A RETROSPECTIVE EVALUATION OF A SERIES OF DENTIN-BONDED CERAMIC CROWNS

Objective: This study assessed the clinical performance of dentin-bond ed crowns, in which ceramic crowns are bonded to underlying dentin wit h a resin composite-based luting material and a dentin bonding agent. Method and materials: Twenty-five patients who had received such resto rations more than 1 year previously were recalled for evaluation of th eir crowns. Results: Sixty dentin-bonded complete-coverage restoration s were assessed. Forty-one of the crowns had been placed on incisor te eth. The mean time since placement of the restorations was 2.43 years. Fifty-seven of the 60 restorations were intact. The three failures ha d resulted from cracks in the restorations, which had not clinically d ebonded. No secondary caries was detected at the crown margins, and an atomic form was assessed as excellent for 56 crowns. Root canal treatm ent had been required in one case. Color match was rated very good Sor 47 crowns. Ali 25 patients were satisfied with their restorations. Co nclusion: Dentin-bonded crowns may be found to have a low rate of fail ure and to provide a high level of patient satisfaction.