Structure of the implant pillar

Abstract

This invention provides a structure for implant pillars that helps extend the lifespan of implant bodies and pillars, while simultaneously maintaining gum health and increasing the success rate of dental implant surgery. [Solution] The structure of the pillar of an implant body includes an implant body 10 and a pillar 20 incorporated from the top of the implant body, wherein the pillar has a connecting portion 21 and a basement portion 22 extending from bottom to top, the bottom area of ​​the basement portion is larger than the upper edge of the connecting portion, and a stepped shoulder portion 23 is formed, the shoulder portion abuts against the top of the implant body to be in a positioning state, preventing the pillar from continuously sinking due to the action of occlusal force, thereby preventing rupture damage to the implant body.

Description

Technical Field

[0001] The present invention relates to the structure of a pillar used in dental implant surgery, and particularly to a structure of a pillar of an implant body that can prevent the implant body from bursting and damaging, which helps to extend the service life of the implant body and the pillar, and at the same time improves the success rate of dental implant surgery.

Background Art

[0002] Generally, dental implant surgery is a means for supplementing missing teeth in oral medicine. In a dental implant system, a reliable joint between an implant body and a pillar supporting a denture is extremely important for the long-term stability of the system. In the prior art, for the joint between an implant body and a pillar, in many cases, a taper fitting design is adopted to provide excellent adhesion. Further, as shown in FIGS. 7 and 8, as an example of a conventionally used implant system, it includes an implant body 40 and a pillar 50 incorporated from the top end of the implant body 40. The pillar 50 has a conical column portion 51 and a basement portion 52. On the bottom surface of the basement portion 52, a curved conical portion 521 connected to the conical column portion 51 is formed. The conical column portion 51 is incorporated into the top end of the implant body 40. The curved conical portion 521 of the basement portion 52 protrudes from above the implant body 40. Also, the top end of the basement portion 52 is provided for a denture 60 to be pivotally installed.

[0003] However, since the joint between the curved cone portion 521 of the basement portion 52 and the surface of the conical column portion 51 lacks a locking effect, although a stable joint state can be achieved initially, under the long-term action of occlusal forces, the conical column portion 51 may eventually develop a slight tendency to sink. Due to frictional wear of the metal, the curved cone portion 521 of the basement portion 52 may come into contact with the end face of the implant body 40, causing stress concentration on the wall surface of the implant body 40. As shown in Figure 9, this may create a potential risk of the implant body 40 rupturing or being damaged. Therefore, how to further strengthen the locking structure and ensure the stability of the joint is an urgent issue that needs to be resolved in this field.

[0004] In light of this, the inventor, based on many years of experience in manufacturing, development, and design of products in this field, and many years of practical experience in clinical dental implant treatment, has obtained this practical invention after detailed design and precise evaluation to achieve the above objectives. [Overview of the project]

[0005] The technical problem that this invention aims to solve is to resolve the aforementioned drawbacks of the prior art and to provide a structure for an implant body pillar, the structure including an implant body and a pillar incorporated from the top of the implant body, the pillar having a joint portion and a base portion from bottom to top, the bottom area of ​​the base portion being larger than the upper edge of the joint portion forming a stepped shoulder portion, the shoulder portion being positioned by contacting the top of the implant body, and even after the pillar has been worn down by occlusal force over a long period of time, the shoulder portion can still contact the top of the implant body, thereby preventing the pillar from continuously sinking and thereby preventing rupture damage to the implant body.

[0006] Preferably, a connecting platform is formed at the top of the implant body, a conical groove is provided that is recessed downward from the connecting platform, a non-circular hole is formed at the bottom of the conical groove, a screw hole is provided further below the non-circular hole, the connecting portion of the pillar is formed in a conical column shape from top to bottom and is incorporated into the conical groove, and a non-cylindrical portion is further formed at the bottom of the connecting portion, which engages and fixes with the non-circular hole, and the shoulder portion further abuts against the connecting platform.

[0007] Preferably, the top end of the joint is provided with a reduced diameter surface adjacent to the shoulder portion, and the outer diameter of the reduced diameter surface does not coincide with the inner diameter of the conical groove, forming a gap so that the joint of the pillar and the conical groove of the implant body can be precisely locked and tightly fitted together, and a tolerance gap is formed between the shoulder portion and the connecting platform, and this tolerance gap is in the range of 20 to 50 μm.

[0008] Preferably, there is an angle of 11° between the extension line of the reduced diameter surface and the extension line of the conical column of the joint.

[0009] Preferably, the bottom surface of the shoulder portion is provided with an annular groove recessed along the extension of the reduced diameter surface, and the outer ring surface of the annular groove is formed with a tapered slope that widens outward.

[0010] Comparison with the effects of the conventional technology: The pillar of this invention is designed so that its shoulder portion abuts against the connecting platform to be in a positioned state. This reliably prevents the joint from sinking further into the conical cistern by occlusal force, preventing the conical cistern from being pushed open by the sinking of the joint and causing the wall surface of the implant body to rupture and be damaged. This helps to extend the service life of the implant body and the pillar, while simultaneously maintaining gum health and increasing the success rate of dental implant surgery. [Brief explanation of the drawing]

[0011] [Figure 1]This is an exploded view showing the implant body and pillar of the present invention. [Figure 2] This is an exploded view showing the dental implant system of the present invention. [Figure 3] This is a schematic diagram illustrating the dental implant surgery procedure of the present invention. [Figure 4] This is a cross-sectional view showing the dental implant surgery procedure of the present invention. [Figure 5] This is an enlarged cross-sectional view showing a portion corresponding to Figure 4 of the present invention. [Figure 6] This is an enlarged cross-sectional view showing a local area at a selected location corresponding to Figure 5 of the present invention. [Figure 7] This is an exploded view showing a conventional implant body and pillar. [Figure 8] This is a cross-sectional view showing a conventional dental implant surgery procedure. [Figure 9] This is a schematic diagram illustrating a situation in which the implant body is compressed due to the sinking of the conventional pillar, causing its wall surface to rupture or be damaged. [Modes for carrying out the invention]

[0012] In order to ensure a thorough understanding and recognition of the purpose, features, and effects of this invention, the following will provide a detailed explanation, using the drawings in the brief description of the drawings as examples of implementation.

[0013] First, as shown in Figures 1 and 2, the structure of the implant pillar includes an implant body 10 and a pillar 20 incorporated from the top end of the implant body 10. The pillar 20 has a connecting portion 21 and a base portion 22 extending from bottom to top. The bottom area of ​​the base portion 22 is larger than the upper edge of the connecting portion 21, forming a stepped shoulder portion 23. The shoulder portion 23 abuts against the top end of the implant body 10 to position it, preventing the pillar 20 from continuously sinking and thereby preventing rupture damage to the implant body 10.

[0014] Furthermore, regarding the details of the embodiment of the structure, as shown again in Figures 1, 2, and 5, a connection platform 11 is formed at the top of the implant body 10, a conical groove 12 is provided in the center of the connection platform 11 that is recessed downwards, a non-circular hole portion 121 is formed at the bottom of the conical groove 12, a screw hole 122 is provided further below the non-circular hole portion 121, the connecting portion 21 of the pillar 20 is formed in a conical column shape that contracts inwards from top to bottom, and is connected and incorporated into the conical groove 12, and a non-cylindrical portion 211 is further formed at the bottom of the connecting portion 21 and is engaged and fixed with the non-circular hole portion 121, the shoulder portion 23 abuts against the connection platform 11, the pillar 20 is provided with a through hole 24 that penetrates the center of its upper and lower ends, and the through hole 24 communicates with the screw hole 122.

[0015] As shown again in Figure 6, the top end of the joint 21 has a reduced diameter surface 212 adjacent to the shoulder portion 23, and there is an angle A of 11° between the extension of the reduced diameter surface 212 and the conical extension of the joint 21. When the joint 21 is joined and assembled into the conical groove 12, the outer diameter of the reduced diameter surface 212 does not coincide with the inner diameter of the conical groove 12, forming a gap 25, which allows the joint 21 of the pillar 20 and the conical groove 12 of the implant body 10 to be precisely locked and tightly fitted together. Furthermore, after being precisely and firmly connected between the joint 21 and the conical groove 12, the shoulder portion 23 and the A tolerance gap 231 is formed between the connecting platform 11 and the shoulder portion 23, which is in the range of 20 to 50 μm. As a result, since the tolerance gap 231 is provided in advance, even if the pillar 20 sinks due to wear caused by occlusal force, the shoulder portion 23 can still further contact the connecting platform 11, thereby preventing damage to the implant body due to further sinking of the pillar 20. Furthermore, an annular groove 26 is provided on the bottom surface of the shoulder portion 23, recessed along the extension of the reduced diameter surface 212, and a tapered slope 261 is formed on the outer ring surface of the annular groove 26 so as to widen outwards.

[0016] When this structure is actually used, as shown in FIGS. 2 to 5, when performing a dental implant surgery, first, the implant body 10 is implanted into the alveolar bone of the patient. After the implant body 10 and the alveolar bone are firmly connected, the pillar 20 is tightly incorporated into the conical groove 12 of the implant body 10 through the joint part 21. By engaging and fixing between the non-cylindrical part 211 at the bottom and the non-circular hole part 121, at the same time, the shoulder part 23 is adjacent to the connection platform 11 at the distance of the tolerance gap 231. After the gum has healed, the denture 30 is assembled and fixed to the pillar 20 using the bolt 31 to perform the dental implant surgery. Thus, due to the pre-prepared design of the tolerance gap 231, even when the pillar 20 sinks due to the biting force, the shoulder part 23 can still effectively abut and be locked to the joint platform 11, reliably preventing the joint part 21 from sinking further into the conical groove 12 due to the biting force, preventing the situation where the conical groove 12 is expanded by the sinking of the joint part 21 and the wall surface of the implant body 10 is ruptured and damaged. This helps to extend the service life of the implant body 10 and the pillar 20, maintain the health of the gum, and improve the success rate of the dental implant surgery.

[0017] The above is only a part of the embodiments according to the present invention, and does not limit the scope of implementation of the present invention. That is, changes, modifications, etc. made within the scope of the claims of the present invention should also belong to the scope of the present invention.

Explanation of Reference Numerals

[0018] [[ID=eleven]]] 10, 40 Implant body 11 Connection platform 12 Conical groove 121 Non-circular hole part 122 Threaded hole <000008S>20, 50 Pillar 21 Joint part 211 Non-cylindrical part 212 Diameter-reduced surface 22, 52 Basement part 23 Shoulder part 231 Tolerance gap 24 Through hole 25 Gap 26 Annular groove 261 Tapered slope 30, 60 Denture 31 Bolt 51 Conical column part 521 Curved surface conical part A Included angle

Claims

1. A structure of a pillar for an implant body, comprising an implant body and a pillar incorporated from the apical end of the implant body, The pillar is provided with a joint and a base portion extending from bottom to top, the bottom area of ​​the base portion is larger than the upper edge of the joint portion, a stepped shoulder portion is formed, the shoulder portion abuts against the top of the implant body to position it, preventing the pillar from continuously sinking due to the action of occlusal force, thereby preventing rupture and damage to the implant body.

2. The structure of the pillar of the implant body according to claim 1, characterized in that a connecting platform is formed at the top of the implant body, a conical groove is provided that is recessed toward the bottom of the connecting platform, a non-circular hole is formed at the bottom of the conical groove, a screw hole is provided further below the non-circular hole, the connecting portion of the pillar is formed in a conical column shape from top to bottom and is incorporated into the conical groove, and a non-cylindrical portion is further formed at the bottom of the connecting portion and engages and is fixed with the non-circular hole, and the shoulder portion abuts against the connecting platform.

3. The structure of the pillar of the implant body according to claim 2, characterized in that the top end of the joint portion has a reduced diameter surface adjacent to the shoulder portion, the outer diameter of the reduced diameter surface does not coincide with the inner diameter of the conical groove, and a gap is formed so that the joint portion of the pillar and the conical groove of the implant body can be precisely locked and tightly fitted together, and a tolerance gap is formed between the shoulder portion and the connecting platform, and the tolerance gap is in the range of 20 to 50 μm.

4. The structure of the implant pillar according to claim 3, characterized in that an annular groove is provided on the bottom surface of the shoulder portion, recessed along the extension of the reduced diameter surface, and the outer ring surface of the annular groove is formed with a tapered slope that widens outward.

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