Abstract
It treated to the patient who lost teeth by a severe periodontitis, and occlusal reconstruction. The treatment was phase I. periodontal therapy and periodontal surgery as the plaque control. In addition, occlusal function was recovered by provisional restoration. The final prosthesis was made konus teleskop denture expecting a sprinting effect of remaining teeth furthermore the plaque control and esthetic. It shifted to the maintenance every six months after it had finally prosthesis it, and passage was excellent. However, the vertical bone defects that a cause it in the occlusal trauma was admitted in mesial of the mandibuler right second incisor four years later the final prosthesis. Then, after the occlusal adjustment had been done, the flap surgery. Excellent passage is obtained through 12 years have passed since it finally prosthesis it now. It was recognized again that konus teleskop denture was effective as the final prosthesis of severe periodontal patient with losses of teeth through this case. Moreover, the importance of maintenance was recognized again.