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  • Title: Evaluation of four cementation strategies on the push-out bond strength between fiber post and root dentin.
    Author: Bergoli CD, Amaral M, Druck CC, Valandro LF.
    Journal: Gen Dent; 2011; 59(6):498-502. PubMed ID: 22313922.
    Abstract:
    This trial used push-out testing to evaluate four different fiber post cementation strategies. Specimens of bovine mandibular teeth were randomly allocated into four groups according to cementation strategies (n = 10): ScotchBond MultiPurpose and RelyX ARC (Group 1); AdheSE and Multilink Automix (Group 2); phosphoric acid and RelyX U100 (Group 3); and RelyX U100 (Group 4). Four slices from each specimen (2.0 mm thick) were obtained for the push-out test. All slices were analyzed for failure mode after testing. A one-way ANOVA showed differences between the groups (P = 0.002). A Tukey test indicated that Group 1 had the highest bond strength values (13.96 ± 6.41 MPa). Groups 2 (6.58 ± 2.14 MPa), 3 (5.85 ± 2.57 MPa), and 4 (8.19 ± 2.28 MPa) had similar bond strengths, but all of them were lower than Group 1. A three-step total etching adhesive system, associated with a conventional resin cement, might be a good alternative for fiber post cementation.
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