FR3058039A1 - ORTHODONTIC APPARATUS FOR TREATING MALOCCLUSIONS - Google Patents

Abstract

The present invention belongs to the technical field of orthodontic treatment devices and relates to an orthodontic appliance (100) for the treatment of malocclusions, capable of being applied to the maxilla of a patient, the appliance (100) comprising: - a palatal arch (101) having at least one opening (102) for the passage of a central screw and the anchoring in the maxilla and having two branches (103, 104) which follow the orientation of the cellular processes and which extend from other than a median direction (M) which passes through the central axis of the screw, - at least one sleeve (105, 106) intended to be arranged opposite the palatal face of the alveolar processes, each sleeve being intended housing a branch (103, 104) of said palatal arc (101), - at least one connecting means (107, 108) of each sheath (105, 106) to at least one tooth, - at least one spring means ( 109) each intended to exert a compressive force between a branch dud it bow and the sheath that houses it.

Description

® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number:

(to be used only for reproduction orders)

©) National registration number

058 039

60462

COURBEVOIE © Int Cl ⁸ : A 61 C 7/12 (2017.01)

PATENT INVENTION APPLICATION

A1

©) Date of filing: 27.10.16. © Applicant (s): GUEDON JONATHAN— FR. (© Priority: @ Inventor (s): GUEDON JONATHAN. ©) Date of public availability of the request: 04.05.18 Bulletin 18/18. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): GUEDON JONATHAN. related: ©) Extension request (s): (© Agent (s): LE GUEN & ASSOCIES Civil society professional.

ORTHODONTIC APPARATUS FOR TREATING MALOCCLUSIONS.

FR 3 058 039 - A1 (5 /) The present invention belongs to the technical field of orthodontic treatment devices and relates to an orthodontic appliance (100) for treating malocclusions, suitable for being applied to the maxilla of a patient, the apparatus (100) comprising:

- a palatine arch (101) comprising at least one opening (102) for the passage of a central screw and anchoring to the maxilla and having two branches (103, 104) which follow the orientation of the alveolar processes and which are extend on either side of a middle direction (M) which passes through the central axis of the screw,

at least one sheath (105, 106) provided to be placed facing the palatal face of the alveolar processes, each sheath being intended to accommodate a branch (103, 104) of said palatine arch (101),

- at least one connecting means (107, 108) of each sheath (105, 106) to at least one tooth,

- At least one spring means (109) each intended to exert a compressive force between a branch of said arc and the sheath which houses it.

PL. l / l

100

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The present invention belongs to the technical field of orthodontic treatment devices and relates to an orthodontic appliance for treating malocclusions.

Orthodontics is a specialty of dentistry, the aim of which is to correct dysmorphoses and malpositions of the jaws and / or teeth.

Malocclusion refers to a bad relationship between the teeth when the jaw is closed. There are three classes of malocclusion, depending on the type of anteroposterior shift between the teeth. Class 1 malocclusion mainly concerns too much spacing between the teeth, misalignment or overlapping of the teeth between them. In case of class 2 malocclusion, there is a projection in front of the anterior teeth as well as a bad relationship between the upper and lower molars. The class 3 malocclusion describes projections opposite to the previous class.

These three classes of malocclusions are likely, when left untreated, to cause problems such as chewing, phonation, muscle and joint disorders. In addition, aesthetics can be affected as much as premature dental wear can appear over time.

To correct malocclusions in indications where dental displacement is required, orthodontic appliances are used, the purpose of which is to generate forces on the tooth and its supporting tissue until a biological response to dental displacement is obtained. Many orthodontic devices exist with very variable levels of therapeutic effectiveness and sometimes significant complexity. In addition, some devices may be difficult for the patient to tolerate or for the practitioner to use.

An example is the BeneSlider which is a device designed to exert recoil of the molars. Such an apparatus comprises a palatine arch anchored at the front of the maxilla and having branches which extend on either side of the axis of symmetry of the arch in the direction of the molars, rings intended to be arranged around molars, as well as springs between two portions of each branch. Although effective, this device does not allow the positions of other teeth to be changed for which additional devices must be used.

One of the aims of the present invention is to propose an apparatus for the treatment of malocclusions of the jaw of classes 1, 2 and 3 which is simple of design and use for the practitioner and which makes it possible to limit the number of sessions at the practitioner's as well as their duration.

Another object of the invention is to provide such a device which is precise, effective, and capable of implementing, once installed in the mouth of the patient, a therapy determined beforehand by the practitioner, in an autonomous, progressive and continuous manner. in time.

To this end, the invention relates to an orthodontic appliance for treating malococci, capable of being applied to the maxilla of a patient, the appliance comprising:

- a palatine arch comprising at least one opening for the passage of a central screw and the anchoring of the arch to the maxilla and having two branches which follow the orientation of the alveolar processes and which extend on either side a middle direction which passes through the central axis of the screw, at least one sheath provided to be placed facing the palatal face of the alveolar processes, each sheath being intended to accommodate a branch of said palatine arch, at least one means connecting each sheath to at least one tooth, at least one spring means provided for exerting a compressive force between a branch of said arc and the sheath which houses it.

According to one embodiment of the invention, the means for connecting each sheath to at least one tooth comprises at least one cable, designed to be fixed on the one hand to the sheath and, on the other hand, to at least one tooth .

Preferably, the apparatus comprises a means of hooking the connection means on a tooth, this hooking means being composed of a housing intended to be glued to the lingual face of the tooth and comprising a groove for housing said means of liaison.

Advantageously, each housing comprises means for holding said cable in place in said groove, said means being fixed, mobile or removable.

According to one embodiment, the device comprises two sleeves, each accommodating a branch of said palatine arch.

According to one embodiment, Tare palatine presents at least two other openings for the passage of screws and anchoring in the maxilla, each arranged at the top of Tare palatine on either side of its median direction.

Advantageously, Palate Tare comprises one or more means for attaching one or more of said connecting means, including a means for attaching situated at the top of Palate Tare below or above the opening made for the passage of the central screw.

Preferably, the device includes visual indications indicating the path traveled by each sheath relative to the branch it houses.

Thus, advantageously, each sheath is provided with a window opening onto a portion of the end of the branch which it houses, said portion having metric or colored indications. According to one embodiment, the branch is only partially masked by the part of the sheath which houses it, thus leaving visible the visual indications.

Advantageously, Tare palatine has on either side of its central direction two portions, each projecting from a branch in the direction of the occlusion plane.

According to one embodiment, at least one of said connecting means extends from one of the sleeves to the other.

According to another embodiment, at least one of said connecting means extends from one of the sheaths to the attachment means located at the top of the palate tare, bypassing the portion projecting from the branch that houses the same scabbard.

According to another embodiment, at least one of said connecting means extends from one of the sleeves to the means for hooking at least one tooth situated on the same side, relative to the central direction, as said sheath, bypassing the portion projecting from the branch that this sheath accommodates.

According to one embodiment, the branches of Palatine Tare form a different angle with respect to a horizontal median plane of Palatine Tare which passes through the center of the screw.

The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which:

Fig. 1 represents a view from below of an apparatus according to a first embodiment,

Fig. 2 represents a profile view of a means of connecting the apparatus according to the invention to a tooth,

Fig. 3 represents a view from below of an apparatus according to a second embodiment,

In the following description, the terms relating to a position or a direction are taken with reference to a device installed in the mouth of a patient.

In connection with FIG. 1 is thus shown an orthodontic appliance 100 for treating maloccusions, capable of being applied to the maxilla of a patient, the appliance 100 comprising:

a palatine arch 101 comprising at least one opening 102 for the passage of a central screw or mini screw and anchoring to the maxilla of the arch 101, and having two branches 103, 104 which follow the orientation of the alveolar processes and which extend on either side of a middle direction M which passes through the central axis of the screw, the branches being in this embodiment generally symmetrical with respect to the middle direction M, each of the branches being provided to be placed opposite the palatal face of the lateral alveolar processes of one half of the dental arch of the maxilla, at least one sheath 105, 106 provided to be placed opposite the palatal face of the alveolar processes at the level of a portion of the dental arch which, in this embodiment includes at least one molar or premolar, the sheaths 105, 106 being intended to respectively accommodate the branches 103, 104 of the palatal arch 101,

- at least one connecting means 107, 108 of each sheath 105, 106 to at least one tooth of the dental arch of the maxilla,

- at least one spring means, such as the means 109, constrained between a branch of the arc 103 and the sheath 105 which houses it.

In Fig. 1, only the teeth on one side of the median M are shown.

The palatal arch 101 is thus temporarily fixed to the patient's maxilla on the side of the posterior face, or palatal face, of the teeth, by means of a central screw or mini-screw passing through the opening 102 at the level of the anterior part of the maxilla, that is, posterior to the emergence of the nasopalatine canal and along the median palatal suture. The fixation is carried out globally at the axis of symmetry of the patient's jaw. The branches 103, 104 of the palatine arch 101 extend respectively in an anteroposterior direction on either side of the median direction M, following the orientation of the alveolar processes. The middle direction is coincident with the central axis of the opening 102. The top of the arch 101 is thus opposite the incisors and the branches 103, 104 of the arch opposite the canines, premolars and possibly molars.

A portion of the end of each of the branches 103, 104 is housed inside a sheath 105, 106, at the distal part of the maxilla, that is to say near the patient's molars and premolars. Each sheath 105, 106 is connected to one or more teeth via the connection means 107, 108. In addition, the sheaths 105, 106 are able to be moved in translation relative to the branch 103, 104 that they house in an antero posterior direction AP.

To do this, spring means are constrained between, on the one hand, the branches of the bow and, on the other hand, the sleeves housing the branches, as illustrated in FIG. 1 in connection with one of the sides of the arch 101, relative to the median M. Thus, the compression of the spring means 109 exerts a displacement force on the tooth or teeth to which the sheath 105 is connected by the intermediate of the connecting means 107. The compression can be exerted in particular by means of stops 110, 111 that the branch 103 and the sleeve 105 which house it respectively have.

The connecting means 107, 108 of the sheaths 105, 106 to one or more teeth are composed of cables, which are fixed at one end to hooking means 112, 113 arranged on arms which are offset from the sheaths 105, 106 as far as the distal of the overlying tooth, respectively, and by their other end to a hooking means 114 arranged on the palatine arch 101, at the top thereof and near the opening 102 or at the top of two portions 124, 125 presented by the palatine arch 101. In addition, such a hooking means 111, 112, 114 can be a hook or any other suitable means.

The attachment means 112, 113 can, as a variant, be arranged directly on the sleeves 105, 106, respectively. They can also be produced on the palatal face of the sheath 105, 106 more or less gingival or occlusal as necessary.

The cables 107, 108 are, moreover, fixed to the teeth concerned by the treatment, as at the points represented in FIG. 1, by connecting means.

As such, a connection means 115 to a tooth is shown in more detail in FIG. 2. This consists of a housing 116 which is intended to be glued to the lingual face of the tooth and which has a groove 117 for accommodating a cable, for example 107. The insertion into the groove 117 is effected by force and the cable 107 is held in the groove by any suitable means which can be fixed, mobile or removable. In the embodiment shown in FIG. 2, the housing 116 has an upper portion 116a and a lower portion 116b, the upper portion 116a being partially superimposed on the lower portion 116b without, however, the two portions being in contact. As a result, the space between the two portions provides an access path to the groove 117 housing the cable 107.

The housing 116 may, in addition, include a second groove 118 for housing an additional wire or cable provided for connecting the teeth together as part of a treatment complementary to that induced by the device 101.

The device 101 can be used to reposition several teeth, a housing 116 is then provided on each of the teeth concerned. In this case, the device applies a force to each of these teeth via the same cable 107 or, in a variant, different cables. When the practitioner wishes that forces be applied to several teeth, but at different periods, several cables can be used and put in place at these different periods or simultaneously.

The cables 107, 108 further comprise means for adjusting the voltages materialized by stops 119 along the cable. The stops 119 are arranged upstream or downstream of each housing in the anteroposterior or posterior-anterior direction.

Depending on the treatment to be applied, the device 101 comprises two sheaths 105, 106, each housing a branch 103, 104 or a single sheath.

The latter case, in fact, relates to situations in which only one side of the maxilla is affected by the treatment.

In order to guarantee or reinforce the anchoring of the palatine arch 101 to the maxilla, at least two other openings 120, 121 for the passage of mini screws are provided on the palatine arch 101. Each is arranged near the opening 102 for the central screw, at the top of the palatal arch and on either side of the middle direction M.

As can be seen in FIG. 1, each sheath 105, 106 is provided with a window 122 opening onto a portion of the end of the branch 103, 104 which it accommodates in order to make visible visual indications 123, metric or colored. These visual indications 123 allow the practitioner to visualize during the treatment the path already traveled by each sheath relative to the branch that it accommodates, and the amount of activation of the spring system.

The palatine arch 101 has two portions 124, 125 on either side of its central direction M, each projecting from a branch 103, 104, respectively, in the direction of the occlusion plane. These portions 124, 125 are provided to be bypassed by the cables 107 and 108 and serve as their support.

In the embodiment illustrated in connection with FIG. 1, on one side of the middle direction M, the apparatus 100 comprises a cable 107 which extends from the attachment means 114 situated at the top of the palatine arch 101 to the attachment means 112 of the sheath 105 by bypassing the portion 124 projecting from the branch 103 in order to be fixed by means of attachment 112.

The cable 107 is housed in housings which have the teeth concerned by the treatment, for example, the canine C, the premolars PI and P2 and the molars Ml, M2. The sheath 105 is therefore itself connected to these teeth. The spring 109 in compression then exerts a force on the sheath 105 which is transmitted to the teeth via the cable 107. The palatal arch 101 being fixed to the maxilla, the compression exerted on the spring produces a recoil force in the direction AP on the sheath 105 and therefore on the teeth.

In the embodiment illustrated in FIG. 1, the treatment is symmetrical on either side of the median M so that the canine, the premolar and the last two molars are connected to the sheath 00 by the cable

108.

In a variant of the invention illustrated in connection with FIG. 3, the treatment is not identical on either side of the median M. In fact, on the right side of the median, the cable 107 is connected to the same teeth as in the embodiment of FIG. 1. On the other hand, on the left side of the median M, the cable 108 extends from the sheath 106 to the hooking means 115 of a molar Ml on the same side of the median direction. The cable 108 completely bypasses the portion 125 projecting from the branch 104 that houses the sheath 106, which here serves to direct the cable in the anteroposterior direction. The compression exerted on the spring 109 produces a recoil force AP on the sheath 104. On the other hand, the cable 108 bypassing the portion 125, the force exerted on the molar Ml takes a posterior anterior direction PA resulting in displacement of the molar in this direction, towards the front of the maxilla.

The apparatus 100 according to the invention can therefore be used so as to carry out different orthodontic treatments in a combined manner, with different goals: the displacement of one or more teeth at the same time or spread out over time, in a postero-anterior or anteroposterior direction.

The apparatus 100 according to the invention is adaptable to the morphology of the patient. Indeed, the branches 103, 104 of the palatine arch 101 may be such that they respectively form a different angle with respect to a horizontal median plane of the palatine arch 101 which passes through the axis of the screw or mini screw central housed in the opening 102. In addition, the attachment means 112, 113 and 124, 125 can be individualized in their orientation and position according to the morphology and the therapeutic objectives.

The treatment is advantageously defined in advance, before the appetizer, by the practitioner, for example using software. It is therefore possible to define in advance all the paths that the teeth must undergo. Once the device according to the invention is placed in the mouth, the intervention of the practitioner is limited.

Claims (13)

1) Orthodontic appliance (100) for treating malococcus, able to be applied to the maxilla of a patient, the appliance comprising: - a palatine arch (101) comprising at least one opening (102) for the passage of a central screw and anchoring to the maxilla and having two branches (103, 104) which follow the orientation of the alveolar processes and which are extend on either side of a middle direction (M) which passes through the central axis of the screw, at least one sheath (105, 106) intended to be placed opposite the palatal face of the alveolar processes, each sheath being intended to accommodate a branch (103, 104) of said palatine arch (101), - at least one connecting means (107, 108) of each sheath (105, 106) to at least one tooth, - At least one spring means (109) each intended to exert a compressive force between a branch of said arc and the sheath which houses it. 2) Apparatus (100) according to claim 1, characterized in that the connecting means (107, 108) of each sleeve (105, 106) to at least one tooth (C, PI, P2, M) comprises at least one cable, intended to be fixed on the one hand to the sheath (105, 106) and, on the other hand, to at least one tooth as well as to Palate tare (101). 3) Apparatus (100) according to claim 1 or 2, characterized in that it comprises a hooking means (115) of said connecting means (107, 108) to a tooth (C, PI, P2, M), this attachment means (115) being composed of a housing (116) intended to be glued to the lingual face of the tooth and comprising a groove (117) for housing said connecting means (107, 108). 4) Apparatus (100) according to claim 3, characterized in that each housing (116) comprises means for holding in place said connecting means (107, 108) in said groove (116), said means being fixed, movable or removable. 5) Apparatus (100) according to one of the preceding claims, characterized in that it comprises two sleeves (105, 106), each accommodating a branch (103, 104) of said palatine arch (101). 6) Apparatus (100) according to one of the preceding claims, characterized in that the palate Tare (101) has at least two other openings (120, 121) for the passage of the screw and the anchoring to the maxilla, each arranged at the top of Tare palatine 101) on either side of its median direction (M). 7) Apparatus (100) according to one of the preceding claims, characterized in that the palate tare (101) comprises one or more means of attachment of the connecting means or (107, 108), including a means of attachment (114) located at the top of the palate Tare (101) below or above the opening (102) made for the passage of the central screw. 8) Apparatus (100) according to one of the preceding claims, characterized in that each sheath (105, 106) is provided with a window (122) opening onto a portion of the end of the branch (103, 104) that it houses, said portion having metric or colored visual indications (123) indicating the path traveled by each sheath (105, 106) relative to the branch (103, 104) that it houses. 9) Apparatus (100) according to one of the preceding claims, characterized in that the Palate Tare (101) has on either side of its median direction (M) two portions (124, 125), each projecting from a branch ( 103, 104) towards the occlusion plane. 10) Apparatus (100) according to one of the preceding claims, characterized in that at least one of said connecting means (107, 108) extends from one of the sleeves (105) to the other (106) . 11) Apparatus (100) according to one of claims 7 to 11, characterized in that at least one of said connecting means (107) extends from one of the sleeves (105) to the hooking means (114 ) located at the top of the palate Tare (101), bypassing the portion (124) projecting from the branch (103) that houses the same sheath (106). 12) Apparatus (100) according to one of claims 10 to 12, characterized in that at least one of said connecting means (108) extends from one of the sleeves (106) to the hooking means (115 ) at least one tooth (M) located on the same side, relative to the median direction (M), as said sheath (106), bypassing the portion (125) projecting from the branch (104) that houses this scabbard (106). 13) Apparatus (100) according to one of the preceding claims, characterized in that the branches (103,104) of Palatal Tare (101) form a different angle relative to a horizontal median plane of the palatine arch (101) which passes through the 'axis of the central screw (102). PL. 1/1