KR20160087707A - dental abutment and method of operating dental implant using the same - Google Patents

Abstract

The present invention relates an implant abutment for extracting three-dimensional scanning data and a method for operating an implant using the same. The implant abutment coupled to a fixture implanted in an alveolar bone to support a prosthesis includes: an engaging pole which is formed at a lower end to correspond to a fastening hole of the fixture; a fitting part which is formed on the upper side of the fastening pole to correspond to a fastening hole of the prosthesis; a skirt which supports a lower portion of the prosthesis and protrudes from boundaries of the fastening pole and the fitting part; an anti-rotation part which is formed in the fitting part and prevents a rotation in a state in which the prosthesis is inserted thereinto; and a reference surface which serves as a reference for recognizing the location of the abutment when scanning data is extracted in a state in which the abutment is fastened to the fixture. In a state in which the abutment is fastened to the fixture, the prosthesis is manufactured using a library of a CAD/CAM equipment through inter-oral scanning, so that, even when a bicon-type implant is operated, an accurate and elaborate prosthesis can be manufactured using the CAD/CAM equipment.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an implant abutment for extracting a three-dimensional scan data, and a dental abutment method using the same.

The present invention relates to an implant abutment for extracting three-dimensional scan data, and a method of implanting the same using the same. More particularly, the present invention relates to an implant abutment for extracting three- The prosthesis can be manufactured using the equipment, and the prosthesis can be manufactured precisely and precisely with the CADCAM equipment alone, so that the conformity of the abutment and the prosthesis can be improved without the need of manual operation.

Generally, the implant is made of titanium and consists of a fixture to be placed in the jawbone, an abutment to be inserted and fixed in the fixture, and a prosthesis to be adhered to cover the upper part of the abutment.

The fixture is placed in the jawbone to act as a root, and the prosthesis is made in a shape similar to a tooth to form the external shape of the artificial tooth. The abutment fixes the prosthesis to the fixture and transfers the load acting on the prosthesis to the fixture and jawbone It plays a role.

Conventionally, the method of manufacturing the prosthesis is manually performed by referring to the impression obtained by impressing the dentist.

However, since the accuracy of the prosthesis is lowered by hand, the method of manufacturing the prosthesis using a CAD cam device is mainly used.

The CADCAM system in the dentistry manages all the processes from design to product manufacturing by computer. When the prosthetics are reproduced by hand, the reproducibility of the prosthesis is very low, while the reproducibility of the prosthesis using the CADCAM system is almost perfect So that the prosthesis manufacturing using the CAD cam system is increasingly being made for accurate operation.

In order to fabricate the prosthesis using CAD cam equipment, 3D scan data of the position where the prosthesis is to be inserted is very important. In order to precisely measure the three-dimensional data of the position, a polyether ether ketone (PEEK) A scan body is used so that scanning information can be obtained by coating.

The scan body is an implant assistant part for preparing a highly conformable prosthesis by predicting the three-dimensional data such as the depth and direction in which the abutment is fastened when the abutment is fastened to the fixture, After scanning the three-dimensional data in the oral cavity, the shape of the prosthesis at the position and the fastening portion inside the prosthesis fastened to the abutment are precisely and precisely aligned using the library in which the information of the scan body and the abutment is inputted, Equipment.

However, depending on the manufacturer, the fixture and abutment fastening methods are very diverse. Therefore, the accuracy of the implant operation using the scan body varies greatly depending on the type of the implant.

That is, the implant part is divided into a hexa type (or octagon type) and a bicon type (or non-hexa type) depending on how the fixture and abutment are joined.

A hexa type is a structure in which a fixture and an abutment are fastened to each other by a polygonal structure and fastened by a screw. Since a directionality is set when an abutment is combined with a fixture, a scan body It is possible to precisely and precisely manufacture the prosthesis since the prosthesis can be manufactured after accurately extracting the orientation and fastening position of the abutment with the data.

On the other hand, the biconical type is a structure in which the fixture and the abutment are engaged with each other in a wedge shape. When the abutment is fastened to the fixture, The scan body can not be used because the depth to be fastened to the screw and the direction of fastening are not specified.

However, the bicon type completely prevents the gap between the abutment and the fixture to prevent bacterial infiltration, odor and swing, and loss of the gum bone. Therefore, the advantages of the biconet type implant can be enhanced and the procedure success rate is high Therefore, long-term treatment is recommended.

Therefore, in order to utilize a bicorn type implant treatment as needed, a biconic type abutment is fastened to a fixture and then a stone is impregnated and a prosthesis can be manufactured by referring to the result of the impression.

However, since commercially available abutments are very small in size and width, the accuracy of scanning data is very low because the minimum unit for merging is not configured. In particular, even if the reference plane is set, the size of the reference plane is very small. It is difficult to perform detailed machining by using a milling machine of the present invention, and thus the manufactured prosthesis is not fastened tightly to the abutment and is loose.

Therefore, after the prosthesis is manufactured using the CAD cam apparatus, the prosthesis is manually handled or the prosthesis is manually manufactured from the beginning, and thus the manufacturing process is very troublesome. In addition, the precision of the prosthesis is inevitably reflected by the manual operation of the prosthesis, which causes malocclusion and failure of the implant during the implant procedure.

On the other hand, even when a hexa-type implant is used, the procedure is performed by fastening the scan body for the bone during the procedure, separating the bone after the bone is worn, mounting the abutment in a state where the prosthesis is completed, There is also the problem of complexity.

KR 101214641 B1 KR 101274075 B1 KR 101359377 B1

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an accurate and precise restorative prosthesis by accurately extracting the three-dimensional scan data in the oral cavity, It is an object of the present invention to enable the implant procedure to be performed without a separate scan body except for the accessories and to simplify the procedure.

In order to achieve the above object, according to the present invention, there is provided an implant abutment which is coupled to a fixture placed on an alveolar bone to support a prosthesis, the implant comprising: a fastening column formed at a lower end thereof corresponding to a fastening hole of a fixture; A skirt portion formed on the upper side of the fitting portion and corresponding to the fastening hole of the prosthesis, a skirt portion protruding from a boundary between the fastening post and the fitting portion to support the lower portion of the prosthesis, And a reference surface serving as a reference for recognizing the position of the abutment during the extraction of the scanning data in a state where the abutment is engaged with the fixture so that the abutment is fixed to the fixture The intraocular scan was used to make a prosthesis using a library of CADCAM devices .

According to the implant abutment for extracting the three-dimensional scan data of the present invention and the implant treatment method using the same, even when the biconical type implant is used, the shape and size of the prosthesis can be adjusted It is possible to remarkably increase the reproducibility of the prosthesis because it can be precisely machined. Accordingly, it is possible to solve the problem that accompanies the biconet type implant treatment, that is, the reproducibility of the prosthesis is low.

In addition, it is possible to reduce the number of occlusal adjustments by repeatedly performing dental and laboratory operations by malocclusion, accurate procedures are performed, and patient satisfaction can be improved by shortening the period of implant treatment.

In addition, since the intra-oral scan is performed while the abutment is fixed to the fixture without using a separate scan body, the procedure can be simplified, and the cost can be saved because no separate parts such as the scan body are required .

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing an implant construction of an abutment of the present invention
2 and 3 are perspective views of the abutment of the present invention.
FIGS. 4 and 5 are block diagrams showing a method of implanting an implant according to the present invention.

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

As shown in FIG. 1, the present invention is an abutment A to be attached to a fixture F to be placed on an alveolar bone, and includes a fastening post 10, a fitting part 20 provided on an upper portion of the fastening post 10, A skirt portion 30 protruding laterally from a boundary between the clamping column 10 and the fitting portion 20 and a skirt portion 30 which is formed at a boundary between the clamping column 10 and the fitting portion 20, (40) and a reference surface (50).

The fastening post 10 is inserted into the fastening hole of the fixture F and serves as a support for the abutment A so that the fastening hole of the fixture F and the fastening post 10 are fastened in a wedge- So that it can be assembled by forcible fitting by a blow using a tool or the like.

The fastening post 10 of the fixture F and the fastening post 10 of the abutment A are assembled into a column shape having a wide upper portion and a narrow lower portion and a lower light-tight narrow column, As shown in FIG.

An upper portion of the fastening column 10 is provided with a fitting portion 20 to serve as a abutment for supporting a prosthesis inserted into the fastening hole of the prosthesis P and the fitting portion 20 is gradually narrowed from the lower portion to the upper portion And the prosthesis (P) is inserted.

The insertion portion 20 is formed with a rotation preventing portion 40 for preventing the rotation of the prosthesis in a state where the prosthesis P is fastened to the abutment A and the position of the abutment A reference plane 50 is formed.

The rotation preventing portion 40 is formed to have a structure in which grooves and protrusions are vertically and vertically engaged with each other when the fastening holes of the fitting portion 20 and the prosthesis P are fitted and fitted to prevent rotation, 20 and the prosthesis P can be prevented from rotating by forming a D-cut with a structure in which the fastening holes of the prosthesis P are eccentric from the cylindrical shape.

In addition, the reference surface 50 is a surface serving as a reference for recognizing the position of the abutment upon extracting the scanning data in the state where the abutment is fastened to the fixture, and the rotation preventing portion 40 and the reference surface 50 are integrally formed .

The reference plane 50 is a plane in which the position value of the abutment A with respect to the fixture F in the oral cavity, that is, the position of the abutment A in the state in which the fixture F is placed in the alveolar bone and the abutment A is fastened to the fixture, Is used as a reference of the scanning data for calculating the depth, direction, and center coordinates of the fastener A fastened.

Therefore, when the abutment A is placed in the fastening hole of the fixture F, and then the abutment A is fastened with a wedge method using a separate surgical tool or the like, the abutment does not flow, The position value of the abutment is calculated and the prosthesis can be designed and manufactured by utilizing the library information inputted from the CAD cam machine. In spite of using the bicone type implant structure, the scan body is used It is possible to precisely and precisely construct the prosthesis by accurately extracting the 3D scan data in the oral cavity.

In this case, the reference surface 50 is formed in a substantially triangular shape having a large area on the lower side and a small area on the upper side. In the state where the shape of the fitting portion 20 is a cylindrical shape gradually narrowed from the lower portion to the upper portion In order to maximize the area of the reference surface for extracting the scan data and to satisfy the minimum value of the merging utilizing the camcorder equipment, it is preferable to form the reference plane as a plane cut vertically downward from the uppermost circumference of the fitting portion 20.

When the auxiliary rotation preventing portion 60 is formed on the other side of the reference surface 50 with respect to the center axis of the abutment, the abutment A is rotated by the rotation preventing portion 40 and the auxiliary rotation preventing portion 60 , It is possible to further prevent the flow of the prosthesis by fixing the abutment A and the prosthesis in the engaged state on both sides.

The rotation preventing portion 40 and the auxiliary rotation preventing portion 60 are formed so that the size of the auxiliary rotation preventing portion 60 is smaller than the size of the rotation preventing portion 40 in which the reference surface 50 is formed, The restricting portion 40 and the auxiliary restricting portion 60 are engaged with each other so that the prosthesis P is fastened.

A cutting line 70 may be formed horizontally in the fitting portion 20 along the outer periphery of the fitting portion 20.

The cutting line 70 is for adjusting the height at which the abutment protrudes upward, and can form one cutting line 70, or two or more cutting lines 70 can be formed.

The practitioner can cut the upper portion using the cutting line 70 according to the patient's oral condition or the intention of the operator, and can use it shortly, and can use it as an abutment of various heights with one abutment (A) .

In addition, when the height value of the cutting line 70 is informed to the library of the CAD / CAM equipment, the abutment A is cut in the cut line along the cutting line when the abutment A is fastened to the fixture, It is possible to manufacture the prosthesis so as to have a fastening hole having a size suitable for the size of the cut abutment A. [

Therefore, it is possible to manufacture the prosthesis precisely and precisely, despite the fact that the abutment (A) is cut and the height can be changed variously, even though the biconical type implant is used.

Hereinafter, although the implant is used with the abutment (A), it is possible to accurately extract the three-dimensional scan data from the oral cavity even though it is a biconet type implant structure, fabricate the prosthesis based on the extracted data, The process will be described in detail.

FIG. 4 is a view illustrating a method of performing an implant according to the present invention. The method includes a step S110 of placing a fixture in which a biconical type fastening hole is formed in an alveolar bone of a patient, a step of applying a library of CAD cam devices to a fixture placed in the alveolar bone, (S120) of fastening an abutment having a reference surface that meets the minimum merge value to allow the abutment to be inserted into the fixture, and after the positioning of the abutment to the fixture is completed, (S130) of extracting data based on the reference plane of the fixture and the abutment, and a step (S130) of extracting data based on the position of the fixture and abutment, the depth of the fixture and the center coordinates of the direction, A step S140 of processing the prosthesis using the library information of the abutment, and a step of replacing the prosthesis manufactured in the step And a step (S150) of fastening in the oral cavity.

A step S110 of placing a fixture having a biconical type fastening hole in a patient's alveolar bone in the oral cavity is a step for setting a position for performing an artificial tooth in the oral cavity. And the depth at which the abutment is inserted based on the fixture F is set, thereby determining the fastening position of the prosthesis.

The step S120 of fastening the abutment having the reference surface satisfying the minimum value of the merge so that the fixture placed on the alveolar bone can utilize the library of the CAD cam apparatus can be performed by using the position information of the abutment A with respect to the fixture F The prosthesis is designed on the basis of the reference plane of the abutment A in the oral cavity when the prosthesis P is designed, and in order to extract accurate scan data, Ensure that the area of the reference plane is maximized to meet the minimum value of merging.

The step S130 of extracting data based on the reference plane of the abutment through the oral three-dimensional scanning using the oral insert scanner after completing the positioning of the abutment with respect to the fixture is performed using the abutment for the fixture F Dimensional scanning data when the position of the abutment A is set. In the case of scanning in the oral cavity, an oral insert scanner is used. However, in the state where the abutment A is fastened In case of scanning with the abutment impression, it is necessary to fasten the same abutment (A) to the tooth bone and then to attach the scanner which is integrally provided with the separate scanner equipment or CAD cam equipment So that a scan in the oral state can be performed.

That is, as shown in FIG. 5, after the position setting of the abutment to the fixture is completed, an impression is generated 230 with an abutment impression 230, The 3D scan data in the oral cavity can be extracted through the step S240 of extracting data based on the reference surface of the abutment through the scanning.

In this 3D scan data, it is possible to obtain accurate data on the height, width, dentition, occlusion state of the surrounding teeth, and relationship between the jawbone of the patient and the surrounding teeth at the position to perform the implant.

The step of providing the 3D scan data extracted in the step to the CAD cam equipment and processing the prosthesis using the library information of the abutment based on the position of the fixture and the abutment, (S140) recognizes the surface data of the reference surface of the abutment A to determine the length of the abutment, and then confirms the positional relationship such as the directionality and inclination angle of the abutment A Based on this, we will make prosthesis using CAD cam equipment.

In the CAD / CAM apparatus, the library information about abutment (A) is stored, and the outer shape of the prosthesis is designed based on the position value of the reference (A) of abutment (A), and then the prosthesis is manufactured using the milling device.

The step S150 of fastening the prosthesis manufactured in the step in the patient's mouth is a final step of implanting the prosthesis, that is, the artificial tooth, which is the final finishing of the implant, by fixing the prosthesis in the abutment, The contact with the adjacent teeth and the upper and lower occlusal measurements are measured to complete the implant procedure.

Therefore, it is possible to fabricate precise and precise prosthesis using CADCAM equipment even though implants are implanted using a biconical implant structure that is assembled with a wedge structure. So that it can be simplified.

10: Fastening column
20:
30: Skirt portion
40:
50: Reference plane
60: auxiliary rotation prevention part
70: Cutting line

Claims (5)

An abutment for implant supported by a fixture placed on an alveolar bone to support a prosthesis,
A fastening post 10 formed at the lower end to correspond to the fastening hole of the fixture;
A fitting portion 20 formed on the upper side of the fastening column and corresponding to the fastening hole of the prosthesis;
A skirt portion 30 that supports a lower portion of the prosthesis and protrudes from a boundary between the fastening post 10 and the fitting portion 20;
A rotation preventing portion 40 for preventing rotation when the prosthesis is inserted in the fitting portion 20 and a rotation preventing portion 40 for detecting the position of the abutment during the extraction of the scanning data in a state where the abutment is fastened to the fixture. A reference surface 50 as a reference;
And an implant abutment for extracting the three-dimensional scan data. The connector according to claim 1, wherein the fitting portion (20)
An auxiliary rotation preventing portion 60 on the other side of the reference surface 50 with respect to the center axis of the abutment;
And an implant abutment for extracting the three-dimensional scan data. 3. The connector according to claim 1 or 2, wherein the fitting portion (20)
And has a cylindrical shape gradually narrowed from the bottom to the top,
Wherein the reference plane (50) is formed as a plane cut vertically downward from the uppermost circumference of the fitting part (20), thereby securing an area of a reference plane for extracting scan data. Good abortion. (S110) a fixture having a biconic type fastening hole formed in an alveolar bone of a patient;
A step (S120) of fastening an abutment having a reference surface that meets a minimum value to allow the use of a library of the camcam device in the fixture placed in the alveolar bone;
A step (S130) of extracting data based on a reference plane of the abutment through the oral three-dimensional scanning using an oral insert scanner after the positioning of the abutment with respect to the fixture is completed;
The step of providing the 3D scan data extracted in the step to the CAD cam equipment and processing the prosthesis using the library information of the abutment based on the position of the fixture and the abutment, (S140);
A step (S150) of fastening the prosthesis manufactured in the step in the oral cavity of the patient;
And an implantable surgical method. Placing (S210) a fixture having a bicone type fastening hole formed in the alveolar bone of the patient's mouth;
(S220) fastening an abutment having a reference surface that meets a minimum value to allow the use of the library of the CAD cam device in the fixture placed in the alveolar bone;
A step 230 of creating an impression with an abutment impression after positioning of the abutment on the fixture is completed;
Extracting impression information from the reference plane of the abutment through the three-dimensional scanning (S240);
The step of providing the 3D scan data extracted in the step to the CAD cam equipment and processing the prosthesis using the library information of the abutment based on the position of the fixture and the abutment, (S250);
(S260) tightening the prosthesis manufactured in the step in the oral cavity of the patient;
And an implantable surgical method.

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