Tooth implant structure for preventing sinking of the superstructure of a dental implant and loosening of the abutment screw

Abstract

The present invention relates to a dental implant structure for preventing the sinking of the upper structure of a dental implant and loosening of an abutment screw. Specifically, by ensuring that the abutment and the coupling screw portion are tightly fastened without any gaps during fastening, it is possible to prevent the phenomenon of the inside of the abutment caving in even during repeated chewing. The present invention relates to a dental implant structure for preventing the sinking of the upper structure of a dental implant and loosening of an abutment screw. In the present invention, the abutment and the inside of the abutment are each formed in a tapered shape. When the coupling screw portion is fastened to the abutment, there is no gap between the two and the coupling screw portion is tightly fastened. Therefore, it is possible to prevent the phenomenon of the inside of the abutment caving in even during repeated chewing. In addition, by forming the abutment and the inside of the abutment in a tapered shape respectively, there is an effect of minimizing the phenomenon of the coupling screw loosening even during repeated chewing.

Description

Technical Field

[0001] The present invention relates to a dental implant structure for preventing the sinking of the upper structure of a dental implant and loosening of an abutment screw. Specifically, by ensuring that there is no gap when the abutment and the coupling screw part are fastened, it is possible to prevent the phenomenon of the inside of the abutment caving in even after repeated chewing. The present invention relates to a dental implant structure for preventing the sinking of the upper structure of a dental implant and loosening of an abutment screw.

Background Art

[0002] An implant is composed of a prosthesis (crown) that plays the role of a tooth, an abutment that connects the artificial tooth root and the crown, and an artificial tooth root (fixture) that plays the role of a tooth root.

[0003] The artificial tooth root and the abutment play a role of completely supporting the implant, and it is common to connect them in the form of a screw so that they can be firmly connected to each other.

[0004] However, when the screw of the abutment and the abutment are combined, due to two structural problems, a gap is generated between the two.

[0005] Due to such a gap, when performing repeated chewing activities, due to the gap between the screw of the abutment and the abutment, the problem occurs that the abutment caves in internally, sinks downward, and the screw of the abutment loosens. After such loosening of the screw of the abutment occurs, when performing repeated chewing activities, the problem occurs that the screw of the abutment is damaged and the entire implant has to be replaced.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] The present invention aims to prevent the phenomenon that the inside of the abutment caves in even during repeated chewing by forming the abutment and the inside of the abutment in a tapered shape respectively, so that when the coupling screw part is fastened to the abutment, the coupling screw part is fastened without a gap between the two.

[0008] Also, by forming the abutment and the inside of the abutment in a tapered shape respectively, it is an object to minimize the phenomenon that the coupling screw loosens even during repeated chewing.

Means for Solving the Problems

[0009] In order to solve the above problems, the present invention provides a fixture (100) in which a receiving groove (110) is formed to receive an abutment (200) and a coupling screw portion (300), and the outer peripheral surface is formed in a screw shape, an abutment (200) for being fastened to the receiving groove (110) of the fixture (100), and a coupling screw portion (300) that is passed through and fastened to the through hole (210) of the abutment (200), and the lower end is formed to be received and fastened in the receiving groove (110) of the fixture (100). The receiving groove (110) is formed in a shape corresponding to the thread of the fastening screw portion (320) so that the fastening screw portion (320) of the coupling screw portion (300) is received and coupled by forming one side with a thread. The abutment (200) includes a through hole (210) in which a through hole of a predetermined size is formed so that the coupling screw portion (300) passes through and is fastened, a first cutting surface (220) formed by cutting on one outer side of the abutment (200), and a fastening portion (230) formed on one lower side of the abutment (200) and formed in a polygon to prevent rotation when fastening to the fixture (100). The through hole (210) includes a first through hole (211) formed as a through hole of a predetermined length and having a size sufficient for the coupling screw portion (300) to pass through, a first tapered portion (212) formed in a tapered shape in which the diameter decreases in the direction from the first through hole (211) to the second through hole (213), and a second through hole (213) formed by being connected to the lower end of the first tapered portion (212) and having the same diameter as the diameter of the lower end of the first tapered portion (212). When the coupling screw portion (300) is fastened to the abutment (200), the first tapered portion (212) and the second tapered portion (310) are formed in corresponding sizes so that the second tapered portion (310) of the coupling screw portion (300) is fitted and coupled to the first tapered portion (212) of the abutment (200). The first tapered portion (212) is formed at least at a position inserted into the tooth root or at a position protruding by a predetermined length after being inserted into the tooth root.The above-described coupling screw portion (300) includes a second tapered portion (310) formed such that one side of the coupling screw portion (300) has a diameter that decreases from top to bottom, a fastening screw portion (320) formed with a thread for coupling to the receiving groove (110) of the fixture (100), and a mechanism fastening groove (330) formed at the upper portion and having a groove of a predetermined size formed therein so that a rotating mechanism is fastened, and the coupling screw portion (300) is formed to be fastened to the abutment (200) and has a diameter smaller than that of the second through hole (213) of the abutment (200). The line segment l1 drawn along the diameter of the upper portion of the first tapered portion (212), the line segment l2 formed so as to be perpendicular to l1 by a line extending from one side end point of the upper portion of the first tapered portion (212), the point k formed by the intersection of l1 and l2, and the line segment l3 formed to extend from the upper portion to the lower portion of the first tapered portion (212) passing through the point k, and the value of the angle n formed by the line segment l2, the point k, and the line segment l3 is 8 to 15 degrees (°). A dental implant structure is provided.

Effect of the Invention

[0010] In the present invention, the abutment and the inside of the abutment are each formed in a tapered shape. When the coupling screw portion is fastened to the abutment, there is no gap between the two and the coupling screw portion is fastened. Therefore, it is possible to prevent the phenomenon that the inside of the abutment sinks even after repeated chewing. Also, by forming the abutment and the inside of the abutment in a tapered shape respectively, there is an effect of minimizing the phenomenon that the coupling screw loosens even after repeated chewing.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Embodiments for Carrying Out the Invention

[0012] The terms and words used in this specification and the claims should not be construed as being limited to their ordinary or dictionary meanings. Based on the principle that the inventor can appropriately define the concept of the terms in order to explain his invention in the best way, they must be construed in a meaning and concept consistent with the technical idea of the present invention.

[0013] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0014] The present invention relates to a dental implant structure. Specifically, it relates to an implant structure for preventing the phenomenon that the inside of the abutment caves in even after repeated chewing by ensuring that the abutment and the coupling screw part are fastened without gaps when fastened.

[0015] FIG. 1 is a drawing showing the overall appearance of the implant of the present invention, and FIG. 2 is an exploded view of FIG. 1. Referring to these, the implant structure of the present invention is composed of a fixture (100), an abutment (200), and a coupling screw part (300).

[0016] Specific descriptions of each component are as follows.

[0017] The fixture (100) is formed with a receiving groove (110) so that the abutment (200) and the coupling screw part (300) can be received, and the outer peripheral surface is formed in a thread shape.

[0018] One side of the above receiving groove (110) is formed with a thread, so that the fastening screw part (320) of the coupling screw part (300) is received and coupled in a shape corresponding to the thread of the fastening screw part (320).

[0019] FIG. 3 is a cross-sectional view of the implant of the present invention cut, showing a state in which a crown is included at the upper part.

[0020] FIG. 4 is a drawing showing a state in which the abutment and the coupling screw part of the present invention are coupled.

[0021] FIG. 5 is a drawing related to the abutment of the present invention.

[0022] Referring to FIGS. 1 to 5, the abutment (200) is for being fastened to the receiving groove (110) of the fixture (100).

[0023] The abutment (200) includes a through hole (210), a first cutting surface (220), and a fastening portion (230).

[0024] The through hole (210) is formed as a through hole with a predetermined size so that the coupling screw portion (300) passes through and is fastened.

[0025] The through hole (210) is composed of a first through hole (211), a first tapered portion (212), and a second through hole (213). The first through hole (211) is formed as a through hole with a predetermined length and has a size sufficient for the coupling screw portion (300) to pass through.

[0026] The first tapered portion (212) is located between the first through hole (211) and the second through hole (213) and is formed in a tapered shape with a decreasing diameter in the direction from the first through hole (211) to the second through hole (213).

[0027] The second tapered portion (310) of the coupling screw portion (300) is fitted and coupled to the first tapered portion (212). When the abutment (200) and the coupling screw portion (300) are coupled, a gap is not formed between the first tapered portion (212) of the abutment (200) and the second tapered portion (310) of the coupling screw portion (300).

[0028] Also, the first tapered portion (212) is preferably formed at least at a position inserted into the tooth root or at a position protruding by a predetermined length after being inserted into the tooth root, and can prevent the abutment (200) from being crushed during repeated chewing activities after implanting the implant.

[0029] Referring to FIG. 5(b), a line segment l1 drawn along the diameter of the upper part of the first tapered portion (212), a line segment l2 formed by extending from one side end point of the upper part of the first tapered portion (212) and formed perpendicular to l1, The point k generated by the intersection of l1 and l2, and In the line segment l3 formed by passing through the point k and extending from the upper part to the lower part of the first tapered portion (212), The value of the angle n formed by the line segment l2, the point k, and the line segment l3 is 8 to 15 degrees (°), preferably 12 degrees (°).

[0030] The second through hole (213) is formed by being connected to the lower end of the first tapered portion (212), and is formed to have a predetermined length, but is formed to have the same diameter as the diameter of the lower part of the first tapered portion (212).

[0031] The first cutting surface (220) is a surface formed by cutting on the outer side of the abutment (200).

[0032] The fastening portion 230 is formed on the lower side of the abutment 200, but is formed in a polygon so as to prevent rotation when fastening to the fixture 100.

[0033] FIG. 6 is a drawing related to the coupling screw portion of the present invention.

[0034] The coupling screw portion (300) is formed to penetrate and fasten to the abutment (200), and the lower end is received and fastened in the receiving groove (110) of the fixture (100).

[0035] The coupling screw portion (300) includes a second tapered portion (310), a fastening screw portion (320), and a mechanism fastening groove (330).

[0036] The second tapered portion (310) is formed such that the diameter becomes narrower from the upper part to the lower part. The second tapered portion (310) is formed in a size and shape corresponding to the first tapered portion (212) of the abutment (200). When the coupling screw portion (300) is fastened to the abutment (200), the second tapered portion (310) is received in the first tapered portion (212) and the two are coupled so that there is no empty space between them.

[0037] The fastening screw part (320) is formed with screw threads and is for being coupled to the receiving groove (110) of the fixture (100) as shown in FIG. 3.

[0038] The mechanism fastening groove (330) is formed at the upper part, and is formed such that a mechanism that rotates by forming a groove of a predetermined size is fastened and the coupling screw part (300) is fastened to the abutment (200).

[0039] The mechanism fastening groove (330) is formed to extend along the lower end of the second tapered part (310), and is preferably formed to have a diameter smaller than that of the second through hole (213) of the abutment (200) so as to enable smooth penetration.

[0040] The crown (400) is formed on the upper part of the abutment (200).

[0041] Referring to FIG. 3, the state in which the crown (400) is formed on the upper part of the abutment (200) can be confirmed.

[0042] FIG. 7 is a drawing relating to the custom abutment and the coupling screw part of the present invention.

[0043] FIG. 8 is a cross-sectional view relating to the custom abutment and the coupling screw part of the present invention.

[0044] FIG. 9 is a drawing relating to the custom abutment of the present invention.

[0045] FIG. 10 is a cross-sectional view relating to the custom abutment of the present invention.

[0046] The custom attachment (500) is formed with a first coupling screw fastening hole (510) such that the coupling screw part (300) penetrates and is fastened to one side.

[0047] The above custom abutment (500) can be used in place of the abutment (200), and the coupling screw portion (300) may be passed through and fastened within the custom abutment (500).

[0048] The first coupling screw fastening hole (510) is composed of a third tapered portion (511) and a third through hole (512).

[0049] The third tapered portion (511) is formed such that the diameter becomes narrower from the upper part to the lower part, and is formed in a shape corresponding to the second tapered portion (310) of the coupling screw portion (300).

[0050] That is, when the coupling screw portion (300) is fastened to the custom abutment (500), it is preferable that the third tapered portion (511) and the second tapered portion (310) are formed to have the same size so that the second tapered portion (310) of the coupling screw portion (300) is fitted and coupled to the third tapered portion (511) of the custom abutment (500).

[0051] The third through hole (512) is a hole formed by extending to the lower end of the third tapered portion (511), and is formed with the same diameter as the diameter of the lower end of the third tapered portion (511).

[0052] Also, the third through hole (512) is preferably formed to have a diameter larger than a portion formed by extending along the lower end of the second tapered portion (310) of the coupling screw portion (300).

[0053] Figs. 11 to 13 are diagrams showing a state in which the inside of the angled abutment (600) applied for applying the coupling screw portion (300) of the present invention is deformed into a form corresponding to the coupling screw portion (300).

[0054] Fig. 11 is a drawing showing a state in which the coupling screw portion of the present invention is fastened to the angled abutment.

[0055] FIG. 12 is a view showing a state where the angle abutment and the coupling screw portion are separated.

[0056] FIG. 13 is a drawing showing a state where the inside is projected with the angle abutment and the coupling screw portion coupled.

[0057] Referring to FIGS. 11 to 13, the angle abutment (600) is formed in a shape in which the upper one side is inclined obliquely, and a second coupling screw fastening hole (610) is formed so that the coupling screw portion (300) is received and fastened.

[0058] The second coupling screw fastening hole (610) is configured to include a fourth tapered portion (611) and a fourth through hole (612).

[0059] The fourth tapered portion (611) is formed so that the diameter becomes narrower from the upper part to the lower part, and is formed in a shape corresponding to the second tapered portion (310) of the coupling screw portion (300).

[0060] That is, when the coupling screw portion (300) is fastened to the angle abutment (600), the fourth tapered portion (611) and the second tapered portion (310) are preferably formed to have the same size so that the second tapered portion (310) of the coupling screw portion (300) is fitted and coupled to the fourth tapered portion (611) of the angle abutment (600).

[0061] The fourth through hole (612) is a hole formed by extending to the lower end of the fourth tapered portion (611), and is formed with the same diameter as the diameter of the lower end of the fourth tapered portion (611).

[0062] Also, the fourth through hole (612) is preferably formed to have a diameter larger than a portion formed by extending along the lower end of the second tapered portion (310) of the coupling screw portion (300).

[0063] Figures 14 to 16 are diagrams showing a state in which the inside of the internal abutment (700) applied for applying the coupling screw portion (300) of the present invention is deformed in a form corresponding to the coupling screw portion (300).

[0064] Figure 14 is a drawing showing a state in which the coupling screw portion of the present invention is fastened to the internal abutment.

[0065] Figure 15 is a diagram showing a state in which the internal abutment and the coupling screw portion are separated.

[0066] Figure 16 is a diagram showing a state in which the inside is projected with the internal abutment and the coupling screw portion being coupled.

[0067] Referring to Figures 14 to 16, the internal abutment (700) is for being coupled inside the fixture, and a third coupling screw fastening hole (710) is formed so that the coupling screw portion (300) is received and fastened.

[0068] The third coupling screw fastening hole (710) is configured to include a fifth tapered portion (711) and a fifth through hole (712).

[0069] The fifth tapered portion (711) is formed such that the diameter becomes narrower from the upper part to the lower part, and is formed in a form corresponding to the second tapered portion (310) of the coupling screw portion (300).

[0070] That is, when the coupling screw portion (300) is fastened to the internal abutment (700), the fifth tapered portion (711) and the second tapered portion (310) are preferably formed to have the same size so that the second tapered portion (310) of the coupling screw portion (300) is fitted and coupled to the fifth tapered portion (711) of the internal abutment (700).

[0071] The fifth through hole (712) is a hole formed by extending to the lower end of the fifth tapered portion (711), and is formed to have the same diameter as the diameter of the lower end of the fifth tapered portion (711).

[0072] Further, the fifth through-hole (712) is preferably formed to have a diameter larger than that of a portion formed along the lower end of the second tapered portion (310) of the coupling screw portion (300).

[0073] Thus, it goes without saying that the present invention can change the internal structure of these other various abutments into a structure to which the coupling screw portion (300) can be fastened.

[0074] The embodiments described in the present specification and the configurations shown in the drawings as described above are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there are various equivalents and modifications that can replace these.

Description of Reference Numerals

[0075] 100 Fixture 110 Receiving groove 200 Abutment 210 Through-hole 211 First through-hole 212 First tapered portion 213 Second through-hole 220 First cutting surface 230 Fastening portion 300 Coupling screw portion 310 Second tapered portion 320 Fastening screw portion 330 Mechanism fastening groove 400 Crown 500 Custom abutment 510 First coupling screw portion fastening hole 511 Third tapered portion 512 Third through-hole 600 Angle abutment 610 Second coupling screw portion coupling hole 611 Fourth tapered portion 612 Fourth through-hole 700 Internal abutment 710 Third coupling screw part, coupling hole 711 Fifth tapered part 712 Fifth through hole

Claims

【Claim 1】 A fixture (100) having a receiving groove (110) formed therein for receiving an abutment (200) and a coupling screw portion (300), and having an outer peripheral surface formed in a thread shape; An abutment (200) for being fastened to the receiving groove (110) of the fixture (100); A coupling screw portion (300) that penetrates and is fastened through a through hole (210) of the abutment (200), and has a lower end formed to be received and fastened in the receiving groove (110) of the fixture (100); One side of the receiving groove (110) is formed with a thread, and is formed in a shape corresponding to the thread of the fastening screw portion (320) so that the fastening screw portion (320) of the coupling screw portion (300) is received and coupled; The abutment (200) has A through hole (210) formed with a through hole of a predetermined size so that the coupling screw portion (300) penetrates and is fastened; A first cut surface (220) formed by cutting on one outer side of the abutment (200); A fastening portion (230) formed on one lower side of the abutment (200) and formed in a polygon to prevent rotation when fastening to the fixture (100); The through hole (210) has A first through hole (211) formed as a through hole of a predetermined length and having a size sufficient for the coupling screw portion (300) to pass through; One side of the through hole (210) is formed with a first tapered portion (212) that tapers so that the diameter decreases in the direction from the first through hole (211) to the second through hole (213); A second through hole (213) that is connected to the lower end of the first tapered portion (212), is formed to have a predetermined length, and is formed to have the same diameter as the diameter of the lower portion of the first tapered portion (212); When the coupling screw portion (300) is fastened to the abutment (200), the first tapered portion (212) and the second tapered portion (310) of the coupling screw portion (300) are formed to have corresponding sizes so that the second tapered portion (310) of the coupling screw portion (300) is fitted and coupled to the first tapered portion (212) of the abutment (200); The first tapered portion (212) is characterized in that it is formed at either a position inserted into at least the tooth root or a position protruding by a predetermined length after being inserted into the tooth root; The coupling screw portion (300) has A second tapered portion (310) formed such that one side of the coupling screw portion (300) becomes narrower in diameter from top to bottom; A fastening screw portion (320) formed with screw threads for being coupled to the receiving groove (110) of the fixture (100); A mechanism fastening groove (330) formed at the upper portion, with a groove of a predetermined size formed therein so that a rotating mechanism is fastened, and the coupling screw portion (300) is formed to be fastened to the abutment (200) and has a diameter smaller than that of the second through hole (213) of the abutment (200); A line segment l1 drawn along the diameter of the upper end of the first tapered portion (212); A line segment l2 formed by extending from one side end point of the upper portion of the first tapered portion (212) and formed to be perpendicular to l1; A point k generated by the intersection of l1 and l2; In a line segment l3 formed by extending from the upper portion to the lower portion of the first tapered portion (212) after passing through the point k; An implant structure for teeth, characterized in that the value of an angle n formed by the line segment l2, the point k, and the line segment l3 is 8 to 15 degrees (°).

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