KR200374841Y1 - Dental implant system - Google Patents

Abstract

The present invention is an artificial dental system to be placed in the alveolar bone to act as an artificial tooth root so that prostheses such as artificial teeth can be mounted, implants are formed on the outer peripheral surface is implanted in the alveolar bone; And an abutment fastened to an upper end surface of the implant, wherein an outer circumferential portion of the upper end surface of the implant and an outer circumferential portion of the lower end surface of the implant are tapered to increase the diameter of the joint surface downward. do. According to the artificial dental system according to the present invention, it is possible to increase the fixing force when placing in the alveolar bone, increase the function of dispersing the occlusal force and at the same time maintain a strong support for the vertical pressure and the lateral force, and the bacteria present in the oral cavity are combined with the implant and abutment Penetrates the area and prevents inflammation around the gums.

Description

Dental artificial tooth system {DENTAL IMPLANT SYSTEM}

The present invention relates to an artificial dental system, and more particularly, to a dental implant for preventing the screw loosening phenomenon due to repeated occlusal force when implanted in the alveolar bone and to prevent the penetration of microorganisms.

Dental implants refer to the formation of a tooth by implanting metal in the jawbone into the jawbone where the tooth is partially or wholly missing in the oral cavity. Implants can be divided into subperiosteal implants, intraosseous implants, and bone penetrating implants, etc., according to their placement positions, and can be classified into screw-type implants and cylindrical implants according to the appearance of the implant.

The artificial dental system using these implants eliminates the need to mow adjacent teeth and prevents gum bones from being absorbed, creating a functional and aesthetically superior prosthesis, eliminating dentures when speaking, laughing or eating. Has the advantage of.

In general, the artificial dental system is completed by inserting an implant into the alveolar bone and fusion to the bone, joining the abutment to the implant, and then covering the abutment with a crown. The implant is placed in the alveolar bone where the tooth is missing and serves as the root of the artificial tooth.

However, because the implant, abutment and the final prosthesis are connected by a screw structure, repeated repetitive bite force caused by chewing causes the screw to loosen, loosening the connection structure or concentrating the stress, resulting in a fracture of the screw. There is a problem that occurs.

In addition, when the implant and the abutment screwed, there was a problem that the bacteria in the oral cavity can penetrate into the connection portion of the implant and the abutment to cause inflammation around the gum.

Therefore, the present invention is to solve the above problems, an object of the present invention is to provide an artificial tooth system that can exhibit a strong bearing force against the vertical pressure and lateral force while increasing the function of the force distribution.

Another object of the present invention is to provide an artificial dental system that can prevent the bacteria present in the oral cavity to penetrate the coupling site of the implant and abutment causing inflammation around the gums.

1 is a partial cutaway front view of an implant used in a dental implant according to an embodiment of the present invention.

2 is a front view of the preparation tooth according to an embodiment of the present invention.

3 is a cross-sectional view taken along the line II ′ of the abutment of FIG. 2.

Figure 4 is a cross-sectional view showing a state in which the artificial dental system is implanted in the alveolar bone according to an embodiment of the present invention.

5 is a partially enlarged view of FIG. 3.

FIG. 6 is a plan view of the abutment shown in FIG.

Artificial dental system according to the present invention for achieving the above object is an artificial dental system that acts as an artificial tooth root to be mounted in the alveolar bone and prostheses such as artificial teeth, the thread is formed on the outer peripheral surface is implanted in the alveolar bone Implants; And abutment fastened to the top surface of the implant. The implant may include: a screw thread formed along an outer circumferential surface thereof, and a fixture portion at which a female screw is formed in an inner downward direction at the center of the upper end surface; And a recess formed integrally at an upper end of the fixing body and having a recess formed on the upper end thereof, the recess having a first taper extending coaxially with the female screw and having an inner diameter increased to an upper end thereof. It is preferable to include the neck part in which the 2nd taper part whose outer diameter increases below is formed in the outer peripheral part of a surface. The abutment may include: a thread formed at a lower outer circumferential surface thereof to engage with the female screw, and a protrusion formed at the upper outer circumferential surface of the third taper to be received in surface contact with the first tapered portion of the inner circumferential surface of the recess; A wing part integrally formed at an upper end of the protruding part and having a fourth taper part which is in surface contact with a second taper part formed at an outer circumference part of an upper end surface of a neck part of the implant; And a post portion formed integrally with the upper end of the wing portion and tapered to have a smaller diameter upward.

Preferably, the taper angle between the implant neck portion and the abutment wing portion is preferably set in the range of 44 ° to 46 °.

Preferably, the taper size of the upper outer circumference of the implant neck portion and the lower outer circumference of the lower edge of the wing portion of the abutment tooth is formed such that the height and width are in the range of 0.5 mm to 0.7 mm, respectively.

Preferably, the height of the wing of the abutment is formed to fall in the range of 1mm to 3mm.

Preferably, the protruding portion of the abutment is inserted into a recess of the implant to bond with its inner circumferential surface, but the protruding portion of the abutment and the recess of the implant are tapered to reduce the diameter of the abutment surface downward.

Preferably, the taper angle between the protrusion of the abutment and the recess of the implant is set to fall in the range of 7 ° to 9 °.

Preferably, the lower end of the post portion of the abutment adjacent to the wing portion of the abutment is rounded inward.

At this time, the round treatment is made so that the radius of curvature falls in the range of 2 mm to 3 mm from the lower end of the post portion of the abutment to the range of 0.5 mm to 1.0 mm.

Preferably, the post portion of the abutment tooth is provided with an insertion groove having a predetermined width and depth and extending to the upper end in the longitudinal direction.

Preferably, the opposite side of the insertion groove is formed with the insertion groove opposing portion that is planar processing to have a substantially triangular shape.

Preferably, the recess bottom surface diameter of the implant is formed to be larger than the top surface diameter of the female screw, the engaging jaw is formed in the connection of the recess of the implant and the female screw of the implant.

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

1 is a partial cutaway front view of an implant used in an artificial tooth system according to an embodiment of the present invention.

As shown in Figure 1, the implant 10 used in the artificial tooth system according to an embodiment of the present invention is largely the neck portion (B) extending to the upper end of the fixture (A) and the fixture (A) It is configured to include.

The fixing portion (A) of the implant 10 is a portion that is embedded in the bone tissue of the alveolar bone, the fixing body (A) is formed with a screw thread 11 along its outer circumferential surface is inserted into the drill groove formed in the alveolar bone during implant surgery .

On the other hand, a female screw 13 extending downwardly in the center of the upper end surface of the implant 10 is formed having a predetermined diameter and height.

Neck portion (B) is integrally formed at the upper end of the fixing body (A), the connection portion between the fixing body (A) and the neck (B) is formed in a narrow shape to form a curved shape so that the outer diameter gradually increases to the top. Have

The female screw 13 formed in the fixing body portion A communicates with a recess 12 formed in the upper center portion of the neck portion B, and the female screw 13 and the neck portion of the fixing body portion A are connected. The recess 12 in B) extends coaxially.

At this time, the first tapered portion 15 is formed in the inner circumferential surface of the recess 12 formed in the center of the neck portion B to increase the inner diameter. The taper angle of the first tapered portion (15) (θ ₁₎ it is preferably set to around 8 °.

Further, the bottom surface diameter r ₁ of the recess 12 is formed to be larger than the top surface diameter r ₂ of the female screw 13 to form a locking step.

In the circumferential portion of the upper surface of the neck portion B, a second taper portion 14 is formed in which the outer diameter thereof is increased downward.

At this time, the taper angle (θ ₂ ) is preferably set to about 45 °, the outer peripheral portion of the necked portion (B) to be tapered is formed with a height (ω ₁ ) and a width (ω ₂ ) around 0.6mm respectively. .

Figure 2 is a front view of the preparation tooth according to an embodiment of the present invention, Figure 3 is a cross-sectional view when the abutment of Figure 2 along the line I-I 'is shown, Figure 4 According to one embodiment is a cross-sectional view showing the appearance of the artificial dental system is placed in the alveolar bone.

As shown in FIG. 2 and FIG. 3, the preparation tooth 20 is largely comprised of the protrusion part C, the wing part D, and the post part E. FIG.

Looking at the protrusion (C), the lower end of the protrusion (C) is formed with a screw thread 23 on the outer peripheral surface. Therefore, when the implant 10 and the preparation tooth 20 is coupled, the female screw formed on the implant 10 and the male screw formed on the preparation tooth 20 are complementarily coupled.

At this time, the locking jaw formed between the female screw 13 and the recess 12 of the implant 10 prevents stress concentration due to excessive progression of the male screw when the abutment 20 is coupled.

A third taper portion 25 having a diameter increasing upward is formed on the thread 23 of the protrusion C.

This third tapered portion 25 of the abutment protrusion C has a taper angle θ ₃ of the third tapered portion 25 such that the third tapered portion 25 is in surface contact with the first tapered portion 15 of the implant 10. that is identically formed to the first taper angle (θ ₁₎ of the tapered portion 15 is preferred.

Therefore, the 1st taper part 15 and the 3rd taper part 25 are fully in close contact, disperse | distributing the load concentrated below by the bite force to the side, and preventing a loosening phenomenon of a screw.

The upper portion of the protrusion (C) is integrally formed with the wing (D). The lower end of the wing portion (D) is formed with a circumferential portion to have a diameter larger than the diameter of the upper end of the third taper portion 25, the outer peripheral portion is formed with a fourth taper portion 24 of which the inner diameter is reduced upwards. do.

The height ω ₅ of the wing D is selected in the range of 1 mm to 3 mm, which is determined based on the height of the artificial tooth to be formed.

The fourth tapered portion 24 of the abutment blade D has a taper angle θ ₄ of the fourth tapered portion 24 such that the fourth tapered portion 24 is in surface contact with the second tapered portion 14 of the implant 10. 2 are preferably identically formed and the taper angle (θ ₂₎ of the tapered portion (14).

In addition, it is preferable that the height ω ₃ and the width ω _{4 of} the fourth taper 24 are also formed in the same manner as the second taper 14.

Figure 4 is a cross-sectional view showing a state in which the artificial dental system is placed in the alveolar bone according to an embodiment of the present invention.

As shown in FIG. 4, the implant 10 is implanted in the alveolar bone 40, and the abutment 20 protrudes above the alveolar bone 40 of the gum 30 to be coupled to the final prosthesis 50.

At this time, the fourth taper 24 is completely in contact with the second taper 14 formed at the upper end of the implant 10.

As a result, two joining surfaces are formed between the first and third taper portions 15 and 25 and between the second and fourth taper portions 14 and 24, and between the first and third taper portions 15 and 25. The joining surface has a two-stage taper structure formed such that the joining surface between the second and fourth taper portions 14 and 24 is reduced in diameter so that the joining surface is increased upward.

Therefore, it is possible to prevent the penetration of microorganisms, such as bacteria present in the oral cavity into the connection portion of the implant 10 and the preparation tooth 20, and to minimize the loosening phenomenon and stress concentration phenomenon due to repeated occlusal force.

On the other hand, the post portion (E) is integrally formed at the upper end of the wing portion (D). The post part E is used as a part where an artificial tooth, which is a final prosthesis, is attached.

FIG. 5 is a partially enlarged view illustrating an enlarged area indicated by F in FIG. 3.

As shown in FIG. 5, the lower end portion of the post portion E adjacent to the wing portion D is rounded inwardly, and the appearance profile in the alveolar bone after implantation is rounded. The formation of can be easily induced.

The rounding process is performed with the curvature radius R set in the range from the lower end of the post portion E to the set length ω ₃ . At this time, the set length (ω ₃ ) is in the range of 0.5mm to 1mm, preferably up to 0.7mm, the radius of curvature (R) 2mm to 3mm upwards from the lower end of the post portion (E), preferably It is preferable to set it to 2.5 mm.

Groove processing of the insertion groove 22 extending to the upper end in the longitudinal direction while having a predetermined width and depth so that the post portion E can be used by connecting a fastening mechanism that is formed in a mold. On the other side, the insertion groove opposing portion 21 is planar processed so as to have a substantially triangular shape.

The lower end diameter ω ₆ of the post portion E is about 4.3 mm, and the height of the post is in the range of 4 mm to 7 mm.

The size of the post portion E is determined based on the size of the final prosthesis to be fixed. The larger the size of the final prosthesis, the larger the size of the post portion E so that the final prosthesis can be stably supported.

FIG. 6 is a plan view of the abutment of FIG. 2 viewed from the II direction.

The post portion E shown in FIG. 6 is used as a place where an artificial tooth, which is a final prosthesis, is installed, and the grooved insertion groove 22 and the flat grooved insertion groove opposing portion 21 connect the fastening mechanism. At the same time, it is used as a standard for judging and confirming the coupling direction of artificial teeth.

According to the dental implant according to the present invention it is possible to increase the fixing force when implanted in the alveolar bone, increase the occlusal force distribution function and at the same time maintain a strong support for vertical pressure and lateral force.

In addition, according to the dental implant according to the present invention it is possible to prevent the bacteria present in the oral cavity to penetrate into the coupling site of the implant and the preparation teeth to cause inflammation around the gum.

Claims (13)

In the artificial dental system, which is placed in the alveolar bone and serves as an artificial root so that prosthetics such as artificial teeth can be mounted, Implants are formed on the outer peripheral surface is implanted in the alveolar bone; And Includes abutment fastened to the top surface of the implant, The implant, A screw thread is formed along the outer circumferential surface, and a fixture portion in which a female thread is formed in the lower side in the center of the upper surface; And A recess is formed on the upper end and is integrally formed at the upper end of the fixing body, and a recess is formed on the upper end of the inner circumferential surface and a recess is formed on the inner circumferential surface thereof to form a first taper part having an inner diameter increasing to the upper end. The outer periphery of the includes a neck portion (neck) formed with a second taper portion whose outer diameter increases downward, The abutment is A threaded portion formed on the outer peripheral surface of the lower surface to engage with the female screw, and a protrusion formed on the upper outer peripheral surface of the third tapered portion to be received in surface contact with the first tapered portion of the inner peripheral surface of the recess; A wing part integrally formed at an upper end of the protruding part and having a fourth taper part which is in surface contact with a second taper part formed at an outer circumference part of an upper end surface of a neck part of the implant; And It is integrally formed on the upper end of the wing, the post portion tapered to reduce the diameter upwards Artificial tooth system comprising a. The method of claim 1, The taper angle between the neck portion of the implant and the wing portion of the abutment is set to fall in the range of 44 ° to 46 °. The method according to claim 1 or 2, The taper size of the upper periphery of the neck of the implant and the lower periphery of the lower periphery of the wing of the abutment are formed such that the height and width are in the range of 0.5 mm to 0.7 mm, respectively. The method of claim 1, The wing height of the abutment is artificial tooth system, characterized in that formed to fall in the range of 1mm to 3mm. The method of claim 1, The protruding portion of the abutment is inserted into the recess of the implant and bonded to its inner peripheral surface, wherein the protruding portion of the abutment and the recess of the implant are tapered to reduce the diameter of the abutment surface downward. The method of claim 5, wherein And the taper angle between the protrusion of the abutment and the recess of the implant is set to fall in the range of 7 ° to 9 °. The method of claim 1, And a lower end of the post portion of the abutment adjacent to the wing portion of the abutment is rounded inward. The method of claim 7, wherein And said round treatment is made to be in the range of 0.5 mm to 1.0 mm upward from the lower end of the post portion of said abutment. The method according to claim 7 or 8, The round treatment is artificial tooth system, characterized in that the radius of curvature is made in the range of 2mm to 3mm. The method according to any one of claims 1, 5, and 7, The post tooth portion of the abutment artificial dental system, characterized in that the insertion groove having a predetermined width and depth, extending in the longitudinal direction to the upper end. The method of claim 10, Opposite side of the insertion groove is an artificial dental system, characterized in that the insertion groove opposing portion is formed in a planar processing to have a substantially triangular shape. The method according to any one of claims 1, 5, and 7, Recess lower surface diameter of the implant is formed larger than the diameter of the upper surface of the female screw, the artificial dental system, characterized in that the engaging jaw is formed in the connection of the recess of the implant and the female screw of the implant. The method of claim 11, wherein Recess lower surface diameter of the implant is formed larger than the diameter of the upper surface of the female screw, the artificial dental system, characterized in that the engaging jaw is formed in the connection of the recess of the implant and the female screw of the implant.