KR102599233B1 - Method of manufactuing for implant library - Google Patents

Abstract

By producing and improving a library for precision processing of crowns, the present invention not only actively increases the physical and chemical bonding strength between crowns and abutments made of different materials, but also provides a library for crown processing based on the corresponding CAD-dedicated library. Tools are provided to improve the quality and surgical value of the implant, and the implant crown CAD library and exclusive library maximize convenience of use and efficiency due to the ease of handling, use, maintenance, and repair resulting from the differentiated structure from the existing structure. Regarding tools for crown processing, the library dedicated to crown CAD produces a large number of three-dimensional data (10) corresponding to the shape and dimensions of the abutment and the shape of the anti-rotation surface (13), and the three-dimensional data is produced using a CAD system. The feature is that it is provided in a form that can be manufactured, modified, and viewed through the crown processing tool, and the crown processing tool is characterized by a standard corresponding to the crown CAD-dedicated library described above.

Description

Implant crown CAD library and tools for crown processing {Method of manufacturing for implant library}

The present invention relates to a library dedicated to implant crown CAD for processing crowns and a library-based crown processing tool. More specifically, by producing and improving a library for precision processing of crowns, crowns and abutments made of different materials Not only is the physical and chemical bonding power with the implant actively increased, but also the quality and surgical value of the implant are improved by providing a tool for crown processing based on the corresponding CAD library. Handling and use resulting from a structure differentiated from existing ones. This relates to a library dedicated to implant crown CAD and crown processing tools that maximize convenience of use and efficiency due to ease of maintenance and repair.

Typically, an implant refers to a replacement that can replace original human tissue when it is lost, and in dentistry, it refers to an artificially manufactured tooth transplant. These dental implants consist of a fixture installed in the alveolar bone, a crown that replaces a natural tooth, and an abutment that secures the crown to the fixture.

In general, since crowns are exposed to the outside of the patient's mouth, they are mainly made of ceramic materials that have a texture and color similar to natural teeth, and zirconia is used among them. Conversely, since the abutment is an accessory built between the crown and the fixture, it is made of titanium material that is harmless to the body and has high strength.

For example, technologies related to the implant include Registered Patent Publication No. 10-1707905, “Abutment for Implant,” Registered Patent Publication No. 10-1109625, “Abutment for Implant,” and Registered Patent Publication No. 10-2463947. “Round bar for abutment processing and abutment processing method using the same”, Registered Patent Publication No. 10-1127880 “Fixture for implants”, Registered Patent Publication No. 10-2118038 “Dental implant fixture”, etc. It is done.

As mentioned above, the implant-related industry is putting a lot of effort into improving the functionality of fixtures, which determine the crown installation direction, and abutments, which determine the insertion depth of the crown. On the other hand, crowns are manufactured to fit the shape of the abutment and are being left behind in the development of implant technology.

The crown is installed by intervening perpendicularly to the abutment, and physical bonding is achieved due to interference fit due to tolerances, and chemical bonding is achieved by applying adhesive to the mutual contact surfaces of the crown and abutment to bond them. It comes true.

However, the chemical adhesion decreases due to the difference in materials between crowns that prefer zirconia materials and abutments that prefer titanium materials, and as only physical bonding is maintained over time, problems such as distortion or separation of the bonding area may occur. You can.

Therefore, technology that can solve these problems is needed.

Registered Patent Publication No. 10-1707905 “Abutment for Implant” Registered Patent Publication No. 10-1109625 “Abutment for Implant” Registered Patent Publication No. 10-2463947 “Round bar for abutment processing and abutment processing method using the same” Registered Patent Publication No. 10-1127880 “Fixture for implants” Registered Patent Publication No. 10-2118038 “Dental Implant Fixture”

The present invention was created to more actively solve the above-mentioned problems. When a crown made of zirconia and an abutment made of titanium are joined together, the chemical adhesion decreases due to differences in materials, causing the joint area to become loose or distorted. The main problem is to produce and provide a CAD library that allows precision processing of crowns to prevent problems.

In addition, the present invention aims to provide technology for more precise processing of crowns by producing and providing machining tools based on a library dedicated to crown CAD as a standard.

In order to achieve the above-mentioned problem, the structure of the implant crown CAD library and crown processing tool proposed in the present invention is as follows.

The crown CAD library of the present invention produces a large number of three-dimensional data (10) corresponding to the shape and dimensions of the abutment and the shape of the rotation prevention surface (13), and the three-dimensional data is produced and modified through a CAD system. It is characterized by being provided in a viewable form.

In addition, the rotation prevention surface 13 includes a coordinate guide (S) cut perpendicularly to the upper side of the abutment in a one-to-one correspondence.

In addition, the rotation prevention surface 13 is located at one place on the upper side of the abutment (2), one place on each side of the upper left and right sides of the abutment, or four places in all directions on the upper side of the abutment or the abutment. It includes a coordinate guide (S) in the form corresponding to one of six hexagonal positions on the upper side of the.

In addition, the three-dimensional data 10 includes a body 11 of a shape corresponding to a partial outline of the abutment; and a screw hole 12 penetrating vertically through the body; and cutting in a vertical direction from the side of the body. At least one anti-rotation surface (13); And, At least one or more retaining grooves (14) recessed along the outer surface of the body; And, A support surface (15) extending outward from the bottom of the body; And, A base from the support surface It includes a safety distance surface 16 extending upward at a set angle.

The machining tool of the present invention is characterized by a standard corresponding to the library dedicated to Crown CAD described above.

Meanwhile, the tool 3 consists of a shaft 3-1 that is connected to the device and rotates according to information set in the Crown CAD library, and a plurality of cutting blades 3-2 extending in all directions from the end of the shaft. do.

According to the present invention, which consists of the above-described configuration, by applying the library that was used only for fixtures or abutments to the crown, the crown can be processed more precisely, and as a result, the physical bonding force with the abutment is increased. Long lifespan can be expected, as it can be stably maintained and preserved for a long period of time after implant surgery.

In addition, the present invention actively expands the amount of resin adhesive applied by improving the structure of the retaining groove, thereby increasing the chemical bonding force between the crown and the abutment, so that it can be stably maintained and preserved for a long period of time after implant surgery. did.

In addition, the present invention can process crowns more precisely through a processing tool consisting of a library and set dedicated to crown CAD, thereby actively contributing to improving the quality of implant components and procedures.

Figure 1 is a cross-sectional view showing the structure of a typical abutment and crown.
Figure 2 is a cross-sectional view showing the combined structure of a crown processed based on the crown CAD library proposed by the present invention and a ready-made abutment.
Figure 3 shows three-dimensional data registered in the crown CAD library proposed by the present invention.
Figure 4 is an example of a coordinate guide that serves as a standard for producing a library dedicated to Crown CAD.
Figure 5 is a perspective view of the crown processing tool proposed by the present invention.

Hereinafter, the configuration of the present invention and its operations and effects will be described collectively with reference to the accompanying drawings.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete, and are provided by those skilled in the art in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. In addition, the same reference numerals refer to the same elements throughout the specification.

The present invention relates to a library dedicated to implant crown CAD for processing crowns and a library-based crown processing tool.

Above all, the present invention not only actively increases the physical and chemical bonding strength between crowns and abutments made of different materials by producing and improving a library for precision processing of crowns, but also further improves the Tools for crown processing are provided to improve the quality and surgical value of the implant, and the ease of handling, use, maintenance, and repair that comes from its differentiated structure from the existing one provides maximum convenience and efficiency for implant crown CAD. Please note that it is related to libraries and tools for machining crowns.

Figure 1 is a cross-sectional view showing the structure of a typical abutment and a crown, and Figure 2 is a cross-sectional view showing the combined structure of a ready-made abutment and a crown processed based on the library dedicated to crown CAD proposed by the present invention. 3 is three-dimensional data registered in the library dedicated to crown CAD proposed by the present invention, Figure 4 is an example of a coordinate guide that serves as a manufacturing standard for the library dedicated to crown CAD, and Figure 5 is a diagram of the crown processing tool proposed by the present invention. It is a perspective view.

As shown in Figures 1 and 2, the implant includes a fixture that is installed in the alveolar bone; a crown that replaces a natural tooth; and an abutment that secures the crown to the fixture; and fastening bolts that integrate the elements. In the case of fixtures, they are made of titanium material that does not cause rejection by the human body because they are placed directly in the alveolar bone. Abutments are made of titanium, the same as the fixture, because the crown must be firmly fixed to the fixture. Crowns are human-friendly and They are commonly made of zirconia material, which has a color similar to that of natural teeth.

These implants are connected to each other by forming a female thread in the fixture and a male thread in the abutment, and the abutment and crown are connected to each other by physical bonding by pressure fitting or by applying a bond to the abutment or crown. Shiki is fastened by chemical bonding through bonding.

On the other hand, the chemical bonding strength of the crown made of zirconia and the abutment made of titanium is bound to be reduced due to the difference in materials, and in addition, since the joining area between the crown and the abutment is provided in a very tight structure, it is difficult to apply a resin adhesive. The space for this is inevitably limited.

In the case of crowns and abutments joined by bonding in this way, peeling of the resin adhesive occurs due to differences in materials, and as time passes, chemical bonding strength gradually decreases, causing the joint area to become distorted or spaced apart. There was also a problem with the crown falling off from the abutment.

The present invention seeks to provide a technology that can precisely process a crown to solve all of the above-mentioned problems, as well as a technology that can improve and modify the structure of the crown more easily, simply, and conveniently than before.

These technical offerings are based on CAD-specific libraries.

The CAD-only library refers to 3-dimensional data stored in a CAD system so that implant accessories can be manufactured more easily and conveniently. The CAD system basically stores 3D data of standard-sized fixtures, abutments, and crowns, and when necessary, 3D data of fixtures, abutments, and crowns developed by each company through new production functions. can be produced.

The present invention was created through a new production of the CAD system and relates to a library dedicated to crown CAD. In detail, it provides three-dimensional data of a structure that can perfectly combine the crown with the abutment.

The library dedicated to crown CAD of the present invention consists of three-dimensional data (10) corresponding to the shape and dimensions of the abutment (2) and the form of the anti-rotation surface. In particular, the three-dimensional data can be produced and modified through a CAD system. It is characterized by being provided in a file format that can be viewed.

Generally, the fixture is fastened to the lower part of the abutment (2) and the crown (1) is fastened to the upper part, so the crown CAD library proposed by the present invention contains three-dimensional data corresponding one-to-one with the upper part of the abutment, The crown may consist of 3D data.

The three-dimensional data 10 can be easily obtained by digitally scanning the upper part of the abutment 2, and can also be obtained through modification functions and new production functions.

The three-dimensional data 10 proposed by the present invention includes a body 11 of a shape corresponding to a partial outline of the abutment 2; a screw hole 12 penetrating vertically through the body; and a side part of the body. At least one anti-rotation surface 13 cut in the vertical direction; and at least one retaining groove 14 recessed along the outer surface of the body; and a support surface 15 extending outward from the bottom of the body; and , a safety distance surface 16 extending upward from the support surface at a preset angle.

The body 11 has an overall cylindrical shape that corresponds one-to-one with the upper part of the abutment 2, and a circular groove that corresponds one-to-one with the body is machined at the bottom of the crown 1 through the body data.

The screw hole 12 is a hole that penetrates the center of the body 11 in the vertical direction, and a through hole is machined on the set position of the crown 1 through the corresponding screw hole data. The screw hole (12) is a hole to allow vertical intervention of the fastening bolt. The fastening bolt is used to mutually fasten the fixture and the abutment (2) or to fasten the fixture, the abutment, and the crown (1). refers to a bolt member for It is desirable that the screw hole 12 has a diameter through which a fastening bolt can be easily inserted, and in addition, the position and direction of the hole may be determined according to the oral condition of the patient being treated.

The anti-rotation surface 13 is a surface cut perpendicular to the side of the body 11, and a groove is machined at the bottom of the crown 1 by combining the anti-rotation surface data and body data. The rotation prevention surface 13 is a surface in contact with the coordinate guide (S) formed on the upper side of the abutment (2) and prevents unwanted rotation between the crown (1) and the abutment when combined. Alternatively, it may serve as a guide to suggest and guide the coordinate direction of the abutment when combined with a fixture.

As shown in Figure 4, the rotation prevention surface 13 may be formed at one location on the upper side of the abutment 2, or at two locations, one each on the left and right sides of the upper upper portion of the abutment. , Alternatively, four locations may be formed in all directions on the upper side of the abutment, or six locations may be formed in a hexagonal shape on the upper side of the abutment.

As described above, when processing the crown (1), processing can be performed by viewing three-dimensional data in accordance with the coordinate guide (S) applied to the target abutment (2). For example, if there is only one coordinate guide (S) applied to the abutment (2), processing is attempted by browsing the 3D data consisting of one anti-rotation surface (13) in the crown CAD library, and If there are 2 coordinate guides applied to the abutment, machining is attempted by viewing 3D data with 2 anti-rotation surfaces in the library dedicated to Crown CAD. If there are 4 coordinate guides applied to the abutment, rotation is performed in the library dedicated to Crown CAD. Processing is attempted by viewing 3D data with 4 anti-rotation surfaces. If the coordinate guide applied to the abutment is 6 points, machining is performed by viewing 3D data with 6 anti-rotation surfaces in the crown CAD library. Try .

The retaining groove 14 refers to a groove cut along the outer circumference of the body 11, and a plurality of the grooves may be formed at equal intervals in the vertical direction within the range permitted by the body. The retaining groove 14 may be formed by cutting to a preset width and depth, and may also be formed in a circular or polygonal shape.

The retaining groove 14 allows penetration of the resin adhesive into the cut space, thereby contributing to increasing the bonding force of the resin adhesive compared to the existing one.

For example, the general abutment 2 has a structure in which the upper part is in the shape of a cylinder, and the bottom of the crown is made of a circular groove that corresponds one-to-one with the cylinder of the abutment and is fastened by mutual interference fit. In order to increase the bonding strength, resin adhesive was applied to the surface of the cylinder of the abutment (2) or the inner diameter of the groove of the crown (1) and bonded. However, since the cylinder and the groove are so closely structured, the amount of resin adhesive applied may be insufficient. There was no choice but to do so, which caused the resin adhesive to peel off and reduce the chemical bonding strength, resulting in problems such as distortion, separation, and separation between the abutment and the crown.

However, in the present invention, the resin adhesive is charged into the retaining groove (14), thereby increasing the contact surface and adhesive amount of the resin adhesive between the crown (1) and the abutment (2), thereby strengthening the chemical bonding force, thereby completely solving all of the above problems. It became possible.

The support surface 15 refers to a flat surface extending outward from the lower end of the body 11, and the surface serves as data for processing the bottom of the crown 1.

The safety distance surface 16 refers to an inclined surface extending outward from the support surface 15, and this surface serves as data for processing the outer circumference of the lower end of the crown 1. The safety distance portion 16 is preferably formed with an inclined surface of 45°.

As described above, the library dedicated to crown CAD proposed by the present invention includes a body 11 for processing a circular groove at the bottom of the crown 1; a screw hole 12 for processing a hole vertically penetrating the crown; and a crown. A rotation prevention surface (13) that forms a cutting surface in the circular groove formed at the bottom of the crown; and a retaining groove (14) that processes a plurality of grooves along the inner diameter of the circular groove formed in the crown; and the bottom surface of the crown is processed to be flat. It is composed of a support surface (15), and a safety distance surface (16) that processes the circumference of the lower end of the crown into a curved surface.

Meanwhile, in the present invention, the crown 1 is processed using the crown processing tool 3 produced based on the crown CAD library produced through the above process.

The tool 3 consists of a shaft 3-1 that is connected to the device and rotates according to information set in the Crown CAD library, and a plurality of cutting blades 3-2 extending in all directions from the end of the shaft. The outer diameter of the cutting blade (3-2) does not exceed the diameter of the insertion hole (1-1).

According to the present invention, which consists of the above-described configuration, by applying the library that was used only for fixtures or abutments to the crown, the crown can be processed more precisely, and as a result, the physical bonding force with the abutment is increased. Long lifespan can be expected, as it can be stably maintained and preserved for a long period of time after implant surgery.

In addition, the present invention actively expands the amount of resin adhesive applied by improving the structure of the retaining groove, thereby increasing the chemical bonding force between the crown and the abutment, so that it can be stably maintained and preserved for a long period of time after implant surgery. did.

In addition, the present invention can process crowns more precisely through a processing tool consisting of a library and set dedicated to crown CAD, thereby actively contributing to improving the quality of implant components and procedures.

The present invention described above has been described with reference to an embodiment shown in the drawings, but this is merely illustrative, and various modifications and other equivalent embodiments can be made by those skilled in the art. should be clarified. Therefore, the true technical protection scope of the present invention should be interpreted in accordance with the attached claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1. Crown 2. Abutment
10. 3D data 11. Body
12. Screw hole 13. Anti-rotation surface
14. Retaining groove 15. Supporting surface
16. At a safe distance

Claims (5)

A large number of three-dimensional data (10) are produced in response to the shape and dimensions of the abutment (2) and the shape of the rotation prevention surface (13), and the three-dimensional data is a type of implant that can be produced, modified, and viewed through a CAD system. Includes what is provided as a library dedicated to Crown CAD,
The three-dimensional data 10 includes a body 11 having a shape corresponding to a partial outline of the abutment; a screw hole 12 passing vertically through the body; and at least a screw hole 12 cut in a vertical direction from the side of the body. One or more rotation prevention surfaces (13); And, At least one or more retaining grooves (14) recessed along the outer surface of the body; And, A support surface (15) extending outward from the bottom of the body; And, A preset angle from the support surface It includes a safety distance surface (16) extending upward,
It consists of a shaft (3-1) that is connected to the setting device and rotates according to the information set in the implant crown CAD library, and a number of cutting blades (3-2) extending in all directions from the end of the shaft, corresponding to the implant crown CAD library. Includes machining tools (3) provided as standard,
The rotation prevention surface 13 is formed in a one-to-one correspondence with the coordinate guide (S) cut perpendicularly on the upper side of the abutment (2), and is located at one location on the upper side of the abutment or the abutment. It is in the form of a coordinate guide (S) that corresponds to one of the following: 1 location on both left and right sides of the upper part, 4 locations in all directions on the upper side of the abutment, or 6 hexagonal locations on the upper side of the abutment, and is attached to the abutment. If there is only one coordinate guide applied to the abutment, try machining by viewing the 3D data consisting of one anti-rotation surface (13) in the crown CAD library. If there are two coordinate guides applied to the abutment, use the crown CAD dedicated library. Processing is attempted by viewing 3D data with 2 anti-rotation surfaces in the library. If there are 4 coordinate guides applied to the abutment, 3D data with 4 anti-rotation surfaces is retrieved from the Crown CAD library. A recording medium that records a program that attempts machining by viewing and attempts machining, and when the coordinate guide applied to the abutment is 6 places, the 3D data consisting of 6 anti-rotation surfaces in the Crown CAD dedicated library is viewed and attempted machining. delete delete delete delete

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