Clinical Performance of Rebilda DC Versus Cast Post and Cores

Methods: 26 patients received a resin based core build up (Rebilda DC) and 32 patients cast post and cores (high precious alloy). Solobond Plus (VOCO) was used as bonding agent. At baseline and 12 months, dental hygiene and a detailed periodontal- and prosthetic status were recorded. Finally, single tooth radiographs were taken. Data were subjected to a Kaplan-Meier-analysis.

Results: After 12 months, 32 patients were reinvestigated in a follow up. One patient with a cast restoration showed a root fracture. A further restoration failed due to root canal perforation. Two core build ups with Rebilda DC failed due to debonding. At 12 months, there was no significant difference in longevity between core build up materials and cast restorations (Log-Rang-Test, p>0.05).

Conclusion: Within the limitations of the study it can be concluded that the longevity of the resin based core build up material used and cast post and cores seems to be comparable after 12 months in service. As adhesive treatment procedures exhibit a lower risk for root canal perforation, this technique should be used more often in daily clinical practice. However, meticulous attention has to be paid to the bonding procedures.