The invention relates to a measuring device for dentistry and method for the use thereof, of the type comprising a slide which moves along a bar, which has a graduated scale, comprising: first means for blocking the slide when desired a first plate coupled via first hinged joining means to the end of the bar closest to the zero of the graduated scale a second plate, disposed in the opposite direction to the first plate, and coupled via second hinged joining means to the end of the slide closest to the zero of the graduated scale, with the first and second hinged joining means being provided with means for blocking when desired. The use methods according to the invention permit the measuring of the dimensions of rest, occlusion, maximum opening, tone, interocclusal freeway space, overbite, bone classification of the patient and inclination of the upper lip.
