This paper presents a novel, real-time posture correction system uniquely designed for dental practitioners. Unlike existing ergonomic solutions focused on patient comfort or general posture, this system directly addresses dentists’ specific ergonomic needs by integrating non-intrusive ultrasonic sensors and immediate visual feedback in dental practice settings. This research addresses design and development of a posture-correction system meant to assist dentists in sitting in an ideal posture through sensor technology. This paper presents a novel, real-time posture correction system uniquely designed for dental practitioners. Unlike existing ergonomic solutions focused on patient comfort or general posture, this system directly addresses dentists’ specific ergonomic needs by integrating non-intrusive ultrasonic sensors and immediate visual feedback in dental practice settings. One of the concerns specifically dealt with is dentists leaning too far forward during treatment, which causes discomfort for both the dentist and patient and contributes to long-term back problems. The system identifies such deviations and gives instant feedback through an Arduino Mega microcontroller, which interprets sensor data and presents posture warnings on an LCD display. Comprehensive experiments were conducted with dental practitioners of various statures to validate the system’s accuracy and usability. The system developed has been tested with the dentist at Sibar Institute of Dental Sciences, Guntur.