WO1995000079A1 - Positioning apparatus used in dentistry - Google Patents

Positioning apparatus used in dentistry Download PDF

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Publication number
WO1995000079A1
WO1995000079A1 PCT/FR1994/000701 FR9400701W WO9500079A1 WO 1995000079 A1 WO1995000079 A1 WO 1995000079A1 FR 9400701 W FR9400701 W FR 9400701W WO 9500079 A1 WO9500079 A1 WO 9500079A1
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WO
WIPO (PCT)
Prior art keywords
axis
around
horizontal
reference point
tool holder
Prior art date
Application number
PCT/FR1994/000701
Other languages
French (fr)
Inventor
Alain-Pierre Huet
Original Assignee
Huet Alain Pierre
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 Huet Alain Pierre filed Critical Huet Alain Pierre
Publication of WO1995000079A1 publication Critical patent/WO1995000079A1/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
    • A61C13/00—Dental prostheses; Making same
    • A61C13/12—Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
    • A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
    • A61C7/14—Brackets; Fixing brackets to teeth
    • A61C7/146—Positioning or placement of brackets; Tools therefor

Definitions

  • the present invention relates to an apparatus for positioning, in three dimensions, a tool holder, usable in dentistry.
  • Orthodontics is the branch of dental surgery that deals with bad tooth positions and associated corrective therapy.
  • orthodontists commonly use a mechanical system which comprises, on the one hand, parts or “attachments” glued to the teeth whose position is to be corrected, and, on the other hand, an element independent of the tooth, constituted by an orthodontic arch which is embedded in grooves provided in the various attachments glued to the teeth.
  • This arc made up of an elastic metal wire, exerts on the teeth, by means of the attachments glued in appropriate positions, individual forces which cause a progressive displacement of each tooth towards the ideal position which it must occupy at the end. treatment and which ensures a perfect dental arch.
  • the present invention relates to a device of particularly simple design, easy to maneuver and which can be used in particular to allow an orthodontist to easily and quickly place attachments on the teeth of a jaw, in order to remedy the bad positions of these teeth , or to take measurements or carry out other types of work.
  • this positioning device in three dimensions, of a tool holder, usable in dentistry, is characterized in that it comprises, at its lower part, a horizontal base above which is mounted movable, along at least two axes, preferably three, perpendicular to each other, namely two horizontal axes and a vertical axis, a movable plate intended to support a part on which work in dentistry is to be carried out, and, at its upper part, an articulated assembly which is arranged so as to allow the tool holder to move, in all directions of space, in such a way that the end of the tool which it carries is always located in a fixed reference point for all operations to be performed.
  • the apparatus which is shown in the drawing, comprises, at its lower part, a horizontal base 1 above which is mounted a movable plate 2 intended to support a part on which a certain work must be carried out.
  • dentistry such as a provisional model.
  • a “provisional model” corresponds, in orthodontics, to an ideal dental arch that one seeks to obtain, at the end of treatment, from a dental arch whose teeth have positional defects.
  • a plaster molding of the dental arch to be treated is formed, that is to say comprising teeth which are not in the correct positions, the individual teeth of the dental arch molding are separated and glued against each other. the others so as to reconstitute a correct dental arch constituting the "provisional model".
  • the apparatus according to the invention can be used, in particular, to allow an orthodontist to easily set up, with correct angulation in space, the individual attachments on the various teeth of a provisional model as well reconstructed.
  • the plate 2 is mounted movably on the base 1 in three directions perpendicular to each other, namely a first horizontal direction xx ', a second horizontal direction yy' perpendicular to the previous one and a third vertical direction zz '.
  • the displacement of the movable plate 2 in the three aforementioned directions can be controlled by mechanisms well known in the art, indicated respectively by the references 3.x, 3 ⁇ _ and 3.z. on the drawing. To mechanisms 3.x, _3y_, 3.z.
  • a comparator and calipers interfaces with a compatible computer, for carrying out the measurement of the movements of the plate 2 in the three directions xx ′, yy ′ and zz ′ and for convert this data to an ASCII file.
  • the apparatus 1 also comprises, at its upper part, an articulated assembly 4 which is arranged so as to allow the displacement of a tool holder 5, in all directions of space, but in such a way than the end of the tool 5a. that it carries, is always at a fixed point 0, serving as a reference point for all the operations carried out.
  • Tool 5a can be, depending on the applications of the device, an attachment holder, when the device is used to glue attachments on the teeth of a provisional model, or even a needle when used as an instrument of measurement.
  • the tool 5a could also be a rotary tool such as a cutter driven by a turbine.
  • the articulated assembly 4 comprises two opposite uprights 6 and 7, extending vertically from the base 1 to which they are fixed and which constitute a support for a first movable element constituted, for example, by a cradle 8 mounted at pivoting on the upper ends of the uprights 6 and 7, around a first horizontal axis XX ', parallel to the horizontal direction xx' of the movement of the lower workpiece carrier 2 and passing through the reference point O.
  • the cradle 8 has a general U-shape and it has a core 8a., parallel to the first horizontal axis XX 'and which is integral, at its ends, with two wings 8b_, 8ç_, perpendicular to the core 8a., of the same length, extending to the upper ends of the uprights 6 and 7 on which they are articulated around the first axis XX '.
  • the articulated assembly 4 also comprises a second movable element constituted, for example, by a bracket 9 comprising two branches 9a. and 9b_.
  • This bracket 9 is mounted above the cradle 8 and its first branch 9a- which extends downwards, is articulated, at its lower end, on the core 8a. of the cradle 8, so as to pivot around a second axis YY 'perpendicular to the core 8, therefore to the axis XX', and passing through the reference point O.
  • the second branch 9b of the bracket 9 extends above the reference point 0 and on its end is pivotally mounted, around a third axis ZZ 'perpendicular to the second axis YY' and passing through the reference point 0, a third mobile element constituted by a radial arm 11, parallel to the second branch 9b of the bracket 9, pressed against the latter and rotating around the axis ZZ '.
  • the tool holder 5 can be mounted perpendicular to the radial arm 11 either directly on this arm, or by means of an intermediate support 12 integral with the arm 11.
  • This support 12 comprises a bar 13 extending the arm 11 downward, inclined at 45 ° and which carries, at its lower end, a cylindrical body 14 extending downward, perpendicular to the bar 13 and mounted for rotation on this bar around its axis AA 'which is perpendicular to the plane of the bar 13.
  • the cylindrical body 14, which is rotatably mounted on the bar 13, carries, at its lower end, a lug 15 which is inclined at 45 ° relative to the cylindrical body 14 and which constitutes a support for the tool holder 5.
  • the elements 12,13,14,15 are dimensioned so that the axis AA 'of the support 14 which constitutes a fourth pivot axis for the movement of the tool holder 5 also passes through the reference point O where the end of the tool 5a is located. used. From the above description, it can be seen that the apparatus according to the invention makes it possible to easily place the tool holder 5 and the tool 5a. in any desired position in space, relative to a part placed on the lower plate 2, the end of the tool 5a. always remaining at the reference point 0 whatever the orientation given to the tool 5a.
  • the plate 2 is mounted mobile on the base 1 in only two directions located in the vertical plane formed by the axes yy 'and zz'.
  • the displacement of the plate 2, in the only horizontal plane is then obtained by the combination of a linear advance along the axis yy 'and a rotation of the axis zz'.
  • This simplified variant of the appliance is particularly suitable for locating and installing unitary elements in orthodontics
  • the tool 5a. can be a support for an attachment intended to be glued to individual teeth of a provisional model, or even a simple needle, when the device is used as a measuring instrument. In the latter case it makes it possible to note the coordinates of the center of gravity of the groove of each attachment and the layout of the "charter" passing through all the points raised, that is to say by all the centers of gravity of the grooves of attachments, is easily carried out by any current plotter software.
  • Tool 5a. can also be constituted by a cutter driven by a turbine housed in the body 5 of the tool holder.

Abstract

Apparatus for positioning, in the three dimensions, a tool-holder (5), usable in dentistry and comprising, at its lower portion, a horizontal base (1) on top of which is movably mounted along two axes, preferably three axes perpendicular between each other - two horizontal axes (xx', yy') and one vertical axis (zz'), - a movable platen (2) intended to support a part on which a dentistry work has to be performed and, at its upper portion, a hinged assembly (4) which is so arranged as to provide for the displacement of the tool holder (5) in all space directions, so that the extremity of the tool (5a) which is carried is always situated on the fixed reference point (O) for all operations to be carried out.

Description

APPAREIL DE MISE EN POSITION UTILISABLE EN ART DENTAIRE POSITIONING APPARATUS FOR USE IN DENTAL ART
La présente invention concerne un appareil de mise en position, dans les trois dimensions, d'un porte-outil, utilisable en art dentaire.The present invention relates to an apparatus for positioning, in three dimensions, a tool holder, usable in dentistry.
L'orthodontie est la branche de la chirurgie dentaire gui traite des mauvaises positions des dents et de la thérapeutique corrective associée. Pour corriger les mauvaises positions des dents, les orthodontistes utilisent couramment un système mécanique qui comprend, d'une part, des pièces ou "attachements" collés aux dents dont on veut corriger la position, et, d'autre part, un élément indépendant de la dent, constitué par un arc orthodontique qui s'encastre dans des gorges prévues dans les divers attachements collés aux dents. Cet arc, constitué d'un fil métallique élastique, exerce sur les dents, par l'intermédiaire des attachements collés dans des positions appropriées, des forces individuelles qui provoquent un déplacement progressif de chaque dent vers la position idéale qu'elle doit occuper en fin de traitement et qui assure une arcade dentaire parfaite. La présente invention concerne un appareil de conception particulièrement simple, facile à manoeuvrer et qui peut être notamment utilisé pour permettre à un orthodontiste de placer aisément et rapidement des attachements sur les dents d'une mâchoire, en vue de remédier aux mauvaises positions de ces dents, ou bien encore de relever des mesures ou d'effectuer d'autres types de travaux.Orthodontics is the branch of dental surgery that deals with bad tooth positions and associated corrective therapy. To correct the wrong positions of the teeth, orthodontists commonly use a mechanical system which comprises, on the one hand, parts or "attachments" glued to the teeth whose position is to be corrected, and, on the other hand, an element independent of the tooth, constituted by an orthodontic arch which is embedded in grooves provided in the various attachments glued to the teeth. This arc, made up of an elastic metal wire, exerts on the teeth, by means of the attachments glued in appropriate positions, individual forces which cause a progressive displacement of each tooth towards the ideal position which it must occupy at the end. treatment and which ensures a perfect dental arch. The present invention relates to a device of particularly simple design, easy to maneuver and which can be used in particular to allow an orthodontist to easily and quickly place attachments on the teeth of a jaw, in order to remedy the bad positions of these teeth , or to take measurements or carry out other types of work.
A cet effet, cet appareil de mise en position, dans les trois dimensions, d'un porte-outil, utilisable en art dentaire, est caractérisé en ce qu'il comprend, à sa partie inférieure, une embase horizontale au-dessus de laquelle est montée mobile, suivant deux axes au moins, préférentiellement trois, perpendiculaires entre eux, à savoir deux axes horizontaux et un axe vertical, une platine mobile destinée à supporter une pièce sur laquelle doit être effectué un travail en art dentaire, et, à sa partie supérieure, un ensemble articulé qui est agencé de manière à permettre le déplacement du porte-outil, dans toutes les directions de l'espace, de telle façon que l'extrémité de l'outil qu'il porte se trouve toujours situé en un point de référence fixe pour toutes les opérations à effectuer.To this end, this positioning device, in three dimensions, of a tool holder, usable in dentistry, is characterized in that it comprises, at its lower part, a horizontal base above which is mounted movable, along at least two axes, preferably three, perpendicular to each other, namely two horizontal axes and a vertical axis, a movable plate intended to support a part on which work in dentistry is to be carried out, and, at its upper part, an articulated assembly which is arranged so as to allow the tool holder to move, in all directions of space, in such a way that the end of the tool which it carries is always located in a fixed reference point for all operations to be performed.
On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé qui est une vue en perspective d'un appareil de mise en position d'un- porte- outil suivant l'invention.An embodiment of the present invention will be described below, by way of non-limiting example, with reference to the appended drawing which is a perspective view of an apparatus for positioning a tool holder. according to the invention.
L'appareil suivant l'invention qui est représenté sur le dessin, comprend, à sa partie inférieure, une embase horizontale 1 au-dessus de laquelle est montée une platine mobile 2 destinée à supporter une pièce sur laquelle doit être effectué un certain travail en art dentaire, tel qu'une maquette prévisionnelle. Une "maquette prévisionnelle" correspond, en orthodontie, à une arcade dentaire idéale qu'on cherche à obtenir, en fin de traitement, à partir d'une arcade dentaire dont les dents présentent des défauts de position. A cet effet on constitue un moulage en plâtre de l'arcade dentaire à traiter c'est à dire comportant des dents se trouvant des positions non correctes, on sépare les dents individuelles du moulage de l'arcade dentaire et on les colle les unes contre les autres de manière à reconstituer une arcade dentaire correcte constituant la "maquette prévisionnelle". Ensuite l'orthodontiste colle, sur la face externe (vestibulaire) ou interne (linguale) de chaque dent de la maquette prévisionnelle, un attachement destiné à retransmettre à la dent la force exercée par l'arc tuteur qui agit individuellement sur toutes les dents, pour les faire passer progressivement dans leur position correcte. L'appareil suivant l'invention peut être utilisé, notamment, pour permettre à un orthodontiste de mettre aisément en place, avec une angulation correcte dans l'espace, les attachements individuels sur les diverses dents d'une maquette prévisionnelle ainsi reconstituée.The apparatus according to the invention which is shown in the drawing, comprises, at its lower part, a horizontal base 1 above which is mounted a movable plate 2 intended to support a part on which a certain work must be carried out. dentistry, such as a provisional model. A "provisional model" corresponds, in orthodontics, to an ideal dental arch that one seeks to obtain, at the end of treatment, from a dental arch whose teeth have positional defects. For this purpose, a plaster molding of the dental arch to be treated is formed, that is to say comprising teeth which are not in the correct positions, the individual teeth of the dental arch molding are separated and glued against each other. the others so as to reconstitute a correct dental arch constituting the "provisional model". Then the orthodontist sticks, on the external (vestibular) or internal (lingual) face of each tooth of the provisional model, an attachment intended to retransmit to the tooth the force exerted by the supporting arch which acts individually on all the teeth, to move them gradually into their correct position. The apparatus according to the invention can be used, in particular, to allow an orthodontist to easily set up, with correct angulation in space, the individual attachments on the various teeth of a provisional model as well reconstructed.
La platine 2 est montée mobile sur l'embase 1 dans trois directions perpendiculaires entre elles, à savoir une première direction horizontale xx' , une deuxième direction horizontale yy' perpendiculaire à la précédente et une troisième direction verticale zz'. Le déplacement de la platine mobile 2 dans les trois directions précitées peut être commandé par des mécanismes bien connus dans la technique, indiqués respectivement par les références 3.x, 3γ_ et 3.z. sur le dessin. Aux mécanismes 3.x,_3y_,3.z. sont associés des moyens bien connus dans la technique, tels qu'un comparateur et des pieds à coulisse interfaces avec un ordinateur compatible, pour effectuer le relèvement des déplacements de la platine 2 dans les trois directions xx' ,yy' et zz' et pour convertir ces données en fichier ASCII.The plate 2 is mounted movably on the base 1 in three directions perpendicular to each other, namely a first horizontal direction xx ', a second horizontal direction yy' perpendicular to the previous one and a third vertical direction zz '. The displacement of the movable plate 2 in the three aforementioned directions can be controlled by mechanisms well known in the art, indicated respectively by the references 3.x, 3γ_ and 3.z. on the drawing. To mechanisms 3.x, _3y_, 3.z. are associated with means well known in the art, such as a comparator and calipers interfaces with a compatible computer, for carrying out the measurement of the movements of the plate 2 in the three directions xx ′, yy ′ and zz ′ and for convert this data to an ASCII file.
L'appareil 1 suivant l'invention comporte également, a sa partie supérieure, un ensemble articulé 4 qui est agencé de manière à permettre le déplacement d'un porte- outil 5, dans toutes les directions de l'espace, mais de telle façon que l'extrémité de l'outil 5a. qu'il porte, se trouve toujours en un point fixe 0, servant de point de référence pour toutes les opérations effectuées. L'outil 5a. peut être, suivant les applications de l'appareil, un porte-attachement, lorsque l'appareil est utilisé pour coller des attachements sur les dents d'une maquette prévisionnelle, ou bien encore un pointeau lorsqu'il est utilisé en tant qu'instrument de mesure. L'outil 5a, peut être aussi un outil rotatif tel qu'une fraise entraînée par une turbine.The apparatus 1 according to the invention also comprises, at its upper part, an articulated assembly 4 which is arranged so as to allow the displacement of a tool holder 5, in all directions of space, but in such a way than the end of the tool 5a. that it carries, is always at a fixed point 0, serving as a reference point for all the operations carried out. Tool 5a. can be, depending on the applications of the device, an attachment holder, when the device is used to glue attachments on the teeth of a provisional model, or even a needle when used as an instrument of measurement. The tool 5a, could also be a rotary tool such as a cutter driven by a turbine.
L'ensemble articulé 4 comprend deux montants opposés 6 et 7, s'étendant verticalement à partir de 1'embase 1 à laquelle ils sont fixés et qui constituent un support pour un premier élément mobile constitué, par exemple, par un berceau 8 monté à pivotement sur les extrémités supérieures des montants 6 et 7, autour d'un premier axe horizontal XX', parallèle à la direction horizontale xx' du déplacement de la platine inférieure porte-pièce 2 et passant par le point de référence O. Le berceau 8 a une forme générale en U et il comporte une âme 8a., parallèle au premier axe horizontal XX' et qui est solidaire, à ses extrémités, de deux ailes 8b_,8ç_, perpendiculaires à l'âme 8a., de même longueur, s'étendant jusqu'aux extrémités supérieures des montants 6 et 7 sur lesquels elles sont articulées autour du premier axe XX' .The articulated assembly 4 comprises two opposite uprights 6 and 7, extending vertically from the base 1 to which they are fixed and which constitute a support for a first movable element constituted, for example, by a cradle 8 mounted at pivoting on the upper ends of the uprights 6 and 7, around a first horizontal axis XX ', parallel to the horizontal direction xx' of the movement of the lower workpiece carrier 2 and passing through the reference point O. The cradle 8 has a general U-shape and it has a core 8a., parallel to the first horizontal axis XX 'and which is integral, at its ends, with two wings 8b_, 8ç_, perpendicular to the core 8a., of the same length, extending to the upper ends of the uprights 6 and 7 on which they are articulated around the first axis XX '.
L'ensemble articulé 4 comporte également un deuxième élément mobile constitué, par exemple, par une équerre 9 comprenant deux branches 9a. et 9b_. Cette équerre 9 est montée au-dessus du berceau 8 et sa première branche 9a- qui s'étend vers le bas, est articulée, à son extrémité inférieure, sur l'âme 8a. du berceau 8, de manière à pivoter autour d'un deuxième axe YY' perpendiculaire à l'âme 8, donc à l'axe XX', et passant par le point de référence O.The articulated assembly 4 also comprises a second movable element constituted, for example, by a bracket 9 comprising two branches 9a. and 9b_. This bracket 9 is mounted above the cradle 8 and its first branch 9a- which extends downwards, is articulated, at its lower end, on the core 8a. of the cradle 8, so as to pivot around a second axis YY 'perpendicular to the core 8, therefore to the axis XX', and passing through the reference point O.
La seconde branche 9b de l'équerre 9 s'étend au- dessus du point de référence 0 et sur son extrémité est monté à pivotement, autour d'un troisième axe ZZ' perpendiculaire au deuxième axe YY' et passant par le point de référence 0, un troisième élément mobile constitué par un bras radial 11, parallèle à la seconde branche 9b de l'équerre 9, plaqué contre celle-ci et tournant autour de l'axe ZZ'. Le porte-outil 5 peut être monté perpendiculairement au bras radial 11 soit directement sur ce bras, soit au moyen d'un support intermédiaire 12 solidaire du bras 11. Ce support 12 comprend une barre 13 prolongeant le bras 11 vers le bas, inclinée à 45° et qui porte, à son extrémité inférieure, un corps cylindrique 14 s'étendant vers le bas, perpendiculaire à la barre 13 et monté à rotation sur cette barre autour de son axe AA' qui est perpendiculaire au plan de la barre 13. Le corps cylindrique 14, qui est monté à rotation sur la barre 13, porte, à son extrémité inférieure, une patte 15 qui est inclinée à 45° par rapport au corps cylindrique 14 et qui constitue un support pour le porte-outil 5. Les éléments 12,13,14,15 sont dimensionnés de telle façon que l'axe AA' du support 14 qui constitue un quatrième axe de pivotement pour le déplacement du porte-outil 5 passe également par le point de référence O où se trouve l'extrémité de l'outil 5a. utilisé. D'après la description qui précède, on peut voir que l'appareil suivant l'invention permet de placer aisément le porte-outil 5 et l'outil 5a. dans n'importe quelle position désirée dans l'espace, par rapport à une pièce placée sur la platine inférieure 2, l'extrémité de l'outil 5a. restant toujours située au point de référence 0 quelle que soit l'orientation donnée à l'outil 5a..The second branch 9b of the bracket 9 extends above the reference point 0 and on its end is pivotally mounted, around a third axis ZZ 'perpendicular to the second axis YY' and passing through the reference point 0, a third mobile element constituted by a radial arm 11, parallel to the second branch 9b of the bracket 9, pressed against the latter and rotating around the axis ZZ '. The tool holder 5 can be mounted perpendicular to the radial arm 11 either directly on this arm, or by means of an intermediate support 12 integral with the arm 11. This support 12 comprises a bar 13 extending the arm 11 downward, inclined at 45 ° and which carries, at its lower end, a cylindrical body 14 extending downward, perpendicular to the bar 13 and mounted for rotation on this bar around its axis AA 'which is perpendicular to the plane of the bar 13. The cylindrical body 14, which is rotatably mounted on the bar 13, carries, at its lower end, a lug 15 which is inclined at 45 ° relative to the cylindrical body 14 and which constitutes a support for the tool holder 5. The elements 12,13,14,15 are dimensioned so that the axis AA 'of the support 14 which constitutes a fourth pivot axis for the movement of the tool holder 5 also passes through the reference point O where the end of the tool 5a is located. used. From the above description, it can be seen that the apparatus according to the invention makes it possible to easily place the tool holder 5 and the tool 5a. in any desired position in space, relative to a part placed on the lower plate 2, the end of the tool 5a. always remaining at the reference point 0 whatever the orientation given to the tool 5a.
Selon une autre variante simplifiée de l'appareil selon l'invention, la platine 2 est montée mobile sur l'embase 1 dans seulement deux directions situées dans le plan vertical formé par les axes yy' et zz'. Le déplacement de la platine 2, dans le seul plan horizontal est alors obtenu par la combinaison d'une avance linéaire selon l'axe yy' et d'une rotation d'axe zz'. Cette variante simplifiée de l'appareil est particulièrement adaptée pour le repérage et la mise en place d'élément unitaire en orthodontieAccording to another simplified variant of the device according to the invention, the plate 2 is mounted mobile on the base 1 in only two directions located in the vertical plane formed by the axes yy 'and zz'. The displacement of the plate 2, in the only horizontal plane is then obtained by the combination of a linear advance along the axis yy 'and a rotation of the axis zz'. This simplified variant of the appliance is particularly suitable for locating and installing unitary elements in orthodontics
Ainsi qu'il a été décrit précédemment, l'outil 5a. peut être un support pour un attachement destiné à être collé à des dents individuelles d'une maquette prévisionnelle, ou bien encore un simple pointeau, lorsque l'appareil est utilisé en tant qu'instrument de mesure. Dans ce dernier cas il permet de relever les coordonnées du centre de gravité de la gorge de chaque attachement et le tracé de la "charte" passant par tous les points relevés, c'est-à-dire par tous les centres de gravité des gorges des attachements, est réalisé aisément par tout logiciel traceur de courbe courant. L'outil 5a. peut être aussi constitué par une fraise entraînée par une turbine logée dans le corps 5 du porte-outil. As described above, the tool 5a. can be a support for an attachment intended to be glued to individual teeth of a provisional model, or even a simple needle, when the device is used as a measuring instrument. In the latter case it makes it possible to note the coordinates of the center of gravity of the groove of each attachment and the layout of the "charter" passing through all the points raised, that is to say by all the centers of gravity of the grooves of attachments, is easily carried out by any current plotter software. Tool 5a. can also be constituted by a cutter driven by a turbine housed in the body 5 of the tool holder.

Claims

REVENDICATIONS
1 - 1 - Appareil de mise en position, dans les trois dimensions, d'un porte-outil (5), utilisable en art dentaire, caractérisé en ce qu'il comprend, à sa partie inférieure, une embase horizontale (1) au-dessus de laquelle est montée mobile, suivant deux axes, préférentiellement trois, perpendiculaires entre eux, à savoir deux axes horizontaux (xx',yy') et un axe vertical (zz'), une platine mobile (2) destinée à supporter une pièce sur laquelle doit être effectué un travail en art dentaire, et, à sa partie supérieure, un ensemble articulé (4) qui est agencé de manière à permettre le déplacement du porte-outil (5), dans toutes les directions de l'espace, de telle façon que l'extrémité de l'outil (5a.) qu'il porte se trouve toujours situé en un point de référence fixe (O) pour toutes les opérations à effectuer.1 - 1 - Apparatus for positioning, in three dimensions, a tool holder (5), usable in dentistry, characterized in that it comprises, at its lower part, a horizontal base (1) at above which is mounted mobile, along two axes, preferably three, perpendicular to each other, namely two horizontal axes (xx ', yy') and a vertical axis (zz '), a mobile plate (2) intended to support a part on which work in dentistry is to be carried out, and, at its upper part, an articulated assembly (4) which is arranged so as to allow the movement of the tool holder (5), in all directions of space , so that the end of the tool (5a.) which it carries is always located at a fixed reference point (O) for all the operations to be carried out.
2 - Appareil selon la revendication 1 caratérisé en ce que la platine mobile (2) est déplacée dans le plan horizontal par la combinaison d'une avance linéaire solon un axe horizontal (yy' ) et d'une rotation d'axe vertical (zz' ) .2 - Apparatus according to claim 1 characterized in that the movable plate (2) is moved in the horizontal plane by the combination of a linear advance on a horizontal axis (yy ') and a rotation of a vertical axis (zz ').
3 - Appareil suivant l'une quelconque des revendications 1 ou 2 caractérisé en ce que l'ensemble articulé (4) comprend un support (6,7) s'étendant à partir de l'embase (1), définissant un premier axe horizontal de pivotement (XX') parallèle à la première direction horizontale (xx') du déplacement de la platine porte-pièce (2) et passant par le point de référence (O), un premier élément mobile (8) monté à pivotement autour du premier axe. horizontal (XX'), un deuxième élément mobile (9) monté à pivotement sur le premier élément (8) , autour d'un deuxième axe (YY' ) perpendiculaire au premier axe ( X' ) et passant par le point de référence (O) et un troisième élément mobile (11,12) monté à pivotement sur le deuxième élément (9) autour d'un troisième axe (ZZ') perpendiculaire au deuxième axe (YY' ) et passant par le point de référence (0), le troisième élément (11,12) supportant le porte-outil (5). 4 - Appareil suivant la revendication 3 caractérisé en ce que le premier élément mobile (8) est constitué par un berceau monté à pivotement, autour du premier axe horizontal (XX'), sur les extrémités supérieures de montants (6,7) fixés verticalement à l'embase (1), ce berceau (8) ayant une forme générale en U et comportant une âme (8a.), parallèle au premier axe horizontal (XX') et qui est solidaire, à ses extrémités, de deux ailes (8b,8ç_) perpendiculaires à l'âme (8a,), de même longueur, s'étendant jusqu'aux extrémités supérieures des montants (6,7) sur lesquels elles sont articulées autour du premier axe (XX').3 - Apparatus according to any one of claims 1 or 2 characterized in that the articulated assembly (4) comprises a support (6,7) extending from the base (1), defining a first horizontal axis pivot (XX ') parallel to the first horizontal direction (xx') of the movement of the work holding plate (2) and passing through the reference point (O), a first mobile element (8) pivotally mounted around the first axis. horizontal (XX '), a second movable element (9) pivotally mounted on the first element (8), around a second axis (YY') perpendicular to the first axis (X ') and passing through the reference point ( O) and a third mobile element (11,12) pivotally mounted on the second element (9) around a third axis (ZZ ') perpendicular to the second axis (YY') and passing through the reference point (0) , the third element (11,12) supporting the tool holder (5). 4 - Apparatus according to claim 3 characterized in that the first movable element (8) is constituted by a cradle pivotally mounted, around the first horizontal axis (XX '), on the upper ends of uprights (6,7) fixed vertically at the base (1), this cradle (8) having a general U-shape and comprising a core (8a.), parallel to the first horizontal axis (XX ') and which is integral, at its ends, with two wings ( 8b, 8ç_) perpendicular to the core (8a,), of the same length, extending to the upper ends of the uprights (6,7) on which they are articulated around the first axis (XX ').
5 - Appareil suivant la revendication 4 caractérisé en ce que le deuxième élément mobile (9) est constitué par une équerre montée au-dessus du berceau (8), cette équerre (9) comportant une première branche (9a.) qui est articulée sur l'âme (8a.) du berceau (8) de manière à pivoter autour du deuxième axe (YY'), et une seconde branche (9b_) à l'extrémité duquel est monté le troisième élément (11,12) pivotant autour du troisième axe (ZZ') passant par le point de référence (O) et supportant le porte-outil (5).5 - Apparatus according to claim 4 characterized in that the second movable element (9) is constituted by a bracket mounted above the cradle (8), this bracket (9) having a first branch (9a.) Which is articulated on the core (8a.) of the cradle (8) so as to pivot around the second axis (YY '), and a second branch (9b_) at the end of which is mounted the third element (11,12) pivoting around the third axis (ZZ ') passing through the reference point (O) and supporting the tool holder (5).
6 - Appareil suivant la revendication 5 caractérisé en ce que le troisième élément mobile est constitué par un bras radial (11) parallèle à la seconde branche de 1'équerre (9) et tournant autour du troisième axe (ZZ').6 - Apparatus according to claim 5 characterized in that the third movable member is constituted by a radial arm (11) parallel to the second branch of the bracket (9) and rotating around the third axis (ZZ ').
7 - Appareil suivant la revendication 5 caractérisé en ce que le troisième élément mobile comprend un bras radial (11)/ parallèle à la seconde branche (9b) de 1'équerre (9) et tournant autour du troisième axe (ZZ') et un support intermédiaire (12) solidaire du bras radial (11), ce support comprenant une barre (13) prolongeant le bras radial (H), inclinée à 45° et qui porte, à son extrémité, un corps cylindrique (14) perpendiculaire à la barre (13) et monté à rotation sur cette barre autour de son axe (A) qui est perpendiculaire au plan de la barre7 - Apparatus according to claim 5 characterized in that the third movable element comprises a radial arm (11) / parallel to the second branch (9b) of the bracket (9) and rotating around the third axis (ZZ ') and a intermediate support (12) integral with the radial arm (11), this support comprising a bar (13) extending the radial arm (H), inclined at 45 ° and which carries, at its end, a cylindrical body (14) perpendicular to the bar (13) and rotatably mounted on this bar about its axis (A) which is perpendicular to the plane of the bar
(13) et qui passe par le point de référence (0), le corps(13) and which passes through the reference point (0), the body
(14) portant, à son extrémité, une patte (15) qui est inclinée à 45° par rapport au corps (14) et qui constitue un support pour le porte-outil (5). (14) carrying, at its end, a tab (15) which is inclined at 45 ° relative to the body (14) and which constitutes a support for the tool holder (5).
PCT/FR1994/000701 1993-06-17 1994-06-13 Positioning apparatus used in dentistry WO1995000079A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9307373A FR2706281B1 (en) 1993-06-17 1993-06-17 Positioning device usable in dentistry.
FR93/07373 1993-06-17

Publications (1)

Publication Number Publication Date
WO1995000079A1 true WO1995000079A1 (en) 1995-01-05

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Application Number Title Priority Date Filing Date
PCT/FR1994/000701 WO1995000079A1 (en) 1993-06-17 1994-06-13 Positioning apparatus used in dentistry

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FR (1) FR2706281B1 (en)
WO (1) WO1995000079A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009135513A1 (en) 2008-05-09 2009-11-12 Ady Palti Machining device for producing a drilling jig for dental implants

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE503072C2 (en) * 1994-07-04 1996-03-18 Nobelpharma Ab Method and apparatus utilizing one or more wire feed paths in the manufacture of artificial support organs for human body pairs
DE10309992A1 (en) 2003-02-28 2004-09-16 Med3D Gmbh Method and device for checking the position of drill sleeves
DE102005016396A1 (en) * 2005-04-08 2006-10-12 Dr.-Medic-Stom./Umf Temeschburg, Herbert Hatzlhoffer Work table for dental technicians

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448437A (en) * 1944-05-03 1948-08-31 Kaplan Abraham Dental appliance
FR2036992A1 (en) * 1969-04-29 1970-12-31 Narboni Victor
EP0285418A2 (en) * 1987-04-03 1988-10-05 Thomas D. Creekmore Placement apparatus for lingual and buccal brackets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2448437A (en) * 1944-05-03 1948-08-31 Kaplan Abraham Dental appliance
FR2036992A1 (en) * 1969-04-29 1970-12-31 Narboni Victor
EP0285418A2 (en) * 1987-04-03 1988-10-05 Thomas D. Creekmore Placement apparatus for lingual and buccal brackets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009135513A1 (en) 2008-05-09 2009-11-12 Ady Palti Machining device for producing a drilling jig for dental implants

Also Published As

Publication number Publication date
FR2706281B1 (en) 1995-08-25
FR2706281A1 (en) 1994-12-23

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