The restoration of residual crown with complete root canal obturation

Objective: To explore the prosthetic design and procedure of resid ual crown with complete root canal imperforation so as to solve the clinical pro blem of such cases. Methods: 18 cases with 20 residual crown were selected from dental outpatients of our hospital during 2001-2003. All residual crown were pro ved with completely atresic root canal clinically and with periapical X ray film . All cases were restored with casting post and core. The entrances of root cana ls were searched by the method of iodine stain. The astresic root canals of resi dual crowns were prepared directly and the casting post and core were made with indirect method. Then, the patients were restored with the porcelain fused to me tal crowns. Results: The findings showed that successive rate accounted for 94.8 % during a three-year follow up study. Conclusion: The residual crown with compl ete imperforation root canal can be restored with post and core crown pretending no periapical infection observed and the result is satisfying.