EP2779935A1 - Orthodontic appliance - Google Patents

Orthodontic appliance

Info

Publication number
EP2779935A1
EP2779935A1 EP12798826.9A EP12798826A EP2779935A1 EP 2779935 A1 EP2779935 A1 EP 2779935A1 EP 12798826 A EP12798826 A EP 12798826A EP 2779935 A1 EP2779935 A1 EP 2779935A1
Authority
EP
European Patent Office
Prior art keywords
rod
gutter
shape
jaw
mouth
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP12798826.9A
Other languages
German (de)
French (fr)
Inventor
Jean-Charles MORIN
Elie Callabe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pul Concept SAS
Original Assignee
Pul Concept SAS
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 Pul Concept SAS filed Critical Pul Concept SAS
Publication of EP2779935A1 publication Critical patent/EP2779935A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • A61C7/36—Devices acting between upper and lower teeth
    • 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
    • A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch

Definitions

  • the present invention relates to the field of orthodontic appliances.
  • a restraining device has two gutters to be arranged on the teeth, one on the upper teeth and the other on the lower teeth, and an element called connecting rod that connects them.
  • the device is used at night and the element called connecting rod prevents the jaws from moving while the gutters block the teeth in a good position. It should then be kept at night these devices of contention, removable or fixed, which prevent, mechanically, a recurrence of deformation.
  • the present invention aims to improve orthodontic appliances as they are known from the prior art, in particular providing care benefits and comfort of use while being particularly easy to implement and inexpensive.
  • the invention provides an orthodontic appliance of the type comprising a lower gutter, so that it is associated with the lower jaw, and an upper gutter, so that it is associated with the upper jaw.
  • a rod connects the lower gutter and the upper gutter, and this rod comprises in one piece a first attachment portion to the upper gutter and a second attachment portion to the lower gutter, and a central adjustment portion which extends from one to the other of these attachment portions.
  • the central adjustment portion has a corrugated shape and is conformable by deformation, by changing the shape of the corrugations, to obtain a variable length between the fixing portions.
  • the apparatus according to the invention may more particularly be used as a compression device, placed in the mouth of the patient in order to stabilize the orthodontic correction obtained during prior orthodontic treatment, by offering the possibility of a refined adjustment thereafter. at the patient's mouth, from this stabilization by modifications on the undulations formed on the stem.
  • the rod is conformable by plastic deformation to make an adjustment in alignment or approximation of the attachment portions.
  • the fact that the rod is initially wavy form allows adjustment in both directions, namely either spacing the jaws relative to each other, by clamping one of the corrugations to enlarge the rod, or in bringing these jaws closer together by performing an additional or more pronounced corrugation to narrow the rod.
  • these effects are obtained with a single rod construction which offers a simpler use for the practitioner at the time of installation, but especially simpler in its daily use by the patient.
  • the apparatus according to the invention can also be used for active devices, tending to promote the separation of the jaws from one another.
  • the rod is formed by a thermosensitive material which tends to return to its original shape under the effect of the heat of the mouth.
  • the fixing portions will be processed so that, unlike the wavy portion, they can keep their shape once the device in the mouth.
  • the central adjustment portion comprises successively a first straight portion which extends the first fixing portion and a second straight portion which extends the second fixing portion, and a portion having corrugations arranged between the two straight portions.
  • the corrugations extend below a main axis of the rod defined by the straight portions, while the fastening portions extend above this main axis.
  • This distribution on either side of the main axis of the rod, ensures that the corrugations do not come into contact with one of the jaws.
  • the first fixing portion has substantially the shape of an S pierced with a first eyelet
  • the second fixing portion has substantially the shape of a C pierced with a second eyelet.
  • each of the fixing portions of the rod on the corresponding gutters is carried out via a pin passing on the one hand in the eyelet of the fixing portion of the rod and on the other hand in a tube welded to the gutter, the pin having a thin rod adapted to be housed in the tube and at the end of which is mounted a ball abutting against the edges defining the eyelet.
  • the gutters are made by thermoforming and / or the connecting rod between the gutters is made of stainless steel.
  • the lower gutter and the upper gutter preferably have an arc shape adapted to cover respectively all the teeth of the lower jaw and the set of teeth of the upper jaw, and they are connected by two rods as described above and each arranged on one side of the mouth.
  • each of the rods used is independent of the other and that the adjustment on each side of the mouth by changing the corrugations may be different from one rod to another.
  • the invention also relates to a method of adjusting the position of an orthodontic bracing apparatus, in which a shaft having a corrugated shape is assembled to an upper trough and a lower trough, and in which the block thus formed is placed in the patient's mouth, overlapping the upper and lower gutters respectively on the rows of lower and upper teeth, and finally in which the length is adjusted between the attachment portions of the rod when the apparatus is in the mouth, modifying the shape of one of the corrugations of the central portion of adjustment of the rod.
  • FIG. 1 which illustrates an orthodontic appliance which comprises according to the invention two gutters arranged on the teeth and interconnected by a rod, the apparatus being here seen from the side and in position in the mouth of a patient, with closed jaws;
  • an orthodontic appliance 2 comprises a set of aligners connected by a corrugated rod 4.
  • a corrugated rod 4 In the following description, it will be describes a wavy stem, connecting on one side of the mouth the gutters. It will however be understood that advantageously, a rod is arranged substantially symmetrically, independently between the gutters on the other side of the mouth.
  • the gutters are made of resin and they have a shape obtained by thermoforming adapted to cover properly aligned teeth. They have in the bottom fingerprints for the passage of teeth so that the gutters are overlapping teeth. Reinforcements are embedded in each of these gutters.
  • An upper gutter 6 is thus arranged in overlapping of the teeth of the upper jaw, with an upper metal frame 7 which is integral with this upper gutter, while a lower gutter 8 is arranged symmetrically in overlapping teeth of the lower jaw, with a lower metal frame 9 which is integral with said lower channel.
  • the corrugated rod connects the two metal frames to block the relative propulsion of one jaw relative to the other.
  • the corrugated rod has ends adapted to be fixed respectively on one of the gutters and on the corresponding metal frame. An attachment point is thus determined on the lower gutter and an attachment point on the upper gutter, and the rod is disposed in the mouth to connect these determined attachment points. It is understood that the length of the rod corresponds to the distance between these two fixing points determined and that it may advantageously be made adjustments to this length of the rod, in one direction or the other to adjust in progress or away from the relative position of the gutters, and therefore the jaws relative to each other.
  • the rod is formed in one piece, which presents successively, from a first end adapted to be fixed on the upper channel to the opposite end, a first fixing portion 10, a central adjustment portion 12 and a second fixing portion 14.
  • the first fixing portion 10 has substantially the shape of an S and is pierced with a first lug 16, while the second fixing portion 14 has substantially the shape of a C and is pierced with a second eyelet 18.
  • the fixation of the rods of the device on the metal reinforcements is the same whether for attachment to the upper armature or to the lower armature.
  • the upper armature and the upper rod are fixed by means of a pin 20 passing on the one hand into the first eyelet 16 and being welded to the upper metal armature.
  • the pin is provided for this purpose a thin rod adapted to be accommodated in the tube and at the end of which is mounted a ball abutting against the edges defining the eyelet.
  • the lower rod is fixed to the frame of the lower channel by means of a pin 22 which is adapted to cooperate with the second eyelet 18 and with a tube welded to the lower metal frame.
  • the embedded reinforcement consists of a projecting plate from which a pin extends so as to serve as a point of attachment to the corresponding fixing portion of the rod.
  • the central adjustment portion 12 which extends between the two fixing portions of the rod. It comprises a first straight portion 24 which extends the first fixing portion and a second straight portion 26 which extends the second fixing portion, and a corrugated portion 28 disposed between the two straight portions.
  • the corrugated portion has undulations 29 which here form a W-shape and which extends between the straight portions which define the main axis 30 of the rod.
  • the W shape is obtained by two curved deformations of the stem. It is observed that (as can be seen in FIG.
  • the shank is formed of a semi-rigid steel, which allows both deformation of the waved portion by a clinician, but which does not deform under the effect of traction or compression generated by the relative movements of the jaws relative to each other.
  • the presence of the straight portions disposed between the attachment portions and the central adjustment portion allows this sufficient rigidity so that the assembly does not bend under the jaws efforts.
  • the gutters are thermoformed on the basis of an impression of the teeth taken previously. Their rigidity tends to hold the teeth in place when the gutters are placed in overlapping jaws.
  • the position of the upper jaw with respect to the lower jaw is known from the results of active jaw offset processing.
  • the length of the rod according to the invention is then calculated so that it can be fixed to the two jaws in such a way that good spacing is maintained, and a rod of this length is produced by deforming the central portion of the jaw. adjustment.
  • a rod is assembled at the upper gutter and the lower gutter.
  • the rod is attached to the metal frame of the upper gutter via a pin provided with a ball passing the eyelet and in the tube welded to the metal frame, while it is fixed to the metal frame of the lower gutter by means of a pin furnished with a ball passing through the eyelet and into the tube welded to the metal frame.
  • another rod is assembled on the other side of the gutters.
  • This provides a device for restraining a block, formed of an upper gutter and a lower gutter, connected by two substantially symmetrical corrugated rods. And we can put this block directly on the teeth by matching each of the gutters with one of the rows of teeth, as shown in Figure 1.
  • the wearer of the contention apparatus according to the invention can thus manipulate a single block to put or remove his apparatus.
  • the practitioner can perform an adjustment of the advancement of the jaws relative to each other, by deformation of the corrugated stem, ie by modifying the shape of the undulations. If for example the practitioner wishes to move the jaws away from one another, it achieves a crushing of one of the corrugations of the rod so that the distance between the two fastening parts grows. It is therefore interesting, as described above, to provide a depth of these corrugations adequate to the correct setting of the restraint device by the practitioner.
  • the compression device according to the invention has a single rod which makes it possible to keep the position of the jaws in relation to one another over time, while allowing lateral and sagittal play of the jaws, thanks to the forms fixing portions.
  • the invention allows independent adjustment on each side of the jaw, since it is possible for the practitioner to deform a corrugation on the rod disposed on the left side of the jaw for example, without doing so on the rod disposed of the right side.
  • the combinations for adjustment in position of the jaws relative to each other, particularly important in these contention methods, are thus multiple.
  • the rod 104 differs from the rod 4 described above in that the corrugations 129 do not extend on one side of the main axis 130 of the stem, but on both sides of this axis, with less marked deformation depths on each side.
  • the shape of the first attachment portion 1 10 and the length of the first right portion 124 may be different from those of the main embodiment to allow the establishment of the rod without it hinders the closure of the jaws.
  • the invention makes it possible to propose a compression device which stabilizes the orthodontic correction obtained during previous orthodontic treatment, and which also allows adjustment once in the patient's mouth to adapt more finely to the the advancement of the jaws relative to each other.
  • This adjustment is easily made by changes in the shape of the stem, right in the mouth of the patient.
  • the initial embodiment of the corrugated shape allows adjustment in both directions, either by spacing the jaws by the clamping of one of the corrugations to enlarge the rod, or by bringing the jaws closer together by performing an additional corrugation or more pronounced for shrink the stem.
  • the rod is formed of a thermosensitive material
  • the fixing portions are treated, for example by electric current, to make them lose their heat-sensitive character.
  • the heat that emerges generates the deformation of the central portion of adjustment.
  • the undulations diminish and the central portion tends to recover its elongated shape, by modifying the relative length between the two fixing points of the rod on the gutters, and thus by achieving a desired separation of the jaws relative to each other .

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

The invention relates to an orthodontic appliance in which a rod (4) connects a lower tray (8) linked with the lower jaw to an upper tray (6) linked with the upper jaw of the same patient. Said rod, which is a single part, comprises a first portion (10) for attachment to the upper tray and a second portion (14) for attachment to the lower tray, and a central portion for adjustment (12) that extends between the two attachment portions and presents an undulating shape. The central portion is capable of being deformed for moving the attachment portions closer together or further apart.

Description

Appareil orthodontique  Orthodontic appliance
La présente invention concerne le domaine des appareils orthodontiques. The present invention relates to the field of orthodontic appliances.
En orthodontie, on connaît des traitements des décalages maxillo-mandibulaires qui consistent à utiliser des appareils orthodontiques qui propulsent la mâchoire inférieure (celle que l'on appelle mandibule) vers l'avant ou vers l'arrière avec une prise d'appui sur la mâchoire supérieure (celle que l'on appelle maxillaire) . Le but est d'obtenir une stimulation de la croissance de la mâchoire inférieure vers l'avant ou vers l'arrière et une diminution de la croissance respectivement vers l'avant ou vers l'arrière de la mâchoire supérieure. In orthodontics, there are known treatments for maxillomandibular shifts which consist of using orthodontic appliances that propel the lower jaw (the so-called mandible) forward or backward with a bearing on the upper jaw (the so-called maxillary). The goal is to achieve growth stimulation of the lower jaw forwards or backwards and a decrease in the growth respectively forward or backward of the upper jaw.
On pratique également des traitements pour l'alignement correct des dents qui consistent à placer des attaches sur les dents et à les relier une par une par un fil à mémoire de forme qui tend, en recouvrant sa forme initiale, à aligner les attaches les unes par rapport aux autres et donc à aligner les dents associées les unes par rapport aux autres. There are also treatments for the correct alignment of the teeth which consist of placing fasteners on the teeth and connecting them one by one by a shape memory wire which tends, by covering its initial shape, to align the fasteners with each other. compared to others and thus to align the associated teeth with respect to each other.
Après le traitement, lorsque les appareils sont déposés, les dents et les mâchoires tendent à reprendre la position qu'elles avaient initialement. On prévoit donc de poser à ce moment des appareils de contention qui visent à pérenniser les résultats obtenus lors des traitements. Classiquement, un appareil de contention comporte deux gouttières à disposer sur les dents, l'une sur les dents supérieures et l'autre sur les dents inférieures, ainsi qu'un élément appelé bielle qui les relie. L'appareil est utilisé la nuit et l'élément appelé bielle empêche les mâchoires de se déplacer tandis que les gouttières bloquent les dents dans une bonne position. Il convient alors de garder la nuit ces appareils de contention, amovibles ou fixes, qui empêchent, mécaniquement, une récidive de déformation. After treatment, when the appliances are removed, the teeth and jaws tend to return to their original position. It is therefore planned to put at this time compression devices that aim to sustain the results obtained during treatments. Conventionally, a restraining device has two gutters to be arranged on the teeth, one on the upper teeth and the other on the lower teeth, and an element called connecting rod that connects them. The device is used at night and the element called connecting rod prevents the jaws from moving while the gutters block the teeth in a good position. It should then be kept at night these devices of contention, removable or fixed, which prevent, mechanically, a recurrence of deformation.
La présente invention vise à améliorer les appareils orthodontiques tels qu'ils sont connus de l'art antérieur, en assurant notamment des prestations de soin et un confort d'utilisation tout en étant particulièrement facile à mettre en place et peu coûteux. A cet effet, l'invention propose un appareil orthodontique du type comportant une gouttière inférieure, pour qu'elle soit associée à la mâchoire inférieure, et une gouttière supérieure, pour qu'elle soit associée à la mâchoire supérieure. Selon des caractéristiques particulièrement avantageuses de l'invention, une tige relie la gouttière inférieure et la gouttière supérieure, et cette tige comporte d'une seule pièce une première portion de fixation à la gouttière supérieure et une deuxième portion de fixation à la gouttière inférieure, ainsi qu'une portion centrale d'ajustement qui s'étend de l'une à l'autre de ces portions de fixation. La portion centrale d'ajustement présente une forme à ondulations et elle est conformable par déformation, par modification de la forme des ondulations, pour obtenir une longueur variable entre les portions de fixation. The present invention aims to improve orthodontic appliances as they are known from the prior art, in particular providing care benefits and comfort of use while being particularly easy to implement and inexpensive. For this purpose, the invention provides an orthodontic appliance of the type comprising a lower gutter, so that it is associated with the lower jaw, and an upper gutter, so that it is associated with the upper jaw. According to particularly advantageous features of the invention, a rod connects the lower gutter and the upper gutter, and this rod comprises in one piece a first attachment portion to the upper gutter and a second attachment portion to the lower gutter, and a central adjustment portion which extends from one to the other of these attachment portions. The central adjustment portion has a corrugated shape and is conformable by deformation, by changing the shape of the corrugations, to obtain a variable length between the fixing portions.
L'appareil suivant l'invention peut être plus particulièrement utilisé comme appareil de contention, disposé dans la bouche du patient pour permettre de stabiliser la correction orthodontique obtenue pendant un traitement orthodontique préalable, en offrant la possibilité par la suite d'un réglage affiné, à même la bouche du patient, de cette stabilisation par des modifications sur les ondulations formées sur la tige. La tige est conformable par déformation plastique pour réaliser un ajustement en alignement ou en rapprochement des portions de fixation. Le fait que la tige soit initialement de forme ondulée permet un réglage dans les deux sens, à savoir soit en écartement des mâchoires l'une par rapport à l'autre, par le pinçage d'une des ondulations pour agrandir la tige, soit en rapprochement de ces mâchoires par la réalisation d'une ondulation supplémentaire ou plus prononcée pour rétrécir la tige. Avantageusement, ces effets sont obtenus avec une construction à tige unique qui offre une utilisation plus simple pour le praticien au moment de la pose, mais surtout plus simple dans son usage quotidien par le patient. The apparatus according to the invention may more particularly be used as a compression device, placed in the mouth of the patient in order to stabilize the orthodontic correction obtained during prior orthodontic treatment, by offering the possibility of a refined adjustment thereafter. at the patient's mouth, from this stabilization by modifications on the undulations formed on the stem. The rod is conformable by plastic deformation to make an adjustment in alignment or approximation of the attachment portions. The fact that the rod is initially wavy form allows adjustment in both directions, namely either spacing the jaws relative to each other, by clamping one of the corrugations to enlarge the rod, or in bringing these jaws closer together by performing an additional or more pronounced corrugation to narrow the rod. Advantageously, these effects are obtained with a single rod construction which offers a simpler use for the practitioner at the time of installation, but especially simpler in its daily use by the patient.
L'appareil selon l'invention peut également être utilisé pour des appareils actifs, tendant à favoriser l'écartement des mâchoires l'une de l'autre. Dans ce cas, la tige est formée par un matériau thermosensible qui tend à retrouver sa forme d'origine sous l'effet de la chaleur de la bouche. Les portions de fixation seront traitées pour que, contrairement à la portion ondulée, elles puissent garder leurs formes une fois l'appareil dans la bouche. The apparatus according to the invention can also be used for active devices, tending to promote the separation of the jaws from one another. In this case, the rod is formed by a thermosensitive material which tends to return to its original shape under the effect of the heat of the mouth. The fixing portions will be processed so that, unlike the wavy portion, they can keep their shape once the device in the mouth.
Selon une caractéristique de l'invention, la portion centrale d'ajustement comporte successivement une première portion droite qui prolonge la première portion de fixation et une deuxième portion droite qui prolonge la deuxième portion de fixation, ainsi qu'une portion présentant des ondulations disposée entre les deux portions droites. Ainsi, on encadre la portion ondulée de la tige par des portions droites qui permettent de définir un axe principal de la tige pour apporter une certaine rigidité à l'ensemble de la tige, et qui permettent de bien centrer les ondulations pour qu'elles ne viennent pas en interférence avec les mâchoires. According to a characteristic of the invention, the central adjustment portion comprises successively a first straight portion which extends the first fixing portion and a second straight portion which extends the second fixing portion, and a portion having corrugations arranged between the two straight portions. Thus, we frame the corrugated portion of the rod by straight portions that define a main axis of the rod to provide some rigidity to the entire stem, and that allow to center the ripples so that they do not do not come into interference with the jaws.
Selon une caractéristique telle qu'elle est appliquée dans un mode de réalisation préféré de l'invention, les ondulations s'étendent au-dessous d'un axe principal de la tige défini par les portions droites, tandis que les portions de fixation s'étendent au-dessus de cet axe principal. On s'assure ainsi, par cette répartition de part et d'autre de l'axe principal de la tige, que les ondulations n'entrent pas en contact avec l'une des mâchoires. Selon des caractéristiques de l'invention, la première portion de fixation présente sensiblement la forme d'un S percé d'un premier œillet, tandis que la deuxième portion de fixation présente sensiblement la forme d'un C percé d'un deuxième œillet. La fixation de chacune des portions de fixation de la tige sur les gouttières correspondantes est réalisée par l'intermédiaire d'une épingle passant d'une part dans l'œillet de la portion de fixation de la tige et d'autre part dans un tube soudé à la gouttière, l'épingle comportant une tige fine adaptée à loger dans le tube et à l'extrémité de laquelle est montée une boule venant en butée contre les bords délimitant l'œillet. Selon différentes caractéristiques de l'invention, les gouttières sont réalisées par thermoformage et/ou la tige de liaison entre les gouttières est réalisée en acier inoxydable. According to a feature as applied in a preferred embodiment of the invention, the corrugations extend below a main axis of the rod defined by the straight portions, while the fastening portions extend above this main axis. This distribution, on either side of the main axis of the rod, ensures that the corrugations do not come into contact with one of the jaws. According to features of the invention, the first fixing portion has substantially the shape of an S pierced with a first eyelet, while the second fixing portion has substantially the shape of a C pierced with a second eyelet. Fixing each of the fixing portions of the rod on the corresponding gutters is carried out via a pin passing on the one hand in the eyelet of the fixing portion of the rod and on the other hand in a tube welded to the gutter, the pin having a thin rod adapted to be housed in the tube and at the end of which is mounted a ball abutting against the edges defining the eyelet. According to various features of the invention, the gutters are made by thermoforming and / or the connecting rod between the gutters is made of stainless steel.
D'autre part, la gouttière inférieure et la gouttière supérieure présentent de préférence une forme d'arc adaptée à recouvrir respectivement l'ensemble des dents de la mâchoire inférieure et l'ensemble des dents de la mâchoire supérieure, et elles sont reliées par deux tiges telles que décrites précédemment et disposées chacune d'un côté de la bouche. Ainsi, on assure la stabilisation de position des mâchoires des deux côtés de la bouche. On comprendra que chacune des tiges utilisées est indépendante de l'autre et que le réglage de chaque côté de la bouche par modification des ondulations peut être différent d'une tige à l'autre. On the other hand, the lower gutter and the upper gutter preferably have an arc shape adapted to cover respectively all the teeth of the lower jaw and the set of teeth of the upper jaw, and they are connected by two rods as described above and each arranged on one side of the mouth. Thus, it ensures the stabilization of the position of the jaws on both sides of the mouth. It will be understood that each of the rods used is independent of the other and that the adjustment on each side of the mouth by changing the corrugations may be different from one rod to another.
L'invention concerne également un procédé de réglage en position d'un appareil orthodontique de contention, dans lequel on assemble une tige présentant une forme ondulée à une gouttière supérieure et à une gouttière inférieure, puis dans lequel on place le bloc ainsi formé dans la bouche du patient, en faisant chevaucher les gouttières inférieure et supérieure respectivement sur les rangées de dents inférieure et supérieure, et enfin dans lequel on ajuste la longueur entre les portions de fixation de la tige lorsque l'appareil est dans la bouche, en modifiant la forme d'une des ondulations de la portion centrale d'ajustement de la tige. The invention also relates to a method of adjusting the position of an orthodontic bracing apparatus, in which a shaft having a corrugated shape is assembled to an upper trough and a lower trough, and in which the block thus formed is placed in the patient's mouth, overlapping the upper and lower gutters respectively on the rows of lower and upper teeth, and finally in which the length is adjusted between the attachment portions of the rod when the apparatus is in the mouth, modifying the shape of one of the corrugations of the central portion of adjustment of the rod.
D'autres caractéristiques et avantages de l'invention assortiront plus précisément de la description qui suit, description illustrée par les figures suivantes : Other characteristics and advantages of the invention will more precisely be accompanied by the following description, which description is illustrated by the following figures:
- la figure 1 , qui illustre un appareil orthodontique qui comporte selon l'invention deux gouttières disposées sur les dents et reliées entre elles par une tige, l'appareil étant ici vu de côté et en position dans la bouche d'un patient, avec les mâchoires fermées ; - Figure 1, which illustrates an orthodontic appliance which comprises according to the invention two gutters arranged on the teeth and interconnected by a rod, the apparatus being here seen from the side and in position in the mouth of a patient, with closed jaws;
- la figure 2, qui est une vue en perspective de la tige de l'appareil telle qu'elle est illustrée à la figure 1 ; - Figure 2, which is a perspective view of the rod of the apparatus as shown in Figure 1;
- et la figure 3 , qui est une vue en perspective d'une tige selon une variante de réalisation . - And Figure 3, which is a perspective view of a rod according to an alternative embodiment.
Tel que cela est illustré sur la figure 1 , un appareil orthodontique 2 selon l'invention comporte un jeu de gouttières reliées par une tige ondulée 4. Dans la description qui va suivre, il ne sera décrit qu'une tige ondulée, reliant sur un côté de la bouche les gouttières. Il sera toutefois compris qu'avantageusement, une tige est disposée sensiblement symétriquement, de façon indépendante entre les gouttières de l'autre côté de la bouche. Les gouttières sont réalisées en résine et elles présentent une forme obtenue par thermoformage adaptée à recouvrir les dents correctement alignées. Elles comportent dans le fond des empreintes pour le passage des dents de manière à ce que les gouttières viennent en chevauchement des dents. Des armatures métalliques sont noyées dans chacune de ces gouttières. Une gouttière supérieure 6 est ainsi disposée en chevauchement des dents de la mâchoire supérieure, avec une armature métallique supérieure 7 qui est solidaire de cette gouttière supérieure, tandis qu'une gouttière inférieure 8 est disposée symétriquement en chevauchement des dents de la mâchoire inférieure, avec une armature métallique inférieure 9 qui est solidaire de ladite gouttière inférieure. As illustrated in Figure 1, an orthodontic appliance 2 according to the invention comprises a set of aligners connected by a corrugated rod 4. In the following description, it will be describes a wavy stem, connecting on one side of the mouth the gutters. It will however be understood that advantageously, a rod is arranged substantially symmetrically, independently between the gutters on the other side of the mouth. The gutters are made of resin and they have a shape obtained by thermoforming adapted to cover properly aligned teeth. They have in the bottom fingerprints for the passage of teeth so that the gutters are overlapping teeth. Reinforcements are embedded in each of these gutters. An upper gutter 6 is thus arranged in overlapping of the teeth of the upper jaw, with an upper metal frame 7 which is integral with this upper gutter, while a lower gutter 8 is arranged symmetrically in overlapping teeth of the lower jaw, with a lower metal frame 9 which is integral with said lower channel.
La tige ondulée relie les deux armatures métalliques pour bloquer la propulsion relative d'une mâchoire par rapport à l'autre. La tige ondulée comporte des extrémités adaptées à être fixées respectivement sur une des gouttières et sur l'armature métallique correspondante. On détermine ainsi un point de fixation sur la gouttière inférieure et un point de fixation sur la gouttière supérieure, et la tige est disposée dans la bouche pour relier ces points de fixation déterminés. On comprend que la longueur de la tige correspond à la distance entre ces deux points de fixation déterminés et qu'il pourra avantageusement être procédé à des réglages sur cette longueur de la tige, dans un sens ou dans l'autre pour ajuster en avancement ou en éloignement la position relative des gouttières, et donc des mâchoires l'une par rapport à l'autre. La tige est formée d'une seule pièce, qui présente successivement, depuis une première extrémité adaptée à être fixée sur la gouttière supérieure jusqu'à l'extrémité opposée, une première portion de fixation 10, une portion centrale d'ajustement 12 et une deuxième portion de fixation 14. La première portion de fixation 10 présente sensiblement la forme d'un S et elle est percée d'un premier illet 16, tandis que la deuxième portion de fixation 14 présente sensiblement la forme d'un C et qu'elle est percée d'un deuxième œillet 18. The corrugated rod connects the two metal frames to block the relative propulsion of one jaw relative to the other. The corrugated rod has ends adapted to be fixed respectively on one of the gutters and on the corresponding metal frame. An attachment point is thus determined on the lower gutter and an attachment point on the upper gutter, and the rod is disposed in the mouth to connect these determined attachment points. It is understood that the length of the rod corresponds to the distance between these two fixing points determined and that it may advantageously be made adjustments to this length of the rod, in one direction or the other to adjust in progress or away from the relative position of the gutters, and therefore the jaws relative to each other. The rod is formed in one piece, which presents successively, from a first end adapted to be fixed on the upper channel to the opposite end, a first fixing portion 10, a central adjustment portion 12 and a second fixing portion 14. The first fixing portion 10 has substantially the shape of an S and is pierced with a first lug 16, while the second fixing portion 14 has substantially the shape of a C and is pierced with a second eyelet 18.
Comme cela est notamment visible sur la figure 1 , la fixation des tiges du dispositif sur les armatures métalliques est la même que ce soit pour la fixation sur l'armature supérieure ou sur l'armature inférieure. As can be seen in particular in FIG. 1, the fixation of the rods of the device on the metal reinforcements is the same whether for attachment to the upper armature or to the lower armature.
L'armature supérieure et la tige supérieure sont fixées par l'intermédiaire d'une épingle 20 passant d'une part dans le premier œillet 16 et étant soudée à l'armature métallique supérieure. L'épingle est munie à cet effet d'une tige fine adaptée à loger dans le tube et à l'extrémité de laquelle est montée une boule venant en butée contre les bords délimitant l'œillet. Lorsque l'épingle est en position, c'est-à-dire lorsque la boule est en appui contre les bords de l'œillet et que la tige fine s'étend à travers l'armature, l'extrémité de l'épingle opposée à la boule est pliée pour bloquer l'épingle dans l'armature et arrêter en translation la tige supérieure du dispositif par rapport à l'armature supérieure et par extension par rapport à la mâchoire supérieure lorsque l'appareil est en place dans la bouche du patient. De façon semblable, la tige inférieure est fixée sur l'armature de la gouttière inférieure par l'intermédiaire d'une épingle 22 qui est adaptée à coopérer avec le deuxième œillet 18 et avec un tube soudé à l'armature métallique inférieure. Ces fixations faisant l'objet par ailleurs de dépôts de brevet antérieurs par la demanderesse, elles ne seront pas décrites plus en détail et par exemple, la représentation de l'appareil sur la figure 1 ne détaille pas dans son ensemble la coopération de l'extrémité à rabattre avec le tube de l'armature. The upper armature and the upper rod are fixed by means of a pin 20 passing on the one hand into the first eyelet 16 and being welded to the upper metal armature. The pin is provided for this purpose a thin rod adapted to be accommodated in the tube and at the end of which is mounted a ball abutting against the edges defining the eyelet. When the pin is in position, that is to say when the ball is resting against the edges of the eyelet and the thin rod extends through the armature, the end of the pin opposite to the ball is bent to lock the pin in the frame and stop in translation the upper rod of the device relative to the upper frame and by extension relative to the upper jaw when the device is in place in the mouth of the patient. Similarly, the lower rod is fixed to the frame of the lower channel by means of a pin 22 which is adapted to cooperate with the second eyelet 18 and with a tube welded to the lower metal frame. These fasteners are also the subject of prior patent applications by the applicant, they will not be described in more detail and for example, the representation of the device in Figure 1 does not detail the cooperation of the whole. end to fold down with the tube of the frame.
En variante non représentée, on pourra prévoir une construction simplifiée des gouttières dans lesquelles l'armature noyée consiste en une platine en saillie de laquelle un pion s'étend de manière à servir de point de fixation à la portion de fixation correspondante de la tige. As a variant not shown, provision can be made for a simplified construction of the gutters in which the embedded reinforcement consists of a projecting plate from which a pin extends so as to serve as a point of attachment to the corresponding fixing portion of the rod.
On va maintenant décrire plus précisément la portion centrale d'ajustement 12, qui s'étend entre les deux portions de fixation de la tige. Elle comporte une première portion droite 24 qui prolonge la première portion de fixation et une deuxième portion droite 26 qui prolonge la deuxième portion de fixation, ainsi qu'une portion ondulée 28 disposée entre les deux portions droites. La portion ondulée comporte des ondulations 29 qui dessinent ici une forme en W et qui s'étend entre les portions droites qui définissent l'axe principal 30 de la tige. La forme en W est obtenue par deux déformations courbes de la tige. On observe que (tel que cela est visible sur la figure 2) ces déformations s'étendent d'un même côté de l'axe principal de la tige, au-dessous de cet axe, et l'on observe que ces déformations s'étendent du côté opposé de l'axe principal par rapport aux portions de fixation, dont les formes en "S" et en "C" s'étendent toutes les deux au-dessus de l'axe principal. We will now describe more precisely the central adjustment portion 12, which extends between the two fixing portions of the rod. It comprises a first straight portion 24 which extends the first fixing portion and a second straight portion 26 which extends the second fixing portion, and a corrugated portion 28 disposed between the two straight portions. The corrugated portion has undulations 29 which here form a W-shape and which extends between the straight portions which define the main axis 30 of the rod. The W shape is obtained by two curved deformations of the stem. It is observed that (as can be seen in FIG. 2) these deformations extend on the same side of the main axis of the rod, below this axis, and it is observed that these deformations extend from the opposite side of the main axis relative to the attachment portions, the "S" and "C" shapes both extending above the main axis.
Dans le mode de réalisation présentement décrit d'un appareil de orthodontique de contention, la tige est formée en un acier semi- rigide, qui permet à la fois la déformation de la partie ondulée à l'aide d'une pince par le praticien, mais qui ne se déforme pas sous l'effet de la traction ou de la compression générée par les mouvements relatifs des mâchoires l'une par rapport à l'autre. La présence des portions droites disposées entre les portions de fixation et la portion centrale d'ajustement permet cette rigidité suffisante pour que l'ensemble ne plie pas sous les efforts des mâchoires. In the presently described embodiment of a bracing orthodontic apparatus, the shank is formed of a semi-rigid steel, which allows both deformation of the waved portion by a clinician, but which does not deform under the effect of traction or compression generated by the relative movements of the jaws relative to each other. The presence of the straight portions disposed between the attachment portions and the central adjustment portion allows this sufficient rigidity so that the assembly does not bend under the jaws efforts.
On va maintenant décrire la conception et le montage de l'appareil de contention. We will now describe the design and assembly of the restraint.
Les gouttières sont thermoformées sur la base d'une empreinte des dents prises précédemment. Leur rigidité tend à maintenir les dents en place lorsque les gouttières sont placées en chevauchement des mâchoires. The gutters are thermoformed on the basis of an impression of the teeth taken previously. Their rigidity tends to hold the teeth in place when the gutters are placed in overlapping jaws.
On connaît, en fonction des résultats du traitement actif du décalage des mâchoires, la position que doit garder la mâchoire supérieure par rapport à la mâchoire inférieure. On calcule alors la longueur que doit avoir la tige selon l'invention pour qu'elle puisse être fixée aux deux mâchoires de manière à ce que soit conservé ce bon écartement, et on réalise une tige de cette longueur en déformant la portion centrale d'ajustement. On choisit une profondeur des ondulations qui permette par la suite un ajustement adapté au cas spécifique du patient, tel que cela sera décrit ci-après. The position of the upper jaw with respect to the lower jaw is known from the results of active jaw offset processing. The length of the rod according to the invention is then calculated so that it can be fixed to the two jaws in such a way that good spacing is maintained, and a rod of this length is produced by deforming the central portion of the jaw. adjustment. We choose a depth of corrugations which subsequently allows an adjustment adapted to the specific case of the patient, as will be described below.
Le montage de cet appareil se fait avant la pose dans la bouche, et il peut se faire avantageusement en laboratoire, avant la visite du patient. On assemble une tige à la gouttière supérieure et à la gouttière inférieure. Comme cela a été décrit précédemment, la tige est fixée à l'armature métallique de la gouttière supérieure par l'intermédiaire d'une épingle garnie d'une boule passant l'œillet et dans le tube soudé à l'armature métallique, tandis qu'elle est fixée à l'armature métallique de la gouttière inférieure par l'intermédiaire d'une épingle garnie d'une boule passant dans l'œillet et dans le tube soudé à l'armature métallique. On assemble ensuite une autre tige de l'autre côté des gouttières. The assembly of this device is done before the installation in the mouth, and it can be done advantageously in the laboratory, before the visit of the patient. A rod is assembled at the upper gutter and the lower gutter. As previously described, the rod is attached to the metal frame of the upper gutter via a pin provided with a ball passing the eyelet and in the tube welded to the metal frame, while it is fixed to the metal frame of the lower gutter by means of a pin furnished with a ball passing through the eyelet and into the tube welded to the metal frame. Then another rod is assembled on the other side of the gutters.
On obtient ainsi un appareil de contention d'un bloc, formé d'une gouttière supérieure et d'une gouttière inférieure, reliées par deux tiges ondulées sensiblement symétriques. Et l'on peut poser ce bloc directement sur les dents en faisant correspondre chacune des gouttières avec une des rangées de dents, comme cela est visible sur la figure 1 . Avantageusement, le porteur de l'appareil de contention selon l'invention peut ainsi manipuler un seul bloc pour mettre ou retirer son appareil. This provides a device for restraining a block, formed of an upper gutter and a lower gutter, connected by two substantially symmetrical corrugated rods. And we can put this block directly on the teeth by matching each of the gutters with one of the rows of teeth, as shown in Figure 1. Advantageously, the wearer of the contention apparatus according to the invention can thus manipulate a single block to put or remove his apparatus.
On observe que lorsque l'appareil de contention est posé dans la bouche du patient, les ondulations ne rentrent pas en contact avec la mâchoire. La forme de la deuxième portion de fixation de la tige et sa coopération avec la gouttière inférieure permet de positionner cette tige le long de la mâchoire inférieure. Le fait que les ondulations soient placées au-dessous de Taxe principal de la tige, et le fait que la portion centrale d'ajustement comporte une première portion droite entre la première portion de fixation et les ondulations, permettent d'éviter le contact de la tige avec le dessous de la mâchoire supérieure, ce qui pourrait gêner la fermeture de la bouche. It is observed that when the compression device is placed in the mouth of the patient, the corrugations do not come into contact with the jaw. The shape of the second fastening portion of the rod and its cooperation with the lower trough allows positioning this rod along the lower jaw. The fact that the corrugations are placed below the main axis of the rod, and the fact that the central adjustment portion has a first straight portion between the first fixing portion and the corrugations, make it possible to avoid contact with the rod. stem with the underside of the upper jaw, which could hinder the closure of the mouth.
Une fois l'appareil en place dans la bouche du patient, le praticien peut réaliser un réglage de l'avancement des mâchoires l'une par rapport à l'autre, par une déformation de la tige ondulée, c'est à dire en modifiant la forme des ondulations. Si par exemple le praticien souhaite écarter les mâchoires l'une de l'autre, il réalise un écrasement d'une des ondulations de la tige de sorte que la distance entre les deux parties de fixation s'agrandit. Il est intéressant dès lors, tel que cela a été décrit précédemment, de prévoir une profondeur de ces ondulations adéquate au bon réglage de l'appareil de contention par le praticien. Once the device is in place in the patient's mouth, the practitioner can perform an adjustment of the advancement of the jaws relative to each other, by deformation of the corrugated stem, ie by modifying the shape of the undulations. If for example the practitioner wishes to move the jaws away from one another, it achieves a crushing of one of the corrugations of the rod so that the distance between the two fastening parts grows. It is therefore interesting, as described above, to provide a depth of these corrugations adequate to the correct setting of the restraint device by the practitioner.
L'appareil de contention selon l'invention présente une tige unique qui permet de conserver dans le temps la position des mâchoires l'une par rapport à l'autre, tout en permettant un jeu de fonctionnement latéral et sagittal des mâchoires, grâce à la forme des portions de fixation. The compression device according to the invention has a single rod which makes it possible to keep the position of the jaws in relation to one another over time, while allowing lateral and sagittal play of the jaws, thanks to the forms fixing portions.
On observe que l'invention permet un réglage indépendant de chaque côté de la mâchoire, puisqu'il est possible pour le praticien de déformer une ondulation sur la tige disposée du côté gauche de la mâchoire par exemple, sans le faire sur la tige disposée du côté droit. Les combinaisons pour l'ajustement en position des mâchoires l'une par rapport à l'autre, particulièrement important dans ces procédés de contention, sont ainsi multiples. It is observed that the invention allows independent adjustment on each side of the jaw, since it is possible for the practitioner to deform a corrugation on the rod disposed on the left side of the jaw for example, without doing so on the rod disposed of the right side. The combinations for adjustment in position of the jaws relative to each other, particularly important in these contention methods, are thus multiple.
Une variante de réalisation de la tige est représentée à la figure 3. La tige 104 selon cette variante diffère de la tige 4 décrite précédemment en ce que les ondulations 129 ne s'étendent pas d'un seul côté de l'axe principal 130 de la tige, mais de part et d'autre de cet axe, en présentant des profondeurs de déformation moins marquées de chaque côté. La forme de la première partie de fixation 1 10 et la longueur de la première partie droite 124 pourront être différentes de celles du mode de réalisation principal pour permettre la mise en place de la tige sans que celle-ci ne gêne la fermeture des mâchoires. An alternative embodiment of the rod is shown in Figure 3. The rod 104 according to this variant differs from the rod 4 described above in that the corrugations 129 do not extend on one side of the main axis 130 of the stem, but on both sides of this axis, with less marked deformation depths on each side. The shape of the first attachment portion 1 10 and the length of the first right portion 124 may be different from those of the main embodiment to allow the establishment of the rod without it hinders the closure of the jaws.
La description qui précède explique clairement comment l'invention permet de proposer un appareil de contention qui stabilise la correction orthodontique obtenue pendant un traitement orthodontique préalable, et qui permette en outre un réglage une fois dans la bouche du patient pour s'adapter plus finement à l'avancée des mâchoires l'une par rapport à l'autre. Ce réglage est fait facilement par des modifications de la forme de la tige, à même la bouche du patient. La réalisation initiale de la forme ondulée permet un réglage dans les deux sens, soit en écartement des mâchoires par le pinçage d'une des ondulations pour agrandir la tige, soit en rapprochement des mâchoires par la réalisation d'une ondulation supplémentaire ou plus prononcée pour rétrécir la tige. The foregoing description clearly explains how the invention makes it possible to propose a compression device which stabilizes the orthodontic correction obtained during previous orthodontic treatment, and which also allows adjustment once in the patient's mouth to adapt more finely to the the advancement of the jaws relative to each other. This adjustment is easily made by changes in the shape of the stem, right in the mouth of the patient. The initial embodiment of the corrugated shape allows adjustment in both directions, either by spacing the jaws by the clamping of one of the corrugations to enlarge the rod, or by bringing the jaws closer together by performing an additional corrugation or more pronounced for shrink the stem.
Et l'on réalise ceci sans recourir à une construction à tiges multiples, pouvant coulisser l'une par rapport à l'autre : il est particulièrement avantageux d'avoir une tige unique plutôt que des tiges qui peuvent se séparer, puisque cela offre une facilité d'utilisation. Une fois monté, l'appareil ne nécessite plus que des opérations simples pour mettre et enlever l'appareil dans la bouche, le porteur de l'appareil n'ayant pas à relier par lui-même des tiges mobiles les unes par rapport aux autres. And this is achieved without resorting to a multiple rod construction, slidable relative to each other: it is particularly advantageous to have a single rod rather than rods that can separate, since this offers a ease of use. Once mounted, the device requires only simple operations to put and remove the device in the mouth, the wearer of the device does not have to connect by itself rods relative to each other .
Dans un autre mode de réalisation, propre aux appareils orthodontiques actifs, la tige est formée en un matériau thermosensible, les portions de fixation sont traitées, par courant électrique par exemple, pour leur faire perdre leur caractère thermo-sensible. Lorsque la tige est dans la bouche du patient, la chaleur qui s'y dégage génère la déformation de la portion centrale d'ajustement. Les ondulations diminuent et la portion centrale tend à recouvrer sa forme allongée, en modifiant la longueur relative entre les deux points de fixation de la tige sur les gouttières, et donc en réalisant un écartement souhaité des mâchoires l'une par rapport à l'autre. In another embodiment, specific to active orthodontic appliances, the rod is formed of a thermosensitive material, the fixing portions are treated, for example by electric current, to make them lose their heat-sensitive character. When the stem is in the patient's mouth, the heat that emerges generates the deformation of the central portion of adjustment. The undulations diminish and the central portion tends to recover its elongated shape, by modifying the relative length between the two fixing points of the rod on the gutters, and thus by achieving a desired separation of the jaws relative to each other .
L'invention ne saurait toutefois se limiter aux modes de réalisation spécifiquement décrits dans ce document, et s'étend en particulier à tous moyens équivalents et à toute combinaison techniquement opérante de ces moyens. The invention can not, however, be limited to the embodiments specifically described in this document, and extends in particular to all equivalent means and any technically operating combination of these means.

Claims

R E V E N D I C A T I O N S
1. Appareil orthodontique (2), du type comportant deux gouttières de maintien des mâchoires, une gouttière inférieure (8) pour être associée à la mâchoire inférieure d'un patient et une gouttière supérieure (6) pour être associée à la mâchoire supérieure de ce patient, caractérisé en ce qu'une tige (4) relie un point de fixation déterminé sur la gouttière inférieure avec un point de fixation déterminé sur la gouttière supérieure, ladite tige comportant d'une seule pièce une première portion (10) de fixation à la gouttière supérieure et une deuxième portion (14) de fixation à la gouttière inférieure, ainsi qu'une portion centrale d'ajustement (12) comportant une forme ondulée et s'étendant de l'une à l'autre des portions de fixation, ladite portion centrale étant déformable par modification de la forme des ondulations pour ajuster la longueur relative entre lesdits points de fixation déterminés. An orthodontic appliance (2), of the type comprising two jaw-retaining gutters, a lower gutter (8) for being associated with the lower jaw of a patient, and an upper gutter (6) for being associated with the upper jaw of this patient, characterized in that a rod (4) connects a determined fixing point on the lower trough with a fixed fixing point on the upper trough, said rod comprising in one piece a first portion (10) of attachment at the upper gutter and a second attachment portion (14) to the lower gutter, and a central adjustment portion (12) having a corrugated shape and extending from one to the other of the attachment portions said central portion being deformable by changing the shape of the corrugations to adjust the relative length between said determined attachment points.
2. Appareil selon la revendication 1 , caractérisé en ce que la tige (4) est formée dans un matériau thermo-sensible, ladite portion centrale d'ajustement ( 12) étant adaptée à recouvrer une forme droite sous l'effet de la chaleur de la bouche du patient. 2. Apparatus according to claim 1, characterized in that the rod (4) is formed in a heat-sensitive material, said central adjustment portion (12) being adapted to recover a straight shape under the effect of the heat of the patient's mouth.
3. Appareil selon la revendication 1 , caractérisé en ce que la tige (4) est formée dans un matériau adapté à ce que la tige soit conformable par déformation plastique de la portion centrale d'ajustement (12) pour réaliser un ajustement de sa taille en rapprochement ou en éloignement desdits points de fixation déterminés, sans pour autant se déformer sous l'effet de la traction ou de la compression générée par les mouvements relatifs des mâchoires l'une par rapport à l'autre. 3. Apparatus according to claim 1, characterized in that the rod (4) is formed in a material adapted so that the rod is conformable by plastic deformation of the central adjustment portion (12) to achieve an adjustment of its size moving towards or away from said determined attachment points without deforming under the effect of traction or the compression generated by the relative movements of the jaws relative to each other.
4. Appareil selon la revendication 3, caractérisé en ce que la tige (4) est réalisée en acier inoxydable. 4. Apparatus according to claim 3, characterized in that the rod (4) is made of stainless steel.
5. Appareil selon l'une des revendications 1 à 4, caractérisé en ce que la portion centrale d'ajustement (12) comporte successivement une première portion droite (24) qui prolonge la première portion de fixation (10) et une deuxième portion droite (26) qui prolonge la deuxième portion de fixation (14), ainsi qu'une portion ondulée (28) disposée entre les deux portions droites. 5. Apparatus according to one of claims 1 to 4, characterized in that the central adjustment portion (12) comprises successively a first straight portion (24) which extends the first fixing portion (10) and a second straight portion (26) which extends the second attachment portion (14), and a corrugated portion (28) disposed between the two straight portions.
6. Appareil selon la revendication 5, caractérisé en ce que la portion ondulée (28) présente des ondulations (29) qui s'étendent au-dessous d'un axe principal de la tige (30) défini par les portions droites (24, 26), tandis que les portions de fixation (10, 14) s'étendent au-dessus de cet axe principal. 6. Apparatus according to claim 5, characterized in that the corrugated portion (28) has corrugations (29) which extend below a main axis of the rod (30) defined by the straight portions (24, 26), while the fixing portions (10, 14) extend above this main axis.
7. Appareil selon l'une des revendications précédentes, caractérisé en ce que les gouttières (6, 8) sont réalisées par thermoformage. 7. Apparatus according to one of the preceding claims, characterized in that the gutters (6, 8) are made by thermoforming.
8. Appareil selon l'une des revendications précédentes, caractérisé en ce que les gouttières inférieure et supérieure (6, 8) présentent une forme d'arc adaptée à recouvrir respectivement l'ensemble de la mâchoire inférieure et de la mâchoire supérieure, et en ce qu'elles sont reliées par deux tiges (4) disposées chacune d'un côté de la bouche, chaque tige étant d'une seule pièce et présentant une portion ondulée (28). 8. Apparatus according to one of the preceding claims, characterized in that the lower and upper gutters (6, 8) have an arcuate shape adapted to cover respectively the entire lower jaw and the upper jaw, and they are connected by two rods (4) each disposed on one side of the mouth, each rod being in one piece and having a corrugated portion (28).
9. Procédé de réglage en position d'un appareil de contention, dans lequel : 9. A method of adjusting in position a restraining apparatus, wherein:
- on assemble une tige (4) à une gouttière supérieure (6) et à une gouttière inférieure (8), ladite tige comportant une portion centrale d'ajustement (12) qui présente une forme ondulée ; a rod (4) is assembled to an upper gutter (6) and to a lower gutter (8), said rod comprising a central adjustment portion (12) which has a corrugated shape;
- on place le bloc ainsi formé dans la bouche du patient, en faisant chevaucher respectivement les gouttières inférieure et supérieure sur les rangées de dents inférieure et supérieure ; the block thus formed is placed in the patient's mouth, overlapping respectively the lower and upper grooves on the rows of lower and upper teeth;
- et on ajuste la longueur entre les portions de fixation de la tige lorsque l'appareil est dans la bouche, en modifiant la forme d'une des ondulations de la portion centrale d'ajustement de la tige. and adjusting the length between the fixing portions of the rod when the apparatus is in the mouth, by modifying the shape of one of the corrugations of the central adjustment portion of the rod.
EP12798826.9A 2011-11-15 2012-11-15 Orthodontic appliance Withdrawn EP2779935A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1103470A FR2982477B1 (en) 2011-11-15 2011-11-15 ORTHODONTIC APPARATUS
PCT/IB2012/002353 WO2013072743A1 (en) 2011-11-15 2012-11-15 Orthodontic appliance

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EP2779935A1 true EP2779935A1 (en) 2014-09-24

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EP12798826.9A Withdrawn EP2779935A1 (en) 2011-11-15 2012-11-15 Orthodontic appliance

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EP (1) EP2779935A1 (en)
FR (1) FR2982477B1 (en)
WO (1) WO2013072743A1 (en)

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Publication number Priority date Publication date Assignee Title
FR3064465A1 (en) * 2017-03-30 2018-10-05 Stephan Valero DENTO-MAXILO-FACIAL GROWTH ACTIVATOR

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Publication number Priority date Publication date Assignee Title
DE19744415A1 (en) * 1997-10-08 1999-04-15 Saduman Oguzhan Dr Koeklue Orthodontic appliance with top and bottom jaw plate
AU2001255657A1 (en) * 2000-04-25 2001-11-07 Align Technology, Inc. Embedded features and methods of a dental appliance
US6254384B1 (en) * 2000-08-11 2001-07-03 Farel Rosenberg Cushioned molar gear for the correction of class II and class III dental malocclusions employing improved compression coupling means

Non-Patent Citations (1)

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Title
See references of WO2013072743A1 *

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FR2982477B1 (en) 2014-01-31
WO2013072743A1 (en) 2013-05-23

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