Oral care apparatus

An oral care apparatus comprising:

• an oral care implement comprising a body having an internal cavity;
• a tracking module extending along a longitudinal axis, the tracking module comprising:
• a coupling portion configured to couple the tracking module to the body of the oral care implement;
• and
• an electronics portion comprising at least one sensor configured to measure at least one of a position, an orientation, and a movement of the oral care implement
• when the tracking module is coupled to the oral care implement;
• wherein at least a portion of the tracking module is positioned within the internal cavity of the body of the oral care implement so that the electronics portion of the tracking module is non-rotatable relative to the body of the oral care implement while the coupling portion of the tracking module is rotatable relative to the body of the oral care implement to couple the tracking module to the body of the oral care implement.

A method of assembling an oral care apparatus that includes an oral care implement and a tracking module that monitors a user's oral care hygiene behavior, the method comprising:

• providing an oral care implement comprising an internal cavity;
• providing a tracking module comprising a coupling portion and an electronics portion, the electronics portion comprising at least one sensor configured to measure at least one of a position an orientation, and a movement of the oral care implement when the tracking module is coupled to the oral care implement;
• inserting at least a portion of the electronics portion of the tracking module into the internal cavity of the body of the oral care implement thereby preventing relative rotational movement between the electronics portion of the tracking module and the body of the oral care implement;
• and
• rotating the coupling portion of the tracking module relative to the electronics portion of the tracking module and relative to the body of the oral care implement to couple the tracking module to the oral care implement.