KR20220159563A - Dental Implant Structure with Dual Retention Structure and Digital Prosthetic System for Manufacturing Dental Implant Structure - Google Patents

Abstract

The present invention relates to a dental implant structure which has a dual retaining structure and is capable of compensating an implant placement angle, so as to be specialized for a digital prosthetic system. The dental implant structure comprises: an abutment (200) which is coupled to a fixture (100), and is formed with one or more through holes (211a); an elastic body (221) which is inserted into and installed in the abutment (200), and is capable of contracting and expanding toward the inside and outside of the radius thereof; one or more supports (222) which are inserted into the abutment (200) in accordance with the contraction of the elastic body (221), or project out of the abutment (200) in accordance with the expansion of the elastic body (221); and an artificial tooth (crown, 300) which is coupled to the abutment (200) so as to cover an upper portion of the abutment (200), and has a support coupling groove (313) formed on an inner surface thereof to which a support (223) is coupled.

Description

Dental Implant Structure with Dual Retention Structure and Digital Prosthetic System for Manufacturing Dental Implant Structure}

The present invention relates to a dental implant structure that has a double retaining structure and is capable of compensating an implant placement angle to be specialized for a digital prosthetic system.

Dental implants are generally composed of a fixture placed in the alveolar bone, an abutment connected to the fixture to support the crown, a coping that serves as a frame between the abutment and the artificial tooth, and the artificial tooth. (crown).

In the implant prosthetic process, an abutment, an internal crown, and an artificial tooth are required, and the internal crown and artificial tooth are made into one body. This is commonly referred to as an upper prosthesis, and an abutment connects the fixture and the upper prosthesis.

The retention structure of conventional implant prosthesis can be classified into screw retained type, cement retained type, and screw-cement retained prosthesis type according to the retention structure of the upper prosthesis and abutment. have.

However, in the case of a screw-retained prosthesis, there is a problem in that function and aesthetics deteriorate due to the existence of a screw hole in the occlusal surface, and frequent loosening and fracture of the screw occur. It is difficult to repair when damaged, and the implant procedure fails due to infection and bone resorption due to residual cement present in the gums. Due to the screw access hole, aesthetics are poor and occlusal surface formation is difficult.

On the other hand, in the traditional prosthetic prosthesis manufacturing method, it is common that a worker manually proceeds from oral impression taking to final prosthesis manufacturing. The quality of the prosthesis varies depending on the complicated work process and individual capacity, and even if the same person manufactures it, it is difficult to guarantee the consistency of the work, and the manpower and time invested in the production process are a great waste of time.

The CAD/CAM (Computer Aided Design/Manufacturing) system, which has been used for industrial purposes, has been introduced to the dental field, and oral scanners that can acquire patient's oral information in 3D shapes and titanium, ceramic, and zirconia processing systems have been introduced. Dental digital equipment such as milling equipment has been disseminated. This development has created a new paradigm called digital dentistry, and it has become possible to manufacture more accurate prosthetics while maximizing the efficiency of working time by utilizing digital technology in prosthesis manufacturing.

On the other hand, recently, a new implant structure has been proposed to improve the problems of existing implant prosthesis (screw-retained type, cement-retained type, screw-cement composite type).

The link-and-screw retention structure (see Fig. 1) uses a double retention structure between the upper prosthesis and the abutment using a link and a screw. When vertical and lateral pressures occur, which are the disadvantages of existing implant prostheses, screw loosening, fracture, and It has the advantage of preventing the occurrence of sink down and preventing complications due to concentration of occlusal force because the occlusal force can be dispersed by the abutment during functional exercise. However, since the production of upper prostheses that fit the link is only possible in specialized laboratories, it is difficult to manufacture prostheses, and there are restrictions on the application of prostheses depending on the angle of implant placement. There are downsides.

The retention structure (see Fig. 2) by the expansion of air and the vertical angle (friction) of the abutment is manufactured so that a predetermined space (sac) is formed on the inner surface of the upper prosthesis, and the expansion of air and the vertical angle (friction) of the abutment ) is used. During functional exercise, it is possible to prevent excessive load from being applied to the fixture by dispersing the occlusal force by action and reaction. However, in order to form an air sac between the abutment and the upper prosthesis, it is difficult to manufacture the prosthesis because it can only be manufactured in a specialized laboratory. In this case, not only additional costs are required, but also inconvenience to the patient.

The retention structure by the undercut of the sleeve made of shape memory alloy (see Fig. 3) uses the characteristics of the shape memory alloy to lock and release the sleeve in the undercut of the abutment and the inner tube, thereby enabling the attachment and detachment of the upper prosthetic appliance and the abutment. This is a possible structure. However, when the upper prosthesis and abutment are separated for repair or hygiene purposes, resistive heating is required in the inner tube, and an activator probe is required for this purpose. In addition, in order to produce resistive heat, two large holes must be formed on the lingual side of the prosthesis, which has the disadvantage of causing discomfort to the patient.

Korean Patent Registration No. 10-1633258, a prior art by the present applicant, relates to an implant-coupled prosthesis that is easy to operate and correct, but due to the existence of the crown attachment part 210 to which the crown 20 is attached, the height of the implant structure is reduced. There was a limit that had to be increased, and this had a disadvantage that it was difficult to apply to patients with a narrow intermaxillary distance. In addition, in the prior art, by adopting a method in which the crown 20 is attached to the crown attachment portion 210 using an adhesive, there is a disadvantage in that the holding force between the crown and the abutment is not strong.

Accordingly, the demand for an implant system specialized for digital prosthesis is increasing while the disadvantages of the existing implant prosthesis are resolved.

Korean Patent Publication No. 10-2014-0120032 (2014.10.13) Korea Patent Document No. 10-1633258 (2016.06.20) Korea Patent Document No. 10-1633259 (2016.06.20) Korea Patent Document No. 10-1386560 (2014.04.11)

The present invention has been made to solve the above problems.

Specifically, in the present invention, the implant structure includes a retaining force providing member providing a retaining force in the lateral direction and a screw providing a retaining force in the longitudinal direction, so that the retaining force between the abutment and the artificial tooth is increased through the double retaining structure, Its purpose is to provide an implant structure that solves the disadvantages of conventional implant structures (screw-retained type, cement-retained type, screw-cement composite type).

In addition, an object of the present invention is to provide an implant structure that can be easily applied to patients with a narrow intermaxillary distance as the height of the abutment to which the artificial tooth is coupled is lower than that of the conventional abutment.

In addition, the present invention is to provide an implant structure capable of compensating for a wider range of implant placement angles because the upper part of the abutment to which the artificial tooth is coupled has a higher inclination angle (20 to 24 degrees) with respect to the longitudinal direction than the conventional abutment. It has a purpose.

In addition, an object of the present invention is to provide an implant structure that is easy to operate by adopting a coupling structure in which an artificial tooth is fitted without additional screw fastening in the course of coupling the abutment to the abutment.

In addition, the present invention is to provide an implant structure further provided with a link for preventing the phenomenon of wear of the artificial tooth due to friction between the screw and the artificial tooth during the screw coupling process for providing the retaining force in the longitudinal direction to the implant structure. It has a purpose.

In addition, an object of the present invention is to provide a method for manufacturing a dental implant structure using a digital prosthetic system.

In addition, an object of the present invention is to provide a digital prosthetic manufacturing system for manufacturing a dental implant structure.

In addition, an object of the present invention is to provide a computer program stored in a computer readable recording medium to execute a method for manufacturing a dental implant structure.

One embodiment of the present invention for solving the above problems is coupled to the fixture 100 inserted into the alveolar bone, the abutment 200 having one or more through holes 211a extending in the transverse direction, the An elastic body 221 inserted into the abutment 200 and capable of shrinking and expanding toward the inside and outside of the radius, located inside the through hole 211a and outside the elastic body 221, to contraction of the elastic body 221 One or more supports 222 that are inserted into the abutment 200 or protrude out of the abutment 200 according to the expansion of the elastic body 221 and the abutment 200 to cover the upper portion of the abutment 200 Provided is a dental implant structure including a crown 300 coupled to, and having a support coupling groove 313 coupled to the support 223 on the inner surface thereof.

In one embodiment, the abutment 200 includes an upper abutment 211 configured to decrease in diameter toward the upper side, and a lower abutment 212 configured to increase in diameter toward the upper side while being connected to the lower portion of the upper abutment 211 ), and the through hole 211a may pass through the upper abutment 211 in the transverse direction.

In one embodiment, the upper abutment 211 may be configured to have an angle of 20 to 24 degrees with respect to the longitudinal direction and decrease in diameter toward the upper side.

In one embodiment, the upper abutment 211 may have a height of 1.8 mm to 2.2 mm.

In one embodiment, the dental implant structure further includes a screw 240, the abutment 200 is formed with a first screw through hole 214 extending in the longitudinal direction, the artificial tooth 300 ), a second screw through hole 314 extending in the longitudinal direction and aligned with the first screw through hole 214 is formed, and the screw 240 connects to the first screw through hole 214 and the first screw through hole 214. It may pass through the second screw through hole 314 and be coupled to the fixture 100 .

In one embodiment, a link 230 coupled to an upper portion of the abutment column 200 and conformal to the upper portion of the abutment column 200 may be further included.

In one embodiment, the dental implant structure further includes a screw 240, the abutment 200 is formed with a first screw through hole 214 extending in the longitudinal direction, the artificial tooth 300 ) has a second screw through hole 314 extending in the longitudinal direction and aligned with the first screw through hole 214, and the link 230 includes the first screw through hole 214 and the first screw through hole 214. A third screw through hole 234 aligned with the second screw through hole 314 is formed, and the screw 240 passes through the first to third screw through holes to be coupled to the fixture 100. can

In one embodiment, the support coupling groove 313 may have a continuous shape extending along the circumferential direction from one point on the inner surface of the artificial tooth 300 .

In addition, the present invention is a method for manufacturing a dental implant structure, in which the scanner 10 scans an oral cavity or an oral model to be placed, and the registration device 21 pre-applies to the scanned image formed by the scanning of the scanner 10. A step of matching the determined library image, wherein the library image includes an abutment coupled to a fixture and a support protruding from an outer surface of the abutment and extending in a circumferential direction, the design device 22 to the library image Provides a method for manufacturing a dental implant structure, including generating an artificial tooth image to be combined and milling the artificial tooth by a milling device 23 according to the artificial tooth image generated by the design device 22 .

In one embodiment, the artificial tooth image may include a supporter coupling groove continuously extending along the circumferential direction on an inner surface, and a second screw through hole aligned with the first screw through hole of the abutment.

In one embodiment, the library image may further include a link coupled to an upper portion of the abutment and having a third screw through hole aligned with the first screw through hole and the second screw through hole.

In addition, the present invention provides a dental implant structure, manufactured using the manufacturing method described above.

In addition, the present invention is a dental implant manufacturing system that performs the above-described manufacturing method, wherein a scanner 10 scans an oral cavity or an oral model of a target to be placed, and a library pre-determined in a scanned image formed by the scanning of the scanner 10 A matching device 21 for matching images, a design device 22 for generating an artificial tooth image to be combined with the library image included in the image registered by the matching device, and an artificial tooth created by the design device 22 Provided is a dental implant structure manufacturing system including a milling device 23 for milling an artificial tooth according to a tooth image.

In addition, the present invention provides a computer program stored in a computer readable recording medium to execute the above-described method for manufacturing a dental implant structure.

According to the present invention, the implant structure includes a retaining force providing member providing a retaining force in the lateral direction and a screw providing a retaining force in the longitudinal direction, so that while the retaining force between the abutment and the artificial tooth is increased through the double retaining structure, the conventional It is possible to solve the disadvantages of implant structures (screw-retained type, cement-retained type, screw-cement composite type).

In addition, since the height of the abutment to which the artificial tooth is coupled is lower than that of the conventional abutment, it can be easily applied to patients with a narrow intermaxillary distance.

In addition, the inclined angle (20 to 24 degrees) of the upper part of the abutment to which the artificial tooth is coupled with respect to the longitudinal direction is higher than that of the conventional abutment, so that a wider range of implant placement angle compensation is possible.

In addition, in the process of coupling the artificial tooth to the abutment, as a coupling structure is adopted without separate screw fastening, the procedure is simple.

In addition, by further providing a link, it is possible to prevent a phenomenon in which the artificial tooth is worn due to friction between the screw and the artificial tooth during the screw coupling process for providing the retaining force to the implant structure in the longitudinal direction.

In addition, as the coupling between the abutment and the artificial tooth is performed in a relatively simple coupling method, it is possible to easily apply it to a digital prosthetic system for manufacturing artificial teeth.

1 to 3 are views for explaining various methods (screw-retained type, cement-retained type, screw-cement composite type) for improving the bonding force between the upper prosthesis and the abutment in a conventional implant prosthesis.
Figure 4 is an exploded perspective view for explaining the implant structure according to the first embodiment of the present invention.
5 is a cross-sectional view illustrating the implant structure of FIG. 4 in more detail.
6 is a view showing an exploded perspective view (a) and a combined perspective view (b) of the implant structure of FIG.
FIG. 7 is a view for explaining how the implant structure of FIG. 4 is placed in an alveolar bone.
8 is a cross-sectional view (b) of a combined state with a drawing (a) for explaining a coupling process of the implant structure of FIG.
9 is an exploded perspective view for explaining an implant structure according to a second embodiment of the present invention.
10 is a cross-sectional view illustrating the implant structure of FIG. 9 in more detail.
11 is a view showing an exploded perspective view (a) and a combined perspective view (b) of the implant structure of FIG.
12 is a view for explaining how the implant structure of FIG. 9 is placed in alveolar bone.
13 is a cross-sectional view (b) of a combined state with a drawing (a) for explaining a coupling process of the implant structure of FIG. 9 .
14 is a schematic block diagram for explaining an implant structure manufacturing system according to an embodiment of the present invention.
15 is a flowchart illustrating a method of manufacturing an implant structure according to an embodiment of the present invention.
16 to 18 are diagrams for explaining a series of procedures for manufacturing an implant structure in a computer program according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, the system is to be understood as a "thing".

Hereinafter, the term "longitudinal direction" refers to a direction perpendicular to the gum where the implant structure is placed, and the term "transverse direction" refers to a direction parallel to the gum where the implant structure is placed.

1. Dental implant structure

A dental implant structure according to an embodiment of the present invention will be described in detail with reference to FIGS. 4 to 13 .

Referring to FIG. 4 , the dental implant structure according to the first embodiment of the present invention includes a fixture 100 , an abutment 200 and an artificial tooth 300 .

The fixture 100 is implanted in the alveolar bone of a target to be implanted and provides a supporting force so that the implant structure can be stably maintained. A screw thread 101 is formed on the outer surface, and it is possible to provide a supporting force to the implant structure due to engagement between the screw thread 101 and the alveolar bone.

The abutment 200 is positioned between the fixture 100 and the artificial tooth 300, and serves to connect the fixture 100 and the artificial tooth 300.

Referring to FIG. 4 , the abutment 200 includes a body 210 , a retaining force providing member 220 and a screw 240 .

The body 210 includes an upper abutment 211 formed to decrease in diameter toward the upper side, and a lower abutment 212 formed so that the diameter decreases toward the lower side while being connected to the upper abutment 211 (ie, the diameter increases toward the upper side). ) and a coupling part 213 coupled to the fixture 100.

In the upper abutment 211, the lower abutment 212, and the coupling portion 213, a first screw through hole 214 penetrating them in the longitudinal direction is formed, and the screw 240 is the first screw through hole 214 It passes through and is coupled to the fixture 100. That is, as the screw 240 passes through the first screw through hole 214 and is coupled to the fixture 100, the fixture 100 - the abutment 200 - the artificial tooth 300 is coupled in the longitudinal direction (vertical direction) to provide a holding force (fixing force).

Inside the body 210, the holding force providing member 220 is inserted and installed. The holding force providing member 220 includes an elastic body 221 and a support body 222 .

A through hole 211a is formed on one surface of the upper abutment 211 and communicates with the first screw through hole 214 and penetrates the one surface of the abutment 211 in the lateral direction (horizontal direction).

The holding force providing member 220 is installed at a position aligned with the through hole 211a in the transverse direction, and is installed in the order of the elastic body 221 - the support body 222 from the inside to the outside. More specifically, the support 222 is installed at a position inside the through hole 211a and outside the elastic body 221 .

The elastic body 221 may have, for example, a ring shape, and as shown in FIG. 4 , it may extend in a circumferential direction and then have a partially disconnected shape. Due to the presence of the disconnected portion 221a in the elastic body 221, the elastic body 221 contracts when an external force is applied to the abutment 200, and the elastic body 221 returns to its original shape when the applied external force is removed. do. It may be formed of a material having a certain restoring force so as to contract when an external force is applied, and for example, an elastic body 221 made of nitinol may be applied to the present invention.

The support 222 is installed at a position outside the elastic body 221 while being inside the through hole 211a, and provides a holding force to the artificial tooth 300 in the transverse direction. This will be described in detail with reference to FIG. 5 .

The support 222 may have a sphere shape, for example, and the diameter of the through hole 211a may decrease from the inside toward the outside. In particular, the diameter of the outer end of the through hole 211a is smaller than the diameter of the support 222 so that the support 222 does not pass through the through hole 211a and is not separated, and only a part of the support 222 extends through the abutment 210. It protrudes from and provides a holding force in the transverse direction by coming into contact with the artificial tooth 300. In order to minimize abrasion caused by contact between the support 222 and the artificial tooth 300, the support 222 may be formed of a material having the same strength as the artificial tooth 300, for example, zirconia. ) can be formed.

However, it is not limited to the above example, and the holding force providing member 220 contracts when an external force is applied and protrudes from the abutment 200 when the applied external force is removed to contact the artificial tooth 300. It will be said that any configuration may be applied.

The abutment 200 according to the present invention has a lower height (h) compared to the conventional implant abutment, so it can be applied to patients with a narrow intermaxillary distance, and the inclined angle (α) with respect to the longitudinal direction is large, so the implant placement angle can be compensated.

Specifically, the height (h) of the upper abutment 211 may be 1.8 mm to 2.2 mm, more specifically, 2 mm.

As the height (h) of the upper abutment 211 is lower, it is possible to compensate for the narrow intermaxillary distance (maxillary-mandibular distance) of the implantation target, so it is possible to secure an implant restoration space even in the implantation target having a narrow intermaxillary distance. .

In addition, the angle α at which the outer surface of the upper abutment 211 is inclined with respect to the longitudinal direction may be 20 degrees to 24 degrees, and more specifically, 22 degrees.

By configuring the outer surface of the upper abutment 211 in a tapered shape inclined at about 20 to 24 degrees, it is possible to compensate for the implant placement angle. For example, when using the upper abutment 211 inclined at 22 degrees, it is possible to compensate the implant placement angle within the range of 44 degrees with respect to the longitudinal direction, which is possible in the conventional implant structure. Compared to that, it has the advantage that it can be applied to various clinical cases.

The screw 240 includes a stepped portion 241, an extension portion 242, and a screw thread 243, and the second screw through hole 314 of the artificial tooth 300 and the first screw through hole of the abutment 200 By passing through 214 and being coupled to the fixture 100, a fixing force in the longitudinal direction (vertical direction) is applied to the abutment 200 and the artificial tooth 300.

The screw thread 243 of the screw 240 is screwed with the screw thread (not shown) on the inner surface of the fixture 100 to form a mutually firm coupling, and the stepped portion 241 is formed to have a larger diameter than the extension portion 242 It serves to limit the insertion depth of the screw 240. To this end, it is preferable that the diameters of the first screw through hole 214 and the second screw through hole 314 are at least larger than the diameter of the extension part 242 and smaller than the diameter of the stepped part 241 .

The artificial tooth 300 is coupled to the abutment 200 and exposed above the gum to serve as a tooth to be placed. The outer appearance may have the same shape as the actual tooth, and the inside has a unique shape for coupling with the abutment 200 according to the present invention.

4 and 5, in the artificial tooth 300, a screw input hole 311 into which a screw 240 is inserted is formed extending in the longitudinal direction, and is connected to the screw input hole 311 so that the abutment 200 The abutment coupling groove 312 coupled to the upper abutment 221 extends in the longitudinal direction, and the support coupling groove 313 coupled to the support 222 is connected to both sides of the abutment coupling groove 312 in the transverse direction It can be formed extending toward.

Here, the screw insertion hole 311 is preferably formed in the central portion of the upper surface of the artificial tooth 300, and the support coupling groove 313 extends in the radial direction along the outer surface of the abutment coupling groove 312 and continuously It is preferable to be formed into a shape.

As the inside of the artificial tooth 300 is formed in a structure including a screw input hole 311, abutment coupling groove 312, and support body coupling groove 313, artificial tooth 300 can be manually inserted without a separate coupling mechanism. When pressing toward the abutment 200 while gripping, the elastic body 221 contracts inward in the radial direction so that the artificial tooth 300 can be coupled to the upper abutment 211, and when the force applied to the artificial tooth 300 is released As the elastic body 221 expands outward in the radial direction and the support body 222 is inserted into the support body coupling groove 313 of the artificial tooth 300, the coupling may be completed. When the support 222 and the support coupling groove 313 are coupled to each other, the support 222 applies a fixing force to the artificial tooth 300 in a lateral direction (transverse direction). Therefore, even if a predetermined force is applied to the artificial tooth 300 due to a masticatory action or the like, it is possible for the artificial tooth 300 to be continuously maintained on the abutment 200 .

On the other hand, since the support coupling groove 313 according to the present invention is formed continuously while extending in the radial direction along the outer surface of the abutment coupling groove 312, the relative position of the artificial tooth 300 with respect to the abutment 200 is Even if it is slightly twisted than the original implantation plan, the support 222 of the abutment 200 can be stably coupled to the support coupling groove 313 of the artificial tooth 300.

The dental implant structure according to the second embodiment of the present invention is characterized in that it further includes a link 230 in addition to the dental implant structure of the first embodiment.

In the dental implant structure of the first embodiment, the screw 240 passes through the screw through hole and is coupled to the fixture 100, so that the abutment 200 and the artificial tooth 300 have a fixing force in the longitudinal direction (vertical direction) It has been described that it can be authorized.

As shown in FIG. 8 , in the dental implant structure of the first embodiment, the screw 240 and the artificial tooth 300 come into direct contact. While the screw 240 is formed of a metal material, since the artificial tooth 300 is formed of a material having weaker strength than a metal such as zirconia, the process of tightening the screw 240 or the artificial tooth 300 removes food. Friction between the screw 240 and the artificial tooth 300 may continuously occur during chewing. In this case, a problem of wear of the artificial tooth 300 may occur, and in the dental implant structure according to the second embodiment, in order to solve the above problem, it is coupled to the upper abutment 211, and a metal such as the abutment 200 It is characterized by further comprising a link 230 made of a material.

The link 230 is coupled to the upper portion of the upper abutment 211 , and an outer surface of the link 230 may conform to the outer surface of the upper abutment 211 . That is, like the upper abutment 211, the outer surface of the link 230 may also have an inclined angle of 20 degrees to 24 degrees with respect to the longitudinal direction and may have a shape in which the diameter decreases toward the upper side.

That is, the angle α at which the outer surface of the link 230 is inclined with respect to the longitudinal direction may be 20 degrees to 24 degrees, more specifically 22 degrees. Therefore, even if the link 230 is further provided, it is possible to compensate for the implant structure placement angle as in the first embodiment.

As shown in FIG. 13, the link 230 is positioned between the screw 230 and the artificial tooth 300, so that the screw 240 and the artificial tooth 300 do not come into direct contact. That is, the artificial tooth 300 is not worn in the process of applying the fixing force in the longitudinal direction by the screw 230, and even after the implant structure is placed, the artificial tooth 300 due to friction between the screw 230 and the artificial tooth 300 It is possible to minimize the phenomenon of wear. For the passage of the screw 230, a third screw through hole 234 extending in the longitudinal direction is formed in the link 230.

The dental implant structure of the second embodiment has higher durability than the dental implant structure of the first embodiment as the link 230 is further provided, but the intermaxillary distance is relatively wide as the height of the abutment 200 is formed high. It is desirable to apply to the patient.

2. Method and system for manufacturing dental implant structure

Referring to Figures 14 and 15, a method for manufacturing a dental implant structure according to an embodiment of the present invention will be described in detail. A dental implant structure manufactured according to an embodiment of the present invention may be, for example, an artificial tooth.

For manufacturing a dental implant structure according to an embodiment of the present invention, a scanner 10 and a manufacturing device 20 are used.

The scanner 10 is configured to scan an oral cavity of an implant structure target or an oral model having a shape corresponding to the oral cavity of the implant structure to generate a scan image according to a scan result.

When a scan is performed by the scanner 10, a 3D scan image may be generated (see FIG. 16), and the manufacturing apparatus 20 creates an artificial tooth using the generated scan image.

When scanning is performed by the scanner 10, the manufacturing apparatus 20 generates a milling image, which is a basis for milling, using the scanned image generated by the scanner. Referring to FIG. 14 , the manufacturing device 20 includes a matching device 21, a design device 22, a milling device 23, an input device 24, an output device 25, and a storage device 26. .

Prior to scanning by the scanner 10, through the input device 24 of the manufacturing device 20, information on the implantation target, input of the material and shape of the artificial tooth, and abutment information input (the abutment information input here is the first embodiment Information may be input in the order of example or abutment information according to the second embodiment), input of the size of the abutment, and input of the inner surface gap of the artificial tooth. The input information is stored in advance in the storage device 26, and information suitable for the implantation target, such as a plurality of candidate groups (size, material, shape), is input through the input device 24.

The input device 24 may be a device configured to convert a user command into a command executable on a computer, such as a keyboard, touch panel, mouse, etc., and is not particularly limited to the above example. The output device 25 is provided in the form of a monitor, display panel, etc. to monitor the process performed in the manufacturing device 20, and the storage device 26 may be provided in the form of a memory capable of storing predetermined data. have.

Thereafter, the scan body is coupled to the oral cavity or oral model at the position where the implant structure is to be placed (FIG. 16 (a)), and the oral cavity or oral model is scanned by the scanner 10 (FIG. 16 (b)), A scanned image as shown in FIG. 16(c) is created.

The manufacturing apparatus 20 is configured to generate a milling image for milling an implant structure to be manufactured using the scanned image generated by the scanner 10 and to mill an artificial tooth according to the generated milling image.

The matching device 21 is configured to match the scan body image included in the generated scan image. In the scan image scanned by the scanner 10, some shapes of the scan body may or may not be clear depending on the scan direction/light of the scan location. If a milling image of an artificial tooth is generated without a registration process, there is a possibility that an artificial tooth with low accuracy/precision may be generated. In order to solve the above problem, the registration process is first performed in the present invention.

To this end, the storage device 26 may store an image of the oral cavity or a scan body coupled to the oral model, and a matching point (a portion indicated by a red dot in FIG. 16(c)) is formed in a part of the scan body image. . The matching device 21 is a clear scan body image pre-stored in the storage device 26 at a location where the matching point of the scan body image included in the scanned image and the matching point of the scan body image pre-stored in the storage device 26 match. will match When the matching process by the matching device 21 is completed, a matching image is created (see FIG. 16(c)).

The design device 22 generates a milling image using the registered image. First, the occlusal plane of the registration image is aligned in consideration of the relationship between the implant structure to be placed and the opposing tooth (FIG. 17(e)), and abutment information previously stored in the storage device 26 (first embodiment or second embodiment) A library image, which is abutment information according to an embodiment) is loaded, and the loaded library image is combined with a matched image (see FIG. 17(f)).

Then, the design device 22 generates an artificial tooth image to be combined with the loaded library image. If the library image called by the design device 22 is the abutment image according to the first embodiment, an artificial tooth image with a relatively narrow inner space will be generated (since the abutment and the artificial tooth are directly coupled), the design device 22 If the library image loaded by ) is the abutment image according to the second embodiment, an artificial tooth image with a relatively wide inner space will be created (because the link is coupled to the inner space).

When the design of the inner space image of the artificial tooth is completed by the design device 22, various types of external images can be designed according to the position where the implant structure is to be placed (FIG. 17(g)), and then the design of the supra-gingival area This is completed (FIG. 17 (h)), and after the final position and conformity confirmation process, a milling image of the artificial tooth is created (see FIG. 18).

The milling image generated by the design device 22 is transmitted to the milling device 23, and the milling device 23 mills the material of the material input through the input device 24 according to the milling image to produce artificial teeth. will create

The artificial tooth produced by the milling device 23 corresponds to the artificial tooth 300 in the above-described first or second embodiment, and the artificial tooth 300 is coupled to the abutment 200, and the screw ( 230) passes through the artificial tooth 300 and the abutment 200 and is coupled to the fixture 100, thereby completing the implant structure placement process.

The implant structure manufacturing method of the present invention described above may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the medium may be those specially designed and configured for the present invention or those known and usable to those skilled in computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. - includes hardware devices specially configured to store and execute program instructions, such as magneto-optical media, and ROM, RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

In the above, the present specification has been described with reference to the embodiments shown in the drawings so that those skilled in the art can easily understand and reproduce the present application, but this is only exemplary, and various modifications and equivalent other It will be appreciated that embodiments are possible. Therefore, the protection scope of the present application should be determined by the claims.

10: Scanner
20: manufacturing device
21: matching device
22: design device
23: milling device
24: input device
25: output device
26: storage device
100: fixture
101: thread
200: abutment
210: body
211: upper abutment
211a: through hole
212: lower abutment
213: joint
214: first screw through hole
220: member providing holding force
221: elastic body
221a: disconnected part
222: support
230: link
234: third screw through hole
240: screw
241: stepped part
242: extension
243: thread
300: artificial tooth
311: screw input hole
312: abutment coupling groove
313: support coupling groove
314: second screw through hole

Claims (14)

an abutment 200 coupled to the fixture 100 inserted into the alveolar bone and having one or more through holes 211a extending in the transverse direction;
an elastic body 221 inserted into and installed inside the abutment 200 and capable of contracting and expanding radially inward and outward;
It is located inside the through hole 211a and outside the elastic body 221, and is inserted into the abutment 200 according to the contraction of the elastic body 221 or the abutment 200 according to the expansion of the elastic body 221 one or more supports 222 protruding outward; and
An artificial tooth (crown 300) coupled to the abutment 200 to cover the upper portion of the abutment 200 and having a support coupling groove 313 formed on an inner surface thereof to which the support 223 is coupled. ,
Dental implant structure.
According to claim 1,
The abutment 200 includes an upper abutment 211 configured to decrease in diameter toward the upper side and a lower abutment 212 configured to increase in diameter toward the upper side while being connected to the lower portion of the upper abutment 211,
The through hole 211a passes through the upper abutment 211 in the transverse direction,
Dental implant structures.
According to claim 2,
The upper abutment 211 has an angle of 20 to 24 degrees with respect to the longitudinal direction and is configured to decrease in diameter toward the top,
Dental implant structures.
According to claim 2,
The upper abutment 211 has a height of 1.8 mm to 2.2 mm,
Dental implant structures.
According to claim 1,
The dental implant structure further includes a screw 240,
The abutment 200 is formed with a first screw through hole 214 extending in the longitudinal direction,
A second screw through hole 314 extending in the longitudinal direction and aligned with the first screw through hole 214 is formed in the artificial tooth 300,
The screw 240 is coupled to the fixture 100 through the first screw through hole 214 and the second screw through hole 314,
Dental implant structures.
According to claim 1,
Further comprising a link 230 coupled to the top of the abutment 200 and conformal to the top of the abutment 200,
Dental implant structures.
According to claim 6,
The dental implant structure further includes a screw 240,
The abutment 200 is formed with a first screw through hole 214 extending in the longitudinal direction,
A second screw through hole 314 extending in the longitudinal direction and aligned with the first screw through hole 214 is formed in the artificial tooth 300,
A third screw through hole 234 aligned with the first screw through hole 214 and the second screw through hole 314 is formed in the link 230,
The screw 240 passes through the first to third screw through holes and is coupled to the fixture 100.
Dental implant structure.
According to claim 1,
The support coupling groove 313 is a continuous shape extending along the circumferential direction from one point on the inner surface of the artificial tooth 300,
Dental implant structures.
As a method for manufacturing a dental implant structure,
scanning, by the scanner 10, an oral cavity or an oral model of a target to be placed;
A step of matching a predetermined library image to a scan image formed by scanning the scanner 10 by the matching device 21, wherein the library image protrudes from the outer surface of the abutment coupled to the fixture and the abutment in a circumferential direction. Including a support body extending along, step;
generating, by the design device 22, an artificial tooth image to be combined with the library image; and
Milling, by the milling device 23, the artificial tooth according to the artificial tooth image generated by the design device 22;
A method for manufacturing a dental implant structure.
According to claim 9,
The artificial tooth image includes a support coupling groove continuously extending along the circumferential direction on an inner surface and a second screw through hole aligned with the first screw through hole of the abutment,
A method for manufacturing a dental implant structure.
According to claim 10,
The library image further comprises a link coupled to an upper portion of the abutment and having a third screw through hole aligned with the first screw through hole and the second screw through hole.
A method for manufacturing a dental implant structure.
Manufactured using the manufacturing method according to any one of claims 10 to 12,
Dental implant structure.
A dental implant manufacturing system performing the manufacturing method according to any one of claims 10 to 12,
a scanner 10 for scanning an oral cavity or an oral model of a target to be implanted;
a matching device 21 for matching a predetermined library image to a scan image formed by scanning the scanner 10;
a design device 22 for generating an artificial tooth image to be combined with the library image included in the image matched by the matching device; and
a milling device 23 for milling an artificial tooth according to the artificial tooth image generated by the design device 22; including,
Dental implant manufacturing system.
Stored in a computer-readable recording medium to execute the method of manufacturing a dental implant structure according to any one of claims 10 to 12,
computer program.

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