KR20160055408A - dental scanbody and method of operating dental implant using the same - Google Patents

Abstract

The present invention relates to a scan body for manufacturing an upper dental prosthesis of an implant. The scan body according to the present invention includes a pillar, a head part which is installed on the top of the pillar part and extracts three-dimensional scan data in the mouth, and an insertion part which is installed on the bottom of the pillar part and is fixed to the fixture in a state that the insertion part is inserted into a fixture, wherein the insertion part is formed in a cylindrical shape such that an inserting direction of the scan body is not specified, and a stopper for setting an inserting depth of the scan body is formed on a boundary between the pillar part and the insertion part. Accordingly, a three-dimensional scan data extracting scan body for manufacturing an upper dental prosthesis of an implant is capable of improving reproducibility of the dental prosthesis by extracting accurate three-dimensional scan data in the mouth and enabling manufacture of the dental prosthesis using CAD and CAM equipment even when operating the implant using a non-hexa type implant structure in which a fixture and an abutment are assembled by a wedge process.

Description

TECHNICAL FIELD [0001] The present invention relates to a scan body for extracting a three-dimensional scan data for manufacturing an upper prosthesis of an implant, and a dental scanbody and a method for operating the same using the same.

The present invention relates to a scan body for the preparation of an upper prosthesis for an implant and a method of implanting the same, and more particularly, to a non-hexa type implant structure in which the insertion direction of the abutment is not specified among the implant types used in the implant operation In this case, it is possible to manufacture the prosthesis using the CAD cam system, thereby improving the reproducibility of the prosthesis and improving the accuracy of the implant procedure.

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.

On the other hand, the CADCAM system in the dentistry manages all the processes from the design to the manufacture of the product by computer. In the past, the prosthesis was manually reproduced. However, when reproduced by hand, the reproducibility of the prosthesis is very low, Since the reproducibility of the used prosthesis is so high as to be almost perfect, the fabrication of the prosthesis using the camcam system is gradually increasing for correct operation.

Implants are classified into hexa type or non-hexa type depending on the structure of the structure.

The hexa type is a structure in which the assembling part of the fixture and the abutment are formed so as to correspond to each other with polygons, and the fitting direction of the abutment is specified. In the non-hexa type, the assembly part of the fixture and abutment is simply a wedge- It is a structure to assemble the abutment to the fixture by forcing it, and it is a structure that is assembled without directionality.

Since the orientation of the abutment is specified in the hexa type, the structure of the scan body is also assembled such that the direction is specific as in the abutment, and the scan data is extracted to prepare the scan body and the abutment information, It is possible to design the prosthesis with the CAD cam system by utilizing the data of all the data for the preparation of the prosthesis using the body as a reference point. However, since the fixture and abutment are assembled in a polygonal structure, foreign substances or bacteria may be put on the joint Is high.

In addition, when a plurality of implants are adjacent to each other, the hexatype has a disadvantage in that it is troublesome to set up the connection relation of adjacent prostheses because the insertion direction of the abutment is specified.

On the other hand, the non-hexa type assembled with the wedge structure has the advantage that the fixture and the abutment are tightly fitted with each other and tightly adhered to each other, so that the foreign matter or bacteria are less likely to be stuck to the hexa type and can be used hygienically However, since the depth of the scan body and the insertion direction are not specified and the position setting is not precisely performed, it is impossible to use the library or an error occurs in the prosthesis manufactured even if the library is used.

That is, in order to produce an accurate type of prosthesis, the position value (three-dimensional scan data) of the scan body in the oral cavity, which is the basis of the design data, must be accurate. In case of implanting the non-hexa type implant, Since the directionality is not precisely located, accuracy is inevitable.

Therefore, Hexa or Nonhexa type implant structures are selected and used according to the characteristics of the patient to be treated or the preference of the practitioner who is the practitioner.

KR 101417980 B1

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a non-hexa type implant structure in which a fixture and an abutment are assembled by a wedge method, The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a prosthesis which can be manufactured without errors by using a CAD / CAM apparatus, thereby remarkably improving the reproducibility of prostheses of a non-hexa type implant structure.

According to an aspect of the present invention, there is provided a scan body coupled to a fixture fixed to an alveolar bone, comprising: a column portion; The head unit includes a head unit and an insertion unit provided at a lower end of the column unit and fixed to the fixture. The insertion unit includes a cylindrical shape And the stopper 40 for setting the insertion depth of the scan body may be formed at the boundary between the column 20 and the insertion portion 30 to achieve the object of the present invention.

According to the scan body for extracting three-dimensional scan data and the implant method using the scan body for manufacturing the upper prosthesis of the present invention, accurate 3D scan data in the oral cavity is extracted, even though it is performed using the non-hexa type implant structure, Since the positional relationship of the abutment can be inverted to precisely shape the shape and size of the prosthesis according to the interdental relation, it is possible to remarkably reduce the work of adjusting the occlusal while repeating the dental and laboratories, have.

In addition, even when only one implant is implanted or multiple implants are connected to each other, the procedure is very simple and accurate, so that the patient can accurately reproduce the intra-oral intercostal relationship.

In addition, by adding hexa type advantages to non-hexa type implant structures assembled with wedge structure, utilization of non-hexa type implant prosthesis can be improved and hygienic use of implants is possible.

1 is an exploded perspective view showing a fixture fastening structure of a scan body of the present invention;
2 is a perspective view showing a state where the scan body of the present invention is coupled to a fixture in the oral cavity.
FIG. 3 is a cross-sectional view showing a coupling structure of the scan body of FIG.
4 is a cross-sectional view of the scan body of the present invention
5 and 6 are bottom perspective views illustrating another embodiment of the scan body of the present invention.
FIG. 7 is a block diagram illustrating a method of performing an implant using the scan body of the present invention

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

1, the present invention is a scan body S coupled to a fixture F fixed to an alveolar bone, including a post 10, a head 20 provided at an upper end of the post, a fixture F And a stopper 40 for setting an insertion depth of the scan body S with respect to the fixture F. The stopper 40 is provided at a lower end of the column to fix the scan body S to the fixture F. [

The material of the scan body (S) is capable of extracting scan data, ensuring durability against impact and abrasion, and PEEK (polyether ether ketone) can be used to secure biocompatibility.

The column portion 10 serves as a support for the scan body S and may be formed in a cylindrical or polygonal columnar shape and a head portion for extracting three- (20).

The upper and lower lengths of the pillars 10 may be formed long or short depending on the use of the scan body S, such as implantation of the implant in either the maxilla or mandible, or implantation of the upper and lower implants. can do.

Here, the head portion 20 is a reference of the position value of the fixture F in the oral cavity, that is, the basis of the three-dimensional scan data for inversely calculating the depth and direction of the fixture F placed in the alveolar bone, and the value of the center coordinate.

The insertion portion 30 is configured to be inserted into a hollow groove of the fixture F and has a cylindrical shape so that the insertion direction of the scan body S is not specified.

Therefore, it is not necessary to confirm the insertion direction of the scan body S, and the scan body can be positioned on the fixture and then fixed with a wedge method using a separate surgical tool or the like.

At this time, a stopper 40 is formed at a boundary between the column 10 and the insertion part 30 so that the depth at which the scan body S is inserted can be set. The structure of the stopper 40 is the same as that of the column 10 The stopper 40 is seated on the upper surface of the fixture F when the insertion portion 30 is fixed to the fixture by fixing the diameter of the insertion portion 30 relatively smaller than the diameter, Can be determined.

The upper and lower lengths of the insertion portion 30 are set in the fixture F so that the inserted portion 30 is completely inserted into the assembly portion formed in the fixture F and the inserted depth is set by the stopper insertion portion 40. [ Should be formed to be relatively shorter than the depth of the formed assembly part.

In order to calculate the inserted direction value of the scan body S when the position value of the scan body S is scanned and data is formed, the head unit 20 forms a part of the outer peripheral surface of the head unit 20 in a D cut The direction measuring unit 22 can be formed to be eccentric.

Therefore, the position value of the head 20 with respect to the fixture F can be accurately calculated, and the position of the fixture and abutment, the depth of the inserted center and the direction center coordinates are inversely calculated based on the calculated data value The prosthesis can be designed and manufactured using the inputted library information.

In the present invention, the scan body S is mounted in the oral cavity to extract the three-dimensional scan data. However, the same object can be achieved by using a teeth-shaped object in a state in which a fixture is placed on the jaw bone.

Meanwhile, the structure of the insertion portion 30 is such that the inclined surface 32 is formed so that the upper end surface is wide and the lower end surface is narrowed, and the end surface is formed in a trapezoidal shape in which the end surface is narrowed to the lower side, So that it can be assembled in a wedge manner.

5 and 6, when one or more incisions 36 are formed along the perimeter of the hollow portion 34, as shown in FIGS. 5 and 6, the hollow portion 34 is formed in the insertion portion 30, (30) is fitted to the fixture by force fitting while being tensioned when it is fitted in the fixture.

At this time, the incision part 36 may be formed by forming the incision part in the form of a straight line or a cross in the state that the insertion part 30 is cylindrical, or forming the incision part in the form of a hollow tube, So that tension operation can be performed.

At this time, an entry guide surface 38 may be formed at the lower end of the insertion portion 30 to guide entry into the fixture.

Therefore, when the scan body S is inserted into the fixture F, the scan body S is guided by the entrance surface 38 of the insertion portion 30 to be inserted into the center axis, Since the inner part of the PEEK material is self-elastic, the part is assembled into the fixture by force-fitting while the tension part is working. Therefore, even though the non-hexahedral implant structure is used, the 3D scan data in the oral cavity using the scan body can be accurately extracted, To make a prosthesis.

Hereinafter, a process of extracting three-dimensional scan data for manufacturing an upper prosthesis of an implant using the scan body S, fabricating a prosthesis based on the extracted data, and performing an implant will be described in detail.

FIG. 7 illustrates a method of implanting the present invention. Referring to FIG. 7, a method of performing an implant using the scan body S includes placing a non-hexa-type fixture on a alveolar bone of a patient (S100) A step S200 for setting the position of the scan body with respect to the fixture such that the scan body is mounted on the upper surface of the fixture by using a stopper formed at the end of the insert portion by inserting the scan body having the non-hexa type insert portion, (S300) of extracting three-dimensional scan data through an intraoral scan using a scanner, and providing the 3D scan data in the oral cavity to the CAD cam apparatus, and correcting the positions of the fixtures and abutments, (S400) of making a prosthesis using the calculated and inputted library information, a step of putting an abutment in a patient's mouth and setting a prosthesis May be configured to include step S500.

The step (S100) of placing the non-hexa-type fixture on the alveolar bone of the patient is a step for setting a position for performing the artificial tooth in the oral cavity by setting the depth at which the fixture F is inserted, ), The depth of insertion of the abutment is set, thereby determining the fastening position of the prosthesis.

 Setting a position of the scan body with respect to the fixture by inserting a scan body having a non-hexa type insertion portion into the fixture placed in the alveolar bone and using the stopper formed at the distal end of the insertion portion to fix the scan body on the upper surface of the fixture Assumes that the scan body S is completely fitted to the fixture F as a preparation process for extracting the position information of the scan body S with respect to the fixture F, It is very important that the scan body S is inserted at the correct height in the fixture in order to extract accurate scan data.

The step of extracting the three-dimensional scan data through the intraoral scanning using the oral insert scanner (S300) includes a step of extracting the set position of the scan body S with respect to the fixture as the three-dimensional scan data In the case of scanning in the oral cavity, an oral insert scanner is used. However, when scanning the oral cavity using a toothbrush, the scan body (S) may be fastened to the tooth bone, and then a separate scanner device or CAD cam device It is possible to perform the oral scan by using a scanner provided integrally.

The three-dimensional scan data can be obtained from the above steps. The three-dimensional scan data includes the height, width, dentition, occlusion state of the surrounding teeth, and the relationship between the jawbone of the patient and the surrounding teeth Accurate data can be obtained.

 The step (S400) of providing the in-vivo three-dimensional scan data to the CAD cam apparatus to inversely calculate the positions of the fixtures and abutments, the depths of the inserted depths and the center coordinates of the directions, and the prosthesis using the inputted library information, The length of the abutment is obtained by recognizing the surface data of the head portion 20 through the scan while the body S is inserted in the fixture F. Thereafter, the orientation of the fixing hole of the fixture F and the tilt angle The positional relationship can be confirmed. Based on this, the prosthesis can be manufactured using the CAD cam apparatus.

Library information, which is data for manufacturing a prosthesis including a fixture F and abutment, is stored in the CAD / CAM apparatus, so that the outer shape of the prosthesis is designed based on the position value of the head 20 of the scan body S, And the restoration of the prosthesis is completed.

The step S500 of placing the abutment in the oral cavity of the patient and setting the prosthesis is a final step of implanting the prosthesis made in the above step, that is, the artificial tooth, which is the final finishing of the implant, And the contact with the adjacent teeth and the upper and lower occlusion are measured to complete the implant procedure.

Meanwhile, in step S400, the 3D scan data of the oral cavity is provided to the CAD cam apparatus to inversely calculate the positions of the fixtures and abutments, the depths of the inserted centers and the center coordinates of the directions, and the prosthesis using the inputted library information (S400) A step of placing the abutment in the oral cavity of the patient and setting the prosthesis, if the two prostheses are manufactured as a provisional prosthesis for setting the position of the final prosthesis and the abutment used in the oral cavity of the patient, (S500), the temporary prosthesis may be pre-set in the patient's oral cavity, the temporary prosthesis may be removed, and the final setting operation may be performed using the final prosthesis.

That is, when fabricating a prosthesis using a CAD cam apparatus, the final prosthesis is processed using raw artificial teeth such as zirconia as a raw material, and the provisional prosthesis is processed into a plastic raw material such as PMMA to set the abutment in the oral cavity. It is possible to adjust the position of the abutment and fix the orientation of the abutment to the fixture by adjusting the position of the abutment while checking the contact with the adjacent tooth.

Thereafter, the temporary prosthesis inserted in the abutment is removed, and the final prosthesis is inserted again in the place, and the final setting is performed so that the final prosthesis has the correct directionality.

Therefore, it is possible to fabricate precise and precise prosthesis using CADCAM equipment even though non-hexa type implant structure is assembled with a wedge structure, and it is possible to perform the prosthesis manufactured at the precise position.

10:
20: head part 22: direction measuring part
30: insertion portion 32: inclined surface
34: hollow part 36: incision part
38: Entry-inducing surface
40: Stopper

Claims (7)

A scan body coupled to a fixture fixed to the alveolar bone,
A pillar portion (10);
A head unit (20) provided at an upper end of the column and for extracting three-dimensional scan data in the oral cavity;
An insertion portion 30 provided at a lower end of the column portion and fixed to the fixture;
And,
The insertion portion 30 has a cylindrical shape so that the insertion direction of the scan body is not specified. A stopper 40 is provided at a boundary between the column portion 20 and the insertion portion 30 to set the insertion depth of the scan body. Is formed.
Scan body for extracting 3D scan data for the preparation of the upper prosthesis of the implant. The scan body of claim 1, wherein the insertion portion (30) is formed with an inclined surface (32) such that an upper end surface is wide and a lower end surface is narrowed. The implant prosthesis of claim 1, wherein the insertion portion (30) has at least one incision portion (36) formed along the periphery thereof so that the insertion portion (30) is assembled with the fixture Scan body for extracting scan data. 4. The method according to claim 3, wherein the insertion portion (30) is formed of a hollow body (34) and formed into a tubular body to guide the operation of the inner and outer sides of the implant. . The head device according to claim 1, wherein the head portion (20)
And a direction measurement surface (21) for setting the insertion direction of the scan body is formed on the upper surface of the scan body. A step (S100) of placing a non-hexa-type fixture on the alveolar bone of the patient;
Setting a position of the scan body with respect to the fixture by inserting a scan body having a non-hexa type insertion portion into the fixture placed in the alveolar bone and using the stopper formed at the distal end of the insertion portion to fix the scan body on the upper surface of the fixture );
Extracting three-dimensional scan data through intraoral scanning using an oral insert scanner (S300);
(S400) of providing the 3D scan data in the oral cavity to the CAD cam apparatus to inversely calculate the positions of the fixture and the abutment, the depth of the inserted depth, and the direction center coordinates, and using the inputted library information (S400);
(S500) of placing the abutment in the patient's mouth and setting the prosthesis;
A method of implanting an implant using a scan body for extracting three-dimensional scan data for manufacturing an upper prosthesis of an implant. The method according to claim 6,
The step of providing the in-vivo three-dimensional scan data to the CAD cam equipment to inversely calculate the positions of the fixture and the abutment, the inserted depth and the direction center coordinate, and fabricating the prosthesis using the inputted library information (S400)
Further comprising the step of fabricating the two prostheses with a temporary prosthesis for setting the position of the final prosthesis and abutment to be used in the oral cavity of the patient and used as a temporary tooth,
(S500) of placing the abutment in the oral cavity of the patient and setting the prosthesis,
Setting the abutment using the temporary prosthesis in the oral cavity of the patient, removing the temporary prosthesis, and final setting the final prosthesis using the final prosthesis, so that the implant operation is performed
Implant procedure using scan body for extracting 3 - D scan data for the preparation of upper prosthesis for implants.

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