A CLINICAL-EVALUATION OF CONICAL CROWN RETAINED DENTURES

In an uncontrolled retrospective recall study of 57 patients treated w ith conical crown retained dentures, 60 restorations (37 in the maxill ae and 23 in the mandible jaw) with a mean wearing time of 30.1 months (range 4 to 76) were evaluated. Of the 248 abutments, eight (3.2%) ha d been lost. Clinically healthy mucosa was seen in 35 jaws. The margin al fit of the copings was judged to be good. No caries or new restorat ions were observed in 44 patients. Thirteen patients had 19 surfaces w ith new restorations and 20 surfaces with caries lesions. Of these 39 surfaces, 38 were located subgingivally.