the outer surface of the end of the clip (67) can be finely textured. Therefore, as the contact area with the resin (r) increases, the adhesion can be further increased. Here, it is preferable to cover the surface of the gingiva (2) of the restoration object with a rubber dam to prevent the resin (r) from flowing towards the gingival tissue side before curing.

[0134] As described above, the present invention is not limited to the various embodiments described above. Those skilled in the art can implement the present invention in any way without departing from the scope of protection claimed in the claims of the present invention, and such modifications fall within the scope of the present invention.

[0135] Industrial applicability

[0136] This invention can be applied to the manufacturing industry of dental restoration products.

Claims

1. A method for implanting a dental prosthesis, characterized in that, include: The first step is to generate a three-dimensional planning image, which is formed by overlaying and integrating a scanned image including three-dimensional shape information of the maxilla and mandible with a CT image. At least one side of the maxilla and mandible is the gingiva of the restoration target. Multiple implant placement information is set along the dental arch in the three-dimensional planning image. An implantation guide device is designed and manufactured. The implantation guide device includes a flattening guide for guiding alveolar bone flattening and a surgical guide for guiding implant placement. The second step involves flattening the alveolar bone under the guidance of the implantation guide device, implanting the dental implant, and fixing the support device, which includes a support abutment and a fixing rod via an insertion portion, to the upper side of the dental implant. The third step is to modify the occlusion of the temporary denture between the maxilla and mandible so that a temporary mounting portion for inserting the support device is formed on the inner surface of the temporary denture. The temporary denture is softened during heat treatment at a temperature within a pre-set softening temperature range so as to deform by occlusal pressure to correspond to the patient's vertical mouth diameter. The fourth step is to scan the modified temporary denture to obtain a scanned image, so that the three-dimensional shape information of the temporary mounting part is exposed to the outside, thereby obtaining the modified scanned image, and exchanging the three-dimensional shape information of the temporary mounting part with the virtual support device. and The fifth step involves fixing the artificial tooth portion to the artificial gingiva to manufacture the final dental restoration. The inner surface of the artificial gingiva is formed with an mounting portion based on the virtual support device and is fixed with a clip that engages with the fixing rod.

2. The method for implanting a dental prosthesis according to claim 1, characterized in that, The first step mentioned above includes the following steps: The virtual dental implants selected from the digital library based on the aforementioned CT images are virtually arranged in a manner corresponding to the aforementioned implantation information. A virtual implantation guide sleeve is overlapped with and integrated into the aforementioned scan images for storage. The virtual implantation guide sleeve is spaced at a predetermined offset distance above the upper end of the virtual dental implant and is virtually arranged concentrically with the virtual dental implant. The design information for the surgical guide is generated, which has a virtual incorporation hole corresponding to the outer periphery of the aforementioned virtual implantation guide sleeve.

3. The method for implanting a dental prosthesis according to claim 2, characterized in that, The first step mentioned above includes the following steps: From the multiple elimination models standardized to semi-cylindrical shapes corresponding to anatomical dentition stored in the aforementioned digital library, an elimination model matching the gingival region of the aforementioned restoration object is extracted; and In the three-dimensional shape information of the gingiva of the above-mentioned restoration object, the part that overlaps with the above-mentioned elimination model is eliminated to form a virtual flat surface.

4. The method for implanting a dental prosthesis according to claim 3, characterized in that, The first step mentioned above includes generating design information for the planarization guide, wherein the planarization guide has an inner surface contour formed based on the three-dimensional shape information of the gingiva of the restoration object, and a flat guide surface is formed along the edge of an opening at a position corresponding to the virtual flat surface, the flat guide surface and the virtual flat surface being located on the same plane.

5. The method for implanting a dental prosthesis according to claim 4, characterized in that, The first step mentioned above includes the following steps: The aforementioned elimination model is extracted and virtually arranged based on the occlusal planes of the maxilla and mandible, and at least one facet of the elimination model is virtually adjusted to correspond to a second reference plane, the second reference plane being spaced downwards from the first reference plane corresponding to the upper end of the aforementioned virtual implant by a predetermined excess interval; and The aforementioned virtual flat surface is virtually modified in a manner corresponding to the aforementioned second reference surface.

6. The method for implanting a dental prosthesis according to claim 5, characterized in that, In the first step described above, the extra spacing is set with reference to the three-dimensional shape information. In the three-dimensional shape information, the virtual dental implant protrudes downward based on the first reference surface, so that the inner surface of the surgical guide manufactured based on the design information of the surgical guide is separated from the outer surface of the flattened alveolar bone.

7. The method for implanting a dental prosthesis according to claim 5, characterized in that, The first step mentioned above includes the following steps: Virtual bases are arranged to match the aforementioned offset distances; and One side of the elimination model is virtually modified to correspond to the second reference surface, wherein the lower part of the second reference surface and the virtual base are respectively set at the lower end of the offset distance.

8. The method for implanting a dental prosthesis according to claim 5, characterized in that, In the first step described above, the design information of the surgical guide is based on the three-dimensional shape information of the gingiva of the restoration object and the virtual flat surface to form the inner surface contour of the surgical guide.

9. The method for implanting a dental prosthesis according to claim 5, characterized in that, In the first step described above, the design information of the surgical guide is used to form the inner surface contour of the surgical guide based on the outer surface contour of the flattened guide.

10. The method for implanting a dental prosthesis according to claim 5, characterized in that, In the first step described above, the design information for the surgical guide is generated by a method comprising the following steps: The step of setting up a virtual guide body part that forms an inner facial contour based on the three-dimensional shape information of the gingiva of the above-mentioned restoration object and has a virtual docking hole corresponding to the outer periphery of the above-mentioned virtual implantation guide sleeve. The step of virtually arranging a plurality of virtual cutting blocks with a three-dimensional shape that protrudes in thickness and has one side matching the first reference plane and the other side matching the second reference plane around the aforementioned guide body portion. The step of forming cutting slots by eliminating multiple locations in the overlapping area of ​​the virtual cutting block and the virtual guide body, wherein the physical surgical guides are made as a pair by separating them through the cutting slots, and the lower part after separation is formed as a first body as a flattened guide.

11. The method for implanting a dental prosthesis according to claim 1, characterized in that, The first step mentioned above includes the following steps: The scanned images and CT images are overlaid and integrated based on a pre-defined occlusal plane; Multiple virtual dental implants selected and extracted from the digital library are virtually arranged along the dental arch, such that the upper ends of each of the multiple virtual dental implants are aligned with a first reference surface that is separated from the occlusal plane by a pre-defined vertical diameter. From the multiple elimination models standardized to semi-cylindrical shapes corresponding to anatomical dentition stored in the aforementioned digital library, an elimination model matching the gingival region of the aforementioned restoration object is extracted; and The elimination model extracted by the virtual arrangement is such that one side of the elimination model matches the occlusal plane and the other side matches the first reference plane, and the overlapping part of the three-dimensional shape information of the gingival part of the restoration object and the elimination model is eliminated, thereby virtually replacing the upper side of the three-dimensional shape information of the gingival part of the restoration object with a virtual flat surface. Based on the three-dimensional shape information of the gingiva of the restoration object and the virtual flat surface mentioned above, design information for a flattening guide for alveolar bone flattening, design information for a surgical guide for guiding implant placement, and design information for the dental restoration are set.

12. The method for implanting a dental prosthesis according to claim 1, characterized in that, The first step mentioned above includes setting the bending path information of the fixing rod, which is bent at both ends at a predetermined angle, and setting the implantation information of the dental implant corresponding to the anterior tooth side implantation point and the molar side implantation point via the bending path information. The second step mentioned above includes the following steps: Prepare a fixed clamp base and a pivot guide clamp base. The fixed clamp base has a receiving groove. An alignment protrusion is formed on the inner periphery of the receiving groove. The alignment protrusion is inserted into and cooperates with the insertion part, so that the fixed clamp base is linked with the support base. The pivot guide clamp base is rotatably supported by the support base. The pair of support bases arranged corresponding to the implantation point on the anterior tooth side are aligned with the fixing rods so that the above-mentioned straight connection is made through the insertion part, and the aligned pair of support bases are fixed to the anterior tooth side by the pair of fixing clamp bases. Replace the fixing clamp base on the support base fixed to the anterior tooth side with the pivoting guide clamp base, and attach the fixing clamp base to the upper end of the support base arranged at the adjacent molar side implantation point. The bracket base supported on the fixed clamp base is fixed to the molar side, and the fixed clamp base is rotated and restricted to be in straight communication with the alignment groove of the pivot guide clamp base.

13. The method for implanting a dental prosthesis according to claim 12, characterized in that, The second step mentioned above includes the following steps: The aforementioned fixing clamp base is reassembled onto the upper ends of the aforementioned support base fixed to the aforementioned anterior tooth side and molar side, and integrally connected by curable resin. The bracket simulation piece having an angle alignment portion corresponding to the above-mentioned insertion portion is inserted into each of the above-mentioned receiving slots and integrally connected by a curable material. The fixed rods, which are bent in accordance with the bending path information described above, are simultaneously inserted into the respective angle alignment portions of the integrally connected bracket simulation component to determine and correct the bending error.

14. The method for implanting a dental prosthesis according to claim 1, characterized in that, The fifth step mentioned above includes the following steps: The artificial gingival portion, which has a through-hole that communicates with the aforementioned mounting portion, is installed into the oral cavity where the aforementioned support device is installed. The clip is fixed to the artificial gingiva by embedding the end of the clip to the fixing rod by filling and curing the fixing hole with resin.

15. The method for implanting a dental prosthesis according to claim 1, characterized in that, The first step mentioned above includes the following steps: A virtual baseline gingival region is virtually arranged, the contour of the inner surface of the virtual baseline gingival region corresponding to the three-dimensional shape information of the gingival region of the object to be restored. The portion of the virtual tooth exceeding the vertical diameter that overlaps with the virtual baseline gingival region is defined as the elimination area; and A virtual mating surface is set along the inner periphery of the area to be eliminated, and a cutting guide including a cutting hole formed through the virtual mating surface and an artificial gingiva including a mating groove corresponding to the virtual mating surface are designed and manufactured. The fifth step mentioned above includes the following steps: The outer circumference of the prepared artificial tooth is engaged with the inner circumferential surface of each of the aforementioned cutting holes in the cutting guide; and The root end of the artificial tooth is cut and modified with the inner edge of the cutting hole as a reference. The root end of the artificial tooth protrudes into the inner surface of the cutting guide to modify the height of the artificial tooth in accordance with the vertical diameter.

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