WO1994026199A1 - Tray for assisting in fitting a dental implant - Google Patents

Tray for assisting in fitting a dental implant Download PDF

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Publication number
WO1994026199A1
WO1994026199A1 PCT/FR1994/000545 FR9400545W WO9426199A1 WO 1994026199 A1 WO1994026199 A1 WO 1994026199A1 FR 9400545 W FR9400545 W FR 9400545W WO 9426199 A1 WO9426199 A1 WO 9426199A1
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WO
WIPO (PCT)
Prior art keywords
gutter
tray
mouth
support
drilling
Prior art date
Application number
PCT/FR1994/000545
Other languages
French (fr)
Inventor
Thomas Fortin
Original Assignee
Universite Joseph Fourier
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 Universite Joseph Fourier filed Critical Universite Joseph Fourier
Publication of WO1994026199A1 publication Critical patent/WO1994026199A1/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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/082—Positioning or guiding, e.g. of drills
    • A61C1/084—Positioning or guiding, e.g. of drills of implanting tools
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C2201/00—Material properties
    • A61C2201/005—Material properties using radio-opaque means

Definitions

  • the present invention relates to the placement of dental implants intended to ensure the maintenance of a prosthesis.
  • these prostheses are anchored in the upper or lower jaw of the patient by means of one or more implants screwed into this jaw.
  • a conventional process for determining the position of the implants comprises the following succession of steps. Stage I
  • the patient puts the mouthpiece in the mouth and is subjected to an examination with an X-ray scanner.
  • the acquisition of the scanner sections is generally done in the axial plane (that is to say parallel to the lower edge of the horizontal branch of the mandible).
  • the radiologist is asked to provide sections passing approximately through the desired position of the implant.
  • the radiologist uses the radiopaque mark included in the splint to indicate to the scanner software the desired location for the implant.
  • the scanner software calculates an image passing through this mark and perpendicular to the plane of the acquisition sections. From this calculated image, the dentist defines whether he can place the implant at this location while respecting the various endosseous elements and according to which approximate trajectory. If he can't put it at this place, it estimates the displacement towards another position compared to the mark included in the gutter. All of these estimates are used to postpone, without quantified parameters, the implant in the mouth.
  • the gutter is taken out of the patient's mouth and then, in certain embodiments, the gutter is pierced which will then serve as a guide for piercing the maxilla at the location where the implant is to be inserted.
  • the object of the present invention is to remedy this drawback and to provide a precise drilling process for the gutter taking advantage of the information previously collected by the scanner.
  • the present invention provides a gutter suitable for being placed in the mouth of a partially edentulous patient to simulate a dental prosthesis and prepare the placement of implants, characterized in that it is coated at least partially of a radiopaque material.
  • this gutter comprises locating protuberances observable to X-rays and optically or by mechanical palpation.
  • this gutter is suitable for the implementation of a method for positioning dental implants comprising the following steps: production of a gutter from an impression of a maxilla; placing this mouthpiece in the mouth and making cross-section images with an X-ray scanner of this mouthpiece and the corresponding maxilla; determination by simulation software of the optimal position of an implant to be produced; positioning of the gutter on a support linked to a robotics system; taking an image of this gutter on its support; fusion of images of the gutter on its support and of the gutter analyzed by X-ray scanner; determination in the frame of reference of the ideal drilling axes determined by analysis with an X-ray scanner; drilling by the robot of the gutter along said axes; and putting the mouthpiece back in the mouth and using this mouthpiece as a guide for drilling the jawbone for placing implants.
  • step II the external faces of the gutter (those which are not in contact with the gum tissue ) are coated with a partially radio-opaque material, for example a radio-opaque resin comprising 50% of conventional resin powder and 50% of Robin powder.
  • a radio-opaque resin comprising 50% of conventional resin powder and 50% of Robin powder.
  • step III of the conventional method described above for the X-ray examination of the patient with the gutter in the mouth and for the production of section images in axial planes, but this time we do not proceed not to the calculation of an image in a plane perpendicular to said axial planes.
  • the contour of this gutter in various sections can be raised and the optimal drilling axis of the implant (s) can be defined with respect to axes linked to this contour.
  • the gutter is placed on a support in the presence of a medium for optical or mechanical determination of its position by taking an image or palpating its external contour and the axes of a reference frame. associated with this gutter can be defined precisely. So, by known processing operations (such as those defined for example in the article IGOR: Image Guided Operating Robot. Methodology, Medical Applications, Results, by Philippe Cinquin, et al. Published in Inn ⁇ v. Tech. Biol. Med. , Vol. 13, No. 4, 1992), a fusion is established between the optical (digitized) image of the gutter and its image reconstituted from cuts made with the X scanner.
  • an essential aspect of the present invention resides in the production of a gutter whose contour or at least specific points defining its position are visible both in an X-ray image and in an optical image or by palpation. mechanical.
  • the gutter is uniformly coated with a layer of radio opaque material. This covering may possibly be located at certain precise locations, also optically or mechanically determinable. It is also possible to provide protuberances specially adapted to its location on the gutter, for example a part in the shape of a solid trihedron whose points are visible by the various image taking systems.
  • the gutter no longer needs to be made of a transparent material because there is no longer any need to make visual observation of the cones which are inserted therein.

Abstract

Tray adapted to be inserted in the patient's mouth to simulate a dental prosthesis and assist in fitting an implant. The tray is covered at least partially with a radio-opaque material and is suitable for carrying out a method of placing dental implants. The method consists in inserting the tray in the patient's mouth and obtaining cross section images of the tray and the corresponding maxilla using an X-ray scanner; determining the optimal position of an implant to be produced; positioning the tray on a support linked to a robotic system; imaging the tray on its support; fusing the images of the tray on its support and the tray analyzed by the X-ray scanner; determining in the support's referential system the ideal drilling axes determined by X-ray scanner analysis; drilling by the robot of the tray according to said axes; and reinserting the tray in the mouth and using the tray as a guide to drill holes in the maxilla for the purpose of fitting the implant.

Description

GOUTTIERE POUR PREPARER LA POSE D'UN IMPLANT DENTAIRE GUTTER FOR PREPARING A DENTAL IMPLANT
La présente invention concerne la pose d'implants dentaires destinés à assurer le maintien d'une prothèse.The present invention relates to the placement of dental implants intended to ensure the maintenance of a prosthesis.
Quand la dentition d'un patient est fortement dégra¬ dée, on peut envisager d'en remplacer les dents manquantes par des prothèses dentaires. Dans un mode de pose préféré, ces prothèses sont ancrées dans le maxillaire supérieur ou inférieur du patient par l'intermédiaire d'un ou plusieurs implants vissés dans ce maxillaire.When the dentition of a patient is severely degraded, one can consider replacing the missing teeth with dental prostheses. In a preferred mode of installation, these prostheses are anchored in the upper or lower jaw of the patient by means of one or more implants screwed into this jaw.
Une difficulté réside dans le fait que, quand la den- tition d'un patient est fortement dégradée, il arrive également souvent aussi que le système osseux de ses maxillaires soit en mauvais état. Les emplacements où il est possible de poser les implants sont donc fortement limités et doivent être déterminés avec une grande précision. Un processus classique de détermination de position des implants comprend la succession d'étapes suivantes. Etape IOne difficulty lies in the fact that, when a patient's dentition is severely degraded, it also often happens that the bone system of his jaws is in poor condition. The locations where it is possible to place the implants are therefore very limited and must be determined with great precision. A conventional process for determining the position of the implants comprises the following succession of steps. Stage I
Prise d'une empreinte du maxillaire à implanter grâce à un matériau d'empreinte tel que du silicone, un alginate, un hydrocollo'ide, etc., et coulée d'un modèle en plâtre à partir de cette empreinte. Etape IITaking an impression of the maxilla to be implanted using an impression material such as silicone, an alginate, a hydrocolloid, etc., and casting a plaster model from this impression. Stage II
Réalisation d'une gouttière en résine transparente dont l'unique but est de porter une marque radio opaque qui indique en bouche l'endroit où l'on désire mettre l'implant dans l'os. Cette marque est indispensable pour le radiologue. Cette gouttière est élaborée à partir du modèle en plâtre. Elle est la reproduction en négatif de ce modèle sur lequel elle doit pou¬ voir s'encastrer intimement. Toutes les faces de la gouttière qui n'entrent pas en contact avec le modèle en plâtre ont une forme quelconque. A partir d'une analyse de la forme des dents et du système masticatoire du patient, le praticien détermine généralement a priori les endroits où il estime qu'il serait souhaitable d'ancrer la prothèse et de placer les implants. Pour matérialiser ces emplacements, on dispose dans la gouttière, des cylindres ou cônes en un matériau visible aux rayons X, tel que du gutta-percha, dont les orientations correspondent aux axes de perçage estimés. Il s'agit alors de déterminer si ces axes de perçage estimés, idéaux du point de vue prothétique, sont compa¬ tibles avec la structure osseuse du maxillaire. Etape IIIRealization of a transparent resin gutter whose sole purpose is to carry a radio opaque mark which indicates in the mouth the place where one wishes to put the implant in the bone. This mark is essential for the radiologist. This gutter is made from the plaster model. It is the negative reproduction of this model on which it must be able to fit intimately. All the sides of the gutter which do not come into contact with the plaster model have any shape. From an analysis of the shape of the teeth and the patient's masticatory system, the practitioner generally determines a priori the places where he considers it desirable to anchor the prosthesis and place the implants. To materialize these locations, cylinders or cones are made in a material visible from X-rays, such as gutta-percha, in the gutter, the orientations of which correspond to the estimated drilling axes. It is then a question of determining whether these estimated drilling axes, ideal from the prosthetic point of view, are compatible with the bone structure of the maxilla. Stage III
Le patient met en bouche la gouttière et est soumis à un examen au scanner à rayons X. L'acquisition des coupes scanner se fait en général dans le plan axial (c'est-à-dire parallèlement au rebord inférieur de la branche horizontale de la mandibule). On demande au radiologue de fournir des coupes passant approximativement par la position désirée de 1'implant. Pour cela, le radiologue se sert de la marque radio-opaque incluse dans la gouttière pour indiquer au logiciel du scanner l'endroit désiré pour l'implant. Le logiciel du scanner calcule alors une image passant par cette marque et perpendiculaire au plan des coupes d'acquisition. A partir de cette image calculée, le dentiste définit s'il peut mettre l'implant à cet endroit en respectant les divers éléments endo-osseux et selon quelle trajectoire approximative. S'il ne peut pas le mettre à cet endroit, il estime le déplacement vers une autre position par rapport à la marque incluse dans la gouttière. On se sert de toutes ces estimations pour reporter, sans paramètres chiffrés, l'implant en bouche.The patient puts the mouthpiece in the mouth and is subjected to an examination with an X-ray scanner. The acquisition of the scanner sections is generally done in the axial plane (that is to say parallel to the lower edge of the horizontal branch of the mandible). The radiologist is asked to provide sections passing approximately through the desired position of the implant. For this, the radiologist uses the radiopaque mark included in the splint to indicate to the scanner software the desired location for the implant. The scanner software then calculates an image passing through this mark and perpendicular to the plane of the acquisition sections. From this calculated image, the dentist defines whether he can place the implant at this location while respecting the various endosseous elements and according to which approximate trajectory. If he can't put it at this place, it estimates the displacement towards another position compared to the mark included in the gutter. All of these estimates are used to postpone, without quantified parameters, the implant in the mouth.
Etape IVStage IV
On sort la gouttière de la bouche du patient puis, dans certaines réalisations, on réalise un perçage de la gout¬ tière qui servira ensuite de guide pour le perçage du maxillaire à l'eπplacement où l'on souhaite insérer l'implant.The gutter is taken out of the patient's mouth and then, in certain embodiments, the gutter is pierced which will then serve as a guide for piercing the maxilla at the location where the implant is to be inserted.
L'inconvénient fondamental de ce procédé est que, alors que l'analyse résultant des images scanner a permis de définir avec précision le ou les axes optimaux de perçage de cette gouttière, cette précision ne peut en fait être utilisée car, une fois la gouttière sortie de la bouche, il n'est pas prévu dans l'art antérieur de moyen pour guider le perçage en fonction des informations précises recueillies. Ce perçage est seulement effectué au jugé par rapport aux positions des cônes (les cônes sont généralement en une matière opaque telle que du gutta percha tandis que la gouttière est en un matériau opti- quement transparent).The fundamental drawback of this process is that, while the analysis resulting from the scanner images has made it possible to precisely define the optimal axis or axes of drilling of this gutter, this precision cannot in fact be used because, once the gutter out of the mouth, there is no provision in the prior art for means to guide the piercing according to the precise information collected. This drilling is only carried out on the basis of the cone positions (the cones are generally made of an opaque material such as gutta percha while the gutter is made of an optically transparent material).
La présente invention a pour objet de remédier à cet inconvénient et de prévoir un procédé de perçage précis de la gouttière tirant partie des informations précédemment recueil¬ lies au scanner. Pour atteindre cet objet, la présente invention pré¬ voit une gouttière adaptée à être placée dans la bouche d'un patient partiellement édenté pour simuler une prothèse dentaire et préparer la pose d'implants, caractérisée en ce qu'elle est revêtue au moins partiellement d'un matériau radio-opaque. Selon un mode de réalisation de la présente invention, cette gouttière comprend des protubérances de repérage obser¬ vables aux rayons X et optiquement ou par palpation mécanique. Selon un mode de réalisation de la présente invention, cette gouttière est adaptée à la mise en oeuvre d'un procédé de positionnement d'implants dentaires comprenant les étapes sui¬ vantes : réalisation d'une gouttière à partir d'une empreinte d'un maxillaire ; mise en bouche de cette gouttière et réalisa¬ tion d'images de coupes au scanner à rayons X de cette gouttière et du maxillaire correspondant ; détermination par un logiciel de simulation de la position optimale d'un implant à réaliser ; positionnement de la gouttière sur un support lié à un système de robotique ; prise d'une image de cette gouttière sur son support ; fusion des images de la gouttière sur son support et de la gouttière analysée au scanner X ; détermination dans le référentiel du support des axes de perçage idéaux déterminés par analyse au scanner X ; perçage par le robot de la gouttière selon lesdits axes ; et remise en bouche de la gouttière et uti¬ lisation de cette gouttière comme guide de perçage de maxillaire pour la pose d'implants.The object of the present invention is to remedy this drawback and to provide a precise drilling process for the gutter taking advantage of the information previously collected by the scanner. To achieve this object, the present invention provides a gutter suitable for being placed in the mouth of a partially edentulous patient to simulate a dental prosthesis and prepare the placement of implants, characterized in that it is coated at least partially of a radiopaque material. According to one embodiment of the present invention, this gutter comprises locating protuberances observable to X-rays and optically or by mechanical palpation. According to one embodiment of the present invention, this gutter is suitable for the implementation of a method for positioning dental implants comprising the following steps: production of a gutter from an impression of a maxilla; placing this mouthpiece in the mouth and making cross-section images with an X-ray scanner of this mouthpiece and the corresponding maxilla; determination by simulation software of the optimal position of an implant to be produced; positioning of the gutter on a support linked to a robotics system; taking an image of this gutter on its support; fusion of images of the gutter on its support and of the gutter analyzed by X-ray scanner; determination in the frame of reference of the ideal drilling axes determined by analysis with an X-ray scanner; drilling by the robot of the gutter along said axes; and putting the mouthpiece back in the mouth and using this mouthpiece as a guide for drilling the jawbone for placing implants.
Un mode de réalisation détaillé de la présente inven¬ tion va maintenant être décrit. La présente invention reprend les étapes I et II du procédé antérieur cité ci-dessus, avec une différence fonda¬ mentale qui est que, à l'étape II, les faces extérieures de la gouttière (celles qui ne sont pas en contact avec la gencive) sont revêtues d'un matériau partiellement radio-opaque, par exemple une résine radio-opaque comprenant 50 % de poudre de résine classique et 50 % de poudre de Robin.A detailed embodiment of the present inven¬ tion will now be described. The present invention repeats steps I and II of the above-mentioned prior process, with a fundamental difference which is that, in step II, the external faces of the gutter (those which are not in contact with the gum tissue ) are coated with a partially radio-opaque material, for example a radio-opaque resin comprising 50% of conventional resin powder and 50% of Robin powder.
On procède ensuite comme à l'étape III du procédé classique exposé précédemment à l'examen au scanner X du patient avec la gouttière en bouche et à la réalisation d'images de coupe dans des plans axiaux, mais cette fois-ci on ne procède pas au calcul d'une image dans un plan perpendiculaire auxdits plans axiaux.We then proceed as in step III of the conventional method described above for the X-ray examination of the patient with the gutter in the mouth and for the production of section images in axial planes, but this time we do not proceed not to the calculation of an image in a plane perpendicular to said axial planes.
Lors de cette analyse aux rayons X, étant donné que la gouttière est revêtue d'un matériau au moins partiellement radio-opaque, le contour de cette gouttière dans diverses coupes peut être relevé et l'axe optimal de perçage du ou des implants peut être défini par rapport à des axes liés à ce contour.During this X-ray analysis, since the gutter is coated with a material at least partially radiopaque, the contour of this gutter in various sections can be raised and the optimal drilling axis of the implant (s) can be defined with respect to axes linked to this contour.
Ensuite, une fois la gouttière sortie de bouche, elle est placée sur un support en présence d'un milieu de détermina¬ tion optique ou mécanique de sa position par prise d'image ou palpation de son contour externe et des axes d'un référentiel associé à cette gouttière peuvent être définis avec précision. Alors, par des opérations de traitement connues (telles que celles définies par exemple dans l'article IGOR : Image Guided Opérating Robot. Méthodology, Médical Applications, Results, de Philippe Cinquin, et al. paru dans Innσv. Tech. Biol. Med. , Vol. 13, N° 4, 1992), on établit une fusion entre l'image optique (numérisée) de la gouttière et son image reconstituée à partir des coupes réalisées au scanner X. A partir de cette fusion d'image, on obtient une relation entre le référentiel dans lequel l'image de la gouttière a été analysée par le scanner X et le référentiel résultant de l'analyse optique ou mécanique. Une fois la fusion des référentiels effectuée, les axes de perçage d'implants définis dans le référentiel du scanner X sont transposés dans le référentiel de la prise de vue optique ou de la palpation mécanique. Dans ce deuxième référen¬ tiel un robot de perçage est positionné de sorte que son axe de perçage coïncide exactement avec la position d'un axe défini par 1'analyse des images scanner et un perçage est effectué dans la gouttière exactement à l'emplacement et selon la direction souhaités. Cette opération est répétée si plusieurs implants sont prévus. II restera alors au chirurgien dentiste à remettre la gouttière en place dans la bouche du patient et à effectuer un perçage du maxillaire en guidant son foret sur le trou formé dans la gouttière. Ainsi, un aspect essentiel de la présente invention réside dans la réalisation d'une gouttière dont le contour ou au moins des points spécifiques définissant sa position sont visi¬ bles à la fois dans une image de rayons X et dans une image optique ou par palpation mécanique. Dans un mode de réalisation préféré, la gouttière est uniformément revêtue d'une couche d'un matériau radio opaque. On peut éventuellement localiser ce revê¬ tement à certains emplacements précis, également déterminables optiquement ou mécaniquement. On peut aussi prévoir sur la gout- tière des protubérances spécialement adaptées à son repérage, par exemple une partie en forme de trièdre plein dont les poin¬ tes seraient visibles par les divers systèmes de prise d'images. Selon un avantage de la présente invention, la gout¬ tière n'a plus besoin d'être en un matériau transparent car on n'a plus besoin d'effectuer d'observation visuelle des cônes qui y sont insérés. Then, once the gutter has come out of the mouth, it is placed on a support in the presence of a medium for optical or mechanical determination of its position by taking an image or palpating its external contour and the axes of a reference frame. associated with this gutter can be defined precisely. So, by known processing operations (such as those defined for example in the article IGOR: Image Guided Operating Robot. Methodology, Medical Applications, Results, by Philippe Cinquin, et al. Published in Innσv. Tech. Biol. Med. , Vol. 13, No. 4, 1992), a fusion is established between the optical (digitized) image of the gutter and its image reconstituted from cuts made with the X scanner. From this image fusion, we obtains a relationship between the frame of reference in which the image of the gutter was analyzed by the X scanner and the frame of reference resulting from the optical or mechanical analysis. Once the reference frames have been merged, the implant drilling axes defined in the reference frame of the X scanner are transposed into the reference frame for optical shooting or mechanical palpation. In this second reference, a drilling robot is positioned so that its drilling axis coincides exactly with the position of an axis defined by the analysis of the scanner images and drilling is carried out in the gutter exactly at the location and depending on the desired direction. This operation is repeated if several implants are planned. It will then remain for the dental surgeon to put the gutter back in place in the mouth of the patient and to perform a drilling of the jawbone by guiding its drill over the hole formed in the gutter. Thus, an essential aspect of the present invention resides in the production of a gutter whose contour or at least specific points defining its position are visible both in an X-ray image and in an optical image or by palpation. mechanical. In a preferred embodiment, the gutter is uniformly coated with a layer of radio opaque material. This covering may possibly be located at certain precise locations, also optically or mechanically determinable. It is also possible to provide protuberances specially adapted to its location on the gutter, for example a part in the shape of a solid trihedron whose points are visible by the various image taking systems. According to an advantage of the present invention, the gutter no longer needs to be made of a transparent material because there is no longer any need to make visual observation of the cones which are inserted therein.

Claims

REVENDICATIONS
1. Gouttière adaptée à être placée dans la bouche d'un patient partiellement édenté pour simuler une prothèse dentaire et préparer la pose d'implants, caractérisée en ce qu'elle est revêtue au moins partiellement d'un matériau radio-opaque. 1. Gutter adapted to be placed in the mouth of a partially edentulous patient to simulate a dental prosthesis and prepare the placement of implants, characterized in that it is coated at least partially with a radiopaque material.
2. Gouttière selon la revendication 1, caractérisée en outre en ce qu'elle comprend des protubérances de repérage observables aux rayons X et optiquement ou par palpation méca¬ nique.2. Gutter according to claim 1, further characterized in that it comprises locating protuberances observable by X-rays and optically or by mechanical palpation.
3. Gouttière selon la revendication 1, caractérisée en ce qu'elle est adaptée à la mise en oeuvre d'un procédé de positionnement d'implants dentaires comprenant les étapes suivantes :3. Gutter according to claim 1, characterized in that it is adapted to the implementation of a method for positioning dental implants comprising the following steps:
- réalisation d'une gouttière à partir d'une empreinte d'un maxillaire ; - mise en bouche de cette gouttière et réalisation d'images de coupes au scanner à rayons X de cette gouttière et du maxillaire correspondant ;- realization of a gutter from an impression of a jaw; - placing this mouthpiece in the mouth and producing section images with an X-ray scanner of this mouthpiece and the corresponding maxilla;
- détermination par un logiciel de simulation de la position optimale d'un implant à réaliser ; - positionnement de la gouttière sur un support lié à un système de robotique ;- determination by simulation software of the optimal position of an implant to be produced; - positioning of the gutter on a support linked to a robotics system;
- prise d'une image de cette gouttière sur son support ;- taking an image of this gutter on its support;
- fusion des images de la gouttière sur son support et de la gouttière analysée au scanner X ;- fusion of the images of the gutter on its support and of the gutter analyzed with the X scanner;
- détermination dans le référentiel du support des axes de perçage idéaux déterminés par analyse au scanner X ;- determination in the frame of reference of the ideal drilling axes determined by analysis with an X-ray scanner;
- perçage par le robot de la gouttière selon lesdits axes ; et - remise en bouche de la gouttière et utilisation de cette gouttière comme guide de perçage de maxillaire pour la pose d'implants. - drilling by the robot of the gutter along said axes; and - placing the mouthpiece back in the mouth and using this mouthpiece as a guide for drilling the jawbone for implant placement.
PCT/FR1994/000545 1993-05-11 1994-05-09 Tray for assisting in fitting a dental implant WO1994026199A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9305889A FR2705027B1 (en) 1993-05-11 1993-05-11 Gutter to prepare the installation of a dental implant.
FR93/05889 1993-05-11

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WO1994026199A1 true WO1994026199A1 (en) 1994-11-24

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WO (1) WO1994026199A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999026540A1 (en) * 1997-11-24 1999-06-03 Michael Klein Surgical template assembly and method for drilling and installingdental implants
WO2001087178A1 (en) * 2000-05-17 2001-11-22 Neuschaefer Gerd Device for planning and drilling implant supports in the human jaw
FR2919171A1 (en) 2007-07-23 2009-01-30 Hospices Civils De Lyon Etabli DEVICE FOR POSITIONING AND IMMOBILIZING A SURGICAL GUIDE IN THE MOUTH OF A PATIENT.
NL2005040C2 (en) * 2009-11-20 2011-05-24 Dirk Peter Leenheer METHOD FOR MAKING A NUMERIC THREE-DIMENSIONAL MODEL OF A STRUCTURE OF SOFT AND HARD PARTS, THREE-DIMENSIONAL MODEL AND BEARING.
CN106419951A (en) * 2016-09-27 2017-02-22 四川大学 Transfer device for matching digital three-dimensional images of face and three-dimensional images of upper jaw dentition
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US5967777A (en) * 1997-11-24 1999-10-19 Klein; Michael Surgical template assembly and method for drilling and installing dental implants
EP1030598A1 (en) * 1997-11-24 2000-08-30 Michael Klein Surgical template assembly and method for drilling and installingdental implants
EP1030598A4 (en) * 1997-11-24 2003-06-18 Michael Klein Surgical template assembly and method for drilling and installingdental implants
WO1999026540A1 (en) * 1997-11-24 1999-06-03 Michael Klein Surgical template assembly and method for drilling and installingdental implants
WO2001087178A1 (en) * 2000-05-17 2001-11-22 Neuschaefer Gerd Device for planning and drilling implant supports in the human jaw
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US8419426B2 (en) 2007-07-23 2013-04-16 Hospices Civils De Lyon Device for positioning and immobilizing a surgical guide in a patient's mouth
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US10240919B2 (en) 2009-11-20 2019-03-26 Dirk Peter Leenheer Method for making a numerical three-dimensional model of a structure of soft and hard parts, three-dimensional model and carrier
US10251723B2 (en) 2013-11-25 2019-04-09 Prometheus Surgical Limited Method and apparatus for use in the production of a surgical guide
US10835343B2 (en) 2013-11-25 2020-11-17 Prometheus Surgical Limited Method and apparatus for use in the production of a surgical guide
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CN106419951B (en) * 2016-09-27 2023-03-14 四川大学 Matching transfer device for facial digital three-dimensional image and maxillofacial digital three-dimensional image

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FR2705027B1 (en) 1995-07-28

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