Patent Description:
<CIT> discloses a power toothbrush comprising a drive, a capacitance touch pad array, a capacitance touch sensor, and a processor responsive to the sensor which detects a sliding position of a user's finger on the array. Depending on the position of such finger on the array the value of an operating characteristic of a drive signal for the drive of the toothbrush is controlled.

<CIT> discloses a power toothbrush with different user selectable cleaning modes.

Further prior art can be found in <CIT>, <CIT> and <CIT>.

The present invention is directed to an oral care system with the features of claim <NUM>.

The foregoing summary, as well as the following detailed description of examples and embodiments, will be better understood when read in conjunction with the appended drawings. It should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown in the following figures:.

The following description of examples and the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention or inventions. The description of illustrative embodiments is intended to be read in connection with the accompanying drawings, which are to be considered part of the entire written description. In the description of the exemplary embodiments disclosed herein, any reference to direction or orientation is merely intended for convenience of description and is not intended in any way to limit the scope of the present invention. Relative terms such as "lower," "upper," "horizontal," "vertical," "above," "below," "up," "down," "left," "right," "top," "bottom," "front" and "rear" as well as derivatives thereof (e.g., "horizontally," "downwardly," "upwardly," etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. Terms such as "attached," "affixed," "connected," "coupled," "interconnected," "secured" and other similar terms refer to a relationship wherein structures are secured or attached to one another either directly or indirectly through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise. The discussion herein describes and illustrates some possible non-limiting combinations of features that may exist alone or in other combinations of features. Furthermore, as used herein, the term "or" is to be interpreted as a logical operator that results in true whenever one or more of its operands are true. Furthermore, as used herein, the phrase "based on" is to be interpreted as meaning "based at least in part on," and therefore is not limited to an interpretation of "based entirely on.

Features of the present invention may be implemented in software, hardware, firmware, or combinations thereof. The computer programs described herein are not limited to any particular embodiment, and may be implemented in an operating system, application program, foreground or background processes, driver, or any combination thereof. The computer programs may be executed on a single computer or server processor or multiple computer or server processors.

Processors described herein may be any central processing unit (CPU), microprocessor, micro-controller, computational, or programmable device or circuit configured for executing computer program instructions (e.g., code). Various processors may be embodied in computer and/or server hardware of any suitable type (e.g., desktop, laptop, notebook, tablets, cellular phones, etc.) and may include all the usual ancillary components necessary to form a functional data processing device including without limitation a bus, software and data storage such as volatile and non-volatile memory, input/output devices, graphical user interfaces (GUIs), removable data storage, and wired and/or wireless communication interface devices including Wi-Fi, Bluetooth, LAN, etc..

Computer-executable instructions or programs (e.g., software or code) and data described herein may be programmed into and tangibly embodied in a non-transitory computer-readable medium that is accessible to and retrievable by a respective processor as described herein which configures and directs the processor to perform the desired functions and processes by executing the instructions encoded in the medium. A device embodying a programmable processor configured to such non-transitory computer-executable instructions or programs may be referred to as a "programmable device", or "device", and multiple programmable devices in mutual communication may be referred to as a "programmable system. " It should be noted that non-transitory "computer-readable medium" as described herein may include, without limitation, any suitable volatile or non-volatile memory including random access memory (RAM) and various types thereof, read-only memory (ROM) and various types thereof, USB flash memory, and magnetic or optical data storage devices (e.g., internal/external hard disks, floppy discs, magnetic tape CD-ROM, DVD-ROM, optical disk, ZIP™ drive, Blu-ray disk, and others), which may be written to and/or read by a processor operably connected to the medium.

In certain embodiments, the present invention may be embodied in the form of computer-implemented processes and apparatuses such as processor-based data processing and communication systems or computer systems for practicing those processes. The present invention may also be embodied in the form of software or computer program code embodied in a non-transitory computer-readable storage medium, which when loaded into and executed by the data processing and communications systems or computer systems, the computer program code segments configure the processor to create specific logic circuits configured for implementing the processes.

Turning in detail to the drawings, <FIG> illustrates an oral care system <NUM> in accordance with an example useful for understanding the present invention. The oral care system <NUM> includes a toothbrush <NUM> and a data processing unit <NUM>. The data processing unit <NUM> may communicate with a server <NUM>, for example, for purposes of storing larger amounts of data or to provide server-side processing functionality. The presence of the server <NUM> and communication between the data processing unit <NUM> and the server <NUM>, however, are not limiting of the present invention, unless specifically set forth in a claim.

The toothbrush <NUM> may be of any type that includes teeth cleaning elements suitable for cleaning teeth, and therefore is not limited to the toothbrush <NUM> illustrated. The toothbrush <NUM> shown in <FIG> generally includes a handle <NUM>, a neck <NUM>, and a head <NUM>. The neck <NUM> extends between the handle <NUM> and the head <NUM> and connects the head <NUM> to the handle <NUM>. The handle <NUM> provides the user with a mechanism by which the toothbrush <NUM> can be readily gripped and manipulated during a brushing session. The handle <NUM> may be formed of many different shapes, sizes and materials and may be formed by a variety of manufacturing methods that are well-known to those skilled in the art. The handle <NUM> extends from a proximal end <NUM> to a distal end <NUM> to form an elongated gripping portion <NUM> therebetween. The handle <NUM> transitions into the neck <NUM> at the distal end <NUM>. While the neck <NUM> generally has a smaller transverse cross-sectional area than the handle <NUM>, the invention is not so limited. Broadly speaking, the neck <NUM> forms a transition region between the handle <NUM> and the head <NUM>, with the head <NUM> extending from a proximal end <NUM> at the end of the neck <NUM> opposite the handle <NUM> to a distal end <NUM>. While the head <NUM> is normally widened relative to the neck <NUM>, in some embodiments the head <NUM> can simply be a continuous extension or narrowing of the neck <NUM> and/or handle <NUM>.

The handle <NUM>, the neck <NUM>, and the head <NUM> may be formed as separate components which are operably connected at a later stage of the manufacturing process by any suitable technique known in the art, including without limitation thermal or ultrasonic welding, a tight-fit assembly, a coupling sleeve, threaded engagement, adhesion, or fasteners. However, in other embodiments, the handle <NUM>, the neck <NUM>, and the head <NUM> of the toothbrush <NUM> may be formed as a single unitary structure using a molding, milling, machining, or other suitable process. In certain embodiments, the neck <NUM> may be made from a material which is more flexible than the handle <NUM> or the head <NUM>, and in such embodiments, the flexibility of the neck <NUM> provides the head <NUM> with mobility with respect to the handle <NUM>. Whether the handle <NUM>, the neck <NUM>, and the head <NUM> are of a unitary or multi-piece construction (including connection techniques) is not limiting of the present invention, unless specifically set forth in a claim. In some embodiments of the invention, the head <NUM> can have a first portion that is flexibly attached to a second portion of the head <NUM>. During brushing, the first portion can move with respect to the second portion to enhance the brush head's ability to reach certain portions of the dentiture of the user (the dentiture being understood as the user's set of teeth). In some embodiments of the invention, the head <NUM> may be detachable (and replaceable) from the handle <NUM> and/or from the neck <NUM> using techniques known in the art.

The head <NUM> generally includes a front surface <NUM>, a rear surface <NUM> and peripheral side surfaces <NUM> that extend between the front and rear surfaces <NUM>, <NUM>. The front surface <NUM> and the rear surface <NUM> of the head <NUM> can take on a wide variety of shapes and contours, none of which are limiting of the present invention. For example, the front and rear surfaces <NUM>, <NUM> can be planar, contoured or combinations thereof.

The front surface <NUM> of the head <NUM> includes at least one teeth cleaning element, shown as a plurality of bristles <NUM>, extending therefrom for cleaning teeth surfaces. As used herein, the term "teeth cleaning element" is used in a generic sense to refer to any structure that can be used to clean or polish the teeth through relative surface contact. In certain embodiments, the head <NUM> may include a single teeth cleaning element, and in other embodiments, the head <NUM> may include two or more teeth cleaning elements. Common examples of the at least one teeth cleaning element include, without limitation, bristle tufts, filament bristles, fiber bristles, nylon bristles, spiral bristles, rubber bristles, elastomeric protrusions, flexible polymer protrusions, combinations thereof and/or structures containing such materials or combinations. Suitable elastomeric materials include any biocompatible resilient material suitable for uses in an oral hygiene apparatus. To provide optimum comfort as well as cleaning benefits, the at least one teeth cleaning element may be an elastomeric material having a hardness property in the range of A8 to A25 Shore hardness. Other materials within and outside the noted hardness range may also be used.

The bristles <NUM> of the toothbrush <NUM> can be connected to the head <NUM> in any manner known in the art. For example, staples/anchors, in-mold tufting (IMT) or anchor free tufting (AFT) could be used to mount the bristles <NUM> of the exemplary embodiment. In AFT, a plate or membrane is secured to the brush head such as by ultrasonic welding. The bristles extend through the plate or membrane. The free ends of the bristles on one side of the plate or membrane perform the cleaning function. The ends of the bristles on the other side of the plate or membrane are melted together by heat to be anchored in place. Alternatively, the bristles may be mounted to tuft blocks or sections by extending through suitable openings in the tuft blocks so that the base of the bristles are mounted within or below the tuft blocks.

Referring to both <FIG> and <FIG>, the data processing unit <NUM> includes a housing <NUM> and electronic circuitry <NUM>, with the housing <NUM> enclosing and/or supporting the various components of the electronic circuitry <NUM>. The electronic circuitry <NUM> includes a power source, shown as a battery <NUM> in the exemplary embodiment. The invention is not so limited, and other types of power sources may be used. The electronic circuitry <NUM> of the data processing unit <NUM> also includes a processor <NUM> communicably coupled to a memory <NUM>, a communication module <NUM>, and a user interface <NUM>.

The electronic circuitry <NUM> may include other components, such as a speaker to provide audible feedback to the user, one or more buttons to receive input from the user, and one or more ports for making a wired connection between the electronic circuitry <NUM> and other circuitry external to the data processing unit <NUM>. The data processing unit <NUM> may be a smartphone, a tablet computer, a laptop computer, and the like, although the invention is not so limiting. Here, the electronic circuitry <NUM> is located within housing <NUM> of the data processing unit <NUM>, this housing <NUM> being separate and distinct from the housing 103A of the toothbrush <NUM> The electronic circuitry <NUM> or certain components thereof may be located within the housing 103A of the toothbrush <NUM>.

The memory <NUM> may be any appropriate type of memory or storage which enables the processor <NUM> to perform the desired programming, such as volatile and/or non-volatile random access memory. The particular type of storage used for the memory <NUM> is not to be limiting of the invention.

Here, the user interface <NUM> is a touch-sensitive display which accepts input from the user directly on the display surface. The display may be any type of light emitting display, and the display may be an LED panel. The display may be an LCD panel, an OLED panel, or any other type of display which is electronically controllable by the programmable processor <NUM> to provide visual feedback to the user. As will be discussed below, the user interface can comprise any device or method by which a user interacts with the data processing unit or a programmable processor. For example, the user interface can utilize a non-touch-sensitive graphical user interface, buttons, a dial, a keyboard, and/or a mouse. A user interface can be omitted. For example, instead of receiving an oral characteristic by a user interface, oral characteristic data can be received from, or based on, data from a sensor that forms part of a brush.

The communication module <NUM> may include an antenna <NUM> to enable wireless transmission of communication signals. The communication module <NUM> may be configured and/or programmed to communicate using a wireless technology standard such as Wi-Fi, Bluetooth®, and the like, or it may communicate using any type of proprietary wireless transmission protocol. The mode of communication for which the communication module <NUM> is configured is not limiting of the invention unless specifically set forth in a claim. In certain embodiments, the communication module <NUM> may include a port to enable communications using wires and wired protocols, such as USB and the like.

The communication module <NUM> of the data processing unit <NUM> may be configured and/or programmed to communicate with the server <NUM>. The communication module <NUM> may communicate with the server <NUM> over any combination of public and/or private network, and the communications may be wired, wireless, or a combination of the two. In certain embodiments, the communication module <NUM> may communicate with the server <NUM> over the Internet using one or more types of communication protocols. In certain embodiments, the server <NUM> may be programmed with one or more application programming interfaces (APIs) which provides server-side functionality to the data processing unit <NUM>. The communication module <NUM> may also be configured to communicate with the toothbrush <NUM>, for example, in the receipt from the toothbrush <NUM> of data related to a brushing session.

<FIG> is a flowchart showing a process <NUM> for determining a brushing routine and a brushing evaluation from an oral characteristic according to an example useful for understanding the invention. The exemplified process <NUM> may be implemented as programming for the programmable processor <NUM> of the data processing unit <NUM>. For convenience, as part of the description below, reference will also be made to the hardware components of the data processing unit <NUM> discussed above in <FIG>, and means for obtaining brushing session data discussed with respect to <FIG>. While the processor <NUM> and other electronic circuitry <NUM> form part of the data processing unit, the disclosure is not so limited. A processor forming part of the toothbrush can carry out the steps carried out by processor <NUM>.

In a first operation, the programmable processor <NUM> receives oral characteristic data indicative of an oral characteristic of a user (operation <NUM>). An "oral characteristic" can refer to any quality or trait of or affecting a user's oral cavity. Such oral characteristics can include, but are not limited to, an oral sensitivity (e.g., of the teeth, gums, or another part of the mouth), an abnormality of the dentiture (e.g., a missing tooth, a crooked tooth, an extra tooth), the presence or absence of wisdom teeth, a receding gum line, a tooth structure that traps (or tends to trap) plaque, plaque present at a first portion of the dentiture, a cavity, an erosion of one or more teeth, an oral injury or procedure (e.g., a recent tooth removal), a type of bacteria present in the mouth (including excessive bacteria or a harmful bacteria), and any indicator (physical, chemical, or otherwise) of a disease or malady (e.g., oral cancer).

"Oral characteristic data" can refer to any type of information indicative of an oral characteristic of a user, including information extracted or derived from other information or data indicative of an oral characteristic, regardless of the form of the extracted information, and combinations thereof. The oral characteristic data may be in the form of mathematical data, analog data, and/or digital data. For example, the oral characteristic data can be data obtained from a user interface, data obtained from a sensor, or data derived from one or both of the foregoing.

In certain examples, the oral characteristic is input at a user interface of a data processing unit. The data processing unit then generates oral characteristic data indicative of the chosen oral characteristic, which is then transmitted to a programmable processor. The receipt of oral characteristic data from a user interface is discussed in more detail below with respect to <FIG> and <FIG>.

In the invention, the oral characteristic data is generated using a sensor operably coupled to a programmable processor. The sensor can be any device or subsystem configured to detect an oral characteristic (or evidence of an oral characteristic) and generate oral characteristic data. For example, the sensor can be an accelerometer, a gyroscope, a magnetometer, a pressure sensor, an optical imaging subsystem, and an oral malady detection subsystem. The sensor forms part of the toothbrush (e.g., an accelerometer located on a head of the toothbrush to detect motion of the brush head). In other examples, the sensor can form part of a separate device, such as a data processing unit (e.g., a camera on the phone that can carry out optical imaging to detect a receding gum line or a cavity).

For example, <FIG> discuss a toothbrush <NUM> having electronic circuitry for collecting brushing session data. As is discussed in more detail below, the one or more sensors <NUM> can be, for example, an accelerometer, gyroscope, magnetometer, or pressure sensor. The brushing session data that is detected by the sensor may include data regarding, for example, a toothbrush's position, motion, acceleration, frequency, and/or pressure against the surface of the teeth. The brushing session data can be indicative of numerous issues, such as avoidance of a portion of the dentiture (indicating, for example, an oral sensitivity), excessive brushing (indicating for example, a tooth structure that traps plaque or food), a unique brushing motion (indicating for example, a hidden, crooked, or missing tooth), or the presence or absence of a chemical (indicating, for example, a high bacteria content in the user's mouth).

In one embodiment, the sensors generate brushing session data indicative of brushing motion, location, and/or pressure. This data is then used to determine that the user is avoiding brushing a certain portion of the dentiture, or using only minimal pressure. This avoidance can indicate an oral sensitivity at or adjacent to that portion of the dentiture. To confirm, a user interface, upon receiving such brushing session data, can provide the user a question such as "Do you have oral sensitivity in the region indicated below," with an image of the user's dentiture and an indication of the avoided portion.

In another embodiment, excessive brushing of a certain portion of the dentiture can indicate a tooth structure that traps plaque or food, such as molars that tend to cause cavities, or a crooked or hidden tooth (i.e., a tooth behind another tooth and difficult to access). If the brushing session data indicates excessive brushing of a certain portion, the user interface can query the user to determine or confirm the reason.

In another embodiment, the sensor can determine that the user is using a unique brushing motion for a portion of the dentiture. The user interface can query the user as to whether this motion is being carried out to clean a unique oral characteristic, such as a hidden, crooked, or missing tooth, a gap in the teeth, or another unique property of the user's dentiture. For example, a user may use a unique, vertical brushing motion to brush a hidden tooth, or may not move the brush as deeply into the oral cavity because of missing wisdom teeth or molars.

In another embodiment, the sensor can be an oral malady detection subsystem. For example, a subsystem could use chemistry to determine the presence of an abnormal property, such as high bacteria content in a user's saliva. Other properties could be indicative of a cavity, plaque, bad breath, or cancer, or another oral disease or malady.

In another embodiment, the sensor can be an optical imaging subsystem that can identify a unique oral characteristic, such as receding gum line in a certain area, a missing or crooked tooth, an extra tooth, or a cavity. For example, an imaging system can distinguish the white of a tooth and the pink of gums to determine a length of a gum line and whether there is an abnormality. An imaging system could similarly be used to identify a developing cavity and thus an area that warranted more brushing attention, or tooth erosion from tooth grinding that can cause sensitivity. The subsystem can utilize the technology of a data processing unit providing a user interface (such as the camera and processor of a smartphone), or another, separate device.

It is noted that, in some of the embodiments discussed above, the user is queried to confirm that the suspected oral characteristic is present. In other embodiments, this step can be omitted. Further, the sensor(s) can determine a suspected oral characteristic based on data from one brushing session or from a plurality of brushing sessions. Further, the above characteristics can alternatively be determined by querying the user, rather than by using brushing session data provided by sensors.

In a further operation, a suggested brushing routine is determined based at least in part on the oral characteristic data (operation <NUM>). The suggested brushing routine can be any one or more steps or instructions for brushing teeth. The determination of the suggested brushing routine may be achieved in any number of ways. In certain embodiments, the suggested brushing routine may be determined by presenting the user with a list of potential brushing routines that accord with the determined oral characteristic, and having the user select the suggested brushing routine from among the list of potential brushing routines. In certain embodiments, the suggested brushing routine may be determined by adjusting a standardized brushing routine based on the oral characteristic data, or by adjusting a time based on the oral characteristic data, as described below. In certain embodiments, the suggested brushing routine may be determined by selecting a predetermined brushing routine based on the oral characteristic data and then adjusting the predetermined brushing routine based on a user brushing history. In such embodiments, the user brushing history may be based upon brushing session data collected from previous brushing sessions of the user. Such brushing session data may be based upon brush stroke, brushing aggressiveness, or upon any other measure of brushing effectiveness. In addition, such brushing session data may be saved in the memory <NUM> of the data processing unit <NUM> or in a memory of the server <NUM>. In still other embodiments, one or more of the aforementioned processes for determining the suggested brushing routine may be used in combination.

In one embodiment, the suggested brushing routine is determined by adjusting an optimum brushing time based on the oral characteristic data to determine the brushing time for the suggested brushing routine. In this embodiment, the optimum brushing time is predetermined from a standardized brushing routine. The standardized brushing routine may be an industry standard brushing routine in which the optimum brushing time is <NUM> minutes. This process can begin with the oral characteristic data being received by the data processing unit <NUM>. Next, the data processing unit <NUM> determines an offset time based on the oral characteristic data. For example, if a certain portion of the dentiture is sensitive, then the offset time for this portion may be a negative number. Following the offset time determination, the target brushing time for the brushing routine is calculated. As part of this step, the programmable processor <NUM> of the data processing unit <NUM> calculates the target brushing time by retrieving an optimum time which is stored in the memory <NUM> and adding the determined offset time to the optimum time. The determined target brushing time can then be displayed, and the user can be instructed to begin the suggested brushing routine. In certain embodiments, the processor <NUM> of the data processing unit <NUM> may provide other specific instructions for the brushing routine, such as the order for brushing different sections of the user's dentiture, the length of time to brush each section, which section to start with, the brushing motions to use for each section, and the like. When the brushing time has expired, the programmable processor <NUM> of the data processing unit <NUM> can instruct the user that the brushing routine is at an end.

In the exemplified embodiment, after determining the suggested brushing routine, there can be a determination of a brushing evaluation based on the oral characteristic data (operation <NUM>). As will be discussed in further detail below, the oral care system <NUM> can be configured to perform a brushing evaluation of a brushing session of a user. The brushing evaluation can be any assessment of the effectiveness of one or more brushing sessions. For example, as discussed in <FIG>, the toothbrush <NUM> can include sensors, and data derived from the sensors can be used to determine the motion, location, and/or pressure of the toothbrush. From this determination, the system <NUM> can determine how well the user brushed his or her teeth. In the exemplified embodiment, the evaluation is based in part on the oral characteristic data. Thus, for example, while a brushing evaluation would typically provide a negative evaluation when a certain portion of the dentiture was only brushed for ten seconds or with light pressure, the brushing evaluation according to the invention need not be negative if the user indicated that this was a sensitive portion of the dentiture. Accordingly, the user is not penalized in his brushing evaluation for dedicating less brushing time (or applying softer pressure) to a sensitive area of his dentiture. Thus, in certain embodiments, the determination of the brushing evaluation is based on both oral characteristic data and brushing data from a brushing session, the brushing data being derived from a sensor forming part of the toothbrush. Further, the brushing evaluation can be based on a comparison of the brushing data from the brushing session and the suggested brushing routine. For example, the brushing evaluation can be based on how well the user followed the suggested brushing routine.

The oral characteristic data can impact an evaluation of an individual brushing session, and can also impact an evaluation of a plurality of brushing sessions. Thus, while a recent wisdom tooth removal surgery will justify less and more gentle brushing of the molars for a few weeks, there is an expectation that eventually the brushing time and intensity will increase. A cumulative evaluation can reflect this. The cumulative evaluation will not penalize the user for gentle brushing immediately after the surgery, but will also expect more normal brushing to return eventually.

In the exemplified method <NUM>, the oral characteristic data is used to both determine a suggested brushing routine and determine a brushing evaluation. It is noted, however, that in other embodiments the oral characteristic data can be used to determine a suggested brushing routine but not to determine a brushing evaluation, or to determine a brushing evaluation but not to determine a suggested brushing routine.

The following are some examples of determined oral characteristics, and resulting brushing routines and/or evaluations. In one example, if there is a determination that a portion of the dentiture is sensitive, a suggested routine can recommend less time brushing the sensitive portion. Further, an evaluation can expect less time brushing this portion of the dentiture.

In another example, if there is a determination of an oral characteristic that warrants excessive brushing of a portion of the dentiture (e.g., a tooth structure that traps plaque or food, such as molars that tend to cause cavities, or a crooked or hidden tooth), a suggested brushing routine can dedicate additional time to this portion of the dentiture. Further, an evaluation can expect additional time brushing this portion of the dentiture.

In another example, if there is a determination that a unique oral characteristic warrants a unique brushing motion (e.g., a hidden, crooked, or missing tooth), a suggested routine can adjust its instructions to allow adequate brushing of these unique oral characteristics, including recommending the unique brushing motion. Further, an evaluation can allow for or expect these unique brushing motions.

<FIG> and <FIG> illustrates a data processing unit <NUM> having a user interface <NUM> for determining an oral characteristic according to one example useful for understanding the invention. In <FIG>, the user interface <NUM> provides a question <NUM> and answer options <NUM> regarding an oral characteristic. Here, the user inputs the oral characteristic through a user interface <NUM> that is a touch-sensitive screen, though alternative types of user interfaces can be utilized. Here, the user indicates that he has sensitive teeth. In <FIG>, a statement <NUM> is provided that is responsive to the answer <NUM>. The statement <NUM> asks the user which portion of the user's teeth are sensitive. A visualization of the dentiture <NUM> is provided. Here, the user provides a response <NUM> indicating that the back molars are sensitive. The questions, answers, statements, and responses shown are merely exemplary in nature, and any oral characteristics can be the subject of a question, answer, statement, or response on a user interface for the purposes of receiving oral characteristic data. In other examples, a user can type an oral characteristic and be provided with options that corresponded with the typed oral characteristic. A series of questions, statements, or topics can be provided to the user by the user interface. For example, the user interface can be used to determine several oral characteristics of the user and in varying degrees of detail.

<FIG> illustrates a toothbrush 103B comprising a user interface 175B according to another example useful for understanding the invention. Here, the toothbrush 103B comprises a user interface 175B and a programmable processor (not shown) similar to programmable processor <NUM> that forms part of data processing unit <NUM>. The user interface 175B comprises buttons 303B for use in providing or selecting an oral characteristic. The exemplified user interface 175B further comprises a display. The display can provide information similar to the information displayed on the touch-sensitive display <NUM>. For example, the display can provide information regarding a suggested brushing routine, or brushing evaluation information. The display can have more limited functionality. The display can be omitted. In this case, the user can indicate his oral characteristic using the buttons (or another user interface), but the determined routine or evaluation can appear elsewhere, such as on a separate data processing unit. Further, the toothbrush 103B can be any type of toothbrush, including a manual toothbrush or an electric toothbrush having an electrically-powered vibratory element.

<FIG> illustrates a data processing unit <NUM> having a user interface <NUM> that provides brushing instructions <NUM> for a brushing routine according to one example useful for understanding the invention, the instructions <NUM> being based in part on the oral characteristic received. Here, the brushing instructions <NUM> comprise real-time directions for a user to follow during a brushing session. The instructions <NUM> comprise an indication <NUM> of a region of the dentiture to brush, an indication <NUM> of a brushing motion, and an indication <NUM> of a time remaining for brushing the specified region. Here, the user interface <NUM> also provides an indication <NUM> of the total brushing time remaining in the suggested brushing routine. Different screens may show different instructions as the user progresses through the different stages of the brushing routine, thus coaching the user on which regions to brush, which brushing motions to use, and for how long. Certain indications or instructions can be omitted. Also, other indications or instructions can be added, such as an indication of whether to apply greater or lesser pressure or brushing intensity. The instructions (such as motion, region, and time) can be based at least in part on the oral characteristic of the user. Thus, for example, if a first portion of the user's dentiture was sensitive (or was adjacent to a receding gum line, or included a sensitive eroded tooth), the routine could reflect this by decreasing the brushing time suggested for this first portion of the dentiture, and/or by changing the brushing motions suggested for this portion of the dentiture. Further, if an oral characteristic is a tooth structure that traps plaque, the routine can reflect this by increasing the brushing time for the portion of the dentiture having this tooth structure, and/or by changing the brushing motions suggested for this portion of the dentiture. An evaluation of the brushing session can also reflect such adjusted expectations.

The suggested brushing routine can be determined by adjusting a preexisting brushing routine, the adjustment based at least in part on the oral characteristic data. The suggested brushing routine need not rely on a preexisting brushing routine. The brushing routine of the is provided in real-time, so that the user can follow a succession of instructions provided on the user interface <NUM>. The entire routine can be provided at once, and can be provided by other means, such as an email or a text message.

<FIG> illustrates a data processing unit <NUM> having a user interface <NUM> that provides an evaluation <NUM> of a brushing session of a user according to an example useful for understanding the invention. Here, the evaluation <NUM> comprises a visualization <NUM> of the user's dentiture. The dentiture can be divided into different regions, each of which the user is expected to brush during the brushing session. Brushing session data may be collected and processed according to the different regions of the dentiture. The collection of such brushing session data is described in more detail below with respect to <FIG>.

Here, the visualization <NUM> includes an indication <NUM> of a region of the dentiture not properly brushed. The evaluation <NUM> further comprises a recommendation <NUM> that provides the user advice on how to improve his or her brushing. The evaluation <NUM> also includes a performance metric <NUM> that indicates how well the user performed in brushing his or her teeth during the brushing session. Other metrics or visualizations can be used to indicate brushing performance, such as a percentage, or a number of stars (for example, three stars out of five). Further, as discussed above, the evaluation can be a cumulative evaluation based on a plurality of brushing sessions and oral characteristic data from those brushing sessions.

<FIG> illustrates an electronic toothbrush <NUM> according to an example useful for understanding the invention. The electric toothbrush <NUM> includes a handle <NUM> and a refill head <NUM>. Optionally, the handle <NUM> and the refill head <NUM> are removably coupled to each other. The control circuit <NUM> of the data processing unit <NUM> may reside at least partially within the handle <NUM>. Alternatively, the handle <NUM> may include a separate toothbrush control circuit which controls the electric toothbrush and communicates with the data processing unit <NUM>.

Here, the refill head <NUM> includes a bristle field <NUM> which includes at least one elastomeric element <NUM> and a tongue cleaner <NUM> on the back side <NUM> of the refill head <NUM>. Also here, shown schematically, the handle includes a motor <NUM> operably coupled to a shaft <NUM>, with an eccentric mass <NUM> positioned at the distal end of the shaft <NUM>. In combination, the motor <NUM>, the shaft <NUM>, and the eccentric mass <NUM> form an electrically-powered vibratory element.

<FIG> illustrates a partial sectional view of a toothbrush <NUM> having electronic circuitry for collecting brushing session data according to an example useful for understanding the invention. The handle <NUM> of the toothbrush <NUM> forms a housing for containing electronic circuitry <NUM> for collecting brushing session data. The handle <NUM> is a hollow structure in which a cavity <NUM> is formed. The electronic circuitry <NUM>, which includes a power source <NUM>, is located within the cavity. The electronic circuitry <NUM> may be used to collect and analyze brushing session data from which an evaluation of the brushing session may be made. The evaluation of the brushing session may be based at least in part upon the oral characteristic data. As discussed above, the brushing session data can also be used to determine an oral characteristic.

<FIG> is a schematic of the electronic circuity <NUM> of the toothbrush <NUM> of <FIG>. The electronic circuitry <NUM> includes a processor <NUM> communicably coupled to sensors <NUM>, a memory <NUM>, and a communication module <NUM>. The number of sensors <NUM> included as part of the electronic circuitry <NUM> depends upon the type of brushing session data to be detected and the functionality of each type of sensor employed. The brushing session data that is detected and collected may include data regarding position, motion, acceleration, frequency, and pressure against the surface of the teeth. Other types of brushing session data associated with a brushing session may also be detected and collected, and those listed herein are not to be limiting of the invention unless otherwise indicated in the claims. Only one sensor <NUM> may be included as part of the electronic circuitry <NUM>, or two or more sensors <NUM> may be included. By way of example, the at least one sensor <NUM> may be any one or more of the following: a <NUM>-axis accelerometer, a gyroscope, a magnetometer, a pressure sensor, among other types of sensors. In general, each sensor <NUM> included as part of the electronic circuitry <NUM> generates at least part of the brushing session data. For purposes of the present disclosure, the term "brushing session data" is any type of information which may be extracted or derived from a sensor or sensor signal, regardless of the form of the extracted information, for determining information about a brushing session of a user. By way of example, brushing session data may be in the form of mathematical data (such as a formula which mathematically represents at least part of the sensor signal), analog data (such as the waveform of the sensor signal), and/or digital data (such as a representation of at least part of the sensor signal in a digital format). The processor <NUM> and the memory <NUM> may be omitted from the electronic circuitry <NUM> of the toothbrush <NUM>. The sensors <NUM> may communicate brushing session data directly to the communication module for transmission.

The memory <NUM> may be any appropriate type of memory or storage which enables the processor <NUM> to perform the desired programming, such as volatile and/or non-volatile random access memory, or any other type of storage. The particular type of storage used for the memory <NUM> is not to be limiting of the invention. The communication module <NUM> includes an antenna <NUM> to enable wireless communication. The communication module <NUM> may be configured and/or programmed to communicate using a wireless technology standard such as Wi-Fi, Bluetooth®, and the like, or it may communicate using any type of proprietary wireless transmission protocol. The communication module <NUM> may include a port to enable communications using wires and wired protocols, such as USB and the like. The particular mode of communication used by the communication module is not limiting of the invention unless specifically set forth in a claim.

<FIG> illustrates a toothbrush dongle <NUM> for collecting brushing session data. Generally, the toothbrush <NUM> includes a handle <NUM> and a head <NUM> to which a plurality of teeth cleaning elements <NUM> are affixed. The dongle <NUM> may be removably affixed to the proximal end <NUM> of the handle <NUM>. The dongle <NUM> comprises a housing for containing electronic circuitry <NUM> and an associated a power source <NUM>, which may be similar to that described above in connection with <FIG>.

The brushing session data which is detected and collected by the toothbrush embodiments shown in <FIG> may include a side-to-side linear brush stroke motion, an up and down linear brush stroke motion, a circular brush stroke motion, a flicking brush stroke motion, a brush stroke rate, and a pressure of the head of the toothbrush on the teeth, amongst others. During use, the brushing session data is generated during at least a portion of the brushing session. The brushing session data may be used to evaluate the brushing session by calculating one or more performance metrics, and the performance metric may represent brushing efficacy during one or more portions of the brushing session. The performance metric may express the efficacy of a brushing session, or even for portions of a brushing session, as a single number, and stored in the memory <NUM> of the data processing unit <NUM> for later use. In certain embodiments, the data processing device <NUM> may transmit the calculated performance metrics to the server <NUM> for storage and or additional analysis.

In certain embodiments, the performance metrics which are stored in the memory <NUM> of the data processing unit <NUM> or on the server <NUM> may be used during future brushing sessions to aid in determining what brushing routine to suggest to the user. For example, performance metrics may be used in combination with the oral characteristic data to help determine the target brushing time for a brushing routine. Also, in embodiments in which performance metrics are stored, the performance metrics may be analyzed by machine learning processes, and the machine learning may be used to enhance future brushing routines.

The embodiments above discuss using oral characteristic data to determine a brushing routine and/or evaluation. Note that the routine or evaluation can also be based on other factors, such as predetermined brushing standards (e.g., two minutes of total brushing time and recommended brushing motions for different portions of the dentiture), physical characteristics of the brush being used by the user (e.g., soft or hard bristles, or the shape and/or size of the toothbrush head), and the user's brushing goals for a given brushing session (e.g., a quick fresh as opposed to a deep clean).

In certain embodiments, the user can use the data processing unit while brushing his teeth to receive real-time instructions for the brushing routine. In such instances, the brush and the data processing unit can be in communication. In other instances, the brush can be used without the data processing unit, and/or without a processor immediately determining a brushing routine or evaluation. For example, the brush can store brushing session data locally in the toothbrush, and this data can be retrieved at a later time. This stored brushing session data can subsequently be used for providing a brushing evaluation or suggested brushing routine, and/or for suggesting potential oral characteristics.

The disclosed embodiments provide several advantages. For example, the system can provide a brushing routine that takes into consideration the unique oral characteristics of the user. Thus, the brushing routine provided can reflect oral characteristics of the user, rather than providing the same standard routine regardless of the user. Further, the system can provide a brushing evaluation that takes into consideration the oral characteristics of the user. Thus, an evaluation can be based on the user's unique oral characteristics, rather than judging the brushing session based on an unadaptable, one-size-fits-all standard. For example, if a user has a first portion of the dentiture that is sensitive and is adjacent to a receding gum line, the suggested routine can dedicate less brushing time to this first portion, and can avoid penalizing the user for spending less than a standard time brushing this portion. Alternatively, if a user still has his or her wisdom teeth, the suggested routine can dedicate more time to the back molars, and the evaluation can expect that the user's brushing motion reaches further back in the oral cavity when brushing the back molars.

Claim 1:
An oral care system (<NUM>) comprising:
a toothbrush (<NUM>);
a memory (<NUM>); and
a programmable processor (<NUM>);
characterized in that
the programmable processor (<NUM>) is configured to:
receive oral characteristic data (<NUM>) indicative of an oral characteristic of a user;
store brushing session data comprising the oral characteristic data (<NUM>) in the memory (<NUM>) to create a user brushing history comprising a plurality of brushing sessions; and
determine for the user, based at least in part on the oral characteristic data, a suggested brushing routine (<NUM>) for at least one brushing session of the plurality of brushing sessions;
wherein the toothbrush (<NUM>) comprises at least one sensor (<NUM>) operably coupled to the programmable processor (<NUM>), the at least one sensor (<NUM>) configured to generate the oral characteristic data.