Removable soft tissue level implant and dental implant system having the same

Abstract

The present invention provides a detachable soft tissue-level implant and a dental implant system having the same. The detachable soft tissue-level implant includes an implant body and a gingiva-penetrating collar. The implant body includes a bone-penetrating portion buried in the alveolar bone. A gingiva-penetrating portion extending proximally is provided on the proximal end face of the bone-penetrating portion, and the gingiva-penetrating portion is buried in the gingival soft tissue. The gingiva-penetrating collar is a hollow structure and is detachably sleeved at a fixed position on the outer wall of the gingiva-penetrating portion. By designing the soft tissue-level implant as a split structure of a detachable implant body and a gingiva-penetrating collar, the problem of inconvenient clearance of inflammation around the implant in clinical practice is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of dental implant technology, and particularly relates to a detachable soft tissue level implant and a dental implant system having the same. Background Art

[0002] During the dental implant surgery, dental implants are required. Dental implants are generally divided into soft tissue level implants and bone level implants. The bone level implant is completely buried under the alveolar bone. The lower part of the soft tissue level implant is buried under the alveolar bone, and the upper part is buried in the gingival soft tissue. Compared with the bone level implant, the soft tissue level implant can complete the implantation through a single-stage surgery, which simplifies the operation and reduces the complexity of treatment. It can not only achieve bone maintenance, but also protect the health around the implant.

[0003] In the prior art, the gingival soft tissue level implant is usually an integral structure. However, once inflammation is found around the integral structure implant, it is necessary to turn over the gingival soft tissue and deeply scrape the inside of the gingival soft tissue mechanically. The operation is inconvenient, and if the scraping is not clean, the inflammation will recur, which may seriously lead to implant failure and implant shedding. Summary of the Invention

[0004] The purpose of the present invention is to provide a detachable soft tissue level implant and a dental implant system having the same, so as to solve the problem of inconvenient clearance of inflammation around the implant in clinical practice.

[0005] The present invention provides a detachable soft tissue level implant, which includes an implant body and a gingival sleeve; the implant body includes a bone-penetrating part, and a gingival-penetrating part extending proximally is provided on the proximal end face of the bone-penetrating part; the gingival sleeve is a hollow structure and is detachably sleeved at a fixed position on the outer wall of the gingival-penetrating part.

[0006] As a further improvement of the present invention, the cross-sectional profile of the gingival-penetrating part is an anti-rotation structure in the shape of a polygon or a key tooth, and the cross-sectional profile shape of the inner wall surface of the gingival sleeve corresponds to the cross-sectional profile shape of the gingival-penetrating part.

[0007] As a further improvement of the present invention, the gingival-penetrating part is a columnar structure, which indents inward relative to the bone-penetrating part, and an indentation platform is formed between the gingival-penetrating part and the bone-penetrating part, and the gingival sleeve abuts against the indentation platform.

[0008] As a further improvement of the present invention, the gingival-penetrating part is a frustum structure with a conical angle upward, and the hollow structure of the gingival sleeve cooperates with the gingival-penetrating part and abuts against the outer wall of the gingival-penetrating part.

[0009] As a further improvement of the present invention, the gingival sleeve includes a main body part and a connecting part provided on the proximal end face of the main body part, and the connecting part is connected to the implant body or the dental crown.

[0010] As a further improvement of the present invention, the cross-sectional profile of the main body portion is circular, and from the distal end face to the proximal end face of the main body portion, the outer diameter of the cross-sectional profile remains unchanged or increases smoothly.

[0011] As a further improvement of the present invention, the material of the gingiva-penetrating collar is a biomedical metal or a polymer material, and the surface roughness of the gingiva-penetrating collar is less than or equal to Ra0.4μm.

[0012] As a further improvement of the present invention, the surface of the gingiva-penetrating collar is coated with a coating, the material of the coating is a biomedical metal or a polymer material, and the surface roughness of the coating is less than or equal to Ra0.4μm.

[0013] As a further improvement of the present invention, the biomedical metal or polymer material is zirconia, or titanium, or titanium alloy, or polyetheretherketone, or polymethyl methacrylate or a related composite material of the above materials.

[0014] As a further improvement of the present invention, the bone-penetrating portion and the gingiva-penetrating portion are integrally formed structures, the outer wall surface of the bone-penetrating portion is provided with threads, and the interior of the bone-penetrating portion and the gingiva-penetrating portion is provided with a cavity structure fixedly matched with the dental implant abutment.

[0015] To achieve the above-mentioned invention purpose, the present invention also provides a dental implant system, and the dental implant system includes the detachable soft tissue level implant as described above.

[0016] The beneficial effects of the present invention are as follows: By designing the soft tissue level implant as a split structure of a detachable implant matrix and a gingiva-penetrating collar, the problem of inconvenient removal of inflammation around the implant in clinical practice is solved. If inflammation is found, on the one hand, after removing the dental implant abutment, only the gingiva-penetrating collar covered with bacterial film in the gingival soft tissue needs to be pulled out, and there is no need for flap treatment, and the space originally occupied by the original gingiva-penetrating collar can be curetted; on the other hand, there is no need to clean the implant matrix, and a clean gingiva-penetrating collar can be directly replaced onto the implant matrix, saving the cumbersome cleaning procedure and reducing the probability of recurrent inflammation. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the soft tissue level implant in the first embodiment of the present invention.

[0018] Figure 2 is the cross-sectional view of the implant matrix at Figure 1 at A-A in

[0019] Figure 3 is Figure 1 the cross-sectional view at B-B in

[0020] Figure 4 It is a schematic diagram of the soft tissue level implant in the second embodiment of the present invention.

[0021] Figure 5 It is in the gingiva-penetrating collar Figure 1 The cross-sectional view at A-A.

[0022] Figure 6 It is a schematic diagram of the gingiva-penetrating collar in the third embodiment of the present invention.

[0023] Figure 7 It is a schematic diagram of the gingiva-penetrating collar in the fourth embodiment of the present invention.

[0024] Figure 8 It is a schematic diagram of the gingiva-penetrating collar in the fifth embodiment of the present invention. Detailed Embodiment

[0025] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be clearly and completely described below in conjunction with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0026] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0027] To clearly express the positions and directions described in the present application, taking the instrument operator as a reference, the end close to the operator is the proximal end, and the end far from the operator is the distal end.

[0028] As Figure 1 shown, an embodiment of the present invention provides a detachable soft tissue level implant, and the detachable soft tissue level implant includes an implant body 1 and a gingiva-penetrating collar 2.

[0029] The implant body 1 includes a bone-penetrating part 11 buried in the alveolar bone. A gingiva-penetrating part 12 extending proximally is provided on the proximal end face of the bone-penetrating part 11, and the gingiva-penetrating part 12 is buried in the gingival soft tissue. The gingiva-penetrating collar 2 is of a hollow structure and is detachably sleeved on the outer wall of the gingiva-penetrating part 12 at a fixed position.

[0030] Thus, by designing the soft tissue-level implant as a split structure of the detachable implant base body 1 and the gingival collar 2, in case of inflammation, on the one hand, after removing the dental implant abutment, only the gingival collar 2 covered with biofilm in the gingival soft tissue needs to be pulled out, and there is no need for flap surgery, so that the space occupied by the original gingival collar 2 can be curetted; on the other hand, there is no need to clean the implant base body 1, and a clean gingival collar 2 can be directly replaced onto the implant base body 1, saving the cumbersome cleaning procedure and reducing the probability of recurrent inflammation.

[0031] The outer wall surface of the bone-penetrating part 11 is provided with a thread structure 13. In different embodiments, the thread specifications can be adjusted according to implants of different model sizes to firmly connect the implant base body 1 to the alveolar bone and increase the contact area.

[0032] Further, as Figure 2 and Figure 3 shown, the bone-penetrating part 11 and the gingiva-penetrating part 12 are internally provided with a cavity structure 14 that cooperates with the dental implant abutment. The dental implant abutment (not shown in the figure) is a conventional abutment used in the field of stomatology. The distal end of the dental implant abutment is sequentially provided with connection structures such as a frustum part, an anti-rotation part, and a thread part at the joint with the cavity structure 14. The specific structure will not be elaborated here. The cavity structure 14 is tightly connected to the connection structure, thereby fixedly assembling the dental implant abutment and the implant base body 1.

[0033] Preferably, in this embodiment, the bone-penetrating part 11 and the gingiva-penetrating part 12 are integrally formed structures, so as to ensure the strength of the implant base body 1 and have a longer service life.

[0034] Of course, the connection method between the bone-penetrating part 11 and the gingiva-penetrating part 12 is not limited to this. In some other embodiments of the present invention, the bone-penetrating part 11 and the gingiva-penetrating part 12 can also be designed as a split structure and fastened by threads or the like, so that the gingiva-penetrating part 12 can be removed for further cleaning when curettage is needed. In some other embodiments of the present invention, the bone-penetrating part 11 and the gingiva-penetrating part 12 can also be designed as a split structure connected as a whole by welding, gluing and other processing methods according to the processing difficulty.

[0035] The cross-sectional profile of the gingiva-penetrating part 12 is a polygonal or key-tooth-shaped anti-rotation structure, and the cross-sectional profile shape of the inner wall surface of the gingival collar 2 corresponds to the cross-sectional profile shape of the gingiva-penetrating part 12.

[0036] Specifically, as Figure 3As shown, in this embodiment, the cross-sectional profile of the gingiva-penetrating part 12 is a regular hexagon. Correspondingly, the cross-sectional profile shape of the inner wall surface of the gingiva-penetrating collar 2 is a regular hexagon. The gingiva-penetrating part 12 is closely attached to the gingiva-penetrating collar 2 to avoid problems such as crown loosening caused by relative rotation between the gingiva-penetrating collar 2 and the gingiva-penetrating part 12. In other embodiments of the present invention, the cross-sectional profile of the gingiva-penetrating part 12 and the cross-sectional profile of the inner wall surface of the gingiva-penetrating collar 2 can also be structures such as a regular octagon, a cross shape, or a key tooth shape, as long as relative fixation in position between the two is achieved.

[0037] Furthermore, in this embodiment, the gingiva-penetrating part 12 is a cylindrical structure, which is indented inward relative to the bone-penetrating part 11. An indentation platform 15 is formed between the gingiva-penetrating part 12 and the bone-penetrating part 11. The gingiva-penetrating collar 2 abuts against the indentation platform 15, so that the position of the gingiva-penetrating collar 2 and the implant body 1 is relatively fixed in the axial direction.

[0038] Of course, the structure of the gingiva-penetrating part 12 is not limited to this. As long as the position of the gingiva-penetrating collar 2 and the implant body 1 can be relatively fixed in the axial direction, such as Figure 4 As shown, in another embodiment of the present invention, the gingiva-penetrating part 12 is a frustum structure with a conical angle facing upward. The hollow structure inside the gingiva-penetrating collar 2 cooperates with the gingiva-penetrating part 12 and abuts against the outer wall of the gingiva-penetrating part 12.

[0039] Such as Figure 5 As shown, the gingiva-penetrating collar 2 includes a main body part 21 and a connecting part 22 extending proximally along the proximal end surface of the main body part 21. The main body part 21 is buried in the gingival soft tissue, and the proximal end surface of the connecting part 22 is connected to the dental implant abutment or the dental crown.

[0040] Specifically, in this embodiment, the main body part 21 is a frustum structure with a conical angle facing downward, so that after the gingiva-penetrating collar 2 is buried in the gingival soft tissue, it is convenient for subsequent removal and replacement. At the same time, the smooth outer wall without sharp corners can avoid damage to the gingival soft tissue.

[0041] Of course, the structure of the main body part 21 is not limited to this. In some other embodiments of the present invention, such as Figure 6 As shown, the main body part 21 is a cylindrical structure; or, as Figure 7 As shown, the proximal end surface and the distal end surface of the main body part 21 are coaxial circles, and its outer wall surface is a smooth curved surface protruding outward; or, as Figure 8As shown, the proximal end face and the distal end face of the main body portion 21 are coaxial circles, and its outer wall surface is a smooth curved surface that is recessed inward. As long as the cross-sectional profile of the main body portion 21 is circular, and from the distal end face to the proximal end face of the main body portion 21, the outer diameter of its cross-sectional profile remains unchanged or increases smoothly, through this structural design, when the gingival sleeve 2 is removed and replaced, it will not cause secondary damage to the gingival soft tissue.

[0042] Furthermore, in this embodiment, the connecting portion 22 is a frustum of a cone structure and is bonded to the abutment or the crown. In other embodiments of the present invention, the connecting portion 22 can be designed into different structures according to different abutment and crown structures, and is not limited to the frustum of a cone structure.

[0043] In some embodiments of the present invention, the material of the gingival sleeve 2 is a biomedical metal or a polymer material, and the surface roughness of the gingival sleeve 2 is less than or equal to Ra0.4μm.

[0044] Preferably, in this embodiment, the material of the gingival sleeve 2 is zirconia. Using zirconia similar to ceramics, on the one hand, after machining and sintering, the zirconia-textured gingival sleeve 2 can meet the requirement that the surface roughness is completely less than or equal to Ra0.4μm, without the need for manual polishing, reducing costs and improving the quality and efficiency of the product; on the other hand, the zirconia material is white. When the gingiva atrophies, the white zirconia sleeve buried in the gingiva is exposed. Since it is the same color as the white crown, it is basically impossible to tell that this is a false tooth here, improving the aesthetic performance. In other embodiments, according to different manufacturing processes, the gingival sleeve 2 can also be made of titanium, titanium alloy, polyetheretherketone, polymethyl methacrylate, and composite materials of the above-mentioned related materials, etc. Among them, the composite material can be a multi-layer composite material such as titanium alloy and polyetheretherketone.

[0045] In some other embodiments of the present invention, the surface of the gingival sleeve 2 is coated with a coating, and the material of the coating is a biomedical metal or a polymer material such as zirconia, titanium, titanium alloy, 316LSS, polyetheretherketone, polymethyl methacrylate, and related composite materials, and the surface roughness of the coating is less than or equal to Ra0.4μm.

[0046] The installation and replacement process of the soft tissue level implant in the present invention will be specifically described below:

[0047] During the installation process, a ball drill, a guide drill, a forming drill, etc. are successively used to form an alveolar socket with the required structure in the alveolar bone. The implant matrix 1 is installed into the alveolar socket, and a threaded connection is formed between the bone-penetrating part 11 and the alveolar socket. The gingiva-penetrating part 12 extends into the gingival soft tissue. The gingiva-penetrating collar 2 is sleeved on the gingiva-penetrating part 12, and then the dental crown and the dental implant abutment are successively assembled with the implant matrix 1. The inner gingival part 21 is buried in the gingival soft tissue, and the connecting part 22 abuts against the dental implant abutment or the dental crown.

[0048] After inflammation is detected, during the replacement process, the dental crown, the dental implant abutment and the gingiva-penetrating collar 2 are successively removed, so as to expose the space originally occupied by the gingiva-penetrating collar 2. Without flap reflection, this area can be cleaned and treated. After cleaning, a brand-new gingiva-penetrating collar 2 is replaced, and the dental implant abutment and the dental crown are reinstalled.

[0049] In summary, by designing the soft tissue level implant as a split structure of a detachable implant matrix and a gingiva-penetrating collar, the present invention solves the problem of inconvenient removal of inflammation around the implant in clinical practice. If inflammation is detected, on the one hand, after the dental implant abutment is removed, only the gingiva-penetrating collar covered with biofilm in the gingival soft tissue needs to be pulled out. Without flap reflection, the space originally occupied by the original gingiva-penetrating collar can be curetted; on the other hand, there is no need to clean the implant matrix 1, and a clean gingiva-penetrating collar can be directly replaced onto the implant matrix, saving the cumbersome scraping procedure and reducing the probability of recurrent inflammation.

[0050] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments understandable by those skilled in the art.

[0051] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A detachable soft tissue level implant, characterized in that: The detachable soft tissue level implant includes an implant matrix and a gingiva-penetrating collar; The implant matrix includes a bone-penetrating part, and a gingiva-penetrating part extending proximally is provided on the proximal end face of the bone-penetrating part; The gingiva-penetrating collar has a hollow structure and is detachably sleeved at a fixed position on the outer wall of the gingiva-penetrating part; The cross-sectional profile of the gingiva-penetrating part is an anti-rotation structure in the shape of a polygon or a spline tooth, and the cross-sectional profile shape of the inner wall surface of the gingiva-penetrating collar corresponds to the cross-sectional profile shape of the gingiva-penetrating part; The gingiva-penetrating part is a cylindrical structure, which is indented inward relative to the bone-penetrating part, and an indented platform is formed between the gingiva-penetrating part and the bone-penetrating part, and the gingiva-penetrating collar abuts against the indented platform; The gingiva-penetrating part is a frustum structure with an upward conical angle, and the hollow structure of the gingiva-penetrating collar cooperates with the gingiva-penetrating part and abuts against the outer wall of the gingiva-penetrating part; The gingiva-penetrating collar includes a main body part and a connecting part provided on the proximal end face of the main body part, and the connecting part is connected to the implant matrix or the dental crown; The cross-sectional profile of the main body part is circular, and from the distal end face to the proximal end face of the main body part, the outer diameter of its cross-sectional profile remains unchanged or increases smoothly.

2. The detachable soft tissue level implant according to claim 1, characterized in that: The material of the gingiva-penetrating collar is a bio-medical metal or a polymer material, and the surface roughness of the gingiva-penetrating collar is less than or equal to Ra0.4μm.

3. The detachable soft tissue level implant according to claim 1, wherein: The surface of the gingiva-penetrating collar is plated with a coating, the material of the coating is a bio-medical metal or a polymer material, and the surface roughness of the coating is less than or equal to Ra0.4μm.

4. The detachable soft tissue level implant according to claim 2 or 3, characterized in that: The bio-medical metal or polymer material is zirconia, or titanium, or titanium alloy, or polyetheretherketone, or polymethyl methacrylate.

5. The detachable soft tissue level implant according to claim 1, wherein: The bone-penetrating part and the gingiva-penetrating part are an integrally formed structure, threads are provided on the outer wall surface of the bone-penetrating part, and a cavity structure for fixedly cooperating with the dental implant abutment is provided inside the bone-penetrating part and the gingiva-penetrating part.

6. An implant system, characterized in that, The dental implant system includes the detachable soft tissue level implant according to any one of claims 1 to 5.

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