Disclosed is an electric toothbrush, comprising: a handle; a drive element provided in the handle, an output shaft of the drive element extending out of the handle; a brush head disposed at one end of the output shaft remote from the handle and connected to the output shaft; and a stress triggering element and a stress detecting element, which are oppositely provided on surfaces of the output shaft; wherein the stress triggering element is configured for producing stress concentration at the position where the stress triggering element is located when the output shaft motions; and the stress detecting element is configured for detecting the stress at the position where the stress triggering element is located, thereby obtaining a pressure corresponding to the stress, the electric toothbrush as provided offers a simple structure for pressure detection.

The invention discloses an oral care device (100) comprising a head portion (102) having a protuberance (104) for engaging an interproximal region within an oral cavity. The oral care device (100) also comprises at least one sensor (108) for acquiring motion data for the oral care device, and a processor (110). The processor is configured to determine when the protuberance of the head portion engages an interproximal region in the oral cavity; and determine, based on motion data acquired by the at least one sensor as the protuberance moves between interproximal regions, a position of the head portion of the oral care device in the oral cavity. An oral care system and a method of determining a position of an oral care device in an oral cavity are also disclosed.

An oral care system that includes an oral care implement and a tracking attachment. The oral care implement may include a handle and a head. The tracking attachment is detachably coupled to the oral care implement. The tracking attachment may include a first component comprising a first housing having an inner surface that defines a first cavity and a second component comprising a second housing having an inner surface that defines a second cavity. When the tracking attachment is coupled to the oral care implement, a first portion of the handle is positioned within the first cavity and a second portion of the handle is positioned within the second cavity.

An electric toothbrush includes a brush head at an end of a handle, an acceleration sensor and/or a rotation sensor that detect(s) movement parameters of the electric toothbrush, a wireless communication interface that wirelessly transmits recorded data comprising the detected movements parameters of the electric toothbrush in a processed state and receives treatment mode data for operating the electric toothbrush, a pressure sensor that detects a contact pressure applied by the brush head to teeth and/or gums, at least one first outputting device that visually outputs signals or commands in accordance with the detected contact pressure or in accordance with the detected movement parameters, and at least one second outputting device that haptically outputs signals or commands, in the form of vibrations, in accordance with the detected contact pressure or in accordance with the detected movement parameters.

In one embodiment, the invention can be a system for determining toothbrush effectiveness, the system comprising a data capture subsystem comprising at least one sensor and configured to generate brushing data during a participant brushing session directed entirely by the participant, and at least one processor configured to receive the brushing data from the data capture subsystem. A brushing simulation subsystem includes artificial teeth; and a robotic arm configured to: hold a toothbrush; and receive from the at least one processor instructions for a motion to be carried out by the robotic arm, the motion of the robotic arm causing the toothbrush to carry out an automated brushing session upon the artificial teeth, the motion of the robotic arm being based on the brushing data captured during the participant brushing session.

An oral care system including a toothbrush having a sensor that generates brushing data during a brushing session and a programmable processor. The programmable processor may be configured to receive the brushing data from the sensor, receive oral characteristic data indicative of an oral characteristic of the user, and determine at least one of a suggested brushing routine and a brushing evaluation for a brushing session based at least in part on the oral characteristic data and the brushing data. The oral characteristic may be present in or adjacent to a first portion of the dentiture. The brushing evaluation or brushing routine may be based on or includes at least one of: an altered target brushing time for the first portion of the dentiture; and a modified brushing motion expectation for the first portion of the dentiture.

A method of providing tooth-brushing guide information according to an embodiment of the present invention includes an operation in which a user terminal analyzes a captured image of a user, recognizes the face of the user, and identifies landmarks of the face; an operation in which the user terminal generates a personalized dental model of the user using the landmarks, an operation in which the user terminal provides a virtual dental image by augmented reality using the dental model; and an operation in which the user terminal provides tooth-brushing guide information using the dental model.

A personal hygiene device has a drive unit having a support, a stator fixedly mounted at the support, and an armature spring-mounted at the support for driven linear oscillating motion along a first longitudinal direction parallel to or coinciding with an x-axis of an x-y-z coordinate system. The armature has a center of gravity located in rest at a coordinate [x.sub.a, y.sub.a, z.sub.a], and a drive shaft fixedly coupled with the armature and having a center of gravity located in rest at a coordinate [x.sub.d, y.sub.d, z.sub.d]. A first treatment head assembly, detachably connected to the drive shaft, has a center of gravity located in rest at a coordinate [x.sub.t1, y.sub.t1, z.sub.t1]. A secondary mass element, spring-mounted at the support for essentially linear oscillating motion along the first longitudinal direction, has a center of gravity located in rest at a coordinate [x.sub.m, y.sub.m, z.sub.m]. At least the coordinate [x.sub.a, y.sub.a, z.sub.a] of the center of gravity of the armature has an offset in at least one of the y-direction and z-direction with respect to the coordinate [x.sub.d, y.sub.d, z.sub.d] of the center of gravity of the drive-shaft or with respect to the coordinate [x.sub.t1, y.sub.t1, z.sub.t1] of the center of gravity of the first treatment head assembly, i.e., y.sub.a≠y.sub.d and/or y.sub.a≠y.sub.t1 and/or z.sub.a≠z.sub.d and/or z.sub.a≠z.sub.t1; and the secondary mass element is configured such that the coordinate [x.sub.m, y.sub.m, z.sub.m] of the center of gravity of the secondary mass element is aligned with the coordinate [x.sub.j, y.sub.j, z.sub.j] of the joint center of gravity of the drive shaft, the first treatment head assembly and the armature in the at least one offset direction, i.e., y.sub.m=y.sub.j and z.sub.m=z.sub.j, so that a line connecting the coordinate [x.sub.m, y.sub.m, z.sub.m] of the center of gravity of the secondary mass element and the coordinate [x.sub.j, y.sub.jz.sub.j] of the joint center of gravity is parallel to or coincides with the x-axis.

A brushing tracker configured to be mounted to a toothbrush has a motion sensor and a transceiver that collect and output raw motion data. The raw motion data is received by a relay and forwarded to a cloud-based remote processing system that processes the raw motion data to determine brushing adequacy based on predetermined criteria. The motion sensor and transceiver are disposed in a flexible case. An attachment band enables the brushing tracker to be affixed to a standard toothbrush for use and affixed to a different toothbrush when desired.

An apparatus and system for cleaning oral cavities via a device with predetermined optimally imposed methods to remove germs, bacteria, tartar and plaque, which have been clinically proven to cause gum disease and tooth loss, efficiently and with minimal abrasion to tooth enamel and gums. Variations of this disclosure include but are not limited to embodiments where the device utilizes any of the aforementioned components to achieve the intended function. However, a preferred embodiment of this disclosure comprises an electrically controlled magnetic field to allow optimal contact pressure in the mouth, a motion device capable of tracking motion coordinates to record daily cleaning methods and to inform recommendations and web enabled capability to store activity over time, a scrolling toothbrush and gum cleaning device or a stationary mouth guard device applying the same force dampening and applying technology in a more automated fashion.