FR3047165A1 - DEVICE FOR REMOVABLE DENTAL PAIRING - Google Patents

Abstract

Dental adornment device intended to be worn in a removable and reusable manner, comprising at least one non-transparent front tooth surface intended to be superimposed on the vestibular surface of an existing tooth, and means for removably fixing the adornment device dentate on at least one of the existing teeth serving as a support.

Description

Removable dental adornment device

TECHNICAL FIELD OF THE INVENTION The invention is in the dental field and relates to a device for dental adornment. It also relates to various uses of such a device as well as its method and manufacturing system. State of the art

When a person wishes to correct aesthetic defects on one or more teeth and improve his smile, it is particularly known, in addition to a possible orthodontic treatment, to perform an aesthetic dental restoration by means of ceramic facets. The facets are fixed by definitively gluing on the visible front faces of the existing teeth, after sanding these faces to reduce their thickness and form a receiving housing facets. The existing teeth are thus prepared irreversibly beforehand to serve as supports for the facets, in order to obtain the desired aesthetic effect.

Such aesthetic treatment is expensive and irreversible.

The present invention provides a less expensive, non-definitive and more flexible solution for improving a person's smile.

OBJECT OF THE INVENTION To this end, the invention relates to a dental adornment device intended to be worn in a removable and reusable manner, characterized in that it comprises at least one anterior tooth surface, non-transparent, intended to be superimposed on the buccal surface of an existing tooth, and removable attachment means of the dental adornment device on at least one of the existing teeth serving as a support.

The dental adornment device may include a plurality of anterior teeth faces to be superimposed on the anterior surfaces of a plurality of existing teeth juxtaposed.

The dental adornment device may comprise at least one housing for receiving an existing support tooth, advantageously at least two housings, comprising an anterior wall bearing an anterior tooth face and an opposite posterior wall of smaller surface area than the anterior face, intended to cover the end portion of the lingual surface of the same existing tooth, in particular having a minimal impact on the occlusion, the two anterior and posterior walls being interconnected and arranged to clamp the existing tooth serving as a support to allow fixing the dental adornment device on said existing tooth by clipping.

The housing can at least partially match the shape of the existing tooth serving as a support.

The dental adornment device may have a front face comprising a variable thickness in all directions, and / or have a plurality of front faces having different thicknesses between them.

The dental adornment device may have an anterior face and possibly a posterior face intended to come into direct contact with an existing tooth and / or intended to be removably attached to an existing tooth without treatment or prior modification of said existing tooth.

Only the anterior tooth wall of the dental adornment device can completely cover the surface of an existing tooth.

The dental adornment device may comprise at least one anterior tooth surface intended to be superimposed on the vestibular surface of an existing tooth and not comprising a posterior surface intended to cover the lingual surface of the same existing tooth.

Said anterior tooth surface intended to be superimposed on the vestibular surface of an existing tooth may have a real tooth shade and / or be made of a biocompatible material.

The removable fastening means may comprise an adhesive and / or a clip and / or an anchoring and / or interlocking means.

Said anterior face of the dental adornment device may carry a decorative element, in particular a serigraphed graphic representation or at least one coloring layer covering the whole of the anterior face or a decorative paint such as a fluorescent or phosphorescent paint, or the adornment device dental material may comprise a material incorporating a decorative property such as fluorescent or phosphorescent elements.

The walls of the dental adornment device may not exert any displacement force of the existing teeth. The invention also relates to a use of the dental adornment device as described above, for temporarily modifying the aesthetic appearance of a dentition, said use being renewable, or for visualizing the future result of a dental treatment, said device for dental adornment removably attaching to existing teeth without performing dental treatment. The invention also relates to a method of manufacturing a dental adornment device intended to be worn removably and reusable, characterized in that it comprises a step of producing a digital data file representing the device of dental adornment, and a step of making the adornment device directly from the digital data file produced.

The method may include the steps of: - obtaining initial digital data representing at least a portion of the dentition having an initial aesthetic appearance; at least partial virtual representation of said dentition in its initial aesthetic appearance, from the initial data; - modification of the virtual aesthetic appearance of the teeth to obtain a modified aesthetic appearance. The modifying step may include modifying at least a portion of the dental characteristics of the group comprising a tooth color, a tooth shape, a tooth size and an interdental space dimension.

The method may comprise the following substeps: - Obtaining digital data representing the occlusal shape of the dental adornment device at the level of at least one existing tooth serving as a support on which the dental device is able to be clipped; and / or - Obtaining digital data representing all or part of the gingival ends of the dental device, vestibular and / or lingual sides; and / or - determining the occlusion of the existing dentition of a person and determining a geometric limit such that the dental adornment device induces minimal impact on the occlusion; virtual three-dimensional representation of a dental adornment device on a human machine interface. The invention also relates to a manufacturing control device for a dental adornment device, characterized in that it comprises a module for obtaining initial digital data representing at least part of an existing dentition having an aesthetic appearance. initial, a module for creating virtual models representing all or part of the dentition respectively in its initial aesthetic appearance and in at least one aesthetic appearance modified compared to the initial appearance, and a central processing unit and control for the implementation implement a method of manufacturing a dental adornment device as described above.

The control device may comprise a module for at least partial virtual representation of the dentition in its initial appearance, from the initial data, and a module for modifying the virtual aesthetic appearance of the teeth to obtain a modified aesthetic appearance. The invention also relates to a system for producing a dental adornment device, comprising a device for manufacturing a dental adorning device by adding material or subtraction of material and the control device as described above.

The system may include an image capture device. The invention also relates to a computer program comprising program code instructions for controlling the execution of the steps of the method as described above, when said program is executed by a processing unit.

The adornment device or dental dressing is intended to be placed in the mouth, worn and removed by the patient himself at will. It can be worn temporarily for example during a working day or during a party, then removed especially at night and reused the next day. It ultimately allows to disguise the anterior faces of the real teeth using anterior faces dressing or adornment to change the smile of the patient.

Brief description of the drawings

These objects, features and advantages of the present invention will be set forth in detail in the following description of a particular embodiment made in a non-limiting manner in relation to the appended figures among which:

Figure 1 shows a diagram of the system for producing a dental adornment device of a person, according to an exemplary embodiment of the invention.

FIG. 2 represents a flow diagram of the steps of the method for producing a dental adornment device of a person, according to a particular embodiment of the invention.

FIG. 3 represents a three-dimensional view from the posterior face of a dental adornment device, according to a particular embodiment.

Figures 4A to 4D show front views of a dental adornment device carrying decorative elements, according to various specific embodiments.

Description of preferred modes of the invention

The present invention relates to a dental adornment device intended to be worn removably and reusable by a person, to temporarily improve his smile, for example during a working day or during a party. After use, the dental device can be removed by the person, especially at night. It is reusable and can be worn multiple times. FIG. 3 represents, by way of illustrative example, such a device for dental adornment.

By "dental adornment" or "dental dressing" device, it is meant a dental device or apparatus intended to cover the vestibular surface (that is to say that facing the outside of the mouth). one or more existing teeth of a person to improve his smile, in other words the visible aesthetic aspect of at least part of his existing dentition.

The device has no orthodontic treatment function, in particular correction of malpositions of teeth. It does not exert any force on the teeth, no force likely to cause a displacement of a tooth. In addition, it is designed to adapt to existing teeth, without any need for prior treatment of said teeth.

The dental adornment device can be presented as a reusable dental appliance, that is to say for renewable use, which comprises one or more non-transparent front teeth, intended to be superimposed on the vestibular surfaces of existing teeth, for the purpose of improve the smile of the person, that is to say the aesthetic appearance of the visible face of the teeth during a smile of the person. The dental adornment device incorporates removable attachment means on one or more existing teeth, which will be called thereafter tooth (s) serving as a support or "tooth (s) support (s) >>. It can be put in the mouth by the user himself.

According to one embodiment, the fixing means comprise one or advantageously several housings or cavities for receiving a support tooth and for fixing it to this support tooth. These housings are intended to receive support teeth and to clipping by pinching on these support teeth or to be fixed by simply interlocking on these support teeth, to ensure the attachment of the dental device thereon. The dental adornment device thus comprises a removable fastening means of the clipping, interlocking type. The housing of a support tooth at least partially conforms to the shape of this support tooth. It conforms to the shape of at least the vestibular surface and part of the lingual surface of an existing tooth. The posterior face of such a dental adornment device best respects the natural occlusion of existing teeth. In the case of a dental adornment device provided for the upper dental arch, this posterior surface does not include any material at the level of the occlusion of the lingual surface of the existing teeth, and thus has no impact on this occlusion. . It does not extend to the gingival limit on the lingual side, as opposed to the vestibular surface. Thus, the aforementioned housing only marries a portion of the peripheral surface of a tooth.

In other words, a receiving housing of a support tooth is delimited by an anterior wall and by an opposite wall, posterior, intended to be oriented on the lingual side. The anterior wall carries or forms the anterior face of visible tooth, intended to fulfill the aesthetic function. The posterior wall is sized to cover only partially the lingual surface of the support tooth, for example only an upper portion of the support tooth (opposite to the gingival end of the tooth). Thus, only the anterior wall is complete, masks the entire vestibular surface of the support tooth. These two anterior and posterior walls of the dental adornment device are connected to one another via an occlusal wall which extends over the upper part of the support tooth. The anterior, posterior and occlusal walls of the receiving housing of the support tooth and attachment thereto are arranged to fulfill a function of clipping, that is to say of pinching the tooth, or of simple interlocking, so that to ensure the fixing of the dental device on the support tooth. During its installation, the dental device is thus slightly encased in force on the support teeth. As a note, the different faces of the dental adornment device thus come into direct contact with the surface of the existing tooth that they cover, without any intermediate space or introduction of any product making the interface.

There may be some housing intended only to receive or house existing teeth, without fixing function on them. The dental adornment device advantageously comprises portions comprising only anterior faces intended to cover a vestibular surface of the tooth, thus fulfilling only the aesthetic function, without fixing function. These anterior faces are connected laterally to each other, to ensure the continuity of the device. This approach makes it possible to obtain the simplest possible geometry of the dental adornment device, by minimizing the number of fixation housings to the strict minimum to achieve sufficient fixation.

Suppose the dental device concerns N teeth of a person. In a first embodiment, the dental adornment device comprises N receptor housings N teeth respectively and all of the N housing is adapted to provide a fixing function to the N teeth constituting N support teeth. In a second advantageous embodiment, the device comprises N reception slots of N teeth respectively and only a subset of these N housings, comprising n housings (with n strictly less than N and preferably greater than or equal to 2), is adapted to provide a fixing function with n support teeth. In a third embodiment, the dental device comprises p receivers receiving p teeth (with p strictly less than N and preferably greater than or equal to 2) and N-p anterior walls not coupled to the rear walls. These N-p walls are therefore limited to an anterior wall, or even include all or part of an occlusal wall, or all or part of an intermediate sidewall (between two teeth), but no posterior wall. The housings may in all or in part be adapted to ensure attachment to support teeth.

The walls of the dental adornment device are preferably not very thick, in particular the posterior walls which fulfill only the fixation function. The anterior walls, which fulfill the aesthetic function, in addition to a possible fixation function, have a variable thickness to compensate for the defects of the vestibular surface of the existing teeth, this thickness being able to be important if necessary. This thickness may be greater than or equal to 0.3 mm, with no true upper limit. However, the desired aesthetic effect will generally be obtained using a thickness varying within a range of 0.3 to 3 mm inclusive. In order to make up for the aesthetic defects of the existing teeth, these thicknesses may vary according to all or some of the following solutions: For a given height of an anterior face of the dental adornment device (this height being chosen in the direction from the gingival limit to the limit opposite to the gingiva), the thickness of the anterior wall may be variable (that is to say, vary in a right-left direction); and / or - This thickness may vary from the gum line to the opposite limit; and / or the different front faces of the device may comprise different thicknesses.

In summary, the thickness of the anterior wall of a dental adornment device according to the invention can vary in all directions on the same front face and / or all of the front faces. On the other hand, the anterior walls are non-transparent. They have the hue of a tooth. The posterior and occlusal walls may be transparent or non-transparent, for example also having a tooth shade. Finally, the device can have different shapes, include different materials and concern all or part of a person's teeth.

The dental adornment device may be for one of the upper or lower dentitions. Two devices can be provided for the upper and lower teeth of a person respectively. Each device may extend over any number of juxtaposed teeth, preferably at least one canine to another. A dental adornment device is advantageously symmetrical about a median plane, its right part being the symmetry of its left part.

The dental device is adapted to be placed in the mouth and worn removably and reusable. It is advantageously adapted to be temporarily worn on the existing dentition, without exercising a function of correction of dental malposition, especially without orthodontic function or any other dental treatment. Once placed in the mouth on one or more teeth of a user, it does not exert on them of sufficient force to cause movement of the teeth over time. It has an aesthetic function of improving the smile of the user. It can be worn without embarrassment for several hours, for example during a working day or evening, then removed, especially at night. It is reusable and adapted to be worn multiple times.

According to another embodiment, the dental device is reduced to its minimum shape and consists only of the visible anterior surface of the teeth. In this case, it can be fixed by any means other than clipping, for example by direct bonding to existing teeth, without prior treatment of these teeth. In this embodiment, the removable attachment means of the dental adornment device on at least one existing tooth is a bonding, which is not a permanent bond, is reversible.

The dental adornment device may also be adapted for attachment to an accessory present in the mouth of a person, other than an existing tooth. It can be an implant implant or abutment, or any dental restoration. For this, the device comprises a removable attachment means allowing for example a clipping on such a component. As a variant, this removable fixing means may allow anchoring on such a component, in particular in a direction of displacement perpendicular to the gingiva.

The dental adornment device is also adaptable to a situation in which a person has one (or more) missing teeth. In such a case, the dental adornment device may comprise a volume block similar to the volume of the missing tooth, so as to snap between the two existing adjacent teeth and fill the void induced by the missing tooth. This block naturally has an anterior face reproducing the chosen aesthetic appearance of the missing tooth.

The dental adornment device of the invention may be used to temporarily modify the aesthetic appearance of a dentition of a person, the use of the device being renewable. It could also be used to visualize the future outcome of a dental treatment envisioned for a person. This person can wear the dental device for several hours, or even a whole day, so it can optimally apprehend the expected result of the aesthetic restoration project of his teeth.

In another embodiment, one or more anterior surfaces of the dental adornment device carry decorative elements, such as drawings or other graphic representations (for example Mickey's head, a flag, a diamond) serigraphed on the anterior surface or a decorative coloring layer, or several juxtaposed coloring layers, covering the whole of the anterior face (for example blue / white / red layers), as represented in FIGS. 4A to 4D. This decoration can be obtained by a particular paint, for example to form a fluorescent or phosphorescent effect. Alternatively, the decorative effect can be obtained by the material of the dental adornment device itself, which can for example include fluorescent or phosphorescent elements.

We will now describe a quick and low cost method for manufacturing the dental device of the invention, for example plastic, can be put in the mouth and carried removably and reusable by an individual.

The manufacturing method is implemented by a system comprising here the following elements: - an image capture device 1, - a control device 2 and - a manufacturing device 3.

The manufacturing method comprises a first step E1 for obtaining initial digital data relating to all or part of a dentition of a person. The dentition has an aesthetic appearance, or morphology, or aesthetic appearance, initial. By the term "aesthetic appearance" is meant to refer to the morphology and / or aesthetic appearance of a person's teeth. The aesthetic appearance can be defined by various aesthetic features that include, for example, without limitation, the color of the teeth, their shape and size, and the dimension of interdental spaces. In any event, these aesthetic characteristics defining the aesthetic appearance of a person's teeth are characteristics that can be modified. The step E1 comprises an image capture sub-step E10 during which the image-capture device 1 takes digital images IM, (with i = 1, 2, ... N where N is the total number captured images) of all or part of the dentition in its initial appearance. Images taken contain characteristics of the teeth, including characteristics relating to all or some of the following attributes: shape, color, interdental space, position. These attributes are representative of the aesthetic appearance of the teeth involved. The image capture device 1 is advantageously an intraoral camera intended to take images directly inside the mouth of the person. Alternatively, a three-dimensional model of all or part of the dentition of the person may be manufactured beforehand, in a known manner, by molding made from an impression of the dentition, and then taking digital images of the model using of the image capture device.

The image data IM, (with i = 1, 2, ..., N) represent all or part of the dentition of a person in its initial appearance. They are transmitted to the control device 2 and received by the control device 2 during a transmission substep E11. The step E1 of digitization of the dentition and initial digital data transmission IM, is followed by a step E2 virtual 3D representation of all or part of said dentition of the person, from the initial digital data received (c ' i.e. IM image data,). A component of the controller 2 processes the received image data IM, and generates an initial digital data set, denoted DATA0, representing an initial virtual three-dimensional model MOD0. This model MOD0 represents virtually all or part of the teeth of the person according to their initial appearance (including shape, color, interdental space, position). It is represented virtually, for example by displaying on a screen of the control device 2, to allow an operator to view and manipulate it virtually. The representation step E2 is followed by a virtual modification step E3 of the modeled dentition (in whole or in part). The modification or correction step makes it possible to modify the aesthetic appearance of the modeled teeth. It is therefore adapted to make aesthetic changes to the modeled teeth. The modifiable dental characteristics can be morphological and / or aesthetic. For example, they relate to at least one of the following aesthetic characteristics: a tooth color; a shape and / or a size (or dimension) of a tooth, for example in the case of worn, broken, too short teeth, or other type defects; - a dimension of an interdental space.

Modification E3 can also mask minor dental malpositions such as small overlaps.

The one or more modifications made virtually on one or more modeled teeth make it possible to obtain a modified aesthetic appearance of the dentition. This modified aesthetic appearance is intended to enhance, embellish the smile of the person. It thus determines in particular the vestibular surface of the ideal, corrected dentition. Thus, in step E3, a three-dimensional virtual model MODi of at least a portion of the dentition of the person is created, which has a modified aesthetic appearance compared to the initial aesthetic appearance. This model MOD-ι is defined by a dataset DATAi. This model also possibly draws housing or forms adapted to perform the function of removable attachment to at least one existing tooth, without modification or treatment of this existing tooth.

Steps E2 and E3 are executed by a software component of the control device 2. The modified appearance of the teeth is obtained here virtually by manipulating one or more modeled teeth made by an operator using interface means. As a remark, any method of the state of the art for defining aesthetic facets can be implemented. This step can be all or part automated. The result of this step is a set of digital data representing a virtual model of the corrected aesthetic appearance of a person's dentition.

The method continues with a step E4 of producing a digital data file virtually representing a dental ornament device Gi adapted to the existing dentition of a person and artificially reproducing aesthetic modification envisaged according to the modified appearance obtained at the step E3. By the term "adapted to the dentition of a person", it is meant that the dental device is adapted to conform to the shape of at least a portion of the existing teeth of a person. In the embodiment allowing fixation by clipping or interlocking of the dental device on supporting teeth, the dental device comprises surfaces adapted to conform to the shape of one or more support teeth of a person and the digital data comprise the geometric definition. three-dimensional of these surfaces.

The digital file representing the device of dental adornment Gi therefore contains a set of digital data defining the structure of the device and possibly data useful for the construction of the dental device G-ι. It is determined automatically from the virtual model MOD-ι of all or part of the dentition of a person with a modified aesthetic appearance, as created in step E3, in other words from the dataset Digital DATA !. The digital file F-ι of the dental device Gi may therefore contain, in particular, instruction data intended to control the manufacture of the dental device Gi by the manufacturing device 3.

According to one embodiment, the dental adornment device G1 comprises a front portion and a rear portion interconnected and providing tooth receiving receptacles (s), as has been detailed above. It is adapted to conform to the shape of the support teeth so as to be placed in the mouth and worn provisionally on at least a portion of the dentition of the person. The front portion includes a wall for completely covering the visible front surface of one or more teeth of a person. This anterior wall incorporates the modified characteristics defined in step E3 relating in particular to the shape of the teeth, their color, their size and the interdental spaces. The rear or rear portion may comprise a wall adapted to cover at least partially the lingual surface of the tooth or teeth. This wall may have perforated zones.

As a remark, the step E4 implemented in the case of a dental adept device to be clipped onto the teeth may comprise several sub-steps for automatically determining the contours of the dental adornment device, among which: step E41, the digital data representing the occlusal shape of the dental device at the teeth concerned, are obtained by constructing the negative of a virtual model MOD-ι, representing all or part of the dentition of a person, established at the step E3; - The dental adornment device is designed by best respecting the occlusion of the two upper and lower dental arches, so as not to interfere or interfere at least during their contact in the closed mouth position. More specifically, the posterior surfaces of the dental adornment device for the upper dental arch preferably do not extend to the gingival limit. They do not include material at the level of the occlusion of the teeth, that is to say at the level of the support of the teeth of the lower dentition on the lingual surface of the teeth of the upper dentition. This occlusion is automatically detected by the virtual reproduction of a person's existing dentition, and defines a limit when sizing the posterior wall of the upper dental device; in another substep E42, the digital data representing one or more gingival ends of the dental device, the vestibular and / or lingual sides, are obtained. A first approach considers the numerical data of the virtual model MOD-ι, representing all or part of the modified dentition of a person, established in step E3, and the gingival ends are established from the ends given by the virtual model. A second approach is to fix average pre-stored tooth heights in an electronic memory for certain categories of teeth, and to base the calculation of the gingival extremities on these average values and the knowledge of the type of tooth considered. The gingival ends of the dental device are calculated to correspond to the actual boundary between the actual dentition and the actual gingiva. This determination makes it possible to adjust as much as possible the height of the visible anterior faces of the dental adornment device.

The process then proceeds to a step E5 of manufacture of the device of dental adornment, noted Gi. The manufacture is carried out by the manufacturing device 3. It can use a manufacturing technique by adding material, for example by three-dimensional printing. Alternatively, it can use a manufacturing technique by subtraction of material. In this case, the dental device is for example manufactured by machining a block of material, or laser cutting or water jet. In all cases, the manufacturing method uses a biocompatible material, for example of the resin or ceramic type, or even a metal.

During the manufacturing step E5, the manufacturing device 3 is controlled by commands obtained from the digital file corresponding to the dental device to be manufactured. In this case, the control device 2 transmits to the manufacturing device 3 manufacturing control instructions (for example 3D printing control instructions or machining control instructions, depending on the technique used). As a variant, the control device 2 could transmit the file Fi to the manufacturing device. In this case, the manufacturing control instructions would be generated from the F-ι file directly by the manufacturing device.

The material used for the manufacture of the dental adornment device may be a biocompatible material. It is advantageously recyclable.

Thanks to the production of a dental device construction digital file, it can be manufactured directly, without intermediate step of producing a real three-dimensional model of the dentition of a person. With this, the device can be manufactured in the dentist's office quickly. A single visit to the dentist may even be sufficient to obtain the initial DATA0 data representing the dentition of the person (in whole or in part), to make the device of dental adornment and to make it try to the person.

Of course, one could generate several digital files Fi, F2, · construction of several dental devices Gi, G2, to allow the person to test several aesthetic variants of the device dental adornment.

Alternatively, the method may implement an intermediate step E4 'allowing an operator to view the dental adornment device set up virtually on the virtual representation of the existing dentition of the person, for example via a man machine interface on a screen. This virtual representation is three-dimensional, it allows an operator to view not only the front side of the device, to validate the aesthetic result obtained, but also the back side to check the fixing function.

The device 2 for controlling or controlling the manufacture of a dental adornment device comprises the following modules: a module 20 for obtaining initial digital data representing all or part of a dentition having an initial appearance, in species of image data IM,; a module 21 for creating virtual models MOD0, MOD-i representing all or part of the dentition of a person respectively in its initial aesthetic appearance and in at least one aesthetic appearance modified with respect to the initial appearance; a production module 22 able to produce at least one digital data file F-ι representing a dental adornment device G1 adapted to the existing dentition of the person and corresponding to a modified appearance with respect to the initial appearance, created by the module 21; an interface 23 of connection with the manufacturing device 3; a control module 24 adapted to control a device for manufacturing the dental adornment device, from the digital data file; man-machine interface means 25; a central processing unit (CPU) 26.

The module 20 includes a connection interface to the image capture device 1 and initial digital data reception means, containing IM image data, captured and transmitted by the image capture device 1, and supply from this initial data to module 21 for creating virtual models. The received image data is obtained by capturing images of all or part of the teeth of a person using the image-capture device 1. The module 20 is intended to implement the step E11 (in reception).

The model creation module 21 integrates a software component that makes it possible to: create a first three-dimensional virtual model MOD0 representing all or part of the dentition of a person with an initial appearance; creating at least a second 3D virtual model MODi representing all or part of the dentition of a person having a modified appearance by modifying the aesthetic characteristics of the teeth (in particular shape, color, size, interdental space); - manage the display of virtual models created or being created on a screen of the device 2.

The creation module 21 is adapted to implement the steps E2 and E3.

The production module 22 is intended to create a digital file relating to a dental appliance. The digital file represents a dental adornment device adapted to the dentition of a person and reproducing a desired dental aesthetic appearance, at least on the front face of the dentition, modified with respect to the initial appearance. The production module 22 is adapted to implement step E4. The connection interface 23 makes it possible to connect the control device 2 to an external device 3 for manufacturing a dental ornament device, for example a 3D printer.

The control module 24 is adapted to control the operation of the manufacturing device 3, from a digital file produced by the module 22. It is intended to transmit control instructions to the manufacturing device 3 to control the manufacture of braces. The control module 24 is intended to control the execution of the manufacturing step E5 directly from the digital file produced.

The modules 21, 22 and 24 are software modules comprising software instructions for performing the corresponding process steps when the modules are executed by the processing unit 26. The man-machine interface 25 comprises a display screen and / or any other data retrieval means, a keyboard and / or any other means of data entry and / or control, and GUI GUI (Graphical User Interface).

Finally, the control device 2 comprises a central processing unit 26, here comprising a microprocessor, to which all the elements 20-25 of the device are connected and intended to control its operation. The invention also relates to a system comprising the image capture device 1, the control device 2 and the manufacturing device 3. The three components 1, 2 and 3 of the system are here separated. The image capture device 1 and the manufacturing device 3 may be connected to the control device by wire or wireless connection. Alternatively, the image capture device 1 and / or the manufacturing device 3 may be integrated into the control device 2. The invention also relates to a computer program comprising program code instructions for the execution of the steps of the method previously described when said program is executed by a processing unit, in this case the unit 26.

In an alternative embodiment, the dental adornment device could be manufactured in a conventional manner by implementing the following steps: making an impression of the dentition and the jaw of a person, for example alginate or silicone ; manufacture of a three-dimensional model of the dentition, for example in plaster, by molding using the impression made as a mold; modification of the front face of the dentition to correct its aesthetic appearance; molding of the dental adornment device on the three-dimensional model by thermoforming; optionally treatment of the molded dental device (coloring, polishing, or other aesthetic treatment).

Claims (22)

1. A dental adornment device intended to be worn removably and reusable, characterized in that it comprises at least one non-transparent front tooth surface intended to be superimposed on the vestibular surface of an existing tooth, and removable attachment means of the dental adornment device on at least one of the existing teeth serving as a support. 2. A dental adornment device according to the preceding claim, characterized in that it comprises a plurality of anterior faces of teeth intended to be superimposed on the front faces of a plurality of existing teeth juxtaposed. 3. A dental adornment device according to one of the preceding claims, characterized in that it comprises at least one receiving housing of an existing support tooth, preferably at least two housings, having an anterior wall carrying a tooth front surface. and an opposite posterior wall of smaller area than the anterior surface, intended to cover the end portion of the lingual surface of the same existing tooth, in particular having a minimal impact on the occlusion, the two anterior and posterior walls being connected between them and arranged to clamp the existing tooth serving as a support to allow attachment of the dental adornment device on said existing tooth by clipping. 4. Device according to the preceding claim, characterized in that the housing at least partially matches the shape of the existing tooth serving as a support. 5. Dental adornment device according to one of the preceding claims, characterized in that it has a front face comprising a variable thickness in all directions, and / or in that it has a plurality of front faces having different thicknesses between they. 6. Dental adornment device according to one of the preceding claims, characterized in that it has a front face and optionally a rear face intended (s) to come into direct contact with an existing tooth and / or intended (s) to removably attach to an existing tooth without treatment or prior modification of said existing tooth. 7. Dental adornment device according to one of the preceding claims, characterized in that only the anterior tooth wall of the dental adornment device completely covers the surface of an existing tooth. 8. Dental adornment device according to one of the preceding claims, characterized in that it comprises at least one anterior tooth surface intended to be superimposed on the vestibular surface of an existing tooth and which does not include a posterior face intended to cover the lingual surface of the same existing tooth. 9. A dental adornment device according to one of the preceding claims, characterized in that said anterior tooth surface intended to be superimposed on the vestibular surface of an existing tooth has a real tooth shade and / or in that is made of a biocompatible material. 10. A dental adornment device according to one of the preceding claims, characterized in that the removable attachment means comprises an adhesive and / or a clip and / or an anchoring means and / or interlocking. 11. A dental adornment device according to one of the preceding claims, characterized in that said anterior face of the dental adornment device carries a decorative element, including a serigraphed graphic representation or at least one coloring layer covering the entire anterior face. or a decorative paint such as a fluorescent or phosphorescent paint, or in that the dental adornment device comprises a material incorporating a decorative property such as fluorescent or phosphorescent elements. 12. Dental adornment device according to one of the preceding claims, characterized in that its walls exert no displacement force of existing teeth. 13. Use of the dental adornment device according to one of claims 1 to 12, for temporarily changing the aesthetic appearance of a dentition, said use being renewable, or for viewing the future result of a dental treatment, said device dental adornment removably attaching to existing teeth without performing dental treatment. 14. A method of manufacturing a dental adornment device intended to be worn removably and reusable manner according to one of claims 1 to 12, characterized in that it comprises a step (E4) for preparing a file. digital data representing the dental adornment device, and a manufacturing step (E5) of the adornment device directly from the digital data file produced. 15. Method according to the preceding claim, characterized in that it comprises the following steps: - obtaining (E1) initial digital data representing at least a portion of the dentition having an initial aesthetic appearance; at least partial virtual representation (E2) of said dentition in its initial aesthetic appearance, from the initial data; -modification (E3) of the virtual aesthetic appearance of the teeth to obtain a modified aesthetic appearance. Method according to the preceding claim, characterized in that the modifying step (E3) comprises modifying at least a portion of the dental characteristics of the group comprising a tooth color, a tooth shape, a tooth size and a dimension of interdental space. 17. Method according to one of claims 14 to 16, characterized in that it comprises the following substeps: - Obtaining (E41) digital data representing the occlusal shape of the dental adornment device at at least one existing tooth serving as a support on which the dental device is capable of clipping; and / or - Obtaining (E42) digital data representing all or part of the gingival ends of the dental device, vestibular and / or lingual sides; and / or - determining the occlusion of the existing dentition of a person and determining a geometric limit such that the dental adornment device induces minimal impact on the occlusion; virtual three-dimensional representation (E4 ') of a dental adornment device on a human machine interface. 18. A device for controlling a device for dental adornment, characterized in that it comprises a module (20) for obtaining initial digital data representing at least part of an existing dentition having an initial aesthetic appearance, a module (21) for creating virtual models MODO, MOD1 representing all or part of the dentition respectively in its initial aesthetic appearance and in at least one aesthetic appearance modified with respect to the initial appearance, and a central unit (CU) of treatment and control (26) for the implementation of a method of manufacturing a dental adornment device according to one of claims 14 to 17. 19. Control device according to the preceding claim, characterized in that it comprises a module (21) at least partial virtual representation of the dentition in its initial appearance, from the initial data, and a modification module of the virtual aesthetic appearance of the teeth to obtain a modified aesthetic appearance. 20. System for producing a dental adornment device, comprising a device for manufacturing (3) a dental adorning device by adding material or subtracting material and the control device (2) according to one of the claims. 18 and 19. 21. System according to the preceding claim, characterized in that it comprises an image capture device (1). A computer program comprising program code instructions for controlling the execution of the steps of the method according to any one of claims 14 to 17, when said program is executed by a processing unit.