Abstract: A dental instrument for use with a dental handpiece cleans and disinfects tooth root canals. The instrument includes a shaft and connector for releasable attachment to the handpiece, the shaft including at least a tip end, a distal portion approximate to the connector, and at least two radial protrusions extending along length of the shaft with a longitudinal groove extending between the at least two radial protrusions.

Abstract: A mask positioning assembly is provided. The mask positioning assembly includes a cradle frame, an adapter frame, and a positioning mask. The cradle frame is connected to both the adapter frame and the positioning mask. The adapter frame can be configured to be connected to any of positioning assembly support frames in different types of positioning systems. A positioning system is also provided.

Abstract: Disclosed herein is a measurement device capable of measuring distance to an object. The measurement device comprises an illumination optical system configured to emit irradiation light having a predetermined pattern onto an object through a first optical path and a second optical path different from each other, and an observation system configured to observe a first light source image projected onto the object through the first optical path and a second light source image projected onto the object through the second optical path. The illumination optical system is configured to focus light through the first optical path and light through the second optical path on predetermined positions in a plan view of the object viewed along a traveling direction of the irradiation light. The measurement device measures a distance to the object based on the first light source image and the second light source image observed by the observation system.

Abstract: A portable handheld system for imaging of a throat of a patient, including: a mouthpiece including at least one bite guide for stabilizing the mouthpiece with respect to teeth of the patient when the patient bites on the at least one bite guide; intraoral optics operable to collect light from the throat of the patient and to direct the light towards an imaging sensor; and an imaging sensor operable to capture light directed by the intraoral optics to provide an image of the throat; wherein a mechanical connection between the mouthpiece and the intraoral optics constrains a spatial relationship of the intraoral optics with respect to the mouthpiece so that when the patient bites on the at least one bite guide: the intraoral optics is stabilized by the mouthpiece inside a mouth of the patient having a FOV which includes at least part of a tonsil of the patient.

Abstract: A dental cleaning appliance includes a fluid reservoir for storing working fluid, a nozzle for delivering working fluid to the teeth of a user, a light source for illuminating the fluid reservoir and a control circuit for activating the light source to generate an alert which is conveyed to the user through the illumination of the fluid reservoir.

Abstract: An apparatus, method, system, and program product are disclosed for remote dentistry. One apparatus includes an information reception module of a diagnostic processing device that receives digital dental information. The apparatus includes an issue determination module that determines a dental related issue based on the digital dental information. The apparatus includes a treatment module that transmits treatment information for the dental related issue from the diagnostic processing device. At least a portion of the information reception module, the issue determination module, and the treatment module includes one or more of hardware and executable code. The executable code may be stored on one or more computer readable storage media.

Abstract: A teeth whitening system that emits electromagnetic radiation onto surfaces of a user's teeth and may also dispense a tooth whitening material for contact with the user's teeth. In one aspect, the teeth whitening system includes a mouthpiece comprising a wall and a bite platform extending from the wall that collectively define a first channel for receiving a user's teeth and an electromagnetic radiation source coupled to the mouthpiece and configured to emit electromagnetic radiation onto surfaces of the user's teeth that are positioned in the first channel. The teeth whitening system may also include an opening in the wall through which a tooth whitening material may be dispensed into the channel. The tooth whitening system may alternatively include apertures in the wall or bite platform through which a tooth whitening material can be dispensed.

Abstract: The present disclosure relates to a system, apparatus, or method for testing of pet products and their resulting impact on pets. Certain embodiments include collecting, at a server, data related to one or more teeth of a pet, where the data results from the testing of the pet product. Certain embodiments also include mapping, by the server, the data to a heatmap representation of the one or more teeth of the pet. The heatmap representation illustrates a statistical analysis of the data. In addition, certain embodiments determine based on the statistical analysis of the data illustrated in the heatmap representation an impact of the pet product on the one or more teeth of the pet.

Abstract: The invention relates to a mouthpiece and method for antibacterial treatment of intraoral surfaces. The mouthpiece comprises a body made of light-guiding material, the body comprising facial and lingual outer surfaces and facial and lingual inner surfaces adapted to face facial and lingual surfaces of teeth, respectively. A light source is attached to the body and adapted to deliver light to surfaces of teeth, the light source being positioned on at least one of said outer surfaces and adapted to deliver said light via said inner surfaces to both the facial and lingual surfaces of the teeth, wherein a portion of light is adapted to travel through said body from the facial side to the lingual side, or vice versa.

Abstract: The specification discloses a dental curing light including 1) a light engine, 2) a coaxially aligned, camera-based viewing system, and 3) a control system providing a variety of safety features and simplified, operator-friendly operation. The camera's field of view (FOV) is coaxial with the centerline of the curing beam of the light engine. The curing light includes a multi-planar dichroic mirror (MDM) providing viewing and light beam direction aligned with the target. The MDM provide multiple images to the camera from different angles. The camera provides real-time measurement of light intensity reflected back from the targeted surface. Using the multiple image portions reflected by the multi-planar dichroic mirror, the control system computes the distance between the curing light and the target. The reflected intensity and the calculated distance enable the control system to compute a light engine irradiance to achieve a desired irradiance at the targeted surface.

Abstract: The present invention relates to an illuminating instrument (1) for diagnostics, therapy or surgery of a body part, comprising: at least one optical fiber (4) for transmitting electromagnetic radiation directly from an electromagnetic radiation source (3) to the body part; and a housing (5) which supports the optical fiber (4); the optical axis of the light-output end of the optical fiber (4) circumferentially extends in an illumination portion (52a) in the housing (5) which is annular shaped and arranged to face the body part; the optical fiber (4) in the illumination portion (52a) has one or more diffusing regions (4a) for difusing the electromagnetic radiation to the outside of the optical fiber (4) through the circumferential surface (4b) thereof, a coupling device (2) which supports the electromagnetic radiation source (3) for generating the electromagnetic radiation, characterized by further comprising: a conversion means (6) which is supported by the housing (5) without directly contacting the electrom

Abstract: The present invention relates to an apparatus comprising an insertion member configured to be inserted to a user's mouth. The insertion member comprises one or more illumination sources, configured to illuminate a part of the user's mouth when inserted thereinto; one or more imaging devices configured to capture images of the user's mouth interior; and a processing module configured to receive images from the one or more imaging devices, process the images to data, and detect oral and/or dental anomalies from the processed images and send the processed images and data via wireless or wired connection to a physician or professional doctor for further analysis.

Abstract: A processing device receives a plurality of intraoral scans of a dental arch. The processing device determines, from the plurality of intraoral scans, a first set of intraoral scans that depict a restorative object and a second set of intraoral scans that fail to depict any restorative object. The processing device generates a multi-resolution three-dimensional model of the dental arch, wherein a first portion of the multi-resolution three-dimensional model is generated from the first set of intraoral scans, has a first resolution and represents the restorative object, and wherein a second portion of the multi-resolution three-dimensional model is generated from the second set of intraoral scans, has a second resolution and represents a remainder of the dental arch, wherein the first resolution is greater than the second resolution.

Abstract: An intra-oral scanning device and system are augmented to provide an active delete (or filter) tool. The tool automatically detects and deletes unwanted items and artifacts capturing as the scan is being done. The technique provides a better user experience by automatically removing items the deletion of which that may otherwise be time-consuming, frustrating, or impossible for the user to delete any other way.

Abstract: A system and method for measuring three-dimensional (3D) coordinate values of an environment is provided. The system includes a movable base unit a first scanner and a second scanner. One or more processors performing a method that includes causing the first scanner to determine first plurality of coordinate values in a first frame of reference based at least in part on a measurement by at least one sensor. The second scanner determines a second plurality of 3D coordinate values in a second frame of reference as the base unit is moved from a first position to a second position. The determining of the first coordinate values and the second plurality of 3D coordinate values being performed simultaneously. The second plurality of 3D coordinate values are registered in a common frame of reference based on the first plurality of coordinate values.

Abstract: Systems for detecting and measuring certain dental defects and/or existing restorations, such as lesions which may or may not invade interproximal areas, using a neural network is disclosed. In some embodiments, a patient's health conditions and certain dental conditions such as crowding, presence of implants, gum disease, etc. are also considered by an automated system to classify the dental health of a patient into one or more risk classes. The system then suggests appropriate remedial measures and an appropriate maintenance program for that patient to keep therapy within guidelines of proven standard of care, leading the way to reduce tooth loss in population.

Abstract: Systems and methods for generating a 3D model of a dentition are disclosed herein. A method includes generating a first 3D model of a dentition. The dentition includes a model tooth in a first position. The method includes receiving a digital representation comprising a patient tooth. The patient tooth corresponds to the model tooth of the first 3D model. The method includes determining a virtual camera parameter associated with the digital representation. The method includes adjusting the virtual camera parameter to determine a 3D position of the corresponding patient tooth. The method includes moving the model tooth of the first 3D model from the first position to a second position. The second position corresponds to the 3D position of the corresponding patient tooth. The method includes generating a second 3D model comprising the model tooth of the first 3D model in the second position.

Abstract: The present invention relates to an apparatus for varying a focal point of an optical system in a dental 3D-scanner, comprising: a lens unit with a lens being movable between a front reversal position and a rear reversal position to vary a position of a focal point with respect to a scan object; a guide unit for guiding a movement of the lens unit between the front reversal position and the rear reversal position along a guide axis being parallel to an optical axis of the lens; and a drive unit for driving the movement of the lens unit, said drive unit including a linear motor with an anchor and a stator, said anchor being movable along a drive axis of the drive unit that is parallel to the guide axis, said stator being affixed to the guide unit. The present invention further relates to a dental 3D-scanner for scanning a three-dimensional scan object.

Abstract: Semisolid oral dispersions for whitening teeth comprising a hydrophilic discontinuous phase and a hydrophobic continuous phase. The semisolid oral dispersions include a hydrophilic discontinuous phase comprising bleaching agent particles. The semisolid oral dispersions also include a hydrophobic continuous phase comprising petrolatum. The h bleaching agent particles can include peroxide compounds and/or hydrogen peroxide adducts. The bleaching agent particle can have a solubility in water of at least about 20 parts, by weight of the particles, in about 100 parts, by weight, of water.

Abstract: Some aspects relate to systems and methods for estimating a trend associated with dental tissue. An exemplary system may include a sensor configured to periodically detect a plurality of oral images representing a plurality of exposed tooth surfaces and a computing device configured to receive the plurality of oral images from the sensor, aggregate a first aggregated oral image as a function of a first plurality of oral images detected at a first time, aggregate a second aggregated oral image as a function of a second plurality of oral images detected at a second time, and estimate a trend as a function of the first aggregated oral image and the second aggregated oral image.

Abstract: The present invention relates to a method for comparing three-dimensional dental structures, comprising the steps of acquiring (S101) a target data set representing the shape and optical properties of a natural tooth; rendering (S102) a digital tooth model (200) to generate an actual data set representing the shape and optical properties of the digital tooth model; determining (S104) a first comparison value from the actual data set; determining (S105) a second comparison value from the target data set; and determining (S106) a deviation based on the first and second comparison values.

Abstract: A method for intraoral scanning, including introducing an intraoral scanner (IOS) head into an oral cavity, acquiring an image of a field of view (FOV), processing the acquired FOV image and adjusting at least one image acquisition parameter based on said processing, and an intraoral scanner (IOS) including an IOS head including at least one imager imaging a field of view (FOV), at least on light emitter that illuminates said FOV and circuitry that controls said imager and/or said light emitter.

Abstract: Provided is a tooth whitening device capable of performing tooth whitening treatment. The tooth whitening device can be disposable. The tooth whitening device comprises: a main frame provided in a horseshoe shape and having a whitening groove in which teeth can be fitted; a support member coupled to the main frame; a plurality of light-emitting members installed inside the main frame and configured to emit light during tooth whitening; a fluid storage member positioned to extend through the insides of the main frame and the support member, and configured to store a fluid such as saliva flowing out of the mouth during the tooth whitening; and a control member for controlling a light-emitting time or operation of the light-emitting member, wherein the whitening groove is coated with a gel-type whitener.

Abstract: A tomography convergence-type oral scanner includes an oral scanning unit comprising a projector including a first light source for generating visible light, and a camera for generating image data by receiving the visible light reflected from a tooth; an optical tomography scanning unit comprising an OCT body including a second light source that has a different wavelength from the first light source and generates a measurement light incident on the tooth, a beam splitter for splitting the measurement light into a reference light and a measurement light, a reference mirror that reflects the reference light, and a photodetector for detecting an interference light, and an OCT scan probe including a collimator for converting the measurement light into a parallel light and a MEMS mirror for reflecting the converted parallel light; and a dichroic mirror for transmitting the visible light and reflecting the parallel light, thereby irradiating a tooth to be measured.

Abstract: A device and method for treating sleep and awake bruxism includes an intraoral phototherapy device having a mouthpiece for delivering light radiation. Instructions are provided for waking using the intraoral phototherapy device by placing the mouthpiece at the treatment area and applying light radiation during a predetermined number of sessions throughout a predetermined treatment period wherein the incidence of awake and sleep bruxism is decreased compared to without light treatment.

Abstract: A method of controlling an intraoral scanner includes upon completion of lighting a first projection device, triggering a second projection device to initiate lighting, upon initiation of lighting the first projection device, transmitting a first camera trigger signal, a first delay circuit delaying the first camera trigger signal until completion of lighting the second projection device, and upon receiving the first camera trigger signal, a first camera and a second camera starting exposing images.

Abstract: Illumination devices for impinging light on tissue, for example within a body cavity of a patient, to induce various biological effects are disclosed. Biological effects may include at least one of inactivating and/or inhibiting growth of one or more pathogens, upregulating a local immune response, increasing endogenous stores of nitric oxide, releasing nitric oxide from endogenous stores, and inducing an anti-inflammatory effect. Biological effects may include upregulating and downregulating inflammatory immune response molecules within a target tissue. Wavelengths of light are selected based on intended biological effects for one or more of targeted tissue types and targeted pathogens. Light treatments may provide multiple pathogenic biological effects, either with light of a single wavelength or with light having multiple wavelengths.

Abstract: A method for dental treatment may include receiving photos of a patient's dentition, gathering treatment parameters for at treatment plan. The treatment parameters may represent attributes of the treatment plan selected by a doctor for the patient's dentition of a patient. The method may include generating, using the photos and the treatment parameters, one or more intelligent guidance rules to guide application of at least a portion of the treatment parameters to the patient's dentition, generating instructions to apply the intelligent patient guidance rules to the patient's dentition, and providing the instructions to the patient to apply the at least a portion of the treatment plan in accordance with the intelligent patient guidance rules.

Abstract: A dental treatment appliance includes a treatment system which transmits a pulsed signal towards the oral cavity and receives a signal returned from the oral cavity. A controller actuates the treatment of the oral cavity of the user depending on the received signal.

Abstract: A method for generating a digital 3D representation of at least a part of an intraoral cavity, the method including recording a plurality of views containing surface data representing at least the geometry of surface points of the part of the intraoral cavity using an intraoral scanner; determining a weight for each surface point at least partly based on scores that are measures of belief of that surface point representing a particular type of surface; executing a stitching algorithm that performs weighted stitching of the surface points in said plurality of views to generate the digital 3D representation based on the determined weights; wherein the scores for the surface points are found by at least one score-finding algorithm that takes as input at least the geometry part of the surface data for that surface point and surface data for points in a neighbourhood of that surface point.

Abstract: This disclosure relates to method and system for generating tightest revolve envelope for a Boundary representation (B-rep) Computer-Aided Design (CAD) model. The method includes receiving a 2-dimensional (2D) point cloud within an XY-plane corresponding to each of a plurality of faces of the B-rep CAD model within an XYZ-space. The method further includes, for each of the plurality of faces, determining a concave hull shape for the 2D point cloud through a concave hull algorithm. The method further includes combining the concave hull shape corresponding to each of the plurality of faces of the B-rep CAD model through at least one of a Boolean operation and a stitching operation to obtain a tightest revolve profile of the B-rep CAD model. The method further includes revolving the tightest revolve profile about X-axis of the XYZ-space to obtain a tightest revolve envelope corresponding to the B-rep CAD model.

Abstract: Oral hygiene monitoring system is disclosed to track motion and orientation of an oral hygiene device. The control system may process data output from a motion sensor to determine position and orientation of an oral hygiene device with respect to a user's mouth. In some examples, the system may use machine learning techniques to identify position and orientation, brush stroke type, and other specific actions.

Abstract: A dental procedure performed on target tissue without anesthetic or anesthesia including preconditioning the target tissue using a laser device constructed to produce light in a wavelength range of 2750 nm to 11500 nm, to provide an energy fluence in a range of 50 J/cm2 to 100 J/cm2, and to operate in a free running pulsed mode providing 60 ?m bursts at a frequency of at least 50 Hz. Preconditioning includes selecting a combination of average optical output power and preconditioning time to administer low level laser therapy. The laser device is adjusted to deliver light through the light guide of the laser device at the selected average optical output power. Light delivered through the light guide of the adjusted laser device is directed toward the target tissue for the selected preconditioning time providing analgesia to the target tissue. Oral tissue is removed from the preconditioned target tissue during analgesia.

Abstract: A method of dental treatment may include receiving photos of a person's dentition, identifying a stage of a treatment plan administered to the person's dentition, gathering a three-dimensional (3D) model of the person's dentition corresponding to the stage of the treatment plan, projecting attributes of the 3D model of the person's dentition onto an image plane to get a projected representation of the person's dentition at the stage of the treatment plan, comparing the photos to the projected representation to derive an error image representing the comparison, and analyzing the error image for discrepancies, wherein the discrepancies represent one or more deviations of the person's dentition from the stage of the treatment plan.

Abstract: Novel dispersions of nanoparticles such as carbon nanotubes, carbon nanofibers, boron nanotubes, clay nanotubes, other nanotube species, buckminster fullerenes, graphene, graphene nanoplatelets, elements, oxides, nanoparticles, nanoclusters, nanopowders, nanocrystals, nanoscale molecules, other nanoscale materials, as well as products produced therefrom are described. These dispersions can then be further processed into a wide variety of products including but not limited to composite materials, polymers, resins, epoxies, emulsions, cements, coatings, clays, films, membranes, paper, fibers, inks, paints, pastes, electronics, spintronics, optics, biotechnology materials, electrodes, field emission or other displays, plating, capacitance, ceramics, catalysts, days, ballistic materials, drug delivery, doping, magnetics, dielectrics, barrier layers, selective ion flow membranes, batteries, fuel cells, solar and other applications.

Abstract: A system for self-imaging a body portion includes a self-imaging device and an ancillary device that is attachable to the self-imaging device. The self-imaging device has a base member, a camera located within the base member and a guide element for transmitting light along a path extending between the camera and an exposed tip of the guide element that opens out of the self-imaging device at a given side of the device. The ancillary device is arranged to attach to the self-imaging device at said same given side while substantially not obstructing incoming light arriving towards the self-imaging device from being transmitted via the guide element towards the camera.

Abstract: A liquid lens can tilt a fluid interface, such as for optical image stabilization or off-axis focus. Tilting the interface can cause coma aberration or other dynamic wavefront error. The liquid lens can be driven to reduce the coma aberration or other dynamic wavefront error. For example, input shaped signals can be used. In some cases, the signals can be overdriven and/or underdriven, which can increase response time, and/or encourage settling of the interface.

Abstract: An example embodiment of a dental tool includes a main body portion having a first longitudinal end and a second longitudinal end, wherein the first end and the second end define respective reduced diameter portions, two or more tool attachments, each tool attachment comprising a working portion and a base portion, the base portion configured to be removably coupled to either of the reduced-diameter portions of the main body portion so as to secure the tool attachment to the main body portion, and a light source, disposed within the main body portion, arranged so as to illuminate the working portion of one of the tool attachments when the one of the tool attachments is coupled to the first end of the main body portion and the light source is electrically coupled to a power source.

Abstract: Disclosed are methods and digital tools for deriving tooth condition information for a patient's teeth, for populating a digital dental chart with derived tooth condition information, and for generating an electronic data record containing such information.

Abstract: An intra-oral scanning device includes a light source and an optical system, and communicates with a display system. The device provides for more efficient transmission and capture of images. It integrates OCT scanning with RGB-based scanning. In operation, the device is used for recording topological characteristics of teeth, dental impressions, or stone models by digital methods and for use in CAD/CAM of dental restorative prosthetic devices. To that end, the RGB-based scan obtains surface data (e.g., a margin), while the OCT scan penetrates the surface. The two scanners operate from within the same physical housing and preferably at the same time such that only one scanning pass (to obtain all necessary data) is required. The 3D data obtained from the OCT scan is registered with the 3D data obtained from the RGB-based scan by virtue of being captured using a common return path.

Abstract: An intraoral scanning system comprises and intraoral scanner and a processor. The intraoral scanner comprises one or more cameras and one or more structured light projectors, the intraoral scanner to generate a series of images using the one or more cameras, each image including at least a portion of a pattern projected by the one or more structured light projectors onto an intraoral three-dimensional surface. The processor runs a correspondence algorithm to compute respective three-dimensional positions of a plurality of features of the pattern on the intraoral three-dimensional surface, as captured in the series of images. The processor identifies the computed three-dimensional position of a detected feature of the pattern as corresponding to a particular projector ray r, in at least a subset of the series of images. The processor tracks the particular projector ray r across one or more additional images of the series of images.

Abstract: An aqueous solution for intraoral cleaning via irradiation with ultraviolet ray and/or near-ultraviolet visible ray and/or ray in an 800-900 nm near-infrared region is employed as the hydrogen peroxide aqueous solution, wherein a concentration of hydrogen peroxide is 1 w/v % to 7 w/v %, and a concentration of a hydrogen peroxide stabilizer is 81 ppm (mg/L) or less in the aqueous solution.

Abstract: An aqueous solution for intraoral cleaning via irradiation with ultraviolet ray and/or near-ultraviolet visible ray and/or ray in an 800-900 nm near-infrared region is employed as the hydrogen peroxide aqueous solution, wherein a concentration of hydrogen peroxide is 1 w/v % to 7 w/v %, and a concentration of a hydrogen peroxide stabilizer is 81 ppm (mg/L) or less in the aqueous solution.

Abstract: The plaque detecting device of the present invention comprises a light emitting unit (450) which irradiates ultraviolet or blue excitation light (L) toward the tooth surface (99a), and a first and second light receiving units (402) which receive radiated light (L?) from the tooth surface (99a). The first light receiving unit extracts the spectral component of a first wavelength region including the wavelength range of fluorescent light specific to plaque from the radiated light (L?), and obtains a first output value corresponding to the intensity of that spectral component. The second light receiving unit extracts, from the radiated light (L?), the spectral component of a second wavelength region containing the wavelength range of the fluorescent light specific to enamel and having a predetermined lower limit wavelength below the lower limit wavelength of the first wavelength region, and obtains a second output value corresponding to the intensity of this spectral component.

Abstract: A method (300) for characterizing color information about a tooth, comprising: (i) projecting (320) at least one predetermined color pattern (400); (ii) obtaining (330), using an imager (10), one or more images (90) each containing both a projected first predetermined color pattern (400) and at least a portion of a user's mouth (500); (iii) automatically identifying (340) by a controller (30), from the obtained one or more images, one or more teeth (510) in the at least a portion of the user's mouth (500( ); (iv) comparing (350) an imaged predetermined color pattern to a corresponding projected predetermined color pattern; and (v) extracting (360) by the controller, based on the outcome of the comparison, color information about the one or more identified teeth (510).

Abstract: In embodiments, a system for scanning an intraoral cavity comprises an intraoral scanner to generate intraoral scan data of the intraoral cavity and viewfinder images of the intraoral cavity, a display, and a processing unit operatively connected to the intraoral scanner and to the display. The processing unit is to: receive the intraoral scan data and the viewfinder images from the intraoral scanner; generate a three-dimensional (3D) digital model of the intraoral cavity using the intraoral scan data; output the 3D digital model to the display; output the viewfinder images to the display; determine which portions of the intraoral cavity have been scanned; determine a current field of view of the intraoral scanner; determine a visual indicator that provides guidance for positioning and orienting the field of view of the intraoral scanner; and output the visual indicator to the display.

Abstract: An intra-oral scanning device and system are augmented to provide an active delete (or filter) tool. The tool automatically detects and deletes unwanted items and artifacts capturing as the scan is being done. The technique provides a better user experience by automatically removing items the deletion of which that may otherwise be time-consuming, frustrating, or impossible for the user to delete any other way.

Abstract: One embodiment of a method for rendering one or more graphics images includes tracing one or more rays through a graphics scene; computing one or more surface normals associated with intersections of the one or more rays with one or more surfaces, where computing each surface normal includes: computing a plurality of intermediate surface normals associated with a plurality of adjacent voxels of a grid, and interpolating the plurality of intermediate surface normals; and rendering one or more graphics images based on the one or more surface normals.

Abstract: An artificial intelligence cloud diagnosis platform is provided. A subject sample is scanned to a cloud side, AI on the cloud conducts preliminary detection, and then a doctor carries out diagnosis and rechecking. The artificial intelligence cloud diagnosis improves the diagnosis accuracy, fundamentally solves the problems of insufficient technical experts and non-uniform medical resource distribution in remote areas, greatly improves the diagnosis efficiency, reduces the diagnosis cost, establishes a professional database of the same type of detection samples, and is beneficial to the further research of a disease in the later period.

Abstract: A hand held personal care device 1 has a main housing 2 arranged to be held by hand, and an operative unit 3 connected to the main FIG. 1 housing 2 and adapted for carrying out a personal care operation to a body part of a user. The main housing 2 has a main axis of extension 36 and accommodates a light indicator 4 for indicating an operational condition of the personal care device 1. The light indicator 4 has a light emitting surface 6, that extends circumferentially around the main housing 2 as a closed-loop surface about the main axis of extension 36, and a light guiding wall 31 of which at least a portion, including the closed-loop surface, extends as a closed-loop wall portion 40 about the main axis of extension.