• M K AlMadi, A Khabeer, S AlHilal, A S AlShahrani, and S Ali.
• Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.
• Niger J Clin Pract. 2021 Dec 1; 24 (12): 1841-1845.

AimsThe aim of this study was to evaluate the pull-out bond strength of fiber post when cemented with a self-adhesive dual-cured resin luting cement and a conventional light-cured resin luting cement. In addition, the influence of a light-emitting diode (LED) and halogen (QTH) curing lights on the pull-out bond strength was assessed.Materials And MethodsA total of 40 extracted human teeth were selected. Post-space preparation of 10 mm was done and two types of resin cement i.e. RelyX Unicem (RXU) and variolink esthetic LC (VLE) were used for cementation of a translucent RelyX fiber post. Light activation for 60 s was done with LED and QTH curing units. The pull-out test was performed parallel to the long axis of the tooth and the post at a crosshead speed of 1 mm/min using a universal testing machine. The load required to dislodge each post was recorded in Newton (N). Statistical analysis was done and a value of P < 0.05 was considered statistically significant.ResultsThe RXU showed a mean (SD) pull-out bond strength of 203.5N (47.1) and 207.3N (31.3) when light activated with LED and QTH curing lights, respectively. For VLE, the mean pull-out bond strength was 78.9N (21.5) and 87.7N (30.7), when light activated with LED and QTH curing lights, respectively. Moreover, LED and QTH curing lights did not influence the pull-out bond strength for both the test materials.ConclusionIt is concluded that a dual-cured resin luting cement should be used for the cementation of fiber post. Further research is required to understand the light transmission of translucent fiber posts.

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