EP3914186A1 - Dispositif de contention comportant un appareil de contention et des cavaliers de positionnement, et procédé de réalisation d'un tel dispositif de contention - Google Patents
Dispositif de contention comportant un appareil de contention et des cavaliers de positionnement, et procédé de réalisation d'un tel dispositif de contentionInfo
- Publication number
- EP3914186A1 EP3914186A1 EP20705237.4A EP20705237A EP3914186A1 EP 3914186 A1 EP3914186 A1 EP 3914186A1 EP 20705237 A EP20705237 A EP 20705237A EP 3914186 A1 EP3914186 A1 EP 3914186A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- restraint device
- dental arch
- restraint
- retention
- teeth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/007—Dental splints; teeth or jaw immobilisation devices; stabilizing retainers bonded to teeth after orthodontic treatments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/08—Mouthpiece-type retainers or positioners, e.g. for both the lower and upper arch
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0022—Blanks or green, unfinished dental restoration parts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/002—Orthodontic computer assisted systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
Definitions
- Restraint device comprising a restraint device and positioning riders, and method of making such a restraint device
- the present invention relates to a restraint device comprising a restraint device, as well as to a method of making such a restraint device.
- an active treatment plan that is to say to correct a bad posture of the teeth, for a functional or aesthetic purpose, is established using various means, for example such as than :
- This restraint device can also be fixed or removable.
- the wearing time is a minimum of one year. Sometimes it is necessary to keep it for 5 years, 10 years or for life. In this case, it is for example a simple palatal plate, or a Hawley's plate, or activators, or gutters, that is to say a kind of mouthguard which can be made of soft resin or transparent polymer for example.
- it may be, for example, a twisted metal wire bonded directly to each of the teeth that it covers, or a metal wire bonded to two metal facets which are themselves bonded directly to two teeth, for example the canines, or a lingual arch on a bar, that is to say a metal wire directly welded to the canine or premolar rings.
- the metal wires can scratch the teeth and / or induce cavities and / or the risk of cracking, affecting their resilience.
- the object of the present invention is to improve at least in part the aforementioned drawbacks, further leading to other advantages.
- a retention device comprising at least one retention device configured to be bonded to a part of a dental arch.
- the restraint device further comprises at least two riders, positioned at a distance from each other, each rider being a rigid hook and integral with the restraint device, and configured to hook onto the dental arch.
- Such a “fixed” type restraint device (because it will then be fixed in the mouth of the individual), produced beforehand, is thus very easy to put in place in order to then be glued to the teeth of an individual, it is that is to say on a part of the dental arch.
- the presence of at least two riders allows precise positioning of the retainer on the dental arch portion before bonding the retainer to the corresponding teeth.
- Such a restraint device is thus very simple and makes it possible to avoid using other tools or elements for the placement of the restraint device.
- the relative flexibility of the material of the restraint device makes it possible in particular to achieve a one-piece restraint, for example from premolar to premolar, which would be impossible to achieve in metal because such a restraint device would then induce too many constraints on the teeth.
- a retention device is also very discreet, even invisible, and it is both sufficiently rigid so as to clamp the teeth but with relative flexibility, which makes it possible in particular to make it much less traumatic for the teeth or the tissues. and / or less restrictive for its wearer.
- the restraint device has an average thickness of at least 0.3 mm, for example between 0.5 mm and 0.9 mm, for example about 0.8 mm.
- the thickness of the restraint device is for example at most equal to 3 mm and at least equal to 0.3 mm.
- the restraint device here is preferably a tape.
- a strip here denotes a bar of which one dimension, for example a thickness e, among a height h, a length L and a thickness e of the apparatus, is much less than the two other dimensions, for example the length L and the height h.
- the length L corresponds to the dimension of the appliance according to the dental arch and corresponds for example to the number of teeth covered by the appliance while the height h corresponds to a transverse dimension along a height of one tooth.
- a thickness e thus corresponds to the third dimension.
- an apparatus in the form of a wire would have a height substantially equal to its thickness.
- the height h is also much greater than the thickness e.
- the retainer is thus configured to cover a larger area of each tooth depending on its height, which allows a more stable hold of the tooth.
- the restraint device has a shape corresponding to a set of the rear faces, also called posterior, of the teeth of the portion of the dental arch that it is configured to cover.
- the retainer is configured to cover 2, or 4, or 6, or even 8 teeth, or even more, depending on the case; This involves, for example, covering an area from one canine to another canine, or from one premolar to the other premolar, with the same dental arch.
- the retention device includes at least two riders to ensure stability of the retention device positioned on the dental arch.
- the restraint may however have three or more riders.
- each rider extends as far as possible up to halfway up the restraint device. Such a length of the riders makes it possible to facilitate the subsequent positioning of the retention device on a dental arch.
- At least one of the jumpers is configured to anchor on an interface between two consecutive teeth.
- one of the three riders can be located between the two middle incisors and the two other riders can be located between a lateral incisor and the neighboring canine.
- Such positioning of the riders helps to ensure a more stable balance of the retainer positioned on a dental arch.
- the restraint device comprises at least one breakable rupture initiator located at an intersection between one of the riders and the restraint device in order to facilitate removal of the rider.
- Such a breakable rupture initiator is for example a notch and / or a section narrowing of the jumper.
- At least the restraint device is made of a composite polymer material.
- the composite polymeric material includes a cross-linking amorphous composite polymeric material.
- the composite polymer material comprises an amorphous composite polymer material cross-linked with a methacrylate base.
- the methacrylate here is a mixture of liquid monomers, the crosslinking of which is initiated by a peroxide. Curing of the mixture of monomers, depending on the level of peroxide, takes place either at room temperature or at low temperature, or even at negative temperature.
- Crosslinked mixtures are characterized in particular by:
- An interesting material is, for example, the material sold under the reference Bredent HIPC® (High Impact Polymer Composite).
- nextDent C&B the material sold under the reference “NextDent C&B” ® or the material sold under the reference “NextDent C&B MFH (Micro Filled Hybrid) »®, both from Nextdent®.
- the method comprises a step of machining a wafer of material configured to produce at least part of the retention device.
- the machining is carried out in a wafer of amorphous composite polymer material, with cross-linking, as described above.
- amorphous composite polymer material is for example marketed under the reference Bredent HIPC® (High Impact Polymer Composite)).
- the machining is carried out with a so-called "laboratory" machine, such as for example sold under the name Roland DWX 510® or even IMES-ICORE CORITEC 350i®.
- the method comprises a step of three-dimensional printing of at least part of the retention device.
- Machining and three-dimensional printing can be combined depending on the shape to be given to the retention device, for example.
- the method comprises a step of taking an impression of at least part of a dental arch of an individual. At least one digital file allowing 3D modeling is then obtained.
- the impression-taking step involves taking a physical impression of at least part of an individual's dental arch to obtain a mold.
- the method can then include a step of casting plaster in the mold to obtain a plaster model of the part of the arch, also called a matrix.
- the impression-taking step may include a step of digital scanning of the matrix.
- the digital file is for example extracted by means of a three-dimensional scan for example (for example of the Imetrics® type).
- the impression-taking step comprises a step of taking an impression of at least part of a dental arch of an individual directly in the mouth using an intraoral scan, for example. by a CONDOR® camera.
- the matrix representing at least part of the dental arch is also possibly produced by 3D printing.
- the matrix can be printed in resin, for example with a Stratasys Eden 50® printer.
- the 3D file of the impression of the dental arch part thus obtained (following the scan of a matrix or directly in the mouth), i.e. the digital model of the dental arch part , is included in software (such as for example Dental-Wings®).
- the orientation of the arch is possibly optimized to reduce undercuts on the buccal surfaces of the teeth relative to a theoretical vertical axis; in other words, this operation makes it possible to "open" the internal face of the teeth, in particular where a restraint device according to an exemplary implementation of the invention will be positioned.
- the method can then include a step of modeling the restraint device; this step thus provides a digital model of the restraint device.
- the method comprises for example a step of modeling the restraint device as described above as a function of the digital model of the dental arch part, the step thus providing a digital model of the restraint device.
- the step of modeling the restraint apparatus comprises a step of identifying the geometries of the posterior surfaces of the teeth, that is to say on the side of the tongue, on which the restraint apparatus is to to place.
- the step of modeling the restraint apparatus includes a step of defining a thickness of the restraint apparatus.
- This thickness can however vary according to the needs.
- the method comprises, for example, a step of modeling the riders, as a function of the digital model of the dental arch part and of the digital model of the restraint device.
- the retention device can then be produced.
- a CAD file for example a file in STL format, presenting at least one model of the restraint device as described above, and preferably several, is transferred, for example to a machining preparation software, for example Work-NC® software, and / or three-dimensional printing.
- An orientation of the restraint model is possibly made so as to provide the lingual or palatal face without an undercut relative to an axis of attack of a bur.
- Such an embodiment is advantageous because there is thus no discontinuity in the geometry of the restraint device which can be machined, or printed, in a single stroke, for example without turning over the wafer of material in which the machining is carried out.
- the method may include a step of adjusting the jumpers by positioning the retention device on the matrix.
- the method further comprises a step of polishing the retention device thus obtained.
- the polishing step may for example include a step of sanding a face of the restraint device configured to be bonded to the teeth in order to increase the roughness of this face and therefore the adhesion of the device to the teeth. .
- the method further comprises a step of cleaning the restraint device.
- the cleaning step is, for example, carried out by an ultrasonic bath.
- An interesting glue is, for example, an adhesive marketed under the name “Panavia V5 KURARAY”.
- the glue is then photopolymerized.
- the removal of the riders can be done by a simple snap action or, for example, by milling, directly in the mouth of the individual.
- the material can have different shades which allow it to best match that of the teeth of the individual for whom the retainer is intended.
- Such a retainer is thus much more aesthetic, resistant and comfortable and adapts much better to a dental arch.
- Figure 1 shows a digital model of a dental arch
- FIG. 2 illustrates an extraction of the geometries of the posterior faces of the teeth on which a retainer is to be placed
- FIG. 3 represents a digital modeling of a restraint device according to an exemplary embodiment of the invention
- FIG. 4 schematically represents a positioning of the riders on a dental arch
- FIG. 5 illustrates an exemplary embodiment of a restraint device according to the invention, comprising a restraint device and three riders;
- Figure 6 illustrates a front view of the restraint device of Figure 5;
- FIG. 7 shows an example of positioning of the retention device of FIG. 5 on a dental arch
- Figure 8 illustrates, in section view, a placement of the restraint device for positioning as illustrated in Figure 7;
- Figure 9 shows a sectional view of Figure 7.
- Figure 10 schematically illustrates the retention device from the retention device shown in Figure 5 on a dental arch as shown in Figure 7.
- FIG. 1 represents a digital, three-dimensional model of the dental arch 10 '.
- a digital, three-dimensional model of the dental arch 10 ′ is for example produced from an intra-oral scan, for example using a CONDOR® camera.
- the digital file of the impression thus obtained is possibly used in software, for example Dental-Wings® software.
- a model of a restraint device 20 can then be carried out.
- a step of modeling the restraint apparatus includes a step of identifying the geometries of the posterior surfaces of the teeth on which the restraint apparatus is to be placed.
- this step is represented by the definition of the surface 20 ”, hatched, which is used to define an outline of the restraint device.
- the method then includes a step of defining the thickness of the restraint device.
- the average thickness is for example between 0.5 mm and 0.9 mm, and at all points, the thickness is preferably at least equal to 0.3 mm and at most equal to 3 mm.
- the thickness e being considered very small compared to a height h (defined according to the height of the teeth) and a length L (defined according to the number of teeth covered by the restraint device) of the restraint device, the a restraint device is here considered to be a tape.
- the retainer is here configured to cover 6 teeth; This involves, for example, covering a sector from one canine to another canine with the same dental arch, as illustrated in Figures 2 to 7.
- the step of modeling the restraint device also includes a step of modeling the jumpers, shown for example in Figure 3.
- the device has three jumpers.
- the jumpers are modeled to be positioned at an interface between two consecutive teeth.
- two jumpers are arranged between an incisor and the neighboring canine, and a jumper is positioned between the two middle incisors.
- the geometry of the riders is adapted and modeled on those of the teeth so as to generate only intimate contact.
- the restraint device to be able to apply perfectly to the faces of the teeth and to be able to control their passivity.
- each rider preferably extends as far as possible to the equator of the outer face of the teeth to facilitate positioning of the device on a dental arch.
- the length of the jumpers is configured to ensure sufficient stability for the restraint device and to prevent a tilting phenomenon.
- the length of a rider is generally sufficient when it comes to half the height of the restraint.
- the jumpers are configured so that a retention force allows intimate contact between the retention device and the dental arch so as not to generate a tilting phenomenon, ie the jumpers are preferably not under stress on the teeth. teeth so as not to induce a force which would interfere with the positioning of the device and a bonding of the retention device on the rear faces of the teeth.
- the method further includes a step of defining a breakable initiator at an intersection between one of the jumpers, preferably each of the jumpers, and the restraining device to facilitate subsequent removal of the jumper.
- Such a breakable rupture initiator is for example a notch and / or a section narrowing of the jumper.
- FIG. 3 represents a digital model of a restraint device 20 'according to an exemplary embodiment of the invention, comprising a digital model of a restraint device 21' and a digital model of jumpers 22 '(three in number) .
- Figures 5 and 6 show by way of illustration a restraint device 20 obtained from the digital model of a restraint device 20 ′ of Figure 3 for example.
- the restraint device 20 comprises a restraint device 21 and riders 22, here three riders.
- a CAD file for example a file in STL format, presenting at least one retention device 20, and preferably several, is transferred, for example machining preparation software, for example Work-NC® software, and / or three-dimensional printing software.
- Production by machining and / or three-dimensional printing is advantageous because there may thus be no discontinuity in the geometry of the restraint device and even of the restraint device.
- the machining is carried out in a wafer of amorphous composite polymer material, with cross-crosslinking.
- amorphous composite polymer material is for example marketed under the reference Bredent HIPC® (High Impact Polymer Composite)).
- the machining is carried out with a so-called “laboratory” machine, such as for example marketed under the name Roland DWX 510® or even IMES-ICORE CORITEC 350i®.
- the restraint apparatus 20 can also be at least partly produced by three-dimensional printing.
- each retention device being specific for a different dental arch.
- the retention apparatus 20 thus produced is then polished and cleaned.
- the positioning of the retention device 20 is typically done vertically, as illustrated in FIG. 8, without forcing, without deformation of the retention device, taking into account a natural undercut of the part of the dental arch considered. , on the buccal and palatal or lingual surface.
- glue is applied to the teeth and / or to the anterior face of the retainer 21.
- Such an adhesive is for example marketed under the name Panavia V5 KURARAY®.
- the glue is then photopolymerized.
- jumpers for example by a simple snap action or for example by milling, directly in the mouth of the individual.
- Figure 10 shows the restraint device 21, in place on a dental arch 10, which then corresponds to the digital dental arch 10 'model illustrated in Figures 1 to 4.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Dentistry (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1900592A FR3091817B1 (fr) | 2019-01-23 | 2019-01-23 | Dispositif de contention comportant un appareil de contention et des cavaliers de positionnement, et procédé de réalisation d’un tel dispositif de contention |
PCT/FR2020/050087 WO2020152421A1 (fr) | 2019-01-23 | 2020-01-22 | Dispositif de contention comportant un appareil de contention et des cavaliers de positionnement, et procédé de réalisation d'un tel dispositif de contention |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3914186A1 true EP3914186A1 (fr) | 2021-12-01 |
Family
ID=67185218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20705237.4A Withdrawn EP3914186A1 (fr) | 2019-01-23 | 2020-01-22 | Dispositif de contention comportant un appareil de contention et des cavaliers de positionnement, et procédé de réalisation d'un tel dispositif de contention |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220087779A1 (fr) |
EP (1) | EP3914186A1 (fr) |
FR (1) | FR3091817B1 (fr) |
WO (1) | WO2020152421A1 (fr) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2086730B (en) * | 1980-09-25 | 1985-04-03 | Ewesplint Ltd | Method of stabilising animal teeth and splint therefor |
US9662182B2 (en) * | 2010-08-02 | 2017-05-30 | Thomas Williams | Dental splint device and methods for making and using same |
CN101991465B (zh) * | 2010-09-10 | 2012-09-26 | 广州瑞通生物科技有限公司 | 定位托盘的制造方法及制造该定位托盘的带定位钩托槽 |
US10028804B2 (en) * | 2015-06-01 | 2018-07-24 | Orthodontec Inc. | System for producing a one-piece orthodontic jig and attachments |
DE102016109007A1 (de) * | 2016-05-17 | 2017-11-23 | Yong-min Jo | Retainer sowie Verfahren zu dessen Herstellung |
CN107837121A (zh) * | 2017-12-22 | 2018-03-27 | 云艺生物科技(长春)有限公司 | 一种定制式舌侧固定保持器及其制作方法 |
EP3581143A1 (fr) * | 2018-06-12 | 2019-12-18 | 3C | Système orthodontique pour le traitement orthodontique des dents d'un patient, procédé de placement d'un appareil pour le traitement orthodontique des dents d'un patient et utilisation de l'appareil d'un tel système orthodontique |
US20200197132A1 (en) * | 2018-12-20 | 2020-06-25 | HIT Health Intelligent Technologies AG | Lingual retainer |
US20200197133A1 (en) * | 2018-12-20 | 2020-06-25 | HIT Health Intelligent Technologies AG | Lingual retainer |
US20210267723A1 (en) * | 2019-01-22 | 2021-09-02 | Dean UltraThin Retainer, LLC | Dental bridge |
CN114732559A (zh) * | 2022-04-15 | 2022-07-12 | 中国人民解放军空军军医大学 | 一种辅助粘接牙周夹板的多功能树脂导板及其制备方法 |
-
2019
- 2019-01-23 FR FR1900592A patent/FR3091817B1/fr active Active
-
2020
- 2020-01-22 WO PCT/FR2020/050087 patent/WO2020152421A1/fr unknown
- 2020-01-22 US US17/424,637 patent/US20220087779A1/en active Pending
- 2020-01-22 EP EP20705237.4A patent/EP3914186A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR3091817B1 (fr) | 2023-07-21 |
FR3091817A1 (fr) | 2020-07-24 |
WO2020152421A1 (fr) | 2020-07-30 |
US20220087779A1 (en) | 2022-03-24 |
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