Effect of Two Self-Adhesive Resin Cements (Biscem, Maxcem Elite) On Shear Bond Strength of Fiber Post to Dentin (In Vitro)astract:

  Background and Aim: Inadequate bond strength of resin cements to dentin appears to be a typical cause of failure in retention of fiber posts. The aim of this study was to compare the effect of two self-adhesive resin cements on shear bond strength of fiber post to dentin.

  Materials and Methods : This in vitro experimental study included 20 mandibular premolars with a single canal. All samples received standardized endodontic treatment after meeting the inclusion criteria. They were randomly divided into two groups and a post space was prepared in each sample. A size two match post RTD fiber post was cemented into each sample using Biscem (Bisco) in group 1 and Maxcem Elite (Kerr) in group 2 as cementing agents. All samples were then cut into two pieces. Each specimen was loaded with equal force using a Universal Testing Machine. The load was applied from the apical to the coronal portion of each sample until fracture occurred. The mean shear bond strength for two each group was recorded and analyzed using statistical T-test method.

  Results : The mean shear bond strength was found to be 7.3 ± 2.5 for the Biscem (Bisco) group and 6.6±3.2 for the Maxcem Elite (Kerr) Group. There was no significant difference between the two groups.

  Conclusion: the use of either resin cement has no significant effect on the shear bond strength of the fiber post to dentin.

  Key words : Bond Strength, Biscem Bisco cement, Maxcem Elite Kerr cement,Fiber post