WO2012038663A1 - Dental trays with connecting rods articulated on pivots - Google Patents

Dental trays with connecting rods articulated on pivots Download PDF

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Publication number
WO2012038663A1
WO2012038663A1 PCT/FR2011/052182 FR2011052182W WO2012038663A1 WO 2012038663 A1 WO2012038663 A1 WO 2012038663A1 FR 2011052182 W FR2011052182 W FR 2011052182W WO 2012038663 A1 WO2012038663 A1 WO 2012038663A1
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WO
WIPO (PCT)
Prior art keywords
pivot
pair
gutter
gutters
connecting rod
Prior art date
Application number
PCT/FR2011/052182
Other languages
French (fr)
Inventor
Gérard VINCENT
Original Assignee
Tali
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 Tali filed Critical Tali
Publication of WO2012038663A1 publication Critical patent/WO2012038663A1/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
    • 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 dental gutters intended to be arranged on the dental arches of the lower and upper jaws of a subject and connected by connecting rods attached to fastening devices adapted for these rods.
  • Document EP 2 143 397 in the name of the Applicant discloses a pair of dental gutters intended to be arranged on the dental arches of the lower and upper jaws of a subject, defining a median plane, comprising two lateral pivots on each gutter, and two substantially rigid rods in the buccal position laterally connecting respectively a pivot of a gutter to a pivot of the other gutter, wherein the pivots are perpendicular to the median plane on each gutter and where each rod is composed of a central portion defining a axis and two end tabs each defining a plane, the two said planes defined by the end tabs being distinct and parallel to the aforementioned median plane, said axis of the central portion intersecting these two planes at a non-zero angle.
  • each connecting rod end is associated with a fastening device having a base adapted to the groove of the dental arch on which it must be mounted, a range parallel to the median plane of the dental arch intended to receive the end leg of the rod, and an axis perpendicular to this scope.
  • the tab has a through hole having a first section larger than the main section of the axis of the attachment device and a second section corresponding to a terminal section with an oriented profile of the axis of the attachment device, whereby the connecting rod can be engaged on the axis of the device in a first position and can not be disengaged when it is in a second relative position of the connecting rod and the attachment device.
  • DE 20 2008 011 841 shows a pair of gutters in which the connecting rods are essentially used in traction. They are elastically snap on the pivots, but in such a way that they are retained after snapping into the space formed between the gutter and an enlargement button of the pivot. The embodiment presented is not entirely satisfactory when the rods must be used in thrust and the position of the rod is not sufficiently guaranteed.
  • the object of the invention is to provide a pair of gutters in which this position is better guaranteed and can work well also in thrust.
  • the invention achieves its goal thanks to a pair of dental gutters defining a median plane and a transverse plane, comprising two lateral cylindrical pivots on each gutter intended to articulate the ends of two substantially rigid rods arranged in the buccal position and laterally connecting respectively a pivot a gutter to a pivot of the other channel, the pin having means for resilient locking rods 5, characterized in that said detent means are constituted by substantially complementary reliefs and groove-like rib provided on the periphery cylindrical pivot and in the connecting rod end, said reliefs being disposed between a first cylindrical section and a second cylindrical section so as to lock in position one in the other.
  • the rods comprise complementary reliefs which separate two cylindrical sections and cooperate thereby to operate a locking position in one another in the other which prevents the rod from coming into contact with the gutter from which it remains kept at a distance by this blockage.
  • annular groove formed on one part (pivot or connecting rod) of the assembly and cooperating with a groove formed on the other part allowing bidirectional axial locking from one part to the other is provided.
  • Snap-fit means lend themselves well to a plastic embodiment and are convenient to manufacture and use. Furthermore, the snap ensures a good behavior of the device when used in the patient's mouth.
  • the pivot may be the male member of the assembly and cooperate with a female part formed in the connecting rod, but it can also provide the opposite arrangement.
  • the male part of the assembly can receive ratchet relief in the form of an annular groove or groove, and the other part in the form of an annular groove or groove.
  • the pivot is in a preferred embodiment a male half-axis carried by the gutter and it cooperates with a sleeve formed in the connecting rod.
  • the relief is then advantageously a groove provided on the cylindrical periphery of the pivot, intended to cooperate with an internal rib provided in the connecting rod end.
  • the rib is advantageously chamfered to facilitate its engagement on the pivot.
  • the end of the pivot is slotted so as to form a compressible zone to facilitate engagement of the connecting rod end on the pivot.
  • the slot preferably arranged diametrically, preferably sinks into the end portion of the pivot substantially to the level of the snap groove.
  • Each connecting rod is advantageously composed of a central part defining an axis and two end tabs in each of which is formed an orifice intended to snap on the pivot and comprising for this purpose the complementary snap-fitting relief.
  • the pivots are perpendicular to the median plane on each gutter.
  • the connecting rod end lug has on its inner side a cylindrical section formed by said first cylindrical section.
  • the rod end end has a cylindrical section with cutaway on its inner side, intended to be parallel and adjacent to the gutter in this region, and on its outer side it has a face parallel to the median plane of the gutters .
  • the pivot is in the form of a hollow half-axis and receives a half-axis formed on the rod end.
  • Figure 1 is a schematic perspective view of a pair of gutters according to the invention, provided with their two connecting rods articulated through the hinge devices of the invention.
  • Figure 2 is a more detailed top view of the pair of gutters of Figure 1, with cutaway detail of a hinge device of the invention.
  • FIG. 3 is a partial sectional view showing the enlarged detail F of the articulation device of FIG. 2.
  • FIG. 4 is a view similar to FIG. 3 of a variant of the articulation device of FIG.
  • FIG 5 is a schematic diagram of an alternative embodiment of Figure 3 wherein the gutter pivot is perpendicular to the gutter itself.
  • FIG 6 is a schematic diagram of an alternative embodiment of Figure 3 wherein the gutter pin is in the form of hollow shaft.
  • Diagram 1 shows the gutter 10 of the dental arch of the upper (or maxillary) jaw located above the gutter 11 of the dental arch of the lower jaw (or mandible).
  • the two gutters of arches 10, 11 have a substantially U-shaped hollow channel and are symmetrical with respect to the median plane P of the subject.
  • the plan of extension and contact of the gutters, defined between the upper and lower gutters is defined as the transverse plane, orthogonal to the plane P.
  • the gutter 11 of the lower arch is represented here in advance with respect to the gutter 10 the upper arch.
  • the two arches gutters 10 and 11 are connected by two rods 20 articulated each at their two ends on front and rear fastening devices 30 respectively connected to an arcuate gutter 10 or 11. These two fasteners are placed as close as possible to the trans contact plane in order to minimize the mouth opening in propulsion, which would result in a loss of efficiency and discomfort for the wearer.
  • the rods 20 are in the buccal position, lateral to the jaws: one of their large flat faces is directed towards the jaws while their long thin edges are directed respectively upwardly and downwardly.
  • Each attachment device 30 comprises a base 32 and a pivot 33 in the form of a male cylindrical half-axis.
  • the base 32 integrates with the profile of the hull of the gutter 10 or integrally by molding.
  • the cylindrical pivot 33 integrally molded with the base 32, is perpendicular to the median plane P and thus forms an angle with the base 32.
  • the pivot comprises a first cylindrical section 34 of a first diameter d1, followed by a second section cylindrical end 35 of smaller diameter d2, the two sections 34, 35 being separated by an annular groove of rectangular section 36 forming a shoulder 37 on the first section 34, this annular groove 34 forms one of two complementary reliefs d snap.
  • the end of the pivot 33 is slotted at the second section 35 by a diametrical slot 38 so that the two half-sections 39 separated by the slot have a certain elastic flexibility that allows to compress it.
  • the pivot 33 is made of a relatively rigid and elastic thermoplastic material, for example SEBS (an optionally modified styrene-ethylene-butylene-styrene copolymer).
  • the two front and rear attachment devices 30 differ from each other only by the greater or smaller inclination of the pivot 33 relative to the base 32, so as to respect the orientation of the pivot 33 perpendicular to the median plane P.
  • Each rod 20 is constituted by a substantially rigid plate, Z-shaped elongated and flattened, preferably obtained by molding a plastic material. It comprises a main body 21, in the form of an elongated thin plate, for example of 1 mm or less, at the ends of which are formed, with an angle, two rounded tabs 22 defining, by their outer faces, parallel planes parallel to the median plane P when the rod 20 is in place. These two planes are spaced apart by a non-zero distance corresponding to the implantation gap between the front and rear attachment devices 30.
  • the thickness of the tabs 22 is greater than that of the central portion 21 of connecting rod, in order to be able to there forming the means of cooperation in articulation with the fastening device 30.
  • the tab forms the sleeve in which the male half-axis 33 pivots.
  • the tab 22 is pierced with an orifice 25 having a first cylindrical section 23, on the side facing the arch, followed by a second section. 24, separated from the first section 23 by a circular inner rib 26, which rib 23 forms the second complementary latching relief.
  • the diameter D1 of the first section 23 is just slightly greater than the diameter d1 of the first section 34 of the pivot 33 to leave a minimum clearance of articulation sufficient to allow the introduction of the pivot in the port of the connecting rod.
  • the diameter D2 of the second section 24 is greater than the diameter d2 of the second section 35 of the pivot 33, with a greater clearance than between the first pivot and leg sections.
  • the dimensions of the rib 26 are such that the rib 26 can be housed in the groove 36 of the pivot, with minimal play in the direction of the axis of the pivot, which allows bidirectional axial latching.
  • the connecting rod In the latched position, the connecting rod is kept at a distance in the base 32 and does not touch it, in any position.
  • the rib 26 has a tapered chamfered face 28 to facilitate its installation; the diverging surface 28 has its diameter which decreases with the distance of the gutter.
  • a rounded or chamfered edge is provided at its end of smaller diameter to facilitate the disengagement of the pivot.
  • the rib 26 in a first stage carries by its face 29, directed towards the gutter, on the two half-end sections 39 of the pivot 33, which are chamfered on their edge and can tighten elastically against each other by absorbing the volume of the slot 38, so that the rib 26 can be inserted on the pivot and reach the groove 36 in which it is housed, its face 29 abutting on the shoulder 37 of the groove 36.
  • the two half-sections 39 elastically take up their spaced position and lock in position the rib 26 in the groove 36.
  • the connecting rods are made by molding a plastic material such as POM (polyoxymethylene) or polycarbonate.
  • the slot 38 can also be oriented not perpendicularly to the general axis of the connecting rod but parallel to it to better withstand propulsive forces when using the orthosis.
  • the first cylindrical part 23 is formed in a cylindrical sleeve with an oblique pan disposed parallel to the base 32 of the fastening device and relatively close to the latter, whereas in the embodiment of FIG. embodiment of FIG. 4, which essentially is similar to that described above, the first cylindrical portion 23 is formed in a short cylindrical sleeve with bases parallel to each other and to the face of the tabs 22.
  • the two connecting rods that have been shown belong to a set of several connecting rods of different lengths, intended to adapt to different advances of a jaw with respect to the other, during the titration process.
  • the diameter dl of the body of the pivot 33 is preferably equal to 5mm ⁇ 1.5mm to obtain a significant resistance to the forces imposed during the propulsion of the mandible. Smaller, the pivot may bend and the attachment becomes ineffective; bigger, the volume of the system pivot / connecting rod would be too important and create discomfort.
  • the diameter d2 of the end of the pivot 33 is preferably equal to 4.8mm ⁇ 1.5mm.
  • the total length of the pivot 33 is preferably 7.23mm ⁇ 1.5mm, firstly to provide a gripping surface and sufficient contact with the connecting rod, in particular at the cylindrical sleeve constituting its first cylindrical section, and thus ensure good resistance in propulsion, and secondly limit the volume in the mouth.
  • the length of the cylindrical sleeve of the rod end 23 is advantageously 3.32mm ⁇ 1.5mm, counted on its longest generatrix, and 1.05 ⁇ 0.5mm on its shorter generator, for ensure good contact but do not come in contact with the gutter.
  • the slot 38 advantageously has a width of 0.8 ⁇ 0.2 mm and a depth of 2.2 mm ⁇ 0.8 mm. Deeper and / or wider, the slot would make the fastener less resistant and the connecting rod could disengage from the pivot under the effect of the forces exerted during the propulsion. Shallower and / or less wide, the disengagement of the rods necessary for the titration process (millimeter advanced mandible) would be made difficult and would involve deformation of the end portion 39 of the pivot 33 under the effect of friction, resulting in a loss of efficiency of the fastening system.
  • the pivot 33 "which receives the sleeve portion of the tab 22" is disposed perpendicular to the local gutter, and no longer perpendicular to the median plane of the gutters.
  • the male articulation and the female articulation are reversed.
  • the pivot 33 'secured to the base 32' forms a socket in which is snapped a male half-axis formed on the lug 22 'at the end of the rod body 21'.

Abstract

In this pair of dental trays (10, 11) defining a median plane (P) and a transverse plane, comprising two lateral pivots (33) on each tray (10, 11) designed to articulate the ends (22) of two substantially rigid connecting rods (20) arranged in a vestibular position and laterally connecting a pivot (33) of one tray (10) to a pivot (33) of the other tray (11), and in which the pivots (33) are perpendicular to the median plane (P) on each tray (10, 11), each pivot (33) has means (36) for elastic snap-fitting of the ends of connecting rods (20), holding the connecting rods at a distance from the trays.

Description

Gouttières dentaires à bielles de liaison articulées sur pivots  Dental gutters with connecting rods articulated on pivots
La présente invention concerne des gouttières dentaires destinées à être disposées sur les arcades dentaires des mâchoires inférieure et supérieure d'un sujet et reliées par des bielles fixées à des dispositifs d'attache adaptés pour ces bielles. The present invention relates to dental gutters intended to be arranged on the dental arches of the lower and upper jaws of a subject and connected by connecting rods attached to fastening devices adapted for these rods.
On connaît par le document EP 2 143 397 au nom du Demandeur une paire de gouttières dentaires destinées à être disposées sur les arcades dentaires des mâchoires inférieure et supérieure d'un sujet, définissant un plan médian, comprenant deux pivots latéraux sur chaque gouttière, et deux bielles sensiblement rigides en position vestibulaire reliant latéralement respectivement un pivot d'une gouttière à un pivot de l'autre gouttière, dans laquelle les pivots sont perpendiculaires au plan médian sur chaque gouttière et où chaque bielle est composée d'une partie centrale définissant un axe et de deux pattes d'extrémité définissant chacune un plan, les deux dits plans définis par les pattes d'extrémité étant distincts et parallèles au plan médian précité, ledit axe de la partie centrale coupant ces deux plans sous un angle non nul.  Document EP 2 143 397 in the name of the Applicant discloses a pair of dental gutters intended to be arranged on the dental arches of the lower and upper jaws of a subject, defining a median plane, comprising two lateral pivots on each gutter, and two substantially rigid rods in the buccal position laterally connecting respectively a pivot of a gutter to a pivot of the other gutter, wherein the pivots are perpendicular to the median plane on each gutter and where each rod is composed of a central portion defining a axis and two end tabs each defining a plane, the two said planes defined by the end tabs being distinct and parallel to the aforementioned median plane, said axis of the central portion intersecting these two planes at a non-zero angle.
Selon ce document, chaque extrémité de bielle est associée à un dispositif d'attache comportant une base adaptée à la gouttière de l'arcade dentaire sur laquelle elle doit être montée, une portée parallèle au plan médian de l'arcade dentaire destinée à recevoir la patte d'extrémité de la bielle, et un axe perpendiculaire à cette portée. La patte comporte un orifice traversant comportant une première section plus grande que la section principale de l'axe du dispositif d'attache et une seconde section correspondant à une section terminale à profil orienté de l'axe du dispositif d'attache, moyennant quoi la bielle peut être engagée sur l'axe du dispositif dans une première position et ne peut pas être désengagée quand elle est dans une seconde position relative de la bielle et du dispositif d'attache.  According to this document, each connecting rod end is associated with a fastening device having a base adapted to the groove of the dental arch on which it must be mounted, a range parallel to the median plane of the dental arch intended to receive the end leg of the rod, and an axis perpendicular to this scope. The tab has a through hole having a first section larger than the main section of the axis of the attachment device and a second section corresponding to a terminal section with an oriented profile of the axis of the attachment device, whereby the connecting rod can be engaged on the axis of the device in a first position and can not be disengaged when it is in a second relative position of the connecting rod and the attachment device.
Bien que ces dispositions donnent généralement satisfaction, notamment quand le dispositif d'attache sur la gouttière est métallique, il est apparu qu'il était possible d'améliorer encore le système d'attache pour des gouttières du type précité, et d'obtenir un système qui soit particulièrement bien adapté à des réalisations entièrement en plastique moulé. Le document DE 20 2008 011 841 montre une paire de gouttières dans laquelle les bielles sont essentiellement utilisées en traction. Elles sont élastiquement encliquetables sur les pivots, mais d'une manière telle qu'elles sont retenues après encliquetage dans l'espace formé entre la gouttière et un bouton d'élargissement du pivot. La réalisation présentée n'est pas entièrement satisfaisante lorsque les bielles doivent être utilisées en poussée et la position de la bielle n'est pas suffisamment garantie. Although these arrangements are generally satisfactory, especially when the fastening device on the gutter is metallic, it appeared that it was possible to further improve the fastening system for gutters of the aforementioned type, and to obtain a system that is particularly well suited to achievements made entirely of molded plastic. DE 20 2008 011 841 shows a pair of gutters in which the connecting rods are essentially used in traction. They are elastically snap on the pivots, but in such a way that they are retained after snapping into the space formed between the gutter and an enlargement button of the pivot. The embodiment presented is not entirely satisfactory when the rods must be used in thrust and the position of the rod is not sufficiently guaranteed.
Le but de l'invention est de proposer une paire de gouttières dans laquelle cette position soit mieux garantie et qui puisse bien travailler aussi en poussée.  The object of the invention is to provide a pair of gutters in which this position is better guaranteed and can work well also in thrust.
L'invention atteint son but grâce à une paire de gouttières dentaires définissant un plan médian et un plan transversal, comprenant deux pivots cylindriques latéraux sur chaque gouttière destinés à articuler les extrémités de deux bielles sensiblement rigides disposées en position vestibulaire et reliant latéralement respectivement un pivot d'une gouttière à un pivot de l'autre gouttière, le pivot comportant des moyens d 5 encliquetage élastique des bielles, caractérisé en ce que ces moyens d' encliquetage sont constitués par des reliefs sensiblement complémentaires de type rainure et nervure prévus sur la périphérie cylindrique du pivot et dans l'extrémité de bielle, lesdits reliefs étant disposés entre une première section cylindrique et une seconde section cylindrique de manière à se bloquer en position l'un dans l'autre. The invention achieves its goal thanks to a pair of dental gutters defining a median plane and a transverse plane, comprising two lateral cylindrical pivots on each gutter intended to articulate the ends of two substantially rigid rods arranged in the buccal position and laterally connecting respectively a pivot a gutter to a pivot of the other channel, the pin having means for resilient locking rods 5, characterized in that said detent means are constituted by substantially complementary reliefs and groove-like rib provided on the periphery cylindrical pivot and in the connecting rod end, said reliefs being disposed between a first cylindrical section and a second cylindrical section so as to lock in position one in the other.
Selon le document DE 20 2008 01 1 841, il n'y avait pas de véritable coopération de deux reliefs complémentaires agencés pour un blocage en position de l'un dans l'autre. De cette absence de blocage, il résultait que la position de la bielle n'était pas pleinement assurée et qu'elle pouvait en particulier entrer au contact de la gouttière elle-même, ce qui n'est pas souhaitable. Au contraire selon l'invention, les bielles comportent des reliefs complémentaires qui séparent deux sections cylindriques et coopèrent de ce fait pour opérer un blocage en position de l'un dans l'autre ce qui évite à la bielle d'entrer au contact de la gouttière dont elle reste maintenue à distance par ce blocage. On prévoit en pratique selon l'invention une rainure annulaire formée sur une partie (pivot ou bielle) de l'assemblage et coopérant avec une gorge formée sur l'autre partie permettant un blocage axial bidirectionnel d'une partie dans l'autre. Des moyens d'encliquetage se prêtent bien à une réalisation en matière plastique et sont pratiques à fabriquer et à utiliser. Par ailleurs, l'encliquetage garantit une bonne tenue de l'appareil lors de son utilisation dans la bouche du patient. According to the document DE 20 2008 01 1 841, there was no real cooperation of two complementary reliefs arranged for blocking in position from one to the other. From this absence of blockage, it resulted that the position of the connecting rod was not fully ensured and that it could in particular come into contact with the gutter itself, which is not desirable. On the contrary according to the invention, the rods comprise complementary reliefs which separate two cylindrical sections and cooperate thereby to operate a locking position in one another in the other which prevents the rod from coming into contact with the gutter from which it remains kept at a distance by this blockage. In practice, according to the invention, an annular groove formed on one part (pivot or connecting rod) of the assembly and cooperating with a groove formed on the other part allowing bidirectional axial locking from one part to the other is provided. Snap-fit means lend themselves well to a plastic embodiment and are convenient to manufacture and use. Furthermore, the snap ensures a good behavior of the device when used in the patient's mouth.
Le pivot peut être l'organe mâle de l'assemblage et coopérer avec une partie femelle formée dans la bielle, mais on peut aussi prévoir la disposition contraire. La partie mâle de l'assemblage peut recevoir relief d'encliquetage sous forme de rainure ou de gorge annulaires, et l'autre partie sous forme de gorge ou de rainure annulaires. Le pivot est dans un mode préféré de réalisation un demi-axe mâle porté par la gouttière et il coopère avec une douille formée dans la bielle. Le relief est alors avantageusement une rainure prévue sur la périphérie cylindrique du pivot, destiné à coopérer avec une nervure interne prévue dans l'extrémité de bielle. La nervure est avantageusement chanfreinée pour faciliter son engagement sur le pivot.  The pivot may be the male member of the assembly and cooperate with a female part formed in the connecting rod, but it can also provide the opposite arrangement. The male part of the assembly can receive ratchet relief in the form of an annular groove or groove, and the other part in the form of an annular groove or groove. The pivot is in a preferred embodiment a male half-axis carried by the gutter and it cooperates with a sleeve formed in the connecting rod. The relief is then advantageously a groove provided on the cylindrical periphery of the pivot, intended to cooperate with an internal rib provided in the connecting rod end. The rib is advantageously chamfered to facilitate its engagement on the pivot.
Avantageusement, l'extrémité du pivot est fendue de manière à former une zone compressible pour faciliter l'engagement de l'extrémité de bielle sur le pivot. La fente, avantageusement disposée diamétralement, s'enfonce de préférence dans la partie extrémale du pivot sensiblement jusqu'au niveau de la rainure d'encliquetage.  Advantageously, the end of the pivot is slotted so as to form a compressible zone to facilitate engagement of the connecting rod end on the pivot. The slot, preferably arranged diametrically, preferably sinks into the end portion of the pivot substantially to the level of the snap groove.
Chaque bielle est avantageusement composée d'une partie centrale définissant un axe et de deux pattes d'extrémité dans chacune desquelles est formé un orifice destiné à s'encliqueter sur le pivot et comportant à cet effet le relief complémentaire d'encliquetage.  Each connecting rod is advantageously composed of a central part defining an axis and two end tabs in each of which is formed an orifice intended to snap on the pivot and comprising for this purpose the complementary snap-fitting relief.
Avantageusement, les pivots sont perpendiculaires au plan médian sur chaque gouttière.  Advantageously, the pivots are perpendicular to the median plane on each gutter.
Avantageusement, la patte d'extrémité de bielle comporte sur son côté intérieur un tronçon cylindrique formé par ladite première section cylindrique.  Advantageously, the connecting rod end lug has on its inner side a cylindrical section formed by said first cylindrical section.
De préférence, la patte d'extrémité de bielle comporte un tronçon cylindrique à pan coupé sur son côté intérieur, destiné à être parallèle et voisin de la gouttière dans cette région, et sur son côté extérieur elle comporte une face parallèle au plan médian des gouttières. Selon une variante de réalisation, inversée par rapport à la première réalisation, le pivot est sous forme d'un demi-axe creux et reçoit un demi- axe formé sur l'extrémité de bielle. Preferably, the rod end end has a cylindrical section with cutaway on its inner side, intended to be parallel and adjacent to the gutter in this region, and on its outer side it has a face parallel to the median plane of the gutters . According to an alternative embodiment, inverted with respect to the first embodiment, the pivot is in the form of a hollow half-axis and receives a half-axis formed on the rod end.
D'autres caractéristiques et avantages de l'invention ressortiront de la description suivante d'exemples de réalisation. Il sera fait référence aux dessins annexés sur lesquels :  Other features and advantages of the invention will emerge from the following description of exemplary embodiments. Reference will be made to the accompanying drawings in which:
La figure 1 est une vue schématique en perspective d'une paire de gouttières conformes à l'invention, munies de leurs deux bielles, articulées grâce aux dispositifs d'articulation de l'invention.  Figure 1 is a schematic perspective view of a pair of gutters according to the invention, provided with their two connecting rods articulated through the hinge devices of the invention.
La figure 2 est une vue de dessus plus détaillée de la paire de gouttières de la figure 1, avec coupe en écorché du détail d'un dispositif d'articulation de l'invention.  Figure 2 is a more detailed top view of the pair of gutters of Figure 1, with cutaway detail of a hinge device of the invention.
La figure 3 est une vue en coupe partielle montrant le détail agrandi F du dispositif d'articulation de la figure 2.  FIG. 3 is a partial sectional view showing the enlarged detail F of the articulation device of FIG. 2.
La figure 4 est une vue analogue à la figure 3 d'une variante du dispositif d'articulation de la figure 2.  FIG. 4 is a view similar to FIG. 3 of a variant of the articulation device of FIG.
La figure 5 est un schéma simplifié d'une variante de réalisation de la figure 3 dans laquelle le pivot de gouttière est perpendiculaire à la gouttière elle-même.  Figure 5 is a schematic diagram of an alternative embodiment of Figure 3 wherein the gutter pivot is perpendicular to the gutter itself.
La figure 6 est un schéma simplifié d'une variante de réalisation de la figure 3 dans laquelle le pivot de gouttière est sous forme d'axe creux.  Figure 6 is a schematic diagram of an alternative embodiment of Figure 3 wherein the gutter pin is in the form of hollow shaft.
On a représenté schématiquement sur la figure 1 la gouttière 10 de l'arcade dentaire de la mâchoire supérieure (ou maxillaire) située au-dessus de la gouttière 11 de l'arcade dentaire de la mâchoire inférieure (ou mandibule). Les deux gouttières d'arcades 10, 11 ont sensiblement une forme de canal creux en U et sont symétriques par rapport au plan médian P du sujet. Le plan d'extension et de contact des gouttières, défini entre les gouttières supérieure et inférieure est défini comme le plan transversal, orthogonal au plan P. La gouttière 11 de l'arcade inférieure est représentée ici en avancée par rapport à la gouttière 10 de l'arcade supérieure.  Diagram 1 shows the gutter 10 of the dental arch of the upper (or maxillary) jaw located above the gutter 11 of the dental arch of the lower jaw (or mandible). The two gutters of arches 10, 11 have a substantially U-shaped hollow channel and are symmetrical with respect to the median plane P of the subject. The plan of extension and contact of the gutters, defined between the upper and lower gutters is defined as the transverse plane, orthogonal to the plane P. The gutter 11 of the lower arch is represented here in advance with respect to the gutter 10 the upper arch.
Les deux gouttières d'arcades 10 et 11 sont reliées par deux bielles 20 articulées chacune à leurs deux extrémités sur des dispositifs d'attaches avant et arrière 30 liés respectivement à une gouttière d'arcade 10 ou 11. Ces deux dispositifs d'attaches sont placés au plus près du plan de contact trans verse de manière à minimiser l'ouverture buccale en propulsion, laquelle entraînerait une perte d'efficacité et de Pinconfort pour le porteur. Les bielles 20 sont en position vestibulaire, latérale aux mâchoires : une de leurs grandes faces plates est dirigée vers les mâchoires tandis que leurs longs bords minces sont dirigés respectivement vers le haut et vers le bas. The two arches gutters 10 and 11 are connected by two rods 20 articulated each at their two ends on front and rear fastening devices 30 respectively connected to an arcuate gutter 10 or 11. These two fasteners are placed as close as possible to the trans contact plane in order to minimize the mouth opening in propulsion, which would result in a loss of efficiency and discomfort for the wearer. The rods 20 are in the buccal position, lateral to the jaws: one of their large flat faces is directed towards the jaws while their long thin edges are directed respectively upwardly and downwardly.
Chaque dispositif d'attache 30 comporte une base 32 et un pivot 33 sous forme de demi-axe cylindrique mâle. La base 32 s'intègre au profil de la coque de la gouttière 10 ou en fait partie intégrante par moulage. Le pivot cylindrique 33, venu de moulage avec la base 32, est perpendiculaire au plan médian P et forme donc un angle avec la base 32. Le pivot comporte une première section cylindrique 34 d'un premier diamètre dl, suivi d'une seconde section cylindrique d'extrémité 35 de plus petit diamètre d2, les deux sections 34, 35 étant séparées par une gorge annulaire à section rectangulaire 36 formant un épaulement 37 sur la première section 34, Cette gorge annulaire 34 forme l'un des deux reliefs complémentaires d'encliquetage. L'extrémité du pivot 33 est fendue au niveau de la seconde section 35 par une fente diamétrale 38 de manière que les deux demi- sections 39 séparées par la fente présentent une certaine flexibilité élastique qui permet de le compresser. Le pivot 33 est réalisé dans une matière thermoplastique relativement rigide et élastique, par exemple du SEBS (un copolymère de styrène-éthylène-butylène-styrène, éventuellement modifié).  Each attachment device 30 comprises a base 32 and a pivot 33 in the form of a male cylindrical half-axis. The base 32 integrates with the profile of the hull of the gutter 10 or integrally by molding. The cylindrical pivot 33, integrally molded with the base 32, is perpendicular to the median plane P and thus forms an angle with the base 32. The pivot comprises a first cylindrical section 34 of a first diameter d1, followed by a second section cylindrical end 35 of smaller diameter d2, the two sections 34, 35 being separated by an annular groove of rectangular section 36 forming a shoulder 37 on the first section 34, this annular groove 34 forms one of two complementary reliefs d snap. The end of the pivot 33 is slotted at the second section 35 by a diametrical slot 38 so that the two half-sections 39 separated by the slot have a certain elastic flexibility that allows to compress it. The pivot 33 is made of a relatively rigid and elastic thermoplastic material, for example SEBS (an optionally modified styrene-ethylene-butylene-styrene copolymer).
Les deux dispositifs d'attache avant et arrière 30 ne diffèrent entre eux que par l'inclinaison plus ou moins grande du pivot 33 par rapport à la base 32, de manière à respecter l'orientation du pivot 33 perpendiculaire au plan médian P.  The two front and rear attachment devices 30 differ from each other only by the greater or smaller inclination of the pivot 33 relative to the base 32, so as to respect the orientation of the pivot 33 perpendicular to the median plane P.
Chaque bielle 20 est constituée par une plaquette sensiblement rigide, en forme de Z allongé et aplati, obtenue avantageusement par moulage d'une matière plastique. Elle comporte un corps principal 21, sous forme de plaque mince allongée, par exemple d'1 mm ou moins, aux extrémités duquel sont formées, avec un angle, deux pattes arrondies 22 définissant par leurs faces extérieures des plans parallèles distincts parallèles au plan médian P quand la bielle 20 est en place. Ces deux plans sont écartés d'une distance non nulle correspondant à l'écart d'implantation entre les dispositifs d'attache avant et arrière 30. L'épaisseur des pattes 22 est supérieure à celle de la partie centrale 21 de bielle, pour pouvoir y former les moyens de coopération en articulation avec le dispositif d'attache 30. La patte forme la douille dans laquelle tourillonne le demi-axe mâle 33. A cette fin, la patte 22 est percée d'un orifice 25 comportant une première section cylindrique 23, du côté tourné vers l'arcade, suivie d'une seconde section 24, séparée de la première section 23 par une nervure intérieure circulaire 26,laquelle nervure 23 forme le second relief complémentaire d'encliquetage. Le diamètre Dl de la première section 23 est juste légèrement supérieur au diamètre dl de la première section 34 du pivot 33 pour laisser un jeu d'articulation minime suffisant pour permettre l'introduction du pivot dans l'orifice de la bielle. Le diamètre D2 de la seconde section 24 est supérieur au diamètre d2 de la seconde section 35 du pivot 33, avec un jeu supérieur à celui entre les premières sections de pivot et de patte. Les dimensions de la nervure 26 sont telles que la nervure 26 peut se loger dans la gorge 36 du pivot, avec un jeu minime dans le sens de l'axe du pivot, ce qui permet l'encliquetage axial bidirectionnel. Dans la position encliquetée, la bielle est maintenue à distance dans la base 32 et ne la touche pas, dans aucune position. La nervure 26 comporte une face chanfreinée tronconique 28 pour permettre plus facilement sa mise en place ; la surface divergente 28 a son diamètre qui diminue avec l'éloignement de la gouttière. Un bord arrondi ou chanfreiné est prévu à son extrémité de plus petit diamètre pour faciliter le désengagement du pivot. Lors du passage de Porifïce 25 de la patte 22 sur le pivot 33, la nervure 26 dans un premier temps porte par sa face 29, dirigée vers la gouttière, sur les deux demi-sections d'extrémité 39 du pivot 33, qui sont chanfreinées sur leur bord et peuvent se resserrer élastiquement l'une contre l'autre en absorbant le volume de la fente 38, de sorte que la nervure 26 peut s'enfoncer sur le pivot et atteindre la rainure 36 dans laquelle elle vient se loger, sa face 29 venant buter sur l'épaulement 37 de la rainure 36. Une fois la nervure 26 en butée, les deux demi-sections 39 reprennent par élasticité leur position écartée et bloquent en position la nervure 26 dans la rainure 36. Each rod 20 is constituted by a substantially rigid plate, Z-shaped elongated and flattened, preferably obtained by molding a plastic material. It comprises a main body 21, in the form of an elongated thin plate, for example of 1 mm or less, at the ends of which are formed, with an angle, two rounded tabs 22 defining, by their outer faces, parallel planes parallel to the median plane P when the rod 20 is in place. These two planes are spaced apart by a non-zero distance corresponding to the implantation gap between the front and rear attachment devices 30. The thickness of the tabs 22 is greater than that of the central portion 21 of connecting rod, in order to be able to there forming the means of cooperation in articulation with the fastening device 30. The tab forms the sleeve in which the male half-axis 33 pivots. For this purpose, the tab 22 is pierced with an orifice 25 having a first cylindrical section 23, on the side facing the arch, followed by a second section. 24, separated from the first section 23 by a circular inner rib 26, which rib 23 forms the second complementary latching relief. The diameter D1 of the first section 23 is just slightly greater than the diameter d1 of the first section 34 of the pivot 33 to leave a minimum clearance of articulation sufficient to allow the introduction of the pivot in the port of the connecting rod. The diameter D2 of the second section 24 is greater than the diameter d2 of the second section 35 of the pivot 33, with a greater clearance than between the first pivot and leg sections. The dimensions of the rib 26 are such that the rib 26 can be housed in the groove 36 of the pivot, with minimal play in the direction of the axis of the pivot, which allows bidirectional axial latching. In the latched position, the connecting rod is kept at a distance in the base 32 and does not touch it, in any position. The rib 26 has a tapered chamfered face 28 to facilitate its installation; the diverging surface 28 has its diameter which decreases with the distance of the gutter. A rounded or chamfered edge is provided at its end of smaller diameter to facilitate the disengagement of the pivot. During the passage of Porificce 25 of the tab 22 on the pivot 33, the rib 26 in a first stage carries by its face 29, directed towards the gutter, on the two half-end sections 39 of the pivot 33, which are chamfered on their edge and can tighten elastically against each other by absorbing the volume of the slot 38, so that the rib 26 can be inserted on the pivot and reach the groove 36 in which it is housed, its face 29 abutting on the shoulder 37 of the groove 36. Once the rib 26 in abutment, the two half-sections 39 elastically take up their spaced position and lock in position the rib 26 in the groove 36.
Les bielles sont réalisées par moulage d'un matériau plastique tel que du POM (polyoxyméthylène) ou du polycarbonate.  The connecting rods are made by molding a plastic material such as POM (polyoxymethylene) or polycarbonate.
Contrairement à la représentation du schéma, la fente 38 peut aussi être orientée non pas perpendiculairement à l'axe général de la bielle mais parallèlement à lui pour mieux résister aux forces de propulsion lors de l'utilisation de l'orthèse. Unlike the representation of the diagram, the slot 38 can also be oriented not perpendicularly to the general axis of the connecting rod but parallel to it to better withstand propulsive forces when using the orthosis.
Sur le mode de réalisation des figures 1 à 3, le première partie cylindrique 23 est formée dans un manchon cylindrique à pan oblique disposé parallèlement à la base 32 du dispositif d'attache et relativement proche de celle-ci, alors que dans le mode de réalisation de la figure 4, qui pour l'essentiel est similaire à ce qu'on a décrit plus haut, la première partie cylindrique 23 est formée dans un manchon cylindrique court à bases parallèles entre elles et à la face des pattes 22.  In the embodiment of FIGS. 1 to 3, the first cylindrical part 23 is formed in a cylindrical sleeve with an oblique pan disposed parallel to the base 32 of the fastening device and relatively close to the latter, whereas in the embodiment of FIG. embodiment of FIG. 4, which essentially is similar to that described above, the first cylindrical portion 23 is formed in a short cylindrical sleeve with bases parallel to each other and to the face of the tabs 22.
Bien entendu, comme dans l'invention du document EP 2 143 397, les deux bielles qu'on a montrées appartiennent à un jeu de plusieurs bielles de longueurs différentes, destinées à s'adapter à différentes avancées d'une mâchoire par rapport à l'autre, lors du processus de titration.  Of course, as in the invention of EP 2 143 397, the two connecting rods that have been shown belong to a set of several connecting rods of different lengths, intended to adapt to different advances of a jaw with respect to the other, during the titration process.
Selon l'invention, pour obtenir les meilleurs résultats avec les gouttières de l'invention, il est important de respecter certaines dimensions.  According to the invention, to obtain the best results with the gutters of the invention, it is important to respect certain dimensions.
Ainsi, le diamètre dl du corps du pivot 33 est de préférence égal à 5mm ± 1,5mm pour obtenir une résistance importante aux forces imposées lors de la propulsion de la mandibule. Plus petit, le pivot risque de fléchir et la fixation deviendrait inefficace ; plus gros, le volume du système pivot/bielle serait trop important et créerait de l'inconfort. Le diamètre d2 de l'extrémité du pivot 33 est de préférence égal à 4,8mm ± 1,5mm.  Thus, the diameter dl of the body of the pivot 33 is preferably equal to 5mm ± 1.5mm to obtain a significant resistance to the forces imposed during the propulsion of the mandible. Smaller, the pivot may bend and the attachment becomes ineffective; bigger, the volume of the system pivot / connecting rod would be too important and create discomfort. The diameter d2 of the end of the pivot 33 is preferably equal to 4.8mm ± 1.5mm.
La longueur totale du pivot 33, comptée sur son axe central à partir de son engagement dans la gouttière, est avantageusement de 7,23mm ± 1,5mm, pour d'une part offrir une surface de prise et de contact suffisante avec la bielle, notamment au niveau du manchon cylindrique constituant sa première section cylindrique, et donc assurer une bonne résistance en propulsion, et d'autre part limiter le volume en bouche. Coopérant avec le pivot, la longueur du manchon cylindrique de l'extrémité de bielle 23 est avantageusement de 3,32mm ± 1,5mm, comptée sur sa plus longue génératrice, et 1,05 ± 0,5mm sur sa plus courte génératrice, pour assurer un bon contact mais ne pas entrer en contact avec la gouttière.  The total length of the pivot 33, counted on its central axis from its engagement in the gutter, is preferably 7.23mm ± 1.5mm, firstly to provide a gripping surface and sufficient contact with the connecting rod, in particular at the cylindrical sleeve constituting its first cylindrical section, and thus ensure good resistance in propulsion, and secondly limit the volume in the mouth. Cooperating with the pivot, the length of the cylindrical sleeve of the rod end 23 is advantageously 3.32mm ± 1.5mm, counted on its longest generatrix, and 1.05 ± 0.5mm on its shorter generator, for ensure good contact but do not come in contact with the gutter.
La fente 38 présente avantageusement une largeur de 0,8 ± 0,2mm et une profondeur de 2,2mm ± 0,8mm. Plus profonde et/ou plus large, la fente rendrait l'attache moins résistante et la bielle pourrait se désengager du pivot sous l'effet des forces exercées lors de la propulsion. Moins profonde et/ou moins large, le désengagement des bielles nécessaire au processus de titration (avancée millimétrique de la mandibule) serait rendu difficile et impliquerait une déformation de la partie extrémale 39 du pivot 33 sous l'effet du frottement, entraînant une perte d'efficacité du système d'attache. The slot 38 advantageously has a width of 0.8 ± 0.2 mm and a depth of 2.2 mm ± 0.8 mm. Deeper and / or wider, the slot would make the fastener less resistant and the connecting rod could disengage from the pivot under the effect of the forces exerted during the propulsion. Shallower and / or less wide, the disengagement of the rods necessary for the titration process (millimeter advanced mandible) would be made difficult and would involve deformation of the end portion 39 of the pivot 33 under the effect of friction, resulting in a loss of efficiency of the fastening system.
Selon la variante de réalisation de la figure 5, le pivot 33" qui reçoit la partie en douille de la patte 22" est disposé perpendiculaire localement à la gouttière, et non plus perpendiculaire au plan médian des gouttières.  According to the embodiment of Figure 5, the pivot 33 "which receives the sleeve portion of the tab 22" is disposed perpendicular to the local gutter, and no longer perpendicular to the median plane of the gutters.
Selon la variante de réalisation de la figure 6, l'articulation mâle et l'articulation femelle sont inversées. Le pivot 33' solidaire de la base 32' forme une douille dans laquelle vient s'encliqueter un demi-axe mâle formé sur la patte 22' au bout du corps de bielle 21 '.  According to the variant embodiment of FIG. 6, the male articulation and the female articulation are reversed. The pivot 33 'secured to the base 32' forms a socket in which is snapped a male half-axis formed on the lug 22 'at the end of the rod body 21'.

Claims

REVENDICATIONS
1. Paire de gouttières dentaires (10, 11) définissant un plan médian (P) et un plan transversal, comprenant deux pivots latéraux (33) sur chaque gouttière (10, 1 1) destinés à articuler les extrémités (22) de deux bielles sensiblement rigides (20) disposées en position vestibulaire et reliant latéralement respectivement un pivot (33) d'une gouttière (10) à un pivot (33) de l'autre gouttière (1 1), le pivot (33) comportant des moyens d'encliquetage élastique des extrémités de bielles (33) caractérisé en ce que ces moyens d'encliquetage sont constitués par des reliefs sensiblement complémentaires (26, 36) de type rainure et nervure prévus sur la périphérie cylindrique du pivot (33) et dans l'extrémité (22) de bielle, lesdits reliefs (26, 36) étant disposés entre une première section cylindrique (23, 34) et une seconde section cylindrique (24) de manière à se bloquer en position l'un dans l'autre. 1. Pair of dental gutters (10, 11) defining a median plane (P) and a transverse plane, comprising two lateral pivots (33) on each gutter (10, 1 1) intended to articulate the ends (22) of two connecting rods substantially rigid (20) disposed in the buccal position and laterally connecting respectively a pivot (33) of a gutter (10) to a pivot (33) of the other gutter (1 1), the pivot (33) having means of elastic snap-fastening of the ends of rods (33), characterized in that these latching means are constituted by substantially complementary groove and rib-like reliefs (26, 36) provided on the cylindrical periphery of the pivot (33) and in the end (22) connecting rod, said reliefs (26, 36) being disposed between a first cylindrical section (23, 34) and a second cylindrical section (24) so as to lock in position one in the other.
2. Paire de gouttières selon la revendication 1, caractérisée en ce que le relief (36) est une rainure prévue sur la périphérie cylindrique du pivot (33), destiné à coopérer avec une nervure interne (26) prévue dans l'extrémité (22) de bielle, 2. Pair of gutters according to claim 1, characterized in that the relief (36) is a groove provided on the cylindrical periphery of the pivot (33) intended to cooperate with an internal rib (26) provided in the end (22). ) of connecting rod,
3. Paire de gouttières selon la revendication 2, caractérisée en ce que la nervure (26) est chanfreinée. 3. Pair of gutters according to claim 2, characterized in that the rib (26) is chamfered.
4. Paire de gouttières selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la partie extrémale (39) du pivot est fendue de manière à former une zone compressible pour favoriser l'engagement de l'extrémité (22) de bielle sur le pivot (33). 4. Pair of gutters according to any one of claims 1 to 3, characterized in that the end portion (39) of the pivot is slotted so as to form a compressible zone to promote the engagement of the end (22) of connecting rod on the pivot (33).
5. Paire de gouttières selon la revendication 4 et la revendication 2 combinées, caractérisée en ce que la fente (38) est diamétrale et s'enfonce dans la partie extrémale (39) du pivot (33) sensiblement jusqu'au niveau de la rainure (36) d'encliquetage. 5. Pair of gutters according to claim 4 and claim 2 combined, characterized in that the slot (38) is diametrical and sinks into the end portion (39) of the pivot (33) substantially up to the groove (36) snap.
Paire de gouttière selon l'une quelconque des revendications 1 à 5, dans laquelle les pivots (33) sont perpendiculaires au plan médian (P) sur chaque gouttière (10, 11) Pair of gutter according to any one of claims 1 to 5, wherein the pivots (33) are perpendicular to the median plane (P) on each gutter (10, 11)
7. Paire de gouttières selon l'une quelconque des revendications 1 à 6, caractérisée en ce que chaque bielle (20) est avantageusement composée d'une partie centrale (21) définissant un axe et de deux pattes d'extrémité (22) dans chacune desquelles est formé un orifice (23 ; 24)) destiné à s'encliqueter sur le pivot (33) et comportant à cet effet le relief complémentaire (26) d'encliquetage. 7. Pair of gutters according to any one of claims 1 to 6, characterized in that each rod (20) is advantageously composed of a central portion (21) defining an axis and two end tabs (22) in each of which is formed an orifice (23; 24)) intended to snap on the pivot (33) and having for this purpose the complementary relief (26) snap.
8. Paire de gouttières selon la revendication 7, caractérisée en ce que la patte d'extrémité de bielle (22) comporte sur son côté intérieur un tronçon cylindrique formé par la première section cylindrique (23) . 8. pair of gutters according to claim 7, characterized in that the connecting rod end lug (22) has on its inner side a cylindrical section formed by the first cylindrical section (23).
9. Paire de gouttières selon la revendication 8, caractérisée en ce que la patte d'extrémité (22) de bielle comporte un tronçon cylindrique (23) à pan coupé sur son côté intérieur, destiné à être parallèle et voisin de la gouttière dans cette région, et sur son côté extérieur elle comporte une face parallèle au plan médian des gouttières. 9. Pair of gutters according to claim 8, characterized in that the connecting end end (22) comprises a cylindrical section (23) with cutaway on its inner side, intended to be parallel and adjacent to the gutter in this region, and on its outer side it has a face parallel to the median plane of the gutters.
10. Paire de gouttières selon l'une quelconque des revendications 8 ou 9, caractérisée en ce que la longueur du manchon cylindrique (23) est de 3,32 mm ± 1,5 mm. 10. Pair of gutters according to any one of claims 8 or 9, characterized in that the length of the cylindrical sleeve (23) is 3.32 mm ± 1.5 mm.
PCT/FR2011/052182 2010-09-22 2011-09-21 Dental trays with connecting rods articulated on pivots WO2012038663A1 (en)

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WO2016112891A1 (en) 2015-01-12 2016-07-21 Yildiz, Fahri Two-part mandibular advancement splint
US11911235B2 (en) 2017-06-22 2024-02-27 Konrad Hofmann Occlusal splint arrangement with a fixing band

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FR2993769B1 (en) * 2012-07-24 2014-08-08 Oniris INTRABUCCAL DEVICE WITH DENTAL GUTTERS AND RODS
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WO2016112891A1 (en) 2015-01-12 2016-07-21 Yildiz, Fahri Two-part mandibular advancement splint
US11033422B2 (en) 2015-01-12 2021-06-15 Fahri Yildiz Two-part mandibular advancement splint
US11911235B2 (en) 2017-06-22 2024-02-27 Konrad Hofmann Occlusal splint arrangement with a fixing band

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