Abstract: A power toothbrush (10) is disclosed comprising a motor (12) for driving a brush head (15) of the power toothbrush and a controller (20) responsive to an operating mode selection signal and arranged to control said motor. The controller comprises a timer (22) for timing a total duration of a tooth brushing session with said power toothbrush and is adapted to, in a feedback mode of operation, calculate an average total duration of a tooth brushing session based on stored prior tooth brushing session times; define a target value based on the calculated average total duration and cause the generation of a sensory output during a tooth brushing session upon its duration reaching the target value to encourage the user to carry on brushing. Also disclosed is a method of evaluating tooth brushing session data generated by such a power toothbrush, a computer program product for implementing such a method, an electronic device adapted to implement such a method and an oral hygiene kit.

Abstract: The invention provides a method for providing a user with feedback on their technique when using an oral care device. The method includes recording one or more previous oral care sessions and identifying one or more oral care habits based on the recorded one or more previous oral care sessions. Feedback is generated for encouraging the user to adjust an oral care habit of the one or more oral care habits and the user is provided with the feedback during a subsequent oral care session.

Abstract: The invention provides a method for controlling an operation of an electrical toothbrush with an interchangeable brush head. The method includes obtaining an existing operation mode of the electrical toothbrush and identifying a new interchangeable brush head when the new interchangeable brush head is provided to the electrical toothbrush. A new operation mode associated with the new interchangeable brush head is identified, the new operation mode being different from the existing operation mode. An input is requested from a user to confirm that the operation of the electrical toothbrush should change to the new operation mode. The operation mode of the electrical toothbrush is then changed to the new operation mode or maintained in the existing operation mode based on the user input.