METHOD FOR DETERMINING OF MOVEMENT PATTERNS DURING A DENTAL TREATMENT

Abstract

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.

Claims

1. Method for determining a movement pattern of a dental treatment means, in particular of a toothbrush, said movement pattern resulting during a dental treatment, in particular teeth cleaning, at least comprising the steps: moving the dental treatment means at least in an X/Y plane in order to treat surface portions of the teeth, wherein data relating to at least one movement parameter of the dental treatment means relative to a reference system which moves with the head of the treated person are recorded by means of at least one optical detection device, wherein the data represent characteristic body points of the hand, body lines of the hand and/or body surfaces of the hand by which the dental treatment means is being guided, providing the recorded data to a processor device for determining the movement pattern, wherein the processor device defines a further three-dimensional reference system which at least at times during a movement of the dental treatment means moves in space with the dental treatment means, wherein the further reference system is formed by the characteristic body points of the hand, body lines of the hand and/or body surfaces of the hand by which the dental treatment means is being guided, and determining the movement pattern, wherein at least one relative movement between the reference system moving with the head of the treated person and the further reference system is determined.

2.-10. (canceled)

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0085] In the following, embodiments of the invention are described in an exemplarily manner with reference to the attached figures.

[0086] FIG. 1A shows one embodiment of a system according to the present teachings for recording (capturing) dental treatment movements;

[0087] FIG. 1B shows an internet based network according to the present teachings, in which multiple systems are involved;

[0088] FIG. 2A shows an outstretched hand with characteristic surface points or surface parts; and

[0089] FIG. 2B shows a hand clenched into a fist with characteristic surface points or surface parts, wherein the hand is holding a dental treatment means (toothbrush).

DETAILED DESCRIPTION OF THE INVENTION

[0090] In FIG. 1A, a system 1 for recording (capturing) dental treatment movements using a processor device 2 or a mobile end-user device 2 is shown. The mobile end-user device 2, which is preferably configured as a mobile phone, herein preferably has at least or exactly one optical detection device 4, such as an optical capturing device 4, that can be preferably formed as a camera. The camera preferably records (captures) exactly or more than 15 fps (frames per second), exactly, up to or more than 30 fps, exactly, up to or more than 45 fps, exactly, up to or more than 60 fps, exactly, up to or more than 75 fps, exactly, up to or more than 90 fps, exactly, up to or more than 120 fps or exactly, up to or more than 200 fps.

[0091] Reference number 6 denotes the recording (detection) area, in which preferably at least one part (portion) of the head, such as one or both pupils, the nose and/or the mouth, of a person 8 as well as at least one part (portion) of the hand 5 guiding the dental treatment means 14 are present. Reference numbers 10 and 12 denote preferably person-fixed axes or coordinate directions, which follow a movement of the head preferably exactly. Reference number 14 denotes a dental treatment means that is formed as toothbrush, which is moved in space according to reference number 16 and is thus moved relative to the head.

[0092] Motion sequences for correcting the movement and/or for specifying a motion sequence are displayable on the optical outputting device (display, screen) 18 of the processor device 2.

[0093] FIG. 1B shows that multiple processor devices 2 transmit via a data link, such as an internet link, data to a server that preferably generates optimized movement characteristics, such as in accordance with medical condition histories or defect histories of the individual persons.

[0094] Both FIGS. 1A and 1B underlie a method according to the present teachings for determining a movement pattern of a dental treatment means, such as a toothbrush, during a dental treatment, such as a teeth cleaning. Such as method preferably comprises the following steps 1 and 2:

[0095] 1. Moving the dental treatment means to treat surface parts of the teeth in at least an X-/Y-plane, wherein data concerning at least one motion parameter (e.g., the movement direction or—rotation, the acceleration, the path and/or the velocity) of the dental treatment means 14 relative to a reference system 10 that moves with the head 8 of the treated person are recorded (detected) by the at least one optical detection device 4. The data preferably consist of image information, like e.g. an arrangement of pixels, and preferably describe (represent) at least one part (portion) of the head 8 of the person and at least one part of the hand 5 of the person, with which the person is guiding the dental treatment means. Reference number 7 denotes the arm of the person from which the hand 5 guiding the dental treatment means 14 extends.

[0096] The processor device 2 defines a further three-dimensional reference system 16, that moves in space together with the dental treatment means 14 during a movement of the dental treatment means 14, wherein the further reference system 16 is particular preferably defined by characteristic anthropometric body points of the hand, body lines of the hand and/or body surfaces of the hand, with which the dental treatment means 14 is guided.

[0097] This further three-dimensional reference system 16 defined by hand parts/points/features is beneficial since the dental treatment means 14 is typically partially or even completely enclosed by the hand 5 of the user and thus can be at least partially invisible (hidden) for the optical detection device 4. Based on the movement of the hand characteristic(s), such as anthropometric, body points of the hand, body lines of the hand and/or body surfaces of the hand defining the further reference system 16, the position and/or orientation of the dental treatment means 14 is determinable. The processor device 2 preferably analyzes data, such as image information, recorded (captured) by the optical detection device 4 to define the further three-dimensional reference system 16.

[0098] However, it is also conceivable that the data recorded by the optical detection device 4 are processed or analyzed by a processor device 2, which is located outside the mobile end-user device. Herein, the processor device may be a server device that receives the data via an internet connection. The processor device configured as a server device preferably sends the processed or modified or analyzed data or data based thereon via an internet connection to the end-user device.

[0099] 2. Providing the recorded (captured) data to the processor device or to a further processor device for the determination of the movement pattern as well as preferably the determination of the movement pattern using the processor device or using the further processor device. Herein, it is conceivable the further reference system is defined e.g. using a processor device of a mobile or stationary end-user device. Data recorded by the optical detection device 4 with respect to the reference system 10 moving with the head 8 of the person and with the respect to the reference system 16 moving with the hand 5 of the person is preferably analyzed. Particular preferably the relative movements of the reference systems 10, 16 are determined with respect to each other.

[0100] Furthermore, the orientation and/or position of the dental treatment means 14, such as of the bristle part of the toothbrush, is determined with respect to the hand 5 guiding the dental treatment means 14 preferably at least temporarily, such as before and/or during tooth brushing. The determination of the position and/or orientation of the dental treatment means 14, such as of the bristle part of the toothbrush, preferably takes place by analyzing the data determined by the optical detection device 4.

[0101] FIG. 2A shows the back of the hand 5, wherein reference numbers 48, 49, 50 and 51 denote purely exemplary characteristic points on the surface of the hand. Thus, reference number 48 denotes the transition between two fingers. Reference numbers 49 and 50 denote the knuckles of the hand and reference number 51 denotes a knuckle of a finger. It has been recognized that these body surface points or—parts and similar body surface points or—parts are always very characteristic and are therefore very suitable for an optical recording (detection), whereby the present teachings facilitate a very simple and functionally very reliable method for a user.

[0102] In FIG. 2B the hand 5 is shown in a purely exemplary manner together with a dental treatment means 14. This illustration shows individual characteristic body points or—sections, as they are preferably recorded (detected) by the optical detection device 4.