This device comprises a measuring clamp (1) for teeth (20) and dental spaces (21), comprising a set of mobile arms (2) ending in some exploration extremities (3), which exploring displacement along the teeth (20) and dental spaces (21) determines the joint displacement of the mobile arms (2). A transducer (11) turns the relative displacement movement between mobile arms (2), into signals (25) expressing the positional parameters (23) determined by that movement, and, upon being connected to a computerized system (30), it transmits the signals (25) for their processing as measurement parameters (23). The transducer system (10), that may be analogue and/or digital, may have a manual driving means (12) in the measuring clamp (1). The invention is also related to a measuring method through which steps the exploration extremities (3) are arranged in the teeth (20) or dental spaces (21), the measurement is performed and the sequence is repeated, as many times as needed until completing the measurement. The measuring method comprises a series of steps through which the measuring clamp (1) is applied to the teeth (20) or dental spaces (21), the measurement is performed, it is confirmed that the measurement data (25) has entered the computerized system (30), and the form fields which sequentially appear available, repeating the corresponding steps, as many times as needed until completing the measurement.
