Dental imaging device and kit comprising the imaging device

Abstract

This invention relates to a dental imaging device and a kit including the imaging device. The imaging device includes: - a support; - a tooth retractor integrally formed with the support and defining a retractor opening; - means for securing the image acquisition device to the support in a position oriented to receive an image from the retractor opening; - a light source; the support has a sidewall defining a chamber communicating with the outside via the retractor opening and an acquisition opening, through which the image acquisition device secured to the support receives at least one image from the retractor opening; the support includes at least a compostable and / or biodegradable portion.

Description

[0001] This application is a divisional application. The parent application was filed on July 6, 2021, with application number 202180054541.0 and invention title "Dental Imaging Device". Technical Field

[0002] This invention relates to dental imaging apparatus, and more particularly to dental imaging apparatus for implementing the methods described in International Application PCT / EP2015 / 074896. Background Technology

[0003] PCT / EP2015 / 074896 describes a method that allows for accurate assessment of tooth positioning at the moment of acquiring updated images, based on the following conditions: - A three-dimensional model of the patient's teeth created before treatment, called the "initial reference model"; and - Simple "updated" images of the teeth taken during treatment, such as photographs taken of the patient.

[0004] The method includes an iterative process in which, at each iteration, a tooth model from an initial reference model is moved, and optimal conditions for observing the modified initial model (referred to as the "test reference model") are determined. These optimal observation conditions are defined as conditions that allow observation of the test reference model to make a view of the model as close as possible to the updated image. A series of "test reference models" are tested until a maximum level of correspondence between the test reference model and the updated image is obtained. This final test reference model is then considered a representation of the tooth in its position at the time the updated image is acquired. Ideally, this model (referred to as the "updated reference model") is a digital 3D reference model from which the updated image can be derived, if the model is real. In practice, it actually represents the tooth in its position at the time the updated image is acquired with a high level of accuracy.

[0005] Typically, multiple updated images are needed to assess the localization of multiple teeth. The method must be implemented for each updated image. Therefore, the method described in international application PCT / EP2015 / 074896 can be cumbersome in its implementation.

[0006] In addition, updated images can be used to detect changes in the appearance of teeth or soft tissues such as gums, particularly changes in their color and translucency. However, comparing different photographs does not always yield satisfactory results.

[0007] One object of the present invention is to provide at least a partial response to these problems. Summary of the Invention

[0008] This invention provides an imaging device, comprising: - Stand; - A tooth retractor, said tooth retractor being fastened to the bracket and defining a retractor opening; and - A means for securing the image acquisition device to the bracket when the image acquisition device is oriented to receive an image from the opening of the retractor.

[0009] As will become clearer throughout the remainder of this specification, the device according to the invention advantageously allows for precise positioning of the image acquisition device relative to the dental retractor. In particular, the distance between the fastening device of the image acquisition device and the dental retractor can be predetermined, thereby allowing for accelerated adjustment of the image acquisition device. Furthermore, the orientation of the image acquisition device relative to the support can be predetermined, thereby enabling the approximate prediction of the representation of the dental retractor, and the representation of the patient's dental arch via the dental retractor, on updated images acquired through the image acquisition device.

[0010] This, in particular, accelerates post-processing of images, according to the method in PCT / EP / 2015 / 074896.

[0011] According to the first major improvement, the device includes a mirror fastened to the bracket, and the fastening device is configured to fasten the image acquisition device to the bracket at a position where the image acquisition device is oriented to receive a composite image including a direct image of the retractor opening and an image of the retractor opening reflected by the mirror.

[0012] Therefore, in the working position where the tooth retractor is positioned on the patient's mouth and the image acquisition device is fastened to the bracket by the fastening device, the image acquisition device sees a composite image including a direct image of the tooth observed directly through the retractor opening and a reflected image of the tooth returned by the mirror.

[0013] Therefore, as will be more clearly understood later in the description, the device according to the first major improvement of the invention allows for the simultaneous acquisition of multiple images of teeth viewed from different angles. This thus accelerates the acquisition process.

[0014] Furthermore, determining the conditions for acquiring direct or reflective images allows for the separate determination of the conditions for acquiring reflective or direct images. In fact, knowing the orientation of the mirror and its position relative to the tooth retractor and the acquisition device is sufficient to determine the spatial positioning of the acquisition device, which would allow for the observation of reflective images without the mirror. Therefore, this significantly accelerates the implementation of methods such as those described in international application PCT / EP2015 / 074896.

[0015] Specifically, typically, patients have their teeth photographed from the right side, the left side, and the front. However, software implementing the method described in international application PCT / EP2015 / 074896 ignores the position of the acquisition device at these different steps and cannot infer that position by processing other images. Therefore, the position must be located again each time to determine optimal viewing conditions.

[0016] According to the second major improvement, the device includes: - A colorimetric calibration map and / or a semi-transparent calibration map, preferably both a colorimetric calibration map and a semi-transparent calibration map, said colorimetric calibration map and / or semi-transparent calibration map being preferably secured to the bracket; and - Preferably, the light source is oriented to illuminate the patient's teeth through the opening of the retractor and the colorimetric calibration map and / or the translucent calibration map. The fastening device of the acquisition device is configured to fix the acquisition device in a position oriented to receive images of both the retractor opening and the colorimetric calibration map and / or the translucent calibration map.

[0017] Therefore, as will be more clearly understood later in the description, the device according to the second major improvement of the invention allows for accurate determination of the color and translucency of teeth and / or soft tissues (e.g., gums). In particular, illumination can be monitored to limit interference caused by the lighting environment of the device. Thus, various images taken at different times can be accurately compared.

[0018] According to the third major improvement, the stent is in the form of a box to define a chamber that communicates with the outside essentially only through a retractor opening and an acquisition opening. The acquisition device fastened to the stent receives at least one image of the retractor opening through the acquisition opening.

[0019] Therefore, when the opening and access opening of the tooth retractor are closed, the scaffold defines a closed chamber.

[0020] Therefore, advantageously, the interior of the chamber receives virtually no external luminous radiation, facilitating control of illumination during the acquisition of updated images. The closed chamber also protects patient privacy.

[0021] In one embodiment, the tooth retractor is movably mounted on a support, preferably rotatably mounted on the support, and preferably mounted on the support about a single axis (preferably a horizontal axis in the working position), so that a gap appears between the support and the tooth retractor when the tooth retractor moves relative to the support. A closure is provided to extend, thereby closing the gap. In particular, the closure may have the shape of a flexible membrane with its edges rigidly fixed to the tooth retractor and the support. This membrane may be elastic.

[0022] Advantageously, the flexibility and / or elasticity of the membrane allows the membrane to close the gap between the scaffold and the tooth retractor, even if the size of the gap changes when the tooth retractor moves relative to the scaffold.

[0023] improve

[0024] According to the first improvement, the imaging device has a support including a rigid portion to which an acquisition device is to be fastened, and a deformable portion defining an opening for a retractor, the deformable portion preferably extending between the rigid portion and a conventional tooth retractor.

[0025] The deformability of the deformable portion defining the retractor opening allows the imaging device to adapt to the patient. Therefore, the same frame and tooth retractor can be used for patients with different anatomy. This makes using the device more comfortable and improves the quality of the acquired images.

[0026] The stent is preferably in the form of a box and has a sidewall that defines a chamber communicating with the outside via a retractor opening and a pickup opening, through which a pickup device fastened to the stent receives at least one image of the retractor opening. The deformable portion is preferably at least a portion of the sidewall of the stent.

[0027] In one embodiment, the deformable portion allows the rigid portion to move in a limited manner relative to the retractor opening, specifically limiting the change in angle between the optical axis of the image acquisition device and the retractor opening to less than 30°, less than 20°, less than 10°, or less than 5°. This change is preferably greater than 1° or greater than 3°.

[0028] Preferably, the rigid portion has a tubular shape, making it easier to secure the image acquisition device. Preferably, the length of the rigid portion is greater than 5 cm and less than 20 cm, allowing the patient to easily grasp it to hold the support.

[0029] The deformable portion preferably allows the support to extend and / or collapse.

[0030] Preferably, the deformable portion can be at least partially inserted into and withdrawn from the rigid portion. Thus, the imaging device can be compressed.

[0031] In one implementation, the deformable portion can be separated from the rigid portion. This advantageously facilitates shipping.

[0032] According to the second improvement, the support can extend from a collapsed configuration to a fully extended configuration, and / or can collapse from the fully extended configuration to the collapsed configuration.

[0033] In other words, at least one dimension of the stent has a “collapse” value D in the collapsed configuration. cAnd in the fully extended configuration, it has a collapse value greater than D. c The "extension" value D e .

[0034] In a preferred embodiment, the support, preferably in the form of a box, has a sidewall that defines a chamber communicating with the outside via a retractor opening and an acquisition opening. An acquisition device fastened to the support receives at least one image of the retractor opening through the acquisition opening. The sidewall is extendable and / or collapsible between a fully extended configuration and a collapsed configuration.

[0035] The dimensions are preferably the overall dimensions of the chamber, preferably its length, and the ratio D c / D e Preferably less than 0.5.

[0036] Advantageously, the volume of the support is reduced in the collapsed configuration, thereby reducing storage and transportation costs.

[0037] Preferably, the support is configured such that the viewing angle between the optical axis of the image acquisition device and the retractor opening and / or the distance between the image acquisition device and the retractor opening differs from that in the fully extended configuration and / or in an intermediate configuration between the collapsed configuration and the fully extended configuration.

[0038] Therefore, advantageously, the extension of the stent can alter the acquisition conditions.

[0039] Preferably, the sidewalls are foldable. In particular, the sidewalls preferably comprise corrugated pipes.

[0040] Preferably, the stent is configured such that the extension and / or collapse of the stent is fully or partially guided.

[0041] "Full boot" or "hard boot" means that there is only one intermediate configuration path between the collapsed configuration and the only fully extended configuration.

[0042] "Partial guidance" or "soft guidance" refers to the existence of multiple paths between a collapsed configuration and a single fully extended configuration or multiple fully extended configurations, each achieving different deformations, but some of these deformations require greater effort than others. Guidance is not hard guidance because the patient has multiple possibilities for stent deformation. However, the patient may feel that such deformations are not recommended.

[0043] Therefore, advantageously, patients may feel that they need to make greater efforts to get rid of one or more privileged configurations.

[0044] The privileged configuration preferably corresponds to predetermined acquisition conditions for acquiring images based on a predetermined viewpoint and / or distance.

[0045] For example, after securing the phone to the stand and inserting the dental retractor into the mouth, the patient manipulates the phone. When the patient pushes the phone to the right, they will feel the first "angular" resistance when the optical axis of the phone forms an angle of approximately 40° with the plane of the retractor opening. This tells the patient that the angle is suitable for acquiring an image.

[0046] When the patient pushes the phone toward the retractor opening, he will feel the first "distance" resistance when the distance between the phone and the retractor opening is approximately 20cm. This tells the patient that this distance is suitable for acquiring the first image.

[0047] At this point, the patient has reached the first privileged configuration.

[0048] The patient can push the phone further to the right and / or toward the retractor opening by increasing the thrust against the first resistance. Once he / she leaves the first privileged configuration, the "angle" and "distance" resistances decrease. As the patient pushes the phone further to the right, he / she may feel a second "angle" resistance when the phone's optical axis forms an angle of approximately 60° with the plane of the retractor opening. This informs the patient that the angle is suitable for image acquisition. As the patient pushes the phone further toward the retractor opening, he / she may feel a second "distance" resistance when the distance between the phone and the retractor opening is approximately 10 cm. This informs the patient that the distance is suitable for acquiring a second image.

[0049] At this point, the patient had reached the second privileged configuration.

[0050] According to the third improvement, at least a portion of the scaffold can be degraded by composting and / or biodegradation, preferably according to European standard EN 13432, preferably with a residual amount of less than 10% within 6 months, preferably less than 5%, and preferably less than 1%.

[0051] The portion is preferably made of fibrous cellulose material, and more preferably of cardboard.

[0052] Preferably, more than 50%, more than 70%, more than 80%, or more than 90% of the stent may degrade in this way by weight percentage.

[0053] In a preferred embodiment, the support, preferably in the form of a box, has a sidewall that defines a chamber communicating with the outside via a retractor opening and an acquisition opening. An acquisition device fastened to the support receives at least one image of the retractor opening through the acquisition opening. The degradable portion includes the sidewall or the sidewall itself.

[0054] In the second and / or third improved embodiments, the scaffold carries the image acquisition device, but is not limited to a retractor opening surrounded by the patient's lips in the working position. The patient may or may not wear a tooth retractor independent of the scaffold.

[0055] Of course, the various major improvements and enhancements of the present invention can be combined (provided that the combined features are technically compatible).

[0056] Regardless of the major improvements or enhancements considered, the device according to the invention preferably has one or more of the following optional features: - The support defines a chamber that communicates with the outside via a retractor opening and an acquisition opening, and the acquisition device, which is fastened by the fastening device, receives the composite image through the acquisition opening; - The support is telescopic, making the distance between the retractor opening and the acquisition opening variable; - The device includes at least two mirrors, which are oriented perpendicularly to each other and each returns a reflected image of the retractor opening, each of the reflected images being represented in the composite image; - The device used to secure the acquisition device to the bracket can be deactivated; - The means for securing the acquisition device and / or tooth retractor to the bracket is selected from the group consisting of clamp fasteners, self-gripping straps, grippers, screws, magnets, caps, complementary shapes between the bracket and the acquisition device, and elastic members. - The device includes means for securing the tooth retractor to the support, which can be deactivated so that the tooth retractor can be removably secured to the support; - The tooth retractor includes a tab inserted into a corresponding irregularly shaped compartment of the bracket at the location where the tooth retractor is mounted on the bracket, each compartment having a generally U-shaped cross-section, the U-shaped opening preferably facing upward or downward in the working position of the tooth retractor on the mouth of a patient whose head is kept upright; - In the installation position, the tooth retractor remains bent, thus elastically supported on the bracket; - The bracket includes one or more, preferably two, hooks configured to receive a tooth retractor in the mounting position; - The light source is configured to project a reference coordinate system toward the opening of the puller; - The device includes a monitoring module configured to monitor the characteristics of radiation emitted by the light source, preferably based on the characteristics of light radiation received by the opening of the puller; - The monitoring module is configured to control the light source such that the radiation intensity received by the retractor opening is greater than 50%, greater than 70%, greater than 90%, or even substantially 100% from the light source. - The device includes a processing module in which colorimetric calibration maps and translucent calibration maps are recorded respectively. The processing module includes program code instructions for correcting an image representing the calibration map so that the representation of the calibration map on the image has the color and translucent characteristics. - The scaffold is made of fibrous material, preferably cellulose material; - Stent-borne information, preferably guidance information and / or advertising information used to guide the patient during image acquisition.

[0057] This invention also relates to: - A computer program or "application," particularly a specialized mobile application, which includes program code instructions for guiding imaging, especially preferably for: - Specify the number of updated images to be acquired to the operator, and / or - Guide the operator to position the image acquisition device at a predetermined position relative to the retractor opening, for example, to take a photograph "from the right side," and / or - Guide the operator to position the teeth in a predetermined position relative to the image acquisition device, for example, to take a photograph "from the right side," especially when the image acquisition device is fixed relative to the ground, and / or - Guide the operator during adjustments to the geometry of the support and / or while orienting the patient's mouth in the mirror and / or positioning the patient's mouth on the tooth retractor, and / or - Control one or more actuators that are capable of modifying the geometry, particularly the length of the bracket and / or the orientation of the mirror; - Computer media, such as memory or CD-ROM, on which such programs are recorded; and - Personal devices, especially mobile phones or tablets, that have this program loaded on them.

[0058] Computer programs, in particular, can use neural networks, often employing artificial intelligence.

[0059] The present invention also relates to an imaging kit, comprising: - Imaging apparatus according to the invention; and - An image acquisition device, wherein the acquisition device is fastened to the imaging device in a position oriented to receive an image of a patient's teeth, preferably an image of a dental opening defined by the imaging device, and preferably an image of the retractor opening of a conventional dental retractor preferably fastened to a support of the imaging device.

[0060] Therefore, according to the first major improvement of the present invention, the image acquisition device can acquire the synthesized image.

[0061] The kit according to the invention preferably has one or more of the following optional features: - The acquisition device is a mobile phone; - The mobile phone is secured to the device at the location where it receives an image of the opening of the retractor of the imaging device, particularly an image of the tooth retractor fastened to the bracket of the imaging device, via the front-facing camera of the mobile phone (i.e., the camera on the same side of the mobile phone as the display screen of the mobile phone); - The bracket includes at least one slider, the image acquisition device (preferably a mobile phone) is fastened to the slider, and the slider preferably allows the image acquisition device to slide along at least one sliding direction in a plane perpendicular to the optical axis of the image acquisition device; - The bracket includes at least a first slider and a second slider, and the image acquisition device (preferably a mobile phone) is fastened to the first slider and the second slider. The first slider and the second slider allow the image acquisition device to slide along a first sliding direction and a second sliding direction respectively in a plane perpendicular to the optical axis of the image acquisition device. - The image acquisition device includes a computer program according to the present invention; - The image acquisition device is configured to continuously capture multiple photos with different focal lengths as a result of a single triggering action.

[0062] In a preferred embodiment, the imaging device includes a detection component, and the image acquisition device includes a detector for detecting the detection component, the detector being configured to detect the detection component when the detection component is less than 20 cm, preferably less than 10 cm, preferably less than 5 cm, and / or preferably greater than 1 cm from the imaging device.

[0063] Preferably, the detector for detecting the detection component is configured to detect the detection component only when the detection component is less than 100cm, preferably less than 50cm, preferably less than 30cm, preferably less than 20cm, preferably less than 10cm, or preferably less than 5cm from the imaging device.

[0064] As will become clearer throughout the remainder of this specification, such an imaging kit advantageously allows the image acquisition device to react to the approach of the imaging device, in particular by initiating a computer program capable of guiding the imaging.

[0065] The present invention also relates to a method for manufacturing a support for a device according to the invention, and optionally, to a tooth retractor for a device according to the invention, the method comprising the following steps: A) The precursor of the framework is manufactured at a first location, and optionally the precursor of the tooth retractor is manufactured; and the precursor is provided to the operator, preferably to the patient or orthodontist, at a second location remote from the first location, the distance between the first location and the second location preferably being greater than 1 km and / or less than 20,000 km; B) The precursor is transformed into the scaffold, and optionally into the tooth retractor.

[0066] In one embodiment, in step A), the precursor is a cellulose material and has at least the shape of a sheet, preferably a cardboard sheet, with a thickness preferably less than 6 mm and greater than 0.5 mm. The precursor preferably has fold lines and / or cut lines, and / or includes tearable weakening lines.

[0067] If the precursor has fold lines and / or cut lines, and / or includes tearable weakening lines, then in step B), the operator cuts the precursor along the cut lines, and / or folds the precursor along the fold lines, and / or tears the precursor along the weakening lines, and / or rigidly secures the different parts of the precursor to each other by inserting tabs or lugs into corresponding slots, or by using glue, or by using U-shaped nails or clips, or by using ring and hook fasteners (such as Velcro®).

[0068] In one embodiment, in step A), the precursor is a raw material for a 3D printer, preferably an additive manufacturing printer, and a file is provided to the operator to control the 3D printer to transform the raw material into a support or a portion thereof. In step B), the operator programs the 3D printer with the file to manufacture the support or the portion thereof.

[0069] In one implementation, in step A), the precursor is a set of components of a bracket, which is provided to the operator by mail, and in step B), the operator assembles the components manually or using tools.

[0070] In one implementation, in step A), the precursor is a support or part of a support in a collapsed configuration, and in step B), the operator extends the support or part of the support to a fully extended configuration.

[0071] Further improvements

[0072] The present invention also provides an imaging device, comprising: - Stand; - Preferably, a tooth retractor, preferably independent of the support structure, i.e., not fastened to the support structure, the tooth retractor defining a retractor opening; and - A means for securing the image acquisition device to the bracket.

[0073] In this implementation, no tooth retractor must be secured to the framework. The framework can be independent of the patient, meaning the patient can move the framework without any displacement.

[0074] The bracket is preferably in the form of a bracket placed on the ground or a table, or rigidly fixed to a window glass or mirror.

[0075] In a preferred embodiment, the height of the support is adjustable, thereby modifying the height of the image acquisition device relative to the ground so that it is substantially facing the head, preferably facing the patient's mouth.

[0076] Preferably, the image acquisition device is placed on a support. The means for securing the image acquisition device to the support can be a simple retaining device, such as an edge or hook.

[0077] The various major improvements and enhancements of the present invention, as well as the features of the kit, can be combined with the imaging device.

[0078] Preferably, the image acquisition device is a mobile phone. It preferably has a front-facing camera, i.e., a camera on the same side of the mobile phone as the screen, and it is fixed relative to the bracket so that the front-facing camera faces the patient.

[0079] Therefore, the scene observed by the front-facing camera appears on the phone's display screen, which is facing the patient. Advantageously, the patient can see the scene and optimize the phone's viewing angle and / or distance to obtain an image that suits their needs.

[0080] In a preferred embodiment, guidance information is provided on the display screen to help the patient correctly orient themselves. This information is preferably a marker of position displayed on the display screen, such that when a portion of the patient or an alignment marker added to the patient's reference frame (particularly a conventional tooth retractor) aligns with the marker on the display screen, for example, when superimposed on the display screen or when the marker is completed, a preview image, depending on a predetermined field of view and / or a view at a predetermined distance, allows the image acquisition device to be positioned according to target acquisition conditions.

[0081] Preferably, the marker is selected from the group consisting of: - point, - Geometric shapes, - Colored areas, such as colored areas that have the same color as the alignment marks. - The same shape as the alignment mark or the patient's part. - A shape complementary to the shape of the alignment mark or the shape of the patient's portion. - A line used to roughly align with the direction of the junction between the upper and lower teeth when the teeth are clamped by the patient. - A vertical line used to align with the junction between the two upper incisors. - Marks corresponding to the position of the eyes or marks in the form of an outline in which the patient's mouth or face must be located. - A two-dimensional or three-dimensional digital model of a human body part, specific to or not specific to the patient, preferably representing the lips, mouth, or teeth, wherein the two-dimensional or three-dimensional digital model is particularly a two-dimensional or three-dimensional digital model of the dental arch, preferably a two-dimensional or three-dimensional digital model of the patient's dental arch, mouth, or lips, and - Combinations of these tags.

[0082] The present invention also relates to a method for acquiring images using a kit according to the invention. The image acquisition device is preferably a mobile phone, and has a front and a back. The front includes a display screen and, preferably, a front-facing camera. The back is opposite to the front and includes a rear-facing camera. The support (preferably in the form of a box) of the imaging device has a sidewall that defines a chamber communicating with the outside via a retractor opening and an acquisition opening, through which the acquisition device receives an image from the retractor opening after it is secured to the support.

[0083] According to the first embodiment, the method includes the following steps: a) The patient secures the phone so that the phone's rear camera can observe the retractor opening through the opening; b) The patient places their lips around the opening of the retractor so that the patient's teeth are visible through the opening of the retractor; c) Preferably, the display screen provides guidance information, and the patient observes the reflection of the display screen on the mirror and modifies the position of the mobile phone according to the guidance information to meet the target acquisition conditions; d) The patient uses a mobile phone to acquire images.

[0084] According to the second embodiment, the method includes the following steps: a') Preferably, the patient fixes the bracket relative to the ground, preferably to a window or mirror; b') The patient fixes the phone relative to the stand so that it is fixed relative to the ground. Preferably, the patient places the phone on the stand, preferably with the front-facing camera of the phone basically facing the patient. c') Optionally, the patient may place their lips around (preferably defined by the tooth retractor) the retractor opening, or use their fingers or a tool (such as a spoon) to separate their lips so that the patient's teeth are visible; d') Preferably, the display screen provides guidance information and the patient observes the guidance information on the display screen; e') The patient preferably modifies the position of their head according to the guidance information to meet the target acquisition conditions, particularly to achieve a target position and target orientation relative to the mobile phone; and f') The patient uses a mobile phone to acquire images.

[0085] The target acquisition conditions preferably correspond to specific images to be acquired, for example, images to be acquired from the left or right side of the patient's teeth or face. They are predetermined and can be stored in or sent to a mobile phone.

[0086] Instead of guiding the phone to move, the phone is fixed relative to the ground, which allows for the use of a very simple stand.

[0087] The stand can be a simple housing with one or more suction cups, allowing it to be fixed to a glass panel. The stand can be a desk or a console.

[0088] The stent is preferably made of plastic and / or fiber materials, and more preferably of cellulose materials (such as cardboard). It can be sent to the patient by mail, or a template of the stent can be sent to the patient by email or made available to the patient online.

[0089] In a preferred embodiment, in step b'), the patient adjusts the height of the phone relative to the ground so that it is substantially facing the patient's head, preferably facing the patient's mouth. Preferably, the patient adjusts the height of the stand to change the height of the phone.

[0090] definition

[0091] "Main improvements of the invention" defines particularly significant optional features.

[0092] "Patient" is understood to mean anyone for whom the device according to the invention can be administered, whether or not that person is ill, or whether or not that person is currently receiving treatment. The device according to the invention can be used on animals other than humans.

[0093] A “mobile phone” is a device weighing less than 500 grams that is equipped with sensors that enable it to capture images, exchange data with another device more than 500 km away, and display the data, particularly the images.

[0094] A "support" is part of an imaging device that is fastened or fixed to an image acquisition device. A dental retractor for maintaining a patient's mouth at least partially open may be fastened to or integrated with the support. The retractor opening is an opening defined by the dental retractor through which the image acquisition device can observe the patient's teeth. Preferably, the support and the dental retractor define a chamber that opens outward through the acquisition opening and the retractor opening.

[0095] In the working position, the retractor opening faces the patient's teeth and is surrounded by the patient's lips. Whether the tooth retractor is fastened to or integrated with a framework, it should be rigid enough to push the lips away from the teeth, thus making the patient's teeth visible through the retractor opening.

[0096] Tooth retractors can be integrated into the framework.

[0097] The tooth retractor may be the end portion of a tube, preferably having a circular or elliptical cross-section, or a ring. The tube may be a support. The tooth retractor may be the edge of the sidewall of the chamber defined on one side of the mouth.

[0098] Preferably, the tooth retractor includes a margin arranged such that the patient's lips can rest against it in the retracted position. This margin may be radial, defined relative to the axis of the retractor opening.

[0099] The tooth retractor can be fastened to the support in any way, preferably rigidly.

[0100] The viewing angle of the acquisition opening or image acquisition device relative to the retractor opening is the angle between the axis of the acquisition opening or the optical axis of the image acquisition device and the plane of the retractor opening, respectively.

[0101] The distance between the opening and the retractor opening is the distance between their respective centers.

[0102] The axis L of the chamber defining the retractor opening and the acquisition opening is a line extending along the center of the chamber between the centers of the acquisition opening and the retractor opening. It defines the direction along the length of the chamber it measures.

[0103] The "transverse plane" is a plane perpendicular to axis L.

[0104] The width of the chamber is the maximum overall dimension of the chamber's cross-section, that is, the maximum overall dimension of the cross-section perpendicular to the chamber's axis L.

[0105] The thickness of a chamber is the minimum overall dimension of its cross-section.

[0106] The "acquisition conditions" for acquiring dental images specify the position and orientation of the image acquisition device relative to the patient's teeth in space, and preferably specify the calibration of the image acquisition device so that the image can be acquired by direct observation during the acquisition. Therefore, the acquisition conditions for acquiring reflected images specify the position and orientation of the image acquisition device in space that must be adopted in order to acquire reflected images in the absence of a mirror.

[0107] The "calibration" of an acquisition device consists of a set of calibration parameter values. These calibration parameters are inherent to the acquisition device (unlike its position and orientation), and their values ​​affect the acquired image. For example, aperture is a calibration parameter that modifies the depth of field. Exposure time is a calibration parameter that modifies the brightness (or "exposure") of the image. Focal length is a calibration parameter that modifies the field of view, or the degree of "zoom." Sensitivity is a calibration parameter that modifies the response of the digital acquisition device's sensor to incident light.

[0108] Preferably, the calibration parameters are selected from the group consisting of aperture, exposure time, focal length, and sensitivity.

[0109] An "image" refers to a two-dimensional image, such as a photograph. An image is composed of pixels. The acquired image is an extraoral image, that is, an image taken from outside the patient's mouth.

[0110] "Updated image" refers to an image acquired by an image acquisition device. According to the first major improvement of the present invention, a composite image is an example of an updated image.

[0111] The term "fastened" means "rigidly fixed." The term "fastened" does not necessarily mean "securely fixed." The term "fixed" includes both rigid and non-rigid fixation. Specifically, an image acquisition device placed on a support is considered fixed to the support.

[0112] Unless otherwise specified, the terms “including,” “comprising,” and “having” shall be interpreted broadly and not restrictively. Attached Figure Description

[0113] Additional features and advantages of the invention will become more apparent from the following detailed description and study of the accompanying drawings, wherein: - Figure 1 The device according to the invention is shown in perspective view, viewed from the side of the tooth retractor. - Figure 2 The device according to the invention is shown in perspective view from the side where the opening is located; - Figure 3 An example of a composite image is shown; - Figure 4a , Figure 4b and Figure 4c The views shown are from above, from the acquisition opening side, and from the retractor opening side. Figure 1 The equipment; - Figure 5a and Figure 5b They are shown respectively Figure 2 The equipment, in which the support is in the retracted and extended positions respectively; - Figure 6a , Figure 6b and Figure 6c Perspective view ( Figure 6a and Figure 6b ) and top view ( Figure 6c The image shows a portion of the support frame of the device according to the invention, such as... Figure 6b As shown, the tooth retractor can be installed on this part of the bracket; - Figure 7 A side view of a kit according to the invention, including an imaging device according to the invention, is shown; - Figure 8a , Figure 8b This demonstrates how the device can be used according to the second improvement; - Figures 9a-9h Different views of the kit according to the invention are shown, the device being a device according to a first improvement. The tooth retractor is not shown.

[0114] In different accompanying drawings, the same or similar components are represented by the same reference numerals. Detailed Implementation

[0115] equipment

[0116] Figure 1 The imaging device 10 shown includes: a support 12, which is optionally in the form of a retractable box; a dental retractor 14; preferably at least one mirror 16; and Figure 2 The fastening device 18 of the image acquisition device 19 shown.

[0117] In one embodiment, the support 12 includes a convex portion 12a and a concave portion 12b, which are mounted in the retracted position along the retractor axis X. Figure 5a ) and unfolding position ( Figure 5b One slides between the other inside.

[0118] In one embodiment, a scale is provided on the convex portion 12a of the bracket. Preferably, the scale provides an indication that helps adjust the length of the bracket 12 along the axis X, for example, by marking each type of image acquisition device.

[0119] The support 12 defines the chamber 20, the length of which along the axis X depends on the relative positions of the convex and concave portions of the support 12 when the box is telescopic or constant.

[0120] In a preferred embodiment, the box is non-stretchable. Figure 7 When the box is non-extendable, the distance between the puller and the acquisition opening is advantageously constant. This facilitates the analysis of updated images. Furthermore, this implementation is advantageously simple, inexpensive, and ergonomic.

[0121] In the illustrated embodiment, the chamber 20 communicates with the outside at two opposite end faces of the support 12 via the retractor opening 24 and the access opening 26.

[0122] The sidewall 30 of the support 12 extending between the two end faces is preferably substantially cylindrical along the axis X, and preferably has a rectangular cross-section.

[0123] In one embodiment, the support 12 is provided with a window through which light from the surrounding environment can reach the interior of the cavity 20 to illuminate the tooth.

[0124] However, preferably, the chamber 20 is connected to the outside only through the retractor opening and the access opening.

[0125] The box thus constructed can be made of, for example, plastic or fibrous materials, preferably cellulose materials (such as cardboard).

[0126] The fastening device 18 is configured such that the image acquisition device can be fastened at the acquisition position where its objective lens faces the acquisition opening 26 or closes the acquisition opening 26.

[0127] The means 18 for securing the acquisition device to the bracket 12 can be of any type. Preferably, they allow for rigid fastening. Preferably, they can be reversibly deactivated, i.e., the user can freely attach the acquisition device to the bracket and detach the acquisition device from the bracket.

[0128] Preferably, the fastening device 18 of the acquiring device is selected from the group consisting of clamp fastening devices, Velcro® type self-gripping straps, grippers, screws, magnets, elastic members, and the shape complementarity between the bracket and the acquiring device. Figure 2 In the embodiment shown, the fastening device 18 consists of a cover that can be clamped onto the bracket 12.

[0129] In one embodiment, the fastening device 18 of the acquisition device is adapted to fasten, for example, a conventional camera of the reflective type.

[0130] Preferably, such as Figure 7As shown, the device 18 for securing the acquisition device is magnetic. Specifically, one or more magnets 181, 182 can be mounted on a support, and one or more metal parts can be secured to the image acquisition device to engage with the one or more magnets. In particular, a metal plate 32 can be quickly held on the image acquisition device, preferably sandwiched between the acquisition device and the protective housing secured to it.

[0131] In one embodiment, the acquisition device includes multiple metal components and / or the support includes multiple magnets.

[0132] Therefore, advantageously, it is sufficient for the operator to bring the acquisition device close to the support in order to secure the acquisition device to the support. The use of magnetic fastening also allows for very precise and reliable fastening, even when the operator is not looking at the support or the acquisition device.

[0133] Preferably, the means 18 for securing the acquisition device, particularly one or more magnets and metal components, is configured such that the acquisition device can be secured to the bracket at only one predetermined position. Therefore, securing the acquisition device does not require special operator training.

[0134] Where appropriate, visual guidance can be presented to guide the operator and ensure the correct positioning of the acquisition device.

[0135] The tooth retractor 14 may have the characteristics of a conventional retractor. A conventional retractor typically includes an edge 34 extending around the retractor opening 24, the edge 34 being arranged such that the patient's lips can rest thereon, thereby making the patient's teeth visible through the retractor opening. In the illustrated embodiment, the tooth retractor 14 also includes a protrusion 36 arranged to move the cheek away from the tooth extension, and a right flap 38a and a left flap 38b substantially perpendicular to the axis X for easy gripping.

[0136] Edge 34 has a channel shape configured to hold the patient's lips.

[0137] The tooth retractor 14 is preferably made of a biocompatible material, such as a plastic material.

[0138] Preferably, the tooth retractor is removable, meaning the operator can mount it onto or remove it from the support. Therefore, advantageously, the same support can be used for multiple retractors, particularly for multiple retractors of different sizes.

[0139] The device 15 for securing the tooth retractor to the support can be, for example, a clamp fastening device, a Velcro® type self-gripping strap, a gripper, a screw, a magnet, shape complementarity between the support and the tooth retractor, and an elastic member (such as an elastic band).

[0140] In one embodiment, the tooth retractor 14 is secured by inserting one of the right tab 38a and the left tab 38b into the compartment of the support and then clamping the other tab onto the support.

[0141] In one embodiment, the tooth retractor 14 is secured by clamping the tabs into the corresponding compartments of the support.

[0142] In a preferred embodiment, such as Figures 6a-6c As shown, the device 15 for securing a dental retractor to a support includes hooks on which the dental retractor 14 can be hooked. The device 15 for securing the dental retractor to the support preferably includes a right hook 40a and a left hook 40b, which are arranged to receive the transverse right protrusion 38a and left protrusion 38b of the dental retractor, respectively. Since the right and left hooks are similar, only one hook will be described in detail below.

[0143] Preferably, the hook protrudes from the rear surface 44 of the bracket, substantially perpendicular to the axis X, as shown below. Figure 1 As shown. The rear surface 44 is preferably made of a plate 47 fastened to the edge of the side wall 30 of the bracket 12. Figure 6a )limited.

[0144] Preferably, the hook takes the form of a corner portion 45. This corner portion preferably includes a first wing and a second wing perpendicular to each other. The first wing 481, fastened to the rear surface 44 of the support, is preferably substantially parallel to the axis X, and the second wing 482 is preferably substantially perpendicular to the axis X and preferably extends upward from the first wing. The corner portion 45, together with the rear surface 44 of the support, defines a compartment with a U-shaped profile, the main upward-oriented opening 46 of which is sized to accommodate the tab of a tooth retractor. Again preferably, the irregularly shaped compartment opens at its right and left ends through a right opening 48 and a left opening 50 through which the tab of the tooth retractor slides into the hook, i.e., between the rear surface 44 of the support and the second wing 482 of the corner portion 45, until it abuts against the first wing 481.

[0145] Preferably, the hook is configured such that the tooth retractor can be inserted therein by force alone, preferably by resiliently opening the hook.

[0146] Preferably, the hook is configured such that the tooth retractor can be inserted therein without deformation, preferably by bending about an axis Y that is substantially perpendicular to axis X, and preferably by being inserted substantially vertically in the working position.

[0147] Preferably, in the position where the tooth retractor is mounted on the bracket, the fastening device 15 keeps the tooth retractor bent about axis Y.

[0148] Therefore, in Figure 6cIn this embodiment, the axis Z of the corners of the left and right hooks a and Z b Inclined relative to a transverse plane P perpendicular to axis X, and with the right and left tabs of the retractor substantially coplanar when at rest and separated from the support, the retractor's main openings 46 are substantially the same width as the thickness of the right and left tabs, respectively. This forces the operator to bend the retractor around axis Y to insert the tabs into the hooks. The shape of the hooks prevents the retractor from returning to its resting position.

[0149] Advantageously, the resulting tooth retractor has elastic support on the support structure, which helps to keep it in the proper position.

[0150] The device 15 for securing a tooth retractor is preferably a magnet or comprises a magnet and a metal insert that mates with the magnet. Preferably, the magnet is rigidly fixed to the support and mates with the metal insert that is rigidly fixed to the tooth retractor. Advantageously, the same support can be used with different retractors, which may have different sizes, at a limited cost.

[0151] Preferably, the tooth retractor includes two magnets or two metal inserts located on the right and left sides of the retractor opening, preferably two metal inserts (preferably made of inox (stainless steel)). The metal inserts advantageously have better high-temperature resistance.

[0152] In one embodiment, the tooth retractor includes a magnet located in a first position, for example, to the right of the retractor opening, and a metal insert located in another position, for example, to the left of the retractor opening, and the support includes the corresponding metal insert and magnet. Advantageously, the patient cannot reverse the position of the tooth retractor, i.e., place the lower part of the tooth retractor above its upper part.

[0153] Magnets can also be used on tooth retractors and frameworks. The magnets are preferably oriented such that the tooth retractor can be secured to the framework in only one predetermined position.

[0154] In a preferred embodiment, the device includes a light source 51, which is preferably oriented toward the retractor opening 24. Figure 5a The orientation is such that the patient's teeth are illuminated through the retractor opening 24. The light source 51 may emit white light, monochromatic light, infrared radiation, or preferably ultraviolet radiation.

[0155] Light source 51 can be a flash.

[0156] The light source is preferably secured to the housing. The light source preferably includes an LED.

[0157] In one embodiment, the light source 51 is configured to project a reference system (preferably a laser grid) onto the tooth through the retractor opening 24. Advantageously, showing the reference coordinate system on the image helps in determining the shape of the tooth. Thus, the shape of the tooth can be estimated for the first time without implementing the method described in PCT / EP2015 / 074896.

[0158] In one embodiment, threads are formed on the sidewall 30 of the housing, preferably on the sidewall of the concave portion 12b of the housing. The threads are preferably shaped to allow the bracket to be fastened to the camera tripod.

[0159] In one embodiment, the device further includes an acquisition cover and a retractor cover, which are shaped to selectively close the acquisition opening and the retractor opening to facilitate storage of the device. Preferably, the retractor cover is shaped to selectively close the retractor opening after the retractor has been disassembled.

[0160] According to a first major improvement of the invention, the device includes a mirror 16.

[0161] Mirror 16 is fastened to the inner surface of sidewall 30.

[0162] Mirror 16 is preferably flat.

[0163] There are no restrictions on the number or shape of the mirrors. In particular, the shape of the mirrors can be rectangular, spherical, elliptical, octagonal, or hexagonal.

[0164] In the illustrated embodiment, the mirror 16 covers the entire inner surface of the sidewall of the chamber 20, at least covering the entire inner surface of the sidewall of the chamber 20 in the concave portion 12b of the support 12, and preferably also covering the entire inner surface of the sidewall of the chamber 20 in the convex portion 12a of the support.

[0165] In one embodiment, the device includes four mirrors, each positioned on one of four faces of a support, particularly a concave portion 12b of the support, and preferably a convex portion 12a. In a preferred embodiment, each mirror completely covers the face of the support 12 on which the mirror extends.

[0166] The length of a mirror can be greater than 3cm, greater than 5cm, and / or less than 30cm, less than 20cm, less than 15cm, or less than 10cm. The width of a mirror can be greater than 2cm, greater than 3cm, and / or less than 10cm or less than 8cm.

[0167] In the illustrated embodiment, the mirror is fastened to the bracket, preferably specifically fastened to the bracket, for example by adhesive fastening.

[0168] Mirrors 16, preferably each mirror 16 extends parallel to axis X. In the illustrated embodiment, mirrors 16 extend perpendicularly to each other in pairs.

[0169] The simultaneous presence of the mirror and the light source 51 is particularly advantageous because it allows for the acquisition of images of the teeth that simultaneously show the reflection of the light source 51 from the teeth, as well as the reflection of a virtual light source obtained by reflecting the light source 51 through the mirror. Analyzing the relative positions of these reflections in the images advantageously allows for a rough determination of the orientation of the tooth surface from which they return and the position of that surface relative to the acquisition device.

[0170] According to a second major improvement of the invention, the device includes a colorimetric calibration chart 52 and / or a translucent calibration chart 54, which (preferably in chamber 20) are fastened to a support, or to a retractor cover, or to a mouth retractor.

[0171] The number and shape of calibration maps are unlimited. In one Figure 6a In one embodiment, the support supports, for example, three colorimetric calibration charts 52 and three translucent calibration charts 54.

[0172] Advantageously, the colorimetric calibration diagram 52 and the translucent calibration diagram 54 make it possible to correct tonal errors specific to each image acquisition device for each image.

[0173] Colorimetric calibration chart 52 and translucency calibration chart 54 also facilitate the determination of the accurate color and translucency of teeth or gums, thereby allowing the detection of any changes in these properties.

[0174] Preferably, the colorimetric calibration chart 52 and the translucent calibration chart 54 are fastened near the opening of the retractor, preferably at a distance of less than 5 cm, less than 3 cm, and less than 1 cm from the opening of the retractor. Preferably, the colorimetric calibration chart 52 and the translucent calibration chart 54 are substantially fastened in the plane of the retractor opening, such as... Figure 6a As shown.

[0175] Preferably, the monitoring module 60 monitors the characteristics of the radiation emitted by the light source 51, and more preferably, the characteristics of the light radiation received by the retractor opening. A light sensor may be placed near the retractor opening to evaluate the light radiation received by the retractor opening.

[0176] In one implementation, the monitoring module 60 controls the power of the light source 51 such that greater than 50%, greater than 70%, greater than 90%, or even essentially 100% of the radiation intensity received by the retractor opening comes from the light source 51.

[0177] According to a third major improvement of the invention, the support is in the form of a box, which communicates with the outside essentially only through a retractor opening and an acquisition opening. Advantageously, the influence of the external environment on the box is limited, thereby allowing image acquisition under constant conditions. Furthermore, when the device includes a light source 51, the closed box advantageously allows for the limitation of the power of the light source 51.

[0178] Preferably, the total area of ​​the openings other than the spacer and the access opening is less than 10% of the sidewall area of ​​the box defining the chamber 20, more preferably less than 5%, and more preferably less than 1%. Preferably, the box does not include such "other openings".

[0179] In one embodiment, the sidewalls defining chamber 20 are formed or composed of a material that does not allow for accurate visualization of the contents of chamber 20, including the patient's dental arch when the device is in the working position with the patient's lips positioned in the passage of the dental retractor. Advantageously, such sidewalls provide particularly complete protection of the user's privacy when acquiring updated images.

[0180] In one implementation, the sidewalls are translucent.

[0181] Preferably, the sidewalls are opaque. Advantageously, the internal volume of the chamber is substantially free from external light, thereby ensuring constant conditions for acquiring updated images.

[0182] According to a first improvement of the invention, the stent has sidewalls defining a chamber, and the sidewalls include a rigid portion defining an access opening and a deformable portion defining a retractor opening.

[0183] "Rigidity" means that after the image acquisition device is secured, the rigid part essentially maintains its shape when the operator manipulates the rigid part to acquire an image.

[0184] "Deformable" means that the shape of the deformable part can be modified by the operator, preferably without any tools, especially for changing the distance between the center of the acquisition opening and the center of the retractor opening and / or the angle of the acquisition opening relative to the retractor opening.

[0185] According to a second improvement of the invention, the deformable portion can in particular be extendable.

[0186] The deformable portion can be used to modify the acquisition conditions used to obtain the image.

[0187] Deformable components can be used to improve patient comfort. In particular, when conventional retractors are fixed to rigid supports, their stiffness may result in a shape that does not conform to the anatomy of all patients. Deformable components allow for adaptation to the anatomy of each patient.

[0188] Deformability also allows for the fastening of conventional tooth retractors of different sizes.

[0189] The deformability of the deformable portion can be limited. Specifically, the sidewalls in the deformable portion are preferably configured such that they only allow: - Obtain the change in the viewing angle of the opening relative to the retractor opening as less than 30°, less than 20°, less than 10°, and / or greater than 1°, and / or - The distance variation between the center of the opening and the center of the retractor opening is less than 5cm, less than 3cm, less than 2cm, less than 1cm and / or greater than 0.1cm.

[0190] The deformable part can be, in particular, a bellows, especially as described above, or a flexible skirt or a flexible bead.

[0191] When the deformable portion is used to improve patient comfort, it is preferably fixed to the tooth retractor.

[0192] According to a second improvement of the invention, the sidewalls of the stent, preferably defining the chamber of the stent, can extend from a collapsed configuration, preferably manually, and preferably without any tools.

[0193] "Collapse" is an operation in which the stent (preferably the sidewalls) becomes more compact. Collapse can in particular cause certain parts of the stent, preferably certain parts of the sidewalls, to be pushed toward each other, thus becoming adjacent to each other.

[0194] "Extend" is the opposite operation.

[0195] In a collapse configuration, the equipment is advantageously more compact. As a result, storage and transportation costs are reduced.

[0196] In one embodiment, at least one dimension of the stent, particularly the dimension of the chamber defined by the sidewalls, has a “collapse” value D in the collapsed configuration. c In a fully extended configuration, it has a collapse value greater than D. c The "extension" value D e Preferably, the ratio D c / D e Less than 0.5, preferably less than 0.4, preferably less than 0.3, preferably less than 0.2, preferably less than 0.1.

[0197] Preferably, the collapse value D c Less than 5cm, preferably less than 4cm, and preferably less than 3cm.

[0198] The dimension can be the length measured along the axis L of the chamber, or the width or thickness of the chamber, preferably the length or width, preferably the length.

[0199] Of course, the sidewalls can extend along several dimensions, such as along the length and width of the support.

[0200] Preferably, the sidewalls can also be converted from a fully extended configuration to a collapsed configuration.

[0201] Collapse may occur due to the rigid portions of the sidewalls being inserted into each other in a telescoping manner. However, it is preferably caused by deformation of the deformable portions of the sidewalls, and more preferably by folding of the sidewalls.

[0202] Preferably, the sidewall includes a predetermined fold line that acts as a hinge to modify the dimensions. The sidewall is preferably foldable along its length. The fold line preferably extends in at least one transverse plane.

[0203] In a preferred embodiment, the sidewall includes a bellows, which is preferably configured to allow extension along the axis of the opening and preferably collapses. The bellows preferably comprises more than 1, more than 2, more than 3, more than 4, and / or less than 10, less than 8, less than 7, or less than 6 sections.

[0204] In one embodiment, the sidewall includes a resilient member. Pulling the resilient member allows the sidewall to extend to modify the dimensions.

[0205] "Path" refers to a series of intermediate configurations of the sidewall between the collapsed configuration and the fully extended configuration.

[0206] Preferably, in the fully extended configuration and / or intermediate configuration, and preferably in any fully extended configuration and / or any intermediate configuration, the viewing angle and / or distance between the acquisition opening and the retractor opening can differ from that in the collapsed configuration. Therefore, the modification of the sidewall shape allows for modification of the acquisition conditions used to acquire images.

[0207] In one implementation, the orientation of the retractor opening relative to the acquisition opening can be easily modified, thereby allowing images to be acquired from different perspectives.

[0208] Advantageously, the bellows allows for sidewall extension and collapse, but also provides some flexibility in image acquisition. It also offers several fully extended configurations.

[0209] Preferably, in the fully extended configuration and / or intermediate configuration, the support has a stable shape, i.e., when the imaging device is held by the patient solely by the tooth retractor, the retractor opening extends vertically and the sidewalls maintain their shape.

[0210] Preferably, in the fully extended configuration and / or intermediate configuration, and preferably in any fully extended configuration and / or any intermediate configuration, the bracket maintains a stable shape even when the phone is carried at the end of the bracket defining the access opening. Advantageously, the device is easier to use.

[0211] Preferably, the sidewall is configured such that the viewing angle of the acquisition opening relative to the retractor opening is limited to less than 100°, preferably less than 90°, preferably less than 80°, preferably less than 70°, and / or greater than 10°, preferably greater than 15°, and / or the distance between the center of the acquisition opening and the center of the retractor opening is limited to greater than 5 cm, preferably less than 30 cm, less than 25 cm, or less than 20 cm. Advantageously, the acquisition conditions for acquiring the image are thus limited.

[0212] In one implementation, the sidewalls are configured such that their flexibility depends on their configuration. In other words, depending on their configuration, changing the shape of the sidewalls and chambers is more or less difficult. The operator can thus identify one or more permissible viewing angles and / or distances, i.e., one or more permissible configurations of the sidewalls. These permissible configurations of the sidewalls may specifically correspond to predetermined acquisition conditions for acquiring images, such as for acquiring images of the patient “from the right side,” “from the left side,” and “from the face.”

[0213] It advantageously makes image acquisition easier and faster.

[0214] In one embodiment, the sidewall includes a bellows with a variable thickness to define the preferred configuration.

[0215] The sidewalls may extend along their entire length or along a portion of their length.

[0216] Figure 8a and Figure 8b The second improved device is shown as an example of how it can be used.

[0217] Figures 9a-9h Examples of devices according to the first and second improvements of the present invention are shown.

[0218] In this embodiment, the support includes a rigid portion 64 defining an access opening 26 and a deformable portion 66 defining a retractor opening 24.

[0219] In one embodiment, the bellows can be pushed into the rigid proximal portion 64, which makes the device more compact and protects the bellows when the device is not in use.

[0220] The rigid part 64 includes a rigid tube 70 and a means 18 for securing the acquisition device to the bracket 12.

[0221] The means 18 for securing the acquisition device to the bracket 12 can be of any type. Preferably, they allow for rigid fastening. Preferably, they can be reversibly deactivated, i.e., the user can freely attach the acquisition device to the bracket and detach the acquisition device from the bracket. They can be selected from clip fastening devices, Velcro® type self-gripping straps, grippers, screws, magnets, complementary shapes between the bracket and the acquisition device, and elastic members.

[0222] In the illustrated embodiment, device 18 defines a track, into which image acquisition device 19 (here, a mobile phone) is inserted with slight force. These devices could also be a pair of elastically compressed claws for the mobile phone.

[0223] Advantageously, the position of the phone along the track or perpendicular to the compression direction of the claw can be modified.

[0224] The rigidity of the rigid parts makes it easier to secure the image acquisition device.

[0225] The tube 70, preferably having a rectangular cross-section, is similar to the box described above, but does not define the retractor opening 24. More precisely, it opens to the outside only via an access opening 26, through which an access device secured to the support receives at least one image of the retractor opening 24. On the side opposite the access opening, the tube 70 connects to the collapsible portion 66 via a common intermediate opening 72, thereby defining a chamber that preferably opens to the outside only through the retractor opening and the access opening.

[0226] The length L of tube 70 70 Preferably, it is larger than 5cm and / or smaller than 20cm, preferably smaller than 15cm, and most preferably smaller than 10cm, so that it can be easily manipulated by the patient.

[0227] The deformable part 66 includes a bellows 76 and a device 15 for securing the tooth retractor to the bracket 12.

[0228] Device 15 consists of two magnets 78 for engaging with two corresponding metal inserts rigidly fixed to the tooth retractor. Other devices 15 are possible, particularly the aforementioned fastening devices for image acquisition devices. Preferably, once the tooth retractor is fastened to the bracket 12, device 15 does not allow any substantial modification to the position of the tooth retractor.

[0229] The bellows 76 has four sections, one of which corresponds to the corresponding fold line 80 on the outside of the bellows 76.

[0230] The rigid portion 64 and the deformable portion 66 together define the chamber 20. In the lateral direction, the chamber 20 is defined by a sidewall 30, which is partially defined by the rigid portion 64 and partially by the deformable portion 66.

[0231] In a preferred embodiment, at least in the collapse configuration, the bellows 66 is partially (e.g.) Figure 9f The cross-section shown in AA) is either completely contained within the tube 70. This tube advantageously protects the bellows.

[0232] In one embodiment, the bellows 76 further defines an access opening. In this case, the intermediate opening 72 is confused with the access opening 26.

[0233] The bellows 76 can be rigidly fixed to the rigid portion, particularly along the edge defining the intermediate opening 72. It can also be slidably mounted to the rigid portion, allowing it to move along the axis of the tube 70. This embodiment provides protection for the bellows with maximum extension.

[0234] In a less preferred embodiment, the bellows 76 passes through the pipe 70 and protrudes on both sides of the pipe 70. In this case, fixing devices 15 and 18 must be provided on the bellows.

[0235] Preferably, the image acquisition device, particularly a mobile phone, has a procedure for guiding the patient toward one or more predetermined acquisition conditions and / or positioning the optical axis of the image acquisition device relative to the retractor opening at a predetermined position. This procedure preferably uses an artificial neural network.

[0236] According to the third improvement, at least a portion of the support, preferably the sidewall, is at least partially, preferably entirely, made of a material that can be degraded by composting and / or biodegradation, preferably according to European standard EN 13432, preferably with a residual content of less than 10% within 6 months, preferably less than 5%, preferably less than 1%.

[0237] Preferably, the scaffold is made of a fibrous material, more preferably a cellulose material (paperboard or paper). This advantageously limits the environmental impact of the scaffold.

[0238] Preferably, the weight of the stent is greater than 5g and / or less than 100g. Therefore, the environmental impact of transporting the stent is limited.

[0239] manufacturing

[0240] The manufacture of the imaging device according to the invention, particularly the device according to the first, second and / or third improvements of the invention, and the optional tooth retractor, is preferably achieved from the precursor of the bracket, especially when the imaging device is to be manufactured, for example, less than one month, less than two weeks, less than one week or less than one day before patient use.

[0241] "Precursor to stent" is one or more components, or "(one or more) precursor components" which can be converted by the operator to obtain a stent.

[0242] In one embodiment, the precursor of the support and, optionally, the precursor of the tooth retractor, are manufactured at a first location and provided to the operator at a second location remote from the first location, the distance between the first and second locations preferably being greater than 1 km and / or less than 20,000 km.

[0243] The precursor is then transformed into the support, and optionally into the retractor.

[0244] The operator is preferably the patient, orthodontist, or dentist, with the patient being the preferred candidate.

[0245] Without a precursor, obtaining images typically requires a meeting between the patient and orthodontist to receive the imaging device, which can be uncomfortable for the patient. Alternatively, the imaging device could be sent to the patient, but this would incur significant costs.

[0246] In one embodiment, the precursor includes a precursor component: - The shape of the precursor components is altered to facilitate the manufacture of the support structure, particularly through folding and / or bending, and / or - At least one dimension of the precursor component is altered for the manufacture of the support, particularly by cutting (e.g., with scissors) or tearing, and / or - The precursor component needs to be assembled to at least one other component used to manufacture the bracket, in particular by gluing and / or sewing and / or clamping and / or fastening Velcro® type ring and hook fasteners and / or inserting the tabs of the precursor component into the corresponding slots of the other precursor component (or vice versa).

[0247] The precursor component preferably has plastic behavior, such that the new shape resulting from the folding and / or bending is stable. Preferably, the new shape is reinforced, for example, by bonding and / or sewing and / or clamping a first region of the precursor component to a second region of the precursor component or another precursor component, and / or by inserting tabs from the first region into corresponding grooves in the second region.

[0248] Preferably, the precursor component includes assembly information to facilitate the manufacture of the support. The assembly information may specifically include: - Text, such as for listing the operations required for manufacturing and / or providing a hotline number, and / or - Visual markers, such as arrows, warning signs, and geometric shapes, for example, used to indicate where to glue or areas to be assembled. - Folding line, i.e., the line along which the operator will fold the preceding body component, and / or - Tearable weakening line, i.e., the line along which the operator will tear the precursor component, and / or - Cutting line, which is the line along which the operator will cut the precursor part.

[0249] Manufacturing instructions are preferably included in a manual and provided to the operator in digital form, such as video or paper.

[0250] The precursor component may in particular have the shape of a sheet. The thickness of the sheet is preferably less than 6 mm, preferably less than 5 mm, preferably less than 4 mm, preferably less than 3 mm, and / or greater than 0.5 mm, preferably greater than 1 mm.

[0251] Preferably, the precursor component is a cellulose material, more preferably paper or paperboard, especially when it has a sheet shape.

[0252] In one implementation, particularly when the precursor has the shape of one or more sheets, the precursor is provided to the operator by mail, preferably after being packaged in an envelope.

[0253] In order to manufacture at least a portion of the support from the precursor component having a sheet shape, the operator preferably cuts the precursor component along the cut line, and / or folds the precursor component along the fold line, and / or tears the precursor component along the weakening line, and / or secures different portions of the precursor component to each other and / or to other precursor components by inserting tabs or lugs into corresponding slots or by using glue or staples or clips or Velcro® type ring and hook fasteners.

[0254] In a preferred embodiment, the support is formed from one or more sheets of cardboard or paper, optionally using glue, but preferably without glue, such as by folding paper. These sheets are referred to as "precursor sheets".

[0255] In a preferred embodiment, one or more precursor sheets are also used to form the tooth retractor. The tooth retractor is preferably integral with the framework.

[0256] In one embodiment, the precursor includes one or more sheets of cardboard to be cut by a cutting machine (e.g., a laser cutter).

[0257] The cutting machine can be the property of the operator. Cardboard sheets can be sent to the operator by mail, or the operator can purchase the cardboard sheets locally.

[0258] Cutting machines and cardboard sheets are also available near the operator's location, such as in a manufacturing laboratory.

[0259] Preferably, the documents are provided to the operator via the Internet or email to control the cutter to transform the cardboard sheet into a support. The document format is suitable for the cutter.

[0260] Documents and cardboard sheets can be loaded into the cutter by an operator or other person. The cutter is then operated to manufacture a bracket or part of a bracket, and preferably to manufacture a tooth retractor.

[0261] In one embodiment, the precursor includes raw materials for 3D printers, such as plastic granules.

[0262] The 3D printer can be the property of the operator. Raw materials can be sent to the operator by mail, or the operator can purchase the materials locally.

[0263] 3D printers and raw materials can also be obtained near the operator's location, such as in a manufacturing lab.

[0264] The file is preferably provided to the operator via the internet or email to control the 3D printer to transform the raw material into a support. The file format is suitable for the printer. In particular, the file can be in STL, OBJ, AMF, or 3MF format.

[0265] The documents and materials can be loaded into the 3D printer by the operator or another person. The 3D printer is then operated to manufacture the bracket or a component of the bracket, and preferably to manufacture a tooth retractor.

[0266] The following 3D printing methods are well known: «SLM®» (Selective Laser Melting), «DMLS» (Direct Metal Laser Sintering), «PS» (Powder Sintering), Infrared Sintering, «SLS®» (Selective Laser Sintering), «ALM» (Additive Layer Manufacturing), «CLAD» (Architectural Laser Additive Direct), «LFFM» (Laser Freeform Manufacturing), EBM (Electron Beam Melting) from ARCAM GmbH (Sweden), and laser Cusing, UAM (Ultrasonic Additive Manufacturing), or LENS (Laser Engineering Net Shape) from Concept Laser GmbH (Germany).

[0267] In one implementation, the framework and optional tooth retractor components are provided to the operator by the orthodontist, and / or sent to the operator by mail, preferably after being sealed in an envelope.

[0268] The operator then assembles the components manually or using tools, optionally using components he himself manufactured from the precursor.

[0269] In one embodiment, the bracket or bracket component having the first shape is provided to the operator, for example by an orthodontist, and / or sent to the operator by mail, preferably after being sealed in an envelope.

[0270] The operator then manually or using tools transforms the bracket or component to give it the second shape. The first shape is preferably more compact than the second shape.

[0271] Specifically, the first shape can be in a collapsed configuration. The operator can extend the support to a fully extended configuration or an intermediate configuration.

[0272] Imaging kit

[0273] The imaging kit according to the invention includes an imaging device and an image acquisition apparatus 19 according to the invention.

[0274] The image acquisition device 19 preferably provides color images and / or infrared images. Infrared images advantageously enable observation of teeth with excellent contrast levels.

[0275] Preferably, the image acquisition device 19 is a common personal device on the market, such as a mobile phone, a "connected" camera, a smartwatch, a tablet computer, or a fixed or portable personal computer that includes an image acquisition system, such as a webcam or camera, preferably a digital camera. Its weight is preferably less than 3 kg, less than 2 kg, less than 1 kg, less than 500 g, and more preferably less than 300 g.

[0276] The image acquisition device 19 can be integrated into the bracket 12, or preferably temporarily fastened to the bracket 12 by means of the fastening device 18 of the acquisition device.

[0277] In a preferred embodiment, the image acquisition device includes a processing module 59 configured to guide the operator during the imaging operation, specifically to enable him or her to properly adjust the length of the support 12 and / or to properly position his or her mouth on the tooth retractor 14.

[0278] In a preferred embodiment, the imaging device includes a detection component 70 that can be detected by the detector 72 of the image acquisition device. Figure 5a ).

[0279] Preferably, the detection element 70 and detector 72 are configured such that detection is only possible when the imaging device is in close proximity to the image acquisition device. Therefore, advantageously, the image acquisition device will not react when the imaging device is far from the image acquisition device. However, preferably, the detection element 70 and detector 72 are configured such that remote detection is possible, preferably at a distance greater than 5 cm or even greater than 10 cm. Therefore, advantageously, the image acquisition device can react very quickly.

[0280] The position of the detection component on the support is not restricted. However, preferably, it is located less than 5 cm, more preferably less than 3 cm, and more preferably less than 2 cm from the edge of the acquisition opening. Therefore, advantageously, the acquisition device is only detected when it is close to the acquisition opening.

[0281] In a preferred embodiment, the detection element is a magnet, and the detector 72 of the image acquisition device includes a magnetometer. The magnetometer is capable of detecting changes in the magnetic field around it, and therefore can detect the approach of the magnet.

[0282] Since mobile phones are usually equipped with magnetometers, the image acquisition device is preferably a mobile phone.

[0283] The detector 72 is configured to control the processing module 59 based on the detection of the detection component 70.

[0284] In a preferred embodiment, upon detection of the detection element 70, the detector 72 triggers the execution of a computer program loaded on the processing module 59. Therefore, it is sufficient for the operator to bring the image acquisition device (preferably a mobile phone) close to the support to be guided during his or her image acquisition operation. This implementation advantageously allows operators without prior training to acquire images.

[0285] Preferably, the image acquisition device sends a message in response to the detector 72 detecting the detection member 70. This message is preferably related to the use of the imaging device. Preferably, the image acquisition device is configured to send messages related to the fastening of the acquisition device (e.g., via the voice message "Place your camera on the blue surface of the bracket"), and / or to send messages related to the fastening of a tooth retractor (e.g., via the voice message "Bend the tooth retractor to fasten it to the green tab"), and / or to send messages related to the timing of updated images to be acquired (e.g., via the voice message "Take three photos and send them to your orthodontist").

[0286] The information may be purely informational. However, in a preferred embodiment, the message sent by the image acquisition device depends on the interaction between the operator and the image acquisition device. For example, the image acquisition device may send messages such as "camera inverted / reversed," "camera not properly oriented," or "your lips are not properly positioned in the retractor channel."

[0287] Therefore, detecting components and detectors helps to obtain updated images.

[0288] Preferably, the detector 72 and / or the detection element 70 also serve to secure the image acquisition device to the support. In particular, the detection element 70 is preferably a magnet 18. Using a magnet that serves both for detection and for securing the image acquisition device is advantageously simple, inexpensive, and very practical.

[0289] operate

[0290] The operation of the kit can be directly seen from the description above.

[0291] right Figure 7 The embodiments shown are described.

[0292] Initially, the metal plate 32 is preferably fastened to the image acquisition device 19, in this case, under the protective case of the mobile phone.

[0293] Once the operator brings the image acquisition device 19 close to the acquisition opening 26, the metal plate 32 is attracted by magnets 181 and 182 and engages with these magnets to secure the image acquisition device in a predetermined position suitable for acquiring updated images according to predetermined frames. Specifically, in this position, the objective lens of the image acquisition device is correctly positioned relative to the acquisition opening, preferably substantially at the center of the acquisition opening, and observes the interior of the observation chamber 20, in which the image acquisition device 19 can observe both direct and reflected images.

[0294] Preferably, the mobile phone has a rear camera, i.e., a camera on the side of the mobile phone opposite to the mobile phone's display screen, and the mobile phone is secured to the bracket so that the rear camera receives an image of the puller opening.

[0295] Therefore, the scene observed through the rear camera appears on the phone's display screen, which faces outwards from the device. Thus, if the operator is facing a mirror, they can advantageously see the scene and optimize the phone's viewing angle and / or distance to obtain an image that suits their needs.

[0296] Furthermore, upon approaching the stent, at least one of the stent's magnets 181 and 182 is detected by the magnetometer of detector 72.

[0297] Therefore, the magnetometer automatically starts (i.e. without operator intervention) the computer program loaded on the processing module 59 to guide the operator in operation.

[0298] If the box is retractable, the operator then adjusts the position of the concave portion relative to the convex portion 12a along the X axis according to the image acquisition device 19 and its settings.

[0299] The scale arranged on the convex portion 12a of the bracket, with markings for each type of image acquisition device, facilitates this adjustment.

[0300] Preferably, the operator turns on the light source 51 to illuminate the teeth and project a reference frame, in particular a laser grid, onto the teeth.

[0301] The operator also secures the tooth retractor to the support. In one illustrated embodiment, he or she inserts the first protrusion of the right and left tabs respectively behind the first hook of the right and left hooks, and then slightly bends the tooth retractor to allow the second protrusion to be inserted behind the second hook. When the operator releases his or her action, the tooth retractor attempts to return to its initial shape, but this return to the initial shape is hindered by the hooks. The resulting pressure of the tooth retractor on the support ensures that the tooth retractor remains in the proper position behind the hooks.

[0302] Preferably, the processing module 59 is configured to control the automatic acquisition of one or more updated images and analyze them to detect any incorrect positioning and / or poor lighting and / or inappropriate support length of the image acquisition device and / or dental retractor. More preferably, the image acquisition device immediately notifies its operator so that he or she can correct the detected defects.

[0303] Therefore, the device according to the invention enables the image acquisition apparatus to be positioned relative to the unfolded opening, and thus facilitates the acquisition of updated images. It allows for the acquisition of high-quality updated images, particularly images that are substantially the same size, framed in the same manner, and appropriately sharp. Therefore, the invention facilitates the later analysis of the updated images.

[0304] The patient (or operator) then places his or her lips into the channel defined by the edge 34 of the tooth retractor. (As...) Figure 3 As shown, the patient's teeth are clearly visible. The closed box effectively conceals the teeth, thus protecting the patient's privacy.

[0305] Then, with the device in the working position, image acquisition device 19 views... Figure 3 Synthetic image I of the type shown c In this figure, the composite image includes the direct image I. d and eight reflected images I reflected by the various mirrors 16 located in chamber 20 r .

[0306] The operator acquires the composite image I by actuating the trigger of the acquisition device. c Advantageously, such as Figure 3 As in the implementation method, he or she simultaneously acquires the front view (direct image I). d ) and a set of oblique views (reflected images I) r Of course, the reflected image is inverted relative to reality. For example, in the direct image I... d In the reflected image above, the upper dental arch is shown below the lower dental arch.

[0307] Reflected images can advantageously correspond to acquisition conditions where the optical axis of the acquisition device is strongly tilted relative to the sagittal plane. Direct observation using the acquisition device under these conditions (i.e., without a mirror) is often difficult for the patient.

[0308] The composite image is then sent to the processing module 59 via wired or wireless means, such as via Wi-Fi or Bluetooth®.

[0309] According to conventional processing methods, image processing in particular enables the separation of a direct image and one or more reflected images. In one embodiment, the processing operations also include operations to invert the reflected image and / or correct perspective effects and / or correct colors via colorimetric calibration diagram 34.

[0310] Analyzing either the direct image or the reflected image, preferably the direct image, allows the acquisition conditions of the image to be determined, preferably according to the teachings of PCT / EP2015 / 074896, which is incorporated herein by reference in PCT / EP2016 / 078896. The acquisition conditions of the other images can be advantageously inferred simply by considering the geometry of the support 12. In particular, the calibration of the acquisition device is the same for all direct and reflected images. Furthermore, the simple geometric considerations allow the determination of the position and orientation of the acquisition device in space, which, in the absence of a mirror, will allow the acquisition device to acquire reflected images.

[0311] In one embodiment, a processing module 59 preferably integrated within the image acquisition device 19 controls the acquisition of multiple composite images under different acquisition conditions, particularly at different focal lengths. For example, the first, second, and third composite images can be acquired by sequentially focusing the acquisition device on the incisors, premolars, and molars. Thus, advantageously, each tooth is clearly shown in at least one composite image.

[0312] In one implementation, capturing multiple consecutive images under different acquisition conditions is the result of a single actuation of a trigger on the image acquisition device. Specifically, the image acquisition device can be configured to capture multiple images consecutively at different focal lengths as a result of a single triggering action.

[0313] In addition, the acquisition device preferably acquires an image of the patient's teeth, which also displays a translucent calibration map and a colorimetric calibration map.

[0314] The processing module 59, having learned the true color and translucency properties of the calibration map, then corrects the image until the representation of the calibration map in the image has these properties.

[0315] To ensure accurate calibration, it is preferable to adjust the light source 51 so that the calibration map is illuminated under conditions identical to those used to measure the actual characteristics when acquiring the image. Using a closed box makes it easier to control the illumination.

[0316] Therefore, all images acquired by the acquisition device are advantageously comparable, regardless of the external lighting environment at the time of acquisition.

[0317] As is now clearly visible, the present invention significantly facilitates the analysis of updated images.

[0318] The first major improvement in the device advantageously allows for the very rapid acquisition of multiple images, typically in less than a minute, without the need for assistance from a specialist, particularly a dentist or orthodontist. The images can be acquired, in particular, by the patient or their family using a simple mobile phone anywhere, especially outside of any medical, dental, or orthodontic facility.

[0319] Furthermore, if the geometry of the support, particularly the orientation and positioning of the mirror, is known, it is sufficient to determine the conditions for acquiring the direct image, so that the conditions for acquiring the image reflected by the mirror can be determined through simple calculations. Therefore, the implementation of the method described in PCT / EP2015 / 074896 is significantly accelerated.

[0320] Finally, since the acquisition device 19 is fixed relative to the teeth, the synthesized image is advantageously sharp and exhibits good contrast if the device includes a controlled light source.

[0321] The second major improvement in the device makes it possible to track changes in the appearance characteristics of teeth. It also allows patients to accurately measure these characteristics themselves at any time, especially shortly before the prosthesis is made. Therefore, the appearance of the prosthesis will closely resemble that of the patient's teeth.

[0322] The third major improvement to the device helps control lighting during the acquisition of updated images and allows for the protection of patient privacy.

[0323] The kit according to the invention significantly facilitates the use of the imaging device according to the invention. In particular, in a preferred embodiment, it enables automatic guidance for the user. This advantageously improves the quality of updated images.

[0324] Of course, the present invention is not limited to the embodiments described and shown, which are provided for illustrative purposes only.

[0325] In particular, the shape of the box is not restricted.

[0326] Furthermore, although this embodiment is not preferred, the image acquisition device can be secured by one or more magnets secured to the image acquisition device and one or more metal parts secured to the bracket.

[0327] The metal components of the device for securing the image acquisition apparatus can also be at least partially replaced by magnets arranged to attract and secure the magnets to the support.

[0328] A mirror does not necessarily have to be flat. It can be configured in particular to compensate for perspective effects and / or reflect specific areas of the mouth.

[0329] The mirror can be movable relative to the support, and in particular, it can be translated, especially to enable modification of the distance between the mirror and the retractor opening and / or the acquisition opening.

[0330] The mirror can also be rotatably moved, especially about an axis of rotation perpendicular to the tooth retractor X. When two planes orthogonal to the two axes are perpendicular to each other, the two axes are said to be perpendicular.

[0331] Preferably, the image acquisition device includes an application configured to guide the operator in correctly positioning and orienting the mirror. In one embodiment, the positioning and / or orienting of the mirror is achieved via a scale with indications associated with various acquisition devices. Therefore, the operator can easily position the mirror according to the acquisition device used.

[0332] In one embodiment, the device includes one or more actuators adapted to adjust the length of the support and / or the positioning and / or orientation of the mirror according to a set point, preferably a set point received from the image acquisition device 19.

[0333] In one embodiment, the device further includes one or more sensors configured to measure the length of the support 12 and / or the positioning and / or orientation of the mirror, and a transmitter capable of transmitting the measurements to an image acquisition device. Advantageously, the device can be optimized by controlling the actuator according to a setpoint preferably provided by the image acquisition device, which is preferably based on an image observed by the image acquisition device and / or measurements performed by the sensors.

[0334] Furthermore, the number of mirrors is not limited; multiple mirrors, preferably all mirrors, preferably have one or more of the preferred features of the aforementioned mirror 16. In particular, as described above, one or more mirrors may be equipped with sensors, actuators, and means for communicating with the image acquisition device.

Claims

1. An imaging device, comprising: - Stand; - A tooth retractor, wherein the tooth retractor is integrally formed with the bracket and defines the opening of the retractor; - A means for securing the image acquisition device to the bracket at a position where the image acquisition device is oriented to receive an image from the opening of the retractor; and - Light source; The support has a sidewall that defines a chamber communicating with the outside via the retractor opening and the acquisition opening. The image acquisition device fastened to the support receives at least one image from the retractor opening through the acquisition opening. The scaffold includes at least a degradable portion that is degradable through composting and / or biodegradable.

2. The imaging device according to claim 1, wherein, By weight percentage, more than 50% of the stent is biodegradable.

3. The imaging device according to claim 1 or 2, wherein, The biodegradable portion is made of fibrous cellulose material, preferably cardboard.

4. The imaging device according to any one of claims 1 to 3, wherein, The light source is oriented toward the opening of the retractor so as to illuminate the patient's teeth through the opening of the retractor.

5. The imaging device according to any one of claims 1 to 4, wherein, The light source emits white light, monochromatic light, infrared radiation, or ultraviolet radiation.

6. The imaging apparatus according to any one of claims 1 to 5, wherein, The support includes a rigid part and a deformable part.

7. The imaging device according to claim 6, wherein, The rigid portion has a tubular shape.

8. The imaging apparatus according to any one of claims 1 to 7, wherein, The degradable portion is included in the sidewall, or includes the sidewall or the sidewall itself.

9. The imaging apparatus according to any one of claims 1 to 8, wherein, The sidewalls are extendable and / or collapsible.

10. The imaging apparatus according to any one of claims 1 to 9, wherein, The support carries guidance information and / or advertising information for guiding patients during image acquisition.

11. The imaging apparatus according to any one of claims 1 to 10, wherein, The biodegradable portion of the scaffold is made from a precursor, preferably the scaffold is made from a precursor that is a fibrous material and has the shape of at least one sheet, the sheet having a thickness of less than 6 mm and greater than 0.5 mm, the precursor preferably having fold lines and / or cut lines, and / or including tearable weakening lines.

12. A kit comprising an imaging device according to any one of claims 1-11, the kit comprising an image acquisition device, the image acquisition device being fastened to the support at a position where the image acquisition device is oriented to receive an image of a patient's teeth through the retractor opening, preferably rigidly fastened to the support.

13. The kit according to claim 12, wherein, The image acquisition device is fastened by a fastening device selected from the group consisting of: clip fasteners, self-gripping straps, grippers, screws, magnets, caps, complementary shapes between the bracket and the image acquisition device, and elastic members.

Images