• 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:
    The invention relates to a dental prosthesis, such as a prosthetic bridge construction or single tooth replacement (3), comprising a main part and a bottom part (5) for connection to a dental implant system (1). The prosthesis comprises at least one angled connecting channel (9) in front of the prosthetic screw (4) arranged to attach the prosthesis to the implant system (1). The connecting channel (9) has a first opening (10) on one side of the prosthesis and a second opening (11) in the bottom part (5). ) to extend the prosthesis to the dental implant system and the connecting channel (9) thereby constitutes a continuous passage between the first opening (10) and the second opening (11). According to the invention, the angled connecting channel (9) is formed by a connecting spacer (12) for fixing to the dental implant system (1) at implant or spacer level, and a bendable, elongate tube (13) fitting said connecting spacer to define a desired angle of the connecting channel (9). ) and for the subsequent Wax-up of the final tooth restoration (3). The invention also relates to a method for manufacturing such a dental prosthesis.
    公开号:SE1300425A1
    申请号:SE1300425
    申请日:2013-06-13
    公开日:2014-12-14
    发明作者:Mikael Escobar
    申请人:Brånemark Integration Ab；
    IPC主号:
    专利说明:

    According to EP 2053985, the seat of the prosthetic screw screw head is integrated with the denture / prosthetic reconstruction. But there is also an example of a separate seat for the screw head which can subsequently be inserted and attached to the prosthetic reconstruction. It is also mentioned that another embodiment may be provided with a seat for a dental implant or a spacer element, such as a recess adapted to cooperate with a projection on the dental implant or the spacer element. In the case of an integrated ski seat, the seat itself has been given a curved or semi-dangerous geometry by means of a drill bit. A matching prosthetic screw with beveled, curved, spherical or semi-spherical screw head is then used to attach the denture / prosthetic reconstruction.
    As far as the manufacturing method is concerned, the connecting channel is produced by means of a drilling method. More specifically, the drilling method comprises a first, straight bore from a first starting point, and a second straight bore from a second starting point and in such a way that the first and second outcrops intersect within the prosthesis / prosthetic reconstruction itself to form the connecting channel. Although the described tooth reconstruction makes it possible to place the orifice of the screw channel on an invisible side of the tooth reconstruction, the specific drilling procedure and the design of the special screw seat integrated in the prosthesis means a rather complex and difficult task for the dentist.
    There is therefore a need to design the denture or bridge structure with an angled screw channel (connecting channel) which in a simpler and more visible way allows placement of the mouth of the screw channel on an aesthetically unimportant surface of the prosthesis, for example on the inside or occlusive surface of the denture or the bridge reconstruction.
    According to the invention, the angled screw channel is formed by the denture, the connecting channel, by a connecting spacer arranged to be attached at implant or spacer level of the implant and a bendable, elongate tube fitting on said connecting spacer to define a desired angle of the connecting channel W and -up of the final tooth restoration. According to an embodiment of the invention, the bendable tube is made of a plastic material, such as PMMA or similar material, so that the tube can be bent to a desired angle with breastfeeding / heating.
    In accordance with a further embodiment of the invention, the tube is arranged to be bent to the desired angle by means of a special tool.
    In the following, the invention will be described in more detail with reference to the accompanying drawings, where Figure 1 is a schematic overview of a prosthetic tooth situation, Figure 2 is a side view of two connection distances according to the invention, Figure 3 is a longitudinal section of a flexible pipe according to the invention Figure 4a is a side view showing how the bend only the pipe connected to a connection distance is arranged to be bent by means of a tool made in one piece, Figure 4b is a side view showing a prepared prosthesis connected to analogues by means of a prosthetic screw, and Figure 5 shows the use of so-called scan bodies for dental CAD-CAM technology.
    Figure 1 shows a prosthetic tooth situation where a conventional dental implant screw 1 is anchored in the jawbone 2 by means of conventional technology which is not described in more detail here. A dental prosthesis / prosthetic reconstruction 3 is connected to the implant screw 1 by means of a prosthetic screw 4. It is understood that the prosthesis 3 can be connected directly to the implant screw itself, as shown in Figure 1, or connected indirectly by means of a spacer arranged on the implant screw. a main part with a base portion 5 and an upper portion 6 with a front side 7 as well as a rear or inside, occlusal surface 8.
    The prosthetic screw 4 is applied by means of a screwdriver 24 via a screw channel 9 in the prosthesis.
    The screwdriver 24 can be an ordinary ball end type screwdriver with a hexagon (hex), square or Torx socket for mounting the prosthetic screw with an angle of up to 30 °.
    Ball end type precision tools are on the market and are therefore not described in more detail here.
    The screw channel 9 has a first opening, orifice 10, for screw access, through which the screw 4 can be inserted, and a second opening 11 in the base portion 5 of the prosthesis. The screw channel 9 thus forms a continuous connecting channel between the first opening 10 and the second opening 11. in the prosthesis. The connecting channel 9 is angled so that the first opening is located on the aesthetically unimportant surface of the prosthesis, ie on the inside or the occlusal surface of the prosthesis.
    According to the invention, the angled screw channel 9 is formed by the denture by a connecting spacer 12 for connection to the implant screw 1 and a bendable elongate tube 13 which fits on the connecting spacer and which defines said angled screw channel 9 and on which a wax-up (growth) of the final, permanent the denture is prepared.
    Figure 2 shows two examples of connection distances 12 in more detail. The spacers have a base portion in the form of a cylindrical collar 14 for connection to an implant system at implant or spacer level by means of a standard prosthetic screw 4, a cylindrical or conical main body provided with retention grooves 15 for optimal bonding strength and long-term stability and an upper portion 16 with tripod geometry for rotational locking of the bendable tube 13. The connection spacers are prefabricated / machined with industrial precision and can be made of different biocompatible materials, such as titanium, zirconium, cobalt chrome, gold or similar materials. To be cast in any type of dental alloy, the connection spacers can also be made of a curable material. The base part's interface has an internal or external connection compatible with current dental implant systems on the market. The connection may not be form-locked for so-called multiple unit reconstructions such as dental bridges or form-locked for single-tooth replacements.
    Figure 3 shows a bendable plastic pipe 13 which fits on a connecting spacer 12 and is used for wax-up of a desired shape of the final bridge construction. The pipe is made of a plastic material such as PMMA or some similar material that allows an angle of the pipe with breastfeeding / heating and is curable for dental casting technology. By using a special bending tool (see Figure 4), a desired angle of up to 30 ° can be obtained.
    The part of the tube 13 which forms the continuous channel or passage has a base portion 17 which fits on a cylindrical connection distance and is made with a cylindrical, triangular-shaped inner geometry for rotational locking to the distance. Figure 4 shows how bending of the pipe 13 can be achieved with a tool 18.
    The bendable plastic tube 13 is designed to fit on a conical connection distance and the base portion 17 therefore has a slightly conical inner triangular geometry. The base portion 17 further has a slightly larger outer diameter compared to the diameter of the cylindrical upper part 19 of the tube. As also shown in Figure 3, the tube has a waist-shaped portion 20, by giving a portion of the tube a reduced wall thickness, and which waist-shaped portion thereby forms the desired bending area of the tube 13. The cylindrical portion 19 is made with retention grooves 21 to increase the mechanical the bond to the material used in the growth.
    The bending is effected by means of a tool 18 which is made in one piece and which has a part 22 adapted to be inserted into the screw channel while the base portion 17 of the tube is connected to a conical connection distance on analogues 23, see Figure 4a.
    Figure 4b further illustrates a prepared prosthesis with connection distance attached to analogues 23 by means of a prosthetic screw 4. The prosthetic screw 4 may be a standard prosthetic screw with a hexagonal standard socket, preferably made of titanium, with a DLC coating or the like, for interaction with a screwdriver 24 of ball-end type with hexagonal, square or Torx socket.
    In accordance with the invention method, the connection distances 12 are first connected to analogues 23 by means of prosthetic screws 4. Then the plastic pipes 13 are placed on the connection distances and a desired, optimal angle of the screw channel is determined. The plastic pipes are then angled by means of the previously mentioned bending tool 18 and a heating by means of breastfeeding or hot air 25 to the intended, optimal screw channel angle. A conventional growth to the desired final shape of the prosthesis is then prepared on the plastic tubes 13, after which the plastic tubes are cut at the occlusal level.
    Conventional tooth extraction techniques are then used to convert the waxed model to a bridge restoration in the desired material, such as any suitable dental metal alloy (gold, cobalt chrome, etc.) or a pressure ceramic material. The fit of the restoration so connected to the connection distances is checked and possibly adjusted in the dental laboratory.
    Cosmetic squinting is performed as needed in accordance with conventional techniques.
    As an alternative to the described laboratory technique performed by a dental technician, dental CAD-CAM technology can be used to produce the dental restoration. In this case, special scan bodies 26, made of a PEEK material, are applied to the plastic tubes 13 as shown in Figure 5. A conventional growth of the tooth restoration is prepared on the plastic tubes with its scan bodies and scanned with someone on the market. dental screens or conventional 3D scanners. Suitable materials such as titanium, cobalt chromium or zirconium are then selected. The scanned part is checked and shipped in the form of a central production unit.
    The invention is not limited to the examples described here but may be varied within the scope of the appended claims.
    权利要求:
    Claims (13)
    [1]
    A dental prosthesis, such as a prosthetic bridge construction or single tooth replacement (3), comprising a main part and a bottom part (5) for connection to a dental implant system (1), and at least one angled connecting channel (9) for a prosthetic screw (4) arranged to eraxerate the prosthesis at the implant system (1), the connecting channel (9) having a first opening (10) on one side of the prosthesis and a second opening (1 1) in the bottom part (5) for extending the prosthesis at the implant system and wherein the connecting channel (9) constitutes a continuous passage between the first opening (10) and the second opening (11), characterized in that the angled connecting channel (9) is formed by a connecting distance (12) for fixing to the dental implant system (1) at implant or distance level, and a bendable, elongate tube (13) fitting at said connection distance, the tube (13) being formed with a waist portion (20) so as to define a suitable area for bending the tube at a desired angle f or the connecting channel (9) by means of breastfeeding / heating (25) and for a subsequent Wax-up restoration of the final denture (3).
    [2]
    Dental prosthesis according to claim 1, characterized in that the bendable tube (13) is made of a plastic material, for example PMMA or a similar material to allow said bending of the tube (13).
    [3]
    Dental prosthesis according to claim 2, characterized in that the bending of the tube (13) at the desired angle of the connecting channel (9) is arranged to be performed by means of a tool (15) comprising a part (23) arranged to be inserted into the free end of the tube. while the other end of the tube, its base part (14), is connected to the connection distance (12).
    [4]
    Dental prosthesis according to claim 2, characterized in that the bending of the tube (13) at the desired angle of the connecting channel (9) is arranged to be performed by means of a two-part tool (15) comprising a first part (16) which is adapted to the geometry and shape of the base part (14) of the pipe and a second part (17) adapted to the straight part of the connecting channel for screw access of the opposite, free end of the pipe (13).
    [5]
    Dental prosthesis according to claim 1, characterized in that the connecting distance (12) has a base part in the form of a cylindrical collar (14) for extending the connecting distance to the current implant system at implant or distance level by means of a prosthetic screw (4). , a cylindrical or conical main body provided with retention grooves (15) for optimal bonding strength and long-term stability and an upper part (16) with tripod geometry to prevent rotation of the bendable tube (13).
    [6]
    Dental prosthesis according to claim 5, characterized in that the base part of the connecting spacer (12) has an internal or external socket compatible with dental implant systems on the market.
    [7]
    Dental prosthesis according to claim 6, characterized in that the socket of the connection distance is without a form lock for restoration of several teeth such as bridge constructions or with a front lock for single tooth replacements.
    [8]
    Dental prosthesis according to claim 1, characterized in that the bendable tube (13) has a base part (14) with a slightly conical inner tripod geometry and a slightly larger outer diameter compared to the diameter of the upper cylindrical part (19) of the tube and a waist-shaped portion (20) by reduced wall thickness to define a desired bending area of the tube (13).
    [9]
    Dental prosthesis according to claim 8, characterized in that the outside of the cylindrical part (19) of the bendable tube (13) has retention grooves (21) for increasing the mechanical bond to the wax-up material used.
    [10]
    A method of manufacturing a dental prosthesis such as a prosthetic bridge structure or single tooth replacement (3), comprising a main part and a bottom part (5) for connection to a dental implant system (1), and at least one angled connecting channel (9) for a prosthetic screw (4). ) to extend the prosthesis to the implant system (1), the connecting channel (9) having a first opening (10) on one side of the prosthesis and a second opening (11) in the bottom part (5) for mounting the prosthesis to the implant system and wherein the connecting channel ( 9) thereby constitutes a continuous passage between the first opening (10) and the second opening (11), characterized in that the angled connecting channel (9) is formed by a bendable plastic pipe (13), that the plastic pipe (13) is bent by means of a bending tool (15,22) and a flarnma or hot air (25) to the desired angle for optimal prosthetic screw access of the duct and that a Wax-up model is prepared on the plastic tubes (13) and then converted to the final tooth prosthesis. 10 15 20
    [11]
    A method of manufacturing a dental prosthesis according to claim 10, characterized in that the wax-up model is transformed by conventional tooth casting technique.
    [12]
    A method of manufacturing a dental prosthesis according to claim 10, characterized in that the Wax-up model is transformed by dental CAD-CAM technology.
    [13]
    A method of manufacturing a dental prosthesis according to claim 12, characterized in that the so-called scan bodies (26) are placed in the plastic tubes (13), that the Wax-up model is prepared on the plastic tubes with their scan bodies, that the design is scanned by means of a dental scanner, that the scanned fi part is sent to a central manufacturing unit a final denture.
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    同族专利:
    公开号 | 公开日
    SE538410C2|2016-06-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN110621258A|2017-03-20|2019-12-27|斯特劳曼控股公司|Two-piece modeling aid|
    法律状态:
    2018-01-30| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1300425A|SE538410C2|2013-06-13|2013-06-13|Dental prosthesis and a method of making the prosthesis|SE1300425A| SE538410C2|2013-06-13|2013-06-13|Dental prosthesis and a method of making the prosthesis|
    EP14811030.7A| EP3007645A4|2013-06-13|2014-06-10|Dental prosthesis and a method for making the prosthesis|
    PCT/SE2014/000076| WO2014200404A1|2013-06-13|2014-06-10|Dental prosthesis and a method for making the prosthesis|
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