• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A dental implant comprises an endosseous implant body (1), an implant head (3) and a neck zone (5), which is designed as a bending zone. A prosthetic platform (8) with an abutment equator (8a) forming the largest diameter of the implant head (3) is also provided. At least one rotation-securing engagement surface (6, 6´) or parts thereof lie / lie below the prosthetic platform (8). The dental implant is made in one piece. The implant head (3) is angled with respect to the longitudinal axis (A1) of the endosseous implant body (1). This can prevent the implant head from breaking off when the implant is screwed in, and it can also be used to compensate for angular differences after the implant is inserted.
    公开号:CH707716B1
    申请号:CH00190/14
    申请日:2014-02-14
    公开日:2020-03-31
    发明作者:Stefan Ihde Dr
    申请人:Biomed Est；
    IPC主号:
    专利说明:

    The invention relates to a dental implant according to the preamble of claim 1.
    [0002] Dental implants are usually anchored in the bone. They transfer the chewing force from the mouth to the bone and for this purpose they have a transmucosal zone that covers the distance between the implant head and the bone. Multi-part and one-part implants have been used in the past. This means that the implant body in the bone is separate or made in one piece with the abutment head. In addition, implants are known which allow screwing to the bridge, or those which allow cementing or gluing. If the bridge and abutment head are screwed together, the bridge can be easily unscrewed and e.g. be repaired.
    The often unfavorable bone conditions in the mouth present special problems for the implantologist and prosthetician: the bone is often in unfavorable places and / or in an unfavorable formation, and therefore the implant bodies are often not introduced into the jaw parallel to one another. In order to solve this problem, angled abutments were developed on the one hand (i.e. the abutments are being screwed onto the implant, but they have an angle). On the other hand, one-piece implants have been specified which have a bendable neck and which allow the abutment heads to be parallelized by bending the neck after insertion. In practice, these bends are associated with risks, particularly with the fracture of the implant neck during insertion or turning, and also with undesirable fractures of the bone. Since the metal structure of the implant body changes in the neck (= bending) area during bending, bending of the implant neck is only possible in practice up to approx. 15 degrees. If you bend more, there is a risk of material fatigue. It is optimal if, depending on the overall morphology of the implant body, i.e. for all sub-areas of the implant, there is an identical or almost identical metal structure, and in particular in the thinner neck area there is no higher hardness of the material.
    By too strong and in particular by repeated bending of the implant neck, the material present there is of greater hardness, and the brittleness increases. Some implants can break off immediately during the bending process, while others only fail with the long-term alternating loads with chewing function.
    The aim of this invention is the development of an implant, which can advantageously compensate for the greatest possible angle differences, and in which the head cannot break off due to its morphology or changes in the metal structure during the use phase or during the insertion of the implant.
    [0006] This object is achieved according to the invention by the features of claim 1. The implant is made in one piece and the head is angled relative to the longitudinal axis of the implant body, e.g. 10 to 25 degrees. It is important for the functioning of the implant that this bend is not created by bending after the implant body has been turned, but that the implant with this head angle is produced on the machine during manufacture. As a result, the metal structure of the implant body is unchanged from the raw material. Changes in an acceptable range only occur if the implantologist additionally changes the angle between the head and the implant axis after inserting the implant, i.e. adapts by bending.
    With this simple solution it is achieved that angle differences of a larger extent can be compensated for, because for the angle provided by the manufacturer, for example 10 to 25 degrees, there is an additional bend of about 15 degrees that can be generated after insertion of the implant by bending. I.e. if the head of the implant is angled at 15 degrees, the head of the implant can be bent straight to 0 degrees against the longitudinal axis without any danger to the metal structure, or it can also be bent to a total of 30 degrees without danger. If you consider that the head bent in this way can still be oriented in different directions by turning it in or out (e.g. by 180 degrees), then a 2 × 30 degree deviation from the main axis of the implant is possible, which in practice is more than sufficient to to position the implant head prosthetically favorably and to supply it easily.
    A great difficulty for the insertion of such pre-implants is the insertion in the bone. In order to be able to work with mechanical insertion aids, it is absolutely necessary to place the insertion aid exactly on the implant in the axial direction. In addition, engagement surfaces must be provided in the region of the implant head, which allow the transmission of insertion forces. Since the implant head has to be designed as graceful as possible to improve the aesthetics, it is difficult to attach the necessary areas for angled implants, because the areas on at least one side of the head are too small.
    The above-mentioned problems are solved in the introduction of the predicted implant described in that the surfaces parallel to the main implant axis are at least partially attached below the prosthetic platform or the largest diameter of the implant head, while the opposite surface or further surfaces above the prosthetic platform or the largest diameter of the implant head are attached. At least two surfaces must be attached for this implant to work properly, more surfaces are technically possible and sometimes helpful. These surfaces interact with corresponding surfaces of the insertion aid of the implant.
    [0010] In a particularly advantageous embodiment, the implants are delivered preassembled together with the insertion aids.
    For the implant, the insertion aid is used on its own or in conjunction with a structure that extends the lever (e.g. ratchet, extension) as a bending instrument.
    The solution deviates from the previous state of the art in an astonishing way: solutions are known in which the surfaces or shapes that enable the rotation to be secured between the implant and insertion aid are either accommodated in the implant head (for example, “internal hexagon”, “internal octagon” »,« Internal trilobe »etc.), or these structures can be found outside the head (e.g. as an external hexagon).
    It does not matter for the functioning of the invention whether the head structure is designed for the later cementing of the prosthetic workpiece or for screwing on a thread. The combination of screwing and cementing, in which both a screw connection via the thread and a cementing on the outer cone is provided, is an advantageous technical solution in some cases.
    Description of the drawings
    Fig. 1 shows a dental implant according to the invention with the endosseous implant body (1) and threaded area (2) and implant head (3). An engagement surface (6) parallel to the main implant axis (A1) lies below the abutment equator (8a) or the prosthetic platform (8), while the opposite surface (7) lies above the abutment equator.
    An internal thread (4) on the head assembly (9) enables the mounting of a screwed prosthetic workpiece. Between the implant head (3) and the implant body there is a thinner neck area (transmucosal area) in which the implant head (3) of the implant is angled relative to the implant body (1) and can also be bent after insertion of the implant.
    Fig. 2 shows the implant head (3) from above, with the prosthetic platform (8), the largest circumference at the abutment equator (8a) and the engagement surface (7). An additional catch (12) is provided in the head assembly (9) on which the insertion aid can be supported.
    Fig. 3 shows a dental implant according to the invention with the endosseous implant body (1 ') and wide thread area (2') in the vicinity of the implant tip and the implant head (3). An engagement surface (6 ́) parallel to the main implant axis (A1) lies below the abutment equator (8a) or the prosthetic platform (8), while the opposite engagement surface (7 ́) lies above the abutment equator. An internal screw connection (4) on the head assembly (9) enables the mounting of a screwed prosthetic workpiece. Instead of a narrow point in the area of the neck which is tapered for the bend in the mouth, the neck of the implant tapers below the implant head (3) without a special bending zone being provided.
    4 shows a compilation of the implant head (3) according to the invention with the insertion aid (10). Above the internal thread (4) there is a hole (11) in the insertion aid (10) through which the two workpieces can be screwed together using a screw (not shown here).
    The insertion aid (10) has corresponding engagement surfaces (6a, 7a) which cooperate with the axially parallel engagement surfaces of the implant, thereby ensuring that the implant and insertion aid are secured against rotation, and thus screwing the implant into the bone enable.
    In a particularly advantageous embodiment of the implant, conical compression thread areas (2) and wide apical thread areas (2 ́) are combined with one another, with which the apical thread (2 ́) can cut into the opposite cortex at the same time, and the compression thread holds well in the compressible cancellous bone structure.
    The implant according to the invention can be offered and used with compression screws (2, Fig. 1) and apical cutting screws (2 ', Fig. 3), giving the dentist the choice of either the conical compression of the soft bone for anchoring use or just cortical support, ie the apical cutting thread.
    List of reference numbers
    [0022]<tb> A1 <SEP> longitudinal axis<tb> 1, 1 ́ <SEP> implant body<tb> 2, 2 ́ <SEP> thread area of the implant body<tb> 3 <SEP> implant head<tb> 4 <SEP> internal thread for the screw connection<tb> 5, 5 ́ <SEP> neck zone or transmucosal zone of the implant<tb> 6, 6 ́, 7 <SEP> engagement surfaces on the implant, parallel to the main axis of the implant<tb> 6a, 7a <SEP> Corresponding engagement surfaces on the insertion aid<tb> 8 <SEP> prosthetic platform<tb> 8a <SEP> forming the abutment equator as the largest diameter of the implant head<tb> 9 <SEP> head structure over the prosthetic platform or over the head equator<tb> 10 <SEP> insertion aid<tb> 11 <SEP> Opening for screwing the insertion aid and implant head<tb> 12 <SEP> click or rest below the engagement surface (7)
    权利要求:
    Claims (4)
    [1]
    1. Dental implant with an endosseous implant body (1, 1 ́), a neck zone (5, 5 ́), which is designed as a bending zone, and an implant head and with a prosthetic platform (8) with one of the largest diameter of the implant head (3) forming abutment equator (8a), characterized in that a rotation-securing engagement surface (6, 6 ́) or parts thereof lies below the prosthetic platform (8), a further rotation-securing engagement surface (7, 7 ́) for the interaction of the Implant head (3) with an insertion aid lies above the prosthetic platform (8), the dental implant being made in one piece and the implant head (3) being angled with respect to the longitudinal axis (A1) of the implant body (1, 1 ́).
    [2]
    2. Dental implant according to claim 1, characterized in that an internal thread (4) is provided for screwing to a prosthetic workpiece in the head structure (9) of the implant head.
    [3]
    3. Dental implant according to claim 1 or 2, characterized in that a conical head structure (9) of the implant head (3) for connection to a prosthetic workpiece is realized by cementing.
    [4]
    4. Dental implant according to one of the preceding claims 1 to 3, characterized in that in the endosseous implant body (1) conical thread areas (2) and / or at the implant tip wider, cutting thread areas (2 ') are present.
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    同族专利:
    公开号 | 公开日
    US20140255872A1|2014-09-11|
    LT2014010A|2014-09-25|
    CZ31297U1|2017-12-18|
    CH707716A2|2014-09-15|
    RU145973U1|2014-09-27|
    DE202013002300U1|2013-07-01|
    BG2052U1|2015-05-29|
    LT6092B|2014-11-25|
    UA88921U|2014-04-10|
    WO2014139668A1|2014-09-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4645453A|1985-09-19|1987-02-24|Niznick Gerald A|Bendable adapter for dental implant|
    DE3742158A1|1987-12-12|1989-06-22|Bauer Ernst Dental Lab|SCREW IMPLANT FOR A JAW BONE|
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    AT432667T|2006-04-25|2009-06-15|Biomed Est|DENTAL IMPLANT|
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    WO2013008962A1|2011-07-11|2013-01-17|시원|Angular friction joint type of dental implant|EP2986247B1|2013-06-13|2019-11-13|Hager & Meisinger GmbH|One-part dental implant, kit comprising a dental implant and a device for bending a dental implant|
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    WO2020030957A1|2018-08-10|2020-02-13|Barath Gabor|Implant structure mainly for cortical implanting|
    法律状态:
    2018-04-30| NV| New agent|Representative=s name: LUCHS AND PARTNER AG PATENTANWAELTE, CH |
    优先权:
    申请号 | 申请日 | 专利标题
    DE202013002300U|DE202013002300U1|2013-03-11|2013-03-11|Dental implant with angled head and bending zone|
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