[Difficulties in the prosthetic treatment of the transition stage from partial edentulousness to total edentulousness].

The transition from the partial to the total loss of teeth is characterized by the presence of a reduced number of remaining teeth, on a single maxilla or on both of them, which don't provide optimum conditions for the conjunct or composite prosthetics. Its extraction contravene to the biological principle. Its preservation and utilisation involves a series of difficulties, which the dental surgeon must known and surpass within the frame of the prosthetic therapy. The secondary dental malposition, the absence or the reduction of the intercadic dental contacts, accompanying the mandibular cranial malrelations, all with implications in the oro-facial esthetic modification, require specific, complex interventions, before the definitive prosthetics. Upon the basis of a 15 years practical experience, the work presents a series of such clinical cases, the applied therapy and the outcomes also.