Dental healing abutment

Abstract

A healing abutment for a dental implant is disclosed, which is fastened to an implant body implanted in the alveolar bone to restore the gums before placing an artificial tooth prosthesis. The healing abutment for a dental implant according to the present invention is characterized by comprising an insertion portion inserted into the implant body, a gum removal portion formed on the upper part of the insertion portion, and cutting blades formed on the gum removal portion. According to the present invention, when combined with an implant body implanted in the alveolar bone, the removal of remaining alveolar bone around the implant body is performed simultaneously, thereby eliminating the need for a separate surgical instrument such as a 'bone profiler,' and clearly resolving the problem of incomplete fastening or connection with the implant body caused by remaining alveolar bone around the implant body.

Description

Technology Field

[0001] The present invention relates to a healing abutment for a dental implant, and more particularly to a healing abutment for a dental implant that is fastened to an implant body implanted in the alveolar bone to restore the gums before placing an artificial tooth prosthesis. Background Technology

[0002] A dental implant is a prosthetic device implanted into oral tissues, such as within bone tissue, to maintain and support a prosthesis, and is designed to replace the root of a lost tooth. More specifically, dental implants function to restore the natural function of a tooth by implanting an artificial root, made of materials such as titanium that do not cause rejection by the human body, into the alveolar bone to promote osseofusion, and then attaching an artificial tooth.

[0003] Dental implant procedures generally involve the process of implanting an implant body, which serves as an artificial tooth root, into the alveolar bone, followed by a osseointegration period of approximately 3 to 6 months, and finally fixing the prosthesis. The implant body, which is implanted into the alveolar bone, is the substructure of the implant and generally has a screw shape; it can be classified into various types depending on the implantation position (height) relative to the alveolar bone.

[0004] The implant body can be fabricated in a predetermined shape and implanted into the alveolar bone. An implant superstructure is attached to the implant body. The superstructure may include an abutment attached to the implant body and a tooth-shaped crown attached to the abutment. Here, the abutment may be secured to the implant body by a screw fastening method.

[0005] A healing abutment may be used during the period of osseointegration after the implant body is implanted into the alveolar bone. The healing abutment serves to stabilize the gums and prevent foreign substances from entering the interior of the implant body while the implanted implant body fuses with the bone. This healing abutment can be secured to the implant body using a screw fastening method.

[0006] When attaching a healing abutment to an implant body embedded in the alveolar bone, it is necessary to additionally remove alveolar bone or gum tissue surrounding the implant body. This is because if the surrounding alveolar bone or gum tissue encroaches upon the attachment area of ​​the healing abutment, interference may occur between the bone or gum tissue and the healing abutment, potentially making attachment impossible or incomplete.

[0007] Situations where the alveolar bone or gum surrounding the implant body encroaches upon the attachment area of ​​the healing abutment are likely to occur in indications where the implant body must be implanted deeply depending on the condition of the alveolar bone. In this case, a surgical instrument called a 'Bone Profiler' is used to perform a procedure to remove the remaining alveolar bone or gum in the area where the healing abutment is attached, following the sequence exemplified in Fig. 1.

[0008] This surgical instrument is attached to a dental handpiece and rotates rapidly to remove alveolar bone or gum tissue surrounding the implant body. At this time, to ensure the smooth attachment of the healing abutment, the shape and dimensions of the instrument are selected to correspond appropriately with the shape and dimensions of the healing abutment to be attached to the implant body.

[0009] However, such conventional surgical methods, that is, methods of additionally removing surrounding alveolar bone or gums using the above surgical instrument to prevent interference with fastening, have the disadvantage of being considerably cumbersome and potentially affecting the fixation strength of the implant body, as they require going through several steps such as removing gum tissue, trimming surrounding bone, removing the cover screw, and removing surrounding bone, as shown in the example of Fig. 1. Prior art literature

[0010] Korean Registered Patent No. 10-2204414 (Registration Date 2021.01.12) The problem to be solved

[0011] The technical problem that the present invention aims to solve is to provide a healing abutment for dental implants that can eliminate the use of separate surgical instruments such as a bone profiler. means of solving the problem

[0012] According to an embodiment of the present invention as a means of solving the problem, a healing abutment for a dental implant is provided, which is fastened to an implant body implanted in the alveolar bone to restore the gums before placing an artificial tooth prosthesis, and comprises an insertion part inserted into the implant body, a gum removal part formed on the upper part of the insertion part, and cutting blades formed on the gum removal part to remove alveolar bone remaining around the implant body.

[0013] Here, the insertion part may be composed of a tapered contact part that makes surface contact with the tapered inner surface of the implant body, a fastening part formed with a diameter smaller than the lowest diameter of the contact part and having a screw thread formed at a certain height that screws with the inner surface of the implant body, and a joint part that connects the contact part and the fastening part and has a concave curved surface on its circumference. In this case, the contact part may preferably be composed of a first contact part that is connected to the lower end of the gum removal part and has a diameter that decreases as it goes down, and a second contact part that is connected to the lower end of the first contact part and has a diameter that decreases more significantly as it goes down compared to the first contact part.

[0014] And the fastening portion applied to the healing abutment according to an embodiment of the present invention may be composed of a threaded portion having the threads formed over a certain height around the circumference and a non-threaded portion disposed between the threaded portion and the joint portion and having no threads formed therein, and the gum removal portion may be composed of a tapered portion connected to the upper end of the insertion portion and not inserted into the implant body, and a head portion at the upper end of the tapered portion, wherein cutting blades for removing alveolar bone remaining around the implant body may be formed on the circumference of the head portion.

[0015] The head portion may preferably be composed of a cylindrical bulge and a tapered neck portion between the bulge and the tapered portion, and a cutting edge may be formed extending from the neck portion to a part of the bulge. The upper surface of the bulge is formed as an upwardly convex arched convex surface, and a tool coupling groove is formed in the center of the arched convex surface, such that a cross shape, a plus shape, or a planar shape is a triangular or polygonal shape, thereby allowing a tool such as a screwdriver to be coupled to the tool coupling groove to rotate the healing abutment, and accordingly, the healing abutment can be coupled to the implant body or separated from the implant body.

[0016] As a preferred example, the cutting blades may be formed perpendicularly to the periphery of the gum removal portion, and as another example, the cutting blades may be formed diagonally to the periphery of the gum removal portion.

[0017] At this time, if the inclined direction of the cutting blades formed diagonally is configured to be the same as the direction of the screw threads included in the insertion part, the gums or residual bone removed or deleted by the cutting blades can be pushed upward while flowing spirally along the groove formed between the rotating cutting blades and easily discharged outside the gums, thereby significantly reducing adverse effects caused by the internal retention of the cut skin tissue and bone. Effects of the invention

[0018] According to the healing abutment of an embodiment of the present invention, residual alveolar bone or gum tissue surrounding the implant body can be simultaneously removed or eliminated during the process of being fastened to the implant body. Accordingly, the use of separate surgical instruments such as a 'bone profiler instrument' can be eliminated, and the problem of incomplete fastening of the healing abutment caused by residual alveolar bone can also be resolved.

[0019] In addition, since the use of a separate surgical instrument such as this profiler device is excluded, the inconvenience is reduced, which can provide convenience during the procedure and has the advantage of shortening the procedure time accordingly. Brief explanation of the drawing

[0021] FIG. 1 is a drawing illustrating, in sequence, the removal of remaining alveolar bone or gums in the area where a healing abutment is to be attached using a conventional surgical instrument. FIG. 2 is a drawing showing a healing abutment according to a first embodiment of the present invention coupled to an implant body. FIG. 3 is an exploded perspective view of a healing abutment and an implant body according to a first embodiment of the present invention. FIG. 4 is a front view of a healing abutment according to a first embodiment of the present invention. Fig. 5 is a cross-sectional perspective view of the healing abutment shown in Fig. 4. FIG. 6 is an enlarged view of the main part of a healing abutment according to the first embodiment of the present invention. FIGS. 7A and 7B are drawings illustrating the process of attaching a healing abutment to an implant body according to a first embodiment of the present invention. FIG. 8 is an enlarged view of the main part of a healing abutment according to a second embodiment of the present invention. Specific details for implementing the invention

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0023] The terms used in the specification are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise.

[0024] In this specification, terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not excluding in advance the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0025] In addition, where it is stated that a component is "connected," "combined," or "joined" to another component, it should be understood that while the component may be directly connected or joined to the other component, another component may also be "connected," "combined," or "joined" between each component.

[0026] And terms such as first, second, etc., may be used to describe various components, but said components shall not be limited by said terms. said terms are used solely for the purpose of distinguishing one component from another.

[0027] In describing the invention with reference to the attached drawings, identical components are assigned the same reference numerals, and redundant descriptions thereof are omitted. Furthermore, in describing the invention, if it is determined that a detailed description of related prior art could unnecessarily obscure the essence of the invention, such detailed description is omitted.

[0028] FIG. 2 is a drawing showing a healing abutment according to a first embodiment of the present invention coupled to an implant body, and FIG. 3 is an exploded perspective view of a healing abutment and an implant body according to a first embodiment of the present invention.

[0029] Referring to FIGS. 2 and 3, a healing abutment (2) for a dental implant according to the first embodiment of the present invention is fastened to an implant body (1) implanted in the alveolar bone to restore the gums before placing an artificial tooth prosthesis, and may include an insertion part (20) inserted into the implant body (1) and a gum removal part (26) formed on the upper part of the insertion part (20) to remove the gums.

[0030] The implant body (1) can be implanted into the alveolar bone to be implanted. For example, the implant body (1) can be implanted into the alveolar bone while rotating around a central axis in the vertical direction based on FIG. 2. To this end, the implant body (1) may have screw threads formed on its outer surface, and may have an internal groove (10) formed in which a part of the healing abutment (the insertion part (20)) according to an embodiment of the present invention is inserted and fixed.

[0031] Although the inner groove (10) is not illustrated, it may be composed of a support portion having a tapered inner surface with a diameter that decreases as it goes downward, and a coupling portion formed at the bottom of the support portion with a diameter smaller than that of the support portion and having screw threads formed on its inner surface. The contact portion (22) constituting the insert portion (20) is supported in a structure that makes surface contact with the support portion, and a fastening portion (24), which is another component constituting the insert portion (20), may be screw-fastened to the coupling portion.

[0032] The healing abutment (2) according to the first embodiment of the present invention can be firmly connected to the implant body (1) by screw fastening between the connecting part and the connecting part (24), and during the process of the healing abutment (2) rotating and connecting to the implant body (1), the alveolar bone or gum remaining around the implant body (1) can be removed or deleted by the cutting blade (29).

[0033] A number of cutting blades (29) may be formed on the circumferential surface of the gum removal portion (26). Accordingly, during the process of rotating the healing abutment (2) according to the first embodiment of the present invention to attach it to the implant body (1), the function of removing or cutting alveolar bone or gum remaining around the implant body (1) can be implemented, and therefore, the use of a separate surgical instrument such as a bone profiler can be excluded.

[0034] Let us examine the configuration of the healing abutment according to the first embodiment of the present invention in more detail.

[0035] FIG. 4 is a front view of a healing abutment according to a first embodiment of the present invention, FIG. 5 is a cutaway perspective view of the healing abutment shown in FIG. 4, and FIG. 6 is an enlarged view of the main part of the healing abutment according to a first embodiment of the present invention.

[0036] Referring to FIGS. 4 to 6, the healing abutment (2) according to the first embodiment of the present invention may include, as previously mentioned, an insertion part (20) inserted into an implant body (1), a gum removal part (26) formed on the upper part of the insertion part (20) to induce the formation of gums, and cutting blades (29) formed on the gum removal part (26) to remove or eliminate alveolar bone remaining around the implant body (1).

[0037] The insertion portion (20) inserted into the implant body (1) specifically includes a tapered contact portion (22) having a shape corresponding to the support portion (not shown) having a tapered inner surface of the implant body (1) so as to make surface contact with the support portion. Additionally, it includes a fastening portion (24) integrally formed at the bottom of the contact portion (22), formed with a diameter smaller than the lowest diameter of the contact portion (22), and screw-fastened to the coupling portion of the implant body (1).

[0038] When the healing abutment (2) rotates to be connected to the implant body (1), the contact portion (22) comes into surface contact with the inner surface of the support portion on the inner side, thereby allowing it to be stably connected to the implant body (1) while maintaining concentricity without shaking. The contact portion (22) and the connecting portion (24) may be connected by a joint portion (23) that forms a concave curved surface on its circumference.

[0039] The contact portion (22) is preferably composed of a first contact portion (220) that is connected to the lower end of the gum removal portion (26) and has a diameter that decreases as it goes down, and a second contact portion (222) that is connected to the lower end of the first contact portion (220) and has a diameter that decreases more significantly as it goes down compared to the first contact portion (220), so that when fastened to the implant body (1), the initial entry of the contact portion (22) into the support portion is facilitated, and stable rotation without play can be achieved after entry.

[0040] A screw thread (not shown) may be formed on the fastening portion (24). The screw thread may be formed at a certain height on the circumferential surface of the fastening portion (24) and may be configured in the form of a single screw thread or a double screw thread. Specifically, the fastening portion (24) may be composed of a screw section (240) in which the screw thread is formed at a certain height on the circumferential surface from the bottom, and a non-screw section (242) in which no screw thread is formed, which is disposed between the screw section (240) and the joint portion (23).

[0041] The gum removal portion (26) may include a tapered portion (27) and a head portion (28). The tapered portion (27) is a portion connected to the upper end of the insertion portion (20) that is not inserted into the implant body (1), and the head portion (28) may be formed on the upper end of this tapered portion (27). At this time, cutting blades (29) for removing alveolar bone remaining around the implant body (1) may be formed on the periphery of the head portion (28).

[0042] The head portion (28) may preferably be composed of a cylindrical bulge portion (280) formed with the largest diameter among the components constituting the healing abutment (2) according to the first embodiment, and a tapered neck portion (284) whose diameter decreases as it goes downward to naturally connect the bulge portion (280) and the tapered portion (27). At this time, the cutting edge (29) may be formed in the neck portion (284) over a part of the bulge portion (280).

[0043] The bulge (280) may be composed of an arched convex surface (281) with an upwardly convex upper surface. A tool coupling groove (282) may be formed in the center of the arched convex surface (281). The tool coupling groove (282) may be configured in a hexagonal groove with a planar shape that is hexagonal as illustrated in the drawing, a cross shape, a groove with a planar shape that is a regular polygon of at least a triangle, or a groove with a planar shape that is a regular polygon of at least a triangle. In some cases, it may be configured in a Torx shape.

[0044] In attaching the healing abutment (2) to the implant body (1), a tool such as a screwdriver can be attached to the tool coupling groove (282) and rotational torque can be applied to the healing abutment through the tool. Through this, the healing abutment (2) can be attached to the implant body (1) that has already been implanted in the alveolar bone, or separated and removed from the implant body (1) after a certain period of time.

[0045] A plurality of cutting blades (29) may be formed at regular intervals along the circumference of the gum removal portion (26). Each cutting blade (29) may be formed in a straight line in a direction corresponding to the centerline (CL), as shown in the example of FIG. 4, extending from the neck portion (284) of the head portion (28) to a part of the swelling portion (280). At this time, the number and spacing of the cutting blades (29) may vary depending on the size or shape of the implant body (1), so they are not limited to a specific number or spacing.

[0046] A healing abutment is used as a component attached to the implant body while the gums stabilize after implantation. When attaching the healing abutment to the implant body, it is necessary to additionally remove alveolar bone or gum tissue surrounding the implant body. This is because the surrounding alveolar bone or gum tissue may encroach upon the attachment area of ​​the healing abutment.

[0047] Situations where the alveolar bone or gums surrounding the implant body encroach upon the attachment area of ​​the healing abutment are prone to occur in indications where the implant body must be implanted deeply depending on the condition of the alveolar bone. In such cases, conventionally, it was necessary to remove the remaining alveolar bone or gums using a separate surgical instrument called a 'Bone Profiler.' Consequently, this entailed inconvenience and inevitably prolonged the procedure time.

[0048] In the process of attaching the healing abutment (2) according to an embodiment of the present invention to the implant body (1) implanted in the alveolar bone, the remaining alveolar bone or gum tissue around the implant body (1) can be removed or destroyed. This is because the surface of the healing abutment (2) is integrally equipped with a cutting blade (29) capable of removing or destroying the remaining alveolar bone or gum tissue around the implant body (1).

[0049] As such, the healing abutment (2) according to the embodiment of the present invention can simultaneously remove or eliminate surrounding remaining alveolar bone or gums when fastened to the implant body (1) implanted in the alveolar bone by means of an integrally provided cutting blade (29). Accordingly, the use of a separate surgical instrument such as a 'bone profiler instrument' can be eliminated, and the problem of incomplete fastening of the healing abutment due to remaining alveolar bone can also be resolved.

[0050] FIGS. 7A and 7B are drawings illustrating the process of attaching a healing abutment to an implant body according to a first embodiment of the present invention.

[0051] Referring to these drawings, when performing an implant procedure, the gum of the target area is first incised, and a hole is formed by drilling into the alveolar bone (B, bone at the gum incision site) exposed by the incision of the gum, and then an implant body (1) is implanted therein as shown in FIG. 7a. Then, a healing abutment (2) according to the first embodiment of the present invention is attached to the implant body (1) as shown in FIG. 7b.

[0052] For reference, when attaching the healing abutment to the implanted implant body (1), the healing abutment may be attached immediately after the implant body (1) is implanted without using a cover screw to stabilize the gum, or after the implanted implant body (1) is implanted, a cover screw may be attached to the implanted implant body (1) and sutured, and then the gum may be re-incised after a certain period of time to attach the healing abutment.

[0053] A connection with the implant body (1) can be achieved by applying rotational torque to the healing abutment through the tool while the tool, such as a screwdriver, is coupled to the tool coupling groove (282) of the healing abutment according to the first embodiment of the present invention. In this process, alveolar bone or gums remaining around the implant body (1) can be removed by the cutting blades (29) formed in a plurality along the circumference of the healing abutment.

[0054] In FIG. 7b, the area indicated by the guide line 'A' is the area where the alveolar bone is removed or cut by the cutting blade (29) during the process of attaching the healing abutment (2) to the implant body (1).

[0055] As such, the present invention enables the simultaneous removal or elimination of surrounding remaining alveolar bone or gums when attached to an implant body implanted in the alveolar bone by means of an integrally provided cutting blade. Consequently, the use of a separate surgical instrument, such as a 'bone profiler instrument,' can be eliminated, and as the use of such an instrument is eliminated, inconvenience is reduced and the surgical time can be significantly shortened.

[0056] FIG. 8 is an enlarged view of the main part of a healing abutment according to a second embodiment of the present invention. The healing abutment (3) according to the second embodiment of the present invention is identical to the first embodiment except that the direction of formation of the cutting edge (39) is different from that of the healing abutment according to the first embodiment described above. Therefore, redundant descriptions of identical components will be omitted.

[0057] As illustrated in FIG. 8, the cutting edge (39) applied to the healing abutment (3) according to the second embodiment of the present invention is formed along the circumferential surface of the gum removal portion (36), and can be formed in a shape inclined to one side on the circumferential surface, more specifically, in a diagonal shape inclined at a predetermined angle (θ) with respect to the height direction centerline (CL) of the healing abutment.

[0058] At this time, the inclined direction (tilted direction) of the cutting blades (39) formed in a diagonal shape may be the same as the formation direction of the screw threads included in the aforementioned fastening part (24).

[0059] If the inclined direction of the cutting blade (39) is configured to be the same as the direction of the screw thread, during the process of rotating the healing abutment to fasten it to the implant body, the gum or remaining bone that is removed or cut by the cutting blades can be pushed upward and easily discharged outside the gum while flowing spirally along the groove formed between the rotating cutting blades, thereby greatly reducing side effects caused by the internal retention of the cut skin tissue and bone.

[0060] The above detailed description of the present invention describes only specific embodiments thereof. However, it should be understood that the present invention is not limited to the specific forms mentioned in the detailed description, but rather should be understood to include all variations, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Explanation of the symbols

[0061] 1 : Implant body 2, 3: Healing Abutment 20 : Insert part 22 : Contact part 23 : Joint 24 : Fastening part 26 : Gum removal section 27 : Tapered section 28 : Head section 29 : Cutting edge 220 : First contact part 222 : Second contact part 240 : Screw section 242 : Non-screw section 280 : Ampulla 281 : Convex surface 282 : Tool coupling groove 284 : Wood

Claims

Claim 1 A healing abutment for a dental implant that is fastened to an implant body implanted in the alveolar bone to restore the gums before placing an artificial tooth prosthesis, comprising: an insertion portion inserted into the implant body; a gum removal portion formed on the upper part of the insertion portion; and cutting blades formed on the gum removal portion for removing alveolar bone remaining around the implant body. Claim 2 A healing abutment for a dental implant according to claim 1, wherein the insertion part comprises a tapered contact part that makes surface contact with the tapered inner surface of the implant body, a fastening part formed with a diameter smaller than the lowest diameter of the contact part and having a screw thread formed at a certain height that screw-couples with the inner surface of the implant body, and a joint part that connects the contact part and the fastening part and has a circumferential surface formed in a concave curved shape. Claim 3 A healing abutment for a dental implant according to claim 2, characterized in that the contact portion comprises a first contact portion connected to the lower end of the gum removal portion and having a diameter that decreases as it goes downward, and a second contact portion connected to the lower end of the first contact portion and having a diameter that decreases more significantly as it goes downward compared to the first contact portion. Claim 4 A healing abutment for a dental implant according to claim 2, wherein the connecting portion comprises a threaded section having the threads formed over a certain height around the circumference and a non-threaded section disposed between the threaded section and the joint portion and having no threads formed therein. Claim 5 A healing abutment for a dental implant according to claim 1, wherein the gum removal portion is composed of a tapered portion connected to the upper end of the insertion portion and not inserted into the implant body, and a head portion at the upper end of the tapered portion, and the cutting edges are formed on the circumferential surface of the head portion. Claim 6 A healing abutment for a dental implant according to claim 5, wherein the head portion comprises a cylindrical bulge portion and a tapered neck portion between the bulge portion and the tapered portion, and a cutting edge is formed extending from the neck portion to a part of the bulge portion. Claim 7 A healing abutment for a dental implant according to claim 6, characterized in that the upper surface of the bulge is formed as an upwardly convex arched convex surface, and a tool coupling groove is formed in the center of the arched convex surface. Claim 8 A healing abutment for a dental implant according to claim 1, characterized in that the cutting blades are formed perpendicularly to the periphery of the gum removal portion. Claim 9 A healing abutment for a dental implant according to claim 1, characterized in that the cutting blades are formed diagonally on the periphery of the gum removal portion. Claim 10 A healing abutment for a dental implant according to claim 9, characterized in that the inclined direction of the cutting edges formed diagonally is the same as the direction of the screw thread included in the insert.

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