Device to aid in bonding a retention wire

Abstract

The present invention relates to a device (1) for bonding a retaining wire (2) to a tooth (3). Said device (1) comprises a first part (11) and a second part (12) having respectively a first set of receiving zones (111) and a second set of receiving zones (121) for said retaining wire (2), assembly means (112, 122) between said parts (11, 12), and positioning means (115, 125) on said tooth (3). When said parts (11, 12) are assembled, the movement of said retaining wire (2) is blocked. The assembly means (112, 122) and the second set of receiving zones (121) are configured to allow a joint movement of dissociation of the second part (12) with respect to the first part (11) and of release of the retaining wire (2) with respect to the second set of receiving zones (121). Figure 1

Description

Title of the invention: Device to aid in bonding a retention wire. Technical field

[0001] The present invention relates to the field of orthodontic wires, in particular retention wires.

[0002] The present invention relates more particularly to a device for assisting in the bonding of a retaining wire, as well as to an associated bonding aid method and manufacturing method.

[0003] The present invention will thus find many advantageous applications in the field of orthodontic treatments. Previous art

[0004] After orthodontic treatment, particularly treatment aimed at modifying the position of teeth in a dentition, the teeth may continue to move. They thus tend to return to a stage prior to the orthodontic treatment, or even to evolve into a new, unexpected position that may cause abnormalities.

[0005] By dentition, we mean the set of teeth of a person, dentition corresponding to the dynamic process of tooth formation (of the dentition).

[0006] Orthodontic retention aims to maintain the alignment of the dentition acquired after orthodontic treatment, that is, to keep the teeth in place. Such retention may be permanent or until the bone surrounding the roots of the teeth fixes the dentition in a new arrangement.

[0007] Several means of performing orthodontic retention are known, primarily retention splints and retention wires.

[0008] Retainer splints are devices designed to surround, protect, and support the entire dentition, generally made of transparent plastic. A retainer splint, for example, takes the form of a negative of the dentition obtained after orthodontic treatment.

[0009] The retainer splint thus represents a cumbersome and restrictive device for the patient. Furthermore, as stated previously, since retention techniques are designed for long-term, even lifelong, use, it is important to ensure that the patient actually continues to wear the retainer. The use of retainers is therefore limited, as it is too restrictive.

[0010] Another solution, used in conjunction with or as a replacement for retainers, is the retainer wire.

[0011] A retention wire is a metal alloy wire bonded to the lingual surface of the teeth, that is, towards the inside of the teeth. The retention wire is generally placed at the end of orthodontic treatment and extends from one canine to the other, or even from one premolar to the other. These wires provide lighter retention and do not provide transverse support for the teeth, but are therefore much easier to wear.

[0012] The retention wire is shaped to follow the desired profile of the dentition. The retention wire thus resists tooth movement. The retention wire is sometimes made of a shape-memory material, so as to force the teeth to maintain the position achieved at the end of treatment. Such a solution therefore requires precise placement of the retention wire, so that the profile against which the wire is shaped, for example a cross-section of the dentition, corresponds precisely to the profile to which the wire is bonded.

[0013] There are therefore bonding aid devices which are configured to help position the retainer wire and hold it in position with respect to the dentition.

[0014] The Applicant observes that such devices require both to hold the wire in position, to free access to the wire to allow its gluing, and to detach easily from the wire once the gluing has been done.

[0015] However, it appears that the solutions currently proposed do not allow for simple separation of the retaining wire once glued, resulting in handling errors, wire detachment or wire breakage after application.

[0016] The Applicant therefore submits that there is currently no satisfactory alternative solution for a device to aid in bonding a retention wire that facilitates both the placement of the wire and the removal of the device after placement. Summary of the invention

[0017] The present invention aims to improve the current situation described above.

[0018] The present invention is more particularly aimed at overcoming the following drawbacks: above by proposing a device to aid in the gluing of a retention wire allowing for simplified removal once the wire is glued.

[0019] To this end, the object of the present invention relates in a first aspect to a device for assisting in the bonding of a retention wire to a denture, the device comprising: - a first part comprising a first set of areas for receiving and holding the retaining wire, ; - a second room comprising a second set of reception and retention wire zones; - means for removable assembly between the first part and the second part; and - positioning means configured to bear on the teeth, the positioning means being implemented on at least the first part.

[0020] In other words, the first and second parts each have means for receiving the retention wire and can be assembled and separated. The areas for receiving and retaining the retention wire correspond, for example, to grooves sized to receive the retention wire. The first part, and optionally the second part, also have positioning means to allow the device to be placed on the dentures.

[0021] It is understood here that the device is adapted for bonding a retention wire to the teeth. Preferably, the device is adapted for assisting in bonding a retention wire to the lingual surface of the teeth. The device, particularly the positioning means, has, for example, a specific shape adapted to the shape of the teeth. Similarly, the device, particularly the receiving and retaining areas for the retention wire, has, for example, a specific shape adapted to the profile of a precise retention wire. The teeth may correspond to the lower or upper dentition, preferably the upper dentition. The positioning means' support on the teeth, particularly on the upper teeth, corresponds, for example, to a precise fit with the teeth, so that the device stays naturally in place on the teeth once assembled, without risk of detachment, even under the action of gravity.A person skilled in the art also understands that the use of the device, and the placement of the retention wire, are more difficult on lower teeth, due to the presence of the tongue, which naturally pushes against the device.

[0022] Naturally, the receiving and retaining zones for the retention wire are dimensioned so that, when the parts are assembled, with the wire positioned in the receiving zones, and at least the first part placed against the teeth via the positioning means, the wire is positioned relative to the teeth in such a way as to allow its bonding to the teeth. The device also has an open structure allowing access to the retention wire, particularly to the portions of the wire outside the receiving zones, so as to allow these portions to be bonded to the teeth.

[0023] Throughout the application, it is understood that the assembly of the two parts corresponds to a transition to an assembled position, which is a "final" position in which the two parts are arranged relative to each other so that the device has the desired shape for assisting in the bonding of the retention wire. For example, the device is initially designed in the assembled form, the two parts being designed based on the device's initial shape. The assembled position, or final position, thus corresponds to the assembly of the two parts in such a way as to place and bond the retention wire; the two parts can subsequently be separated.

[0024] Advantageously, the first and second sets of receiving and retaining wire zones are configured to jointly block the movement of the retaining wire when the first and second pieces are assembled, the removable assembly means and the second set of receiving zones being configured to allow a joint movement of dissociation of the second piece with respect to the first piece and release of the retaining wire with respect to the second set of receiving zones.

[0025] In other words, if the retention wire can be freely assembled and disassembled from the first or second part via the first or second set of receiving zones, the retention wire is held in position once the two parts are assembled. The wire can, for example, still be assembled in the device after the parts are assembled, for example by deforming it, but at rest, it remains held in position by the device. In particular, when the parts are assembled and the device is placed against the teeth, the retention wire is locked in position and cannot move in any direction.

[0026] Furthermore, the wire can be removed from the device by removing the second part from the first part, which simultaneously releases the retention wire from the second set of receiving areas. The retention wire is then only located in the first set of receiving areas, from which it can be freely removed, particularly when the first part is removed from the denture.

[0027] This design thus ensures both secure retention of the retaining wire during its placement and bonding, guaranteeing precise positioning through the design of the receiving zones and lasting retention through the combined action of the first and second parts, and allows for removal of the device once the retaining wire is bonded, without this same retention of the wire complicating the removal process. Separation of the two parts naturally results in the release of the retaining wire.

[0028] Thanks to the present invention, the retention wire can be placed precisely opposite a denture, glued without risk of changing position, then released from the device without risk of breakage or detachment.

[0029] In an advantageous embodiment of the present invention, the first part has a substantially arched shape following the teeth and defining two ends, the first set of receiving areas comprising two receiving areas arranged according to the ends.

[0030] In other words, the first piece has a curvature following the curvature of the dentition, just as the retention wire follows the profile of the dentition. The first piece thus ensures retention along the entire length of the retention wire. The first piece extends, for example, over a length similar to that of the retention wire, for example from canine to canine or from premolar to premolar, depending on the design of the retention wire. In addition, the arched shape of the first piece allows it to bear on a large surface of the dentition, so as to ensure good stability, as well as not to interfere with the adhesive of the retention wire unlike a straight shape.

[0031] The two receiving zones are thus arranged near, or in the vicinity of, the extremities, that is to say according to the extreme portions of the arched shape.

[0032] Preferably, the first set of receiving zones consists of two receiving zones arranged at the ends. The central support for the retaining wire is then provided, in a complementary manner, by the second part. The other portions of the retaining wire are then free to allow for the bonding of the retaining wire.

[0033] In an additional embodiment, the removable assembly means are arranged between a central part of the first part and the second part, so that the second set of receiving areas is arranged according to the central part when the first part and the second part are assembled.

[0034] In other words, the second part is assembled with a central portion of the first part. The second part, for example, has smaller dimensions than the first part and functions as a locking key for the device.

[0035] The second set of receiving zones is therefore centrally located with respect to the first part. The second part has, for example, a groove forming a central receiving zone for the retaining wire.

[0036] This design allows for simple and symmetrical implementation of the device, which ensures that the retention of the wire, particularly via the second part, is not asymmetrical. The retention wire is thus held evenly, also allowing for symmetrical placement of the wire's adhesive points when the device is assembled.

[0037] This design also allows a simple arrangement of the assembly means and the second set of receiving areas along the same face of the second piece, corresponding for example to a "front" face, facilitating the removal of the second piece in relation to the joint removal of the first piece and the retaining wire, as described below.

[0038] This design is also particularly advantageous when combined with a first arched piece as described above. The device then retains the ends of the retaining wire via the receiving zones at the ends of the first piece, and retains a central portion of the retaining wire via the second piece located in the center of the first piece.

[0039] In a further embodiment, the positioning means comprise a first face formed on the first part, the first face forming at least partially a negative of the teeth, the first piece being configured to bear on the teeth via the first face.

[0040] It is understood here that this design corresponds to providing a first part whose shape is adapted to that of the teeth, in particular a first part that can be placed on the teeth by a vertical movement. Such a first part has a more complex shape, but is also more stable since it is held in position by contact with the profile of the teeth. The device is, for example, designed as a single unit with respect to a specific set of teeth.

[0041] The first face corresponds for example to a lower face configured to bear on a lower tooth or an upper face configured to bear on an upper tooth.

[0042] According to another embodiment, the first part, in particular the first face, has a malleable structure allowing it to adapt to the teeth. In this design, the first part is placed against the teeth so that the first face deforms and takes the form of a negative of the teeth.

[0043] In one embodiment, the positioning means include a second face formed on the second part, the second face forming at least partially a negative of the teeth, the second part being configured to bear on the teeth via the second face.

[0044] It is understood here that, in this embodiment, the positioning means are implemented on both the first and second parts. The second part therefore also bears against the teeth, and thus further stabilizes the bearing of the device on the teeth.

[0045] Taking into account the relative positioning of the first piece, the second piece and the retaining wire, the second face forms a negative of a base of the teeth.

[0046] Preferably, the second face presents the second set of receiving zones. Thus, the retention wire is locked, at the level of the second set of receiving zones, between the dentition and the second face.

[0047] The second face corresponds for example to a lateral face of the second piece, in accordance, as stated below, with an engagement and withdrawal of the second piece along a second substantially horizontal axis.

[0048] As before, a variant is also conceived in which the second part, in particular the second face, has a malleable structure allowing it to adapt to the teeth. The second part then deforms when the device is placed on the teeth, so that the second face takes the form of a negative of the teeth.

[0049] In yet another embodiment, the first part extends substantially along a horizontal plane, the first part comprising a set of support portions extending orthogonally to the horizontal plane, so that the set of support portions forms a set of support points of the first part on the teeth.

[0050] It is understood here and throughout the application that the notions of horizontal and vertical will be understood in reference to the position of a dentition, which extends substantially in a horizontal plane corresponding to a reference position of a dentition of a person in a normal standing position.

[0051] It is understood here that the support portions correspond to protrusions of the first part, which bear against the walls of the denture, for example simultaneously on the lingual and buccal (or external) surfaces of the denture. The support portions thus form a clamp extending from the device 1 to grip the denture, assist in positioning the device, and maintain it in position on the denture.

[0052] Preferably, the support of the first part on the teeth is ensured on the one hand by the first face of the first part, which blocks a vertical movement in the direction of the teeth, on the other hand by the support portions, which block a horizontal movement.

[0053] It is also understood that the receiving areas can also be at least partially provided in the support portions, this design allowing the first piece to be positioned offset from the retaining wire, freeing access to the retaining wire outside the receiving areas.

[0054] In another embodiment that can be combined with the preceding embodiments, the removable assembly means include a cavity disposed along one of the parts and a protrusion disposed along the other of the parts, the protrusion having a shape complementary to the cavity and being able to be inserted into and removed from the cavity.

[0055] The protrusion thus corresponds to a tenon and the cavity to a mortise of a tenon-mortise assembly, allowing the assembly between the two pieces.

[0056] Preferably, the protrusion and the cavity have a substantially trapezoidal shape corresponding to a dovetail joint.

[0057] The dovetail joint, for example, advantageously has a progressively decreasing cross-section; that is, the protrusion and the cavity each have a cross-section whose dimensions decrease according to their direction of assembly. This design facilitates the insertion of the protrusion into the cavity while forming an increasingly tight fit, until it reaches the intended final position corresponding to the desired assembly of the device.

[0058] Preferably, the first part has the cavity and the second part has the protrusion of complementary shape to the cavity and can be inserted into and removed from said cavity.

[0059] This design thus allows the realization of a removable assembly between the first part and the second part, by sliding the parts so that the protrusion inserts into the cavity, and locking the relative movement of the two parts in the other directions.

[0060] In an additional embodiment, the device further includes an opening provided so that, when the first part and the second part are assembled, the opening communicates between an external portion of the device and the protrusion, the opening allowing the passage of a tool for the dissociation of the second part.

[0061] Preferably, the first part has the opening and the second part has the protrusion.

[0062] It is understood here that the opening allows, when the parts are assembled, i.e., in the final position defined above, access to an internal portion between the two parts on which to apply pressure, so as to facilitate the separation of the two parts. The internal portion corresponds, for example, to a "frontal" portion with respect to the direction of assembly of the parts, so that the tool applies pressure in the opposite direction. The opening is, for example, sized for the passage of a probe, commonly used in orthodontics. This design thus makes it possible to achieve a robust assembly between the two parts, for example, a precise fit between the protrusion and the cavity, while ensuring the separation of the parts once assembled, more easily than by pulling on the second part.

[0063] In one embodiment, the first part is configured to be supported and removed from the denture along a first axis, the first set of receiving zones allowing the engagement and removal of the retention wire along the first axis.

[0064] The first axis is for example substantially vertical, so as to perform a movement of placing the first part on the teeth.

[0065] It is understood here that this design makes it possible to ensure that the removal of the first piece of the denture, once the retention wire has been glued, is done in such a way as to simultaneously release the retention wire from the first piece, and therefore without damaging the retention wire.

[0066] The first set of receiving zones corresponds, for example, to grooves extending in a plane orthogonal to the first axis, or at a minimum having an opening along the first axis, so that the retaining wire is inserted and withdrawn vis-à-vis the grooves by a movement along the first axis.

[0067] In a specific embodiment, the removable assembly means allow the second part to be assembled with the first part according to a second axis, the second set of receiving zones allowing the engagement and removal of the retention wire along the second axis.

[0068] The second axis is preferably substantially horizontal, so as to allow the removal of the second part by pulling on the second part towards the inside of the teeth.

[0069] As before, this design ensures that the same movement of the second piece along the second axis allows the second piece to be removed once the retaining wire is glued, simultaneously dissociating the second piece from the first piece and the retaining wire, without deforming or damaging the wire.

[0070] It is further understood that assembly means such as those described above, in particular dovetail assembly means, allow assembly and separation of parts via a translational movement along a single direction, preferably along the second axis.

[0071] In a particular embodiment, the first set of receiving zones and the second set of receiving zones allow the engagement and withdrawal of the retaining wire in two different directions.

[0072] In other words, the first set of receiving zones allows the retention wire to be inserted and withdrawn in a first direction, and the second set of receiving zones allows the retention wire to be inserted and withdrawn in a second direction distinct from the first direction. The first direction corresponds, for example, to the first axis and the second direction corresponds, for example, to the second axis.

[0073] This design ensures that, when the parts are assembled, the wire cannot be easily removed without deforming it. The retaining wire cannot be removed by movement in either direction, nor by any movement in a plane defined by both directions, and is thus held in position by the assembled device.

[0074] According to a second aspect, the present invention relates to a method for bonding a retaining wire to a tooth using a device according to the first aspect of the present invention, the method comprising the following steps: - obtaining an assembly between the device and the retaining wire; - placing at least the first part against the teeth; - gluing the retainer wire onto the teeth; - removal of the second piece from the first piece and removal of the retaining wire from the second set of receiving areas; and - removal of the first piece in relation to the teeth and removal of the retention wire in relation to the first set of receiving areas.

[0075] According to a preferred embodiment, the assembly of the retention wire in the receiving areas corresponds to an assembly of the retention wire in the assembled device, the retention wire being made of a flexible shape-memory material and deformed to be assembled in the device, then immediately returning to its folded shape. The retention wire is, for example, assembled first in the second set of receiving areas of the second part, particularly when this second set of receiving areas is arranged along a central portion of the device. This design allows the center of the retention wire (for example, marked for identification) to be precisely positioned with the center of the device (also marked). The device assembled with the retention wire is then pressed against the teeth.

[0076] Other variations are also possible, including assembling the retaining wire in the first set of receiving zones, then assembling the second part onto the first part, resulting in the retaining wire being assembled in the second set of receiving zones. This design is advantageous when the first set of receiving zones is located at the ends of the device and the ends, as well as the length of the retaining wire, are precisely defined so as to allow for a precise fit of the wire ends.

[0077] Similarly, the first piece is for example put in support after assembling the retaining wire with the first piece, and before assembling the second piece on the first piece.

[0078] In all variants, after the assembly of the retention wire, the first part, and the second part, and the positioning of the first part and possibly the second part on the denture, resulting in the positioning of the retention wire, the retention wire is bonded to the denture. Bonding corresponds, for example, to the application of adhesive dots between the wire and the teeth, along the wire, outside the receiving and interdental areas. In other words, the assembly of the device and the retention wire, combined with the support of the device on the denture, defines a set of free areas of the retention wire, at which the retention wire can be bonded to the denture. Bonding is thus carried out at the free areas, for example, on each free tooth. Those skilled in the art understand that such bonding is generally performed using a curing light.

[0079] The second piece is then removed, which simultaneously results in the wire being withdrawn from the second set of receiving zones, without deforming the wire. In other words, the removal of the second piece is carried out without interfering with the first piece. The removal of the second piece is also carried out without interfering with the retaining wire. Once the second piece is removed, the first piece can can also be freely withdrawn, resulting in a withdrawal of the wire from the first set of receiving areas, without deforming the wire.

[0080] After the removal of the second and / or first part, new free areas are created, and bonding can be completed in these new free areas. For example, bonding is completed after the removal of the entire device, with the retention wire held in place by the initial adhesive points. This final bonding phase generally involves bonding the retention wire to each tooth of the denture. In other words, the method advantageously includes a bonding phase following the removal of the second and / or first part, in areas freed by this removal or these removals.

[0081] Such a procedure is preferably carried out manually by the practitioner. However, implementation via computer means is also possible, for example, a processor controlling an automated system configured to manipulate the retention wire, the first piece, the second piece, and the adhesive application means. Such implementation can be partially carried out via such an automated system, with the practitioner performing the initial placement on the patient's dentures and the subsequent steps.

[0082] According to a third aspect, the present invention relates to a method for manufacturing a device according to the first aspect of the present invention, the method comprising the following steps: - obtaining a first data representative of the dentition after orthodontic treatment, i.e. the corrected dentition, and a second data representative of the retention wire in position on the dentition after orthodontic treatment; - determining a third piece of data representative of a shape of the device as a function of the first and second pieces of data; and - manufacturing the device based on the third piece of data.

[0083] As before, such a process can be implemented by the practitioner, for example using computer-aided design tools. Such a process can also be implemented by computer means, for example via a processor.

[0084] In particular, the device is preferably manufactured by three-dimensional printing. The processor, for example, controls three-dimensional printing means based on the third piece of data.

[0085] It is understood here that the shape of the device, as defined in the third data point, includes the characteristics of the device according to the first aspect of the invention.

[0086] Thus, the shape of the device defines that the device has the first part and the second part, the presence of areas for receiving and maintaining the retaining wire, removable assembly and positioning means are provided to allow, on the one hand, the locking of the retention wire, and on the other hand, the separation of the two parts without impacting the retention wire. The shape of the device may, for example, incorporate one or more of the additional characteristics defined above.

[0087] The determination of the third element corresponds, for example, to a drawing of the first and second parts so as to show areas for receiving and retaining the retention wire, removable assembly means, and positioning means, as defined. The determination of the third element also includes, for example, the determination of the first face and / or the second face forming a negative of the teeth, based on the first element.

[0088] Preferably, the method also includes a step of assembling the device and the restraint wire after its manufacture, so as to be directly usable by the method according to the second aspect of the present invention.

[0089] In one implementation mode, obtaining the first data comprises the following phases: - receiving information representative of the dentition prior to orthodontic treatment; and - simulation of orthodontic treatment on the teeth, the first piece of data being obtained based on a result of the simulation.

[0090] Representative information of the dentition is obtained for example by scanning the dentition, in particular via imaging means.

[0091] According to another variant, the first data is obtained directly by a scan of the dentition, after orthodontic treatment, i.e. the corrected dentition.

[0092] The simulation of orthodontic treatment here corresponds to emulating tooth movement in order to give the dentition a desired shape, according to a plurality of criteria defined by the practitioner. The shape of the dentition after treatment thus depends on the dentition before treatment and the characteristics of that treatment, and does not correspond to a single shape.

[0093] In a further embodiment, obtaining the second data includes drawing the retaining wire on the teeth as a function of the first data.

[0094] The retention wire is thus drawn on the lingual surface of the dentition, for example, immediately after the orthodontic treatment simulation as described above. Optionally, a cross-section of the dentition is also provided along a substantially horizontal plane, with the retention wire being drawn in this plane. The drawing of the retention wire on the lingual surface of the dentition can be carried out by the practitioner or by a computer program configured to define the ideal shape and position of the retention wire on the lingual surface of the dentition.

[0095] According to another variant, obtaining the first data and / or the second data corresponds to receiving this data by communication with means external to the execution of the process.

[0096] In an additional implementation, the determination of the third data point comprises the following phases: - Reception of information representing a preliminary form of the device; - Virtual placement of the preliminary form on the teeth; and - determination of the third piece of data based on a result of the setup.

[0097] It is understood here that the determination of the third element includes the determination of elements of the device that are likely to rest on or collide with the teeth. The determination of the third element includes, for example, the determination of representative information for the first and second sets of receiving and retaining zones for the retention wire, such that these correctly lock the movement of the retention wire when the device is placed on the teeth, and of positioning means, so that the device correctly rests on the teeth. Other elements may also be determined, for example, the set of support portions.

[0098] The preliminary form of the device includes, for example, a set of elements independent of the shape of the teeth, for example, the two-piece design and the means for removable assembly.

[0099] According to a fourth aspect, the present invention relates to a computer program comprising instructions for implementing the steps of the process according to the third aspect of the present invention, when these instructions are executed by a processor.

[0100] According to a fifth aspect, the present invention relates to a computer-readable recording medium on which a computer program according to the fourth aspect of the invention is recorded.

[0101] On the one hand, the recording medium can be any entity or device capable of storing the program. For example, the medium can include a storage means, such as a ROM, a CD-ROM or a microelectronic circuit-type ROM, or a magnetic recording means or a hard disk drive.

[0102] On the other hand, this recording medium can also be a transmissible medium such as an electrical or optical signal, such a signal being able to be transmitted via an electrical or optical cable, by conventional or radio frequency, by self-directing laser beam, or by other means. The computer program according to the present invention can, in particular, be downloaded onto an Internet-type network.

[0103] Alternatively, the recording medium may be an integrated circuit in which the computer program is incorporated, the integrated circuit being adapted to execute or to be used in the execution of the process in question.

[0104] Thus, by the various functional and structural technical characteristics above, the Applicant proposes a device to aid in the bonding of a retention wire to a denture, and a method of bonding a retention wire to a denture, allowing to ensure a precise positioning of the retention wire without risk of deforming or damaging it. Description of the figures

[0105] Other features and advantages of the present invention will become apparent from the description of the particular and non-limiting embodiments of the present invention below, with reference to the attached Figures 1 to 10, in which

[0106] [Fig.1]

[0107] Fig. 1 schematically illustrates a first perspective view of a denture equipped with a device for assisting in the bonding of a retention wire according to a particular and non-limiting embodiment of the present invention;

[0108] [Fig.2]

[0109] [Fig.2] schematically illustrates a second perspective view of a toothing system equipped with a device conforming to [Fig.1];

[0110] [Fig.3]

[0111] [Fig.3] schematically illustrates a view along the vestibular face of a dentition equipped with a device conforming to [Fig.1];

[0112] [Fig.4]

[0113] [Fig.4] schematically illustrates a front view of a first part of a device conforming to [Fig.1];

[0114] [Fig.5]

[0115] [Fig.5] schematically illustrates a cross-sectional view of a toothing system equipped with a device conforming to [Fig.1];

[0116] [Fig.6]

[0117] [Fig.6] schematically illustrates a perspective view of a second part of a device conforming to [Fig.1];

[0118] [Fig.7]

[0119] [Fig.7] schematically illustrates a denture conforming to [Fig.1], on which a retainer wire is glued;

[0120] [Fig.8]

[0121] [Fig.8] illustrates a processor configured to implement a process for manufacturing a device conforming to [Fig.1];

[0122] [Fig.9]

[0123] [Fig.9] illustrates a flowchart of the different stages of a process for gluing a retaining wire conforming to [Fig.1];

[0124] [Fig. 10]

[0125] Fig. 10 illustrates a flowchart of the different stages of a manufacturing process for a device conforming to Fig. 1. Detailed description

[0126] A device for assisting in the bonding of a retainer wire, as well as a method for bonding a retainer wire using such a device and a method for manufacturing said device, will now be described in what follows with joint reference to Figures 1 to 10. The same elements are identified with the same reference signs throughout the description that follows.

[0127] As indicated in the preamble to the description, the placement of a retention wire is complex, as it requires positioning the wire according to a precise configuration corresponding exactly to the portion of the dentition for which the wire follows the profile, and any device assisting in this positioning must neither block the placement of glue points between the wire and the dentition, nor the removal of the same device once the wire has been glued.

[0128] One of the objectives of the present invention is to provide a device for assisting in the gluing of a retainer wire that is simple to use, allowing for precise gluing, and whose removal does not risk deforming, detaching or breaking the retainer wire.

[0129] This is made possible in the following example, which considers a device for assisting in the bonding of a retention wire on the lingual face of an upper dentition, from canine to canine.

[0130] It will be understood here that this example is not limiting and that the invention will find other applications for bonding retention wires in other configurations, in particular retention wires of different lengths, for example extending from one premolar to the other, or for bonding a retention wire to the lingual surface of a lower dentition. More generally, the invention can be applied for bonding a retention wire adapted to any portion of an arch or to a complete arch, whether medially or medially, and associated with a lower or upper dentition.

[0131] According to the example of figures 1 to 7, the device 1 for assisting in the bonding of a retaining wire 2 onto a tooth 3, developed within the framework of the present invention, comprises a first part 11 and a second part 12 assembled together by removable assembly means 112, 122.

[0132] As illustrated in Figures 1 to 4, the device 1 is configured to bear against the teeth 3, i.e., when using the device 1, the latter, In particular, the first part 11 is placed on the teeth 3. The device 1 thus includes positioning means 115, 125 configured to bear against the teeth 3. Advantageously, and according to the example in [Fig. 5], the positioning means 115, 125 include a first face 115, here a first upper face, formed on the first part 11 and at least partially forming a negative of the teeth 3. In other words, since the teeth 3 have an irregular profile composed of a plurality of teeth 31, the first face 115 is configured to be positioned on this teeth 3 and thus to reproduce the irregular profile of the teeth 3. The first face 115 is, for example, provided with a plurality of grooves or cavities reproducing the shape of the teeth 31. The first part 11 therefore bears against the teeth 3 via the first face 115, following the profile of teeth 31. Similarly, according to the example of [Fig.6], the positioning means 115, 125 also include a second face 125 formed on the second piece 12 and forming at least partially a negative of the denture 3. In this design, the second piece 12 is thus also supported on the denture 3, as illustrated in figures 1, 2 and 4. The first piece 11 as well as the second piece 12 are in particular dimensioned so as to avoid any contact with the gums, and more generally with the soft parts of the mouth in the vicinity of the denture 3, so as to avoid bleeding and discomfort related to wearing the device 1. .

[0133] Furthermore, the first part 11 extends substantially along a horizontal plane, that is, a plane parallel to the plane of the teeth 3. Just as the teeth 31 extend substantially orthogonally to the plane of the teeth 3, the first part 11 comprises a plurality of support portions 116, illustrated in Figures 3 and 4, extending orthogonally to the horizontal plane, in a direction opposite to the teeth 31. As illustrated in [Fig. 3], the support portions 116 also partially form a negative of the teeth 3, that is, their profile is adapted to follow the profile of the teeth 3. The first part 11 thus rests on the teeth 3 and is held in position, the first face 115 bearing against the teeth 3 and the support portions 116 forming lateral supports to prevent displacement or tilting of the first part 11.

[0134] In accordance with the underlying concept of the invention, the first part 11 also includes a first set of receiving and retaining zones 111 for the retention wire 2, in the form of grooves dimensioned to receive the retention wire 2. The retention wire 2 is thus held in position at least partially by the first set of receiving zones 111, as illustrated in Figures 1 and 2. The first set of receiving zones 111 is thus arranged to correspond to the position of the retention wire 2 on the teeth 3. Thus, if the first part 11 rests on the teeth 3, particularly at the teeth 31, the The first set of receiving zones 111 extends from the first piece, particularly towards the interior of the denture 3, so as to reach the position of the retention wire 2. This design also ensures that the first piece 11 does not hinder the placement of adhesive points outside the first set of receiving zones 111, the latter being offset from the rest of the first piece 11. The first set of receiving zones 111 is, for example, arranged according to support portions 116, particularly associated with the lingual face of the denture 3, which serve jointly to receive the retention wire 2 and to stabilize the first piece 11.

[0135] In this same example, the first part 11 has a substantially arched shape following the dentition 3 and has two ends 113, corresponding to the angular ends of the arch. The first set of receiving zones 111 here corresponds to two receiving zones arranged along the ends 113, and thus receiving extremity portions of the retention wire 2. Here, the first part 11 extends from canine to canine, the retention wire 2 being held on the dentition 3 by the first part 11 at the level of the canines. Such a design is suitable for a retention wire 2 extending from canine to canine as well as for a retention wire 2 extending from premolar to premolar.

[0136] Advantageously, and as illustrated in Figures 3 and 5, the first part is configured to be supported and removed from the toothing 3 by moving along a first axis Z, here a vertical axis, that is to say orthogonal to the horizontal planes described above. The first set of receiving zones 111 also allows the engagement and withdrawal of the retention wire 2 relative to the first part 11 along the first Z axis. The grooves of the first part 11 are thus open with respect to the first Z axis, i.e., they allow the insertion of the retention wire 2 along this first Z axis. Thus, once the retention wire 2 is bonded to the teeth 3, the first part 11 can be removed from the teeth 3 by moving it along the first Z axis, i.e., in this case, by lifting it, the retention wire 2 being simultaneously freed from the grooves, without deforming or damaging it.

[0137] In combination with the first part 11, a second part 12 and removable assembly means 112, 122 are thus provided between the first part 11 and the second part 12. As illustrated in [Fig. 6], the second part 12 comprises a second set of receiving and retaining zones 121 for the restraint wire 2, for example, a groove extending along the length of the second part 12. Advantageously, the removable assembly means 112, 122 are arranged between a central portion 114 of the first part 11 and the second part 12, i.e., the second part 12 is assembled with the central portion 114 of the first part 11. The second set of receiving zones 121 is thus arranged according to this central portion 114 when the two parts 11, 12 are assembled. In the example of figures 1, 2 and 4, the wire of Retention wire 2 is thus held at the ends via the first set of receiving zones 111 and in the center via the second set of receiving zones 121. Outside these zones, the retention wire 2 is free and can be bonded to the denture 3 without parts 11 and 12 obstructing access. In other words, the assembly between device 1, retention wire 2, and denture 3 creates a set of free zones; outside the two sets of receiving zones 111 and 121, retention wire 2 can be bonded to denture 3 at the level of these free zones.

[0138] As illustrated in figures 5 and 6, the removable assembly means 112, 122 comprise on the one hand a cavity 112, here provided on the first part 11 at the level of the central portion 114, on the other hand a protrusion 122, here disposed on the second part 12. The protrusion 122 and the cavity 112 have complementary shapes, that is to say they fit together, so as to achieve the assembly between the first part 11 and the second part 12.

[0139] In accordance with the description below, the cavity 112 and the protrusion 122 advantageously have a shape allowing for a dovetail joint, in particular a substantially or partially trapezoidal shape, or any other shape allowing sliding between the cavity 112 and the protrusion 122 along an axis, here the second axis X, and blocking the relative movement of the parts 11, 12 in any other direction. The cavity 112 thus forms a mortise and the protrusion 122 forms a tenon complementary to the mortise.

[0140] Once the parts 11,12 are assembled, the first set 111 and the second set 121 of receiving zones are configured to jointly block the movement of the retaining wire 2, i.e. the movements permitted by the first set of receiving zones 111 are blocked by the second set of receiving zones 121, and vice versa.

[0141] Here, the first set of receiving zones 111 corresponds to grooves open along the first Z axis ([Fig. 5]), and the second set of receiving zones 121 corresponds to a groove open along the second X axis (Figures 4 and 6). In other words, the first set 111 and the second set 121 of receiving zones allow the engagement and retraction of the retainer wire 2 respectively along the first Z axis and the second X axis, the first Z axis and the second X axis corresponding to two different directions, and the combined reception of the retainer wire 2 by the first set 111 and the second set 121 of receiving zones no longer allows movement of the retainer wire 2 in any direction, except by deformation of the wire 2. In particular, the first part 11 can no longer be removed without deforming the retainer wire 2 by the action of the second part 12.

[0142] Once the parts 11,12 are assembled together and placed on the denture 3, the retaining wire 2 is thus locked in position and can be glued without risk of moving.

[0143] Advantageously, the removable assembly means 112, 122 and the second set of receiving zones 121 are configured to allow movement of the second part 12 that simultaneously separates it from the first part 11 and the retaining wire 2. As stated previously, on the one hand, the assembly means 112, 122 allow the second part 12 to be assembled with the first part 11 along the second X-axis, and on the other hand, the second set of receiving zones 121 corresponds to an open groove along the second X-axis. Thus, a single movement of the second part 12 along the second X-axis separates the second part 12 from the first part 11 and releases the retaining wire 2 from the second set of receiving zones 121. The second part 12 therefore allows the device 1 to be locked or unlocked without deforming the retaining wire 2.

[0144] According to the example of Figures 1, 2 and 4, the device 1 further includes an opening 117 provided between the first part 11 and the second part 12, more precisely between the respective ends of the protrusion 122 and the cavity 112. The opening 117 is for example formed by the complementary shapes of the removable assembly means 112, 122, that is to say that the removable assembly means 112, 122 are configured so that the device 1 presents the opening 117 when the first part 11 and the second part 12 are assembled. In yet another example, the opening 117 is provided directly in the first part 11. As illustrated in [Fig.4], the opening 117 communicates between an external portion of the device 1 and the protrusion 122. Thus, when the first part 11 and the second part 12 are assembled, a tool can be inserted through the opening 117 to be placed against the protrusion 112.This design thus makes it easier to separate the second part 12, even in the case of a tight fit between the two parts 11, 12.

[0145] Thus, the present invention provides a device 1 for assisting in the bonding of a retention wire 2 onto a denture 3, making it easier to place the retention wire 2 and to ensure precise placement, without risk of damaging the retention wire 2 after its placement.

[0146] Such a bonding aid device 1 can be used in a method of bonding a retainer wire 2 to a denture 3, for example, method 5 in [Fig. 9]. Such a method is, for example, performed manually by a practitioner. Certain steps can alternatively be carried out, at least partially, by a system for bonding the retainer wire 2 or for assembling the device 1 and the retainer wire 2.

[0147] In a first step 51 of the bonding process for the retention wire 2, the practitioner obtains an assembly between the device 1 and the retention wire 2. Such an assembly corresponds, for example, to an assembly of the first part 11 with the second part 12, and thus of the retention wire 2 in the receiving areas 111, 121. The practitioner for example, it manipulates all of these elements in such a way as to assemble them from individual parts.

[0148] The assembly of the various parts can be carried out in a plurality of ways. Preferably, the retention wire 2 is first assembled with the second part 12, i.e., in the second set of receiving zones 121. The second part 12 is advantageously provided, for example, with a marker allowing the retention wire 12 to be centered. Thus, the middle of the retention wire 2 is ensured to be positioned in the middle of the denture 3. The second part 12 is then assembled with the first part 11, and the retention wire 2 is inserted into the first set of receiving zones 111.

[0149] According to another design, for example, the retaining wire 2 is assembled with the first part 11, and then the second part 12 is assembled with the retaining wire 2 and the first part 11, in particular by sliding along the second axis X. According to yet another design, the first part 11 and the second part 12 are assembled, and then the retaining wire 2 is deformed to be inserted into the receiving areas 111, 121, this being conceivable in particular when the retaining wire 2 has a shape memory allowing it to return to its position after deformation for insertion into said receiving areas 111, 121.

[0150] In a second step 52, the first part 11 is placed against the denture 3. The practitioner manipulates, for example, the first part 11, and by extension the second part 12 and the retention wire 2, so as to perform a translation along the first axis Z and place the first part on the denture 3. The shape of the first part 11 here ensures that the retention wire is correctly positioned with respect to the denture 3 when the first part 11 is placed against the denture 3.

[0151] In a third step 53, the retention wire 2 is bonded to the denture 3. The practitioner uses, for example, means for bonding the retention wire, such as bonding means integrated into the system described above or separate bonding means. Bonding here corresponds to the application of a plurality of adhesive dots between the retention wire 2 and the denture 3, in particular between the retention wire 2 and a plurality of teeth 31, along the retention wire 2. The adhesive dots can be arranged along the entire length of the retention wire 2, except for the receiving areas 111, 121, between the wire and each tooth of the denture 3.

[0152] Once the retention wire 2 is bonded to the denture 3, the second piece 12 is removed from the first piece 11 in a fourth step 54. The practitioner manipulates, for example, the second piece 12 so as to translate it along the second axis X, thus simultaneously separating it from the first piece 11 and the retention wire 2. The retention wire 2 is then no longer held by the second set of receiving areas 121. The practitioner may then optionally repeat the aforementioned third step, adding one or more dots of glue where the first piece 12 was located. the second piece 12, on the lingual face of the incisors located in the central part of the dentition 3.

[0153] Finally, in a fifth step 55, the first part 11 is withdrawn from the dentition 3, for example, by a movement opposite to that of the second step 52. A movement along the first axis X then also results in the withdrawal of the retention wire 2 from the first set of receiving areas 111. The retention wire 2 thus remains bonded to the dentition 3, without being subjected to any constraint from the first part 11 and the second part 12. The practitioner can then optionally repeat the aforementioned third step by adding one or more dots of adhesive where the first set of receiving areas 111 was located, on the lingual surface of the molars or canines of the dentition 3. Obviously, the addition of additional dots of adhesive can also be done in a single step following the withdrawal of the second part 12 and the first part 11, the retention wire 2 already being partially bonded due to the third step 53.

[0154] Such a process is, for example, part of another, larger process, for example, a process for manufacturing the retention wire 2 and / or a process for manufacturing the device 1, in particular process 6 of [Fig. 10]. Such a process is, for example, implemented by a device manufacturing system 1, which includes computer means configured to implement process 6. According to another example, such a process is implemented by the practitioner, in particular with the assistance of digital means for design and manufacturing.

[0155] As illustrated in [Fig. 8], such computing means are, for example, grouped into one or more electronic devices 4, for example a processor, a microprocessor, or a microcontroller. The elements of the electronic device 4, individually or in combination, can be integrated into a single integrated circuit, into several integrated circuits, and / or into discrete components. The electronic device 4 can be implemented in the form of electronic circuits and software (or computer) modules or a combination of electronic circuits and software modules.

[0156] The electronic device 4 comprises one (or more) processor(s) 41 configured to execute instructions for carrying out the steps of the process and / or for executing instructions from the software embedded in the electronic device 4. The processor may include integrated memory, an input / output interface, and various circuits known to those skilled in the art. The electronic device 4 further comprises at least one memory 40, corresponding, for example, to volatile and / or non-volatile memory, and / or includes a memory storage device which may include volatile and / or non-volatile memory. such as EEPROM, ROM, PROM, RAM, DRAM, SRAM, flash, magnetic or optical disk.

[0157] The computer code of the embedded software(s) including the instructions to be loaded and executed by the processor is for example stored on the memory 40 of the electronic device 4.

[0158] In a first step 61 of the manufacturing process of the device 1, a first data representative of the corrected dentition 3 and a second data representative of the retention wire 2 placed on the lingual face of the corrected dentition are obtained.

[0159] The electronic device 4 includes, for example, a beacon unit 42 configured to receive the first data and the second data, in particular by communication with a remote electronic device.

[0160] Optionally, the beacon unit 42 receives information representative of the dentition 3 before orthodontic treatment, i.e. of an "initial" form of the dentition 3. The electronic device 4, for example the processor 41, then performs a simulation of the orthodontic treatment on the dentition 3.

[0161] Alternatively, such a simulation is carried out by the practitioner, in particular via computer-aided design means. The first data is thus obtained as a function of a result of the simulation, that is to say that it corresponds to an "after treatment" form of the dentition 3, the simulation corresponding to a tooth movement representative of the orthodontic treatment.

[0162] The representative information of the dentition 3 before treatment is obtained for example by communication with imaging means 44, external to the electronic device 4, and performing a scan of the dentition 3. According to another variant, the first data is obtained by communication with the imaging means 44, corresponding then to a scan of the dentition after orthodontic treatment.

[0163] Additionally, the second piece of information is obtained, for example, by drawing the retention wire 2 on the dentition 3. The processor 41, or the practitioner, for example, draws the retention wire 2 so as to follow the dentition 3, according to the practitioner's criteria. Such a drawing is advantageously carried out in a given plane of the dentition 3, although it is also possible to design non-planar retention wires 2.

[0164] It is understood here that such a variant allows for the joint design of the retention wire 2 and the bonding aid device 1. Obviously, it is also possible for the retention wire 2, as well as the shape of the teeth 3, to be determined in advance of the manufacturing process. In this case, the first and second data points are obtained through direct communication.

[0165] In a second step 62 of the manufacturing process, a third data representative of a shape of the device 1 is determined as a function of the first data and the second data.

[0166] In other words, the device 1 is designed to complement the shape of the denture 3 and the retainer wire 2, so as to ensure that the device 1 is positioned correctly in the denture 3 and that the retainer wire 2 is correctly held.

[0167] The third piece of data allows us to characterize the shape of the device 1, that is to say the shape and position of all the elements described above.

[0168] Optionally, the second step 62 includes receiving information representing a preliminary shape of the device 1, virtually positioning the preliminary shape on the denture 3, and determining the third data point based on the result of the positioning. In other words, starting from an initial shape, which serves as a model for the device 1, the final shape of the device 1 is determined so as to adapt it to the denture 3, i.e., avoiding any collision and allowing precise positioning of the device 1, and by extension, of the retention wire 2. Similarly, the receiving zones 111, 121 of the retention wire 2 are, for example, determined based on this virtual positioning on the denture 3 with the retention wire 2 in position, for example, drawn on the denture 3 as stated above.

[0169] In a third step 63 of the manufacturing process, the device 1 is then manufactured according to the third input. The electronic device 4 includes, for example, a control circuit 43 configured to actuate manufacturing means 45 in communication with the electronic device 4. Such manufacturing means advantageously correspond to three-dimensional printing means.

[0170] The manufacturing process optionally includes a subsequent step of assembling the device 1 and the retaining wire 2, in particular so as to obtain the assembly between the device 1 and the retaining wire 2 as used in the first step 51 of the process of gluing the retaining wire 2.

[0171] Thus, it will be understood that the present invention provides a device for assisting in the bonding of a retention wire to a denture, as well as a bonding method using such a device and a method for manufacturing such a device. In particular, the bonding aid device makes it possible to bond the retention wire in a controlled manner and without risk of deforming, detaching, or breaking the retention wire once it has been bonded.

[0172] It should be noted that this detailed description relates to a particular embodiment of the present invention, but that in no way does this description limit the scope of the invention; on the contrary, Its objective is to remove any possible inaccuracies or misinterpretations of the claims that follow.

[0173] It should also be noted that the reference signs in parentheses in the following claims are in no way intended to be limiting; these signs are solely intended to improve the intelligibility and understanding of the following claims and the scope of protection sought.

Claims

Demands

1. Device (1) for assisting in the bonding of a retention wire (2) to a denture (3), said device (1) comprising: - a first part (11) comprising a first set of receiving (111) and retaining zones for said retention wire (2); - a second part (12) comprising a second set of receiving (121) and retaining zones for said retention wire (2); - removable assembly means (112, 122) between said first part (11) and said second part (12);and - positioning means (115, 125) configured to bear against said teeth (3), said positioning means (115, 125) being implemented on at least said first part (11), said first set (111) and said second set (121) of receiving and holding zones of said retention wire (2) being configured to jointly block the movement of said retention wire (2) when said first and second parts (11, 12) are assembled, said removable assembly means (112, 122) and said second set of receiving zones (121) being configured to allow a joint movement of dissociation of said second part (12) with respect to said first part (11) and of release of said retention wire (2) with respect to said second set of receiving zones (121).;

2. Device (1) according to claim 1, wherein said first part (11) has a substantially arched shape following said teeth (3) and defining two ends (113), said first set of receiving zones (111) comprising two receiving zones arranged along said ends (113).

3. Device (1) according to claim 1 or 2, wherein said removable assembly means (112, 122) are arranged between a central part (114) of said first part (11) and said second part (12), so that said second set of receiving areas (121) is arranged according to said central part (114) when said first part (11) and said second part (12) are assembled.

4. Device (1) according to any one of claims 1 to 3, wherein said positioning means (115, 125) comprise a first face (115) formed on said first part (11), said first face (115) forming at least partially a negative of said toothing (3), said first piece (11) being configured to bear on said toothing (3) via said first face (115).

5. Device (1) according to any one of claims 1 to 4, wherein said positioning means (115, 125) comprise a second face (125) formed on said second piece (12), said second face (125) forming at least partially a negative of said toothing (3), said second piece (12) being configured to bear against said toothing (3) via said second face (125).

6. Device (1) according to any one of claims 1 to 5, wherein said first part (11) extends substantially along a horizontal plane, said first part (11) comprising a set of support portions (116) extending orthogonally to said horizontal plane, so that said set of support portions (116) forms a set of support points of said first part (11) on said teeth (3).

7. Device (1) according to any one of claims 1 to 6, wherein said removable assembly means (112, 122) comprise a cavity (112) disposed according to one of said parts (11, 12) and a protrusion (122) disposed according to the other of said parts (11, 12), said protrusion (122) having a form complementary to said cavity (112) and being able to be inserted into and removed from said cavity (112).

8. Device (1) according to any one of claims 1 to 7, further comprising an opening (117) provided such that, when said first part (11) and said second part (12) are assembled, said opening (117) communicates between an external portion of said device (1) and said protrusion (122), said opening (117) allowing the passage of a tool for said dissociation of said second part (12).

9. Device (1) according to any one of claims 1 to 8, wherein said first part (11) is configured to be supported and withdrawn from said toothing (3) along a first axis (Z), said first set of receiving zones (111) allowing the engagement and withdrawal of said retaining wire (2) along said first axis (Z).

10. Device (1) according to any one of claims 1 to 9, wherein said removable assembly means (112, 122) allow the assembly of said second part (12) with said first part (11) according to a second axis (X), said second set of receiving zones (121) allowing the engagement and withdrawal of said retaining wire (2) along said second axis (X).

11. Device (1) according to any one of claims 1 to 10, wherein said first set of receiving zones (111) and said second set of receiving zones (121) permit the engagement and withdrawal of said retaining wire (2) in two different directions.

12. A method for bonding a retaining wire (2) to a tooth (3) using a device (1) according to any one of claims 1 to 11, said method comprising the following steps: - obtaining (51) an assembly between said device (1) and said retaining wire (2); - placing (52) at least said first part (11) against said tooth (3); - bonding (53) said retaining wire (2) to said tooth (3); - removing (54) said second part (12) from said first part (11) and removing said retaining wire (2) from said second set of receiving zones (121); and - removal (55) of said first piece (11) vis-à-vis said teeth (3) and removal of said retaining wire (2) vis-à-vis said first set of receiving areas (111).

13. A method for manufacturing a device (1) according to any one of claims 1 to 10, said method comprising the following steps: - obtaining (61) a first data representative of said dentition (3) corrected after orthodontic treatment and a second data representative of said retention wire (2) in position on said dentition (3) after orthodontic treatment; - determining (62) a third data representative of a shape of said device (1) as a function of said first data and said second data; and - manufacturing (63) said device (1) as a function of said third data.

14. A method according to claim 13, wherein said obtaining (61) of said first data comprises the following phases: - receiving information representative of said dentition (3) before orthodontic treatment; and - simulating said orthodontic treatment on said dentition (3), said first data being obtained based on a result of said simulation.

15. A method according to claim 13 or 14, wherein said obtaining (61) of said second data comprises a drawing of said retaining wire (2) on said teeth (3) as a function of said first data.

16. A method according to any one of claims 13 to 15, wherein said determination (62) of said third data comprises the following phases: - receiving information representative of a preliminary form of said device (1); - virtually placing said preliminary form on said teeth (3); and - determining said third data as a function of a result of said placement.

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