Indicating teeth cleaning time

A method of operating a toothbrush to specify a target length of time for cleaning teeth the method comprising:

• measuring an actual cleaning time during a first cleaning process using a time determination device of the toothbrush, a duration of the first cleaning process including a duration of a temporary interruption of the cleaning process that is less than a predetermined maximum interruption time limit;
• determining a deviation of the actual cleaning time from a standard cleaning time using an evaluation device of the toothbrush;
• and
• determining a target cleaning time for a subsequent cleaning process as a function of the determined deviation and the standard cleaning time using a control device of the toothbrush,
• wherein the deviation between the actual cleaning time and the standard cleaning time is only determined when the actual cleaning time of a tooth cleaning lies above a predetermined minimum cleaning time.

A method of operating a toothbrush to specify a target length of time for cleaning teeth, the method comprising:

• measuring an actual cleaning time during a first cleaning process using a time determination device of the toothbrush, a duration of the first cleaning process including a duration of a temporary interruption of the cleaning process that is less than a predetermined maximum interruption time limit;
• determining a deviation of the actual cleaning time from a standard cleaning time using an evaluation device of the toothbrush;
• determining a target cleaning time for a subsequent cleaning process as a function of the determined deviation and the standard cleaning time using a control device of the toothbrush;
• and
• storing multiple deviations corresponding to multiple tooth cleanings and determining the target cleaning time of a subsequent tooth cleaning as a function of a sum of the multiple deviations.

An electric tooth cleaning device, comprising:

• a tooth cleaning element;
• a motor;
• a motor controller that controls the motor and is configured to
• measure an actual cleaning time during a first cleaning process, where a duration of the first cleaning process includes a duration of a temporary interruption of the cleaning process that is less than a predetermined maximum interruption time limit;
• determine a deviation of the actual cleaning time from a standard cleaning time;
• and
• determine a target cleaning time for a subsequent cleaning process as a function of the determined deviation and the standard cleaning time, wherein the target cleaning time is a summation of the standard cleaning time and the deviation.

An electric tooth cleaning device, comprising:

• a tooth cleaning element;
• a motor;
• a motor controller that controls the motor and is configured to
• measure an actual cleaning time during a first cleaning process, where a duration of the first cleaning process includes a duration of a temporary interruption of the cleaning process that is less than a predetermined maximum interruption time limit;
• determine a deviation of the actual cleaning time from a standard cleaning time;
• and
• determine a target cleaning time for a subsequent cleaning process as a function of the determined deviation and the standard cleaning time,
• wherein the controller determines a deviation only when the actual cleaning time is above a predetermined minimum cleaning time limit.

An electric tooth cleaning device, comprising:

• a tooth cleaning element;
• a motor;
• a motor controller that controls the motor and is configured to
• measure an actual cleaning time during a first cleaning process, where a duration of the first cleaning process includes a duration of a temporary interruption of the cleaning process that is less than a predetermined maximum interruption time limit;
• determine a deviation of the actual cleaning time from a standard cleaning time;
• and
• determine a target cleaning time for a subsequent cleaning process as a function of the determined deviation and the standard cleaning time,
• wherein the controller is configured to store multiple deviations corresponding to multiple tooth cleanings, and to determine the target cleaning time as a function of a sum of the deviations.