WO2014131646A2 - Système d'implant dentaire muni d'une vis de forme ajustée - Google Patents

Système d'implant dentaire muni d'une vis de forme ajustée Download PDF

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Publication number
WO2014131646A2
WO2014131646A2 PCT/EP2014/053037 EP2014053037W WO2014131646A2 WO 2014131646 A2 WO2014131646 A2 WO 2014131646A2 EP 2014053037 W EP2014053037 W EP 2014053037W WO 2014131646 A2 WO2014131646 A2 WO 2014131646A2
Authority
WO
WIPO (PCT)
Prior art keywords
screw
prosthesis
implant
thread
dental implant
Prior art date
Application number
PCT/EP2014/053037
Other languages
German (de)
English (en)
Other versions
WO2014131646A3 (fr
Inventor
Roland Binder
Original Assignee
Heraeus Kulzer Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heraeus Kulzer Gmbh filed Critical Heraeus Kulzer Gmbh
Publication of WO2014131646A2 publication Critical patent/WO2014131646A2/fr
Publication of WO2014131646A3 publication Critical patent/WO2014131646A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0068—Connecting devices for joining an upper structure with an implant member, e.g. spacers with an additional screw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/0003—Making bridge-work, inlays, implants or the like
    • A61C13/0004—Computer-assisted sizing or machining of dental prostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C9/00—Impression cups, i.e. impression trays; Impression methods
    • A61C9/004—Means or methods for taking digitized impressions
    • A61C9/0046—Data acquisition means or methods
    • A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • G—PHYSICS
    • G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
    • G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
    • G16H20/00—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance
    • G16H20/40—ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture

Definitions

  • the invention relates to a dental implant system or a dental implant combination comprising at least one implant for fastening in a jawbone, a prosthesis on which at least one artificial tooth can be placed and fastened and at least one screw for releasable attachment of the prosthesis to the at least one implant.
  • the invention also relates to a screw for such a dental implant system and to a method for producing a prosthesis for a dental implant system.
  • Dental implant systems are needed to replace one or more missing teeth with artificial tooth abutments.
  • an implant or several implants are attached or screwed into the jawbone in order to anchor the artificial tooth structure there.
  • superstructures come crowns in question but also so-called superstructures that are anchored to more than one point in the jaw and are used to replace multiple teeth or entire rows of teeth.
  • the implant is implanted in the jaw and then usually attached to an abutment with a screw in or on the implant. Subsequently, a prosthesis is placed on the abutment and glued there.
  • the actual dentures which is usually made of ceramic, for example, a ceramic crown or a veneer, is attached to the prosthesis, cemented, for example.
  • Such dental implant systems are known, for example, from DE 10 2006 036 715 A1, EP 2 2022 443 A1 or US 2012/301 849 A1.
  • US Pat. No. 5,180,303 A discloses an external index implant in which a prosthesis is placed on an implant from the outside and fastened with a flush screw.
  • WO 95/13028 A1 discloses an implant structure with a locking engagement in an implantation element.
  • WO 2005/065569 A1 discloses an implant which contains ceramic components.
  • there are also systems such as the dental implant system disclosed in WO 2006/137619 A1 or US 2008/280 255 A1, in which the abutments themselves have a thread which can be screwed into the implant.
  • the object of the invention is therefore to overcome the disadvantages of the prior art.
  • a dental implant system is to be found, in which the dentist should be able to expose the implant without destroying or damaging the prosthesis.
  • the dental implant system should offer as little as possible attack points for impurities.
  • the most stable possible connection of the prosthesis to the implant is to be achieved, which is able to transfer the forces and torques occurring during chewing movements as completely as possible to the implant fixed in the jaw.
  • a dental implant system comprising at least one implant for fastening in a jawbone, a prosthesis on which at least one artificial tooth can be placed and fastened and at least one screw for releasably securing the prosthesis to the at least one implant wherein the at least one screw has a thread and an engagement for rotating the screw, which is arranged on the opposite side of the screw from the screw, and the screw has a thread-oriented bearing surface, wherein in fully assembled dental implant system Support surface of at least one screw presses the prosthesis on the at least one implant and the prosthesis, the at least one implant and the at least one screw abut flush with each other, wherein the implant in the direction of the connecting surface to the prosthesis conically opening or cylindrical Berei having an internal thread of the implant from the connection surface to the Prosthesis spaced, wherein the inner surface of the implant corresponds to the outer surface of the screw, so that both close flush when the screw is fully screwed into the implant.
  • a flat and tight connection of the screw can be generated in the implant via a suitable screw with matching outer cylinder.
  • Such internal threads have in the circumferential thread grooves maximum the same diameter as the inner cylinder, so that the external thread of the screw can be easily inserted through the inner cylinder.
  • the engagement is realized with a réelleinbus.
  • the implant according to the invention preferably has an internal thread, so that the external thread of the screw fits into the internal thread of the implant, wherein preferably the internal thread of the implant fully absorbs the male thread of the screw.
  • a cavity is to be understood as meaning a macroscopic cavity, that is to say a cavity which has a volume of at least 0.01 mm 3 , preferably of at least 0.1 mm 3 , particularly preferably of at least 0.5 mm 3 . Smaller cavities always arise due to manufacturing tolerances or due to damage to the adjacent surfaces.
  • the completely screwed screw completely fills the interior of the implant, at least in the region of the connection surface to the prosthesis.
  • the inner surface of the prosthesis is equal to an outer surface of the screw on the end of the screw facing away from the thread.
  • This outer surface of the screw is positioned relative to the thread of the screw such that the outer surface of the screw rests flat against the inner surface of the prosthesis when the screw is fully screwed into the implant.
  • the prosthesis has at least one rotationally symmetrical through bore which has an at least partially decreasing diameter in the direction of the connecting surface to the at least one implant, preferably the prosthesis is a tubular sleeve with a bore or the prosthesis is a superstructure with at least two holes for attachment to at least two implants with at least two screws.
  • each screw is rotationally symmetrical except for the engagement and the thread, wherein the diameter of the screw from the thread increases to the opposite end or the diameter of the screw from the thread to the opposite end at least in the region of the support surface increases and remains the same area, so that preferably each screw is cylindrical tapered or in the direction of its thread except for the engagement and the thread relative to the screw axis.
  • the dental implant system has an inner index implant as an implant, which has a cavity open in the coronal direction for receiving the screw.
  • the present invention is particularly advantageous for internal index implants and not advantageous on outside index implants applicable.
  • the implant is an internal index implant.
  • the inventive construction with the conically opening or cylindrical area between the internal thread and the connection surface to the prosthesis requires an internal index implant.
  • a screw for such a dental implant system in which the screw is rotationally symmetrical except for the engagement and the thread, wherein the diameter of the screw from the thread increases to the opposite end or the diameter of the Screw increases from the thread to the opposite end at least in the region of the support surface and remains the same area, so that preferably the screw is tapered to the engagement and the thread relative to the screw axis cylindrical or in the direction of its thread.
  • the screw axis rotationally symmetrical support surface of the screw has an inclination angle of 10 ° to 90 ° to the screw axis, preferably a recession angle of 45 ° to 90 °, more preferably an inclination angle of 80 ° bs 90 ° or the rotationally symmetrical to the screw axis bearing surface of the screw is at least partially perpendicular to the screw axis.
  • the support surface is to exert a force in the direction of the screw axis on the prosthesis, large angles of inclination are preferred so that the support surface can exert the largest possible pressure parallel to the screw axis, which presses the prosthesis onto the implant. Therefore, it is particularly preferred according to the invention that the support surface is oriented perpendicular to the screw axis. Due to the vertical orientation, the force is particularly well transferred to the prosthesis when tightening the screw and the prosthesis is not loaded with radial forces. In addition, the screws are then particularly easy to manufacture.
  • the screw, the implant and the prosthesis are made of metal, preferably of a medical steel, a cobalt-chromium alloy or titanium, gold, platinum, palladium or an alloy from or with it, with medical steels, cobalt-chromium alloys, titanium and gold-based alloys being particularly preferred.
  • Metals, and in particular the metals mentioned, are particularly well suited for building up the parts of dental implant systems according to the invention, since they are less reactive and are also permanently harmless for use in the body.
  • the engagement in the at least one screw is arranged inside, so that the screw is rotationally symmetrical outside except for the thread, wherein the engagement of the at least a screw is preferably a recess with a multiple rotational symmetry, more preferably a four-, five- or a hexagonal hole is provided in the recess of the screw.
  • the thread opposite end of the at least one screw is to be shortened with the intervention, wherein preferably at least one predetermined separation point for shortening the thread opposite end of at least one screw the intervention is provided.
  • a screw which fits to different prostheses with different depths of holes.
  • the screw can be easily shortened to fit the prosthesis, so that the screw in the fully assembled state of the dental implant system does not protrude from the top of the prosthesis.
  • the engagement for tightening the screw extends over all the predetermined separation points.
  • predetermined breaking points simple breaking points come into question. But it can also be plugged several rings on the screw, which are separable.
  • the outer surface of the screw in the area of the predetermined separation points is evenly smooth. These areas can be coated.
  • the Screw to the engagement and the thread is rotationally symmetrical, wherein the diameter of the screw from the thread increases to the opposite end or the diameter of the screw from the thread increases to the opposite end at least in the region of the support surface and remains the same area, so preferably the screw is tapered to the engagement and the thread relative to the screw axis is cylindrical and / or tapered in the direction of its thread.
  • the objects of the invention are also achieved by a method for producing a prosthesis for a dental implant system, in particular a dental implant system according to the invention, in which after inserting one or more implants in the jaw of a patient with a three-dimensional imaging method
  • the oral cavity of the patient is at least partially recorded and processed into a first data set, wherein the position and orientation of the implant to the oral cavity or the positions and orientations of the implants to the oral cavity and / or each other determined and used to calculate the first data set, so that the first data set contains this information, data are read from at least portions of the outer surface of at least one screw from a memory as a second dataset, the areas of the outer surface of the real screw being provided as a contact surface with the prosthesis to be manufactured, and the first In order to determine the position and orientation of the areas of the outer surface of the screw is assumed that the screw is completely screwed into the implant, and the third set thus calculated information on a three-dimensional surface of a Contains the area of the oral cavity, at least a portion of at
  • prostheses can be produced in a simple manner, which closes flush with the associated implants and screws, so that a stable and tight connection of the prostheses with the implants and screws and also with the oral cavity and the jawbone can be realized.
  • the prosthesis is manufactured using the third set of data such that the prosthesis can be fixed with the at least one screw on the at least one implant such that the connections between the prosthesis and the at least one screw and between the prosthesis and the at least one implant is flush and without cavities.
  • This allows a particularly stable and tight connection. Due to the force-locking connection, this is particularly well suited to transmit the forces, that is, the torques and torsional forces.
  • a superstructure is made as a prosthesis, wherein in the calculation of the data sets at least two implants and at least two screws are considered mathematically, preferably the implants are assumed to be identical in shape and the screws as be adopted identically.
  • the seat of a prosthesis thus produced on the implants is particularly stable and particularly well protected against problems caused by torsional forces and torques during chewing movements of the patient by the surface force-locking connections, which absorb such forces particularly well and forward to the jawbone .
  • the prosthesis is manufactured using a CAD-CAM (Computer Aided Design) method and computer aided manufacturing (Computer-Aided Manufacturing).
  • CAD-CAM methods are particularly well-suited for the fully automatic prosthesis based on the calculated third data set.
  • the three-dimensional imaging method is performed with an SD camera. 3D cameras are particularly well suited to generating the data for the first record.
  • the implants can be pins for Determining the position and orientation of the implants and screwed in as fixed points for the imaging process.
  • the invention is based on the surprising finding that, by using a screw with a conical and / or cylindrical outer shape, it is possible to screw the prosthesis directly onto the implant or fix the prosthesis to the implant, without the need for an abutment.
  • the dental implant system according to the invention and the screw according to the invention can therefore be dispensed with an abutment for building the prosthesis.
  • the screw according to the invention can be used directly for the attachment of the prosthesis.
  • a prosthesis which is produced by a method according to the invention. Due to the shape of the screw and with adapted contact surfaces between the implant, the screw and the prosthesis remain in the fully assembled dental implant system no voids between the implant, the screw and the prosthesis.
  • the prosthesis is conditionally releasably connected to the implant via the screw.
  • Conditionally solvable means that only the dentist can loosen the screw and thus the prosthesis from the implant. For this, only the veneer of the prosthesis must be loosened so that the screw can be reached from above.
  • inventive structure of the dentist is able to solve the screw by access through the dental technical superstructure.
  • An important feature of inventive screws is also that divergent implants can be supplied, since each screw and each connection geometry determines their own insertion direction. As a result, divergences of up to 40 ° can be overcome.
  • the prosthesis and the veneering of the prosthesis can be manufactured as usual in the dental laboratory or can also be produced with a CAD-CAM method according to the invention. For this, only at least one bore, which fits the at least one screw, must be present or produced in the prosthesis.
  • the internal implant system is the first in which no cavities remain inside the dental implant system and in which no additional abutments have to be used when it is fully assembled.
  • the internal connection takes over the screw geometry, so that a flush connection is possible.
  • Figure 1 a schematic cross-sectional view of a dental implant system according to the invention with a screw according to the invention
  • Figure 2 is a schematic cross-sectional view of a dental implant system according to the invention with a conical screw according to the invention
  • Figure 3 is a schematic cross-sectional view of a dental implant system according to the invention with a screw according to the invention with predetermined separation points on the procedure;
  • Figure 4 is a schematic cross-sectional view of another dental implant system according to the invention with a screw according to the invention.
  • FIG. 5 shows a schematic perspective view of a prosthesis and four screws according to the invention for fastening the prosthesis.
  • the same reference numerals are used for the same components for the sake of simplicity, even if they may differ slightly.
  • Figures 1, 2, 3 and 4 show fully assembled dental Implant systems, in which therefore the screws 2 are screwed into the implants 1 until they stop.
  • FIG. 1 shows a schematic cross-sectional view of a dental implant system according to the invention with a screw according to the invention 2.
  • the dental implant system consists of an implant 1, the screw 2 and a prosthesis 4. All parts 1, 2, 4 of the dental implant -Systems are made of titanium or a medical steel or other suitable metal.
  • the prosthesis 4 has a bore for receiving the screw 2. If the prosthesis 4 is a superstructure to be anchored at several points, the dental implant system is fastened with several screws 2 and several implants 1 in the jawbone.
  • the screw 2 is externally cylindrical except for an external thread 8 and has a bearing surface 5, which is arranged at an angle of 90 ° to the screw axis (in Figure 1 in the vertical direction).
  • the support surface 5 of the screw 2 has a matching counterpart in the prosthesis 4, so that the prosthesis 4 is pressed with the support surface 5 of the screw 2 on the implant 1 when the screw 2 is completely screwed the implant 1, as shown in Figure 1 is.
  • the implant 1 has an external thread 7 for fastening the implant 1 in the jawbone and an internal thread 8 for receiving the matching external thread 8 of the screw 2.
  • the length of the external thread 8 of the screw 2 is matched to the length of the internal thread of the implant 1.
  • an engagement 9 is provided in the form of a hexagon socket, with which the screw 2 can be tightened with a hex.
  • the prosthesis 4 is placed on the implant 1 and connected.
  • the surfaces of the prosthesis 4 and of the implant 1 are adapted to one another in such a way that the connecting surface 10 causes a flat gap-free connection between the implant 1 and the prosthesis 4.
  • the screw 2 forms with the implant 1 and the prosthesis 4 a gap-free surface connection by the surfaces of the screw 2 and the prosthesis 4 and the implant 1 are coordinated.
  • connection of the parts 1, 2, 4 is dense and forces and torques due to chewing movements can be well from the prosthesis 4 on the implant. 1 be transmitted.
  • the implant 1 can thus absorb well the torsional forces arising during chewing.
  • the screw 2 according to the invention has a cylindrical shape except for the bearing surface 5 on the outer surface. Due to the bearing surface 5, the screw 2 has on the outer surface so in the sum of a thread 8 towards tapered shape, or for meshing 9 out widening shape. Starting from the thread 8, the outer diameter of the screw 2 becomes wider towards the end of the screw 2 (the screw head) opposite the thread 8, or the outer diameter remains constant. The outer diameter of the screw 2 never tapers in this area. This not only applies to the screw 2 according to the invention according to FIG. 1, but also represents a fundamental principle for all screws 2 according to the invention, as they are also shown in the following figures.
  • FIG. 2 shows a schematic cross-sectional view of another dental implant system according to the invention with a conical screw 2 according to the invention, which tapers conically from the screw head (upper end of the screw 2) to a thread 8 of the screw 2.
  • the screw 2 has a support surface 5, which is inclined at an angle of approximately 35 ° to the screw axis.
  • the screw 2 is tapering in the region of the bearing surface 5 tapering towards the thread 8.
  • the screw 2 engages with its thread 8 in an internal thread 8 of an implant 1, thereby drawing a prosthesis 4 with a matching to the outer surface of the screw 2 hole of the same symmetry on the implant. 1
  • FIG. 2 also shows the completely assembled state of a dental implant system.
  • the bore in the prosthesis 4 and the end in the internal thread 8 recess in the implant 1 are aligned with each other and thus form a continuous smooth contact surface with the screw 2.
  • the provided for the connection of the components 1, 2, 4 surfaces of the screw 2, the implant 1 and the prosthesis 4 are thus matched to one another in such a way that the dental implant system in the assembled state (shown in FIG. 2) forms surface-engaging connecting surfaces.
  • the dental implant system in the assembled state shows in FIG. 2 forms surface-engaging connecting surfaces.
  • no cavities are preferably present in the interior of the dental implant system between the screw 2, the implant 1 and the prosthesis 4.
  • the implant 1 has an external thread 7 for fastening or screwing the implant 1 into a jawbone (not shown).
  • the connecting surface 10 between the implant 1 and the prosthesis 4 is chamfered so that the prosthesis 4 centered on the implant 1 when placed in the correct position.
  • the bonding surface 10 may be conical but also indexed.
  • the connecting surface 10, that is, the underside of the prosthesis 4 and the top of the implant 1, which are superimposed in the assembled state could have a fourfold orschreib hand or a completely broken (single) symmetry, so that the prosthesis 4 only a few or preferred can even be placed and fixed only in one orientation on the implant 1.
  • the upper surface of the prosthesis 4 can be indexed, that is, be configured with a broken symmetry.
  • a crown (not shown) may then be secured to the prosthesis 4 with only one or at least one clearly correct, particular orientation.
  • This indexing of the surfaces of the prosthesis 4 and also of the implant 1 is basically useful and can therefore be realized according to the invention for all embodiments. This indexing thus represents a general principle which is preferred according to the invention.
  • FIG. 3 shows a schematic cross-sectional view of a further dental implant system according to the invention with a screw 2 according to the invention with a plurality of predetermined separation points 12 in the region of the engagement 9 of the screw 2.
  • the construction is fundamentally similar to the abutments according to FIGS. 1 and 2. Also in FIG again shown the fully assembled state of the dental implant system, as it is used in a patient in the jawbone.
  • the prosthesis 4 can again be configured as a superstructure for fastening with a plurality of screws 2 in a plurality of implants 1 or as a sleeve for a tooth crown for fastening with only one screw 2 in an implant 1.
  • the connecting surface of the prosthesis 4 to the implant 1 is partially horizontally flat here. Only in the innermost area a slight inclination is provided, but already sufficient for the correct orientation of the prosthesis 4 on the implant 1.
  • the region of the screw 2 between the approximately perpendicular to the screw axis oriented circumferential bearing surface 5 and the cylindrical portion of the screw 2, which is adjacent to the thread 8 of the screw 2, here is slightly tapered to the thread 8 towards converging.
  • FIG. 4 shows a schematic cross-sectional view of another dental implant system according to the invention with a screw 2 according to the invention.
  • the structure is fundamentally similar to the structures according to FIGS. 1, 2 and 3.
  • FIG. 4 again shows the completely assembled state of the dental implant system. Systems shown.
  • FIG. 5 shows a schematic perspective view of a prosthesis 4 that can be connected to four screws 2 with four matching implants (not shown).
  • the prosthesis 4 is a superstructure that is fixed at several points in the jaw. For this purpose, four implants are first inserted into the jaw, for example screwed in. The position of the implants in the jaw is recorded with a 3D camera. The 3D data are evaluated by calculating the surface of the jaw and the position and orientation of the implants to each other and stored as a record.
  • the data set thus obtained is stored and used to manufacture the prosthesis 4 using a CAD-CAM method.
  • the screws 2 are uniform standard screws with a hexagonal hole 9 as an intervention.
  • the surface of the screws 2 is known and is taken into account in the calculation of the surface of the prosthesis 4 in the CAD method, that is to say that the surface of the screws 2 used for fastening the prosthesis 4, which later is intended to lie flush against the prosthesis 4, is included in the computer model of the oral scan with the implant positions and implant orientations to calculate the surface of the prosthesis 4 to be produced by the CAD method.
  • the orientation and position of the screws 4 can be determined based on the orientation and position of the implants.
  • the general principle underlying the invention is that the prosthesis 4 is preferably produced by means of a CAD-CAM method.
  • the situation in the oral cavity can be recorded with the aid of a camera, preferably with a 3D camera, in order to transfer the necessary information to the virtual model in the CAD method and to the prosthesis 4 using the CAM method.

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Dental Prosthetics (AREA)

Abstract

L'invention concerne un système d'implant dentaire comprenant au moins un implant destiné à être fixé dans un maxillaire, une prothèse sur laquelle au moins une dent artificielle peut être posée et fixée, et au moins une vis permettant de fixer de manière amovible la prothèse sur ledit au moins un implant, ladite au moins une vis présentant un filetage et une prise permettant de faire tourner la vis, laquelle prise est située du côté de la vis opposé au filetage, et la vis présentant une surface d'appui orientée en direction du filetage. Lorsque le système d'implant dentaire est complètement assemblé, la surface d'appui de ladite au moins une vis plaque la prothèse sur ledit au moins un implant, et la prothèse, ledit au moins un implant et ladite au moins une vis reposent les uns contre les autres de manière affleurante. L'invention concerne également une vis pour un tel système d'implant dentaire, dans lequel la vis présente une symétrie de révolution jusqu'à la prise et jusqu'au filetage, le diamètre de la vis augmentant à partir du filetage jusqu'à l'extrémité opposée ou le diamètre de la vis augmentant à partir du filetage jusqu'à l'extrémité opposée au moins dans la zone de la surface d'appui et restant par endroits identique, de sorte que de préférence la vis est cylindrique jusqu'à la prise et jusqu'au filetage par rapport à l'axe de la vis ou est conique en direction de son filetage, l'implant présentant une partie cylindrique ou s'ouvrant en cône en direction de la surface d'assemblage avec la prothèse, laquelle partie éloigne un taraudage de l'implant vis-à-vis de la surface d'assemblage avec la prothèse, la surface intérieure de l'implant correspondant à la surface extérieure de la vis, de sorte que ces deux surfaces sont affleurantes lorsque la vis est complètement vissée dans l'implant. L'invention concerne par ailleurs un procédé de fabrication d'une prothèse pour un système d'implant dentaire.
PCT/EP2014/053037 2013-02-26 2014-02-17 Système d'implant dentaire muni d'une vis de forme ajustée WO2014131646A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013101879.3A DE102013101879A1 (de) 2013-02-26 2013-02-26 Dental-Implantat-System mit Schraube in Passform
DE102013101879.3 2013-02-26

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WO2014131646A2 true WO2014131646A2 (fr) 2014-09-04
WO2014131646A3 WO2014131646A3 (fr) 2015-01-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016215427A1 (de) * 2016-08-17 2018-02-22 Holger Zipprich Dental-Prothetiksystem und prothetische Konstruktion zur Verwendung mit einem in den Kieferknochen eines Patienten inserierten Dentalimplantat

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015118286A1 (de) 2015-10-27 2017-04-27 Heraeus Kulzer Gmbh Scanabutment mit Reduzierung des Passungsspiels zum Implantat
CH713805A2 (de) * 2017-05-26 2018-11-30 Denta Vision Gmbh Dentales Implantatsystem.

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