FR3090159A1 - DEVICE FOR CAPTURE AND AUTONOMOUS TRANSMISSION, BY A USER, OF INTRABUCCAL IMAGES OF HIS OWN MOUTH - Google Patents

Abstract

DEVICE FOR CAPTURE AND AUTONOMOUS TRANSMISSION, BY A USER, OF INTRABUAL IMAGES OF HIS OWN MOUTH The device (10) for autonomous capture and transmission, by a user, of intraoral images of his own mouth, comprises a waterproof portable case ( 11) provided with an autonomous energy source (20). The housing comprises: - a head (14) provided, on a first face (26), with a light source (22) and an optical window (16) with a sensor of a sequence of images, - a handle (15) and - a handle (13) connecting the handle to the head. The handle and the head have a mirror-spreader shape, the first face of the head having a larger dimension, measured perpendicular to the main axis of the housing, greater than or equal to two centimeters and a face opposite (28) to the first face forming, with the first face, a distal angle of the acute head, the handle having a section perpendicular to its central axis smaller than said dimension of the head and a curvature whose radius is between 20 cm and 60 cm, preferably between 40 and 60 cm. The housing includes: - a memory (17) for storing at least the image captured by the image sensor and - a wireless transmitter (19) for transmitting images to a communicating terminal (24). Figure for the abstract: Figure 1

Description

Description

Title of the invention: AUTONOMOUS CAPTURE AND TRANSMISSION DEVICE, BY A USER, OF INTRABUCCAL IMAGES OF ITS OWN MOUTH Technical field

The present invention relates to an autonomous portable device for capturing and transmitting intraoral images. It applies, in particular, to communication between a patient and a dental surgeon or a healthcare professional specializing in the oral-oral sphere.

Prior art

Document CN105286767 is known, which presents a device for cleaning teeth, which includes a wireless camera on a working head or a control handle for removing tartar. This device wirelessly transmits the video data collected by the camera in real time. The mobile display control terminal displays in real time the state of cleaning of the oral cavity on the corresponding mobile display control terminal. This device allows the user to self-inspect the cleaning status of his teeth.

However, this device does not allow a quality image to be taken, nor the obtaining of a third party opinion on the health of the dentition.

In addition, this type of device has poor ergonomics and a geometry unsuitable for insertion into the oral cavity.

Summary of the invention

The present invention aims to remedy all or part of these drawbacks.

To this end, according to a first aspect, the present invention relates to a device for the autonomous capture and transmission, by a user, of intraoral images of his own mouth, which comprises a waterproof portable housing provided with a source of autonomous energy comprising:

[0007] - a head provided, on a first face, with a light source and an optical window with a sensor of an image sequence,

- a handful and

- A handle connecting the handle to the head;

In which:

- The handle and the head have a shape of mirror-spacer, the first face of the head having a larger dimension, measured perpendicular to the main axis of the housing, greater than or equal to two centimeters and a face opposite to the first face forming, with the first face, a distal angle of the acute head, the handle having a section perpendicular to its central axis smaller than said dimension of the head and a curvature whose radius is between 20 cm and 60 cm , preferably between 40 and 60 cm;

The housing comprising:

- a memory for keeping at least the image captured by the image sensor and

- a wireless transmitter for transmitting to a communicating terminal:

O a sequence of images captured by the image sensor, according to a first protocol corresponding to a first resolution of transmitted images and to a first number of images transmitted per second,

O when a trigger is actuated, at least one image kept in memory according to a second protocol corresponding to a second resolution of transmitted images, greater than the first resolution and to a second number of images transmitted per second less than first number of images transmitted per second.

Thanks to the mirror-retractor shape of the head and the handle of the case, the soft tissues of the oral cavity are separated from the shooting area, without injury.

In addition, a display screen of the communicating terminal (mobile phone, smartphone, tablet, computer or television) can:

- display the sequence of captured images, for example a real-time video stream and,

- when an image of interest has been identified, by the user or a computer program activating the trigger, receive, display, store and transmit this image of interest.

An image of interest is an image considered to be relevant for evaluating the health of its teeth or their appearance. The user or a dedicated program can thus study each image of interest, in high resolution, and evaluate or have evaluated, by a third party, dental surgeon or automatic service, the need to consult a doctor, in particular a dental surgeon or a healthcare professional specializing in the oral-oral sphere.

In embodiments, the device comprises means for analyzing at least one image captured by the image sensor, configured to detect a dental anomaly as a function of at least one color, a surface appearance , an outline.

Thanks to these provisions, either in the housing, or in the communicating terminal, or in a server remote from the housing and the communicating terminal, the oral health of the user is evaluated. We can then offer a consultation or an appointment to the user. It should be noted that the anomaly of color, surface appearance or outline can be detected both on a tooth and on soft intraoral tissue, gum, tongue or cheek.

In embodiments, the analysis means implements an artificial intelligence based at least on images captured with a device similar to the device object of the invention and at least one classification carried out by a human operator.

In embodiments, the trigger is actuated at least by the analysis means.

Triggering can thus be automatic.

In embodiments, the trigger includes a manual trigger positioned on the handle or the handle of the housing.

The user can thus choose the image which seems to him best representative of a particular tooth, for example a painful tooth.

In embodiments, the light source is configured to emit polarized light and the image sensor is provided with a polarizing filter configured to filter the light rays emitted by the light source in reflection on the surface teeth.

Thanks to these provisions, the reflections on the surface of the teeth are eliminated, so that the images captured by the image sensor have limited contrast and represent a larger part of the tooth, in particular the parts of the tooth. where are these reflections.

In embodiments, the head and / or the handle of the housing has a rounded geometric shape configured to spread soft tissue such as the cheeks and the tongue.

Thanks to these provisions, these soft tissues are spread without alteration, so that the captured images represent a larger part of the oral cavity, without injury can occur.

In embodiments, the handle has a curvature whose radius is between 40 and 60 cm.

Thanks to these provisions, the handle substantially follows the movement of introduction of the housing by spreading the cheek, and the curvature of the dentition and limits the grip of the housing between the teeth and the soft tissues, in particular the cheeks.

In embodiments, the handle has an oblong volume whose largest dimension is between 6 cm and 12 cm and the largest perimeter is between 7 cm and 14 cm.

Thanks to these provisions, the gripping of the handle against the palm of a partially closed hand is facilitated.

According to a second aspect, the present invention relates to a method of capture and autonomous transmission, by a user, of intraoral images of his own mouth, which comprises:

- A step of introducing, into the mouth of the user, the head of a waterproof portable housing provided with an autonomous energy source comprising the head provided, on a first face, with a source light and an optical window of a sensor of a sequence of images, a handle and a handle connecting the handle to the head; the handle and the head having the shape of a mirror-spacer, the first face of the head having a larger dimension, measured perpendicular to the main axis of the housing, greater than or equal to two centimeters and a face opposite to the first face forming , with the first face, a distal angle of the acute head, the handle having a section perpendicular to its central axis smaller than said dimension of the head and a curvature whose radius is between 20 cm and 60 cm, preferably between 40 and 60 cm,

- A first step of transmitting to a communicating terminal, a sequence of images captured by an intraoral image sensor, according to a first protocol corresponding to a first resolution of transmitted images and to a first number of images transmitted per second,

- a triggering step,

- a step of memorizing at least one image captured by the intraoral image sensor and

- A second step of transmitting to the communicating terminal at least one stored image, according to a second protocol corresponding to a second resolution of transmitted images, greater than the first resolution and a second number of images transmitted per second less than the first number of images transmitted per second.

The advantages, aims and particular characteristics of this process being similar to those of the device which is the subject of the invention, they are not repeated here.

Brief description of the drawings

Other advantages, aims and characteristics of the invention will appear on reading the description which follows, given solely by way of example, and with reference to the appended figures in which:

[Fig.l]

FIG. 1 schematically represents a section of a first embodiment of a device which is the subject of the invention,

[Fig.2]

FIG. 2 schematically represents, in front view, the first embodiment illustrated in FIG. 1,

[Fig.3]

FIG. 3 represents, in the form of a flow diagram, steps of a first embodiment of the method which is the subject of the invention,

[Fig.4]

FIG. 4 represents, in the form of a flow diagram, steps of image analysis to detect an anomaly and

[0047]

[fig-5]

FIG. 5 represents, in the form of a flow diagram, steps of a second embodiment of the method which is the subject of the invention.

Description of the embodiments

We note, as of now, that the figures are not to scale.

We observe, in Figures 1 and 2, a device 10 for autonomous capture and transmission, by a user, of intraoral images of his own mouth. The device 10 comprises a waterproof portable housing 11 provided with an autonomous energy source 20. The housing 11 comprises:

a head 14 provided, on a first face 26, with a light source 22 and an optical window with a sensor 16 of image sequences, a handle 15 provided, in this embodiment, with a trigger manual 21 and a handle 13 connecting the handle 15 to the head 14.

The handle 13 and the head 14 have a form of mirror-spacer, the first face 26 of the head 14 having a larger dimension 27, measured perpendicular to the main axis of the housing 11 (see Figure 2), upper or equal to two centimeters and, preferably 2.5 cm. A face 28 of the head 14 opposite the first face 26 forms, with the first face 26, a distal angle of the acute head, preferably less than 75 degrees.

The handle 13 has a section 29, measured perpendicular to the central axis of the handle 13, smaller than the dimension 27 of the head 14 and a curvature of its central axis whose radius is between 20 cm and 60 cm , preferably between 40 and 60 cm.

The housing 11 comprises, in one or the other of these parts:

a memory 17 for storing at least the image captured by the image sensor 16 and a wireless transmitter 19, a processor 18, which controls the operation of the various components of the housing 11.

A closable hatch 23 gives access to the autonomous energy source 20, in particular in the variants where this energy source 20 consists of at least one electric battery. In other variants, the energy source 20 consists of an electric accumulator recharged by electric pads (not shown) accessible outside the housing 11 or an induction charger (not shown).

The processor 18 controls the transmitter 19 and the memory 17 so that the transmitter 19 transmits, from the activation of the housing 11, a signal representative of the sequence of images captured by the image sensor 16, according to a first protocol corresponding to a first resolution of transmitted images and to a first number of images transmitted per second. Typically, the first protocol combines a first image compression, for example MPEG (acronym for Moving Picture Experts Group for group of experts in animated images) and a communication protocol, for example Bluetooth or Wi-Fi (registered trademarks). For example, the first protocol uses the JPEG format to represent each image by less than 5 kilobytes.

The processor 18 controls the transmitter 19 and the memory 17 so that the transmitter 19 transmits, when a trigger is actuated, at least one image kept in memory according to a second protocol corresponding to a second resolution of transmitted images. , greater than the first resolution and a second number of images transmitted per second less than the first number of images transmitted per second.

The trigger can be the manual trigger 21 and / or a program implemented by the processor 18 of the housing 11, a processor (not shown) of the communicating terminal 24 and / or a processor of the server 25 (or a server not shown connected to server 25).

For example, the second protocol combines an absence of image compression or a lossless fixed image compression or, at least, with less loss than the first image compression, for example JPEG image compression (acronym for Joint Photography Experts Group for joint photographic expert group) or PNG (acronym for Portable Network Graphics for portable network graphics).

A communicating terminal 24, for example a communicating portable terminal (mobile phone, a smartphone (in English smartphone), a tablet), a computer or a television, provided with a screen can thus:

- display the sequence of captured images, for example a real-time video stream and,

- when an image of interest has been identified, by the user or a computer program actuating the trigger, receive, display, store and transmit this image of interest to a server 25 remote from the terminal 24.

An image of interest is an image considered to be relevant for evaluating the health of its teeth and soft tissues or their appearance. The user or a dedicated program can thus study each image of interest, in high resolution, and evaluate or have evaluated, by a third party, dental surgeon or automatic service, the need to consult a doctor, in particular this dental surgeon or a healthcare professional specializing in the oral-oral sphere.

Preferably, the device comprises means for analyzing at least one image captured by the image sensor, configured to detect a dental anomaly as a function of at least one color, a surface appearance, an outline. FIG. 4 shows different operations of such an analysis means.

The analysis means may in particular be a program implemented by the processor 18 of the housing 11, a processor (not shown) of the communicating terminal 24 and / or a processor of the server 25 (or of a server not shown) connected to the server 25). This program evaluates the oral-oral health of the user as a function of the images captured by the image sensor 16. When the analysis means is located outside the housing 11, it preferentially processes at least one image transmitted according to the second protocol, therefore of higher definition than the images transmitted according to the first protocol.

This means of analysis can, depending on the image processing results, offer the user a consultation or an appointment with a specialist, in particular a surgeon-doctor or a health professional specialized in the oro sphere. - buccal. It should be noted that the anomaly of color, surface appearance or outline can be detected both on a tooth and on soft intraoral tissue, gum, tongue or cheek.

According to the embodiments, the trigger is actuated at least by the analysis means and / or by the manual trigger 21 positioned on the handle or the handle of the housing. Note that the manual trigger 21 can be positioned, as in Figures 1 and 2, on the internal face of the housing 11, that is to say on the same side as the general concavity of the housing 11 or on its external face. In addition, depending on the shape of this housing 11, the manual trigger can be positioned on the handle 15 or in the part of the handle 13 closest to the handle 15. In both cases, the handle 15 is geometrically configured so that the manual trigger 21 is located under the user's thumb or forefinger.

In the embodiment illustrated in Figures 1 and 2, the light source 22 comprises four light emitting diodes positioned along each side of the optical window of the image sensor 16. Preferably, the light source 22 is configured to emit polarized light. For example, the light source 22 includes polarizing filters (not shown). The image sensor 16 is then provided with a polarizing filter (not shown) configured to filter the light rays emitted by the light source in reflection on the surface of the teeth. For example, polarizing filters achieve linear polarization and are crossed, that is, their axes of polarization are orthogonal. In another example, the polarizing filters achieve circular polarization and their quarter-wave plates rotate in opposite directions. Thus, the reflections on the surface of the teeth are eliminated, so that the images captured by the image sensor have limited contrast and represent a larger part of the tooth, in particular the parts of the tooth where these reflections are located.

The head 14 and / or the handle 13 of the housing 11 has a rounded geometric shape configured to separate the soft tissue such as the cheeks and the tongue. Thus, these soft tissues are spread without alteration, so that the captured images represent a larger part of the oral cavity, without injury can occur.

The handle 13, for example of a length of 5 to 9 cm, has a curvature whose radius is between 20 cm and 60 cm, preferably between 40 and 60 cm. Thus, the handle 13 substantially follows the movement of introduction of the housing 11 by spreading the cheek, and the curvature of the dentition and limits the grip of the housing 11 between the teeth and the soft tissues, in particular the cheeks.

In embodiments, the handle 15 has an oblong volume, the largest dimension (from left to right, in Figures 1 and 2) is between 6 cm and 12 cm and the largest perimeter (measured on a plane perpendicular to the largest dimension) is between 7 cm and 14 cm. Thanks to these provisions, it is easier to grip the handle against the palm of a partially closed hand.

As illustrated in Figure 3, in embodiments of the method of the invention, after starting the housing 11, step 30, the light source 22 is turned on, step 31 and the image sensor 16 provides a sequence of intraoral images, step 32, until the housing 11 stops operating, in particular when the head 14 is introduced into the user's mouth. The captured images are stored in memory 17, step 33, compressed to correspond to the speed of the wireless communication from the transmitter 19, step 34 and transmitted by the transmitter 19, step 35.

During a step 36, the communicating terminal 24 receives the compressed images and displays the received images, after decompression.

In the event of a manual or computer trigger, step 37, a stored image is transmitted to the communicating terminal 24, step 38, with a higher resolution than the images transmitted during step 35.

In a step 39, an image analysis is carried out (see FIG. 4) to detect visible anomalies on the teeth or the walls of the mouth. Step 39 can be carried out at the level of the unit 11, the communicating terminal 24 or the server 25. During a step 40, the results of the image analysis are displayed on the screen of the communicating terminal 24.

In the event that the image analysis processing has not been carried out at the level of the server 25, during a step 41, the high definition image and the results of the image analysis are transmitted to the server 25, with an identification of the user. This identification is given by the communicating terminal 24, on the basis of responses to a questionnaire during the installation of the communication application with the box 11.

Either immediately, depending on the results, or following processing by the server 25, possibly with the help of an operator, an appointment is made with the user, step 42 .

In variants, the image storage, step 33, is carried out only after triggering, step 37, in order to reduce the energy consumption of the box 11.

Thus, the method of capturing intraoral images comprises:

a first step 35 of transmitting a signal representative of a sequence of images captured by an intraoral image sensor, according to a first protocol corresponding to a first resolution of transmitted images and to a first number of transmitted images per second,

a step 37 of triggering,

a step 33 of memorizing at least one image captured by the intraoral image sensor and

a second step 38 of transmitting at least one stored image, according to a second protocol corresponding to a second resolution of transmitted images, greater than the first resolution and to a second number of images transmitted per second less than the first number d 'images transmitted per second.

In other embodiments, the device which is the subject of the invention comprises: [0077] an endo-oral (or intra-oral) camera, housing 11,

- an application of the communicating terminal, typically a smartphone 24

- a remote server 25 accessible by the internet network and

- a computer program or application on the server 25 (dental surgeon's office or desk).

The camera makes it possible to view the dentition of the user live on his smartphone and to capture fixed images of portions of the oral cavity (tooth, gum, tongue, inside of the cheeks, floor of the mouth, palate).

The smartphone application records the still images and adds them to a medical questionnaire. The set constitutes a file that the application transmits via the server to the dental surgeon's application desk.

The application desk allows the dental surgeon to read the transmitted file, view the images and respond to the message.

The smartphone application allows, thanks to an algorithm supported by the server, to automatically inform the user of any dental or gingival abnormalities that may require the consultation of a dental surgeon in order to diagnose and / or care. Embodiments of the device which is the subject of the invention have the following characteristics:

- the ergonomics of the camera head. The shape adopted for the case responds to the specific use of the case. The head containing the sensor has a "retracting mirror" shape allowing the soft anatomical elements (cheeks, tongue, floor of the mouth, lips) to be removed. This allows a better shot by having an action equivalent to that of the retracting mirror of the dental surgeon.

- The ergonomics of the camera handle (between the head and the handle). The slight curvature of this part allows better introduction into the mouth and gives access to all areas of the oral cavity.

- The transmission of the stream of captured images, between the camera and the smartphone, is carried out with significant compression of the video stream at the processor of the box. For example, according to the Bluetooth protocol, the flow is at most 100 kbits / second. Two types of images are transmitted. First, a low quality continuous video stream to view the live image on the smartphone. Second, high quality still images for processing and / or sending to the dentist.

- The pathology recognition algorithm is based on the recognition of color, surface and / or contour anomalies. The algorithm detects any non-smooth or sharp-edged colored structures at the teeth. It determines, at the soft tissue level, any clear and localized differences in color or appearance.

Preferably, the shell of the housing is made of hard plastic. Soft shapes, this shell is large enough to ensure a good grip. The main part, or handle, has, for example, a length of about 11 to 12 cm, a width and a height of about 4 cm. The handle contains the electronic card and the power supply.

The main part, or handle, is extended by the buccal insertion handle. 7.5 cm long, the handle ends with a head that contains the image sensor, optics and light source. The head is covered at its end with a shield. The handle is slightly convex, in the continuity of the curvature of the back of the main part, for a better oral insertion.

The shield allows to spread the soft tissue of the tongue, the floor of the mouth or the cheek. Located on the back of the handle at its end containing the sensor. Its specific shape makes it possible to take support on the soft tissues during the shooting and to keep them away from the sensor. Its effect is equivalent to that of the dental surgeon's spreader mirror.

The manual trigger button, located in front of the main part of the shell, is actuated by the user's finger. The manual shutter releases the camera by long press and then triggers the transmission of high-resolution images by short press.

All of the elements forming the shell are assembled so as to respect perfect sealing to protect the internal elements.

As illustrated in FIG. 4, to perform an image analysis, during a step 50, a high definition image is received, either directly from the image sensor, if the image processing is carried out in the box, either after transmission according to the second protocol, if the image processing is carried out by the communicating terminal or by a remote server.

In a step 51, the visible part of the mouth is determined at the center of the analyzed image. This step determines whether the main color in the center of the image is white or very light, in which case the visible to be analyzed is a tooth, textured regularly, in which case the visible part to be analyzed is the language, or neither, in which case the visible part to be analyzed is a cheek, the roof of the palate or the floor of the mouth.

The anomalies sought correspond to the part of the mouth to be analyzed which is identified. Optionally, the image areas that do not correspond to this part, tooth, tongue, cheek, palate or floor of the mouth, are excluded from the image to be analyzed. For this purpose, an extraction of contours is carried out and the parts beyond the contours of the central image part are excluded from the analysis.

The anomalies sought result from initial learning ("deep learning" for deep learning), on the basis of thousands of images captured by devices which are the subject of the invention and interpreted by dental surgeons or dental professionals. health specialists in the oral-oral sphere.

During a step 52, it is determined whether at least one area of the analyzed image part has an abnormal color, for example too light or too dark, or, for a tooth, gray, brown and / or very localized, sign of a cavity or a crack. To this end, a color segmentation is carried out and the colors corresponding to fillings or food or tartar residue are eliminated.

In a step 53, it is determined whether the texture of the surface of at least one area of the image part analyzed is abnormal, for example too marked compared to normal textures. We carry out a filtering and a detection of the contours to differentiate the cavities, which are anomalies, fillings, which are not.

In a step 54, it is determined whether the contour of at least one area of the analyzed image part is abnormal, for example, for a tooth, the contour in contact with the gum or opposite d another tooth.

In a step 55, it is determined whether a dental edge is abnormal, for example too sharp, a sign of a tooth breakage.

In a step 56, it is determined whether a line (internal contour) on the surface of a tooth corresponds to a crack

In general, each anomaly is evaluated or detected by a combination of color, shape, contour, etc. factors. Artificial intelligence processes images according to known techniques using this type of descriptor. Thus, the device analysis means implements an artificial intelligence based at least on images captured with a device similar to the device object of the invention and at least one classification carried out by a human operator.

As illustrated in FIG. 5, in embodiments of the method which is the subject of the invention, after starting the housing 11, step 30, the light source 22 is switched on, step 31 and the image sensor 16 provides a sequence of intraoral images, step 32, until the unit 11 stops operating. The captured images are stored in memory 17, step 33, compressed to correspond to the speed of the wireless communication from the transmitter 19, step 34 and transmitted by the transmitter 19 to the communicating terminal 25 and, through it, to a remote server, step 66.

In a step 66, an image analysis is performed (see FIG. 4) by the remote server 25, to evaluate visible anomalies on the teeth or the walls of the mouth. During a step 67, in the event of a positive evaluation of the presence of an anomaly, the remote server selects an image from the sequence of images received. For example, this selection corresponds to the image (or each image) of the area of interest (tooth, cheek, gum, ceiling or floor) where an anomaly has been detected and which presents the best sharpness of the compressed image. During this step 67, the remote server sends a request to the unit 11, via the communicating terminal 24. This request identifies the selected image, for example with an image number in the sequence of images or by a timestamp.

In a step 68, each selected high-definition image is read from the memory of the box and transmitted to the communicating terminal 24 and then to the server 25, step 69, with an identification of the user.

In a step 70, the remote server performs an image analysis on the high definition image received by the server 25 to detect anomalies, for example to confirm or invalidate the evaluation of the presence of anomalies performed during step 66, on the compressed images of the sequence of images.

The results of the image analysis are transmitted by the remote server 25 to the communicating terminal 24 and displayed on the screen of the communicating terminal 24 during a step 40.

Depending on the results, possibly with the help of an operator, an appointment is organized with the user, step 42.

Claims (1)

Claims [Claim 1] Device (10) for autonomous capture and transmission, by a user, of intraoral images of his own mouth, which comprises a waterproof portable housing (11) provided with an autonomous energy source (20), comprising: - a head (14) provided, on a first face (26), with a light source (22) and an optical window (16) with a sensor of an image sequence, - a handle (15) and - a handle (13) connecting the handle to the head; characterized in that: - the handle and the head have the shape of a mirror-spacer, the first face of the head having a larger dimension (27), measured perpendicular to the main axis of the housing, greater than or equal to two centimeters and an opposite face ( 28) on the first face forming, with the first face, an acute distal angle, the handle having a section (29) perpendicular to its central axis smaller than said dimension of the head and a curvature whose radius is between 20 cm and 60 cm, preferably between 40 and 60 cm, and in that the housing includes: - a memory (17) for storing at least the image captured by the image sensor and - a wireless transmitter (19) for transmitting to a communicating terminal (24): - a sequence of images captured by the image sensor, according to a first protocol corresponding to a first resolution of transmitted images and to a first number of images transmitted per second, - when a trigger (18, 21, 24 , 25) is actuated, at least one image kept in memory according to a second protocol corresponding to a second resolution of transmitted images, greater than the first resolution and to a second number of images transmitted per second less than the first number of images transmitted per second. [Claim 2] Device (10) according to claim 1, which comprises means for analyzing (18, 24, 25) of at least one image captured by the image sensor, configured to detect a dental anomaly according to at least one color, surface appearance, outline. [Claim 3] Device (10) according to claim 2, in which the analysis means (18, 24, 25) implements an artificial intelligence based at least on images captured with a device similar to the device according to claim 1 and at least one classification carried out by a human operator. [Claim 4] Device (10) according to one of claims 2 or 3, wherein the trigger is actuated at least by the analysis means (18, 24, 25). [Claim 5] Device (10) according to one of claims 1 to 4, in which the trigger comprises a manual trigger (21) positioned on the handle or the handle of the housing. [Claim 6] Device (10) according to one of claims 1 to 5, in which the light source (22) is configured to emit polarized light and the image sensor is provided with a polarizing filter configured to filter the emitted light rays by the light source in reflection on the surface of the teeth. [Claim 7] Device (10) according to one of claims 1 to 6, in which the head (14) and / or the handle (13) of the housing (11) has a rounded geometric shape configured to spread soft tissues such as the cheeks and language. [Claim 8] Device (10) according to one of claims 1 to 7, in which the handle (13) has a curvature whose radius is between 40 and 60 cm. [Claim 9] Device (10) according to one of claims 1 to 8, in which the handle (15) has an oblong volume, the largest dimension of which is between 6 cm and 12 cm and the largest perimeter of which is between 7 cm and 14 cm. [Claim 10] A method of capture and autonomous transmission, by a user, of intraoral images of his own mouth, characterized in that it comprises: - A step (32) of introducing, into the mouth of the user, the head (14) of a sealed portable housing (11) provided with an autonomous energy source (20), comprising the head provided , on a first face (26), of a light source (22) and of an optical window (16) of a sensor of a sequence of images, a handle (15) and a handle (13) connecting the handle to the head; the handle and the head having the shape of a spreading mirror, the first face of the head having a larger dimension (27), measured perpendicular to the main axis of the housing, greater than or equal to two centimeters and a face (28) opposite to the first face forming, with the first face, a distal angle of the acute head, the handle having a section (28) perpendicular to its central axis smaller than said dimension of the head and a curvature whose radius is between 20 cm and 60 cm, preferably between 40 and 60 cm, a first step (35, 65) of transmission to a communicating terminal, (24) of a sequence of images captured by an intraoral image sensor, according to a first protocol corresponding to a first resolution of transmitted images and to a first number of images transmitted per second, - a triggering step (37, 67), a step (33) of memorizing at least one image captured by the intraoral image sensor and - a second step (38, 68) of transmitting to the communicating terminal at least one stored image, according to a second protocol corresponding to a second resolution of transmitted images, greater than the first resolution and to a second number of transmitted images per second less than the first number of images transmitted per second.