EFFECTS OF EUGENOL AND NONEUGENOL ENDODONTIC SEALER CEMENTS ON POST RETENTION

Resin cements are sometimes recommended to enhance the retention of po sts in endodontically treated teeth. Many sealer cements used in endod ontics contain eugenol, however, which has been shown to inhibit the p olymerization of resins. The purpose of this study was to evaluate the effects of a eugenol and a noneugenol sealer cement on the retention of posts. Sixty extracted canines were divided equally into four group s, Each tooth received conventional endodontic therapy and was prepare d to receive a post. Two sealer cements were used in obturation: one c ontained eugenol and one was eugenol-free, The posts were cemented wit h either zinc phosphate cement or resin cement, Each combination of se aler and post cement was tested for retention on an Instron testing ma chine. The type of sealer used had no effect on post retention with ei ther cement. Post retention was significantly greater with the zinc ph osphate cement than the resin cement.