A personal care implement comprises a head and a handle, the head being repeatedly attachable to and detachable from the handle. The personal care implement exhibits a sound when the head gets attached to or detached from the handle, thereby providing a signal of secure attachment or detachment. The sound is characterized by a tonal component of about 4000 Hz to about 6000 Hz, preferably over a time length of about 0.1 s to about 0.3 s, on a tonality frequency vs. time analysis.

An oral care implement including a handle and an oral care refill head. The handle has a gripping portion, an engagement component coupled to a distal end of the gripping portion, and a stem. The engagement component includes a plate portion and a first engagement feature. The stem extends through an opening in the engagement component and protrudes from the plate portion. The oral care refill head includes an oral care treatment portion and a sleeve portion. The sleeve portion has an inner surface that defines a sleeve cavity having a cavity axis and a second engagement feature. When the oral care refill head is detachably coupled to the handle, the first and second engagement features mate with one another to at least one of: (1) position the oral care refill head and the handle in an operational alignment; and (2) lock the oral care refill head to the handle.

An oral care implement including a handle and an oral care refill head. The handle has a gripping portion, an engagement component coupled to a distal end of the gripping portion, and a stem. The engagement component includes a plate portion and a first engagement feature. The stem extends through an opening in the engagement component and protrudes from the plate portion. The oral care refill head includes an oral care treatment portion and a sleeve portion. The sleeve portion has an inner surface that defines a sleeve cavity having a cavity axis and a second engagement feature. When the oral care refill head is detachably coupled to the handle, the first and second engagement features mate with one another to at least one of: (1) position the oral care refill head and the handle in an operational alignment; and (2) lock the oral care refill head to the handle.

An oral care implement including a handle and an oral care refill head. The handle has a gripping portion, an engagement component coupled to a distal end of the gripping portion, and a stem. The engagement component includes a plate portion and a first engagement feature. The stem extends through an opening in the engagement component and protrudes from the plate portion. The oral care refill head includes an oral care treatment portion and a sleeve portion. The sleeve portion has an inner surface that defines a sleeve cavity having a cavity axis and a second engagement feature. When the oral care refill head is detachably coupled to the handle, the first and second engagement features mate with one another to at least one of: (1) position the oral care refill head and the handle in an operational alignment; and (2) lock the oral care refill head to the handle.

An oral care implement including a handle and an oral care refill head. The handle has a gripping portion, an engagement component coupled to a distal end of the gripping portion, and a stem. The engagement component includes a plate portion and a first engagement feature. The stem extends through an opening in the engagement component and protrudes from the plate portion. The oral care refill head includes an oral care treatment portion and a sleeve portion. The sleeve portion has an inner surface that defines a sleeve cavity having a cavity axis and a second engagement feature. When the oral care refill head is detachably coupled to the handle, the first and second engagement features mate with one another to at least one of: (1) position the oral care refill head and the handle in an operational alignment; and (2) lock the oral care refill head to the handle.

A smart toothbrush control circuit, a smart toothbrush, and a smart tooth-brushing behavior monitoring method are provided. The smart toothbrush control circuit includes: a main control module, a brush head module, a position detection module, and a pressure detection module. The main control module is connected to a cloud server by a smart terminal. The main control module uploads oral data to the cloud server so as to implement deep-level data analysis and processing on the oral data. The main control module generates a control signal according to the oral data, and the brush head module, the position detection module and the pressure detection module send a variety of behavior guidance and prompts to a user on the basis of the control signal. The smart terminal synchronously display a tooth-brushing behavior of the user on the basis of the control signal.

A toothbrush (10) includes a brushhead (18), a first force sensor (30A) for measuring a first force exerted by the brushhead at a first angle relative to a tooth and a second force sensor (30B) for measuring a second force exerted by the brushhead at a second angle relative to the tooth, the second angle being different than the first angle, and a processing unit (26). The processing unit is structured to: (i) receive first information indicative of the first force as measured by the first force sensor, (ii) receive second information indicative of the second force as measured by the second force sensor, and (iii) determine information regarding a current brushing angle of the brushhead based on the first information and the second information.

Systems and methods for enhancing a user's efficiency while operating an oral hygiene device (10) is provided. In an exemplary embodiment, motion information of an oral hygiene device is received from one or more accelerometers (32) located within the oral hygiene device. The received motion information is compared to a targeted motion of the oral hygiene device. The user operating the oral hygiene device is then provided with feedback in response to determining that the received motion information is within a predefined range of the targeted motion information.

A toothbrush apparatus and system designed to simplify the cleaning of all surfaces of the teeth, by simplifying the brushing process to a single motion performed on the top and bottom rows of teeth, and thereby by reducing the cognitive difficulty of learning the brushing task. Simplification is accomplished by using a unique brush head that wraps around the teeth to cover the inside, top, and outer surface of the teeth at once, while a pivot mechanism with a restorative force component attaches the brush head to the brush stem, and allows the brush head to rotate about itself. These two elements combine to allow the brush head to glide around the teeth like a train on a track as the brush is moved around the mouth.

Cleaning devices are provided that have a surface with areas that provide different cleaning states. The areas of different cleaning states are connected to one another by a deflection member that provides tactile and/or audible feedback to the user when transitioning between the different cleaning states.