WO2012065848A1 - Système de liaison pour prothèses dentaires - Google Patents

Système de liaison pour prothèses dentaires Download PDF

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Publication number
WO2012065848A1
WO2012065848A1 PCT/EP2011/069302 EP2011069302W WO2012065848A1 WO 2012065848 A1 WO2012065848 A1 WO 2012065848A1 EP 2011069302 W EP2011069302 W EP 2011069302W WO 2012065848 A1 WO2012065848 A1 WO 2012065848A1
Authority
WO
WIPO (PCT)
Prior art keywords
axis
holding
connection system
counter
fastening
Prior art date
Application number
PCT/EP2011/069302
Other languages
German (de)
English (en)
Inventor
Wilfried BÖHM
Jörg LERMER
Stephan Adler
Roland Benz
Original Assignee
Bredent Gmbh & Co. Kg
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 Bredent Gmbh & Co. Kg filed Critical Bredent Gmbh & Co. Kg
Publication of WO2012065848A1 publication Critical patent/WO2012065848A1/fr

Links

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

Definitions

  • Dentures which replace several or all teeth of a jaw can preferably be held on implants anchored in the jawbone, with abutments advantageously connected to the implants forming the jaw-side holding elements of the connection system.
  • On the side of the prosthesis are anchored in these counter-elements, which are each individually assigned to the abutments and shaped to fit them.
  • a plurality of holding elements are arranged at a distance from a prosthesis.
  • a push button system has proven itself as a connection system, in which at the abutments a tangible support structure in the form of z. B. a ball head or an annular bead is formed, via which a anchored in the prosthesis cap can be snapped with a resilient element.
  • connection systems are also used, in which a fastening element can be displaced transversely to the joining direction in order to firmly connect the holding element and counter element to one another.
  • a connection system is known, for example, from the company bredent medical GmbH & Co. KG and contains so-called UVE connection elements, which contain an abutment as a holding element, a cap as a counter element and a screw as a fastening element. Abutment and cap have a connecting direction determining first axis.
  • a transversely directed to the first axis and conically tapered recess is formed, in which when placed on the abutment cap guided in a thread of the cap fastening screw transverse to the first axis with a conically tapered screw tip is screwed.
  • the screw tip rests against a bearing surface inclined to the screw axis and against the first axis, at the edge of the conical recess, so that when the fastening screw is tightened the cap is braced against the abutment in the direction of the first axis.
  • the screw is accessible from the tongue side of the jaw for the attachment of a screwing tool.
  • the invention has for its object to further improve the latter connection system for prostheses.
  • the invention is described in independent claim 1.
  • the dependent claims contain advantageous refinements and developments.
  • the dentist and the dental technician Due to the bracing of the counter element against the holding element in several different angular orientations, the dentist and the dental technician has an additional degree of freedom in the preparation of the prosthesis. Both the handling of the screw connection by the dentist and the anchoring of the counter element in the prosthesis and the wearing comfort for the patient can be advantageously taken into account.
  • the several possible angular orientations advantageously cover an angular range of at least 10 °, in particular at least 20 ° about the first axis.
  • the plurality of angular orientations form an angular range with continuously variable selectable angular orientation.
  • the plurality of different angular orientations are preferably made possible by a special design of a holding structure of the holding element at fixed within the counter-element orientation of the fastener.
  • the holding structure of the holding element comprises a about the first axis over said angular range rotationally symmetrical about the first axis and inclined against this circular ring segment surface, in particular in the form of a section of a lateral surface of a circular cone about the first axis.
  • the circular ring segment surface is preferably supplemented over the angular range of practice-relevant angular orientations to form a circular ring surface around the first axis.
  • the annular surface can be designed in particular as an edge surface of an annular groove in an outer surface of the retaining element.
  • the circular ring surface may be interrupted, in particular in the case of angled abutments, through an opening through which a screw for fastening the abutment to an implant is inserted, but Such an opening typically points along the mandibular arch and therefore lies outside the practice-relevant angle range for a tongue-side accessible fastening element.
  • a screw as a connecting element, preferably a so-called grub screw, which can be screwed into a guide thread of the counter-element without protruding screw head.
  • the holding element may be formed in the retaining element in addition a threaded receptacle about the first axis, so that the holding element can also be used for the type of attachment described by the occlusal surface.
  • different types of attachment can also occur mixed.
  • FIG. 1 shows a jaw with a prosthesis, a detail at a connection point, FIG. 3 components of a connecting element, FIG.
  • connection point 4 is a side view of a connection point
  • FIG. 5 shows another view of the crossing point
  • Fig. 6 shows another embodiment of a connecting element.
  • Fig. 1 shows in a view of an indicated mandibular bow Kl in one half a patch on the jaw Kl prosthesis PR as a full denture, of which only half is shown.
  • the invention is not limited to use in full dentures.
  • the jawbone of the jaw Kl implants are anchored in the jawbone at four connection points and abutments AB are connected to the implants.
  • the view of the abutments AB is free.
  • the attached on the jaw Kl and supported on the connection system on the jaw and held prosthesis PR is outlined in which counter-elements GE anchored to holding elements of the abutment AB, in particular in a plastic material of the prosthesis PR are embedded.
  • FIG. 2 a detail of Fig. 1 is shown enlarged. It is indicated with an interrupted line in a conventional manner obliquely anchored in the jaw bone implant IM, on which an angled abutment is attached.
  • a holding structure of an abutment connected to the implant IM has a first axis A1, which is perpendicular to the plane of the drawing of FIGS. 1 and 2.
  • the first axes A1 of all abutments are aligned substantially parallel to one another and determine a joining direction in which the counter-elements GE anchored in the prosthesis can be placed onto the holding elements of the abutments AB or for removing the prosthesis from the prosthesis PR to connect the prosthesis PR with the jaw these are solvable.
  • Deviations from the exact parallelism of the first axes of all holding elements are permitted by the design of the holding elements and the counter-elements.
  • the counter element GE shown in FIG. 2 is continued laterally from the first axis A1, along which the joining of the holding element and the counter element takes place, to the tongue-side edge of the prosthesis.
  • the surface GA facing away from the first axis A1 and facing the tongue space of the counterpart element is advantageously designed in alignment with laterally continued surfaces of the prosthesis.
  • a fastening element BE is arranged in the counter element GE, which serves for fastening the counter element GE on the retaining element of an abutment connected to the implant IM. With IV and V two viewing directions corresponding to Fig. 4 and Fig. 5 are designated.
  • a contour of a counter-element is shown with a broken line and designated GE2.
  • the contour GE2 illustrates an alternative orientation of a counter element relative to the abutment for aligning the solid line GE, wherein the orientation designated GE2 corresponds to a pivoting of the counter element GE by an angle DW about the first axis A1.
  • the counter element GE is anchored in the material of the prosthesis with fixed orientation.
  • the broken line contour GE2 merely illustrates a different orientation of a counter element that is selectable by the dentist or dental technician during production of the prosthesis relative to the abutment or support element of the abutment fixed in the jaw by the implant.
  • at least two orientations are possible, which differ from one another by an angle DW of at least 10 ° about the first axis A1.
  • Fig. 3 shows components of a preferred embodiment of a connecting element.
  • a connection element contains in particular an abutment AB, a cap-shaped counter element GE and a fastening screw BS as a fastener.
  • the counter element GE and the abutment AB have a common first axis, along which the counter element GE can be placed on a structure HE of the abutment as a holding element.
  • the abutment can also be designed in several parts, in particular with a first part forming the holding element and an implant-side second part.
  • the counter element GE is in the example sketched outlined substantially identical to a counter element from the above-mentioned connection system with the UVE connection element.
  • the counter element has an anchor structure AK, by means of which the counter element GE can be held positively in a material of the prosthesis and on which even further elements of the prosthesis can be held.
  • the connection of the counter element GE with the prosthesis is well known from the prior art, so that reference is made to the known embodiments.
  • a thread guide FG is formed, which is introduced in a radially directed away from the first axis A1 extension of the body of the counter element and extends into the interior of the counter element GE GE.
  • An outer surface GA facing away from the first axis A1 on the extension advantageously forms, after embedding the counter element GE in the prosthesis, a part of the outer surface of the prosthesis which is aligned with the surface of the surrounding material of the prosthesis.
  • the counter element GE is preferably metallic and may in particular consist of particularly biocompatible titanium.
  • a strongly angulated version is selected in the example according to FIG. 3, which is used in particular on implants anchored at an angle in the jawbone in the molar region.
  • the abutment is with a second end E2, which is formed longitudinally about a second axis A2, insertable into a recess of an implant and is typically fastened to the implant by means of an implant screw directed in the direction of the second axis A2.
  • the screw head of such a fastening screw is accessible via an opening SU in the implant for a screwing tool.
  • the holding element HE forms a structure of the abutment in the direction of the first axis A1, wherein the jaw facing away from the end of the abutment or the holding element structure is denoted by E1.
  • the holding element HE has in the preferred embodiment outlined a shape with an envelope in the form of a circular truncated cone with a side surface AA.
  • an annular groove RN extending annularly about the first axis A1 is formed which is bounded at the top by an annular surface RF inclined obliquely against the first axis A1.
  • the interior of the counter element GE is formed substantially complementary to the truncated cone envelope of the holding element HE and covers the holding element cap-shaped.
  • the lower edge UK of the counter element rests on the annular surface SA of the abutment AB.
  • a broken line shows an implant IM extending away from the abutment in the direction of the second axis A2 around the jaw-side end E2 of the abutment.
  • structures within the abutment are indicated, which in particular comprise a screw head guide SF and an internal thread IG.
  • the screw head guide SF extending in the direction of the second axis A2 accommodates the screw head of a fastening screw which serves for fastening the abutment to the implant and allows the attachment of a screwing tool to the screw head of this fastening screw via an opening SU.
  • the opening SU Through the opening SU, the rotational symmetry of the holding element HS is interrupted on one side, but this is irrelevant for the attachment according to the connection system according to the invention, since in practice relevant angular orientations of the counter element, the fastening screw BS does not occur in the region of the opening SU.
  • the internal thread IG about the first axis A1 forms a threaded receptacle, by means of which the connection described at the outset and known from the prior art by means of a fastening screw leading through the occlusal plane of the prosthesis can be used as an alternative to the connection according to the invention.
  • tion system would be possible, if this is necessary in an individual case, in which case one and the same connection element can serve for different types of attachment.
  • 5 shows a view of the preferred embodiment of a connecting element of the connection system according to the invention in the viewing direction designated V in FIG. 2 with the counter element GE cut open.
  • the fastening screw BS is rotatably guided in the guide thread FG of the counter-element about a fastening direction BR and can be displaced by rotation about its screw axis along the fastening direction BR.
  • the conically shaped screw tip KS of the fastening screw lays against the annular surface RF which delimits the annular groove RN upwards, with only a small contact surface acting as a contact surface between the conical tip KS and the annular surface RF.
  • the orientation of the abutment surface is represented by the plane designated AE, which is inclined towards the first axis A1 and against the fastening direction BR and lies between these two directions.
  • ring surface RF and screw tip KS are shown as sections of conical surface areas with straight generatrices. Ring surface RF and / or screw tip KS can also be curved with curved generatrices.
  • the counter element When applying the conical screw tip KS to the annular surface RF and further tightening the mounting screw BS, the counter element is pressed relative to the support structure in the axial direction A1 with its lower edge UK to the supporting ring surface SA of the abutment and in this way firmly with the abutment and the retaining element braced.
  • the fastening screw in the guide thread FG can be considered to be self-locking. As far as this does not seem sufficient, the thread can also with be provided an additional threadlocking material.
  • the fastening screw is preferably designed as a headless threaded pin, also referred to as a grub screw, and essentially completely screwed into the guide thread FG of the counter element GE, without appreciably overhanging the outer surface GA.
  • the opening of the guide thread FG and / or the outwardly facing end of the fastening screw BS can be additionally covered with a plastic, curable material, which can be removed to loosen the screw again.
  • FIG. 3 to FIG. 5 While in the preferred embodiment of a connecting element according to FIG. 3 to FIG. 5 a screw is provided as fastening element engaging with the annular surface RF, other fastening elements are also provided between fastening element via an abutment surface inclined relative to the first axis A1 and holding structure cause a tension of the counter element in the direction of the first axis A1 on the holding element can be used.
  • 6 shows an example in which a sleeve HU is screwed into a guide thread of the mating element, within which a locking element RE is pressed in the direction of movement on the retaining structure under the action of a spring FE and engages with the annular surface RF, to clamp the counter element in the manner described against the annular surface SA of the abutment.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & 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)
  • Dental Prosthetics (AREA)

Abstract

La présente invention a pour objet de relier une prothèse dentaire à une mâchoire par l'intermédiaire de plusieurs piliers retenus sur des implants, en tant qu'éléments de retenue, et de plusieurs éléments complémentaires correspondants dans la prothèse. A cet effet, elle concerne un mode de réalisation des éléments de liaison constitués par des éléments de retenue et des éléments complémentaire, selon lequel un élément complémentaire peut être monté sur l'élément de retenue selon diverses orientations autour d'un premier axe de l'élément de retenue déterminant la direction de liaison, et peut être serré axialement contre ledit élément de liaison.
PCT/EP2011/069302 2010-11-18 2011-11-03 Système de liaison pour prothèses dentaires WO2012065848A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010060641.3A DE102010060641B4 (de) 2010-11-18 2010-11-18 Verbindungssystem für Zahnprothesen
DE102010060641.3 2010-11-18

Publications (1)

Publication Number Publication Date
WO2012065848A1 true WO2012065848A1 (fr) 2012-05-24

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Application Number Title Priority Date Filing Date
PCT/EP2011/069302 WO2012065848A1 (fr) 2010-11-18 2011-11-03 Système de liaison pour prothèses dentaires

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DE (1) DE102010060641B4 (fr)
WO (1) WO2012065848A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014124856A1 (fr) * 2013-02-15 2014-08-21 Bredent Gmbh & Co. Kg Agencement et système de prothèse dentaire
WO2017141087A1 (fr) * 2016-02-18 2017-08-24 Kasem Yahya Transferts angulaires pour implants dentaires

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3524205A1 (fr) * 2018-02-07 2019-08-14 Straumann Holding AG Douille améliorée pour tige de fixation pour prothèses dentaires et procédé de fabrication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9202656U1 (de) * 1992-02-29 1992-04-23 ZL Microdent-Attachment GmbH, 5805 Breckerfeld Imlantataufbau
US5667384A (en) * 1994-06-03 1997-09-16 Institut Straumann Ag Device for forming a dental prosthesis and method of manufacturing such a device
WO2001047429A1 (fr) * 1999-12-24 2001-07-05 Unger Heinz Dieter Corps d'implant

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Publication number Priority date Publication date Assignee Title
DE29514042U1 (de) * 1995-09-01 1997-01-09 Unger, Heinz-Dieter, Dr.med.dent., 49080 Osnabrück Anker für Implantatkörper und Richtvorrichtung zu deren Ausrichtung
DE29723604U1 (de) * 1997-07-23 1998-11-19 Degussa Ag, 60311 Frankfurt Dentalkonstruktion
DE19903482A1 (de) * 1999-01-29 2000-08-03 Unger Heinz Dieter Aufbau einer prothetischen Suprakonstruktion
WO2005115270A1 (fr) * 2004-05-28 2005-12-08 Brain Base Corporation Structure de fixation de prothese et procede de fixation de prothese
WO2008157137A1 (fr) * 2007-06-14 2008-12-24 Southern Implants, Inc. Système d'implant dentaire destiné à être utilisé avec des prothèses non alignées coaxialement
US7632095B2 (en) * 2007-08-13 2009-12-15 Biomet 3I, Inc. Method for forming a dental prosthesis

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9202656U1 (de) * 1992-02-29 1992-04-23 ZL Microdent-Attachment GmbH, 5805 Breckerfeld Imlantataufbau
US5667384A (en) * 1994-06-03 1997-09-16 Institut Straumann Ag Device for forming a dental prosthesis and method of manufacturing such a device
WO2001047429A1 (fr) * 1999-12-24 2001-07-05 Unger Heinz Dieter Corps d'implant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014124856A1 (fr) * 2013-02-15 2014-08-21 Bredent Gmbh & Co. Kg Agencement et système de prothèse dentaire
JP2016512974A (ja) * 2013-02-15 2016-05-12 ブレデント ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフトｂｒｅｄｅｎｔ ＧｍｂＨ ＆ Ｃｏ． ＫＧ 歯プロテーゼアッセンブリおよび歯プロテーゼシステム
US9907629B2 (en) 2013-02-15 2018-03-06 Bredent Gmbh & Co. Kg Dental prosthetic arrangement and dental prosthetic system
WO2017141087A1 (fr) * 2016-02-18 2017-08-24 Kasem Yahya Transferts angulaires pour implants dentaires
US10603139B2 (en) 2016-02-18 2020-03-31 Yahya Kasem Angulated transfers for dental implants

Also Published As

Publication number Publication date
DE102010060641A1 (de) 2012-05-24
DE102010060641B4 (de) 2018-07-05

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