WO2004075769A2 - Set comprising a dental implant and a tool for installing said implant - Google Patents

Set comprising a dental implant and a tool for installing said implant Download PDF

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Publication number
WO2004075769A2
WO2004075769A2 PCT/FR2004/000424 FR2004000424W WO2004075769A2 WO 2004075769 A2 WO2004075769 A2 WO 2004075769A2 FR 2004000424 W FR2004000424 W FR 2004000424W WO 2004075769 A2 WO2004075769 A2 WO 2004075769A2
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WO
WIPO (PCT)
Prior art keywords
implant
intended
pawn
cap
shaped part
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Application number
PCT/FR2004/000424
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French (fr)
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WO2004075769A3 (en
Inventor
Stanislas De Raulin
Original Assignee
Stanislas De Raulin
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Publication date
Application filed by Stanislas De Raulin filed Critical Stanislas De Raulin
Publication of WO2004075769A2 publication Critical patent/WO2004075769A2/en
Publication of WO2004075769A3 publication Critical patent/WO2004075769A3/en

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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
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A61C8/0022—Self-screwing
    • 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
    • A61C8/0075—Implant heads specially designed for receiving an upper structure
    • 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
    • A61C8/0089—Implanting tools or instruments

Definitions

  • the present invention relates to a set comprising a dental implant intended for anchoring to one jaw one or more prosthetic teeth, and a tool for positioning this implant in this jaw.
  • a two-piece implant comprising an anchor piece intended to be fixed to the jaw and a tooth mounting piece, intended to be fixed to the piece d anchor.
  • This anchoring part is in the form of a rod provided with a thread allowing its support in the jaw bone, and includes a proximal tapped hole.
  • the mounting piece for its part, includes a tooth receiving pin and a threaded rod intended to be screwed into the threaded hole proximal to the anchoring piece.
  • the anchoring piece is put in place first, with a cover screw engaged in the proximal tapped hole; the mounting part is put in place in a second step, after removal of this covering screw then screwing of the threaded rod which it comprises in the tapped hole of the anchoring part.
  • This technique has the drawbacks of requiring an implantation in two stages, and of inducing a risk of untimely unscrewing of the cover screw or, on the contrary, of blocking of this screw in the tapped hole of the anchoring piece. Unintentional unscrewing of the cover screw can lead to infection and blocking this screw runs the risk of unscrewing the implant when it is necessary to force on this cover screw to unlock it, as well as a risk of breakage of this screw during this forcing.
  • bone growth may have occurred above the cover screw between the two stages of implantation; the presence of this bone can cause difficulties in setting up the mounting piece, and the elimination of this bone causes pain to the patient.
  • the verification of the correct positioning of the mounting part on the anchoring part involves an X-ray check, which causes undesirable additional irradiation.
  • the existence of the joint between the anchor and the mounting part, which is at the level of the bone can be the cause of an infection.
  • an implant in one piece, comprising a part intended to be anchored in the bone by screwing and a mounting part of the tooth, this mounting part, in the form of a pawn, being provided with gripping means for taking the support of a fitting tool of the screwdriver type, for screwing the implant into the jaw.
  • the present invention aims to remedy the aforementioned drawbacks.
  • the assembly which it relates to comprises, in a manner known per se: - a monobloc implant comprising a threaded part intended to be anchored in the jaw by screwing, a pawn-shaped part of frustoconical shape and of circular section, and means wedging for the coming of this implant in engagement with a positioning tool, and
  • This installation tool which includes wedging means complementary to those of the implant.
  • the implant wedging means comprise a series of cavities arranged on a circle concentric with said pawn-shaped part; and - the setting means of the setting tool comprise a series of shaped projections and arranged to be engaged in said cavities.
  • the pawn-shaped part does not undergo the screwing torque necessary for the implantation of the implant and can therefore present an optimized shape for the sole function of mounting the prosthetic tooth or a bridge.
  • said pawn-shaped part comprises a groove arranged in its side wall
  • the fitting tool comprises a projection arranged in the housing intended to receive this pawn-shaped part, this projection being suitable for being snapped in reversibly. in this gorge.
  • the implant can thus be mounted reversibly on the delivery tool, which further facilitates the positioning of the implant.
  • the groove of the pawn-shaped part can also be used to subsequently mount the prosthetic tooth on the implant.
  • said cavities of the implant are arranged so as to be regularly distributed over the circle on which they are located.
  • the mounting of the implant on the delivery tool can thus be carried out according to a plurality of possible angular positions.
  • the assembly comprises at least one piece 20 in the form of a cap, suitable for coming over said pawn-shaped part 7, which has a cavity 21 for receiving the pawn-shaped part 7 of form complementary to that of the pin 7.
  • This part 20 being intended to receive the prosthesis.
  • the tax on the piece 20 in the form of a cap forms a non-zero angle with the axis of generation of the lateral face of revolution of the cavity 21.
  • This cap-shaped part can thus be engaged on said pawn-shaped part and be fixed to the implant in a determined angular position, so as to replace the pawn-shaped part for mounting a bridge; this angular position is that making it possible to correct, if necessary, the orientation of the pawn-shaped part when the corresponding implant is placed while being inclined relative to the position which would have been optimal for mounting the bridge.
  • the assembly according to the invention may comprise several parts in the form of a cap, the axes of the said cavities forming different angles, from one part to another, with the axes of generation of the lateral faces of these parts, these different angles being adapted to the different inclinations to be corrected, which an implant may present.
  • Each cap-shaped part may have a series of projections shaped and arranged to be engaged in said cavities of an implant when the cap-shaped part is placed on this implant. The angular positioning of a cap-shaped part on an implant is thus carried out in a reliable and simple manner.
  • the assembly according to the invention may also comprise several pieces 30 in the form of caps, connected to each other by bridges of material 26. When an implant is placed without deviation, this adaptation piece forms an adapter for reception of the bridge.
  • the invention also relates to each implant, the installation tool, each piece in the form of the aforementioned cap or adaptation piece, taken individually.
  • the invention also relates to a prosthesis, which has a transverse hole 203 for the engagement of a key 204 intended to also be engaged in the groove 11 of the implant pin and / or the groove 24 of the cap and / or at at least one finger 205 intended to be engaged in a cavity 10 of the implant.
  • a key 204 intended to also be engaged in the groove 11 of the implant pin and / or the groove 24 of the cap and / or at at least one finger 205 intended to be engaged in a cavity 10 of the implant.
  • FIG. 1 is a perspective view of the implant and part of the delivery tool it includes;
  • Figure 2 is a view of the implant after placement in a jaw and mounting of a prosthetic tooth;
  • Figure 3 is a view of a second prosthetic tooth mounted on an implant;
  • FIG. 4 is a view of the implant and of a piece forming a cap, which it comprises, in longitudinal section, and
  • FIG. 5 is a view of two implants placed in a jaw, in the case of placing in place of a "bridge", that is to say a bridge used to receive two or more adjacent prosthetic teeth.
  • FIG. 1 represents an assembly comprising an implant 1 for anchoring a prosthetic tooth in a jaw and a tool 2 for placing this implant.
  • the implant 1 comprises, from its distal end towards its proximal end, a threaded part 3 of cylindrical shape, intended to be anchored in the bone by screwing, a smooth part 4 intended to be, after placement, at the level of the gingival mucosa, a flared part 5 forming a support flange against this mucosa, a flat proximal face 6, and a pin 7 for mounting the tooth.
  • a series of twelve blind holes 10 is arranged in the flared part 5, starting from the face 6, these holes 10 being arranged on a circle concentric with the pin 7 and regularly distributed over this circle.
  • the pin 7 has a groove 11, arranged substantially at its mid-height.
  • the fitting tool 2 comprises a part 15 in the shape of a bell, shaped to come cap, in an adjusted manner, the pin 7 and the ⁇ face.
  • the bell 15 At its distal circular edge, the bell 15 comprises a series of rods 16 projecting from this edge parallel to the axis of this bell
  • These rods 16 are dimensioned and arranged so that they can be engaged in an adjusted fashion in the holes 10 of the implant 1 when the pin 7 is engaged in the housing 17 delimited by the bell 15.
  • This housing includes a projection (not visible in the figures), capable of being snapped reversibly into the groove 11.
  • the implant 1 is perfectly wedged and maintained with respect to tool 2, which makes it easier to place this implant 1 in the jaw bone.
  • FIG. 2 shows this positioning, the threaded part 3 being anchored in the bone 100 by screwing, the smooth part 4 being at the level of the gingival mucosa 101 with the support of the flared part 5 against this mucosa, and the pin 7 receiving the prosthetic tooth 102.
  • This tooth 102 is fixed to this pin 107 by means of an appropriate synthetic cement 103.
  • FIG. 3 shows another prosthetic tooth 202 comprising a transverse hole opening out in one of its faces, extending by a groove 203 formed in the cavity 204 intended to come over the pin of the implant.
  • the grooves 11 of the implant and 203 of the prosthesis delimit an opening for the engagement of a key 204.
  • This prosthesis is therefore locked in translation on the pin and removably by this key 204.
  • the prosthesis comprises, at its end located on the side of the implant, an axial finger 205 intended to penetrate a blind hole 10 of the implant to ensure the rotation of the prosthesis.
  • FIG. 4 shows an implant 1 identical to that which has just been described and a part 20 in the form of a cap suitable for covering the pin 7 and the face 6.
  • This part 20 has a cavity 21 for receiving the pin adjusted 7, in which is arranged a projection 22 adapted to be engaged in the groove 11, and a lateral face 23 of revolution.
  • the generation axis of the face 23 forms, with the axis of the cavity 21, a non-zero angle, of the order of 5 ° in the example shown.
  • the part 20 also has, at its face 23, a groove 24 allowing the retention of a bridge, as described below.
  • the assembly according to the invention comprises a plurality of such parts 20, having cavities 21 whose axes form, from one part 20 to another, different angles with said generation axes.
  • FIG. 5 shows two implants 1 as mentioned above, placed in two consecutive locations of a jaw to receive a bridge 25, that is to say a part forming a bridge 26 for mounting two adjacent teeth 102 and two parts 27 for connection to implants 1.
  • This implant 1 then receives a part 20 whose axis of the cavity 21 forms an angle with the axis of the wall 23 such that, after assembly, this axis of the wall 23 is parallel to the direction of implantation which would have been adequate if implant 1 had been inserted without deviation.
  • the other implant 1 is in turn correctly positioned and receives a part 30 identical to a part 20, except that the axis of its cavity 21 forms a zero angle with the axis of generation of its face 23.
  • the invention brings a decisive improvement to the prior art, by providing a assembly making it possible to ensure a perfect connection in rotation between the implant and the positioning tool, and allowing to easily and quickly rectify the orientation of the pin 7 of an implant placed in a slightly deflected manner, thus facilitating the positioning of a bridge.

Abstract

The set comprises a monobloc implant (1) with a threaded section (3) for anchoring in the jaw (100) by screwing, a section (7) in the form of a stud and engagement means (10) for bringing the implant (1) into engagement with a placement tool (2) and said placement tool (2), comprising engagement means (16) complementary to those of the implant (1). According to the invention, the engagement means on the implant (1) comprise a series of holes (10) arranged around a circle concentric to said section (7) in the form of a stud and the engagement means on the placement tool (2) comprise a series of projections (16) corresponding to and arranged to engage in said holes (10).

Description

ENSEMBLE COMPRENANT UN IMPLANT DENTAIRE ET UN OUTIL DE MISE EN PLACE DE CET IMPLANT ASSEMBLY COMPRISING A DENTAL IMPLANT AND A TOOL FOR PLACING THE IMPLANT
La présente invention concerne ensemble comprenant un implant dentaire destiné à l'ancrage à une mâchoire d'une ou plusieurs dents prothétiques, et un outil de mise en place de cet implant dans cette mâchoire.The present invention relates to a set comprising a dental implant intended for anchoring to one jaw one or more prosthetic teeth, and a tool for positioning this implant in this jaw.
Pour mettre en place une dent prothétique, il est courant d'utiliser un implant en deux pièces, comprenant une pièce d'ancrage destinée à être fixée à la mâchoire et une pièce de montage de la dent, destinée à être fixée à la pièce d'ancrage. Cette pièce d'ancrage se présente sous la forme d'une tige pourvue d'un filetage permettant sa prise d'appui dans l'os de la mâchoire, et comprend un trou taraudé proximal. La pièce de montage comprend quant à elle un pion de réception de la dent et une tige filetée destinée à être vissée dans le trou taraudé proximal de la pièce d'ancrage. La pièce d'ancrage est mise en place dans un premier temps, avec une vis de recouvrement engagée dans le trou taraudé proximal ; la pièce de montage est mise en place dans un deuxième temps, après retrait de cette vis de recouvrement puis vissage de la tige filetée qu'elle comprend dans le trou taraudé de la pièce d'ancrage.To place a prosthetic tooth, it is common to use a two-piece implant, comprising an anchor piece intended to be fixed to the jaw and a tooth mounting piece, intended to be fixed to the piece d anchor. This anchoring part is in the form of a rod provided with a thread allowing its support in the jaw bone, and includes a proximal tapped hole. The mounting piece, for its part, includes a tooth receiving pin and a threaded rod intended to be screwed into the threaded hole proximal to the anchoring piece. The anchoring piece is put in place first, with a cover screw engaged in the proximal tapped hole; the mounting part is put in place in a second step, after removal of this covering screw then screwing of the threaded rod which it comprises in the tapped hole of the anchoring part.
Cette technique présente les inconvénients d'obliger à une implantation en deux temps, et d'induire un risque de dévissage intempestif de la vis de recouvrement ou, au contraire, de blocage de cette vis dans le trou taraudé de la pièce d'ancrage. Le dévissage intempestif de la vis de recouvrement peut conduire à une infection et le blocage de cette vis fait courir le risque d'un dévissage de l'implant lorsqu'il est nécessaire de forcer sur cette vis de recouvrement pour la débloquer, ainsi qu'un risque de cassure de cette vis lors de ce forçage.This technique has the drawbacks of requiring an implantation in two stages, and of inducing a risk of untimely unscrewing of the cover screw or, on the contrary, of blocking of this screw in the tapped hole of the anchoring piece. Unintentional unscrewing of the cover screw can lead to infection and blocking this screw runs the risk of unscrewing the implant when it is necessary to force on this cover screw to unlock it, as well as a risk of breakage of this screw during this forcing.
Il existe également un risque de fracture de la pièce d'ancrage, compte tenu de la relative fragilité que présente cette pièce au niveau proximal, du fait de la présence du trou taraudé proximal précité.There is also a risk of fracture of the anchoring piece, given the relative fragility that this piece presents at the proximal level, due to the presence of the aforementioned proximal tapped hole.
De plus, une croissance osseuse peut s'être produite au-dessus de la vis de recouvrement entre les deux temps de l'implantation ; la présence de cet os peut entraîner des difficultés pour mettre en place la pièce de montage, et l'élimination de cet os cause des douleurs au patient.In addition, bone growth may have occurred above the cover screw between the two stages of implantation; the presence of this bone can cause difficulties in setting up the mounting piece, and the elimination of this bone causes pain to the patient.
La vérification de la bonne mise en place de la pièce de montage sur la pièce d'ancrage implique un contrôle par radiographie, qui occasionne une irradiation supplémentaire non souhaitable. En outre, l'existence du joint entre la pièce d'ancrage et la pièce de montage, qui se trouve au niveau de l'os, peut être à l'origine d'une infection.The verification of the correct positioning of the mounting part on the anchoring part involves an X-ray check, which causes undesirable additional irradiation. In addition, the existence of the joint between the anchor and the mounting part, which is at the level of the bone, can be the cause of an infection.
Selon une autre technique, il est connu de prévoir un implant en une seule pièce, comprenant une partie destinée à être ancrée dans l'os par vissage et une partie de montage de la dent, cette partie de montage, en forme de pion, étant pourvue de moyens de prise pour la prise d'appui d'un outil de pose du genre tournevis, en vue du vissage de l'implant dans la mâchoire.According to another technique, it is known to provide an implant in one piece, comprising a part intended to be anchored in the bone by screwing and a mounting part of the tooth, this mounting part, in the form of a pawn, being provided with gripping means for taking the support of a fitting tool of the screwdriver type, for screwing the implant into the jaw.
Ces implants ont pour inconvénient de ne pas être toujours très aisés à mettre en place, la parfaite liaison en rotation de l'implant et de l'outil de pose n'étant pas toujours assurée.The disadvantage of these implants is that they are not always very easy to put in place, since the perfect connection in rotation between the implant and the delivery tool is not always ensured.
De plus, lors de la mise en place d'un "bridge", c'est-à-dire d'un pont reliant plusieurs implants pour le montage de plusieurs dents prothétiques, il existe le risque que les implants ne soient pas tous disposés de manière parfaitement parallèle. Les implants existants ont pour inconvénient de ne pas permettre de rectifier facilement et rapidement l'orientation du pion de montage d'un implant mis en place de manière légèrement déviée, ce qui pose des problèmes lors de la mise en place du bridge.In addition, when installing a "bridge", that is to say a bridge connecting several implants for the mounting of several prosthetic teeth, there is the risk that the implants are not all arranged perfectly parallel. The existing implants have the disadvantage of not making it possible to easily and quickly correct the orientation of the mounting pin of an implant placed in a slightly deflected manner, which poses problems during the positioning of the bridge.
La présente invention vise à remédier aux inconvénients précités.The present invention aims to remedy the aforementioned drawbacks.
L'ensemble qu'elle concerne comprend, de manière connue en soi : - un implant monobloc comprenant une partie filetée destinée à être ancrée dans la mâchoire par vissage, une partie en forme de pion de forme tronconique et de section circulaire, et des moyens de calage pour la venue de cet implant en prise avec un outil de pose, etThe assembly which it relates to comprises, in a manner known per se: - a monobloc implant comprising a threaded part intended to be anchored in the jaw by screwing, a pawn-shaped part of frustoconical shape and of circular section, and means wedging for the coming of this implant in engagement with a positioning tool, and
- cet outil de pose, qui comprend des moyens de calage complémentaires de ceux de l'implant.- This installation tool, which includes wedging means complementary to those of the implant.
Selon l'invention,According to the invention,
- les moyens de calage de l'implant comprennent une série de cavités disposées sur un cercle concentrique à ladite partie en forme de pion ; et - les moyens de calage de l'outil de pose comprennent une série de saillies conformées et disposées pour être engagées dans lesdites cavités.- The implant wedging means comprise a series of cavities arranged on a circle concentric with said pawn-shaped part; and - the setting means of the setting tool comprise a series of shaped projections and arranged to be engaged in said cavities.
Ces saillies et cavités permettent de parfaitement caler l'implant par rapport à l'outil de pose, et permettent donc une mise en place facilitée de l'implant dans une mâchoire. La partie en forme de pion ne subit pas le couple de vissage nécessaire à la mise en place de l'implant et peut dès alors présenter une forme optimisée pour la seule fonction de montage de la dent prothétique ou d'un bridge.These protrusions and cavities make it possible to perfectly wedge the implant with respect to the positioning tool, and therefore allow easier positioning of the implant in a jaw. The pawn-shaped part does not undergo the screwing torque necessary for the implantation of the implant and can therefore present an optimized shape for the sole function of mounting the prosthetic tooth or a bridge.
Avantageusement, ladite partie en forme de pion comprend une gorge aménagée dans sa paroi latérale, et l'outil de pose comprend une saillie aménagée dans le logement destiné à recevoir cette partie en forme de pion, cette saillie étant propre à être encliquetée de manière réversible dans cette gorge.Advantageously, said pawn-shaped part comprises a groove arranged in its side wall, and the fitting tool comprises a projection arranged in the housing intended to receive this pawn-shaped part, this projection being suitable for being snapped in reversibly. in this gorge.
L'implant peut ainsi être monté de manière réversible sur l'outil de pose, ce qui facilite encore la mise en place de l'implant. La gorge de la partie en forme de pion peut en outre être mise à profit pour réaliser ultérieurement le montage de la dent prothétique sur l'implant.The implant can thus be mounted reversibly on the delivery tool, which further facilitates the positioning of the implant. The groove of the pawn-shaped part can also be used to subsequently mount the prosthetic tooth on the implant.
De préférence, lesdites cavités de l'implant sont aménagées de manière à être régulièrement réparties sur le cercle sur lequel elles se trouvent.Preferably, said cavities of the implant are arranged so as to be regularly distributed over the circle on which they are located.
Le montage de l'implant sur l'outil de pose peut ainsi être réalisé selon une pluralité de positions angulaires possibles.The mounting of the implant on the delivery tool can thus be carried out according to a plurality of possible angular positions.
Suivant une forme d'exécution, l'ensemble comprend au moins une pièce 20 en forme de capuchon, propre à venir coiffer ladite partie en forme de pion 7, qui présente une cavité 21 de réception de la partie en forme de pion 7 de forme complémentaire de celle du pion 7. Cette pièce 20 étant destinée à recevoir la prothèse.According to one embodiment, the assembly comprises at least one piece 20 in the form of a cap, suitable for coming over said pawn-shaped part 7, which has a cavity 21 for receiving the pawn-shaped part 7 of form complementary to that of the pin 7. This part 20 being intended to receive the prosthesis.
Avantageusement, Taxe de la pièce 20 en forme de capuchon forme un angle non nul avec l'axe de génération de la face latérale de révolution de la cavité 21.Advantageously, the tax on the piece 20 in the form of a cap forms a non-zero angle with the axis of generation of the lateral face of revolution of the cavity 21.
Cette pièce en forme de capuchon peut ainsi être engagée sur ladite partie en forme de pion et être fixée à l'implant dans une position angulaire déterminée, de manière à se substituer à la partie en forme de pion pour le montage d'un bridge ; cette position angulaire est celle permettant de rectifier au mieux, s'il y a lieu, l'orientation de la partie en forme de pion lorsque l'implant correspondant est mis en place en étant incliné par rapport à la position qui aurait été optimale pour le montage du bridge.This cap-shaped part can thus be engaged on said pawn-shaped part and be fixed to the implant in a determined angular position, so as to replace the pawn-shaped part for mounting a bridge; this angular position is that making it possible to correct, if necessary, the orientation of the pawn-shaped part when the corresponding implant is placed while being inclined relative to the position which would have been optimal for mounting the bridge.
L'ensemble selon l'invention peut comprendre plusieurs pièces en forme de capuchon, dont les axes desdites cavités forment des angles différents, d'une pièce à l'autre, avec les axes de génération des faces latérales de ces pièces, ces différents angles étant adaptés aux différentes inclinaisons à corriger, qu'un implant peut présenter. Chaque pièce en forme de capuchon peut présenter une série de saillies conformées et disposées pour être engagées dans lesdites cavités d'un implant lorsque la pièce en forme de capuchon est mise en place sur cet implant. Le positionnement angulaire d'une pièce en forme de capuchon sur un implant est ainsi réalisé de manière fiable et simple à réaliser.The assembly according to the invention may comprise several parts in the form of a cap, the axes of the said cavities forming different angles, from one part to another, with the axes of generation of the lateral faces of these parts, these different angles being adapted to the different inclinations to be corrected, which an implant may present. Each cap-shaped part may have a series of projections shaped and arranged to be engaged in said cavities of an implant when the cap-shaped part is placed on this implant. The angular positioning of a cap-shaped part on an implant is thus carried out in a reliable and simple manner.
L'ensemble selon l'invention peut également comprendre plusieurs pièces 30 en forme de capuchons, reliées les unes aux autres par des pont de matière 26. Lorsqu'un implant est mis en place sans déviation, cette pièce d'adaptation forme un adaptateur pour la réception du bridge.The assembly according to the invention may also comprise several pieces 30 in the form of caps, connected to each other by bridges of material 26. When an implant is placed without deviation, this adaptation piece forms an adapter for reception of the bridge.
L'invention concerne également chaque implant, l'outil de pose, chaque pièce en forme de capuchon ou pièce d'adaptation précitée, prise individuellement. L'invention concerne aussi une prothèse, qui comporte un trou transversal 203 pour l'engagement d'une clavette 204 destinée à être également engagée dans la gorge 11 du pion de l'implant et /ou la gorge 24 du capuchon et/ou au moins un doigt 205 destiné à être engagé dans une cavité 10 de l'implant. Pour sa bonne compréhension, l'invention est à nouveau décrite ci-dessous en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, une forme de réalisation préférée de l'ensemble qu'elle concerne.The invention also relates to each implant, the installation tool, each piece in the form of the aforementioned cap or adaptation piece, taken individually. The invention also relates to a prosthesis, which has a transverse hole 203 for the engagement of a key 204 intended to also be engaged in the groove 11 of the implant pin and / or the groove 24 of the cap and / or at at least one finger 205 intended to be engaged in a cavity 10 of the implant. For a good understanding, the invention is again described below with reference to the appended diagrammatic drawing representing, by way of nonlimiting example, a preferred embodiment of the assembly which it relates to.
La figure 1 est une vue en perspective de l'implant et d'une partie de l'outil de pose qu'il comprend ; la figure 2 est une vue de l'implant après mise en place dans une mâchoire et montage d'une dent prothétique ; la figure 3 est une vue d'une seconde dent prothétique montée sur un implant ; la figure 4 est une vue de l'implant et d'une pièce formant capuchon, qu'il comprend, en coupe longitudinale, et la figure 5 est une vue de deux implants mis en place dans une mâchoire, dans le cas de la mise en place d'un "bridge", c'est-à-dire d'un pont utilisé pour recevoir deux dents prothétiques adjacentes, ou plus. La figure 1 représente un ensemble comprenant un implant 1 d'ancrage d'une dent prothétique dans une mâchoire et un outil 2 de pose de cet implant.Figure 1 is a perspective view of the implant and part of the delivery tool it includes; Figure 2 is a view of the implant after placement in a jaw and mounting of a prosthetic tooth; Figure 3 is a view of a second prosthetic tooth mounted on an implant; FIG. 4 is a view of the implant and of a piece forming a cap, which it comprises, in longitudinal section, and FIG. 5 is a view of two implants placed in a jaw, in the case of placing in place of a "bridge", that is to say a bridge used to receive two or more adjacent prosthetic teeth. FIG. 1 represents an assembly comprising an implant 1 for anchoring a prosthetic tooth in a jaw and a tool 2 for placing this implant.
L'implant 1 comprend, de son extrémité distale vers son extrémité proximale, une partie filetée 3 de forme cylindrique, destinée à être ancrée dans l'os par vissage, une partie lisse 4 destinée à se trouver, après mise en place, au niveau de la muqueuse gingivale, une partie évasée 5 formant une collerette d'appui contre cette muqueuse, une face proximale plane 6, et un pion 7 de montage de la dent. Une série de douze trous borgnes 10 est aménagée dans la partie évasée 5, à partir de la face 6, ces trous 10 étant disposés sur un cercle concentrique au pion 7 et régulièrement répartis sur ce cercle.The implant 1 comprises, from its distal end towards its proximal end, a threaded part 3 of cylindrical shape, intended to be anchored in the bone by screwing, a smooth part 4 intended to be, after placement, at the level of the gingival mucosa, a flared part 5 forming a support flange against this mucosa, a flat proximal face 6, and a pin 7 for mounting the tooth. A series of twelve blind holes 10 is arranged in the flared part 5, starting from the face 6, these holes 10 being arranged on a circle concentric with the pin 7 and regularly distributed over this circle.
Le pion 7 présente une gorge 11 , aménagée sensiblement à sa mi- hauteur. L'outil de pose 2 comprend une partie 15 en forme de cloche, conformée pour venir coiffer, de manière ajustée, le pion 7 et la face β.The pin 7 has a groove 11, arranged substantially at its mid-height. The fitting tool 2 comprises a part 15 in the shape of a bell, shaped to come cap, in an adjusted manner, the pin 7 and the β face.
Au niveau de son bord circulaire distal, la cloche 15 comprend une série de tiges 16 faisant saillie de ce bord parallèlement à l'axe de cette clocheAt its distal circular edge, the bell 15 comprises a series of rods 16 projecting from this edge parallel to the axis of this bell
15. Ces tiges 16 sont dimensionnées et disposées pour pouvoir être engagées de manière ajustée dans les trous 10 de l'implant 1 lorsque le pion 7 est engagé dans le logement 17 délimité par la cloche 15.15. These rods 16 are dimensioned and arranged so that they can be engaged in an adjusted fashion in the holes 10 of the implant 1 when the pin 7 is engaged in the housing 17 delimited by the bell 15.
Ce logement comprend une saillie (non visible sur les figures),, propre à être encliquetée de manière réversible dans la gorge 11.This housing includes a projection (not visible in the figures), capable of being snapped reversibly into the groove 11.
Grâce à l'engagement des tiges 16 dans les trous 10, à l'engagement ajusté du pion 7 dans le logement 17 et à l'engagement de ladite saillie dans la gorge 11 , l'implant 1 est parfaitement calé et maintenu par rapport à l'outil 2, ce qui permet une mise en place facilitée de cet implant 1 dans l'os de la mâchoire.Thanks to the engagement of the rods 16 in the holes 10, to the adjusted engagement of the pin 7 in the housing 17 and to the engagement of said projection in the groove 11, the implant 1 is perfectly wedged and maintained with respect to tool 2, which makes it easier to place this implant 1 in the jaw bone.
La figure 2 montre cette mise en place, la partie filetée 3 étant ancrée dans l'os 100 par vissage, la partie lisse 4 se trouvant au niveau de la muqueuse gingivale 101 avec appui de la partie évasée 5 contre cette muqueuse, et le pion 7 recevant la dent prothétique 102. Cette dent 102 est fixée à ce pion 107 au moyen d'un ciment synthétique approprié 103.FIG. 2 shows this positioning, the threaded part 3 being anchored in the bone 100 by screwing, the smooth part 4 being at the level of the gingival mucosa 101 with the support of the flared part 5 against this mucosa, and the pin 7 receiving the prosthetic tooth 102. This tooth 102 is fixed to this pin 107 by means of an appropriate synthetic cement 103.
La figure 3 montre une autre dent prothétique 202 comportant un trou transversal débouchant dans l'une de ses faces, se prolongeant par une gorge 203 ménagée dans la cavité 204 destinée à venir coiffer le pion de l'implant. Les gorges 11 de l'implant et 203 de la prothèse délimitent une ouverture pour l'engagement d'une clavette 204. Cette prothèse est donc bloquée en translation sur le pion et de façon amovible par cette clavette 204. En outre la prothèse comporte, à son extrémité située du côté de l'implant, un doigt axial 205 destiné à pénétrer dans un trou borgne 10 de l'implant pour assurer le blocage en rotation de la prothèse.FIG. 3 shows another prosthetic tooth 202 comprising a transverse hole opening out in one of its faces, extending by a groove 203 formed in the cavity 204 intended to come over the pin of the implant. The grooves 11 of the implant and 203 of the prosthesis delimit an opening for the engagement of a key 204. This prosthesis is therefore locked in translation on the pin and removably by this key 204. In addition the prosthesis comprises, at its end located on the side of the implant, an axial finger 205 intended to penetrate a blind hole 10 of the implant to ensure the rotation of the prosthesis.
La figure 4 montre un implant 1 identique à celui qui vient d'être décrit et une pièce 20 en forme de capuchon propre à venir coiffer le pion 7 et la face 6. Cette pièce 20 présente une cavité 21 de réception ajustée du pion 7, dans laquelle est aménagée une saillie 22 propre à être engagée dans la gorge 11, et une face latérale 23 de révolution. Ainsi que le montre cette figure 4, l'axe de génération de la face 23 forme, avec l'axe de la cavité 21 , un angle non nul, de l'ordre de 5° dans l'exemple représenté.FIG. 4 shows an implant 1 identical to that which has just been described and a part 20 in the form of a cap suitable for covering the pin 7 and the face 6. This part 20 has a cavity 21 for receiving the pin adjusted 7, in which is arranged a projection 22 adapted to be engaged in the groove 11, and a lateral face 23 of revolution. As shown in this figure 4, the generation axis of the face 23 forms, with the axis of the cavity 21, a non-zero angle, of the order of 5 ° in the example shown.
La pièce 20 présente en outre, au niveau de sa face 23, une gorge 24 permettant la rétention d'un bridge, comme décrit plus loin.The part 20 also has, at its face 23, a groove 24 allowing the retention of a bridge, as described below.
L'ensemble selon l'invention comprend une pluralité de telles pièces 20, ayant des cavités 21 dont les axes forment, d'une pièce 20 à une autre, des angles différents avec lesdits axes de génération.The assembly according to the invention comprises a plurality of such parts 20, having cavities 21 whose axes form, from one part 20 to another, different angles with said generation axes.
La figure 5 montre deux implants 1 tels que précités, mis en place en deux emplacements consécutifs d'une mâchoire pour recevoir un bridge 25, c'est-à-dire une pièce formant un pont 26 de montage de deux dents 102 adjacentes et deux parties 27 de connexion aux implants 1.FIG. 5 shows two implants 1 as mentioned above, placed in two consecutive locations of a jaw to receive a bridge 25, that is to say a part forming a bridge 26 for mounting two adjacent teeth 102 and two parts 27 for connection to implants 1.
Il apparaît sur cette figure 4 que l'un des deux implants 1 , celui de gauche dans l'exemple représenté, est mis en place de manière légèrement déviée par rapport à l'autre implant 1 , le trou réalisé dans la mâchoire 100 pour recevoir cet implant 1 ayant lui-même été aménagé de manière légèrement déviée.It appears in this FIG. 4 that one of the two implants 1, the one on the left in the example shown, is placed in a slightly deflected manner relative to the other implant 1, the hole made in the jaw 100 to receive this implant 1 having itself been arranged slightly deflected.
Cet implant 1 reçoit alors une pièce 20 dont l'axe de la cavité 21 forme un angle avec l'axe de la paroi 23 tel que, après montage, cet axe de la paroi 23 soit parallèle à la direction d'implantation qui aurait été adéquate si l'implant 1 avait été mis en place sans déviation.This implant 1 then receives a part 20 whose axis of the cavity 21 forms an angle with the axis of the wall 23 such that, after assembly, this axis of the wall 23 is parallel to the direction of implantation which would have been adequate if implant 1 had been inserted without deviation.
L'autre implant 1 est quant à lui correctement positionné et reçoit une pièce 30 identique à une pièce 20, sinon que l'axe de sa cavité 21 forme un angle nul avec l'axe de génération de sa face 23. Ainsi qu'il apparaît de ce qui précède, l'invention apporte une amélioration déterminante à la technique antérieure, en fournissant un ensemble permettant d'assurer une parfaite liaison en rotation entre l'implant et l'outil de pose, et permettant de rectifier facilement et rapidement l'orientation du pion 7 d'un implant mis en place de manière légèrement déviée, facilitant ainsi la pose d'un bridge.The other implant 1 is in turn correctly positioned and receives a part 30 identical to a part 20, except that the axis of its cavity 21 forms a zero angle with the axis of generation of its face 23. As it appears from the above, the invention brings a decisive improvement to the prior art, by providing a assembly making it possible to ensure a perfect connection in rotation between the implant and the positioning tool, and allowing to easily and quickly rectify the orientation of the pin 7 of an implant placed in a slightly deflected manner, thus facilitating the positioning of a bridge.
Il va de soi que l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple mais qu'elle en embrasse au contraire toutes les variantes de réalisation entrant dans le champ de protection défini par les revendications ci-annexées. It goes without saying that the invention is not limited to the embodiment described above by way of example but that, on the contrary, it embraces all the variant embodiments falling within the scope of protection defined by the claims. appended.

Claims

REVENDICATIONS
1. Ensemble comprenant un implant dentaire (1) destiné à l'ancrage à une mâchoire (100) d'une ou plusieurs dents prothétiques (102), et un outil (2) de mise en place de cet implant (1) dans cette mâchoire, comprenant :1. Assembly comprising a dental implant (1) intended for anchoring to a jaw (100) one or more prosthetic teeth (102), and a tool (2) for positioning this implant (1) in this jaw, comprising:
- un implant (1) monobloc présentant une partie filetée (3) destinée à être ancrée dans la mâchoire (100) par vissage, une partie (7) en forme de pion de forme tronconique et de section circulaire, et des moyens de calage (10) pour la venue de cet implant (1) en prise avec un outil de pose (2), et - cet outil de pose (2), qui comprend des moyens de calage (16) complémentaires de ceux de l'implant (1) ; ensemble caractérisé en ce que :- a one-piece implant (1) having a threaded part (3) intended to be anchored in the jaw (100) by screwing, a part (7) in the form of a pawn of frustoconical shape and of circular section, and wedging means ( 10) for the coming of this implant (1) in engagement with a setting tool (2), and - this setting tool (2), which comprises wedging means (16) complementary to those of the implant (1 ); set characterized in that:
- les moyens de calage de l'implant (1) comprennent une série de cavités (10) disposées sur un cercle concentrique à ladite partie en forme de pion (7) ; et- The implant setting means (1) comprise a series of cavities (10) arranged on a circle concentric with said pawn-shaped part (7); and
- les moyens de calage de l'outil de pose (2) comprennent une série de saillies (16) conformées et disposées pour être engagées dans lesdites cavités (10).- The setting means of the setting tool (2) comprise a series of projections (16) shaped and arranged to be engaged in said cavities (10).
2. Ensemble selon la revendication 1 , caractérisé en ce que ladite partie en forme de pion (7) comprend une gorge (11) aménagée dans sa paroi latérale, et en ce que l'outil de pose (2) comprend une saillie aménagée dans le logement destiné à recevoir cette partie en forme de pion (7), cette saillie étant propre à être encliquetée de manière réversible dans cette gorge (11).2. Assembly according to claim 1, characterized in that said pawn-shaped part (7) comprises a groove (11) arranged in its side wall, and in that the fitting tool (2) comprises a projection arranged in the housing intended to receive this pawn-shaped part (7), this projection being suitable for being snapped in reversibly in this groove (11).
3. Ensemble selon la revendication 1 ou la revendication 2, caractérisé en ce que lesdites cavités (10) de l'implant (1) sont aménagées de manière à être régulièrement réparties sur le cercle sur lequel elles se trouvent.3. Assembly according to claim 1 or claim 2, characterized in that said cavities (10) of the implant (1) are arranged so as to be regularly distributed over the circle on which they are located.
4. Ensemble selon l'une des revendications 1 à 3, caractérisé en ce qu'il comprend au moins une pièce (20) en forme de capuchon, propre à venir coiffer ladite partie en forme de pion (7), qui présente une cavité (21) de réception de la partie en forme de pion (7) de forme complémentaire de celle du pion (7), cette pièce (20) étant destinée à recevoir la prothèse.4. Assembly according to one of claims 1 to 3, characterized in that it comprises at least one part (20) in the form of a cap, suitable for covering said pawn-shaped part (7), which has a cavity (21) for receiving the pawn-shaped part (7) whose shape is complementary to that of the pawn (7), this part (20) being intended to receive the prosthesis.
5. Ensemble selon la revendication 4, caractérisé en ce que l'axe de la pièce (20) en forme de capuchon forme un angle non nul avec l'axe de génération de la face latérale de révolution de la cavité (21). 5. An assembly according to claim 4, characterized in that the axis of the part (20) in the form of a cap forms a non-zero angle with the axis of generation of the lateral face of revolution of the cavity (21).
6. Ensemble selon la revendication 4 ou la revendication 5, caractérisé en ce que chaque pièce en forme de capuchon présente une série de saillies conformées et disposées pour être engagées dans lesdites cavités d'un implant lorsque la pièce en forme de capuchon est mise en place sur cet implant.6. Assembly according to claim 4 or claim 5, characterized in that each cap-shaped part has a series protrusions shaped and arranged to be engaged in said cavities of an implant when the cap-shaped part is placed on this implant.
7. Ensemble selon l'une des revendications 4 à 6, caractérisé en ce qu'il comprend plusieurs pièces (30) en forme de capuchons, reliées les unes aux autres par des pont de matière (26).7. Assembly according to one of claims 4 to 6, characterized in that it comprises several parts (30) in the form of caps, connected to each other by material bridges (26).
8. Prothèse dentaire destinée à équiper un implant (1) ou une pièce (20, 30) en forme de capuchon selon l'une des revendications 1 à 7, caractérisée en ce qu'elle comporte un trou transversal (203) pour l'engagement d'une clavette (204) destinée à être également engagée dans la gorge (11) du pion de l'implant ou une gorge (24) du capuchon.8. A dental prosthesis intended to equip an implant (1) or a part (20, 30) in the form of a cap according to one of claims 1 to 7, characterized in that it comprises a transverse hole (203) for the engagement of a key (204) intended to also be engaged in the groove (11) of the implant pin or a groove (24) of the cap.
9. Prothèse dentaire destinée à équiper un implant (1) ou une pièce (20,30) en forme de capuchon selon l'une des revendications 1 à 7, caractérisée en ce qu'elle comporte un doigt (205) destiné à être engagé dans une cavité (10) de l'implant. 9. dental prosthesis intended to equip an implant (1) or a part (20,30) in the form of a cap according to one of claims 1 to 7, characterized in that it comprises a finger (205) intended to be engaged in a cavity (10) of the implant.
PCT/FR2004/000424 2003-02-25 2004-02-25 Set comprising a dental implant and a tool for installing said implant WO2004075769A2 (en)

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FR0302290A FR2851454B1 (en) 2003-02-25 2003-02-25 ASSEMBLY COMPRISING A DENTAL IMPLANT AND A TOOL FOR PLACING THIS IMPLANT
FR03/02290 2003-02-25

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NL1036155C (en) * 2008-11-05 2010-05-06 Eazy2 Implant Innovations B V INPUT PART OF A TWO PART IMPLANT WITH INPUT INSTRUMENT.

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EP3053540B1 (en) * 2015-02-03 2018-03-21 Gerd Axel Walther Implant screw and implant system

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US3672058A (en) * 1969-04-18 1972-06-27 Albert Jean Nikoghossian Dental implant
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WO2010053352A1 (en) * 2008-11-05 2010-05-14 White Implants Development Corp Insertion part of a two-part implant with insertion instrument
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WO2004075769A3 (en) 2004-10-14
FR2851454B1 (en) 2005-12-09

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