[Preprosthetic periodontal examination. Clinical observations].

A detailed and comprehensive clinical examination is an important and fundamental basis for establishing a proper diagnosis for prosthetic treatment. It is important to make an accurate diagnosis, a rational treatment plan and establishing a prognosis. A careful examination of teeth and periodontium must be done and the prosthetic plan must consider the periodontal status of the teeth. The prosthetic treatment plan must take into consideration problems of appliance retention, iatrogenic tooth injuries and other factors. A classification based on 6 different clinical situations suggested and their therapeutic solution proposed.