Abstract: A dental unit (1) comprises: a chair (2); a base (3) positioned next to the chair (2) and mounting main or auxiliary equipment; at least one handpiece tray (4) holding a plurality of operating or auxiliary handpieces (5) for dental operations of traditional conservative type, for implants and/or for endodontic surgery; a microprocessor unit (6) for controlling the main and auxiliary functions of the dental unit (1) and of the handpieces (5); a data display screen (7) associated with the dental unit (1); an interface unit (8) connected, on one side, to the microprocessor (6) and, on the other, to the screen (7) and designed to receive from the microprocessor (6) at least one signal (S) corresponding to a data item (D) that is a function of the torque value (V5) of the active handpieces (5) and to convert it into at least one graphic viewing field (CV) on the screen (7) in real time so as display the graph (TR) of torque over time (t) corresponding to the use of the selected handpiece (5).