Method for controlling overpressure in oral-care implement

A method for controlling overpressure in an electric oral-care implement having a treatment head with at least one functional element driven by a motor, the method comprising the steps:

• detecting a stimulus to energize the motor;
• setting a baseline current;
• and
• repeatedly execute an overpressure-detection control loop comprising the steps:
• measuring an instantaneous current draw of the motor;
• adding an increment value to the baseline current or subtracting a decrement value from the baseline current, thereby generating a dynamically adjusted baseline current;
• determining whether a difference between the instantaneous current draw and the dynamically adjusted baseline current exceeds a threshold by adding the threshold to the dynamically adjusted baseline current, thereby detecting an occurrence of overpressure;
• and
• performing a corrective action in response to the detected occurrence of overpressure.