Abutment for implant having coupling part with surface pattern for improving adhesion with upper prosthesis

Abstract

The present invention relates to an abutment for an implant having a coupling part with a surface pattern for improving adhesion with an upper prosthesis. To this end, the present invention relates to an abutment (100) for an implant having a coupling part with a surface pattern for improving adhesion with an upper prosthesis and provides an abutment for an implant having a coupling part with a surface pattern for improving adhesion with an upper prosthesis, the abutment comprising a surface pattern coupling part (110) in which a plurality of laser-etched surfaces having the same insertion angle are formed at regular intervals on the upper outer circumferential surface of the abutment to strengthen the coupling force between the abutment and resin cement. According to the present invention configured as described above, the surface pattern part for increasing the coupling force with the upper prosthesis is formed on the abutment, so that the convenience of coupling with the prosthesis and the use stability of the implant after treatment can be improved, thereby greatly improving the quality and reliability of the abutment product for an implant having a coupling part with a surface pattern, satisfying various needs of consumers as users, and presenting a good image.

Description

Implant abutment with a surface patterned connection portion to enhance adhesion with the superstructure

[0001] An embodiment of the present invention relates to an implant abutment having a surface patterned connection portion for improving adhesion to an upper prosthesis. More specifically, the abutment is formed with a surface patterned portion that increases the bonding strength with the upper prosthesis, thereby improving the convenience of bonding with the prosthesis and the stability of the implant's use after treatment. Consequently, the quality and reliability of the implant abutment product with the surface patterned connection portion are significantly enhanced, thereby satisfying the diverse needs of consumers and creating a positive image.

[0002] Unless otherwise indicated in this specification, the contents described in this identification item are not prior art for the claims of this application, and are not recognized as prior art simply because they are described in this identification item.

[0003] As is well known, a dental implant refers to a replacement for a lost natural tooth itself, or a dental procedure that restores the original function of a tooth by fastening a screw-shaped artificial tooth fixture, called a fixture, to the alveolar bone to allow it to fuse with the bone for a certain period, and then fixing a prosthetic device, such as an abutment and a crown, onto it. (Fig. 1)

[0004] The aforementioned abutment must satisfy various requirements due to fundamental limitations and various factors in the surgical procedure, such as patient needs, aesthetics, intermaxillary distance, alveolar bone morphology, bone volume and quality, degree of alveolar bone resorption, the difference in diameter between natural teeth and implants, and the structural difference between natural teeth and peri-implant tissues.

[0005] In particular, the abutment is fixed to the upper part of the implant fixture and serves to connect the upper prosthesis with the fixture. Therefore, the bonding stability between the implant abutment and the upper prosthesis, and between the abutment and the implant fixture, is an important factor in prosthetic treatment.

[0006] Furthermore, during oral mastication, vertical shear force, rotational force applied from the side, lateral and anterior forces, tensile force, and shear stress continuously act on the adhesive interface between the abutment and the prosthesis. These loads affect the stability of the joint, and if the bonding strength is insufficient, the prosthesis may detach from the abutment. Since this can negatively impact the overall implant and prosthetic treatment plan and impede the effectiveness of the treatment, the bonding strength between the abutment and the superstructure must be reinforced to withstand various loads within the oral cavity.

[0007] Conventionally, various surface treatment technologies have been developed to strengthen the surface bonding strength of the abutment. Specifically, conventional abutment surface treatment methods include plasma treatment, sandblasting, and acid etching. Each method utilizes various mechanical and chemical bonding methods to increase the bonding strength between the implant and the superstructure and to enhance functional stability.

[0008] The aforementioned plasma treatment is a method that increases adhesion by enhancing surface hydrophilicity and strengthening the oxide film. However, plasma treatment alone may have limitations in maintaining long-term bonding strength. In particular, an aging effect may occur over time, in which surface hydrophilicity decreases; this lowers the initial bonding strength and may fail to sufficiently guarantee the stability of the bond between the prosthesis and the abutment. Furthermore, plasma treatment requires complex equipment and high costs, making it difficult to use in clinical practice.

[0009] Furthermore, the aforementioned sandblasting is effective in enhancing physical fixation by roughening the titanium surface to strengthen mechanical bonding. However, because this method involves spraying fine particles onto the surface, uneven surface roughness and microcracks may occur, and such surface non-uniformity poses a risk of reducing the consistency of bonding strength. Additionally, sandblasting carries the risk of leaving residue on the surface, which may reduce adhesion and stability.

[0010] In order to solve the aforementioned problems, the following prior art documents were developed in the past; however, a major problem still arose in that the problems of the aforementioned prior art could not be solved all at once.

[0011] [Prior Art Literature]

[0012] (Patent Document 1) Korean Registered Patent Publication No. 2639266 (February 16, 2024) has been registered.

[0013] (Patent Document 2) Korean Registered Patent Publication No. 2560659 (July 24, 2023) has been registered.

[0014] (Patent Document 3) Korean Published Patent Application No. 2023-0103944 (July 7, 2023) has been disclosed.

[0015] (Patent Document 4) Korean Published Patent Application No. 2023-0103931 (July 7, 2023) has been disclosed.

[0016] The present invention has been devised to resolve the various problems of the prior art as described above. Its first objective is to provide the abutment with a surface pattern bonding portion, a first bonding portion, a second bonding portion, and a deposition portion / spatter. The second objective of the present invention, based on the technical configuration described above, is to form a surface pattern portion on the abutment that increases the bonding strength with the upper prosthesis, thereby improving the convenience of bonding with the prosthesis and the stability of the implant's use after treatment. The third objective is to strengthen the adhesion between the abutment surface pattern portion and the resin cement during the step of fixing the upper prosthesis and the abutment, so that it can play an important role in resolving difficulties during treatment by applying it to clinical cases where the surface area of ​​the upper prosthesis and the abutment is small. The fourth objective is to ensure that the surface pattern portion maintains long-term bonding strength even when exposed to various environments within the oral cavity. The fifth objective is to provide uniform surface pattern portion characteristics to guarantee stable bonding between the abutment and the upper prosthesis. The sixth objective is to increase the success rate of implant treatment and, regarding oral stress... The seventh objective is to enable the implementation of a reliable bonding structure with high resistance to [unclear], and the seventh objective is to strengthen the bonding force between the abutment and the superposition so that it can withstand various loads in the oral cavity. The eighth objective is to increase the physical fixation force between the abutment and the superposition through the surface pattern to consistently maintain bonding strength even after a long period of time. The ninth objective is to provide an implant abutment with a surface patterned bonding portion for improved adhesion to the superposition, which significantly improves the quality and reliability of the implant abutment product with the bonding portion treated with a surface pattern, thereby satisfying the diverse needs of consumers and creating a positive image.

[0017] To achieve this objective, the present invention relates to an implant abutment having a surface patterned bonding portion for improving adhesion to an upper prosthesis, characterized in that the upper outer surface of the abutment includes a plurality of laser-etched surfaces formed at regular intervals with matching insertion angles to strengthen the bonding strength between the implant abutment and the resin cement.

[0018] As described in detail above, the present invention forms a surface pattern portion on the abutment that increases the bonding strength with the upper prosthesis, thereby improving the convenience of bonding with the prosthesis and the stability of use of the implant after treatment.

[0019] Furthermore, the present invention strengthens the adhesion between the abutment surface pattern portion and the resin cement during the step of fixing the upper prosthesis and the abutment, thereby enabling it to play an important role in resolving difficulties during treatment by applying it to clinical cases where the surface area of ​​the upper prosthesis and the abutment is small.

[0020] Furthermore, the present invention ensures that the surface pattern portion maintains long-term bonding strength even when exposed to various environments within the oral cavity.

[0021] In addition, the present invention provides uniform surface pattern characteristics to ensure a stable connection between the abutment and the upper prosthesis.

[0022] In particular, the present invention enables an increase in the success rate of implant treatment and the realization of a reliable bonding structure with high resistance to intraoral stress.

[0023] In addition, the present invention strengthens the bonding force between the abutment and the upper prosthesis so that it can withstand various loads within the oral cavity.

[0024] In addition, the present invention enhances the physical fixation force between the abutment and the upper prosthesis through the surface pattern portion, thereby enabling consistent maintenance of the bonding force even after a long period of time.

[0025] The present invention is a very useful invention that, due to the aforementioned effects, significantly improves the quality and reliability of implant abutment products in which the joint portion is treated with a surface pattern, thereby satisfying the diverse needs of consumers and creating a positive image.

[0026] Hereinafter, a preferred embodiment of the present invention for achieving these effects will be described in detail with reference to the attached drawings.

[0027] Figure 1 is a diagram of a general dental implant.

[0028] FIG. 2 shows a bonding part for improving adhesion with an upper prosthesis applied in the present invention.

[0029] Product photo of the first embodiment of an implant abutment with a surface pattern processing.

[0030] FIG. 3 shows a bonding part for improving adhesion with an upper prosthesis applied in the present invention.

[0031] Product photo of the second embodiment of an implant abutment with a surface pattern processing.

[0032] FIG. 4 shows a bonding part for improving adhesion with an upper prosthesis applied in the present invention.

[0033] Enlarged plan view of an implant abutment with a surface patterned section.

[0034] FIG. 5 shows a bonding part for improving adhesion with an upper prosthesis applied in the present invention.

[0035] Enlarged cross-sectional view of an implant abutment with a surface patterned section.

[0036] FIG. 6 shows a bonding part for improving adhesion with an upper prosthesis applied in the present invention.

[0037] Enlarged plan view of the key part of an implant abutment with a surface pattern processing.

[0038] FIG. 7 is an enlarged plan view of a key part of the deposition portion or spatter applied in the present invention.

[0039] do.

[0040] FIG. 8 is a white light interferometer 3D image of the surface pattern portion applied to the present invention.

[0041] FIG. 9 shows the key parts of the white light interferometer 3D image of the surface pattern portion applied to the present invention.

[0042] jin.

[0043] FIG. 10 is a graph comparing the shear adhesive strength of abutments of the present invention and the prior art.

[0044] <Explanation of symbols for major parts of the drawing>

[0045] 100: Abutment

[0046] 110: Surface pattern joint

[0047] 111: First connecting part

[0048] 112: Second connecting part

[0049] 113: Deposition area / Spatter

[0050] The abutment for an implant, which has a surface patterned joint for improving adhesion with an upper prosthesis applied in the present invention, is configured as shown in FIGS. 2 to 10.

[0051] In the following description of the present invention, if it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the essence of the present invention, such detailed description will be omitted.

[0052] Furthermore, the terms described below are established considering their functions in the present invention, and since these may vary depending on the producer's intent or practice, their definitions should be based on the content throughout this specification.

[0053] In addition, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is shown in the drawings.

[0054] First, the present invention relates to an implant abutment (100) having a surface patterned bonding portion for improving adhesion with an upper prosthesis, and is configured as follows.

[0055] That is, the present invention provides an implant abutment with a surface pattern processing for improving adhesion to an upper prosthesis, characterized in that a plurality of laser-etched surfaces with matching insertion angles are formed at regular intervals on the upper outer surface of the abutment to strengthen the bonding strength between the implant abutment and the resin cement.

[0056] At this time, it is preferable that the material of the abutment (100) be made of metal or ceramic material.

[0057] In addition, the equipment for laser etching the above implant abutment can use any one selected from CO2, Fiber, UV, femtosecond, and nanosecond lasers with an output of 3W to 200W.

[0058] And the inlet angle of the laser etching can form an intersection angle ranging from 1 degree to 180 degrees depending on the number of etched surfaces.

[0059] That is, the angle of the laser introduced into the adhesive surface of the abutment (100) can form a different introduction angle for each pattern, and the abutment (100) can be configured to rotate to form an initial introduction angle and an intersection angle. If the introduction angle of the etching is less than 1 degree, the introduction angle of all patterns is formed equally, making it difficult to etch the entire area (since the surface forming the intersection angle cannot be etched), and since the intersection angle increases from 1 degree to 180 degrees at the point where the intersection angle is formed and cannot be formed beyond 180 degrees, it is preferable to form an intersection angle within the range of 1 degree to 180 degrees.

[0060] In addition, it is preferable to form the gap of the laser etching as 0.01 to 1 mm.

[0061] That is, if the laser etching interval is 0.01 mm or less, the depth of the etching is limited, so the bonding strength may be reduced and the bonding part formed on the surface may easily detach, making it difficult to maintain stable bonding strength. Also, if it is formed with a interval of 1 mm or more, the total area of ​​the etching is reduced, so the bonding strength may be reduced. Therefore, it is preferable to form the laser etching interval as 0.01 to 1 mm.

[0062] In particular, it is preferable that the surface area of ​​the surface pattern bonding part (110) be formed to be 10% or more and 80% or less of the total bonding area.

[0063] That is, if the bonding area is 10% or less, the bonding strength does not increase significantly, so the effect of the surface treatment may decrease, and if the surface area of ​​the bonding part is formed to be 80% or more, the stability of the adhesive surface may decrease due to excessive etching, or the time and difficulty of the etching process may increase more than necessary, so it is preferable that the surface area of ​​the surface pattern bonding part (110) be formed to be 10% or more and 80% or less of the total bonding area.

[0064] Meanwhile, the surface pattern bonding part (110) applied to the present invention is configured as follows.

[0065] That is, the present invention is provided with a first coupling part (111) having a grid-shaped coupling pattern part at a certain depth interval.

[0066] In addition, the present invention is provided with a second coupling part (112) formed in an internal groove between the reference surfaces of each first coupling part (111).

[0067] And the present invention is provided with a deposition part or spatter (113) formed by laser etching by the first coupling part (111) and the second coupling part (112).

[0068] In addition, it is preferable that the depth of the laser etching applied in the present invention be 0.05mm to 0.5mm.

[0069] At this time, if the depth of the laser etching is 0.05 mm or less, the surface area and roughness to which the resin cement can bond are insufficient, so the bonding strength may not increase significantly, and if the depth of the laser etching is 0.5 mm or more, it may affect the mechanical properties of the abutment, so it is preferable that the depth of the laser etching be a surface treatment within the range of 0.05 mm to 0.5 mm.

[0070] In addition, in the present invention, it is preferable that the irregularities or protrusions formed by the deposition part or spatter (113) are formed to be 7 μm or more.

[0071] At this time, since the bonding strength may be reduced if the irregularities or protrusions formed by the deposition part or spatter (113) are formed to be less than 7㎛, it is preferable that the irregularities or protrusions formed by the deposition part or spatter (113) be formed to be 5㎛ or more.

[0072] Finally, it is preferable that the present invention improves bonding strength by sandblasting the laser-etched surface.

[0073] Meanwhile, the present invention can be modified in various ways and can take various forms when applying the above-mentioned components.

[0074] And it should be understood that the present invention is not limited to the specific form mentioned in the above 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.

[0075] The functional effects of the implant abutment, which has a surface patterned bonding portion for improving adhesion to the upper prosthesis of the present invention configured as described above, are as follows.

[0076] First, the present invention forms a surface pattern portion on the abutment that increases the bonding strength with the upper prosthesis, thereby improving the convenience of bonding with the prosthesis and the stability of the implant's use after treatment.

[0077] Figure 2, applied to the present invention for this purpose, is a product photograph of a first embodiment of an implant abutment (100) in which a bonding portion for improving adhesion with an upper prosthesis is treated with a surface pattern portion, showing that a surface pattern portion (110) is provided on the surface of the upper square column of the abutment.

[0078] In addition, FIG. 3 is a product photograph of a second embodiment of an implant abutment (100) in which a bonding portion for improving adhesion with an upper prosthesis applied in the present invention is treated with a surface pattern portion, showing that a surface pattern portion (110) is provided on the upper elliptical-shaped surface of the abutment.

[0079] Figure 4 is an enlarged plan view of an implant abutment (100) with a surface patterned bonding portion for improving adhesion with an upper prosthesis applied in the present invention, showing an image magnified 100 times using a scanning electron microscope (SEM).

[0080] In addition, FIG. 5 is an enlarged cross-sectional view of an implant abutment (100) with a surface patterned bonding portion for improving adhesion with an upper prosthesis applied in the present invention, showing an image magnified 150 times using a scanning electron microscope (SEM).

[0081] The laser etching intervals of Figures 4 and 5 above are 0.2 mm, and the depth is 0.17 mm. The cross-sectional shape of the adhesive part is shown.

[0082] FIG. 6 is an enlarged plan view of a key part of an implant abutment (100) that has a surface patterned bonding part for improving adhesion with an upper prosthesis applied in the present invention, showing an image of a deposition part or spatter (113) formed by laser etching protruding from the first bonding part (111) and the second bonding part (112) magnified 500 times using a scanning electron microscope (SEM).

[0083] Also, FIG. 7 is an enlarged plan view of a portion of the deposition part or spatter (113) applied to the present invention, showing that a protrusion of 7 μm or more is formed.

[0084] And Fig. 8 shows a white light interferometer 3D image of the surface pattern portion (110) applied to the present invention.

[0085] In addition, FIG. 9 is a photograph of a key part of a white light interferometer 3D image of a surface pattern part (110) applied to the present invention, showing a scanning electron microscope (SEM) image magnified 500 times of a deposition part or spatter (113) formed by laser etching by a first coupling part (111) and a second coupling part (112).

[0086] Finally, Figure 10 shows a graph comparing the shear adhesive strength of abutments of the present invention and the prior art.

[0087] The results of the shear bonding strength experiments in Figure 10 (comparison graph of abutment shear bonding strength) and Table 1 below are explained as follows.

[0088]

[0089] * Sample 1 (Name of the sample of the present invention)

[0090] Titanium abutment (laser surface treated) + zirconia superstructure bonding

[0091] Cement : Ivoclar Variolink N(no pretreatment)

[0092] * Sample 2 (Name of conventional technology sample)

[0093] Titanium abutment (base surface) + zirconia superstructure bonding

[0094] Cement : Ivoclar Variolink N(no pretreatment)

[0095]

[0096] As described above, when 10 samples of the present invention (Sample 1) were tested, the average tensile stress was 47.3, and when 10 samples of the conventional method (Sample 2) were tested, the average tensile stress was 7.4. This confirmed that the elastic modulus and tensile stress per millimeter area of ​​the present invention were improved compared to the conventional method.

[0097] As a result, the present invention strengthens the adhesion between the abutment surface pattern portion and the resin cement during the step of fixing the upper prosthesis and the abutment, thereby enabling it to play an important role in solving difficulties during treatment by applying it to clinical cases where the surface area of ​​the upper prosthesis and the abutment is small, and provides uniform surface pattern portion characteristics to ensure a stable bond between the abutment and the upper prosthesis.

[0098] As described above, the present invention improves the convenience of bonding with the prosthesis and the stability of implant use after treatment by forming a surface pattern portion on the abutment that increases the bonding strength with the superposition prosthesis. Furthermore, by strengthening the adhesion between the abutment surface pattern portion and the resin cement during the step of fixing the superposition prosthesis and the abutment, it plays a significant role in resolving difficulties during treatment by applying it to clinical cases where the surface area of ​​the superposition prosthesis and the abutment is small. Additionally, the surface pattern portion maintains long-term bonding strength even when exposed to various oral environments, and provides uniform surface pattern characteristics to ensure stable bonding between the abutment and the superposition prosthesis. Through this, the invention increases the success rate of implant treatment and enables the realization of a reliable bonding structure with high resistance to oral stress. It also strengthens the bonding strength between the abutment and the superposition prosthesis to withstand various loads in the oral cavity, and provides the effect of maintaining consistent bonding strength by increasing the physical fixation strength between the abutment and the superposition prosthesis through the surface pattern portion even after a long period of time.

[0099] The technical concept of the implant abutment, in which the bonding portion for improving adhesion to the upper prosthesis of the present invention is treated with a surface pattern, allows for the repeated implementation of identical results in practice. In particular, since implementing such an invention can promote technological advancement and contribute to industrial development, it is fully worthy of protection.

Claims

1. The invention relates to an implant abutment (100) having a surface patterned joint portion for improving adhesion with an upper prosthesis, An implant abutment with a surface pattern processing for improving adhesion to an upper prosthesis, characterized by including a surface pattern bonding portion (110) formed at regular intervals on the upper outer surface of the abutment, wherein the bonding portion for improving adhesion to an upper prosthesis is a bonding portion.

2. In Claim 1, The above surface pattern bonding part (110) is, A first joint part (111) having a grid-shaped joint pattern part with a depth at regular intervals; A second coupling part (112) formed in an internal groove between the reference surfaces of each first coupling part (111); and An implant abutment with a surface patterned bonding portion for improving adhesion to an upper prosthesis, characterized by including a deposition portion or spatter (113) formed protruding by laser etching through a first bonding portion (111) and a second bonding portion (112).

3. In claim 1 or 2, The depth of the above laser etching is, An implant abutment characterized by a surface patterned joint portion for improving adhesion with an upper prosthesis, formed with a thickness of 0.05mm to 0.5mm.

4. In Claim 2, An implant abutment with a surface patterned bonding portion for improving adhesion to an upper prosthesis, characterized in that irregularities or protrusions formed by the above deposition portion or spatter (113) are formed at least 7 μm.

5. In claim 1 or 2, An implant abutment having a surface patterned bonding portion for improving adhesion to an upper prosthesis, characterized by sandblasting the laser-etched surface to improve bonding strength.

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